Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 1 | /* |
| 2 | * HTTP/2 mux-demux for connections |
| 3 | * |
| 4 | * Copyright 2017 Willy Tarreau <w@1wt.eu> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | */ |
| 12 | |
Willy Tarreau | dfd3de8 | 2020-06-04 23:46:14 +0200 | [diff] [blame] | 13 | #include <import/eb32tree.h> |
Willy Tarreau | 63617db | 2021-10-06 18:23:40 +0200 | [diff] [blame] | 14 | #include <import/ebmbtree.h> |
Willy Tarreau | 4c7e4b7 | 2020-05-27 12:58:42 +0200 | [diff] [blame] | 15 | #include <haproxy/api.h> |
Willy Tarreau | 6be7849 | 2020-06-05 00:00:29 +0200 | [diff] [blame] | 16 | #include <haproxy/cfgparse.h> |
Willy Tarreau | 7ea393d | 2020-06-04 18:02:10 +0200 | [diff] [blame] | 17 | #include <haproxy/connection.h> |
Christopher Faulet | 1329f2a | 2021-12-16 17:32:56 +0100 | [diff] [blame] | 18 | #include <haproxy/conn_stream.h> |
Christopher Faulet | 6b0a0fb | 2022-04-04 11:29:28 +0200 | [diff] [blame] | 19 | #include <haproxy/dynbuf.h> |
Willy Tarreau | bf07314 | 2020-06-03 12:04:01 +0200 | [diff] [blame] | 20 | #include <haproxy/h2.h> |
Willy Tarreau | be327fa | 2020-06-03 09:09:57 +0200 | [diff] [blame] | 21 | #include <haproxy/hpack-dec.h> |
| 22 | #include <haproxy/hpack-enc.h> |
| 23 | #include <haproxy/hpack-tbl.h> |
Willy Tarreau | 8773533 | 2020-06-04 09:08:41 +0200 | [diff] [blame] | 24 | #include <haproxy/http_htx.h> |
Willy Tarreau | 16f958c | 2020-06-03 08:44:35 +0200 | [diff] [blame] | 25 | #include <haproxy/htx.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 26 | #include <haproxy/istbuf.h> |
Willy Tarreau | 36979d9 | 2020-06-05 17:27:29 +0200 | [diff] [blame] | 27 | #include <haproxy/log.h> |
Willy Tarreau | 6131d6a | 2020-06-02 16:48:09 +0200 | [diff] [blame] | 28 | #include <haproxy/net_helper.h> |
Willy Tarreau | 48d25b3 | 2020-06-04 18:58:52 +0200 | [diff] [blame] | 29 | #include <haproxy/session-t.h> |
Amaury Denoyelle | 3238b3f | 2020-10-27 17:16:00 +0100 | [diff] [blame] | 30 | #include <haproxy/stats.h> |
Willy Tarreau | dfd3de8 | 2020-06-04 23:46:14 +0200 | [diff] [blame] | 31 | #include <haproxy/stream.h> |
Willy Tarreau | c6d61d7 | 2020-06-04 19:02:42 +0200 | [diff] [blame] | 32 | #include <haproxy/trace.h> |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 33 | |
| 34 | |
Willy Tarreau | ecb9dcd | 2019-01-03 12:00:17 +0100 | [diff] [blame] | 35 | /* dummy streams returned for closed, error, refused, idle and states */ |
Willy Tarreau | 2a85618 | 2017-05-16 15:20:39 +0200 | [diff] [blame] | 36 | static const struct h2s *h2_closed_stream; |
Willy Tarreau | ecb9dcd | 2019-01-03 12:00:17 +0100 | [diff] [blame] | 37 | static const struct h2s *h2_error_stream; |
Willy Tarreau | 8d0d58b | 2018-12-23 18:29:12 +0100 | [diff] [blame] | 38 | static const struct h2s *h2_refused_stream; |
Willy Tarreau | 2a85618 | 2017-05-16 15:20:39 +0200 | [diff] [blame] | 39 | static const struct h2s *h2_idle_stream; |
| 40 | |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 41 | /* Connection flags (32 bit), in h2c->flags */ |
| 42 | #define H2_CF_NONE 0x00000000 |
| 43 | |
Willy Tarreau | 2e5b60e | 2017-09-25 11:49:03 +0200 | [diff] [blame] | 44 | /* Flags indicating why writing to the mux is blocked. */ |
| 45 | #define H2_CF_MUX_MALLOC 0x00000001 // mux blocked on lack of connection's mux buffer |
| 46 | #define H2_CF_MUX_MFULL 0x00000002 // mux blocked on connection's mux buffer full |
| 47 | #define H2_CF_MUX_BLOCK_ANY 0x00000003 // aggregate of the mux flags above |
| 48 | |
Willy Tarreau | 315d807 | 2017-12-10 22:17:57 +0100 | [diff] [blame] | 49 | /* Flags indicating why writing to the demux is blocked. |
| 50 | * The first two ones directly affect the ability for the mux to receive data |
| 51 | * from the connection. The other ones affect the mux's ability to demux |
| 52 | * received data. |
| 53 | */ |
Willy Tarreau | 2e5b60e | 2017-09-25 11:49:03 +0200 | [diff] [blame] | 54 | #define H2_CF_DEM_DALLOC 0x00000004 // demux blocked on lack of connection's demux buffer |
| 55 | #define H2_CF_DEM_DFULL 0x00000008 // demux blocked on connection's demux buffer full |
Willy Tarreau | 315d807 | 2017-12-10 22:17:57 +0100 | [diff] [blame] | 56 | |
Willy Tarreau | 2e5b60e | 2017-09-25 11:49:03 +0200 | [diff] [blame] | 57 | #define H2_CF_DEM_MBUSY 0x00000010 // demux blocked on connection's mux side busy |
| 58 | #define H2_CF_DEM_MROOM 0x00000020 // demux blocked on lack of room in mux buffer |
| 59 | #define H2_CF_DEM_SALLOC 0x00000040 // demux blocked on lack of stream's request buffer |
| 60 | #define H2_CF_DEM_SFULL 0x00000080 // demux blocked on stream request buffer full |
Willy Tarreau | f210191 | 2018-07-19 10:11:38 +0200 | [diff] [blame] | 61 | #define H2_CF_DEM_TOOMANY 0x00000100 // demux blocked waiting for some conn_streams to leave |
| 62 | #define H2_CF_DEM_BLOCK_ANY 0x000001F0 // aggregate of the demux flags above except DALLOC/DFULL |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 63 | // (SHORT_READ is also excluded) |
| 64 | |
Christopher Faulet | 47940c3 | 2021-11-10 17:50:10 +0100 | [diff] [blame] | 65 | #define H2_CF_DEM_SHORT_READ 0x00000200 // demux blocked on incomplete frame |
Willy Tarreau | 2e5b60e | 2017-09-25 11:49:03 +0200 | [diff] [blame] | 66 | |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 67 | /* other flags */ |
Willy Tarreau | f210191 | 2018-07-19 10:11:38 +0200 | [diff] [blame] | 68 | #define H2_CF_GOAWAY_SENT 0x00001000 // a GOAWAY frame was successfully sent |
| 69 | #define H2_CF_GOAWAY_FAILED 0x00002000 // a GOAWAY frame failed to be sent |
| 70 | #define H2_CF_WAIT_FOR_HS 0x00004000 // We did check that at least a stream was waiting for handshake |
Willy Tarreau | b3fb56d | 2018-10-03 13:56:38 +0200 | [diff] [blame] | 71 | #define H2_CF_IS_BACK 0x00008000 // this is an outgoing connection |
Willy Tarreau | 3d4631f | 2021-01-20 10:53:13 +0100 | [diff] [blame] | 72 | #define H2_CF_WINDOW_OPENED 0x00010000 // demux increased window already advertised |
| 73 | #define H2_CF_RCVD_SHUT 0x00020000 // a recv() attempt already failed on a shutdown |
| 74 | #define H2_CF_END_REACHED 0x00040000 // pending data too short with RCVD_SHUT present |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 75 | |
Amaury Denoyelle | 0df0436 | 2021-10-18 09:43:29 +0200 | [diff] [blame] | 76 | #define H2_CF_RCVD_RFC8441 0x00100000 // settings from RFC8441 has been received indicating support for Extended CONNECT |
Willy Tarreau | 39a0a1e | 2022-01-13 16:00:12 +0100 | [diff] [blame] | 77 | #define H2_CF_SHTS_UPDATED 0x00200000 // SETTINGS_HEADER_TABLE_SIZE updated |
| 78 | #define H2_CF_DTSU_EMITTED 0x00400000 // HPACK Dynamic Table Size Update opcode emitted |
Amaury Denoyelle | 0df0436 | 2021-10-18 09:43:29 +0200 | [diff] [blame] | 79 | |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 80 | /* H2 connection state, in h2c->st0 */ |
| 81 | enum h2_cs { |
| 82 | H2_CS_PREFACE, // init done, waiting for connection preface |
| 83 | H2_CS_SETTINGS1, // preface OK, waiting for first settings frame |
| 84 | H2_CS_FRAME_H, // first settings frame ok, waiting for frame header |
| 85 | H2_CS_FRAME_P, // frame header OK, waiting for frame payload |
Willy Tarreau | a20a519 | 2017-12-27 11:02:06 +0100 | [diff] [blame] | 86 | H2_CS_FRAME_A, // frame payload OK, trying to send ACK frame |
| 87 | H2_CS_FRAME_E, // frame payload OK, trying to send RST frame |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 88 | H2_CS_ERROR, // send GOAWAY(errcode) and close the connection ASAP |
| 89 | H2_CS_ERROR2, // GOAWAY(errcode) sent, close the connection ASAP |
| 90 | H2_CS_ENTRIES // must be last |
| 91 | } __attribute__((packed)); |
| 92 | |
Willy Tarreau | 5133096 | 2019-05-26 09:38:07 +0200 | [diff] [blame] | 93 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 94 | /* 32 buffers: one for the ring's root, rest for the mbuf itself */ |
| 95 | #define H2C_MBUF_CNT 32 |
Willy Tarreau | 5133096 | 2019-05-26 09:38:07 +0200 | [diff] [blame] | 96 | |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 97 | /* H2 connection descriptor */ |
| 98 | struct h2c { |
| 99 | struct connection *conn; |
| 100 | |
| 101 | enum h2_cs st0; /* mux state */ |
| 102 | enum h2_err errcode; /* H2 err code (H2_ERR_*) */ |
| 103 | |
| 104 | /* 16 bit hole here */ |
| 105 | uint32_t flags; /* connection flags: H2_CF_* */ |
Willy Tarreau | 2e2083a | 2019-01-31 10:34:07 +0100 | [diff] [blame] | 106 | uint32_t streams_limit; /* maximum number of concurrent streams the peer supports */ |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 107 | int32_t max_id; /* highest ID known on this connection, <0 before preface */ |
| 108 | uint32_t rcvd_c; /* newly received data to ACK for the connection */ |
| 109 | uint32_t rcvd_s; /* newly received data to ACK for the current stream (dsi) */ |
| 110 | |
| 111 | /* states for the demux direction */ |
| 112 | struct hpack_dht *ddht; /* demux dynamic header table */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 113 | struct buffer dbuf; /* demux buffer */ |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 114 | |
| 115 | int32_t dsi; /* demux stream ID (<0 = idle) */ |
| 116 | int32_t dfl; /* demux frame length (if dsi >= 0) */ |
| 117 | int8_t dft; /* demux frame type (if dsi >= 0) */ |
| 118 | int8_t dff; /* demux frame flags (if dsi >= 0) */ |
Willy Tarreau | 05e5daf | 2017-12-11 15:17:36 +0100 | [diff] [blame] | 119 | uint8_t dpl; /* demux pad length (part of dfl), init to 0 */ |
| 120 | /* 8 bit hole here */ |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 121 | int32_t last_sid; /* last processed stream ID for GOAWAY, <0 before preface */ |
| 122 | |
| 123 | /* states for the mux direction */ |
Willy Tarreau | 5133096 | 2019-05-26 09:38:07 +0200 | [diff] [blame] | 124 | struct buffer mbuf[H2C_MBUF_CNT]; /* mux buffers (ring) */ |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 125 | int32_t msi; /* mux stream ID (<0 = idle) */ |
| 126 | int32_t mfl; /* mux frame length (if dsi >= 0) */ |
| 127 | int8_t mft; /* mux frame type (if dsi >= 0) */ |
| 128 | int8_t mff; /* mux frame flags (if dsi >= 0) */ |
| 129 | /* 16 bit hole here */ |
| 130 | int32_t miw; /* mux initial window size for all new streams */ |
| 131 | int32_t mws; /* mux window size. Can be negative. */ |
| 132 | int32_t mfs; /* mux's max frame size */ |
| 133 | |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 134 | int timeout; /* idle timeout duration in ticks */ |
Willy Tarreau | 599391a | 2017-11-24 10:16:00 +0100 | [diff] [blame] | 135 | int shut_timeout; /* idle timeout duration in ticks after GOAWAY was sent */ |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 136 | int idle_start; /* date of the last time the connection went idle */ |
| 137 | /* 32-bit hole here */ |
Willy Tarreau | 4974561 | 2017-12-03 18:56:02 +0100 | [diff] [blame] | 138 | unsigned int nb_streams; /* number of streams in the tree */ |
Willy Tarreau | 7ac60e8 | 2018-07-19 09:04:05 +0200 | [diff] [blame] | 139 | unsigned int nb_cs; /* number of attached conn_streams */ |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 140 | unsigned int nb_reserved; /* number of reserved streams */ |
Willy Tarreau | e9634bd | 2019-01-23 10:25:10 +0100 | [diff] [blame] | 141 | unsigned int stream_cnt; /* total number of streams seen */ |
Willy Tarreau | 0b37d65 | 2018-10-03 10:33:02 +0200 | [diff] [blame] | 142 | struct proxy *proxy; /* the proxy this connection was created for */ |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 143 | struct task *task; /* timeout management task */ |
Amaury Denoyelle | c92697d | 2020-10-27 17:16:01 +0100 | [diff] [blame] | 144 | struct h2_counters *px_counters; /* h2 counters attached to proxy */ |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 145 | struct eb_root streams_by_id; /* all active streams by their ID */ |
| 146 | struct list send_list; /* list of blocked streams requesting to send */ |
| 147 | struct list fctl_list; /* list of streams blocked by connection's fctl */ |
Willy Tarreau | 9edf6db | 2019-10-02 10:49:59 +0200 | [diff] [blame] | 148 | struct list blocked_list; /* list of streams blocked for other reasons (e.g. sfctl, dep) */ |
Willy Tarreau | 44e973f | 2018-03-01 17:49:30 +0100 | [diff] [blame] | 149 | struct buffer_wait buf_wait; /* wait list for buffer allocations */ |
Olivier Houchard | fa8aa86 | 2018-10-10 18:25:41 +0200 | [diff] [blame] | 150 | struct wait_event wait_event; /* To be used if we're waiting for I/Os */ |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 151 | }; |
| 152 | |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 153 | /* H2 stream state, in h2s->st */ |
| 154 | enum h2_ss { |
| 155 | H2_SS_IDLE = 0, // idle |
| 156 | H2_SS_RLOC, // reserved(local) |
| 157 | H2_SS_RREM, // reserved(remote) |
| 158 | H2_SS_OPEN, // open |
| 159 | H2_SS_HREM, // half-closed(remote) |
| 160 | H2_SS_HLOC, // half-closed(local) |
Willy Tarreau | 96060ba | 2017-10-16 18:34:34 +0200 | [diff] [blame] | 161 | H2_SS_ERROR, // an error needs to be sent using RST_STREAM |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 162 | H2_SS_CLOSED, // closed |
| 163 | H2_SS_ENTRIES // must be last |
| 164 | } __attribute__((packed)); |
| 165 | |
Willy Tarreau | 4c688eb | 2019-05-14 11:44:03 +0200 | [diff] [blame] | 166 | #define H2_SS_MASK(state) (1UL << (state)) |
| 167 | #define H2_SS_IDLE_BIT (1UL << H2_SS_IDLE) |
| 168 | #define H2_SS_RLOC_BIT (1UL << H2_SS_RLOC) |
| 169 | #define H2_SS_RREM_BIT (1UL << H2_SS_RREM) |
| 170 | #define H2_SS_OPEN_BIT (1UL << H2_SS_OPEN) |
| 171 | #define H2_SS_HREM_BIT (1UL << H2_SS_HREM) |
| 172 | #define H2_SS_HLOC_BIT (1UL << H2_SS_HLOC) |
| 173 | #define H2_SS_ERROR_BIT (1UL << H2_SS_ERROR) |
| 174 | #define H2_SS_CLOSED_BIT (1UL << H2_SS_CLOSED) |
Willy Tarreau | 4c688eb | 2019-05-14 11:44:03 +0200 | [diff] [blame] | 175 | |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 176 | /* HTTP/2 stream flags (32 bit), in h2s->flags */ |
| 177 | #define H2_SF_NONE 0x00000000 |
| 178 | #define H2_SF_ES_RCVD 0x00000001 |
| 179 | #define H2_SF_ES_SENT 0x00000002 |
| 180 | |
| 181 | #define H2_SF_RST_RCVD 0x00000004 // received RST_STREAM |
| 182 | #define H2_SF_RST_SENT 0x00000008 // sent RST_STREAM |
| 183 | |
Willy Tarreau | 2e5b60e | 2017-09-25 11:49:03 +0200 | [diff] [blame] | 184 | /* stream flags indicating the reason the stream is blocked */ |
| 185 | #define H2_SF_BLK_MBUSY 0x00000010 // blocked waiting for mux access (transient) |
Willy Tarreau | 9edf6db | 2019-10-02 10:49:59 +0200 | [diff] [blame] | 186 | #define H2_SF_BLK_MROOM 0x00000020 // blocked waiting for room in the mux (must be in send list) |
| 187 | #define H2_SF_BLK_MFCTL 0x00000040 // blocked due to mux fctl (must be in fctl list) |
| 188 | #define H2_SF_BLK_SFCTL 0x00000080 // blocked due to stream fctl (must be in blocked list) |
Willy Tarreau | 2e5b60e | 2017-09-25 11:49:03 +0200 | [diff] [blame] | 189 | #define H2_SF_BLK_ANY 0x000000F0 // any of the reasons above |
| 190 | |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 191 | /* stream flags indicating how data is supposed to be sent */ |
| 192 | #define H2_SF_DATA_CLEN 0x00000100 // data sent using content-length |
Christopher Faulet | 7d247f0 | 2020-12-02 14:26:36 +0100 | [diff] [blame] | 193 | #define H2_SF_BODYLESS_RESP 0x00000200 /* Bodyless response message */ |
Christopher Faulet | d0db423 | 2021-01-22 11:46:30 +0100 | [diff] [blame] | 194 | #define H2_SF_BODY_TUNNEL 0x00000400 // Attempt to establish a Tunnelled stream (the result depends on the status code) |
| 195 | |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 196 | |
Willy Tarreau | d946416 | 2020-01-10 18:25:07 +0100 | [diff] [blame] | 197 | #define H2_SF_NOTIFIED 0x00000800 // a paused stream was notified to try to send again |
Willy Tarreau | 6743420 | 2017-11-06 20:20:51 +0100 | [diff] [blame] | 198 | #define H2_SF_HEADERS_SENT 0x00001000 // a HEADERS frame was sent for this stream |
Willy Tarreau | c4312d3 | 2017-11-07 12:01:53 +0100 | [diff] [blame] | 199 | #define H2_SF_OUTGOING_DATA 0x00002000 // set whenever we've seen outgoing data |
Willy Tarreau | 6743420 | 2017-11-06 20:20:51 +0100 | [diff] [blame] | 200 | |
Willy Tarreau | 6cc85a5 | 2019-01-02 15:49:20 +0100 | [diff] [blame] | 201 | #define H2_SF_HEADERS_RCVD 0x00004000 // a HEADERS frame was received for this stream |
| 202 | |
Willy Tarreau | 2c249eb | 2019-05-13 18:06:17 +0200 | [diff] [blame] | 203 | #define H2_SF_WANT_SHUTR 0x00008000 // a stream couldn't shutr() (mux full/busy) |
| 204 | #define H2_SF_WANT_SHUTW 0x00010000 // a stream couldn't shutw() (mux full/busy) |
| 205 | |
Amaury Denoyelle | 5fb48ea | 2020-12-11 17:53:04 +0100 | [diff] [blame] | 206 | #define H2_SF_EXT_CONNECT_SENT 0x00040000 // rfc 8441 an Extended CONNECT has been sent |
Amaury Denoyelle | efe2276 | 2020-12-11 17:53:08 +0100 | [diff] [blame] | 207 | #define H2_SF_EXT_CONNECT_RCVD 0x00080000 // rfc 8441 an Extended CONNECT has been received and parsed |
Christopher Faulet | d0db423 | 2021-01-22 11:46:30 +0100 | [diff] [blame] | 208 | |
Amaury Denoyelle | 5fb48ea | 2020-12-11 17:53:04 +0100 | [diff] [blame] | 209 | #define H2_SF_TUNNEL_ABRT 0x00100000 // A tunnel attempt was aborted |
Willy Tarreau | 2c249eb | 2019-05-13 18:06:17 +0200 | [diff] [blame] | 210 | |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 211 | /* H2 stream descriptor, describing the stream as it appears in the H2C, and as |
Christopher Faulet | fafd1b0 | 2020-11-03 18:25:52 +0100 | [diff] [blame] | 212 | * it is being processed in the internal HTTP representation (HTX). |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 213 | */ |
| 214 | struct h2s { |
| 215 | struct conn_stream *cs; |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 216 | struct cs_endpoint *endp; |
Olivier Houchard | f502aca | 2018-12-14 19:42:40 +0100 | [diff] [blame] | 217 | struct session *sess; |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 218 | struct h2c *h2c; |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 219 | struct eb32_node by_id; /* place in h2c's streams_by_id */ |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 220 | int32_t id; /* stream ID */ |
| 221 | uint32_t flags; /* H2_SF_* */ |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 222 | int sws; /* stream window size, to be added to the mux's initial window size */ |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 223 | enum h2_err errcode; /* H2 err code (H2_ERR_*) */ |
| 224 | enum h2_ss st; |
Willy Tarreau | 9c5e22e | 2018-09-11 19:22:14 +0200 | [diff] [blame] | 225 | uint16_t status; /* HTTP response status */ |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 226 | unsigned long long body_len; /* remaining body length according to content-length if H2_SF_DATA_CLEN */ |
Olivier Houchard | 638b799 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 227 | struct buffer rxbuf; /* receive buffer, always valid (buf_empty or real buffer) */ |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 228 | struct wait_event *subs; /* recv wait_event the conn_stream associated is waiting on (via h2_subscribe) */ |
Olivier Houchard | fa8aa86 | 2018-10-10 18:25:41 +0200 | [diff] [blame] | 229 | struct list list; /* To be used when adding in h2c->send_list or h2c->fctl_lsit */ |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 230 | struct tasklet *shut_tl; /* deferred shutdown tasklet, to retry to send an RST after we failed to, |
| 231 | * in case there's no other subscription to do it */ |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 232 | |
| 233 | char upgrade_protocol[16]; /* rfc 8441: requested protocol on Extended CONNECT */ |
Willy Tarreau | 1831264 | 2017-10-11 07:57:07 +0200 | [diff] [blame] | 234 | }; |
Willy Tarreau | 5ab6b57 | 2017-09-22 08:05:00 +0200 | [diff] [blame] | 235 | |
Willy Tarreau | c640514 | 2017-09-21 20:23:50 +0200 | [diff] [blame] | 236 | /* descriptor for an h2 frame header */ |
| 237 | struct h2_fh { |
| 238 | uint32_t len; /* length, host order, 24 bits */ |
| 239 | uint32_t sid; /* stream id, host order, 31 bits */ |
| 240 | uint8_t ft; /* frame type */ |
| 241 | uint8_t ff; /* frame flags */ |
| 242 | }; |
| 243 | |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 244 | /* trace source and events */ |
Willy Tarreau | db3cfff | 2019-08-19 17:56:27 +0200 | [diff] [blame] | 245 | static void h2_trace(enum trace_level level, uint64_t mask, \ |
| 246 | const struct trace_source *src, |
| 247 | const struct ist where, const struct ist func, |
| 248 | const void *a1, const void *a2, const void *a3, const void *a4); |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 249 | |
| 250 | /* The event representation is split like this : |
| 251 | * strm - application layer |
| 252 | * h2s - internal H2 stream |
| 253 | * h2c - internal H2 connection |
| 254 | * conn - external connection |
| 255 | * |
| 256 | */ |
| 257 | static const struct trace_event h2_trace_events[] = { |
| 258 | #define H2_EV_H2C_NEW (1ULL << 0) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 259 | { .mask = H2_EV_H2C_NEW, .name = "h2c_new", .desc = "new H2 connection" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 260 | #define H2_EV_H2C_RECV (1ULL << 1) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 261 | { .mask = H2_EV_H2C_RECV, .name = "h2c_recv", .desc = "Rx on H2 connection" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 262 | #define H2_EV_H2C_SEND (1ULL << 2) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 263 | { .mask = H2_EV_H2C_SEND, .name = "h2c_send", .desc = "Tx on H2 connection" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 264 | #define H2_EV_H2C_FCTL (1ULL << 3) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 265 | { .mask = H2_EV_H2C_FCTL, .name = "h2c_fctl", .desc = "H2 connection flow-controlled" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 266 | #define H2_EV_H2C_BLK (1ULL << 4) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 267 | { .mask = H2_EV_H2C_BLK, .name = "h2c_blk", .desc = "H2 connection blocked" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 268 | #define H2_EV_H2C_WAKE (1ULL << 5) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 269 | { .mask = H2_EV_H2C_WAKE, .name = "h2c_wake", .desc = "H2 connection woken up" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 270 | #define H2_EV_H2C_END (1ULL << 6) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 271 | { .mask = H2_EV_H2C_END, .name = "h2c_end", .desc = "H2 connection terminated" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 272 | #define H2_EV_H2C_ERR (1ULL << 7) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 273 | { .mask = H2_EV_H2C_ERR, .name = "h2c_err", .desc = "error on H2 connection" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 274 | #define H2_EV_RX_FHDR (1ULL << 8) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 275 | { .mask = H2_EV_RX_FHDR, .name = "rx_fhdr", .desc = "H2 frame header received" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 276 | #define H2_EV_RX_FRAME (1ULL << 9) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 277 | { .mask = H2_EV_RX_FRAME, .name = "rx_frame", .desc = "receipt of any H2 frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 278 | #define H2_EV_RX_EOI (1ULL << 10) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 279 | { .mask = H2_EV_RX_EOI, .name = "rx_eoi", .desc = "receipt of end of H2 input (ES or RST)" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 280 | #define H2_EV_RX_PREFACE (1ULL << 11) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 281 | { .mask = H2_EV_RX_PREFACE, .name = "rx_preface", .desc = "receipt of H2 preface" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 282 | #define H2_EV_RX_DATA (1ULL << 12) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 283 | { .mask = H2_EV_RX_DATA, .name = "rx_data", .desc = "receipt of H2 DATA frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 284 | #define H2_EV_RX_HDR (1ULL << 13) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 285 | { .mask = H2_EV_RX_HDR, .name = "rx_hdr", .desc = "receipt of H2 HEADERS frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 286 | #define H2_EV_RX_PRIO (1ULL << 14) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 287 | { .mask = H2_EV_RX_PRIO, .name = "rx_prio", .desc = "receipt of H2 PRIORITY frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 288 | #define H2_EV_RX_RST (1ULL << 15) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 289 | { .mask = H2_EV_RX_RST, .name = "rx_rst", .desc = "receipt of H2 RST_STREAM frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 290 | #define H2_EV_RX_SETTINGS (1ULL << 16) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 291 | { .mask = H2_EV_RX_SETTINGS, .name = "rx_settings", .desc = "receipt of H2 SETTINGS frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 292 | #define H2_EV_RX_PUSH (1ULL << 17) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 293 | { .mask = H2_EV_RX_PUSH, .name = "rx_push", .desc = "receipt of H2 PUSH_PROMISE frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 294 | #define H2_EV_RX_PING (1ULL << 18) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 295 | { .mask = H2_EV_RX_PING, .name = "rx_ping", .desc = "receipt of H2 PING frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 296 | #define H2_EV_RX_GOAWAY (1ULL << 19) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 297 | { .mask = H2_EV_RX_GOAWAY, .name = "rx_goaway", .desc = "receipt of H2 GOAWAY frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 298 | #define H2_EV_RX_WU (1ULL << 20) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 299 | { .mask = H2_EV_RX_WU, .name = "rx_wu", .desc = "receipt of H2 WINDOW_UPDATE frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 300 | #define H2_EV_RX_CONT (1ULL << 21) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 301 | { .mask = H2_EV_RX_CONT, .name = "rx_cont", .desc = "receipt of H2 CONTINUATION frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 302 | #define H2_EV_TX_FRAME (1ULL << 22) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 303 | { .mask = H2_EV_TX_FRAME, .name = "tx_frame", .desc = "transmission of any H2 frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 304 | #define H2_EV_TX_EOI (1ULL << 23) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 305 | { .mask = H2_EV_TX_EOI, .name = "tx_eoi", .desc = "transmission of H2 end of input (ES or RST)" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 306 | #define H2_EV_TX_PREFACE (1ULL << 24) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 307 | { .mask = H2_EV_TX_PREFACE, .name = "tx_preface", .desc = "transmission of H2 preface" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 308 | #define H2_EV_TX_DATA (1ULL << 25) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 309 | { .mask = H2_EV_TX_DATA, .name = "tx_data", .desc = "transmission of H2 DATA frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 310 | #define H2_EV_TX_HDR (1ULL << 26) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 311 | { .mask = H2_EV_TX_HDR, .name = "tx_hdr", .desc = "transmission of H2 HEADERS frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 312 | #define H2_EV_TX_PRIO (1ULL << 27) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 313 | { .mask = H2_EV_TX_PRIO, .name = "tx_prio", .desc = "transmission of H2 PRIORITY frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 314 | #define H2_EV_TX_RST (1ULL << 28) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 315 | { .mask = H2_EV_TX_RST, .name = "tx_rst", .desc = "transmission of H2 RST_STREAM frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 316 | #define H2_EV_TX_SETTINGS (1ULL << 29) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 317 | { .mask = H2_EV_TX_SETTINGS, .name = "tx_settings", .desc = "transmission of H2 SETTINGS frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 318 | #define H2_EV_TX_PUSH (1ULL << 30) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 319 | { .mask = H2_EV_TX_PUSH, .name = "tx_push", .desc = "transmission of H2 PUSH_PROMISE frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 320 | #define H2_EV_TX_PING (1ULL << 31) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 321 | { .mask = H2_EV_TX_PING, .name = "tx_ping", .desc = "transmission of H2 PING frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 322 | #define H2_EV_TX_GOAWAY (1ULL << 32) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 323 | { .mask = H2_EV_TX_GOAWAY, .name = "tx_goaway", .desc = "transmission of H2 GOAWAY frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 324 | #define H2_EV_TX_WU (1ULL << 33) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 325 | { .mask = H2_EV_TX_WU, .name = "tx_wu", .desc = "transmission of H2 WINDOW_UPDATE frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 326 | #define H2_EV_TX_CONT (1ULL << 34) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 327 | { .mask = H2_EV_TX_CONT, .name = "tx_cont", .desc = "transmission of H2 CONTINUATION frame" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 328 | #define H2_EV_H2S_NEW (1ULL << 35) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 329 | { .mask = H2_EV_H2S_NEW, .name = "h2s_new", .desc = "new H2 stream" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 330 | #define H2_EV_H2S_RECV (1ULL << 36) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 331 | { .mask = H2_EV_H2S_RECV, .name = "h2s_recv", .desc = "Rx for H2 stream" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 332 | #define H2_EV_H2S_SEND (1ULL << 37) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 333 | { .mask = H2_EV_H2S_SEND, .name = "h2s_send", .desc = "Tx for H2 stream" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 334 | #define H2_EV_H2S_FCTL (1ULL << 38) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 335 | { .mask = H2_EV_H2S_FCTL, .name = "h2s_fctl", .desc = "H2 stream flow-controlled" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 336 | #define H2_EV_H2S_BLK (1ULL << 39) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 337 | { .mask = H2_EV_H2S_BLK, .name = "h2s_blk", .desc = "H2 stream blocked" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 338 | #define H2_EV_H2S_WAKE (1ULL << 40) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 339 | { .mask = H2_EV_H2S_WAKE, .name = "h2s_wake", .desc = "H2 stream woken up" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 340 | #define H2_EV_H2S_END (1ULL << 41) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 341 | { .mask = H2_EV_H2S_END, .name = "h2s_end", .desc = "H2 stream terminated" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 342 | #define H2_EV_H2S_ERR (1ULL << 42) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 343 | { .mask = H2_EV_H2S_ERR, .name = "h2s_err", .desc = "error on H2 stream" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 344 | #define H2_EV_STRM_NEW (1ULL << 43) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 345 | { .mask = H2_EV_STRM_NEW, .name = "strm_new", .desc = "app-layer stream creation" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 346 | #define H2_EV_STRM_RECV (1ULL << 44) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 347 | { .mask = H2_EV_STRM_RECV, .name = "strm_recv", .desc = "receiving data for stream" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 348 | #define H2_EV_STRM_SEND (1ULL << 45) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 349 | { .mask = H2_EV_STRM_SEND, .name = "strm_send", .desc = "sending data for stream" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 350 | #define H2_EV_STRM_FULL (1ULL << 46) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 351 | { .mask = H2_EV_STRM_FULL, .name = "strm_full", .desc = "stream buffer full" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 352 | #define H2_EV_STRM_WAKE (1ULL << 47) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 353 | { .mask = H2_EV_STRM_WAKE, .name = "strm_wake", .desc = "stream woken up" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 354 | #define H2_EV_STRM_SHUT (1ULL << 48) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 355 | { .mask = H2_EV_STRM_SHUT, .name = "strm_shut", .desc = "stream shutdown" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 356 | #define H2_EV_STRM_END (1ULL << 49) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 357 | { .mask = H2_EV_STRM_END, .name = "strm_end", .desc = "detaching app-layer stream" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 358 | #define H2_EV_STRM_ERR (1ULL << 50) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 359 | { .mask = H2_EV_STRM_ERR, .name = "strm_err", .desc = "stream error" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 360 | #define H2_EV_PROTO_ERR (1ULL << 51) |
Willy Tarreau | 8795194 | 2019-08-30 07:34:36 +0200 | [diff] [blame] | 361 | { .mask = H2_EV_PROTO_ERR, .name = "proto_err", .desc = "protocol error" }, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 362 | { } |
| 363 | }; |
| 364 | |
| 365 | static const struct name_desc h2_trace_lockon_args[4] = { |
| 366 | /* arg1 */ { /* already used by the connection */ }, |
| 367 | /* arg2 */ { .name="h2s", .desc="H2 stream" }, |
| 368 | /* arg3 */ { }, |
| 369 | /* arg4 */ { } |
| 370 | }; |
| 371 | |
| 372 | static const struct name_desc h2_trace_decoding[] = { |
Willy Tarreau | f7dd519 | 2019-08-30 07:21:18 +0200 | [diff] [blame] | 373 | #define H2_VERB_CLEAN 1 |
| 374 | { .name="clean", .desc="only user-friendly stuff, generally suitable for level \"user\"" }, |
| 375 | #define H2_VERB_MINIMAL 2 |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 376 | { .name="minimal", .desc="report only h2c/h2s state and flags, no real decoding" }, |
Willy Tarreau | f7dd519 | 2019-08-30 07:21:18 +0200 | [diff] [blame] | 377 | #define H2_VERB_SIMPLE 3 |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 378 | { .name="simple", .desc="add request/response status line or frame info when available" }, |
Willy Tarreau | f7dd519 | 2019-08-30 07:21:18 +0200 | [diff] [blame] | 379 | #define H2_VERB_ADVANCED 4 |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 380 | { .name="advanced", .desc="add header fields or frame decoding when available" }, |
Willy Tarreau | f7dd519 | 2019-08-30 07:21:18 +0200 | [diff] [blame] | 381 | #define H2_VERB_COMPLETE 5 |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 382 | { .name="complete", .desc="add full data dump when available" }, |
| 383 | { /* end */ } |
| 384 | }; |
| 385 | |
Willy Tarreau | 6eb3d37 | 2021-04-10 19:29:26 +0200 | [diff] [blame] | 386 | static struct trace_source trace_h2 __read_mostly = { |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 387 | .name = IST("h2"), |
| 388 | .desc = "HTTP/2 multiplexer", |
| 389 | .arg_def = TRC_ARG1_CONN, // TRACE()'s first argument is always a connection |
Willy Tarreau | db3cfff | 2019-08-19 17:56:27 +0200 | [diff] [blame] | 390 | .default_cb = h2_trace, |
Willy Tarreau | 12ae212 | 2019-08-08 18:23:12 +0200 | [diff] [blame] | 391 | .known_events = h2_trace_events, |
| 392 | .lockon_args = h2_trace_lockon_args, |
| 393 | .decoding = h2_trace_decoding, |
| 394 | .report_events = ~0, // report everything by default |
| 395 | }; |
| 396 | |
| 397 | #define TRACE_SOURCE &trace_h2 |
| 398 | INITCALL1(STG_REGISTER, trace_register_source, TRACE_SOURCE); |
| 399 | |
Amaury Denoyelle | 3238b3f | 2020-10-27 17:16:00 +0100 | [diff] [blame] | 400 | /* h2 stats module */ |
| 401 | enum { |
Amaury Denoyelle | 2dec1eb | 2020-10-27 17:16:02 +0100 | [diff] [blame] | 402 | H2_ST_HEADERS_RCVD, |
| 403 | H2_ST_DATA_RCVD, |
| 404 | H2_ST_SETTINGS_RCVD, |
| 405 | H2_ST_RST_STREAM_RCVD, |
| 406 | H2_ST_GOAWAY_RCVD, |
| 407 | |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 408 | H2_ST_CONN_PROTO_ERR, |
| 409 | H2_ST_STRM_PROTO_ERR, |
| 410 | H2_ST_RST_STREAM_RESP, |
| 411 | H2_ST_GOAWAY_RESP, |
| 412 | |
Amaury Denoyelle | 66942c1 | 2020-10-27 17:16:04 +0100 | [diff] [blame] | 413 | H2_ST_OPEN_CONN, |
| 414 | H2_ST_OPEN_STREAM, |
Amaury Denoyelle | e7b891f | 2020-11-03 15:04:45 +0100 | [diff] [blame] | 415 | H2_ST_TOTAL_CONN, |
| 416 | H2_ST_TOTAL_STREAM, |
Amaury Denoyelle | 66942c1 | 2020-10-27 17:16:04 +0100 | [diff] [blame] | 417 | |
Amaury Denoyelle | 3238b3f | 2020-10-27 17:16:00 +0100 | [diff] [blame] | 418 | H2_STATS_COUNT /* must be the last member of the enum */ |
| 419 | }; |
| 420 | |
| 421 | static struct name_desc h2_stats[] = { |
Amaury Denoyelle | 2dec1eb | 2020-10-27 17:16:02 +0100 | [diff] [blame] | 422 | [H2_ST_HEADERS_RCVD] = { .name = "h2_headers_rcvd", |
Amaury Denoyelle | 2ac34d9 | 2020-11-03 15:04:44 +0100 | [diff] [blame] | 423 | .desc = "Total number of received HEADERS frames" }, |
Amaury Denoyelle | 2dec1eb | 2020-10-27 17:16:02 +0100 | [diff] [blame] | 424 | [H2_ST_DATA_RCVD] = { .name = "h2_data_rcvd", |
Amaury Denoyelle | 2ac34d9 | 2020-11-03 15:04:44 +0100 | [diff] [blame] | 425 | .desc = "Total number of received DATA frames" }, |
Amaury Denoyelle | 2dec1eb | 2020-10-27 17:16:02 +0100 | [diff] [blame] | 426 | [H2_ST_SETTINGS_RCVD] = { .name = "h2_settings_rcvd", |
Amaury Denoyelle | 2ac34d9 | 2020-11-03 15:04:44 +0100 | [diff] [blame] | 427 | .desc = "Total number of received SETTINGS frames" }, |
Amaury Denoyelle | 2dec1eb | 2020-10-27 17:16:02 +0100 | [diff] [blame] | 428 | [H2_ST_RST_STREAM_RCVD] = { .name = "h2_rst_stream_rcvd", |
Amaury Denoyelle | 2ac34d9 | 2020-11-03 15:04:44 +0100 | [diff] [blame] | 429 | .desc = "Total number of received RST_STREAM frames" }, |
Amaury Denoyelle | 2dec1eb | 2020-10-27 17:16:02 +0100 | [diff] [blame] | 430 | [H2_ST_GOAWAY_RCVD] = { .name = "h2_goaway_rcvd", |
Amaury Denoyelle | 2ac34d9 | 2020-11-03 15:04:44 +0100 | [diff] [blame] | 431 | .desc = "Total number of received GOAWAY frames" }, |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 432 | |
| 433 | [H2_ST_CONN_PROTO_ERR] = { .name = "h2_detected_conn_protocol_errors", |
| 434 | .desc = "Total number of connection protocol errors" }, |
| 435 | [H2_ST_STRM_PROTO_ERR] = { .name = "h2_detected_strm_protocol_errors", |
| 436 | .desc = "Total number of stream protocol errors" }, |
| 437 | [H2_ST_RST_STREAM_RESP] = { .name = "h2_rst_stream_resp", |
Amaury Denoyelle | 2ac34d9 | 2020-11-03 15:04:44 +0100 | [diff] [blame] | 438 | .desc = "Total number of RST_STREAM sent on detected error" }, |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 439 | [H2_ST_GOAWAY_RESP] = { .name = "h2_goaway_resp", |
Amaury Denoyelle | 2ac34d9 | 2020-11-03 15:04:44 +0100 | [diff] [blame] | 440 | .desc = "Total number of GOAWAY sent on detected error" }, |
Amaury Denoyelle | 66942c1 | 2020-10-27 17:16:04 +0100 | [diff] [blame] | 441 | |
Amaury Denoyelle | e7b891f | 2020-11-03 15:04:45 +0100 | [diff] [blame] | 442 | [H2_ST_OPEN_CONN] = { .name = "h2_open_connections", |
| 443 | .desc = "Count of currently open connections" }, |
| 444 | [H2_ST_OPEN_STREAM] = { .name = "h2_backend_open_streams", |
| 445 | .desc = "Count of currently open streams" }, |
Amaury Denoyelle | 377d878 | 2021-02-03 16:27:22 +0100 | [diff] [blame] | 446 | [H2_ST_TOTAL_CONN] = { .name = "h2_total_connections", |
Amaury Denoyelle | e7b891f | 2020-11-03 15:04:45 +0100 | [diff] [blame] | 447 | .desc = "Total number of connections" }, |
Amaury Denoyelle | 377d878 | 2021-02-03 16:27:22 +0100 | [diff] [blame] | 448 | [H2_ST_TOTAL_STREAM] = { .name = "h2_backend_total_streams", |
Amaury Denoyelle | e7b891f | 2020-11-03 15:04:45 +0100 | [diff] [blame] | 449 | .desc = "Total number of streams" }, |
Amaury Denoyelle | 3238b3f | 2020-10-27 17:16:00 +0100 | [diff] [blame] | 450 | }; |
| 451 | |
| 452 | static struct h2_counters { |
Amaury Denoyelle | 2ac34d9 | 2020-11-03 15:04:44 +0100 | [diff] [blame] | 453 | long long headers_rcvd; /* total number of HEADERS frame received */ |
| 454 | long long data_rcvd; /* total number of DATA frame received */ |
| 455 | long long settings_rcvd; /* total number of SETTINGS frame received */ |
| 456 | long long rst_stream_rcvd; /* total number of RST_STREAM frame received */ |
| 457 | long long goaway_rcvd; /* total number of GOAWAY frame received */ |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 458 | |
| 459 | long long conn_proto_err; /* total number of protocol errors detected */ |
| 460 | long long strm_proto_err; /* total number of protocol errors detected */ |
Amaury Denoyelle | 2ac34d9 | 2020-11-03 15:04:44 +0100 | [diff] [blame] | 461 | long long rst_stream_resp; /* total number of RST_STREAM frame sent on error */ |
| 462 | long long goaway_resp; /* total number of GOAWAY frame sent on error */ |
Amaury Denoyelle | 66942c1 | 2020-10-27 17:16:04 +0100 | [diff] [blame] | 463 | |
Amaury Denoyelle | e7b891f | 2020-11-03 15:04:45 +0100 | [diff] [blame] | 464 | long long open_conns; /* count of currently open connections */ |
| 465 | long long open_streams; /* count of currently open streams */ |
| 466 | long long total_conns; /* total number of connections */ |
| 467 | long long total_streams; /* total number of streams */ |
Amaury Denoyelle | 3238b3f | 2020-10-27 17:16:00 +0100 | [diff] [blame] | 468 | } h2_counters; |
| 469 | |
| 470 | static void h2_fill_stats(void *data, struct field *stats) |
| 471 | { |
Amaury Denoyelle | 2dec1eb | 2020-10-27 17:16:02 +0100 | [diff] [blame] | 472 | struct h2_counters *counters = data; |
| 473 | |
| 474 | stats[H2_ST_HEADERS_RCVD] = mkf_u64(FN_COUNTER, counters->headers_rcvd); |
| 475 | stats[H2_ST_DATA_RCVD] = mkf_u64(FN_COUNTER, counters->data_rcvd); |
| 476 | stats[H2_ST_SETTINGS_RCVD] = mkf_u64(FN_COUNTER, counters->settings_rcvd); |
| 477 | stats[H2_ST_RST_STREAM_RCVD] = mkf_u64(FN_COUNTER, counters->rst_stream_rcvd); |
| 478 | stats[H2_ST_GOAWAY_RCVD] = mkf_u64(FN_COUNTER, counters->goaway_rcvd); |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 479 | |
| 480 | stats[H2_ST_CONN_PROTO_ERR] = mkf_u64(FN_COUNTER, counters->conn_proto_err); |
| 481 | stats[H2_ST_STRM_PROTO_ERR] = mkf_u64(FN_COUNTER, counters->strm_proto_err); |
| 482 | stats[H2_ST_RST_STREAM_RESP] = mkf_u64(FN_COUNTER, counters->rst_stream_resp); |
| 483 | stats[H2_ST_GOAWAY_RESP] = mkf_u64(FN_COUNTER, counters->goaway_resp); |
Amaury Denoyelle | 66942c1 | 2020-10-27 17:16:04 +0100 | [diff] [blame] | 484 | |
Amaury Denoyelle | e7b891f | 2020-11-03 15:04:45 +0100 | [diff] [blame] | 485 | stats[H2_ST_OPEN_CONN] = mkf_u64(FN_GAUGE, counters->open_conns); |
| 486 | stats[H2_ST_OPEN_STREAM] = mkf_u64(FN_GAUGE, counters->open_streams); |
| 487 | stats[H2_ST_TOTAL_CONN] = mkf_u64(FN_COUNTER, counters->total_conns); |
| 488 | stats[H2_ST_TOTAL_STREAM] = mkf_u64(FN_COUNTER, counters->total_streams); |
Amaury Denoyelle | 3238b3f | 2020-10-27 17:16:00 +0100 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | static struct stats_module h2_stats_module = { |
| 492 | .name = "h2", |
| 493 | .fill_stats = h2_fill_stats, |
| 494 | .stats = h2_stats, |
| 495 | .stats_count = H2_STATS_COUNT, |
| 496 | .counters = &h2_counters, |
| 497 | .counters_size = sizeof(h2_counters), |
| 498 | .domain_flags = MK_STATS_PROXY_DOMAIN(STATS_PX_CAP_FE|STATS_PX_CAP_BE), |
| 499 | .clearable = 1, |
| 500 | }; |
| 501 | |
| 502 | INITCALL1(STG_REGISTER, stats_register_module, &h2_stats_module); |
| 503 | |
Willy Tarreau | 8ceae72 | 2018-11-26 11:58:30 +0100 | [diff] [blame] | 504 | /* the h2c connection pool */ |
| 505 | DECLARE_STATIC_POOL(pool_head_h2c, "h2c", sizeof(struct h2c)); |
| 506 | |
| 507 | /* the h2s stream pool */ |
| 508 | DECLARE_STATIC_POOL(pool_head_h2s, "h2s", sizeof(struct h2s)); |
| 509 | |
Willy Tarreau | dc57236 | 2018-12-12 08:08:05 +0100 | [diff] [blame] | 510 | /* The default connection window size is 65535, it may only be enlarged using |
| 511 | * a WINDOW_UPDATE message. Since the window must never be larger than 2G-1, |
| 512 | * we'll pretend we already received the difference between the two to send |
| 513 | * an equivalent window update to enlarge it to 2G-1. |
| 514 | */ |
| 515 | #define H2_INITIAL_WINDOW_INCREMENT ((1U<<31)-1 - 65535) |
| 516 | |
Willy Tarreau | 455d568 | 2019-05-24 19:42:18 +0200 | [diff] [blame] | 517 | /* maximum amount of data we're OK with re-aligning for buffer optimizations */ |
| 518 | #define MAX_DATA_REALIGN 1024 |
| 519 | |
Willy Tarreau | fe20e5b | 2017-07-27 11:42:14 +0200 | [diff] [blame] | 520 | /* a few settings from the global section */ |
| 521 | static int h2_settings_header_table_size = 4096; /* initial value */ |
Willy Tarreau | e6baec0 | 2017-07-27 11:45:11 +0200 | [diff] [blame] | 522 | static int h2_settings_initial_window_size = 65535; /* initial value */ |
Willy Tarreau | 5a490b6 | 2019-01-31 10:39:51 +0100 | [diff] [blame] | 523 | static unsigned int h2_settings_max_concurrent_streams = 100; |
Willy Tarreau | a24b35c | 2019-02-21 13:24:36 +0100 | [diff] [blame] | 524 | static int h2_settings_max_frame_size = 0; /* unset */ |
Willy Tarreau | fe20e5b | 2017-07-27 11:42:14 +0200 | [diff] [blame] | 525 | |
Willy Tarreau | 2a85618 | 2017-05-16 15:20:39 +0200 | [diff] [blame] | 526 | /* a dmumy closed stream */ |
| 527 | static const struct h2s *h2_closed_stream = &(const struct h2s){ |
| 528 | .cs = NULL, |
| 529 | .h2c = NULL, |
| 530 | .st = H2_SS_CLOSED, |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 531 | .errcode = H2_ERR_STREAM_CLOSED, |
Willy Tarreau | ab83750 | 2017-12-27 15:07:30 +0100 | [diff] [blame] | 532 | .flags = H2_SF_RST_RCVD, |
Willy Tarreau | 2a85618 | 2017-05-16 15:20:39 +0200 | [diff] [blame] | 533 | .id = 0, |
| 534 | }; |
| 535 | |
Willy Tarreau | ecb9dcd | 2019-01-03 12:00:17 +0100 | [diff] [blame] | 536 | /* a dmumy closed stream returning a PROTOCOL_ERROR error */ |
| 537 | static const struct h2s *h2_error_stream = &(const struct h2s){ |
| 538 | .cs = NULL, |
| 539 | .h2c = NULL, |
| 540 | .st = H2_SS_CLOSED, |
| 541 | .errcode = H2_ERR_PROTOCOL_ERROR, |
| 542 | .flags = 0, |
| 543 | .id = 0, |
| 544 | }; |
| 545 | |
Willy Tarreau | 8d0d58b | 2018-12-23 18:29:12 +0100 | [diff] [blame] | 546 | /* a dmumy closed stream returning a REFUSED_STREAM error */ |
| 547 | static const struct h2s *h2_refused_stream = &(const struct h2s){ |
| 548 | .cs = NULL, |
| 549 | .h2c = NULL, |
| 550 | .st = H2_SS_CLOSED, |
| 551 | .errcode = H2_ERR_REFUSED_STREAM, |
| 552 | .flags = 0, |
| 553 | .id = 0, |
| 554 | }; |
| 555 | |
Willy Tarreau | 2a85618 | 2017-05-16 15:20:39 +0200 | [diff] [blame] | 556 | /* and a dummy idle stream for use with any unannounced stream */ |
| 557 | static const struct h2s *h2_idle_stream = &(const struct h2s){ |
| 558 | .cs = NULL, |
| 559 | .h2c = NULL, |
| 560 | .st = H2_SS_IDLE, |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 561 | .errcode = H2_ERR_STREAM_CLOSED, |
Willy Tarreau | 2a85618 | 2017-05-16 15:20:39 +0200 | [diff] [blame] | 562 | .id = 0, |
| 563 | }; |
| 564 | |
Willy Tarreau | 144f84a | 2021-03-02 16:09:26 +0100 | [diff] [blame] | 565 | struct task *h2_timeout_task(struct task *t, void *context, unsigned int state); |
Olivier Houchard | d4dd22d | 2018-08-17 18:39:46 +0200 | [diff] [blame] | 566 | static int h2_send(struct h2c *h2c); |
| 567 | static int h2_recv(struct h2c *h2c); |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 568 | static int h2_process(struct h2c *h2c); |
Willy Tarreau | 691d503 | 2021-01-20 14:55:01 +0100 | [diff] [blame] | 569 | /* h2_io_cb is exported to see it resolved in "show fd" */ |
Willy Tarreau | 144f84a | 2021-03-02 16:09:26 +0100 | [diff] [blame] | 570 | struct task *h2_io_cb(struct task *t, void *ctx, unsigned int state); |
Willy Tarreau | 0b55907 | 2018-02-26 15:22:17 +0100 | [diff] [blame] | 571 | static inline struct h2s *h2c_st_by_id(struct h2c *h2c, int id); |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 572 | static int h2c_decode_headers(struct h2c *h2c, struct buffer *rxbuf, uint32_t *flags, unsigned long long *body_len, char *upgrade_protocol); |
Willy Tarreau | a56a6de | 2018-02-26 15:59:07 +0100 | [diff] [blame] | 573 | static int h2_frt_transfer_data(struct h2s *h2s); |
Willy Tarreau | 144f84a | 2021-03-02 16:09:26 +0100 | [diff] [blame] | 574 | struct task *h2_deferred_shut(struct task *t, void *ctx, unsigned int state); |
Olivier Houchard | f502aca | 2018-12-14 19:42:40 +0100 | [diff] [blame] | 575 | static struct h2s *h2c_bck_stream_new(struct h2c *h2c, struct conn_stream *cs, struct session *sess); |
Willy Tarreau | 8b2757c | 2018-12-19 17:36:48 +0100 | [diff] [blame] | 576 | static void h2s_alert(struct h2s *h2s); |
Willy Tarreau | fe20e5b | 2017-07-27 11:42:14 +0200 | [diff] [blame] | 577 | |
Willy Tarreau | ab2ec45 | 2019-08-30 07:07:08 +0200 | [diff] [blame] | 578 | /* returns a h2c state as an abbreviated 3-letter string, or "???" if unknown */ |
| 579 | static inline const char *h2c_st_to_str(enum h2_cs st) |
| 580 | { |
| 581 | switch (st) { |
| 582 | case H2_CS_PREFACE: return "PRF"; |
| 583 | case H2_CS_SETTINGS1: return "STG"; |
| 584 | case H2_CS_FRAME_H: return "FRH"; |
| 585 | case H2_CS_FRAME_P: return "FRP"; |
| 586 | case H2_CS_FRAME_A: return "FRA"; |
| 587 | case H2_CS_FRAME_E: return "FRE"; |
| 588 | case H2_CS_ERROR: return "ERR"; |
| 589 | case H2_CS_ERROR2: return "ER2"; |
| 590 | default: return "???"; |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | /* returns a h2s state as an abbreviated 3-letter string, or "???" if unknown */ |
| 595 | static inline const char *h2s_st_to_str(enum h2_ss st) |
| 596 | { |
| 597 | switch (st) { |
| 598 | case H2_SS_IDLE: return "IDL"; // idle |
| 599 | case H2_SS_RLOC: return "RSL"; // reserved local |
| 600 | case H2_SS_RREM: return "RSR"; // reserved remote |
| 601 | case H2_SS_OPEN: return "OPN"; // open |
| 602 | case H2_SS_HREM: return "HCR"; // half-closed remote |
| 603 | case H2_SS_HLOC: return "HCL"; // half-closed local |
| 604 | case H2_SS_ERROR : return "ERR"; // error |
| 605 | case H2_SS_CLOSED: return "CLO"; // closed |
| 606 | default: return "???"; |
| 607 | } |
| 608 | } |
| 609 | |
Willy Tarreau | db3cfff | 2019-08-19 17:56:27 +0200 | [diff] [blame] | 610 | /* the H2 traces always expect that arg1, if non-null, is of type connection |
| 611 | * (from which we can derive h2c), that arg2, if non-null, is of type h2s, and |
| 612 | * that arg3, if non-null, is either of type htx for tx headers, or of type |
| 613 | * buffer for everything else. |
| 614 | */ |
| 615 | static void h2_trace(enum trace_level level, uint64_t mask, const struct trace_source *src, |
| 616 | const struct ist where, const struct ist func, |
| 617 | const void *a1, const void *a2, const void *a3, const void *a4) |
| 618 | { |
| 619 | const struct connection *conn = a1; |
| 620 | const struct h2c *h2c = conn ? conn->ctx : NULL; |
| 621 | const struct h2s *h2s = a2; |
| 622 | const struct buffer *buf = a3; |
| 623 | const struct htx *htx; |
| 624 | int pos; |
| 625 | |
| 626 | if (!h2c) // nothing to add |
| 627 | return; |
| 628 | |
Willy Tarreau | 17104d4 | 2019-08-30 07:12:55 +0200 | [diff] [blame] | 629 | if (src->verbosity > H2_VERB_CLEAN) { |
Willy Tarreau | 73db434 | 2019-09-25 07:28:44 +0200 | [diff] [blame] | 630 | chunk_appendf(&trace_buf, " : h2c=%p(%c,%s)", h2c, conn_is_back(conn) ? 'B' : 'F', h2c_st_to_str(h2c->st0)); |
| 631 | |
Willy Tarreau | 8e6f749 | 2021-06-16 17:47:24 +0200 | [diff] [blame] | 632 | if (mask & H2_EV_H2C_NEW) // inside h2_init, otherwise it's hard to match conn & h2c |
| 633 | conn_append_debug_info(&trace_buf, conn, " : "); |
| 634 | |
Willy Tarreau | f3ce041 | 2019-11-24 14:57:00 +0100 | [diff] [blame] | 635 | if (h2c->errcode) |
| 636 | chunk_appendf(&trace_buf, " err=%s/%02x", h2_err_str(h2c->errcode), h2c->errcode); |
| 637 | |
Willy Tarreau | 73db434 | 2019-09-25 07:28:44 +0200 | [diff] [blame] | 638 | if (h2c->dsi >= 0 && |
| 639 | (mask & (H2_EV_RX_FRAME|H2_EV_RX_FHDR)) == (H2_EV_RX_FRAME|H2_EV_RX_FHDR)) { |
Willy Tarreau | 8520d87 | 2020-09-18 07:39:29 +0200 | [diff] [blame] | 640 | chunk_appendf(&trace_buf, " dft=%s/%02x dfl=%d", h2_ft_str(h2c->dft), h2c->dff, h2c->dfl); |
Willy Tarreau | 73db434 | 2019-09-25 07:28:44 +0200 | [diff] [blame] | 641 | } |
| 642 | |
| 643 | if (h2s) { |
| 644 | if (h2s->id <= 0) |
| 645 | chunk_appendf(&trace_buf, " dsi=%d", h2c->dsi); |
| 646 | chunk_appendf(&trace_buf, " h2s=%p(%d,%s)", h2s, h2s->id, h2s_st_to_str(h2s->st)); |
Willy Tarreau | f3ce041 | 2019-11-24 14:57:00 +0100 | [diff] [blame] | 647 | if (h2s->id && h2s->errcode) |
| 648 | chunk_appendf(&trace_buf, " err=%s/%02x", h2_err_str(h2s->errcode), h2s->errcode); |
Willy Tarreau | 73db434 | 2019-09-25 07:28:44 +0200 | [diff] [blame] | 649 | } |
Willy Tarreau | db3cfff | 2019-08-19 17:56:27 +0200 | [diff] [blame] | 650 | } |
| 651 | |
| 652 | /* Let's dump decoded requests and responses right after parsing. They |
| 653 | * are traced at level USER with a few recognizable flags. |
| 654 | */ |
| 655 | if ((mask == (H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_STRM_NEW) || |
| 656 | mask == (H2_EV_RX_FRAME|H2_EV_RX_HDR)) && buf) |
| 657 | htx = htxbuf(buf); // recv req/res |
| 658 | else if (mask == (H2_EV_TX_FRAME|H2_EV_TX_HDR)) |
| 659 | htx = a3; // send req/res |
| 660 | else |
| 661 | htx = NULL; |
| 662 | |
Willy Tarreau | 94f1dcf | 2019-08-30 07:11:30 +0200 | [diff] [blame] | 663 | if (level == TRACE_LEVEL_USER && src->verbosity != H2_VERB_MINIMAL && htx && (pos = htx_get_head(htx)) != -1) { |
Willy Tarreau | db3cfff | 2019-08-19 17:56:27 +0200 | [diff] [blame] | 664 | const struct htx_blk *blk = htx_get_blk(htx, pos); |
| 665 | const struct htx_sl *sl = htx_get_blk_ptr(htx, blk); |
| 666 | enum htx_blk_type type = htx_get_blk_type(blk); |
| 667 | |
| 668 | if (type == HTX_BLK_REQ_SL) |
| 669 | chunk_appendf(&trace_buf, " : [%d] H2 REQ: %.*s %.*s %.*s", |
Willy Tarreau | c067a3a | 2019-08-30 07:28:24 +0200 | [diff] [blame] | 670 | h2s ? h2s->id : h2c->dsi, |
Willy Tarreau | db3cfff | 2019-08-19 17:56:27 +0200 | [diff] [blame] | 671 | HTX_SL_P1_LEN(sl), HTX_SL_P1_PTR(sl), |
| 672 | HTX_SL_P2_LEN(sl), HTX_SL_P2_PTR(sl), |
| 673 | HTX_SL_P3_LEN(sl), HTX_SL_P3_PTR(sl)); |
| 674 | else if (type == HTX_BLK_RES_SL) |
| 675 | chunk_appendf(&trace_buf, " : [%d] H2 RES: %.*s %.*s %.*s", |
Willy Tarreau | c067a3a | 2019-08-30 07:28:24 +0200 | [diff] [blame] | 676 | h2s ? h2s->id : h2c->dsi, |
Willy Tarreau | db3cfff | 2019-08-19 17:56:27 +0200 | [diff] [blame] | 677 | HTX_SL_P1_LEN(sl), HTX_SL_P1_PTR(sl), |
| 678 | HTX_SL_P2_LEN(sl), HTX_SL_P2_PTR(sl), |
| 679 | HTX_SL_P3_LEN(sl), HTX_SL_P3_PTR(sl)); |
| 680 | } |
| 681 | } |
| 682 | |
Christopher Faulet | aade4ed | 2020-10-08 15:38:41 +0200 | [diff] [blame] | 683 | |
Willy Tarreau | 3d4631f | 2021-01-20 10:53:13 +0100 | [diff] [blame] | 684 | /* Detect a pending read0 for a H2 connection. It happens if a read0 was |
| 685 | * already reported on a previous xprt->rcvbuf() AND a frame parser failed |
| 686 | * to parse pending data, confirming no more progress is possible because |
| 687 | * we're facing a truncated frame. The function returns 1 to report a read0 |
| 688 | * or 0 otherwise. |
Christopher Faulet | aade4ed | 2020-10-08 15:38:41 +0200 | [diff] [blame] | 689 | */ |
Willy Tarreau | 3d4631f | 2021-01-20 10:53:13 +0100 | [diff] [blame] | 690 | static inline int h2c_read0_pending(struct h2c *h2c) |
Christopher Faulet | aade4ed | 2020-10-08 15:38:41 +0200 | [diff] [blame] | 691 | { |
Willy Tarreau | 3d4631f | 2021-01-20 10:53:13 +0100 | [diff] [blame] | 692 | return !!(h2c->flags & H2_CF_END_REACHED); |
Christopher Faulet | aade4ed | 2020-10-08 15:38:41 +0200 | [diff] [blame] | 693 | } |
| 694 | |
Willy Tarreau | c2ea47f | 2019-10-01 10:12:00 +0200 | [diff] [blame] | 695 | /* returns true if the connection is allowed to expire, false otherwise. A |
Willy Tarreau | 3439583 | 2022-03-18 14:59:54 +0100 | [diff] [blame] | 696 | * connection may expire when it has no attached streams. As long as streams |
| 697 | * are attached, the application layer is responsible for timeout management, |
| 698 | * and each layer will detach when it doesn't want to wait anymore. When the |
| 699 | * last one leaves, the connection must take over timeout management. |
Willy Tarreau | c2ea47f | 2019-10-01 10:12:00 +0200 | [diff] [blame] | 700 | */ |
| 701 | static inline int h2c_may_expire(const struct h2c *h2c) |
| 702 | { |
Willy Tarreau | 3439583 | 2022-03-18 14:59:54 +0100 | [diff] [blame] | 703 | return !h2c->nb_cs; |
Willy Tarreau | c2ea47f | 2019-10-01 10:12:00 +0200 | [diff] [blame] | 704 | } |
| 705 | |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 706 | /* update h2c timeout if needed */ |
| 707 | static void h2c_update_timeout(struct h2c *h2c) |
| 708 | { |
Remi Tricot-Le Breton | b5d968d | 2022-04-08 18:04:18 +0200 | [diff] [blame] | 709 | int is_idle_conn = 0; |
| 710 | |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 711 | TRACE_ENTER(H2_EV_H2C_WAKE, h2c->conn); |
| 712 | |
| 713 | if (!h2c->task) |
| 714 | goto leave; |
| 715 | |
| 716 | if (h2c_may_expire(h2c)) { |
| 717 | /* no more streams attached */ |
| 718 | if (h2c->last_sid >= 0) { |
| 719 | /* GOAWAY sent, closing in progress */ |
| 720 | h2c->task->expire = tick_add_ifset(now_ms, h2c->shut_timeout); |
Remi Tricot-Le Breton | b5d968d | 2022-04-08 18:04:18 +0200 | [diff] [blame] | 721 | is_idle_conn = 1; |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 722 | } else if (br_data(h2c->mbuf)) { |
| 723 | /* pending output data: always the regular data timeout */ |
| 724 | h2c->task->expire = tick_add_ifset(now_ms, h2c->timeout); |
Willy Tarreau | 6ff91e2 | 2022-04-14 11:43:35 +0200 | [diff] [blame] | 725 | } else if (!(h2c->flags & H2_CF_IS_BACK) && h2c->max_id > 0 && !b_data(&h2c->dbuf)) { |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 726 | /* idle after having seen one stream => keep-alive */ |
Willy Tarreau | 86b08a3 | 2022-04-13 17:40:28 +0200 | [diff] [blame] | 727 | int to; |
| 728 | |
| 729 | if (tick_isset(h2c->proxy->timeout.httpka)) |
| 730 | to = h2c->proxy->timeout.httpka; |
| 731 | else |
| 732 | to = h2c->proxy->timeout.httpreq; |
| 733 | |
| 734 | h2c->task->expire = tick_add_ifset(h2c->idle_start, to); |
Remi Tricot-Le Breton | b5d968d | 2022-04-08 18:04:18 +0200 | [diff] [blame] | 735 | is_idle_conn = 1; |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 736 | } else { |
| 737 | /* before first request, or started to deserialize a |
| 738 | * new req => http-request, but only set, not refresh. |
| 739 | */ |
| 740 | int exp = (h2c->flags & H2_CF_IS_BACK) ? TICK_ETERNITY : h2c->proxy->timeout.httpreq; |
| 741 | h2c->task->expire = tick_add_ifset(h2c->idle_start, exp); |
| 742 | } |
| 743 | /* if a timeout above was not set, fall back to the default one */ |
| 744 | if (!tick_isset(h2c->task->expire)) |
| 745 | h2c->task->expire = tick_add_ifset(now_ms, h2c->timeout); |
Remi Tricot-Le Breton | b5d968d | 2022-04-08 18:04:18 +0200 | [diff] [blame] | 746 | |
| 747 | if ((h2c->proxy->flags & (PR_FL_DISABLED|PR_FL_STOPPED)) && |
| 748 | is_idle_conn && tick_isset(global.close_spread_end)) { |
| 749 | /* If a soft-stop is in progress and a close-spread-time |
| 750 | * is set, we want to spread idle connection closing roughly |
| 751 | * evenly across the defined window. This should only |
| 752 | * act on idle frontend connections. |
| 753 | * If the window end is already in the past, we wake the |
| 754 | * timeout task up immediately so that it can be closed. |
| 755 | */ |
| 756 | int remaining_window = tick_remain(now_ms, global.close_spread_end); |
| 757 | if (remaining_window) { |
| 758 | /* We don't need to reset the expire if it would |
| 759 | * already happen before the close window end. |
| 760 | */ |
| 761 | if (tick_isset(h2c->task->expire) && |
| 762 | tick_is_le(global.close_spread_end, h2c->task->expire)) { |
| 763 | /* Set an expire value shorter than the current value |
| 764 | * because the close spread window end comes earlier. |
| 765 | */ |
| 766 | h2c->task->expire = tick_add(now_ms, statistical_prng_range(remaining_window)); |
| 767 | } |
| 768 | } |
| 769 | else { |
| 770 | /* We are past the soft close window end, wake the timeout |
| 771 | * task up immediately. |
| 772 | */ |
| 773 | task_wakeup(h2c->task, TASK_WOKEN_TIMER); |
| 774 | } |
| 775 | } |
| 776 | |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 777 | } else { |
| 778 | h2c->task->expire = TICK_ETERNITY; |
| 779 | } |
| 780 | task_queue(h2c->task); |
| 781 | leave: |
| 782 | TRACE_LEAVE(H2_EV_H2C_WAKE); |
| 783 | } |
| 784 | |
Olivier Houchard | 7a97743 | 2019-03-21 15:47:13 +0100 | [diff] [blame] | 785 | static __inline int |
Willy Tarreau | c2ea47f | 2019-10-01 10:12:00 +0200 | [diff] [blame] | 786 | h2c_is_dead(const struct h2c *h2c) |
Olivier Houchard | 7a97743 | 2019-03-21 15:47:13 +0100 | [diff] [blame] | 787 | { |
| 788 | if (eb_is_empty(&h2c->streams_by_id) && /* don't close if streams exist */ |
| 789 | ((h2c->conn->flags & CO_FL_ERROR) || /* errors close immediately */ |
| 790 | (h2c->st0 >= H2_CS_ERROR && !h2c->task) || /* a timeout stroke earlier */ |
| 791 | (!(h2c->conn->owner)) || /* Nobody's left to take care of the connection, drop it now */ |
Willy Tarreau | 662fafc | 2019-05-26 09:43:07 +0200 | [diff] [blame] | 792 | (!br_data(h2c->mbuf) && /* mux buffer empty, also process clean events below */ |
Olivier Houchard | 7a97743 | 2019-03-21 15:47:13 +0100 | [diff] [blame] | 793 | (conn_xprt_read0_pending(h2c->conn) || |
| 794 | (h2c->last_sid >= 0 && h2c->max_id >= h2c->last_sid))))) |
| 795 | return 1; |
| 796 | |
| 797 | return 0; |
Olivier Houchard | 7a97743 | 2019-03-21 15:47:13 +0100 | [diff] [blame] | 798 | } |
| 799 | |
Willy Tarreau | 35dbd5d | 2017-09-22 09:13:49 +0200 | [diff] [blame] | 800 | /*****************************************************/ |
| 801 | /* functions below are for dynamic buffer management */ |
| 802 | /*****************************************************/ |
| 803 | |
Willy Tarreau | 315d807 | 2017-12-10 22:17:57 +0100 | [diff] [blame] | 804 | /* indicates whether or not the we may call the h2_recv() function to attempt |
| 805 | * to receive data into the buffer and/or demux pending data. The condition is |
| 806 | * a bit complex due to some API limits for now. The rules are the following : |
| 807 | * - if an error or a shutdown was detected on the connection and the buffer |
| 808 | * is empty, we must not attempt to receive |
| 809 | * - if the demux buf failed to be allocated, we must not try to receive and |
| 810 | * we know there is nothing pending |
Willy Tarreau | 6042aeb | 2017-12-12 11:01:44 +0100 | [diff] [blame] | 811 | * - if no flag indicates a blocking condition, we may attempt to receive, |
| 812 | * regardless of whether the demux buffer is full or not, so that only |
| 813 | * de demux part decides whether or not to block. This is needed because |
| 814 | * the connection API indeed prevents us from re-enabling receipt that is |
| 815 | * already enabled in a polled state, so we must always immediately stop |
| 816 | * as soon as the demux can't proceed so as never to hit an end of read |
| 817 | * with data pending in the buffers. |
Willy Tarreau | 315d807 | 2017-12-10 22:17:57 +0100 | [diff] [blame] | 818 | * - otherwise must may not attempt |
| 819 | */ |
| 820 | static inline int h2_recv_allowed(const struct h2c *h2c) |
| 821 | { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 822 | if (b_data(&h2c->dbuf) == 0 && |
Willy Tarreau | 315d807 | 2017-12-10 22:17:57 +0100 | [diff] [blame] | 823 | (h2c->st0 >= H2_CS_ERROR || |
| 824 | h2c->conn->flags & CO_FL_ERROR || |
| 825 | conn_xprt_read0_pending(h2c->conn))) |
| 826 | return 0; |
| 827 | |
| 828 | if (!(h2c->flags & H2_CF_DEM_DALLOC) && |
Willy Tarreau | 6042aeb | 2017-12-12 11:01:44 +0100 | [diff] [blame] | 829 | !(h2c->flags & H2_CF_DEM_BLOCK_ANY)) |
Willy Tarreau | 315d807 | 2017-12-10 22:17:57 +0100 | [diff] [blame] | 830 | return 1; |
| 831 | |
| 832 | return 0; |
| 833 | } |
| 834 | |
Willy Tarreau | 47b515a | 2018-12-21 16:09:41 +0100 | [diff] [blame] | 835 | /* restarts reading on the connection if it was not enabled */ |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 836 | static inline void h2c_restart_reading(const struct h2c *h2c, int consider_buffer) |
Willy Tarreau | 47b515a | 2018-12-21 16:09:41 +0100 | [diff] [blame] | 837 | { |
| 838 | if (!h2_recv_allowed(h2c)) |
| 839 | return; |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 840 | if ((!consider_buffer || !b_data(&h2c->dbuf)) |
| 841 | && (h2c->wait_event.events & SUB_RETRY_RECV)) |
Willy Tarreau | 47b515a | 2018-12-21 16:09:41 +0100 | [diff] [blame] | 842 | return; |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 843 | tasklet_wakeup(h2c->wait_event.tasklet); |
Willy Tarreau | 47b515a | 2018-12-21 16:09:41 +0100 | [diff] [blame] | 844 | } |
| 845 | |
| 846 | |
Willy Tarreau | fa1d357 | 2019-01-31 10:31:51 +0100 | [diff] [blame] | 847 | /* returns true if the front connection has too many conn_streams attached */ |
| 848 | static inline int h2_frt_has_too_many_cs(const struct h2c *h2c) |
Willy Tarreau | f210191 | 2018-07-19 10:11:38 +0200 | [diff] [blame] | 849 | { |
Willy Tarreau | a875466 | 2018-12-23 20:43:58 +0100 | [diff] [blame] | 850 | return h2c->nb_cs > h2_settings_max_concurrent_streams; |
Willy Tarreau | f210191 | 2018-07-19 10:11:38 +0200 | [diff] [blame] | 851 | } |
| 852 | |
Willy Tarreau | 44e973f | 2018-03-01 17:49:30 +0100 | [diff] [blame] | 853 | /* Tries to grab a buffer and to re-enable processing on mux <target>. The h2c |
| 854 | * flags are used to figure what buffer was requested. It returns 1 if the |
| 855 | * allocation succeeds, in which case the connection is woken up, or 0 if it's |
| 856 | * impossible to wake up and we prefer to be woken up later. |
Willy Tarreau | 35dbd5d | 2017-09-22 09:13:49 +0200 | [diff] [blame] | 857 | */ |
Willy Tarreau | 44e973f | 2018-03-01 17:49:30 +0100 | [diff] [blame] | 858 | static int h2_buf_available(void *target) |
Willy Tarreau | 35dbd5d | 2017-09-22 09:13:49 +0200 | [diff] [blame] | 859 | { |
| 860 | struct h2c *h2c = target; |
Willy Tarreau | 0b55907 | 2018-02-26 15:22:17 +0100 | [diff] [blame] | 861 | struct h2s *h2s; |
Willy Tarreau | 35dbd5d | 2017-09-22 09:13:49 +0200 | [diff] [blame] | 862 | |
Willy Tarreau | d68d4f1 | 2021-03-22 14:44:31 +0100 | [diff] [blame] | 863 | if ((h2c->flags & H2_CF_DEM_DALLOC) && b_alloc(&h2c->dbuf)) { |
Willy Tarreau | 1b62c5c | 2017-09-25 11:55:01 +0200 | [diff] [blame] | 864 | h2c->flags &= ~H2_CF_DEM_DALLOC; |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 865 | h2c_restart_reading(h2c, 1); |
Willy Tarreau | 35dbd5d | 2017-09-22 09:13:49 +0200 | [diff] [blame] | 866 | return 1; |
| 867 | } |
Willy Tarreau | 35dbd5d | 2017-09-22 09:13:49 +0200 | [diff] [blame] | 868 | |
Willy Tarreau | d68d4f1 | 2021-03-22 14:44:31 +0100 | [diff] [blame] | 869 | if ((h2c->flags & H2_CF_MUX_MALLOC) && b_alloc(br_tail(h2c->mbuf))) { |
Willy Tarreau | 44e973f | 2018-03-01 17:49:30 +0100 | [diff] [blame] | 870 | h2c->flags &= ~H2_CF_MUX_MALLOC; |
Willy Tarreau | 1b62c5c | 2017-09-25 11:55:01 +0200 | [diff] [blame] | 871 | |
| 872 | if (h2c->flags & H2_CF_DEM_MROOM) { |
| 873 | h2c->flags &= ~H2_CF_DEM_MROOM; |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 874 | h2c_restart_reading(h2c, 1); |
Willy Tarreau | 1b62c5c | 2017-09-25 11:55:01 +0200 | [diff] [blame] | 875 | } |
Willy Tarreau | 1439812 | 2017-09-22 14:26:04 +0200 | [diff] [blame] | 876 | return 1; |
| 877 | } |
Willy Tarreau | 0b55907 | 2018-02-26 15:22:17 +0100 | [diff] [blame] | 878 | |
| 879 | if ((h2c->flags & H2_CF_DEM_SALLOC) && |
| 880 | (h2s = h2c_st_by_id(h2c, h2c->dsi)) && h2s->cs && |
Willy Tarreau | d68d4f1 | 2021-03-22 14:44:31 +0100 | [diff] [blame] | 881 | b_alloc(&h2s->rxbuf)) { |
Willy Tarreau | 0b55907 | 2018-02-26 15:22:17 +0100 | [diff] [blame] | 882 | h2c->flags &= ~H2_CF_DEM_SALLOC; |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 883 | h2c_restart_reading(h2c, 1); |
Willy Tarreau | 0b55907 | 2018-02-26 15:22:17 +0100 | [diff] [blame] | 884 | return 1; |
| 885 | } |
| 886 | |
Willy Tarreau | 1439812 | 2017-09-22 14:26:04 +0200 | [diff] [blame] | 887 | return 0; |
| 888 | } |
| 889 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 890 | static inline struct buffer *h2_get_buf(struct h2c *h2c, struct buffer *bptr) |
Willy Tarreau | 1439812 | 2017-09-22 14:26:04 +0200 | [diff] [blame] | 891 | { |
| 892 | struct buffer *buf = NULL; |
| 893 | |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 894 | if (likely(!LIST_INLIST(&h2c->buf_wait.list)) && |
Willy Tarreau | d68d4f1 | 2021-03-22 14:44:31 +0100 | [diff] [blame] | 895 | unlikely((buf = b_alloc(bptr)) == NULL)) { |
Willy Tarreau | 44e973f | 2018-03-01 17:49:30 +0100 | [diff] [blame] | 896 | h2c->buf_wait.target = h2c; |
| 897 | h2c->buf_wait.wakeup_cb = h2_buf_available; |
Willy Tarreau | b4e3476 | 2021-09-30 19:02:18 +0200 | [diff] [blame] | 898 | LIST_APPEND(&th_ctx->buffer_wq, &h2c->buf_wait.list); |
Willy Tarreau | 1439812 | 2017-09-22 14:26:04 +0200 | [diff] [blame] | 899 | } |
| 900 | return buf; |
| 901 | } |
| 902 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 903 | static inline void h2_release_buf(struct h2c *h2c, struct buffer *bptr) |
Willy Tarreau | 1439812 | 2017-09-22 14:26:04 +0200 | [diff] [blame] | 904 | { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 905 | if (bptr->size) { |
Willy Tarreau | 44e973f | 2018-03-01 17:49:30 +0100 | [diff] [blame] | 906 | b_free(bptr); |
Willy Tarreau | 4d77bbf | 2021-02-20 12:02:46 +0100 | [diff] [blame] | 907 | offer_buffers(NULL, 1); |
Willy Tarreau | 1439812 | 2017-09-22 14:26:04 +0200 | [diff] [blame] | 908 | } |
| 909 | } |
| 910 | |
Willy Tarreau | 2e3c000 | 2019-05-26 09:45:23 +0200 | [diff] [blame] | 911 | static inline void h2_release_mbuf(struct h2c *h2c) |
| 912 | { |
| 913 | struct buffer *buf; |
| 914 | unsigned int count = 0; |
| 915 | |
| 916 | while (b_size(buf = br_head_pick(h2c->mbuf))) { |
| 917 | b_free(buf); |
| 918 | count++; |
| 919 | } |
| 920 | if (count) |
Willy Tarreau | 4d77bbf | 2021-02-20 12:02:46 +0100 | [diff] [blame] | 921 | offer_buffers(NULL, count); |
Willy Tarreau | 2e3c000 | 2019-05-26 09:45:23 +0200 | [diff] [blame] | 922 | } |
| 923 | |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 924 | /* returns the number of allocatable outgoing streams for the connection taking |
| 925 | * the last_sid and the reserved ones into account. |
| 926 | */ |
| 927 | static inline int h2_streams_left(const struct h2c *h2c) |
| 928 | { |
| 929 | int ret; |
| 930 | |
| 931 | /* consider the number of outgoing streams we're allowed to create before |
| 932 | * reaching the last GOAWAY frame seen. max_id is the last assigned id, |
| 933 | * nb_reserved is the number of streams which don't yet have an ID. |
| 934 | */ |
| 935 | ret = (h2c->last_sid >= 0) ? h2c->last_sid : 0x7FFFFFFF; |
| 936 | ret = (unsigned int)(ret - h2c->max_id) / 2 - h2c->nb_reserved - 1; |
| 937 | if (ret < 0) |
| 938 | ret = 0; |
| 939 | return ret; |
| 940 | } |
| 941 | |
Willy Tarreau | 00f18a3 | 2019-01-26 12:19:01 +0100 | [diff] [blame] | 942 | /* returns the number of streams in use on a connection to figure if it's |
| 943 | * idle or not. We check nb_cs and not nb_streams as the caller will want |
| 944 | * to know if it was the last one after a detach(). |
| 945 | */ |
| 946 | static int h2_used_streams(struct connection *conn) |
| 947 | { |
| 948 | struct h2c *h2c = conn->ctx; |
| 949 | |
| 950 | return h2c->nb_cs; |
| 951 | } |
| 952 | |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 953 | /* returns the number of concurrent streams available on the connection */ |
Olivier Houchard | d540b36 | 2018-11-05 18:37:53 +0100 | [diff] [blame] | 954 | static int h2_avail_streams(struct connection *conn) |
| 955 | { |
Willy Tarreau | e9634bd | 2019-01-23 10:25:10 +0100 | [diff] [blame] | 956 | struct server *srv = objt_server(conn->target); |
Willy Tarreau | 3d2ee55 | 2018-12-19 14:12:10 +0100 | [diff] [blame] | 957 | struct h2c *h2c = conn->ctx; |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 958 | int ret1, ret2; |
Olivier Houchard | d540b36 | 2018-11-05 18:37:53 +0100 | [diff] [blame] | 959 | |
Willy Tarreau | 6afec46 | 2019-01-28 06:40:19 +0100 | [diff] [blame] | 960 | /* RFC7540#6.8: Receivers of a GOAWAY frame MUST NOT open additional |
| 961 | * streams on the connection. |
| 962 | */ |
| 963 | if (h2c->last_sid >= 0) |
| 964 | return 0; |
| 965 | |
Willy Tarreau | c61966f | 2019-10-31 15:10:03 +0100 | [diff] [blame] | 966 | if (h2c->st0 >= H2_CS_ERROR) |
| 967 | return 0; |
| 968 | |
Willy Tarreau | 8694978 | 2019-01-31 10:42:05 +0100 | [diff] [blame] | 969 | /* note: may be negative if a SETTINGS frame changes the limit */ |
| 970 | ret1 = h2c->streams_limit - h2c->nb_streams; |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 971 | |
| 972 | /* we must also consider the limit imposed by stream IDs */ |
| 973 | ret2 = h2_streams_left(h2c); |
Willy Tarreau | e9634bd | 2019-01-23 10:25:10 +0100 | [diff] [blame] | 974 | ret1 = MIN(ret1, ret2); |
Willy Tarreau | 8694978 | 2019-01-31 10:42:05 +0100 | [diff] [blame] | 975 | if (ret1 > 0 && srv && srv->max_reuse >= 0) { |
Willy Tarreau | e9634bd | 2019-01-23 10:25:10 +0100 | [diff] [blame] | 976 | ret2 = h2c->stream_cnt <= srv->max_reuse ? srv->max_reuse - h2c->stream_cnt + 1: 0; |
| 977 | ret1 = MIN(ret1, ret2); |
| 978 | } |
| 979 | return ret1; |
Olivier Houchard | d540b36 | 2018-11-05 18:37:53 +0100 | [diff] [blame] | 980 | } |
| 981 | |
Willy Tarreau | 35dbd5d | 2017-09-22 09:13:49 +0200 | [diff] [blame] | 982 | |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 983 | /*****************************************************************/ |
| 984 | /* functions below are dedicated to the mux setup and management */ |
| 985 | /*****************************************************************/ |
| 986 | |
Willy Tarreau | 7dc24e4 | 2018-10-03 13:52:41 +0200 | [diff] [blame] | 987 | /* Initialize the mux once it's attached. For outgoing connections, the context |
| 988 | * is already initialized before installing the mux, so we detect incoming |
Christopher Faulet | 51f73eb | 2019-04-08 11:22:47 +0200 | [diff] [blame] | 989 | * connections from the fact that the context is still NULL (even during mux |
| 990 | * upgrades). <input> is always used as Input buffer and may contain data. It is |
| 991 | * the caller responsibility to not reuse it anymore. Returns < 0 on error. |
Willy Tarreau | 7dc24e4 | 2018-10-03 13:52:41 +0200 | [diff] [blame] | 992 | */ |
Christopher Faulet | 51f73eb | 2019-04-08 11:22:47 +0200 | [diff] [blame] | 993 | static int h2_init(struct connection *conn, struct proxy *prx, struct session *sess, |
| 994 | struct buffer *input) |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 995 | { |
| 996 | struct h2c *h2c; |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 997 | struct task *t = NULL; |
Christopher Faulet | f81ef03 | 2019-10-04 15:19:43 +0200 | [diff] [blame] | 998 | void *conn_ctx = conn->ctx; |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 999 | |
Christopher Faulet | f81ef03 | 2019-10-04 15:19:43 +0200 | [diff] [blame] | 1000 | TRACE_ENTER(H2_EV_H2C_NEW); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1001 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1002 | h2c = pool_alloc(pool_head_h2c); |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1003 | if (!h2c) |
mildis | cd2d7de | 2018-10-02 16:44:18 +0200 | [diff] [blame] | 1004 | goto fail_no_h2c; |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1005 | |
Christopher Faulet | e9b7072 | 2019-04-08 10:46:02 +0200 | [diff] [blame] | 1006 | if (conn_is_back(conn)) { |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1007 | h2c->flags = H2_CF_IS_BACK; |
| 1008 | h2c->shut_timeout = h2c->timeout = prx->timeout.server; |
| 1009 | if (tick_isset(prx->timeout.serverfin)) |
| 1010 | h2c->shut_timeout = prx->timeout.serverfin; |
Amaury Denoyelle | c92697d | 2020-10-27 17:16:01 +0100 | [diff] [blame] | 1011 | |
| 1012 | h2c->px_counters = EXTRA_COUNTERS_GET(prx->extra_counters_be, |
| 1013 | &h2_stats_module); |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1014 | } else { |
| 1015 | h2c->flags = H2_CF_NONE; |
| 1016 | h2c->shut_timeout = h2c->timeout = prx->timeout.client; |
| 1017 | if (tick_isset(prx->timeout.clientfin)) |
| 1018 | h2c->shut_timeout = prx->timeout.clientfin; |
Amaury Denoyelle | c92697d | 2020-10-27 17:16:01 +0100 | [diff] [blame] | 1019 | |
| 1020 | h2c->px_counters = EXTRA_COUNTERS_GET(prx->extra_counters_fe, |
| 1021 | &h2_stats_module); |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1022 | } |
Willy Tarreau | 3f13357 | 2017-10-31 19:21:06 +0100 | [diff] [blame] | 1023 | |
Willy Tarreau | 0b37d65 | 2018-10-03 10:33:02 +0200 | [diff] [blame] | 1024 | h2c->proxy = prx; |
Willy Tarreau | 3340029 | 2017-11-05 11:23:40 +0100 | [diff] [blame] | 1025 | h2c->task = NULL; |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 1026 | h2c->idle_start = now_ms; |
Willy Tarreau | 3f13357 | 2017-10-31 19:21:06 +0100 | [diff] [blame] | 1027 | if (tick_isset(h2c->timeout)) { |
Willy Tarreau | beeabf5 | 2021-10-01 18:23:30 +0200 | [diff] [blame] | 1028 | t = task_new_here(); |
Willy Tarreau | 3f13357 | 2017-10-31 19:21:06 +0100 | [diff] [blame] | 1029 | if (!t) |
| 1030 | goto fail; |
| 1031 | |
| 1032 | h2c->task = t; |
| 1033 | t->process = h2_timeout_task; |
| 1034 | t->context = h2c; |
| 1035 | t->expire = tick_add(now_ms, h2c->timeout); |
| 1036 | } |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 1037 | |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 1038 | h2c->wait_event.tasklet = tasklet_new(); |
| 1039 | if (!h2c->wait_event.tasklet) |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 1040 | goto fail; |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 1041 | h2c->wait_event.tasklet->process = h2_io_cb; |
| 1042 | h2c->wait_event.tasklet->context = h2c; |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 1043 | h2c->wait_event.events = 0; |
Amaury Denoyelle | d3a88c1 | 2021-05-03 10:47:51 +0200 | [diff] [blame] | 1044 | if (!conn_is_back(conn)) { |
| 1045 | /* Connection might already be in the stopping_list if subject |
| 1046 | * to h1->h2 upgrade. |
| 1047 | */ |
| 1048 | if (!LIST_INLIST(&conn->stopping_list)) { |
| 1049 | LIST_APPEND(&mux_stopping_data[tid].list, |
| 1050 | &conn->stopping_list); |
| 1051 | } |
| 1052 | } |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 1053 | |
Willy Tarreau | 2bdcc70 | 2020-05-19 11:31:11 +0200 | [diff] [blame] | 1054 | h2c->ddht = hpack_dht_alloc(); |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1055 | if (!h2c->ddht) |
| 1056 | goto fail; |
| 1057 | |
| 1058 | /* Initialise the context. */ |
| 1059 | h2c->st0 = H2_CS_PREFACE; |
| 1060 | h2c->conn = conn; |
Willy Tarreau | 2e2083a | 2019-01-31 10:34:07 +0100 | [diff] [blame] | 1061 | h2c->streams_limit = h2_settings_max_concurrent_streams; |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1062 | h2c->max_id = -1; |
| 1063 | h2c->errcode = H2_ERR_NO_ERROR; |
Willy Tarreau | 97aaa67 | 2018-12-23 09:49:04 +0100 | [diff] [blame] | 1064 | h2c->rcvd_c = 0; |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1065 | h2c->rcvd_s = 0; |
Willy Tarreau | 4974561 | 2017-12-03 18:56:02 +0100 | [diff] [blame] | 1066 | h2c->nb_streams = 0; |
Willy Tarreau | 7ac60e8 | 2018-07-19 09:04:05 +0200 | [diff] [blame] | 1067 | h2c->nb_cs = 0; |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 1068 | h2c->nb_reserved = 0; |
Willy Tarreau | e9634bd | 2019-01-23 10:25:10 +0100 | [diff] [blame] | 1069 | h2c->stream_cnt = 0; |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1070 | |
Christopher Faulet | 51f73eb | 2019-04-08 11:22:47 +0200 | [diff] [blame] | 1071 | h2c->dbuf = *input; |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1072 | h2c->dsi = -1; |
| 1073 | h2c->msi = -1; |
Willy Tarreau | e9634bd | 2019-01-23 10:25:10 +0100 | [diff] [blame] | 1074 | |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1075 | h2c->last_sid = -1; |
| 1076 | |
Willy Tarreau | 5133096 | 2019-05-26 09:38:07 +0200 | [diff] [blame] | 1077 | br_init(h2c->mbuf, sizeof(h2c->mbuf) / sizeof(h2c->mbuf[0])); |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1078 | h2c->miw = 65535; /* mux initial window size */ |
| 1079 | h2c->mws = 65535; /* mux window size */ |
| 1080 | h2c->mfs = 16384; /* initial max frame size */ |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1081 | h2c->streams_by_id = EB_ROOT; |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1082 | LIST_INIT(&h2c->send_list); |
| 1083 | LIST_INIT(&h2c->fctl_list); |
Willy Tarreau | 9edf6db | 2019-10-02 10:49:59 +0200 | [diff] [blame] | 1084 | LIST_INIT(&h2c->blocked_list); |
Willy Tarreau | 90f366b | 2021-02-20 11:49:49 +0100 | [diff] [blame] | 1085 | LIST_INIT(&h2c->buf_wait.list); |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1086 | |
Christopher Faulet | f81ef03 | 2019-10-04 15:19:43 +0200 | [diff] [blame] | 1087 | conn->ctx = h2c; |
| 1088 | |
Willy Tarreau | 8e6f749 | 2021-06-16 17:47:24 +0200 | [diff] [blame] | 1089 | TRACE_USER("new H2 connection", H2_EV_H2C_NEW, conn); |
| 1090 | |
Willy Tarreau | 3f13357 | 2017-10-31 19:21:06 +0100 | [diff] [blame] | 1091 | if (t) |
| 1092 | task_queue(t); |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 1093 | |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1094 | if (h2c->flags & H2_CF_IS_BACK) { |
| 1095 | /* FIXME: this is temporary, for outgoing connections we need |
| 1096 | * to immediately allocate a stream until the code is modified |
| 1097 | * so that the caller calls ->attach(). For now the outgoing cs |
Christopher Faulet | f81ef03 | 2019-10-04 15:19:43 +0200 | [diff] [blame] | 1098 | * is stored as conn->ctx by the caller and saved in conn_ctx. |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1099 | */ |
| 1100 | struct h2s *h2s; |
| 1101 | |
Christopher Faulet | f81ef03 | 2019-10-04 15:19:43 +0200 | [diff] [blame] | 1102 | h2s = h2c_bck_stream_new(h2c, conn_ctx, sess); |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1103 | if (!h2s) |
| 1104 | goto fail_stream; |
| 1105 | } |
| 1106 | |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 1107 | HA_ATOMIC_INC(&h2c->px_counters->open_conns); |
| 1108 | HA_ATOMIC_INC(&h2c->px_counters->total_conns); |
Amaury Denoyelle | 66942c1 | 2020-10-27 17:16:04 +0100 | [diff] [blame] | 1109 | |
Willy Tarreau | 0f38358 | 2018-10-03 14:22:21 +0200 | [diff] [blame] | 1110 | /* prepare to read something */ |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 1111 | h2c_restart_reading(h2c, 1); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1112 | TRACE_LEAVE(H2_EV_H2C_NEW, conn); |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1113 | return 0; |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1114 | fail_stream: |
| 1115 | hpack_dht_free(h2c->ddht); |
mildis | cd2d7de | 2018-10-02 16:44:18 +0200 | [diff] [blame] | 1116 | fail: |
Willy Tarreau | f656279 | 2019-05-07 19:05:35 +0200 | [diff] [blame] | 1117 | task_destroy(t); |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 1118 | if (h2c->wait_event.tasklet) |
| 1119 | tasklet_free(h2c->wait_event.tasklet); |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1120 | pool_free(pool_head_h2c, h2c); |
mildis | cd2d7de | 2018-10-02 16:44:18 +0200 | [diff] [blame] | 1121 | fail_no_h2c: |
Willy Tarreau | 3b990fe | 2022-01-12 17:24:26 +0100 | [diff] [blame] | 1122 | if (!conn_is_back(conn)) |
| 1123 | LIST_DEL_INIT(&conn->stopping_list); |
Christopher Faulet | f81ef03 | 2019-10-04 15:19:43 +0200 | [diff] [blame] | 1124 | conn->ctx = conn_ctx; /* restore saved ctx */ |
| 1125 | TRACE_DEVEL("leaving in error", H2_EV_H2C_NEW|H2_EV_H2C_END|H2_EV_H2C_ERR); |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1126 | return -1; |
| 1127 | } |
| 1128 | |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1129 | /* returns the next allocatable outgoing stream ID for the H2 connection, or |
| 1130 | * -1 if no more is allocatable. |
| 1131 | */ |
| 1132 | static inline int32_t h2c_get_next_sid(const struct h2c *h2c) |
| 1133 | { |
| 1134 | int32_t id = (h2c->max_id + 1) | 1; |
Willy Tarreau | a80dca8 | 2019-01-24 17:08:28 +0100 | [diff] [blame] | 1135 | |
| 1136 | if ((id & 0x80000000U) || (h2c->last_sid >= 0 && id > h2c->last_sid)) |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1137 | id = -1; |
| 1138 | return id; |
| 1139 | } |
| 1140 | |
Willy Tarreau | 2373acc | 2017-10-12 17:35:14 +0200 | [diff] [blame] | 1141 | /* returns the stream associated with id <id> or NULL if not found */ |
| 1142 | static inline struct h2s *h2c_st_by_id(struct h2c *h2c, int id) |
| 1143 | { |
| 1144 | struct eb32_node *node; |
| 1145 | |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1146 | if (id == 0) |
| 1147 | return (struct h2s *)h2_closed_stream; |
| 1148 | |
Willy Tarreau | 2a85618 | 2017-05-16 15:20:39 +0200 | [diff] [blame] | 1149 | if (id > h2c->max_id) |
| 1150 | return (struct h2s *)h2_idle_stream; |
| 1151 | |
Willy Tarreau | 2373acc | 2017-10-12 17:35:14 +0200 | [diff] [blame] | 1152 | node = eb32_lookup(&h2c->streams_by_id, id); |
| 1153 | if (!node) |
Willy Tarreau | 2a85618 | 2017-05-16 15:20:39 +0200 | [diff] [blame] | 1154 | return (struct h2s *)h2_closed_stream; |
Willy Tarreau | 2373acc | 2017-10-12 17:35:14 +0200 | [diff] [blame] | 1155 | |
| 1156 | return container_of(node, struct h2s, by_id); |
| 1157 | } |
| 1158 | |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 1159 | /* release function. This one should be called to free all resources allocated |
| 1160 | * to the mux. |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 1161 | */ |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 1162 | static void h2_release(struct h2c *h2c) |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 1163 | { |
Christopher Faulet | 4de1bff | 2022-04-14 11:36:41 +0200 | [diff] [blame] | 1164 | struct connection *conn = h2c->conn; |
Christopher Faulet | 39a96ee | 2019-04-08 10:52:21 +0200 | [diff] [blame] | 1165 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1166 | TRACE_ENTER(H2_EV_H2C_END); |
| 1167 | |
Christopher Faulet | 4de1bff | 2022-04-14 11:36:41 +0200 | [diff] [blame] | 1168 | hpack_dht_free(h2c->ddht); |
Christopher Faulet | 61840e7 | 2019-04-15 09:33:32 +0200 | [diff] [blame] | 1169 | |
Christopher Faulet | 4de1bff | 2022-04-14 11:36:41 +0200 | [diff] [blame] | 1170 | if (LIST_INLIST(&h2c->buf_wait.list)) |
| 1171 | LIST_DEL_INIT(&h2c->buf_wait.list); |
Willy Tarreau | 1439812 | 2017-09-22 14:26:04 +0200 | [diff] [blame] | 1172 | |
Christopher Faulet | 4de1bff | 2022-04-14 11:36:41 +0200 | [diff] [blame] | 1173 | h2_release_buf(h2c, &h2c->dbuf); |
| 1174 | h2_release_mbuf(h2c); |
Willy Tarreau | 1439812 | 2017-09-22 14:26:04 +0200 | [diff] [blame] | 1175 | |
Christopher Faulet | 4de1bff | 2022-04-14 11:36:41 +0200 | [diff] [blame] | 1176 | if (h2c->task) { |
| 1177 | h2c->task->context = NULL; |
| 1178 | task_wakeup(h2c->task, TASK_WOKEN_OTHER); |
| 1179 | h2c->task = NULL; |
| 1180 | } |
| 1181 | if (h2c->wait_event.tasklet) |
| 1182 | tasklet_free(h2c->wait_event.tasklet); |
| 1183 | if (conn && h2c->wait_event.events != 0) |
| 1184 | conn->xprt->unsubscribe(conn, conn->xprt_ctx, h2c->wait_event.events, |
| 1185 | &h2c->wait_event); |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 1186 | |
Christopher Faulet | 4de1bff | 2022-04-14 11:36:41 +0200 | [diff] [blame] | 1187 | HA_ATOMIC_DEC(&h2c->px_counters->open_conns); |
Amaury Denoyelle | 66942c1 | 2020-10-27 17:16:04 +0100 | [diff] [blame] | 1188 | |
Christopher Faulet | 4de1bff | 2022-04-14 11:36:41 +0200 | [diff] [blame] | 1189 | pool_free(pool_head_h2c, h2c); |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1190 | |
Christopher Faulet | 39a96ee | 2019-04-08 10:52:21 +0200 | [diff] [blame] | 1191 | if (conn) { |
Amaury Denoyelle | d3a88c1 | 2021-05-03 10:47:51 +0200 | [diff] [blame] | 1192 | if (!conn_is_back(conn)) |
| 1193 | LIST_DEL_INIT(&conn->stopping_list); |
| 1194 | |
Christopher Faulet | 39a96ee | 2019-04-08 10:52:21 +0200 | [diff] [blame] | 1195 | conn->mux = NULL; |
| 1196 | conn->ctx = NULL; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1197 | TRACE_DEVEL("freeing conn", H2_EV_H2C_END, conn); |
Willy Tarreau | 32218eb | 2017-09-22 08:07:25 +0200 | [diff] [blame] | 1198 | |
Christopher Faulet | 39a96ee | 2019-04-08 10:52:21 +0200 | [diff] [blame] | 1199 | conn_stop_tracking(conn); |
Willy Tarreau | 0b22247 | 2021-10-21 22:24:31 +0200 | [diff] [blame] | 1200 | |
| 1201 | /* there might be a GOAWAY frame still pending in the TCP |
| 1202 | * stack, and if the peer continues to send (i.e. window |
| 1203 | * updates etc), this can result in losing the GOAWAY. For |
| 1204 | * this reason we try to drain anything received in between. |
| 1205 | */ |
| 1206 | conn->flags |= CO_FL_WANT_DRAIN; |
| 1207 | |
| 1208 | conn_xprt_shutw(conn); |
| 1209 | conn_xprt_close(conn); |
| 1210 | conn_sock_shutw(conn, !conn_is_back(conn)); |
| 1211 | conn_ctrl_close(conn); |
| 1212 | |
Christopher Faulet | 39a96ee | 2019-04-08 10:52:21 +0200 | [diff] [blame] | 1213 | if (conn->destroy_cb) |
| 1214 | conn->destroy_cb(conn); |
| 1215 | conn_free(conn); |
| 1216 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1217 | |
| 1218 | TRACE_LEAVE(H2_EV_H2C_END); |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 1219 | } |
| 1220 | |
| 1221 | |
Willy Tarreau | 7168117 | 2017-10-23 14:39:06 +0200 | [diff] [blame] | 1222 | /******************************************************/ |
| 1223 | /* functions below are for the H2 protocol processing */ |
| 1224 | /******************************************************/ |
| 1225 | |
| 1226 | /* returns the stream if of stream <h2s> or 0 if <h2s> is NULL */ |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1227 | static inline __maybe_unused int h2s_id(const struct h2s *h2s) |
Willy Tarreau | 7168117 | 2017-10-23 14:39:06 +0200 | [diff] [blame] | 1228 | { |
| 1229 | return h2s ? h2s->id : 0; |
| 1230 | } |
| 1231 | |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 1232 | /* returns the sum of the stream's own window size and the mux's initial |
| 1233 | * window, which together form the stream's effective window size. |
| 1234 | */ |
| 1235 | static inline int h2s_mws(const struct h2s *h2s) |
| 1236 | { |
| 1237 | return h2s->sws + h2s->h2c->miw; |
| 1238 | } |
| 1239 | |
Willy Tarreau | 5b5e687 | 2017-09-25 16:17:25 +0200 | [diff] [blame] | 1240 | /* returns true of the mux is currently busy as seen from stream <h2s> */ |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1241 | static inline __maybe_unused int h2c_mux_busy(const struct h2c *h2c, const struct h2s *h2s) |
Willy Tarreau | 5b5e687 | 2017-09-25 16:17:25 +0200 | [diff] [blame] | 1242 | { |
| 1243 | if (h2c->msi < 0) |
| 1244 | return 0; |
| 1245 | |
| 1246 | if (h2c->msi == h2s_id(h2s)) |
| 1247 | return 0; |
| 1248 | |
| 1249 | return 1; |
| 1250 | } |
| 1251 | |
Willy Tarreau | 15dbedd | 2022-04-13 09:40:52 +0200 | [diff] [blame] | 1252 | /* marks an error on the connection. Before settings are sent, we must not send |
| 1253 | * a GOAWAY frame, and the error state will prevent h2c_send_goaway_error() |
| 1254 | * from verifying this so we set H2_CF_GOAWAY_FAILED to make sure it will not |
| 1255 | * even try. |
| 1256 | */ |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1257 | static inline __maybe_unused void h2c_error(struct h2c *h2c, enum h2_err err) |
Willy Tarreau | 741d6df | 2017-10-17 08:00:59 +0200 | [diff] [blame] | 1258 | { |
Willy Tarreau | 022e5e5 | 2020-09-10 09:33:15 +0200 | [diff] [blame] | 1259 | TRACE_POINT(H2_EV_H2C_ERR, h2c->conn, 0, 0, (void *)(long)(err)); |
Willy Tarreau | 741d6df | 2017-10-17 08:00:59 +0200 | [diff] [blame] | 1260 | h2c->errcode = err; |
Willy Tarreau | 15dbedd | 2022-04-13 09:40:52 +0200 | [diff] [blame] | 1261 | if (h2c->st0 < H2_CS_SETTINGS1) |
| 1262 | h2c->flags |= H2_CF_GOAWAY_FAILED; |
Willy Tarreau | 741d6df | 2017-10-17 08:00:59 +0200 | [diff] [blame] | 1263 | h2c->st0 = H2_CS_ERROR; |
| 1264 | } |
| 1265 | |
Willy Tarreau | 175cebb | 2019-01-24 10:02:24 +0100 | [diff] [blame] | 1266 | /* marks an error on the stream. It may also update an already closed stream |
| 1267 | * (e.g. to report an error after an RST was received). |
| 1268 | */ |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1269 | static inline __maybe_unused void h2s_error(struct h2s *h2s, enum h2_err err) |
Willy Tarreau | 2e43f08 | 2017-10-17 08:03:59 +0200 | [diff] [blame] | 1270 | { |
Willy Tarreau | 175cebb | 2019-01-24 10:02:24 +0100 | [diff] [blame] | 1271 | if (h2s->id && h2s->st != H2_SS_ERROR) { |
Willy Tarreau | 022e5e5 | 2020-09-10 09:33:15 +0200 | [diff] [blame] | 1272 | TRACE_POINT(H2_EV_H2S_ERR, h2s->h2c->conn, h2s, 0, (void *)(long)(err)); |
Willy Tarreau | 2e43f08 | 2017-10-17 08:03:59 +0200 | [diff] [blame] | 1273 | h2s->errcode = err; |
Willy Tarreau | 175cebb | 2019-01-24 10:02:24 +0100 | [diff] [blame] | 1274 | if (h2s->st < H2_SS_ERROR) |
| 1275 | h2s->st = H2_SS_ERROR; |
Willy Tarreau | ec988c7 | 2018-12-19 18:00:29 +0100 | [diff] [blame] | 1276 | if (h2s->cs) |
| 1277 | cs_set_error(h2s->cs); |
Willy Tarreau | 2e43f08 | 2017-10-17 08:03:59 +0200 | [diff] [blame] | 1278 | } |
| 1279 | } |
| 1280 | |
Willy Tarreau | 7e09445 | 2018-12-19 18:08:52 +0100 | [diff] [blame] | 1281 | /* attempt to notify the data layer of recv availability */ |
| 1282 | static void __maybe_unused h2s_notify_recv(struct h2s *h2s) |
| 1283 | { |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 1284 | if (h2s->subs && h2s->subs->events & SUB_RETRY_RECV) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1285 | TRACE_POINT(H2_EV_STRM_WAKE, h2s->h2c->conn, h2s); |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 1286 | tasklet_wakeup(h2s->subs->tasklet); |
| 1287 | h2s->subs->events &= ~SUB_RETRY_RECV; |
| 1288 | if (!h2s->subs->events) |
| 1289 | h2s->subs = NULL; |
Willy Tarreau | 7e09445 | 2018-12-19 18:08:52 +0100 | [diff] [blame] | 1290 | } |
| 1291 | } |
| 1292 | |
| 1293 | /* attempt to notify the data layer of send availability */ |
| 1294 | static void __maybe_unused h2s_notify_send(struct h2s *h2s) |
| 1295 | { |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 1296 | if (h2s->subs && h2s->subs->events & SUB_RETRY_SEND) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1297 | TRACE_POINT(H2_EV_STRM_WAKE, h2s->h2c->conn, h2s); |
Willy Tarreau | d946416 | 2020-01-10 18:25:07 +0100 | [diff] [blame] | 1298 | h2s->flags |= H2_SF_NOTIFIED; |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 1299 | tasklet_wakeup(h2s->subs->tasklet); |
| 1300 | h2s->subs->events &= ~SUB_RETRY_SEND; |
| 1301 | if (!h2s->subs->events) |
| 1302 | h2s->subs = NULL; |
Willy Tarreau | 7e09445 | 2018-12-19 18:08:52 +0100 | [diff] [blame] | 1303 | } |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 1304 | else if (h2s->flags & (H2_SF_WANT_SHUTR | H2_SF_WANT_SHUTW)) { |
| 1305 | TRACE_POINT(H2_EV_STRM_WAKE, h2s->h2c->conn, h2s); |
| 1306 | tasklet_wakeup(h2s->shut_tl); |
| 1307 | } |
Willy Tarreau | 7e09445 | 2018-12-19 18:08:52 +0100 | [diff] [blame] | 1308 | } |
| 1309 | |
Willy Tarreau | 8b2757c | 2018-12-19 17:36:48 +0100 | [diff] [blame] | 1310 | /* alerts the data layer, trying to wake it up by all means, following |
| 1311 | * this sequence : |
| 1312 | * - if the h2s' data layer is subscribed to recv, then it's woken up for recv |
| 1313 | * - if its subscribed to send, then it's woken up for send |
| 1314 | * - if it was subscribed to neither, its ->wake() callback is called |
| 1315 | * It is safe to call this function with a closed stream which doesn't have a |
| 1316 | * conn_stream anymore. |
| 1317 | */ |
| 1318 | static void __maybe_unused h2s_alert(struct h2s *h2s) |
| 1319 | { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1320 | TRACE_ENTER(H2_EV_H2S_WAKE, h2s->h2c->conn, h2s); |
| 1321 | |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 1322 | if (h2s->subs || |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 1323 | (h2s->flags & (H2_SF_WANT_SHUTR | H2_SF_WANT_SHUTW))) { |
Willy Tarreau | 8b2757c | 2018-12-19 17:36:48 +0100 | [diff] [blame] | 1324 | h2s_notify_recv(h2s); |
| 1325 | h2s_notify_send(h2s); |
| 1326 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1327 | else if (h2s->cs && h2s->cs->data_cb->wake != NULL) { |
| 1328 | TRACE_POINT(H2_EV_STRM_WAKE, h2s->h2c->conn, h2s); |
Willy Tarreau | 8b2757c | 2018-12-19 17:36:48 +0100 | [diff] [blame] | 1329 | h2s->cs->data_cb->wake(h2s->cs); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1330 | } |
| 1331 | |
| 1332 | TRACE_LEAVE(H2_EV_H2S_WAKE, h2s->h2c->conn, h2s); |
Willy Tarreau | 8b2757c | 2018-12-19 17:36:48 +0100 | [diff] [blame] | 1333 | } |
| 1334 | |
Willy Tarreau | e482074 | 2017-07-27 13:37:23 +0200 | [diff] [blame] | 1335 | /* writes the 24-bit frame size <len> at address <frame> */ |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1336 | static inline __maybe_unused void h2_set_frame_size(void *frame, uint32_t len) |
Willy Tarreau | e482074 | 2017-07-27 13:37:23 +0200 | [diff] [blame] | 1337 | { |
| 1338 | uint8_t *out = frame; |
| 1339 | |
| 1340 | *out = len >> 16; |
| 1341 | write_n16(out + 1, len); |
| 1342 | } |
| 1343 | |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1344 | /* reads <bytes> bytes from buffer <b> starting at relative offset <o> from the |
| 1345 | * current pointer, dealing with wrapping, and stores the result in <dst>. It's |
| 1346 | * the caller's responsibility to verify that there are at least <bytes> bytes |
Willy Tarreau | 9c7f2d1 | 2018-06-15 11:51:32 +0200 | [diff] [blame] | 1347 | * available in the buffer's input prior to calling this function. The buffer |
| 1348 | * is assumed not to hold any output data. |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1349 | */ |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1350 | static inline __maybe_unused void h2_get_buf_bytes(void *dst, size_t bytes, |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1351 | const struct buffer *b, int o) |
| 1352 | { |
Willy Tarreau | 591d445 | 2018-06-15 17:21:00 +0200 | [diff] [blame] | 1353 | readv_bytes(dst, bytes, b_peek(b, o), b_wrap(b) - b_peek(b, o), b_orig(b)); |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1354 | } |
| 1355 | |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1356 | static inline __maybe_unused uint16_t h2_get_n16(const struct buffer *b, int o) |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1357 | { |
Willy Tarreau | 591d445 | 2018-06-15 17:21:00 +0200 | [diff] [blame] | 1358 | return readv_n16(b_peek(b, o), b_wrap(b) - b_peek(b, o), b_orig(b)); |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1359 | } |
| 1360 | |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1361 | static inline __maybe_unused uint32_t h2_get_n32(const struct buffer *b, int o) |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1362 | { |
Willy Tarreau | 591d445 | 2018-06-15 17:21:00 +0200 | [diff] [blame] | 1363 | return readv_n32(b_peek(b, o), b_wrap(b) - b_peek(b, o), b_orig(b)); |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1364 | } |
| 1365 | |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1366 | static inline __maybe_unused uint64_t h2_get_n64(const struct buffer *b, int o) |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1367 | { |
Willy Tarreau | 591d445 | 2018-06-15 17:21:00 +0200 | [diff] [blame] | 1368 | return readv_n64(b_peek(b, o), b_wrap(b) - b_peek(b, o), b_orig(b)); |
Willy Tarreau | 54c1506 | 2017-10-10 17:10:03 +0200 | [diff] [blame] | 1369 | } |
| 1370 | |
| 1371 | |
Willy Tarreau | a4428bd | 2018-12-22 18:11:41 +0100 | [diff] [blame] | 1372 | /* Peeks an H2 frame header from offset <o> of buffer <b> into descriptor <h>. |
| 1373 | * The algorithm is not obvious. It turns out that H2 headers are neither |
| 1374 | * aligned nor do they use regular sizes. And to add to the trouble, the buffer |
| 1375 | * may wrap so each byte read must be checked. The header is formed like this : |
Willy Tarreau | 715d531 | 2017-07-11 15:20:24 +0200 | [diff] [blame] | 1376 | * |
| 1377 | * b0 b1 b2 b3 b4 b5..b8 |
| 1378 | * +----------+---------+--------+----+----+----------------------+ |
| 1379 | * |len[23:16]|len[15:8]|len[7:0]|type|flag|sid[31:0] (big endian)| |
| 1380 | * +----------+---------+--------+----+----+----------------------+ |
| 1381 | * |
| 1382 | * Here we read a big-endian 64 bit word from h[1]. This way in a single read |
| 1383 | * we get the sid properly aligned and ordered, and 16 bits of len properly |
| 1384 | * ordered as well. The type and flags can be extracted using bit shifts from |
| 1385 | * the word, and only one extra read is needed to fetch len[16:23]. |
Willy Tarreau | 9c7f2d1 | 2018-06-15 11:51:32 +0200 | [diff] [blame] | 1386 | * Returns zero if some bytes are missing, otherwise non-zero on success. The |
| 1387 | * buffer is assumed not to contain any output data. |
Willy Tarreau | 715d531 | 2017-07-11 15:20:24 +0200 | [diff] [blame] | 1388 | */ |
Willy Tarreau | a4428bd | 2018-12-22 18:11:41 +0100 | [diff] [blame] | 1389 | static __maybe_unused int h2_peek_frame_hdr(const struct buffer *b, int o, struct h2_fh *h) |
Willy Tarreau | 715d531 | 2017-07-11 15:20:24 +0200 | [diff] [blame] | 1390 | { |
| 1391 | uint64_t w; |
| 1392 | |
Willy Tarreau | a4428bd | 2018-12-22 18:11:41 +0100 | [diff] [blame] | 1393 | if (b_data(b) < o + 9) |
Willy Tarreau | 715d531 | 2017-07-11 15:20:24 +0200 | [diff] [blame] | 1394 | return 0; |
| 1395 | |
Willy Tarreau | a4428bd | 2018-12-22 18:11:41 +0100 | [diff] [blame] | 1396 | w = h2_get_n64(b, o + 1); |
| 1397 | h->len = *(uint8_t*)b_peek(b, o) << 16; |
Willy Tarreau | 715d531 | 2017-07-11 15:20:24 +0200 | [diff] [blame] | 1398 | h->sid = w & 0x7FFFFFFF; /* RFC7540#4.1: R bit must be ignored */ |
| 1399 | h->ff = w >> 32; |
| 1400 | h->ft = w >> 40; |
| 1401 | h->len += w >> 48; |
| 1402 | return 1; |
| 1403 | } |
| 1404 | |
| 1405 | /* skip the next 9 bytes corresponding to the frame header possibly parsed by |
| 1406 | * h2_peek_frame_hdr() above. |
| 1407 | */ |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1408 | static inline __maybe_unused void h2_skip_frame_hdr(struct buffer *b) |
Willy Tarreau | 715d531 | 2017-07-11 15:20:24 +0200 | [diff] [blame] | 1409 | { |
Willy Tarreau | e5f12ce | 2018-06-15 10:28:05 +0200 | [diff] [blame] | 1410 | b_del(b, 9); |
Willy Tarreau | 715d531 | 2017-07-11 15:20:24 +0200 | [diff] [blame] | 1411 | } |
| 1412 | |
| 1413 | /* same as above, automatically advances the buffer on success */ |
Willy Tarreau | 1f09467 | 2017-11-20 21:27:45 +0100 | [diff] [blame] | 1414 | static inline __maybe_unused int h2_get_frame_hdr(struct buffer *b, struct h2_fh *h) |
Willy Tarreau | 715d531 | 2017-07-11 15:20:24 +0200 | [diff] [blame] | 1415 | { |
| 1416 | int ret; |
| 1417 | |
Willy Tarreau | a4428bd | 2018-12-22 18:11:41 +0100 | [diff] [blame] | 1418 | ret = h2_peek_frame_hdr(b, 0, h); |
Willy Tarreau | 715d531 | 2017-07-11 15:20:24 +0200 | [diff] [blame] | 1419 | if (ret > 0) |
| 1420 | h2_skip_frame_hdr(b); |
| 1421 | return ret; |
| 1422 | } |
| 1423 | |
Willy Tarreau | cb985a4 | 2019-10-07 16:56:34 +0200 | [diff] [blame] | 1424 | |
| 1425 | /* try to fragment the headers frame present at the beginning of buffer <b>, |
| 1426 | * enforcing a limit of <mfs> bytes per frame. Returns 0 on failure, 1 on |
| 1427 | * success. Typical causes of failure include a buffer not large enough to |
| 1428 | * add extra frame headers. The existing frame size is read in the current |
| 1429 | * frame. Its EH flag will be cleared if CONTINUATION frames need to be added, |
| 1430 | * and its length will be adjusted. The stream ID for continuation frames will |
| 1431 | * be copied from the initial frame's. |
| 1432 | */ |
| 1433 | static int h2_fragment_headers(struct buffer *b, uint32_t mfs) |
| 1434 | { |
| 1435 | size_t remain = b->data - 9; |
| 1436 | int extra_frames = (remain - 1) / mfs; |
| 1437 | size_t fsize; |
| 1438 | char *fptr; |
| 1439 | int frame; |
| 1440 | |
| 1441 | if (b->data <= mfs + 9) |
| 1442 | return 1; |
| 1443 | |
| 1444 | /* Too large a frame, we need to fragment it using CONTINUATION |
| 1445 | * frames. We start from the end and move tails as needed. |
| 1446 | */ |
| 1447 | if (b->data + extra_frames * 9 > b->size) |
| 1448 | return 0; |
| 1449 | |
| 1450 | for (frame = extra_frames; frame; frame--) { |
| 1451 | fsize = ((remain - 1) % mfs) + 1; |
| 1452 | remain -= fsize; |
| 1453 | |
| 1454 | /* move data */ |
| 1455 | fptr = b->area + 9 + remain + (frame - 1) * 9; |
| 1456 | memmove(fptr + 9, b->area + 9 + remain, fsize); |
| 1457 | b->data += 9; |
| 1458 | |
| 1459 | /* write new frame header */ |
| 1460 | h2_set_frame_size(fptr, fsize); |
| 1461 | fptr[3] = H2_FT_CONTINUATION; |
| 1462 | fptr[4] = (frame == extra_frames) ? H2_F_HEADERS_END_HEADERS : 0; |
| 1463 | write_n32(fptr + 5, read_n32(b->area + 5)); |
| 1464 | } |
| 1465 | |
| 1466 | b->area[4] &= ~H2_F_HEADERS_END_HEADERS; |
| 1467 | h2_set_frame_size(b->area, remain); |
| 1468 | return 1; |
| 1469 | } |
| 1470 | |
| 1471 | |
Willy Tarreau | 00dd078 | 2018-03-01 16:31:34 +0100 | [diff] [blame] | 1472 | /* marks stream <h2s> as CLOSED and decrement the number of active streams for |
| 1473 | * its connection if the stream was not yet closed. Please use this exclusively |
| 1474 | * before closing a stream to ensure stream count is well maintained. |
Willy Tarreau | 91bfdd7 | 2017-12-14 12:00:14 +0100 | [diff] [blame] | 1475 | */ |
Willy Tarreau | 00dd078 | 2018-03-01 16:31:34 +0100 | [diff] [blame] | 1476 | static inline void h2s_close(struct h2s *h2s) |
Willy Tarreau | 91bfdd7 | 2017-12-14 12:00:14 +0100 | [diff] [blame] | 1477 | { |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 1478 | if (h2s->st != H2_SS_CLOSED) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1479 | TRACE_ENTER(H2_EV_H2S_END, h2s->h2c->conn, h2s); |
Willy Tarreau | 91bfdd7 | 2017-12-14 12:00:14 +0100 | [diff] [blame] | 1480 | h2s->h2c->nb_streams--; |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 1481 | if (!h2s->id) |
| 1482 | h2s->h2c->nb_reserved--; |
Willy Tarreau | a27db38 | 2019-03-25 18:13:16 +0100 | [diff] [blame] | 1483 | if (h2s->cs) { |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 1484 | if (!(h2s->endp->flags & CS_EP_EOS) && !b_data(&h2s->rxbuf)) |
Willy Tarreau | a27db38 | 2019-03-25 18:13:16 +0100 | [diff] [blame] | 1485 | h2s_notify_recv(h2s); |
| 1486 | } |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 1487 | HA_ATOMIC_DEC(&h2s->h2c->px_counters->open_streams); |
Amaury Denoyelle | 66942c1 | 2020-10-27 17:16:04 +0100 | [diff] [blame] | 1488 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1489 | TRACE_LEAVE(H2_EV_H2S_END, h2s->h2c->conn, h2s); |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 1490 | } |
Willy Tarreau | 91bfdd7 | 2017-12-14 12:00:14 +0100 | [diff] [blame] | 1491 | h2s->st = H2_SS_CLOSED; |
| 1492 | } |
| 1493 | |
Willy Tarreau | 71049cc | 2018-03-28 13:56:39 +0200 | [diff] [blame] | 1494 | /* detaches an H2 stream from its H2C and releases it to the H2S pool. */ |
Olivier Houchard | 5a3671d | 2019-10-11 16:33:49 +0200 | [diff] [blame] | 1495 | /* h2s_destroy should only ever be called by the thread that owns the stream, |
| 1496 | * that means that a tasklet should be used if we want to destroy the h2s |
| 1497 | * from another thread |
| 1498 | */ |
Willy Tarreau | 71049cc | 2018-03-28 13:56:39 +0200 | [diff] [blame] | 1499 | static void h2s_destroy(struct h2s *h2s) |
Willy Tarreau | 0a10de6 | 2018-03-01 16:27:53 +0100 | [diff] [blame] | 1500 | { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1501 | struct connection *conn = h2s->h2c->conn; |
| 1502 | |
| 1503 | TRACE_ENTER(H2_EV_H2S_END, conn, h2s); |
| 1504 | |
Willy Tarreau | 0a10de6 | 2018-03-01 16:27:53 +0100 | [diff] [blame] | 1505 | h2s_close(h2s); |
| 1506 | eb32_delete(&h2s->by_id); |
Olivier Houchard | 638b799 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 1507 | if (b_size(&h2s->rxbuf)) { |
| 1508 | b_free(&h2s->rxbuf); |
Willy Tarreau | 4d77bbf | 2021-02-20 12:02:46 +0100 | [diff] [blame] | 1509 | offer_buffers(NULL, 1); |
Olivier Houchard | 638b799 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 1510 | } |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 1511 | |
| 1512 | if (h2s->subs) |
| 1513 | h2s->subs->events = 0; |
| 1514 | |
Joseph Herlant | d77575d | 2018-11-25 10:54:45 -0800 | [diff] [blame] | 1515 | /* There's no need to explicitly call unsubscribe here, the only |
Olivier Houchard | fa8aa86 | 2018-10-10 18:25:41 +0200 | [diff] [blame] | 1516 | * reference left would be in the h2c send_list/fctl_list, and if |
| 1517 | * we're in it, we're getting out anyway |
| 1518 | */ |
Olivier Houchard | d360ac6 | 2019-03-22 17:37:16 +0100 | [diff] [blame] | 1519 | LIST_DEL_INIT(&h2s->list); |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 1520 | |
Olivier Houchard | 5a3671d | 2019-10-11 16:33:49 +0200 | [diff] [blame] | 1521 | /* ditto, calling tasklet_free() here should be ok */ |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 1522 | tasklet_free(h2s->shut_tl); |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 1523 | BUG_ON(h2s->endp && !(h2s->endp->flags & CS_EP_ORPHAN)); |
| 1524 | cs_endpoint_free(h2s->endp); |
Willy Tarreau | 0a10de6 | 2018-03-01 16:27:53 +0100 | [diff] [blame] | 1525 | pool_free(pool_head_h2s, h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1526 | |
| 1527 | TRACE_LEAVE(H2_EV_H2S_END, conn); |
Willy Tarreau | 0a10de6 | 2018-03-01 16:27:53 +0100 | [diff] [blame] | 1528 | } |
| 1529 | |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1530 | /* allocates a new stream <id> for connection <h2c> and adds it into h2c's |
| 1531 | * stream tree. In case of error, nothing is added and NULL is returned. The |
| 1532 | * causes of errors can be any failed memory allocation. The caller is |
| 1533 | * responsible for checking if the connection may support an extra stream |
| 1534 | * prior to calling this function. |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1535 | */ |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1536 | static struct h2s *h2s_new(struct h2c *h2c, int id) |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1537 | { |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1538 | struct h2s *h2s; |
| 1539 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1540 | TRACE_ENTER(H2_EV_H2S_NEW, h2c->conn); |
| 1541 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1542 | h2s = pool_alloc(pool_head_h2s); |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1543 | if (!h2s) |
| 1544 | goto out; |
| 1545 | |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 1546 | h2s->shut_tl = tasklet_new(); |
| 1547 | if (!h2s->shut_tl) { |
Olivier Houchard | fa8aa86 | 2018-10-10 18:25:41 +0200 | [diff] [blame] | 1548 | pool_free(pool_head_h2s, h2s); |
| 1549 | goto out; |
| 1550 | } |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 1551 | h2s->subs = NULL; |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 1552 | h2s->shut_tl->process = h2_deferred_shut; |
| 1553 | h2s->shut_tl->context = h2s; |
Olivier Houchard | fa8aa86 | 2018-10-10 18:25:41 +0200 | [diff] [blame] | 1554 | LIST_INIT(&h2s->list); |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1555 | h2s->h2c = h2c; |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1556 | h2s->cs = NULL; |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 1557 | h2s->endp = NULL; |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 1558 | h2s->sws = 0; |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1559 | h2s->flags = H2_SF_NONE; |
| 1560 | h2s->errcode = H2_ERR_NO_ERROR; |
| 1561 | h2s->st = H2_SS_IDLE; |
Willy Tarreau | 9c5e22e | 2018-09-11 19:22:14 +0200 | [diff] [blame] | 1562 | h2s->status = 0; |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 1563 | h2s->body_len = 0; |
Olivier Houchard | 638b799 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 1564 | h2s->rxbuf = BUF_NULL; |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 1565 | memset(h2s->upgrade_protocol, 0, sizeof(h2s->upgrade_protocol)); |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1566 | |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1567 | h2s->by_id.key = h2s->id = id; |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1568 | if (id > 0) |
| 1569 | h2c->max_id = id; |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 1570 | else |
| 1571 | h2c->nb_reserved++; |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1572 | |
| 1573 | eb32_insert(&h2c->streams_by_id, &h2s->by_id); |
Willy Tarreau | 4974561 | 2017-12-03 18:56:02 +0100 | [diff] [blame] | 1574 | h2c->nb_streams++; |
Willy Tarreau | e9634bd | 2019-01-23 10:25:10 +0100 | [diff] [blame] | 1575 | h2c->stream_cnt++; |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1576 | |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 1577 | HA_ATOMIC_INC(&h2c->px_counters->open_streams); |
| 1578 | HA_ATOMIC_INC(&h2c->px_counters->total_streams); |
Amaury Denoyelle | 66942c1 | 2020-10-27 17:16:04 +0100 | [diff] [blame] | 1579 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1580 | TRACE_LEAVE(H2_EV_H2S_NEW, h2c->conn, h2s); |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1581 | return h2s; |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1582 | out: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1583 | TRACE_DEVEL("leaving in error", H2_EV_H2S_ERR|H2_EV_H2S_END, h2c->conn); |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1584 | return NULL; |
| 1585 | } |
| 1586 | |
| 1587 | /* creates a new stream <id> on the h2c connection and returns it, or NULL in |
Christopher Faulet | 7d013e7 | 2020-12-15 16:56:50 +0100 | [diff] [blame] | 1588 | * case of memory allocation error. <input> is used as input buffer for the new |
| 1589 | * stream. On success, it is transferred to the stream and the mux is no longer |
| 1590 | * responsible of it. On error, <input> is unchanged, thus the mux must still |
| 1591 | * take care of it. |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1592 | */ |
Amaury Denoyelle | 90ac605 | 2021-10-18 14:45:49 +0200 | [diff] [blame] | 1593 | static struct h2s *h2c_frt_stream_new(struct h2c *h2c, int id, struct buffer *input, uint32_t flags) |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1594 | { |
| 1595 | struct session *sess = h2c->conn->owner; |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1596 | struct h2s *h2s; |
| 1597 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1598 | TRACE_ENTER(H2_EV_H2S_NEW, h2c->conn); |
| 1599 | |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 1600 | if (h2c->nb_streams >= h2_settings_max_concurrent_streams) |
| 1601 | goto out; |
| 1602 | |
| 1603 | h2s = h2s_new(h2c, id); |
| 1604 | if (!h2s) |
| 1605 | goto out; |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1606 | |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 1607 | h2s->endp = cs_endpoint_new(); |
| 1608 | if (!h2s->endp) |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1609 | goto out_close; |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 1610 | h2s->endp->target = h2s; |
| 1611 | h2s->endp->ctx = h2c->conn; |
| 1612 | h2s->endp->flags |= (CS_EP_T_MUX|CS_EP_ORPHAN|CS_EP_NOT_FIRST); |
| 1613 | |
Amaury Denoyelle | 90ac605 | 2021-10-18 14:45:49 +0200 | [diff] [blame] | 1614 | /* FIXME wrong analogy between ext-connect and websocket, this need to |
| 1615 | * be refine. |
| 1616 | */ |
| 1617 | if (flags & H2_SF_EXT_CONNECT_RCVD) |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 1618 | h2s->endp->flags |= CS_EP_WEBSOCKET; |
Christopher Faulet | b669d68 | 2022-03-22 18:37:19 +0100 | [diff] [blame] | 1619 | |
Willy Tarreau | d0de677 | 2022-02-04 09:05:37 +0100 | [diff] [blame] | 1620 | /* The stream will record the request's accept date (which is either the |
| 1621 | * end of the connection's or the date immediately after the previous |
| 1622 | * request) and the idle time, which is the delay since the previous |
| 1623 | * request. We can set the value now, it will be copied by stream_new(). |
| 1624 | */ |
| 1625 | sess->t_idle = tv_ms_elapsed(&sess->tv_accept, &now) - sess->t_handshake; |
Christopher Faulet | a9e8b39 | 2022-03-23 11:01:09 +0100 | [diff] [blame] | 1626 | |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 1627 | h2s->cs = cs_new_from_mux(h2s->endp, sess, input); |
Christopher Faulet | a9e8b39 | 2022-03-23 11:01:09 +0100 | [diff] [blame] | 1628 | if (!h2s->cs) { |
Christopher Faulet | a9e8b39 | 2022-03-23 11:01:09 +0100 | [diff] [blame] | 1629 | goto out_close; |
| 1630 | } |
| 1631 | h2c->nb_cs++; |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1632 | |
Willy Tarreau | 590a051 | 2018-09-05 11:56:48 +0200 | [diff] [blame] | 1633 | /* We want the accept date presented to the next stream to be the one |
| 1634 | * we have now, the handshake time to be null (since the next stream |
| 1635 | * is not delayed by a handshake), and the idle time to count since |
| 1636 | * right now. |
| 1637 | */ |
| 1638 | sess->accept_date = date; |
| 1639 | sess->tv_accept = now; |
| 1640 | sess->t_handshake = 0; |
Willy Tarreau | d0de677 | 2022-02-04 09:05:37 +0100 | [diff] [blame] | 1641 | sess->t_idle = 0; |
Willy Tarreau | 590a051 | 2018-09-05 11:56:48 +0200 | [diff] [blame] | 1642 | |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1643 | /* OK done, the stream lives its own life now */ |
Willy Tarreau | fa1d357 | 2019-01-31 10:31:51 +0100 | [diff] [blame] | 1644 | if (h2_frt_has_too_many_cs(h2c)) |
Willy Tarreau | f210191 | 2018-07-19 10:11:38 +0200 | [diff] [blame] | 1645 | h2c->flags |= H2_CF_DEM_TOOMANY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1646 | TRACE_LEAVE(H2_EV_H2S_NEW, h2c->conn); |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1647 | return h2s; |
| 1648 | |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1649 | out_close: |
Willy Tarreau | 71049cc | 2018-03-28 13:56:39 +0200 | [diff] [blame] | 1650 | h2s_destroy(h2s); |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1651 | out: |
Willy Tarreau | 45efc07 | 2018-10-03 18:27:52 +0200 | [diff] [blame] | 1652 | sess_log(sess); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1653 | TRACE_LEAVE(H2_EV_H2S_NEW|H2_EV_H2S_ERR|H2_EV_H2S_END, h2c->conn); |
Willy Tarreau | 45efc07 | 2018-10-03 18:27:52 +0200 | [diff] [blame] | 1654 | return NULL; |
Willy Tarreau | 3ccf4b2 | 2017-10-13 19:07:26 +0200 | [diff] [blame] | 1655 | } |
| 1656 | |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1657 | /* allocates a new stream associated to conn_stream <cs> on the h2c connection |
| 1658 | * and returns it, or NULL in case of memory allocation error or if the highest |
| 1659 | * possible stream ID was reached. |
| 1660 | */ |
Olivier Houchard | f502aca | 2018-12-14 19:42:40 +0100 | [diff] [blame] | 1661 | static struct h2s *h2c_bck_stream_new(struct h2c *h2c, struct conn_stream *cs, struct session *sess) |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1662 | { |
| 1663 | struct h2s *h2s = NULL; |
| 1664 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1665 | TRACE_ENTER(H2_EV_H2S_NEW, h2c->conn); |
| 1666 | |
Willy Tarreau | 8694978 | 2019-01-31 10:42:05 +0100 | [diff] [blame] | 1667 | if (h2c->nb_streams >= h2c->streams_limit) |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1668 | goto out; |
| 1669 | |
Willy Tarreau | a80dca8 | 2019-01-24 17:08:28 +0100 | [diff] [blame] | 1670 | if (h2_streams_left(h2c) < 1) |
| 1671 | goto out; |
| 1672 | |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1673 | /* Defer choosing the ID until we send the first message to create the stream */ |
| 1674 | h2s = h2s_new(h2c, 0); |
| 1675 | if (!h2s) |
| 1676 | goto out; |
| 1677 | |
Christopher Faulet | 070b91b | 2022-03-31 19:27:18 +0200 | [diff] [blame] | 1678 | if (cs_attach_mux(cs, h2s, h2c->conn) < 0) { |
| 1679 | h2s_destroy(h2s); |
| 1680 | h2s = NULL; |
| 1681 | goto out; |
| 1682 | } |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1683 | h2s->cs = cs; |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 1684 | h2s->endp = cs->endp; |
Olivier Houchard | f502aca | 2018-12-14 19:42:40 +0100 | [diff] [blame] | 1685 | h2s->sess = sess; |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1686 | h2c->nb_cs++; |
| 1687 | |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1688 | out: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1689 | if (likely(h2s)) |
| 1690 | TRACE_LEAVE(H2_EV_H2S_NEW, h2c->conn, h2s); |
| 1691 | else |
| 1692 | TRACE_LEAVE(H2_EV_H2S_NEW|H2_EV_H2S_ERR|H2_EV_H2S_END, h2c->conn, h2s); |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 1693 | return h2s; |
| 1694 | } |
| 1695 | |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1696 | /* try to send a settings frame on the connection. Returns > 0 on success, 0 if |
| 1697 | * it couldn't do anything. It may return an error in h2c. See RFC7540#11.3 for |
| 1698 | * the various settings codes. |
| 1699 | */ |
Willy Tarreau | 7f0cc49 | 2018-10-08 07:13:08 +0200 | [diff] [blame] | 1700 | static int h2c_send_settings(struct h2c *h2c) |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1701 | { |
| 1702 | struct buffer *res; |
| 1703 | char buf_data[100]; // enough for 15 settings |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 1704 | struct buffer buf; |
Willy Tarreau | a24b35c | 2019-02-21 13:24:36 +0100 | [diff] [blame] | 1705 | int mfs; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1706 | int ret = 0; |
| 1707 | |
| 1708 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_SETTINGS, h2c->conn); |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1709 | |
| 1710 | if (h2c_mux_busy(h2c, NULL)) { |
| 1711 | h2c->flags |= H2_CF_DEM_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1712 | goto out; |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1713 | } |
| 1714 | |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1715 | chunk_init(&buf, buf_data, sizeof(buf_data)); |
| 1716 | chunk_memcpy(&buf, |
| 1717 | "\x00\x00\x00" /* length : 0 for now */ |
| 1718 | "\x04\x00" /* type : 4 (settings), flags : 0 */ |
| 1719 | "\x00\x00\x00\x00", /* stream ID : 0 */ |
| 1720 | 9); |
| 1721 | |
Willy Tarreau | 0bbad6b | 2019-02-26 16:01:52 +0100 | [diff] [blame] | 1722 | if (h2c->flags & H2_CF_IS_BACK) { |
| 1723 | /* send settings_enable_push=0 */ |
| 1724 | chunk_memcat(&buf, "\x00\x02\x00\x00\x00\x00", 6); |
| 1725 | } |
| 1726 | |
Amaury Denoyelle | befeae8 | 2021-07-09 17:14:30 +0200 | [diff] [blame] | 1727 | /* rfc 8441 #3 SETTINGS_ENABLE_CONNECT_PROTOCOL=1, |
| 1728 | * sent automatically unless disabled in the global config */ |
| 1729 | if (!(global.tune.options & GTUNE_DISABLE_H2_WEBSOCKET)) |
| 1730 | chunk_memcat(&buf, "\x00\x08\x00\x00\x00\x01", 6); |
Amaury Denoyelle | f9dcbee | 2020-12-11 17:53:10 +0100 | [diff] [blame] | 1731 | |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1732 | if (h2_settings_header_table_size != 4096) { |
| 1733 | char str[6] = "\x00\x01"; /* header_table_size */ |
| 1734 | |
| 1735 | write_n32(str + 2, h2_settings_header_table_size); |
| 1736 | chunk_memcat(&buf, str, 6); |
| 1737 | } |
| 1738 | |
| 1739 | if (h2_settings_initial_window_size != 65535) { |
| 1740 | char str[6] = "\x00\x04"; /* initial_window_size */ |
| 1741 | |
| 1742 | write_n32(str + 2, h2_settings_initial_window_size); |
| 1743 | chunk_memcat(&buf, str, 6); |
| 1744 | } |
| 1745 | |
| 1746 | if (h2_settings_max_concurrent_streams != 0) { |
| 1747 | char str[6] = "\x00\x03"; /* max_concurrent_streams */ |
| 1748 | |
| 1749 | /* Note: 0 means "unlimited" for haproxy's config but not for |
| 1750 | * the protocol, so never send this value! |
| 1751 | */ |
| 1752 | write_n32(str + 2, h2_settings_max_concurrent_streams); |
| 1753 | chunk_memcat(&buf, str, 6); |
| 1754 | } |
| 1755 | |
Willy Tarreau | a24b35c | 2019-02-21 13:24:36 +0100 | [diff] [blame] | 1756 | mfs = h2_settings_max_frame_size; |
| 1757 | if (mfs > global.tune.bufsize) |
| 1758 | mfs = global.tune.bufsize; |
| 1759 | |
| 1760 | if (!mfs) |
| 1761 | mfs = global.tune.bufsize; |
| 1762 | |
| 1763 | if (mfs != 16384) { |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1764 | char str[6] = "\x00\x05"; /* max_frame_size */ |
| 1765 | |
| 1766 | /* note: similarly we could also emit MAX_HEADER_LIST_SIZE to |
| 1767 | * match bufsize - rewrite size, but at the moment it seems |
| 1768 | * that clients don't take care of it. |
| 1769 | */ |
Willy Tarreau | a24b35c | 2019-02-21 13:24:36 +0100 | [diff] [blame] | 1770 | write_n32(str + 2, mfs); |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1771 | chunk_memcat(&buf, str, 6); |
| 1772 | } |
| 1773 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1774 | h2_set_frame_size(buf.area, buf.data - 9); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1775 | |
| 1776 | res = br_tail(h2c->mbuf); |
| 1777 | retry: |
| 1778 | if (!h2_get_buf(h2c, res)) { |
| 1779 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 1780 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1781 | goto out; |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1782 | } |
| 1783 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1784 | ret = b_istput(res, ist2(buf.area, buf.data)); |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1785 | if (unlikely(ret <= 0)) { |
| 1786 | if (!ret) { |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1787 | if ((res = br_tail_add(h2c->mbuf)) != NULL) |
| 1788 | goto retry; |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1789 | h2c->flags |= H2_CF_MUX_MFULL; |
| 1790 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1791 | } |
| 1792 | else { |
| 1793 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1794 | ret = 0; |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1795 | } |
| 1796 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1797 | out: |
| 1798 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_SETTINGS, h2c->conn); |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1799 | return ret; |
| 1800 | } |
| 1801 | |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 1802 | /* Try to receive a connection preface, then upon success try to send our |
| 1803 | * preface which is a SETTINGS frame. Returns > 0 on success or zero on |
| 1804 | * missing data. It may return an error in h2c. |
| 1805 | */ |
| 1806 | static int h2c_frt_recv_preface(struct h2c *h2c) |
| 1807 | { |
| 1808 | int ret1; |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1809 | int ret2; |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 1810 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1811 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_PREFACE, h2c->conn); |
| 1812 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1813 | ret1 = b_isteq(&h2c->dbuf, 0, b_data(&h2c->dbuf), ist(H2_CONN_PREFACE)); |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 1814 | |
| 1815 | if (unlikely(ret1 <= 0)) { |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 1816 | if (!ret1) |
| 1817 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 1818 | if (ret1 < 0 || conn_xprt_read0_pending(h2c->conn)) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 1819 | TRACE_ERROR("I/O error or short read", H2_EV_RX_FRAME|H2_EV_RX_PREFACE, h2c->conn); |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 1820 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | ee4684f | 2021-06-17 08:08:48 +0200 | [diff] [blame] | 1821 | if (b_data(&h2c->dbuf) || |
| 1822 | !(((const struct session *)h2c->conn->owner)->fe->options & PR_O_IGNORE_PRB)) |
| 1823 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 1824 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1825 | ret2 = 0; |
| 1826 | goto out; |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 1827 | } |
| 1828 | |
Willy Tarreau | 7f0cc49 | 2018-10-08 07:13:08 +0200 | [diff] [blame] | 1829 | ret2 = h2c_send_settings(h2c); |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1830 | if (ret2 > 0) |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1831 | b_del(&h2c->dbuf, ret1); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1832 | out: |
| 1833 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_PREFACE, h2c->conn); |
Willy Tarreau | be5b715 | 2017-09-25 16:25:39 +0200 | [diff] [blame] | 1834 | return ret2; |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 1835 | } |
| 1836 | |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1837 | /* Try to send a connection preface, then upon success try to send our |
| 1838 | * preface which is a SETTINGS frame. Returns > 0 on success or zero on |
| 1839 | * missing data. It may return an error in h2c. |
| 1840 | */ |
| 1841 | static int h2c_bck_send_preface(struct h2c *h2c) |
| 1842 | { |
| 1843 | struct buffer *res; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1844 | int ret = 0; |
| 1845 | |
| 1846 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_PREFACE, h2c->conn); |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1847 | |
| 1848 | if (h2c_mux_busy(h2c, NULL)) { |
| 1849 | h2c->flags |= H2_CF_DEM_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1850 | goto out; |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1851 | } |
| 1852 | |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 1853 | res = br_tail(h2c->mbuf); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1854 | retry: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 1855 | if (!h2_get_buf(h2c, res)) { |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1856 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 1857 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1858 | goto out; |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1859 | } |
| 1860 | |
| 1861 | if (!b_data(res)) { |
| 1862 | /* preface not yet sent */ |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1863 | ret = b_istput(res, ist(H2_CONN_PREFACE)); |
| 1864 | if (unlikely(ret <= 0)) { |
| 1865 | if (!ret) { |
| 1866 | if ((res = br_tail_add(h2c->mbuf)) != NULL) |
| 1867 | goto retry; |
| 1868 | h2c->flags |= H2_CF_MUX_MFULL; |
| 1869 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1870 | goto out; |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1871 | } |
| 1872 | else { |
| 1873 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1874 | ret = 0; |
| 1875 | goto out; |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1876 | } |
| 1877 | } |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1878 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1879 | ret = h2c_send_settings(h2c); |
| 1880 | out: |
| 1881 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_PREFACE, h2c->conn); |
| 1882 | return ret; |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 1883 | } |
| 1884 | |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1885 | /* try to send a GOAWAY frame on the connection to report an error or a graceful |
| 1886 | * shutdown, with h2c->errcode as the error code. Returns > 0 on success or zero |
| 1887 | * if nothing was done. It uses h2c->last_sid as the advertised ID, or copies it |
| 1888 | * from h2c->max_id if it's not set yet (<0). In case of lack of room to write |
| 1889 | * the message, it subscribes the requester (either <h2s> or <h2c>) to future |
| 1890 | * notifications. It sets H2_CF_GOAWAY_SENT on success, and H2_CF_GOAWAY_FAILED |
| 1891 | * on unrecoverable failure. It will not attempt to send one again in this last |
Willy Tarreau | 15dbedd | 2022-04-13 09:40:52 +0200 | [diff] [blame] | 1892 | * case, nor will it send one if settings were not sent (e.g. still waiting for |
| 1893 | * a preface) so that it is safe to use h2c_error() to report such errors. |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1894 | */ |
| 1895 | static int h2c_send_goaway_error(struct h2c *h2c, struct h2s *h2s) |
| 1896 | { |
| 1897 | struct buffer *res; |
| 1898 | char str[17]; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1899 | int ret = 0; |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1900 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1901 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_GOAWAY, h2c->conn); |
| 1902 | |
Willy Tarreau | 15dbedd | 2022-04-13 09:40:52 +0200 | [diff] [blame] | 1903 | if ((h2c->flags & H2_CF_GOAWAY_FAILED) || h2c->st0 < H2_CS_SETTINGS1) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1904 | ret = 1; // claim that it worked |
| 1905 | goto out; |
| 1906 | } |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1907 | |
| 1908 | if (h2c_mux_busy(h2c, h2s)) { |
| 1909 | if (h2s) |
| 1910 | h2s->flags |= H2_SF_BLK_MBUSY; |
| 1911 | else |
| 1912 | h2c->flags |= H2_CF_DEM_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1913 | goto out; |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1914 | } |
| 1915 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1916 | /* len: 8, type: 7, flags: none, sid: 0 */ |
| 1917 | memcpy(str, "\x00\x00\x08\x07\x00\x00\x00\x00\x00", 9); |
| 1918 | |
| 1919 | if (h2c->last_sid < 0) |
| 1920 | h2c->last_sid = h2c->max_id; |
| 1921 | |
| 1922 | write_n32(str + 9, h2c->last_sid); |
| 1923 | write_n32(str + 13, h2c->errcode); |
| 1924 | |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 1925 | res = br_tail(h2c->mbuf); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1926 | retry: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 1927 | if (!h2_get_buf(h2c, res)) { |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1928 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 1929 | if (h2s) |
| 1930 | h2s->flags |= H2_SF_BLK_MROOM; |
| 1931 | else |
| 1932 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1933 | goto out; |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1934 | } |
| 1935 | |
Willy Tarreau | ea1b06d | 2018-07-12 09:02:47 +0200 | [diff] [blame] | 1936 | ret = b_istput(res, ist2(str, 17)); |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1937 | if (unlikely(ret <= 0)) { |
| 1938 | if (!ret) { |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 1939 | if ((res = br_tail_add(h2c->mbuf)) != NULL) |
| 1940 | goto retry; |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1941 | h2c->flags |= H2_CF_MUX_MFULL; |
| 1942 | if (h2s) |
| 1943 | h2s->flags |= H2_SF_BLK_MROOM; |
| 1944 | else |
| 1945 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1946 | goto out; |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1947 | } |
| 1948 | else { |
| 1949 | /* we cannot report this error using GOAWAY, so we mark |
| 1950 | * it and claim a success. |
| 1951 | */ |
| 1952 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
| 1953 | h2c->flags |= H2_CF_GOAWAY_FAILED; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1954 | ret = 1; |
| 1955 | goto out; |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1956 | } |
| 1957 | } |
| 1958 | h2c->flags |= H2_CF_GOAWAY_SENT; |
Willy Tarreau | f965b2a | 2020-12-01 10:47:18 +0100 | [diff] [blame] | 1959 | |
| 1960 | /* some codes are not for real errors, just attempts to close cleanly */ |
| 1961 | switch (h2c->errcode) { |
| 1962 | case H2_ERR_NO_ERROR: |
| 1963 | case H2_ERR_ENHANCE_YOUR_CALM: |
| 1964 | case H2_ERR_REFUSED_STREAM: |
| 1965 | case H2_ERR_CANCEL: |
| 1966 | break; |
| 1967 | default: |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 1968 | HA_ATOMIC_INC(&h2c->px_counters->goaway_resp); |
Willy Tarreau | f965b2a | 2020-12-01 10:47:18 +0100 | [diff] [blame] | 1969 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1970 | out: |
| 1971 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_GOAWAY, h2c->conn); |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 1972 | return ret; |
| 1973 | } |
| 1974 | |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 1975 | /* Try to send an RST_STREAM frame on the connection for the indicated stream |
| 1976 | * during mux operations. This stream must be valid and cannot be closed |
| 1977 | * already. h2s->id will be used for the stream ID and h2s->errcode will be |
| 1978 | * used for the error code. h2s->st will be update to H2_SS_CLOSED if it was |
| 1979 | * not yet. |
| 1980 | * |
| 1981 | * Returns > 0 on success or zero if nothing was done. In case of lack of room |
| 1982 | * to write the message, it subscribes the stream to future notifications. |
| 1983 | */ |
| 1984 | static int h2s_send_rst_stream(struct h2c *h2c, struct h2s *h2s) |
| 1985 | { |
| 1986 | struct buffer *res; |
| 1987 | char str[13]; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1988 | int ret = 0; |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 1989 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 1990 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_RST, h2c->conn, h2s); |
| 1991 | |
| 1992 | if (!h2s || h2s->st == H2_SS_CLOSED) { |
| 1993 | ret = 1; |
| 1994 | goto out; |
| 1995 | } |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 1996 | |
Willy Tarreau | 8adae7c | 2018-03-22 17:37:05 +0100 | [diff] [blame] | 1997 | /* RFC7540#5.4.2: To avoid looping, an endpoint MUST NOT send a |
| 1998 | * RST_STREAM in response to a RST_STREAM frame. |
| 1999 | */ |
Willy Tarreau | 231f616 | 2019-08-06 10:01:40 +0200 | [diff] [blame] | 2000 | if (h2c->dsi == h2s->id && h2c->dft == H2_FT_RST_STREAM) { |
Willy Tarreau | 8adae7c | 2018-03-22 17:37:05 +0100 | [diff] [blame] | 2001 | ret = 1; |
| 2002 | goto ignore; |
| 2003 | } |
| 2004 | |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2005 | if (h2c_mux_busy(h2c, h2s)) { |
| 2006 | h2s->flags |= H2_SF_BLK_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2007 | goto out; |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2008 | } |
| 2009 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2010 | /* len: 4, type: 3, flags: none */ |
| 2011 | memcpy(str, "\x00\x00\x04\x03\x00", 5); |
| 2012 | write_n32(str + 5, h2s->id); |
| 2013 | write_n32(str + 9, h2s->errcode); |
| 2014 | |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2015 | res = br_tail(h2c->mbuf); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2016 | retry: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2017 | if (!h2_get_buf(h2c, res)) { |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2018 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 2019 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2020 | goto out; |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2021 | } |
| 2022 | |
Willy Tarreau | ea1b06d | 2018-07-12 09:02:47 +0200 | [diff] [blame] | 2023 | ret = b_istput(res, ist2(str, 13)); |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2024 | if (unlikely(ret <= 0)) { |
| 2025 | if (!ret) { |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2026 | if ((res = br_tail_add(h2c->mbuf)) != NULL) |
| 2027 | goto retry; |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2028 | h2c->flags |= H2_CF_MUX_MFULL; |
| 2029 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2030 | goto out; |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2031 | } |
| 2032 | else { |
| 2033 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2034 | ret = 0; |
| 2035 | goto out; |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2036 | } |
| 2037 | } |
| 2038 | |
Willy Tarreau | 8adae7c | 2018-03-22 17:37:05 +0100 | [diff] [blame] | 2039 | ignore: |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2040 | h2s->flags |= H2_SF_RST_SENT; |
Willy Tarreau | 00dd078 | 2018-03-01 16:31:34 +0100 | [diff] [blame] | 2041 | h2s_close(h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2042 | out: |
| 2043 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_RST, h2c->conn, h2s); |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2044 | return ret; |
| 2045 | } |
| 2046 | |
| 2047 | /* Try to send an RST_STREAM frame on the connection for the stream being |
| 2048 | * demuxed using h2c->dsi for the stream ID. It will use h2s->errcode as the |
Willy Tarreau | e6888ff | 2018-12-23 18:26:26 +0100 | [diff] [blame] | 2049 | * error code, even if the stream is one of the dummy ones, and will update |
| 2050 | * h2s->st to H2_SS_CLOSED if it was not yet. |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2051 | * |
| 2052 | * Returns > 0 on success or zero if nothing was done. In case of lack of room |
| 2053 | * to write the message, it blocks the demuxer and subscribes it to future |
Joseph Herlant | d77575d | 2018-11-25 10:54:45 -0800 | [diff] [blame] | 2054 | * notifications. It's worth mentioning that an RST may even be sent for a |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2055 | * closed stream. |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2056 | */ |
| 2057 | static int h2c_send_rst_stream(struct h2c *h2c, struct h2s *h2s) |
| 2058 | { |
| 2059 | struct buffer *res; |
| 2060 | char str[13]; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2061 | int ret = 0; |
| 2062 | |
| 2063 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_RST, h2c->conn, h2s); |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2064 | |
Willy Tarreau | 8adae7c | 2018-03-22 17:37:05 +0100 | [diff] [blame] | 2065 | /* RFC7540#5.4.2: To avoid looping, an endpoint MUST NOT send a |
| 2066 | * RST_STREAM in response to a RST_STREAM frame. |
| 2067 | */ |
| 2068 | if (h2c->dft == H2_FT_RST_STREAM) { |
| 2069 | ret = 1; |
| 2070 | goto ignore; |
| 2071 | } |
| 2072 | |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2073 | if (h2c_mux_busy(h2c, h2s)) { |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2074 | h2c->flags |= H2_CF_DEM_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2075 | goto out; |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2076 | } |
| 2077 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2078 | /* len: 4, type: 3, flags: none */ |
| 2079 | memcpy(str, "\x00\x00\x04\x03\x00", 5); |
| 2080 | |
| 2081 | write_n32(str + 5, h2c->dsi); |
| 2082 | write_n32(str + 9, h2s->errcode); |
| 2083 | |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2084 | res = br_tail(h2c->mbuf); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2085 | retry: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2086 | if (!h2_get_buf(h2c, res)) { |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2087 | h2c->flags |= H2_CF_MUX_MALLOC; |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2088 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2089 | goto out; |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2090 | } |
| 2091 | |
Willy Tarreau | ea1b06d | 2018-07-12 09:02:47 +0200 | [diff] [blame] | 2092 | ret = b_istput(res, ist2(str, 13)); |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2093 | if (unlikely(ret <= 0)) { |
| 2094 | if (!ret) { |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2095 | if ((res = br_tail_add(h2c->mbuf)) != NULL) |
| 2096 | goto retry; |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2097 | h2c->flags |= H2_CF_MUX_MFULL; |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2098 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2099 | goto out; |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2100 | } |
| 2101 | else { |
| 2102 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2103 | ret = 0; |
| 2104 | goto out; |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2105 | } |
| 2106 | } |
| 2107 | |
Willy Tarreau | 8adae7c | 2018-03-22 17:37:05 +0100 | [diff] [blame] | 2108 | ignore: |
Willy Tarreau | ab0e1da | 2018-10-05 10:16:37 +0200 | [diff] [blame] | 2109 | if (h2s->id) { |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2110 | h2s->flags |= H2_SF_RST_SENT; |
Willy Tarreau | 00dd078 | 2018-03-01 16:31:34 +0100 | [diff] [blame] | 2111 | h2s_close(h2s); |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 2112 | } |
| 2113 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2114 | out: |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2115 | HA_ATOMIC_INC(&h2c->px_counters->rst_stream_resp); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2116 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_RST, h2c->conn, h2s); |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 2117 | return ret; |
| 2118 | } |
| 2119 | |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 2120 | /* try to send an empty DATA frame with the ES flag set to notify about the |
| 2121 | * end of stream and match a shutdown(write). If an ES was already sent as |
| 2122 | * indicated by HLOC/ERROR/RESET/CLOSED states, nothing is done. Returns > 0 |
| 2123 | * on success or zero if nothing was done. In case of lack of room to write the |
| 2124 | * message, it subscribes the requesting stream to future notifications. |
| 2125 | */ |
| 2126 | static int h2_send_empty_data_es(struct h2s *h2s) |
| 2127 | { |
| 2128 | struct h2c *h2c = h2s->h2c; |
| 2129 | struct buffer *res; |
| 2130 | char str[9]; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2131 | int ret = 0; |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 2132 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2133 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_DATA|H2_EV_TX_EOI, h2c->conn, h2s); |
| 2134 | |
| 2135 | if (h2s->st == H2_SS_HLOC || h2s->st == H2_SS_ERROR || h2s->st == H2_SS_CLOSED) { |
| 2136 | ret = 1; |
| 2137 | goto out; |
| 2138 | } |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 2139 | |
| 2140 | if (h2c_mux_busy(h2c, h2s)) { |
| 2141 | h2s->flags |= H2_SF_BLK_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2142 | goto out; |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 2143 | } |
| 2144 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2145 | /* len: 0x000000, type: 0(DATA), flags: ES=1 */ |
| 2146 | memcpy(str, "\x00\x00\x00\x00\x01", 5); |
| 2147 | write_n32(str + 5, h2s->id); |
| 2148 | |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2149 | res = br_tail(h2c->mbuf); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2150 | retry: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2151 | if (!h2_get_buf(h2c, res)) { |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 2152 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 2153 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2154 | goto out; |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 2155 | } |
| 2156 | |
Willy Tarreau | ea1b06d | 2018-07-12 09:02:47 +0200 | [diff] [blame] | 2157 | ret = b_istput(res, ist2(str, 9)); |
Willy Tarreau | 6d8b682 | 2017-11-07 14:39:09 +0100 | [diff] [blame] | 2158 | if (likely(ret > 0)) { |
| 2159 | h2s->flags |= H2_SF_ES_SENT; |
| 2160 | } |
| 2161 | else if (!ret) { |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2162 | if ((res = br_tail_add(h2c->mbuf)) != NULL) |
| 2163 | goto retry; |
Willy Tarreau | 6d8b682 | 2017-11-07 14:39:09 +0100 | [diff] [blame] | 2164 | h2c->flags |= H2_CF_MUX_MFULL; |
| 2165 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 6d8b682 | 2017-11-07 14:39:09 +0100 | [diff] [blame] | 2166 | } |
| 2167 | else { |
| 2168 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2169 | ret = 0; |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 2170 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2171 | out: |
| 2172 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_DATA|H2_EV_TX_EOI, h2c->conn, h2s); |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 2173 | return ret; |
| 2174 | } |
| 2175 | |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 2176 | /* wake a specific stream and assign its conn_stream some CS_EP_* flags among |
| 2177 | * CS_EP_ERR_PENDING and CS_EP_ERROR if needed. The stream's state |
Willy Tarreau | 13b6c2e | 2019-05-07 17:26:05 +0200 | [diff] [blame] | 2178 | * is automatically updated accordingly. If the stream is orphaned, it is |
| 2179 | * destroyed. |
Christopher Faulet | f02ca00 | 2019-03-07 16:21:34 +0100 | [diff] [blame] | 2180 | */ |
Willy Tarreau | 13b6c2e | 2019-05-07 17:26:05 +0200 | [diff] [blame] | 2181 | static void h2s_wake_one_stream(struct h2s *h2s) |
Christopher Faulet | f02ca00 | 2019-03-07 16:21:34 +0100 | [diff] [blame] | 2182 | { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2183 | struct h2c *h2c = h2s->h2c; |
| 2184 | |
| 2185 | TRACE_ENTER(H2_EV_H2S_WAKE, h2c->conn, h2s); |
| 2186 | |
Christopher Faulet | f02ca00 | 2019-03-07 16:21:34 +0100 | [diff] [blame] | 2187 | if (!h2s->cs) { |
| 2188 | /* this stream was already orphaned */ |
| 2189 | h2s_destroy(h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2190 | TRACE_DEVEL("leaving with no h2s", H2_EV_H2S_WAKE, h2c->conn); |
Christopher Faulet | f02ca00 | 2019-03-07 16:21:34 +0100 | [diff] [blame] | 2191 | return; |
| 2192 | } |
| 2193 | |
Christopher Faulet | aade4ed | 2020-10-08 15:38:41 +0200 | [diff] [blame] | 2194 | if (h2c_read0_pending(h2s->h2c)) { |
Willy Tarreau | aebbe5e | 2019-05-07 17:48:59 +0200 | [diff] [blame] | 2195 | if (h2s->st == H2_SS_OPEN) |
| 2196 | h2s->st = H2_SS_HREM; |
| 2197 | else if (h2s->st == H2_SS_HLOC) |
| 2198 | h2s_close(h2s); |
| 2199 | } |
Willy Tarreau | 13b6c2e | 2019-05-07 17:26:05 +0200 | [diff] [blame] | 2200 | |
Willy Tarreau | aebbe5e | 2019-05-07 17:48:59 +0200 | [diff] [blame] | 2201 | if ((h2s->h2c->st0 >= H2_CS_ERROR || h2s->h2c->conn->flags & CO_FL_ERROR) || |
| 2202 | (h2s->h2c->last_sid > 0 && (!h2s->id || h2s->id > h2s->h2c->last_sid))) { |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 2203 | h2s->endp->flags |= CS_EP_ERR_PENDING; |
| 2204 | if (h2s->endp->flags & CS_EP_EOS) |
| 2205 | h2s->endp->flags |= CS_EP_ERROR; |
Willy Tarreau | 2348291 | 2019-05-07 15:23:14 +0200 | [diff] [blame] | 2206 | |
Willy Tarreau | aebbe5e | 2019-05-07 17:48:59 +0200 | [diff] [blame] | 2207 | if (h2s->st < H2_SS_ERROR) |
| 2208 | h2s->st = H2_SS_ERROR; |
| 2209 | } |
Christopher Faulet | f02ca00 | 2019-03-07 16:21:34 +0100 | [diff] [blame] | 2210 | |
| 2211 | h2s_alert(h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2212 | TRACE_LEAVE(H2_EV_H2S_WAKE, h2c->conn); |
Christopher Faulet | f02ca00 | 2019-03-07 16:21:34 +0100 | [diff] [blame] | 2213 | } |
| 2214 | |
| 2215 | /* wake the streams attached to the connection, whose id is greater than <last> |
| 2216 | * or unassigned. |
Willy Tarreau | 23b92aa | 2017-10-30 00:26:54 +0100 | [diff] [blame] | 2217 | */ |
Willy Tarreau | 2348291 | 2019-05-07 15:23:14 +0200 | [diff] [blame] | 2218 | static void h2_wake_some_streams(struct h2c *h2c, int last) |
Willy Tarreau | 23b92aa | 2017-10-30 00:26:54 +0100 | [diff] [blame] | 2219 | { |
| 2220 | struct eb32_node *node; |
| 2221 | struct h2s *h2s; |
Willy Tarreau | 23b92aa | 2017-10-30 00:26:54 +0100 | [diff] [blame] | 2222 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2223 | TRACE_ENTER(H2_EV_H2S_WAKE, h2c->conn); |
| 2224 | |
Christopher Faulet | f02ca00 | 2019-03-07 16:21:34 +0100 | [diff] [blame] | 2225 | /* Wake all streams with ID > last */ |
Willy Tarreau | 23b92aa | 2017-10-30 00:26:54 +0100 | [diff] [blame] | 2226 | node = eb32_lookup_ge(&h2c->streams_by_id, last + 1); |
| 2227 | while (node) { |
| 2228 | h2s = container_of(node, struct h2s, by_id); |
Willy Tarreau | 23b92aa | 2017-10-30 00:26:54 +0100 | [diff] [blame] | 2229 | node = eb32_next(node); |
Willy Tarreau | 13b6c2e | 2019-05-07 17:26:05 +0200 | [diff] [blame] | 2230 | h2s_wake_one_stream(h2s); |
Christopher Faulet | f02ca00 | 2019-03-07 16:21:34 +0100 | [diff] [blame] | 2231 | } |
Willy Tarreau | 22cf59b | 2017-11-10 11:42:33 +0100 | [diff] [blame] | 2232 | |
Christopher Faulet | f02ca00 | 2019-03-07 16:21:34 +0100 | [diff] [blame] | 2233 | /* Wake all streams with unassigned ID (ID == 0) */ |
| 2234 | node = eb32_lookup(&h2c->streams_by_id, 0); |
| 2235 | while (node) { |
| 2236 | h2s = container_of(node, struct h2s, by_id); |
| 2237 | if (h2s->id > 0) |
| 2238 | break; |
| 2239 | node = eb32_next(node); |
Willy Tarreau | 13b6c2e | 2019-05-07 17:26:05 +0200 | [diff] [blame] | 2240 | h2s_wake_one_stream(h2s); |
Willy Tarreau | 23b92aa | 2017-10-30 00:26:54 +0100 | [diff] [blame] | 2241 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2242 | |
| 2243 | TRACE_LEAVE(H2_EV_H2S_WAKE, h2c->conn); |
Willy Tarreau | 23b92aa | 2017-10-30 00:26:54 +0100 | [diff] [blame] | 2244 | } |
| 2245 | |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 2246 | /* Wake up all blocked streams whose window size has become positive after the |
| 2247 | * mux's initial window was adjusted. This should be done after having processed |
| 2248 | * SETTINGS frames which have updated the mux's initial window size. |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2249 | */ |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 2250 | static void h2c_unblock_sfctl(struct h2c *h2c) |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2251 | { |
| 2252 | struct h2s *h2s; |
| 2253 | struct eb32_node *node; |
| 2254 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2255 | TRACE_ENTER(H2_EV_H2C_WAKE, h2c->conn); |
| 2256 | |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2257 | node = eb32_first(&h2c->streams_by_id); |
| 2258 | while (node) { |
| 2259 | h2s = container_of(node, struct h2s, by_id); |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 2260 | if (h2s->flags & H2_SF_BLK_SFCTL && h2s_mws(h2s) > 0) { |
Willy Tarreau | b1c9edc | 2019-01-30 16:11:20 +0100 | [diff] [blame] | 2261 | h2s->flags &= ~H2_SF_BLK_SFCTL; |
Willy Tarreau | 9edf6db | 2019-10-02 10:49:59 +0200 | [diff] [blame] | 2262 | LIST_DEL_INIT(&h2s->list); |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 2263 | if ((h2s->subs && h2s->subs->events & SUB_RETRY_SEND) || |
| 2264 | h2s->flags & (H2_SF_WANT_SHUTR|H2_SF_WANT_SHUTW)) |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 2265 | LIST_APPEND(&h2c->send_list, &h2s->list); |
Willy Tarreau | b1c9edc | 2019-01-30 16:11:20 +0100 | [diff] [blame] | 2266 | } |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2267 | node = eb32_next(node); |
| 2268 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2269 | |
| 2270 | TRACE_LEAVE(H2_EV_H2C_WAKE, h2c->conn); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2271 | } |
| 2272 | |
| 2273 | /* processes a SETTINGS frame whose payload is <payload> for <plen> bytes, and |
| 2274 | * ACKs it if needed. Returns > 0 on success or zero on missing data. It may |
Willy Tarreau | b860c73 | 2019-01-30 15:39:55 +0100 | [diff] [blame] | 2275 | * return an error in h2c. The caller must have already verified frame length |
| 2276 | * and stream ID validity. Described in RFC7540#6.5. |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2277 | */ |
| 2278 | static int h2c_handle_settings(struct h2c *h2c) |
| 2279 | { |
| 2280 | unsigned int offset; |
| 2281 | int error; |
| 2282 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2283 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_SETTINGS, h2c->conn); |
| 2284 | |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2285 | if (h2c->dff & H2_F_SETTINGS_ACK) { |
| 2286 | if (h2c->dfl) { |
| 2287 | error = H2_ERR_FRAME_SIZE_ERROR; |
| 2288 | goto fail; |
| 2289 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2290 | goto done; |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2291 | } |
| 2292 | |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2293 | /* process full frame only */ |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2294 | if (b_data(&h2c->dbuf) < h2c->dfl) { |
| 2295 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2296 | goto out0; |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2297 | } |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2298 | |
| 2299 | /* parse the frame */ |
| 2300 | for (offset = 0; offset < h2c->dfl; offset += 6) { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2301 | uint16_t type = h2_get_n16(&h2c->dbuf, offset); |
| 2302 | int32_t arg = h2_get_n32(&h2c->dbuf, offset + 2); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2303 | |
| 2304 | switch (type) { |
| 2305 | case H2_SETTINGS_INITIAL_WINDOW_SIZE: |
| 2306 | /* we need to update all existing streams with the |
| 2307 | * difference from the previous iws. |
| 2308 | */ |
| 2309 | if (arg < 0) { // RFC7540#6.5.2 |
| 2310 | error = H2_ERR_FLOW_CONTROL_ERROR; |
| 2311 | goto fail; |
| 2312 | } |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2313 | h2c->miw = arg; |
| 2314 | break; |
| 2315 | case H2_SETTINGS_MAX_FRAME_SIZE: |
| 2316 | if (arg < 16384 || arg > 16777215) { // RFC7540#6.5.2 |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 2317 | TRACE_ERROR("MAX_FRAME_SIZE out of range", H2_EV_RX_FRAME|H2_EV_RX_SETTINGS, h2c->conn); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2318 | error = H2_ERR_PROTOCOL_ERROR; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2319 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2320 | goto fail; |
| 2321 | } |
| 2322 | h2c->mfs = arg; |
| 2323 | break; |
Willy Tarreau | 39a0a1e | 2022-01-13 16:00:12 +0100 | [diff] [blame] | 2324 | case H2_SETTINGS_HEADER_TABLE_SIZE: |
| 2325 | h2c->flags |= H2_CF_SHTS_UPDATED; |
| 2326 | break; |
Willy Tarreau | 1b38b46 | 2017-12-03 19:02:28 +0100 | [diff] [blame] | 2327 | case H2_SETTINGS_ENABLE_PUSH: |
| 2328 | if (arg < 0 || arg > 1) { // RFC7540#6.5.2 |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 2329 | TRACE_ERROR("ENABLE_PUSH out of range", H2_EV_RX_FRAME|H2_EV_RX_SETTINGS, h2c->conn); |
Willy Tarreau | 1b38b46 | 2017-12-03 19:02:28 +0100 | [diff] [blame] | 2330 | error = H2_ERR_PROTOCOL_ERROR; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2331 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | 1b38b46 | 2017-12-03 19:02:28 +0100 | [diff] [blame] | 2332 | goto fail; |
| 2333 | } |
| 2334 | break; |
Willy Tarreau | 2e2083a | 2019-01-31 10:34:07 +0100 | [diff] [blame] | 2335 | case H2_SETTINGS_MAX_CONCURRENT_STREAMS: |
| 2336 | if (h2c->flags & H2_CF_IS_BACK) { |
| 2337 | /* the limit is only for the backend; for the frontend it is our limit */ |
| 2338 | if ((unsigned int)arg > h2_settings_max_concurrent_streams) |
| 2339 | arg = h2_settings_max_concurrent_streams; |
| 2340 | h2c->streams_limit = arg; |
| 2341 | } |
| 2342 | break; |
Amaury Denoyelle | f9dcbee | 2020-12-11 17:53:10 +0100 | [diff] [blame] | 2343 | case H2_SETTINGS_ENABLE_CONNECT_PROTOCOL: |
Amaury Denoyelle | 0df0436 | 2021-10-18 09:43:29 +0200 | [diff] [blame] | 2344 | if (arg == 1) |
| 2345 | h2c->flags |= H2_CF_RCVD_RFC8441; |
Amaury Denoyelle | f9dcbee | 2020-12-11 17:53:10 +0100 | [diff] [blame] | 2346 | break; |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2347 | } |
| 2348 | } |
| 2349 | |
| 2350 | /* need to ACK this frame now */ |
| 2351 | h2c->st0 = H2_CS_FRAME_A; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2352 | done: |
| 2353 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_SETTINGS, h2c->conn); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2354 | return 1; |
| 2355 | fail: |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 2356 | if (!(h2c->flags & H2_CF_IS_BACK)) |
| 2357 | sess_log(h2c->conn->owner); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2358 | h2c_error(h2c, error); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2359 | out0: |
| 2360 | TRACE_DEVEL("leaving with missing data or error", H2_EV_RX_FRAME|H2_EV_RX_SETTINGS, h2c->conn); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2361 | return 0; |
| 2362 | } |
| 2363 | |
| 2364 | /* try to send an ACK for a settings frame on the connection. Returns > 0 on |
| 2365 | * success or one of the h2_status values. |
| 2366 | */ |
| 2367 | static int h2c_ack_settings(struct h2c *h2c) |
| 2368 | { |
| 2369 | struct buffer *res; |
| 2370 | char str[9]; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2371 | int ret = 0; |
| 2372 | |
| 2373 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_SETTINGS, h2c->conn); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2374 | |
| 2375 | if (h2c_mux_busy(h2c, NULL)) { |
| 2376 | h2c->flags |= H2_CF_DEM_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2377 | goto out; |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2378 | } |
| 2379 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2380 | memcpy(str, |
| 2381 | "\x00\x00\x00" /* length : 0 (no data) */ |
| 2382 | "\x04" "\x01" /* type : 4, flags : ACK */ |
| 2383 | "\x00\x00\x00\x00" /* stream ID */, 9); |
| 2384 | |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2385 | res = br_tail(h2c->mbuf); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2386 | retry: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2387 | if (!h2_get_buf(h2c, res)) { |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2388 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 2389 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2390 | goto out; |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2391 | } |
| 2392 | |
Willy Tarreau | ea1b06d | 2018-07-12 09:02:47 +0200 | [diff] [blame] | 2393 | ret = b_istput(res, ist2(str, 9)); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2394 | if (unlikely(ret <= 0)) { |
| 2395 | if (!ret) { |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2396 | if ((res = br_tail_add(h2c->mbuf)) != NULL) |
| 2397 | goto retry; |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2398 | h2c->flags |= H2_CF_MUX_MFULL; |
| 2399 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2400 | } |
| 2401 | else { |
| 2402 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2403 | ret = 0; |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2404 | } |
| 2405 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2406 | out: |
| 2407 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_SETTINGS, h2c->conn); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 2408 | return ret; |
| 2409 | } |
| 2410 | |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2411 | /* processes a PING frame and schedules an ACK if needed. The caller must pass |
| 2412 | * the pointer to the payload in <payload>. Returns > 0 on success or zero on |
Willy Tarreau | b860c73 | 2019-01-30 15:39:55 +0100 | [diff] [blame] | 2413 | * missing data. The caller must have already verified frame length |
| 2414 | * and stream ID validity. |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2415 | */ |
| 2416 | static int h2c_handle_ping(struct h2c *h2c) |
| 2417 | { |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2418 | /* schedule a response */ |
Willy Tarreau | 68ed641 | 2017-12-03 18:15:56 +0100 | [diff] [blame] | 2419 | if (!(h2c->dff & H2_F_PING_ACK)) |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2420 | h2c->st0 = H2_CS_FRAME_A; |
| 2421 | return 1; |
| 2422 | } |
| 2423 | |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2424 | /* Try to send a window update for stream id <sid> and value <increment>. |
| 2425 | * Returns > 0 on success or zero on missing room or failure. It may return an |
| 2426 | * error in h2c. |
| 2427 | */ |
| 2428 | static int h2c_send_window_update(struct h2c *h2c, int sid, uint32_t increment) |
| 2429 | { |
| 2430 | struct buffer *res; |
| 2431 | char str[13]; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2432 | int ret = 0; |
| 2433 | |
| 2434 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_WU, h2c->conn); |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2435 | |
| 2436 | if (h2c_mux_busy(h2c, NULL)) { |
| 2437 | h2c->flags |= H2_CF_DEM_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2438 | goto out; |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2439 | } |
| 2440 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2441 | /* length: 4, type: 8, flags: none */ |
| 2442 | memcpy(str, "\x00\x00\x04\x08\x00", 5); |
| 2443 | write_n32(str + 5, sid); |
| 2444 | write_n32(str + 9, increment); |
| 2445 | |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2446 | res = br_tail(h2c->mbuf); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2447 | retry: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 2448 | if (!h2_get_buf(h2c, res)) { |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2449 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 2450 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2451 | goto out; |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2452 | } |
| 2453 | |
Willy Tarreau | ea1b06d | 2018-07-12 09:02:47 +0200 | [diff] [blame] | 2454 | ret = b_istput(res, ist2(str, 13)); |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2455 | if (unlikely(ret <= 0)) { |
| 2456 | if (!ret) { |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2457 | if ((res = br_tail_add(h2c->mbuf)) != NULL) |
| 2458 | goto retry; |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2459 | h2c->flags |= H2_CF_MUX_MFULL; |
| 2460 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2461 | } |
| 2462 | else { |
| 2463 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2464 | ret = 0; |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2465 | } |
| 2466 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2467 | out: |
| 2468 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_WU, h2c->conn); |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2469 | return ret; |
| 2470 | } |
| 2471 | |
| 2472 | /* try to send pending window update for the connection. It's safe to call it |
| 2473 | * with no pending updates. Returns > 0 on success or zero on missing room or |
| 2474 | * failure. It may return an error in h2c. |
| 2475 | */ |
| 2476 | static int h2c_send_conn_wu(struct h2c *h2c) |
| 2477 | { |
| 2478 | int ret = 1; |
| 2479 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2480 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_WU, h2c->conn); |
| 2481 | |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2482 | if (h2c->rcvd_c <= 0) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2483 | goto out; |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2484 | |
Willy Tarreau | 97aaa67 | 2018-12-23 09:49:04 +0100 | [diff] [blame] | 2485 | if (!(h2c->flags & H2_CF_WINDOW_OPENED)) { |
| 2486 | /* increase the advertised connection window to 2G on |
| 2487 | * first update. |
| 2488 | */ |
| 2489 | h2c->flags |= H2_CF_WINDOW_OPENED; |
| 2490 | h2c->rcvd_c += H2_INITIAL_WINDOW_INCREMENT; |
| 2491 | } |
| 2492 | |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2493 | /* send WU for the connection */ |
| 2494 | ret = h2c_send_window_update(h2c, 0, h2c->rcvd_c); |
| 2495 | if (ret > 0) |
| 2496 | h2c->rcvd_c = 0; |
| 2497 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2498 | out: |
| 2499 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_WU, h2c->conn); |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2500 | return ret; |
| 2501 | } |
| 2502 | |
| 2503 | /* try to send pending window update for the current dmux stream. It's safe to |
| 2504 | * call it with no pending updates. Returns > 0 on success or zero on missing |
| 2505 | * room or failure. It may return an error in h2c. |
| 2506 | */ |
| 2507 | static int h2c_send_strm_wu(struct h2c *h2c) |
| 2508 | { |
| 2509 | int ret = 1; |
| 2510 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2511 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_WU, h2c->conn); |
| 2512 | |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2513 | if (h2c->rcvd_s <= 0) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2514 | goto out; |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2515 | |
| 2516 | /* send WU for the stream */ |
| 2517 | ret = h2c_send_window_update(h2c, h2c->dsi, h2c->rcvd_s); |
| 2518 | if (ret > 0) |
| 2519 | h2c->rcvd_s = 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2520 | out: |
| 2521 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_WU, h2c->conn); |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 2522 | return ret; |
| 2523 | } |
| 2524 | |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2525 | /* try to send an ACK for a ping frame on the connection. Returns > 0 on |
| 2526 | * success, 0 on missing data or one of the h2_status values. |
| 2527 | */ |
| 2528 | static int h2c_ack_ping(struct h2c *h2c) |
| 2529 | { |
| 2530 | struct buffer *res; |
| 2531 | char str[17]; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2532 | int ret = 0; |
| 2533 | |
| 2534 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_PING, h2c->conn); |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2535 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2536 | if (b_data(&h2c->dbuf) < 8) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2537 | goto out; |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2538 | |
| 2539 | if (h2c_mux_busy(h2c, NULL)) { |
| 2540 | h2c->flags |= H2_CF_DEM_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2541 | goto out; |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2542 | } |
| 2543 | |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2544 | memcpy(str, |
| 2545 | "\x00\x00\x08" /* length : 8 (same payload) */ |
| 2546 | "\x06" "\x01" /* type : 6, flags : ACK */ |
| 2547 | "\x00\x00\x00\x00" /* stream ID */, 9); |
| 2548 | |
| 2549 | /* copy the original payload */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2550 | h2_get_buf_bytes(str + 9, 8, &h2c->dbuf, 0); |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2551 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2552 | res = br_tail(h2c->mbuf); |
| 2553 | retry: |
| 2554 | if (!h2_get_buf(h2c, res)) { |
| 2555 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 2556 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2557 | goto out; |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2558 | } |
| 2559 | |
Willy Tarreau | ea1b06d | 2018-07-12 09:02:47 +0200 | [diff] [blame] | 2560 | ret = b_istput(res, ist2(str, 17)); |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2561 | if (unlikely(ret <= 0)) { |
| 2562 | if (!ret) { |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 2563 | if ((res = br_tail_add(h2c->mbuf)) != NULL) |
| 2564 | goto retry; |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2565 | h2c->flags |= H2_CF_MUX_MFULL; |
| 2566 | h2c->flags |= H2_CF_DEM_MROOM; |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2567 | } |
| 2568 | else { |
| 2569 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2570 | ret = 0; |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2571 | } |
| 2572 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2573 | out: |
| 2574 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_PING, h2c->conn); |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 2575 | return ret; |
| 2576 | } |
| 2577 | |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2578 | /* processes a WINDOW_UPDATE frame whose payload is <payload> for <plen> bytes. |
| 2579 | * Returns > 0 on success or zero on missing data. It may return an error in |
Willy Tarreau | b860c73 | 2019-01-30 15:39:55 +0100 | [diff] [blame] | 2580 | * h2c or h2s. The caller must have already verified frame length and stream ID |
| 2581 | * validity. Described in RFC7540#6.9. |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2582 | */ |
| 2583 | static int h2c_handle_window_update(struct h2c *h2c, struct h2s *h2s) |
| 2584 | { |
| 2585 | int32_t inc; |
| 2586 | int error; |
| 2587 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2588 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn); |
| 2589 | |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2590 | /* process full frame only */ |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2591 | if (b_data(&h2c->dbuf) < h2c->dfl) { |
| 2592 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2593 | goto out0; |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2594 | } |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2595 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2596 | inc = h2_get_n32(&h2c->dbuf, 0); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2597 | |
| 2598 | if (h2c->dsi != 0) { |
| 2599 | /* stream window update */ |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2600 | |
| 2601 | /* it's not an error to receive WU on a closed stream */ |
| 2602 | if (h2s->st == H2_SS_CLOSED) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2603 | goto done; |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2604 | |
| 2605 | if (!inc) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 2606 | TRACE_ERROR("stream WINDOW_UPDATE inc=0", H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn, h2s); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2607 | error = H2_ERR_PROTOCOL_ERROR; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2608 | HA_ATOMIC_INC(&h2c->px_counters->strm_proto_err); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2609 | goto strm_err; |
| 2610 | } |
| 2611 | |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 2612 | if (h2s_mws(h2s) >= 0 && h2s_mws(h2s) + inc < 0) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 2613 | TRACE_ERROR("stream WINDOW_UPDATE inc<0", H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn, h2s); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2614 | error = H2_ERR_FLOW_CONTROL_ERROR; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2615 | HA_ATOMIC_INC(&h2c->px_counters->strm_proto_err); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2616 | goto strm_err; |
| 2617 | } |
| 2618 | |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 2619 | h2s->sws += inc; |
| 2620 | if (h2s_mws(h2s) > 0 && (h2s->flags & H2_SF_BLK_SFCTL)) { |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2621 | h2s->flags &= ~H2_SF_BLK_SFCTL; |
Willy Tarreau | 9edf6db | 2019-10-02 10:49:59 +0200 | [diff] [blame] | 2622 | LIST_DEL_INIT(&h2s->list); |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 2623 | if ((h2s->subs && h2s->subs->events & SUB_RETRY_SEND) || |
| 2624 | h2s->flags & (H2_SF_WANT_SHUTR|H2_SF_WANT_SHUTW)) |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 2625 | LIST_APPEND(&h2c->send_list, &h2s->list); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2626 | } |
| 2627 | } |
| 2628 | else { |
| 2629 | /* connection window update */ |
| 2630 | if (!inc) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 2631 | TRACE_ERROR("conn WINDOW_UPDATE inc=0", H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2632 | error = H2_ERR_PROTOCOL_ERROR; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2633 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2634 | goto conn_err; |
| 2635 | } |
| 2636 | |
| 2637 | if (h2c->mws >= 0 && h2c->mws + inc < 0) { |
| 2638 | error = H2_ERR_FLOW_CONTROL_ERROR; |
| 2639 | goto conn_err; |
| 2640 | } |
| 2641 | |
| 2642 | h2c->mws += inc; |
| 2643 | } |
| 2644 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2645 | done: |
| 2646 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2647 | return 1; |
| 2648 | |
| 2649 | conn_err: |
| 2650 | h2c_error(h2c, error); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2651 | out0: |
| 2652 | TRACE_DEVEL("leaving on missing data or error", H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2653 | return 0; |
| 2654 | |
| 2655 | strm_err: |
Willy Tarreau | 6432dc8 | 2019-01-30 15:42:44 +0100 | [diff] [blame] | 2656 | h2s_error(h2s, error); |
| 2657 | h2c->st0 = H2_CS_FRAME_E; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2658 | TRACE_DEVEL("leaving on stream error", H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 2659 | return 0; |
| 2660 | } |
| 2661 | |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 2662 | /* processes a GOAWAY frame, and signals all streams whose ID is greater than |
Willy Tarreau | b860c73 | 2019-01-30 15:39:55 +0100 | [diff] [blame] | 2663 | * the last ID. Returns > 0 on success or zero on missing data. The caller must |
| 2664 | * have already verified frame length and stream ID validity. Described in |
| 2665 | * RFC7540#6.8. |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 2666 | */ |
| 2667 | static int h2c_handle_goaway(struct h2c *h2c) |
| 2668 | { |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 2669 | int last; |
| 2670 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2671 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_GOAWAY, h2c->conn); |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 2672 | /* process full frame only */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2673 | if (b_data(&h2c->dbuf) < h2c->dfl) { |
| 2674 | TRACE_DEVEL("leaving on missing data", H2_EV_RX_FRAME|H2_EV_RX_GOAWAY, h2c->conn); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2675 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 2676 | return 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2677 | } |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 2678 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2679 | last = h2_get_n32(&h2c->dbuf, 0); |
| 2680 | h2c->errcode = h2_get_n32(&h2c->dbuf, 4); |
Willy Tarreau | 11cc2d6 | 2017-12-03 10:27:47 +0100 | [diff] [blame] | 2681 | if (h2c->last_sid < 0) |
| 2682 | h2c->last_sid = last; |
Willy Tarreau | 2348291 | 2019-05-07 15:23:14 +0200 | [diff] [blame] | 2683 | h2_wake_some_streams(h2c, last); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2684 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_GOAWAY, h2c->conn); |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 2685 | return 1; |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 2686 | } |
| 2687 | |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 2688 | /* processes a PRIORITY frame, and either skips it or rejects if it is |
Willy Tarreau | b860c73 | 2019-01-30 15:39:55 +0100 | [diff] [blame] | 2689 | * invalid. Returns > 0 on success or zero on missing data. It may return an |
| 2690 | * error in h2c. The caller must have already verified frame length and stream |
| 2691 | * ID validity. Described in RFC7540#6.3. |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 2692 | */ |
| 2693 | static int h2c_handle_priority(struct h2c *h2c) |
| 2694 | { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2695 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_PRIO, h2c->conn); |
| 2696 | |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 2697 | /* process full frame only */ |
Willy Tarreau | e7bbbca | 2019-08-30 15:02:22 +0200 | [diff] [blame] | 2698 | if (b_data(&h2c->dbuf) < h2c->dfl) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2699 | TRACE_DEVEL("leaving on missing data", H2_EV_RX_FRAME|H2_EV_RX_PRIO, h2c->conn); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2700 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 2701 | return 0; |
Willy Tarreau | e7bbbca | 2019-08-30 15:02:22 +0200 | [diff] [blame] | 2702 | } |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 2703 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2704 | if (h2_get_n32(&h2c->dbuf, 0) == h2c->dsi) { |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 2705 | /* 7540#5.3 : can't depend on itself */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 2706 | TRACE_ERROR("PRIORITY depends on itself", H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn); |
Willy Tarreau | b860c73 | 2019-01-30 15:39:55 +0100 | [diff] [blame] | 2707 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2708 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2709 | TRACE_DEVEL("leaving on error", H2_EV_RX_FRAME|H2_EV_RX_PRIO, h2c->conn); |
Willy Tarreau | b860c73 | 2019-01-30 15:39:55 +0100 | [diff] [blame] | 2710 | return 0; |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 2711 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2712 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_PRIO, h2c->conn); |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 2713 | return 1; |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 2714 | } |
| 2715 | |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2716 | /* processes an RST_STREAM frame, and sets the 32-bit error code on the stream. |
Willy Tarreau | b860c73 | 2019-01-30 15:39:55 +0100 | [diff] [blame] | 2717 | * Returns > 0 on success or zero on missing data. The caller must have already |
| 2718 | * verified frame length and stream ID validity. Described in RFC7540#6.4. |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2719 | */ |
| 2720 | static int h2c_handle_rst_stream(struct h2c *h2c, struct h2s *h2s) |
| 2721 | { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2722 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_RST|H2_EV_RX_EOI, h2c->conn, h2s); |
| 2723 | |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2724 | /* process full frame only */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2725 | if (b_data(&h2c->dbuf) < h2c->dfl) { |
| 2726 | TRACE_DEVEL("leaving on missing data", H2_EV_RX_FRAME|H2_EV_RX_RST|H2_EV_RX_EOI, h2c->conn, h2s); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2727 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2728 | return 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2729 | } |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2730 | |
| 2731 | /* late RST, already handled */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2732 | if (h2s->st == H2_SS_CLOSED) { |
| 2733 | TRACE_DEVEL("leaving on stream closed", H2_EV_RX_FRAME|H2_EV_RX_RST|H2_EV_RX_EOI, h2c->conn, h2s); |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2734 | return 1; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2735 | } |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2736 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2737 | h2s->errcode = h2_get_n32(&h2c->dbuf, 0); |
Willy Tarreau | 00dd078 | 2018-03-01 16:31:34 +0100 | [diff] [blame] | 2738 | h2s_close(h2s); |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2739 | |
| 2740 | if (h2s->cs) { |
Willy Tarreau | ec988c7 | 2018-12-19 18:00:29 +0100 | [diff] [blame] | 2741 | cs_set_error(h2s->cs); |
Willy Tarreau | f830f01 | 2018-12-19 17:44:55 +0100 | [diff] [blame] | 2742 | h2s_alert(h2s); |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2743 | } |
| 2744 | |
| 2745 | h2s->flags |= H2_SF_RST_RCVD; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2746 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_RST|H2_EV_RX_EOI, h2c->conn, h2s); |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2747 | return 1; |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 2748 | } |
| 2749 | |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 2750 | /* processes a HEADERS frame. Returns h2s on success or NULL on missing data. |
| 2751 | * It may return an error in h2c or h2s. The caller must consider that the |
| 2752 | * return value is the new h2s in case one was allocated (most common case). |
| 2753 | * Described in RFC7540#6.2. Most of the |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2754 | * errors here are reported as connection errors since it's impossible to |
| 2755 | * recover from such errors after the compression context has been altered. |
| 2756 | */ |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 2757 | static struct h2s *h2c_frt_handle_headers(struct h2c *h2c, struct h2s *h2s) |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2758 | { |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2759 | struct buffer rxbuf = BUF_NULL; |
Willy Tarreau | 4790f7c | 2019-01-24 11:33:02 +0100 | [diff] [blame] | 2760 | unsigned long long body_len = 0; |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2761 | uint32_t flags = 0; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2762 | int error; |
| 2763 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2764 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
| 2765 | |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2766 | if (!b_size(&h2c->dbuf)) { |
| 2767 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2768 | goto out; // empty buffer |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2769 | } |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2770 | |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2771 | if (b_data(&h2c->dbuf) < h2c->dfl && !b_full(&h2c->dbuf)) { |
| 2772 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2773 | goto out; // incomplete frame |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2774 | } |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2775 | |
| 2776 | /* now either the frame is complete or the buffer is complete */ |
| 2777 | if (h2s->st != H2_SS_IDLE) { |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 2778 | /* The stream exists/existed, this must be a trailers frame */ |
| 2779 | if (h2s->st != H2_SS_CLOSED) { |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 2780 | error = h2c_decode_headers(h2c, &h2s->rxbuf, &h2s->flags, &body_len, NULL); |
Willy Tarreau | aab1a60 | 2019-05-06 11:12:18 +0200 | [diff] [blame] | 2781 | /* unrecoverable error ? */ |
| 2782 | if (h2c->st0 >= H2_CS_ERROR) |
| 2783 | goto out; |
| 2784 | |
Christopher Faulet | 485da0b | 2021-10-08 08:56:00 +0200 | [diff] [blame] | 2785 | if (error == 0) { |
| 2786 | /* Demux not blocked because of the stream, it is an incomplete frame */ |
| 2787 | if (!(h2c->flags &H2_CF_DEM_BLOCK_ANY)) |
| 2788 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | aab1a60 | 2019-05-06 11:12:18 +0200 | [diff] [blame] | 2789 | goto out; // missing data |
Christopher Faulet | 485da0b | 2021-10-08 08:56:00 +0200 | [diff] [blame] | 2790 | } |
Willy Tarreau | aab1a60 | 2019-05-06 11:12:18 +0200 | [diff] [blame] | 2791 | |
| 2792 | if (error < 0) { |
| 2793 | /* Failed to decode this frame (e.g. too large request) |
| 2794 | * but the HPACK decompressor is still synchronized. |
| 2795 | */ |
| 2796 | h2s_error(h2s, H2_ERR_INTERNAL_ERROR); |
| 2797 | h2c->st0 = H2_CS_FRAME_E; |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 2798 | goto out; |
Willy Tarreau | aab1a60 | 2019-05-06 11:12:18 +0200 | [diff] [blame] | 2799 | } |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 2800 | goto done; |
| 2801 | } |
Willy Tarreau | 1f03550 | 2019-01-30 11:44:07 +0100 | [diff] [blame] | 2802 | /* the connection was already killed by an RST, let's consume |
| 2803 | * the data and send another RST. |
| 2804 | */ |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 2805 | error = h2c_decode_headers(h2c, &rxbuf, &flags, &body_len, NULL); |
Willy Tarreau | 1f03550 | 2019-01-30 11:44:07 +0100 | [diff] [blame] | 2806 | h2s = (struct h2s*)h2_error_stream; |
| 2807 | goto send_rst; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2808 | } |
| 2809 | else if (h2c->dsi <= h2c->max_id || !(h2c->dsi & 1)) { |
| 2810 | /* RFC7540#5.1.1 stream id > prev ones, and must be odd here */ |
| 2811 | error = H2_ERR_PROTOCOL_ERROR; |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 2812 | TRACE_ERROR("HEADERS on invalid stream ID", H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2813 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | 22de8d3 | 2018-09-05 19:55:58 +0200 | [diff] [blame] | 2814 | sess_log(h2c->conn->owner); |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2815 | goto conn_err; |
| 2816 | } |
Willy Tarreau | 415b1ee | 2019-01-02 13:59:43 +0100 | [diff] [blame] | 2817 | else if (h2c->flags & H2_CF_DEM_TOOMANY) |
| 2818 | goto out; // IDLE but too many cs still present |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2819 | |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 2820 | error = h2c_decode_headers(h2c, &rxbuf, &flags, &body_len, NULL); |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2821 | |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 2822 | /* unrecoverable error ? */ |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2823 | if (h2c->st0 >= H2_CS_ERROR) |
| 2824 | goto out; |
| 2825 | |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 2826 | if (error <= 0) { |
Christopher Faulet | 485da0b | 2021-10-08 08:56:00 +0200 | [diff] [blame] | 2827 | if (error == 0) { |
| 2828 | /* Demux not blocked because of the stream, it is an incomplete frame */ |
| 2829 | if (!(h2c->flags &H2_CF_DEM_BLOCK_ANY)) |
| 2830 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 2831 | goto out; // missing data |
Christopher Faulet | 485da0b | 2021-10-08 08:56:00 +0200 | [diff] [blame] | 2832 | } |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 2833 | |
| 2834 | /* Failed to decode this stream (e.g. too large request) |
| 2835 | * but the HPACK decompressor is still synchronized. |
| 2836 | */ |
| 2837 | h2s = (struct h2s*)h2_error_stream; |
| 2838 | goto send_rst; |
| 2839 | } |
| 2840 | |
Willy Tarreau | 29268e9 | 2021-06-17 08:29:14 +0200 | [diff] [blame] | 2841 | TRACE_USER("rcvd H2 request ", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_STRM_NEW, h2c->conn, 0, &rxbuf); |
| 2842 | |
Willy Tarreau | 22de8d3 | 2018-09-05 19:55:58 +0200 | [diff] [blame] | 2843 | /* Note: we don't emit any other logs below because ff we return |
Willy Tarreau | a8e4954 | 2018-10-03 18:53:55 +0200 | [diff] [blame] | 2844 | * positively from h2c_frt_stream_new(), the stream will report the error, |
| 2845 | * and if we return in error, h2c_frt_stream_new() will emit the error. |
Christopher Faulet | 7d013e7 | 2020-12-15 16:56:50 +0100 | [diff] [blame] | 2846 | * |
| 2847 | * Xfer the rxbuf to the stream. On success, the new stream owns the |
| 2848 | * rxbuf. On error, it is released here. |
Willy Tarreau | 22de8d3 | 2018-09-05 19:55:58 +0200 | [diff] [blame] | 2849 | */ |
Amaury Denoyelle | 90ac605 | 2021-10-18 14:45:49 +0200 | [diff] [blame] | 2850 | h2s = h2c_frt_stream_new(h2c, h2c->dsi, &rxbuf, flags); |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2851 | if (!h2s) { |
Willy Tarreau | 96a10c2 | 2018-12-23 18:30:44 +0100 | [diff] [blame] | 2852 | h2s = (struct h2s*)h2_refused_stream; |
| 2853 | goto send_rst; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2854 | } |
| 2855 | |
| 2856 | h2s->st = H2_SS_OPEN; |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2857 | h2s->flags |= flags; |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 2858 | h2s->body_len = body_len; |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2859 | |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 2860 | done: |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2861 | if (h2c->dff & H2_F_HEADERS_END_STREAM) |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2862 | h2s->flags |= H2_SF_ES_RCVD; |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2863 | |
| 2864 | if (h2s->flags & H2_SF_ES_RCVD) { |
Willy Tarreau | fc10f59 | 2019-01-30 19:28:32 +0100 | [diff] [blame] | 2865 | if (h2s->st == H2_SS_OPEN) |
| 2866 | h2s->st = H2_SS_HREM; |
| 2867 | else |
| 2868 | h2s_close(h2s); |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2869 | } |
| 2870 | |
Willy Tarreau | 3a429f0 | 2019-01-03 11:41:50 +0100 | [diff] [blame] | 2871 | /* update the max stream ID if the request is being processed */ |
| 2872 | if (h2s->id > h2c->max_id) |
| 2873 | h2c->max_id = h2s->id; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2874 | |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 2875 | return h2s; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2876 | |
| 2877 | conn_err: |
| 2878 | h2c_error(h2c, error); |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2879 | goto out; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2880 | |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 2881 | out: |
| 2882 | h2_release_buf(h2c, &rxbuf); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2883 | TRACE_DEVEL("leaving on missing data or error", H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 2884 | return NULL; |
Willy Tarreau | 96a10c2 | 2018-12-23 18:30:44 +0100 | [diff] [blame] | 2885 | |
| 2886 | send_rst: |
| 2887 | /* make the demux send an RST for the current stream. We may only |
| 2888 | * do this if we're certain that the HEADERS frame was properly |
| 2889 | * decompressed so that the HPACK decoder is still kept up to date. |
| 2890 | */ |
| 2891 | h2_release_buf(h2c, &rxbuf); |
| 2892 | h2c->st0 = H2_CS_FRAME_E; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2893 | |
Willy Tarreau | 022e5e5 | 2020-09-10 09:33:15 +0200 | [diff] [blame] | 2894 | TRACE_USER("rejected H2 request", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_STRM_NEW|H2_EV_STRM_END, h2c->conn, 0, &rxbuf); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2895 | TRACE_DEVEL("leaving on error", H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
Willy Tarreau | 96a10c2 | 2018-12-23 18:30:44 +0100 | [diff] [blame] | 2896 | return h2s; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 2897 | } |
| 2898 | |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2899 | /* processes a HEADERS frame. Returns h2s on success or NULL on missing data. |
| 2900 | * It may return an error in h2c or h2s. Described in RFC7540#6.2. Most of the |
| 2901 | * errors here are reported as connection errors since it's impossible to |
| 2902 | * recover from such errors after the compression context has been altered. |
| 2903 | */ |
| 2904 | static struct h2s *h2c_bck_handle_headers(struct h2c *h2c, struct h2s *h2s) |
| 2905 | { |
Christopher Faulet | 6884aa3 | 2019-09-23 15:28:20 +0200 | [diff] [blame] | 2906 | struct buffer rxbuf = BUF_NULL; |
| 2907 | unsigned long long body_len = 0; |
| 2908 | uint32_t flags = 0; |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2909 | int error; |
| 2910 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2911 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
| 2912 | |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2913 | if (!b_size(&h2c->dbuf)) { |
| 2914 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2915 | goto fail; // empty buffer |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2916 | } |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2917 | |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2918 | if (b_data(&h2c->dbuf) < h2c->dfl && !b_full(&h2c->dbuf)) { |
| 2919 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2920 | goto fail; // incomplete frame |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 2921 | } |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2922 | |
Christopher Faulet | 6884aa3 | 2019-09-23 15:28:20 +0200 | [diff] [blame] | 2923 | if (h2s->st != H2_SS_CLOSED) { |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 2924 | error = h2c_decode_headers(h2c, &h2s->rxbuf, &h2s->flags, &h2s->body_len, h2s->upgrade_protocol); |
Christopher Faulet | 6884aa3 | 2019-09-23 15:28:20 +0200 | [diff] [blame] | 2925 | } |
| 2926 | else { |
| 2927 | /* the connection was already killed by an RST, let's consume |
| 2928 | * the data and send another RST. |
| 2929 | */ |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 2930 | error = h2c_decode_headers(h2c, &rxbuf, &flags, &body_len, NULL); |
Christopher Faulet | ea7a778 | 2019-09-26 16:19:13 +0200 | [diff] [blame] | 2931 | h2s = (struct h2s*)h2_error_stream; |
Christopher Faulet | 6884aa3 | 2019-09-23 15:28:20 +0200 | [diff] [blame] | 2932 | h2c->st0 = H2_CS_FRAME_E; |
| 2933 | goto send_rst; |
| 2934 | } |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2935 | |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 2936 | /* unrecoverable error ? */ |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2937 | if (h2c->st0 >= H2_CS_ERROR) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2938 | goto fail; |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2939 | |
Willy Tarreau | 08bb1d6 | 2019-01-30 16:55:48 +0100 | [diff] [blame] | 2940 | if (h2s->st != H2_SS_OPEN && h2s->st != H2_SS_HLOC) { |
| 2941 | /* RFC7540#5.1 */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 2942 | TRACE_ERROR("response HEADERS in invalid state", H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
Willy Tarreau | 08bb1d6 | 2019-01-30 16:55:48 +0100 | [diff] [blame] | 2943 | h2s_error(h2s, H2_ERR_STREAM_CLOSED); |
| 2944 | h2c->st0 = H2_CS_FRAME_E; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2945 | HA_ATOMIC_INC(&h2c->px_counters->strm_proto_err); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2946 | goto fail; |
Willy Tarreau | 08bb1d6 | 2019-01-30 16:55:48 +0100 | [diff] [blame] | 2947 | } |
| 2948 | |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 2949 | if (error <= 0) { |
Christopher Faulet | 485da0b | 2021-10-08 08:56:00 +0200 | [diff] [blame] | 2950 | if (error == 0) { |
| 2951 | /* Demux not blocked because of the stream, it is an incomplete frame */ |
| 2952 | if (!(h2c->flags &H2_CF_DEM_BLOCK_ANY)) |
| 2953 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2954 | goto fail; // missing data |
Christopher Faulet | 485da0b | 2021-10-08 08:56:00 +0200 | [diff] [blame] | 2955 | } |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 2956 | |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2957 | /* stream error : send RST_STREAM */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 2958 | TRACE_ERROR("couldn't decode response HEADERS", H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 2959 | h2s_error(h2s, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2960 | h2c->st0 = H2_CS_FRAME_E; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 2961 | HA_ATOMIC_INC(&h2c->px_counters->strm_proto_err); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2962 | goto fail; |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2963 | } |
| 2964 | |
Christopher Faulet | fa922f0 | 2019-05-07 10:55:17 +0200 | [diff] [blame] | 2965 | if (h2c->dff & H2_F_HEADERS_END_STREAM) |
Willy Tarreau | 45ffc0c | 2019-01-03 09:32:20 +0100 | [diff] [blame] | 2966 | h2s->flags |= H2_SF_ES_RCVD; |
Willy Tarreau | 45ffc0c | 2019-01-03 09:32:20 +0100 | [diff] [blame] | 2967 | |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 2968 | if (h2s->cs && (h2s->endp->flags & CS_EP_ERROR) && h2s->st < H2_SS_ERROR) |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2969 | h2s->st = H2_SS_ERROR; |
Christopher Faulet | fa922f0 | 2019-05-07 10:55:17 +0200 | [diff] [blame] | 2970 | else if (h2s->flags & H2_SF_ES_RCVD) { |
| 2971 | if (h2s->st == H2_SS_OPEN) |
| 2972 | h2s->st = H2_SS_HREM; |
| 2973 | else if (h2s->st == H2_SS_HLOC) |
| 2974 | h2s_close(h2s); |
| 2975 | } |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2976 | |
Christopher Faulet | f95f876 | 2021-01-22 11:59:07 +0100 | [diff] [blame] | 2977 | /* Unblock busy server h2s waiting for the response headers to validate |
| 2978 | * the tunnel establishment or the end of the response of an oborted |
| 2979 | * tunnel |
| 2980 | */ |
| 2981 | if ((h2s->flags & (H2_SF_BODY_TUNNEL|H2_SF_BLK_MBUSY)) == (H2_SF_BODY_TUNNEL|H2_SF_BLK_MBUSY) || |
| 2982 | (h2s->flags & (H2_SF_TUNNEL_ABRT|H2_SF_ES_RCVD|H2_SF_BLK_MBUSY)) == (H2_SF_TUNNEL_ABRT|H2_SF_ES_RCVD|H2_SF_BLK_MBUSY)) { |
| 2983 | TRACE_STATE("Unblock h2s blocked on tunnel establishment/abort", H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
| 2984 | h2s->flags &= ~H2_SF_BLK_MBUSY; |
| 2985 | } |
| 2986 | |
Willy Tarreau | 9abb317 | 2021-06-16 18:32:42 +0200 | [diff] [blame] | 2987 | TRACE_USER("rcvd H2 response ", H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, 0, &h2s->rxbuf); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2988 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 2989 | return h2s; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 2990 | fail: |
| 2991 | TRACE_DEVEL("leaving on missing data or error", H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
| 2992 | return NULL; |
Christopher Faulet | 6884aa3 | 2019-09-23 15:28:20 +0200 | [diff] [blame] | 2993 | |
| 2994 | send_rst: |
| 2995 | /* make the demux send an RST for the current stream. We may only |
| 2996 | * do this if we're certain that the HEADERS frame was properly |
| 2997 | * decompressed so that the HPACK decoder is still kept up to date. |
| 2998 | */ |
| 2999 | h2_release_buf(h2c, &rxbuf); |
| 3000 | h2c->st0 = H2_CS_FRAME_E; |
| 3001 | |
Willy Tarreau | 022e5e5 | 2020-09-10 09:33:15 +0200 | [diff] [blame] | 3002 | TRACE_USER("rejected H2 response", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_STRM_NEW|H2_EV_STRM_END, h2c->conn, 0, &rxbuf); |
Christopher Faulet | 6884aa3 | 2019-09-23 15:28:20 +0200 | [diff] [blame] | 3003 | TRACE_DEVEL("leaving on error", H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
| 3004 | return h2s; |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 3005 | } |
| 3006 | |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3007 | /* processes a DATA frame. Returns > 0 on success or zero on missing data. |
| 3008 | * It may return an error in h2c or h2s. Described in RFC7540#6.1. |
| 3009 | */ |
Christopher Faulet | fac0f8f | 2020-12-07 18:27:03 +0100 | [diff] [blame] | 3010 | static int h2c_handle_data(struct h2c *h2c, struct h2s *h2s) |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3011 | { |
| 3012 | int error; |
| 3013 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3014 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
| 3015 | |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3016 | /* note that empty DATA frames are perfectly valid and sometimes used |
| 3017 | * to signal an end of stream (with the ES flag). |
| 3018 | */ |
| 3019 | |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3020 | if (!b_size(&h2c->dbuf) && h2c->dfl) { |
| 3021 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3022 | goto fail; // empty buffer |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3023 | } |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3024 | |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3025 | if (b_data(&h2c->dbuf) < h2c->dfl && !b_full(&h2c->dbuf)) { |
| 3026 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3027 | goto fail; // incomplete frame |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3028 | } |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3029 | |
| 3030 | /* now either the frame is complete or the buffer is complete */ |
| 3031 | |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3032 | if (h2s->st != H2_SS_OPEN && h2s->st != H2_SS_HLOC) { |
| 3033 | /* RFC7540#6.1 */ |
| 3034 | error = H2_ERR_STREAM_CLOSED; |
| 3035 | goto strm_err; |
| 3036 | } |
| 3037 | |
Christopher Faulet | 4f09ec8 | 2019-06-19 09:25:58 +0200 | [diff] [blame] | 3038 | if ((h2s->flags & H2_SF_DATA_CLEN) && (h2c->dfl - h2c->dpl) > h2s->body_len) { |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 3039 | /* RFC7540#8.1.2 */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3040 | TRACE_ERROR("DATA frame larger than content-length", H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 3041 | error = H2_ERR_PROTOCOL_ERROR; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3042 | HA_ATOMIC_INC(&h2c->px_counters->strm_proto_err); |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 3043 | goto strm_err; |
| 3044 | } |
Christopher Faulet | 91b21dc | 2021-01-22 12:13:15 +0100 | [diff] [blame] | 3045 | if (!(h2c->flags & H2_CF_IS_BACK) && |
| 3046 | (h2s->flags & (H2_SF_TUNNEL_ABRT|H2_SF_ES_SENT)) == (H2_SF_TUNNEL_ABRT|H2_SF_ES_SENT) && |
| 3047 | ((h2c->dfl - h2c->dpl) || !(h2c->dff & H2_F_DATA_END_STREAM))) { |
| 3048 | /* a tunnel attempt was aborted but the client still try to send some raw data. |
| 3049 | * Thus the stream is closed with the CANCEL error. Here we take care it is not |
| 3050 | * an empty DATA Frame with the ES flag. The error is only handled if ES was |
| 3051 | * already sent to the client because depending on the scheduling, these data may |
Ilya Shipitsin | acf8459 | 2021-02-06 22:29:08 +0500 | [diff] [blame] | 3052 | * have been sent before the server response but not handle here. |
Christopher Faulet | 91b21dc | 2021-01-22 12:13:15 +0100 | [diff] [blame] | 3053 | */ |
| 3054 | TRACE_ERROR("Request DATA frame for aborted tunnel", H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
| 3055 | error = H2_ERR_CANCEL; |
| 3056 | goto strm_err; |
| 3057 | } |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 3058 | |
Willy Tarreau | a56a6de | 2018-02-26 15:59:07 +0100 | [diff] [blame] | 3059 | if (!h2_frt_transfer_data(h2s)) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3060 | goto fail; |
Willy Tarreau | a56a6de | 2018-02-26 15:59:07 +0100 | [diff] [blame] | 3061 | |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3062 | /* call the upper layers to process the frame, then let the upper layer |
| 3063 | * notify the stream about any change. |
| 3064 | */ |
| 3065 | if (!h2s->cs) { |
Willy Tarreau | 082c457 | 2019-08-06 10:11:02 +0200 | [diff] [blame] | 3066 | /* The upper layer has already closed, this may happen on |
| 3067 | * 4xx/redirects during POST, or when receiving a response |
| 3068 | * from an H2 server after the client has aborted. |
| 3069 | */ |
| 3070 | error = H2_ERR_CANCEL; |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3071 | goto strm_err; |
| 3072 | } |
| 3073 | |
Willy Tarreau | 8f650c3 | 2017-11-21 19:36:21 +0100 | [diff] [blame] | 3074 | if (h2c->st0 >= H2_CS_ERROR) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3075 | goto fail; |
Willy Tarreau | 8f650c3 | 2017-11-21 19:36:21 +0100 | [diff] [blame] | 3076 | |
Willy Tarreau | 721c974 | 2017-11-07 11:05:42 +0100 | [diff] [blame] | 3077 | if (h2s->st >= H2_SS_ERROR) { |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3078 | /* stream error : send RST_STREAM */ |
Willy Tarreau | a20a519 | 2017-12-27 11:02:06 +0100 | [diff] [blame] | 3079 | h2c->st0 = H2_CS_FRAME_E; |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3080 | } |
| 3081 | |
| 3082 | /* check for completion : the callee will change this to FRAME_A or |
| 3083 | * FRAME_H once done. |
| 3084 | */ |
| 3085 | if (h2c->st0 == H2_CS_FRAME_P) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3086 | goto fail; |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3087 | |
Willy Tarreau | c4134ba | 2017-12-11 18:45:08 +0100 | [diff] [blame] | 3088 | /* last frame */ |
| 3089 | if (h2c->dff & H2_F_DATA_END_STREAM) { |
Christopher Faulet | fa922f0 | 2019-05-07 10:55:17 +0200 | [diff] [blame] | 3090 | h2s->flags |= H2_SF_ES_RCVD; |
Willy Tarreau | fc10f59 | 2019-01-30 19:28:32 +0100 | [diff] [blame] | 3091 | if (h2s->st == H2_SS_OPEN) |
| 3092 | h2s->st = H2_SS_HREM; |
| 3093 | else |
| 3094 | h2s_close(h2s); |
| 3095 | |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 3096 | if (h2s->flags & H2_SF_DATA_CLEN && h2s->body_len) { |
| 3097 | /* RFC7540#8.1.2 */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3098 | TRACE_ERROR("ES on DATA frame before content-length", H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 3099 | error = H2_ERR_PROTOCOL_ERROR; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3100 | HA_ATOMIC_INC(&h2c->px_counters->strm_proto_err); |
Willy Tarreau | 1915ca2 | 2019-01-24 11:49:37 +0100 | [diff] [blame] | 3101 | goto strm_err; |
| 3102 | } |
Willy Tarreau | c4134ba | 2017-12-11 18:45:08 +0100 | [diff] [blame] | 3103 | } |
| 3104 | |
Christopher Faulet | f95f876 | 2021-01-22 11:59:07 +0100 | [diff] [blame] | 3105 | /* Unblock busy server h2s waiting for the end of the response for an |
| 3106 | * aborted tunnel |
| 3107 | */ |
| 3108 | if ((h2c->flags & H2_CF_IS_BACK) && |
| 3109 | (h2s->flags & (H2_SF_TUNNEL_ABRT|H2_SF_ES_RCVD|H2_SF_BLK_MBUSY)) == (H2_SF_TUNNEL_ABRT|H2_SF_ES_RCVD|H2_SF_BLK_MBUSY)) { |
| 3110 | TRACE_STATE("Unblock h2s blocked on tunnel abort", H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
| 3111 | h2s->flags &= ~H2_SF_BLK_MBUSY; |
| 3112 | } |
| 3113 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3114 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3115 | return 1; |
| 3116 | |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3117 | strm_err: |
Willy Tarreau | 6432dc8 | 2019-01-30 15:42:44 +0100 | [diff] [blame] | 3118 | h2s_error(h2s, error); |
| 3119 | h2c->st0 = H2_CS_FRAME_E; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3120 | fail: |
| 3121 | TRACE_DEVEL("leaving on missing data or error", H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3122 | return 0; |
| 3123 | } |
| 3124 | |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3125 | /* check that the current frame described in h2c->{dsi,dft,dfl,dff,...} is |
| 3126 | * valid for the current stream state. This is needed only after parsing the |
| 3127 | * frame header but in practice it can be performed at any time during |
| 3128 | * H2_CS_FRAME_P since no state transition happens there. Returns >0 on success |
| 3129 | * or 0 in case of error, in which case either h2s or h2c will carry an error. |
| 3130 | */ |
| 3131 | static int h2_frame_check_vs_state(struct h2c *h2c, struct h2s *h2s) |
| 3132 | { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3133 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_FHDR, h2c->conn, h2s); |
| 3134 | |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3135 | if (h2s->st == H2_SS_IDLE && |
| 3136 | h2c->dft != H2_FT_HEADERS && h2c->dft != H2_FT_PRIORITY) { |
| 3137 | /* RFC7540#5.1: any frame other than HEADERS or PRIORITY in |
| 3138 | * this state MUST be treated as a connection error |
| 3139 | */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3140 | TRACE_ERROR("invalid frame type for IDLE state", H2_EV_RX_FRAME|H2_EV_RX_FHDR, h2c->conn, h2s); |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3141 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3142 | if (!h2c->nb_streams && !(h2c->flags & H2_CF_IS_BACK)) { |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3143 | /* only log if no other stream can report the error */ |
| 3144 | sess_log(h2c->conn->owner); |
| 3145 | } |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3146 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3147 | TRACE_DEVEL("leaving in error (idle&!hdrs&!prio)", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn, h2s); |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3148 | return 0; |
| 3149 | } |
| 3150 | |
Willy Tarreau | 57a1816 | 2019-11-24 14:57:53 +0100 | [diff] [blame] | 3151 | if (h2s->st == H2_SS_IDLE && (h2c->flags & H2_CF_IS_BACK)) { |
| 3152 | /* only PUSH_PROMISE would be permitted here */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3153 | TRACE_ERROR("invalid frame type for IDLE state (back)", H2_EV_RX_FRAME|H2_EV_RX_FHDR, h2c->conn, h2s); |
Willy Tarreau | 57a1816 | 2019-11-24 14:57:53 +0100 | [diff] [blame] | 3154 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3155 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | 57a1816 | 2019-11-24 14:57:53 +0100 | [diff] [blame] | 3156 | TRACE_DEVEL("leaving in error (idle&back)", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn, h2s); |
| 3157 | return 0; |
| 3158 | } |
| 3159 | |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3160 | if (h2s->st == H2_SS_HREM && h2c->dft != H2_FT_WINDOW_UPDATE && |
| 3161 | h2c->dft != H2_FT_RST_STREAM && h2c->dft != H2_FT_PRIORITY) { |
| 3162 | /* RFC7540#5.1: any frame other than WU/PRIO/RST in |
| 3163 | * this state MUST be treated as a stream error. |
| 3164 | * 6.2, 6.6 and 6.10 further mandate that HEADERS/ |
| 3165 | * PUSH_PROMISE/CONTINUATION cause connection errors. |
| 3166 | */ |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 3167 | if (h2_ft_bit(h2c->dft) & H2_FT_HDR_MASK) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3168 | TRACE_ERROR("invalid frame type for HREM state", H2_EV_RX_FRAME|H2_EV_RX_FHDR, h2c->conn, h2s); |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3169 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3170 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 3171 | } |
| 3172 | else { |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3173 | h2s_error(h2s, H2_ERR_STREAM_CLOSED); |
Amaury Denoyelle | a887923 | 2020-10-27 17:16:03 +0100 | [diff] [blame] | 3174 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3175 | TRACE_DEVEL("leaving in error (hrem&!wu&!rst&!prio)", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn, h2s); |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3176 | return 0; |
| 3177 | } |
| 3178 | |
| 3179 | /* Below the management of frames received in closed state is a |
| 3180 | * bit hackish because the spec makes strong differences between |
| 3181 | * streams closed by receiving RST, sending RST, and seeing ES |
| 3182 | * in both directions. In addition to this, the creation of a |
| 3183 | * new stream reusing the identifier of a closed one will be |
| 3184 | * detected here. Given that we cannot keep track of all closed |
| 3185 | * streams forever, we consider that unknown closed streams were |
| 3186 | * closed on RST received, which allows us to respond with an |
| 3187 | * RST without breaking the connection (eg: to abort a transfer). |
| 3188 | * Some frames have to be silently ignored as well. |
| 3189 | */ |
| 3190 | if (h2s->st == H2_SS_CLOSED && h2c->dsi) { |
| 3191 | if (!(h2c->flags & H2_CF_IS_BACK) && h2_ft_bit(h2c->dft) & H2_FT_HDR_MASK) { |
| 3192 | /* #5.1.1: The identifier of a newly |
| 3193 | * established stream MUST be numerically |
| 3194 | * greater than all streams that the initiating |
| 3195 | * endpoint has opened or reserved. This |
| 3196 | * governs streams that are opened using a |
| 3197 | * HEADERS frame and streams that are reserved |
| 3198 | * using PUSH_PROMISE. An endpoint that |
| 3199 | * receives an unexpected stream identifier |
| 3200 | * MUST respond with a connection error. |
| 3201 | */ |
| 3202 | h2c_error(h2c, H2_ERR_STREAM_CLOSED); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3203 | TRACE_DEVEL("leaving in error (closed&hdrmask)", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn, h2s); |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3204 | return 0; |
| 3205 | } |
| 3206 | |
Willy Tarreau | 4c08f12 | 2019-09-26 08:47:15 +0200 | [diff] [blame] | 3207 | if (h2s->flags & H2_SF_RST_RCVD && |
| 3208 | !(h2_ft_bit(h2c->dft) & (H2_FT_HDR_MASK | H2_FT_RST_STREAM_BIT | H2_FT_PRIORITY_BIT | H2_FT_WINDOW_UPDATE_BIT))) { |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3209 | /* RFC7540#5.1:closed: an endpoint that |
| 3210 | * receives any frame other than PRIORITY after |
| 3211 | * receiving a RST_STREAM MUST treat that as a |
| 3212 | * stream error of type STREAM_CLOSED. |
| 3213 | * |
| 3214 | * Note that old streams fall into this category |
| 3215 | * and will lead to an RST being sent. |
| 3216 | * |
| 3217 | * However, we cannot generalize this to all frame types. Those |
| 3218 | * carrying compression state must still be processed before |
| 3219 | * being dropped or we'll desynchronize the decoder. This can |
| 3220 | * happen with request trailers received after sending an |
| 3221 | * RST_STREAM, or with header/trailers responses received after |
| 3222 | * sending RST_STREAM (aborted stream). |
Willy Tarreau | 4c08f12 | 2019-09-26 08:47:15 +0200 | [diff] [blame] | 3223 | * |
| 3224 | * In addition, since our CLOSED streams always carry the |
Ilya Shipitsin | 46a030c | 2020-07-05 16:36:08 +0500 | [diff] [blame] | 3225 | * RST_RCVD bit, we don't want to accidentally catch valid |
Willy Tarreau | 4c08f12 | 2019-09-26 08:47:15 +0200 | [diff] [blame] | 3226 | * frames for a closed stream, i.e. RST/PRIO/WU. |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3227 | */ |
| 3228 | h2s_error(h2s, H2_ERR_STREAM_CLOSED); |
| 3229 | h2c->st0 = H2_CS_FRAME_E; |
Christopher Faulet | 6884aa3 | 2019-09-23 15:28:20 +0200 | [diff] [blame] | 3230 | TRACE_DEVEL("leaving in error (rst_rcvd&!hdrmask)", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn, h2s); |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3231 | return 0; |
| 3232 | } |
| 3233 | |
| 3234 | /* RFC7540#5.1:closed: if this state is reached as a |
| 3235 | * result of sending a RST_STREAM frame, the peer that |
| 3236 | * receives the RST_STREAM might have already sent |
| 3237 | * frames on the stream that cannot be withdrawn. An |
| 3238 | * endpoint MUST ignore frames that it receives on |
| 3239 | * closed streams after it has sent a RST_STREAM |
| 3240 | * frame. An endpoint MAY choose to limit the period |
| 3241 | * over which it ignores frames and treat frames that |
| 3242 | * arrive after this time as being in error. |
| 3243 | */ |
| 3244 | if (h2s->id && !(h2s->flags & H2_SF_RST_SENT)) { |
| 3245 | /* RFC7540#5.1:closed: any frame other than |
| 3246 | * PRIO/WU/RST in this state MUST be treated as |
| 3247 | * a connection error |
| 3248 | */ |
| 3249 | if (h2c->dft != H2_FT_RST_STREAM && |
| 3250 | h2c->dft != H2_FT_PRIORITY && |
| 3251 | h2c->dft != H2_FT_WINDOW_UPDATE) { |
| 3252 | h2c_error(h2c, H2_ERR_STREAM_CLOSED); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3253 | TRACE_DEVEL("leaving in error (rst_sent&!rst&!prio&!wu)", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn, h2s); |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3254 | return 0; |
| 3255 | } |
| 3256 | } |
| 3257 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3258 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_FHDR, h2c->conn, h2s); |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3259 | return 1; |
| 3260 | } |
| 3261 | |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3262 | /* process Rx frames to be demultiplexed */ |
| 3263 | static void h2_process_demux(struct h2c *h2c) |
| 3264 | { |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 3265 | struct h2s *h2s = NULL, *tmp_h2s; |
Willy Tarreau | 54f46e5 | 2019-01-30 15:11:03 +0100 | [diff] [blame] | 3266 | struct h2_fh hdr; |
| 3267 | unsigned int padlen = 0; |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 3268 | int32_t old_iw = h2c->miw; |
Willy Tarreau | f3ee069 | 2017-10-17 08:18:25 +0200 | [diff] [blame] | 3269 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3270 | TRACE_ENTER(H2_EV_H2C_WAKE, h2c->conn); |
| 3271 | |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 3272 | if (h2c->st0 >= H2_CS_ERROR) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3273 | goto out; |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 3274 | |
| 3275 | if (unlikely(h2c->st0 < H2_CS_FRAME_H)) { |
| 3276 | if (h2c->st0 == H2_CS_PREFACE) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3277 | TRACE_STATE("expecting preface", H2_EV_RX_PREFACE, h2c->conn); |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 3278 | if (h2c->flags & H2_CF_IS_BACK) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3279 | goto out; |
| 3280 | |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 3281 | if (unlikely(h2c_frt_recv_preface(h2c) <= 0)) { |
| 3282 | /* RFC7540#3.5: a GOAWAY frame MAY be omitted */ |
Willy Tarreau | 22de8d3 | 2018-09-05 19:55:58 +0200 | [diff] [blame] | 3283 | if (h2c->st0 == H2_CS_ERROR) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3284 | TRACE_PROTO("failed to receive preface", H2_EV_RX_PREFACE|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 3285 | h2c->st0 = H2_CS_ERROR2; |
Willy Tarreau | ee4684f | 2021-06-17 08:08:48 +0200 | [diff] [blame] | 3286 | if (b_data(&h2c->dbuf) || |
Christopher Faulet | 3f35da2 | 2021-07-26 10:18:35 +0200 | [diff] [blame] | 3287 | !(((const struct session *)h2c->conn->owner)->fe->options & (PR_O_NULLNOLOG|PR_O_IGNORE_PRB))) |
Willy Tarreau | ee4684f | 2021-06-17 08:08:48 +0200 | [diff] [blame] | 3288 | sess_log(h2c->conn->owner); |
Willy Tarreau | 22de8d3 | 2018-09-05 19:55:58 +0200 | [diff] [blame] | 3289 | } |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3290 | goto done; |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 3291 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3292 | TRACE_PROTO("received preface", H2_EV_RX_PREFACE, h2c->conn); |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 3293 | |
| 3294 | h2c->max_id = 0; |
| 3295 | h2c->st0 = H2_CS_SETTINGS1; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3296 | TRACE_STATE("switching to SETTINGS1", H2_EV_RX_PREFACE, h2c->conn); |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 3297 | } |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3298 | |
| 3299 | if (h2c->st0 == H2_CS_SETTINGS1) { |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3300 | /* ensure that what is pending is a valid SETTINGS frame |
| 3301 | * without an ACK. |
| 3302 | */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3303 | TRACE_STATE("expecting settings", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_RX_SETTINGS, h2c->conn); |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3304 | if (!h2_get_frame_hdr(&h2c->dbuf, &hdr)) { |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3305 | /* RFC7540#3.5: a GOAWAY frame MAY be omitted */ |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3306 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 22de8d3 | 2018-09-05 19:55:58 +0200 | [diff] [blame] | 3307 | if (h2c->st0 == H2_CS_ERROR) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3308 | TRACE_ERROR("failed to receive settings", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_RX_SETTINGS|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3309 | h2c->st0 = H2_CS_ERROR2; |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3310 | if (!(h2c->flags & H2_CF_IS_BACK)) |
| 3311 | sess_log(h2c->conn->owner); |
Willy Tarreau | 22de8d3 | 2018-09-05 19:55:58 +0200 | [diff] [blame] | 3312 | } |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3313 | goto done; |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3314 | } |
| 3315 | |
| 3316 | if (hdr.sid || hdr.ft != H2_FT_SETTINGS || hdr.ff & H2_F_SETTINGS_ACK) { |
| 3317 | /* RFC7540#3.5: a GOAWAY frame MAY be omitted */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3318 | TRACE_ERROR("unexpected frame type or flags", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_RX_SETTINGS|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3319 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
| 3320 | h2c->st0 = H2_CS_ERROR2; |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3321 | if (!(h2c->flags & H2_CF_IS_BACK)) |
| 3322 | sess_log(h2c->conn->owner); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3323 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3324 | goto done; |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3325 | } |
| 3326 | |
Willy Tarreau | 3f0e1ec | 2018-04-17 10:28:27 +0200 | [diff] [blame] | 3327 | if ((int)hdr.len < 0 || (int)hdr.len > global.tune.bufsize) { |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3328 | /* RFC7540#3.5: a GOAWAY frame MAY be omitted */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3329 | TRACE_ERROR("invalid settings frame length", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_RX_SETTINGS|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3330 | h2c_error(h2c, H2_ERR_FRAME_SIZE_ERROR); |
| 3331 | h2c->st0 = H2_CS_ERROR2; |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3332 | if (!(h2c->flags & H2_CF_IS_BACK)) |
| 3333 | sess_log(h2c->conn->owner); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3334 | goto done; |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3335 | } |
| 3336 | |
Willy Tarreau | 3bf6918 | 2018-12-21 15:34:50 +0100 | [diff] [blame] | 3337 | /* that's OK, switch to FRAME_P to process it. This is |
| 3338 | * a SETTINGS frame whose header has already been |
| 3339 | * deleted above. |
| 3340 | */ |
Willy Tarreau | 54f46e5 | 2019-01-30 15:11:03 +0100 | [diff] [blame] | 3341 | padlen = 0; |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3342 | HA_ATOMIC_INC(&h2c->px_counters->settings_rcvd); |
Willy Tarreau | 54f46e5 | 2019-01-30 15:11:03 +0100 | [diff] [blame] | 3343 | goto new_frame; |
Willy Tarreau | 4c3690b | 2017-10-10 15:16:55 +0200 | [diff] [blame] | 3344 | } |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 3345 | } |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3346 | |
| 3347 | /* process as many incoming frames as possible below */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3348 | while (1) { |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3349 | int ret = 0; |
| 3350 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3351 | if (!b_data(&h2c->dbuf)) { |
| 3352 | TRACE_DEVEL("no more Rx data", H2_EV_RX_FRAME, h2c->conn); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3353 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
| 3354 | break; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3355 | } |
| 3356 | |
| 3357 | if (h2c->st0 >= H2_CS_ERROR) { |
| 3358 | TRACE_STATE("end of connection reported", H2_EV_RX_FRAME|H2_EV_RX_EOI, h2c->conn); |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3359 | break; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3360 | } |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3361 | |
| 3362 | if (h2c->st0 == H2_CS_FRAME_H) { |
Willy Tarreau | 30d05f3 | 2019-08-06 15:49:51 +0200 | [diff] [blame] | 3363 | h2c->rcvd_s = 0; |
| 3364 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3365 | TRACE_STATE("expecting H2 frame header", H2_EV_RX_FRAME|H2_EV_RX_FHDR, h2c->conn); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3366 | if (!h2_peek_frame_hdr(&h2c->dbuf, 0, &hdr)) { |
| 3367 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3368 | break; |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3369 | } |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3370 | |
Willy Tarreau | 3f0e1ec | 2018-04-17 10:28:27 +0200 | [diff] [blame] | 3371 | if ((int)hdr.len < 0 || (int)hdr.len > global.tune.bufsize) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3372 | TRACE_ERROR("invalid H2 frame length", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3373 | h2c_error(h2c, H2_ERR_FRAME_SIZE_ERROR); |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3374 | if (!h2c->nb_streams && !(h2c->flags & H2_CF_IS_BACK)) { |
Willy Tarreau | 22de8d3 | 2018-09-05 19:55:58 +0200 | [diff] [blame] | 3375 | /* only log if no other stream can report the error */ |
| 3376 | sess_log(h2c->conn->owner); |
| 3377 | } |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3378 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3379 | break; |
| 3380 | } |
| 3381 | |
Christopher Faulet | dd2a562 | 2019-06-18 12:22:38 +0200 | [diff] [blame] | 3382 | padlen = 0; |
Willy Tarreau | 3bf6918 | 2018-12-21 15:34:50 +0100 | [diff] [blame] | 3383 | if (h2_ft_bit(hdr.ft) & H2_FT_PADDED_MASK && hdr.ff & H2_F_PADDED) { |
| 3384 | /* If the frame is padded (HEADERS, PUSH_PROMISE or DATA), |
| 3385 | * we read the pad length and drop it from the remaining |
| 3386 | * payload (one byte + the 9 remaining ones = 10 total |
| 3387 | * removed), so we have a frame payload starting after the |
| 3388 | * pad len. Flow controlled frames (DATA) also count the |
| 3389 | * padlen in the flow control, so it must be adjusted. |
| 3390 | */ |
| 3391 | if (hdr.len < 1) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3392 | TRACE_ERROR("invalid H2 padded frame length", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 3bf6918 | 2018-12-21 15:34:50 +0100 | [diff] [blame] | 3393 | h2c_error(h2c, H2_ERR_FRAME_SIZE_ERROR); |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3394 | if (!(h2c->flags & H2_CF_IS_BACK)) |
| 3395 | sess_log(h2c->conn->owner); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3396 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3397 | goto done; |
Willy Tarreau | 3bf6918 | 2018-12-21 15:34:50 +0100 | [diff] [blame] | 3398 | } |
| 3399 | hdr.len--; |
| 3400 | |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3401 | if (b_data(&h2c->dbuf) < 10) { |
| 3402 | h2c->flags |= H2_CF_DEM_SHORT_READ; |
Willy Tarreau | 3bf6918 | 2018-12-21 15:34:50 +0100 | [diff] [blame] | 3403 | break; // missing padlen |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3404 | } |
Willy Tarreau | 3bf6918 | 2018-12-21 15:34:50 +0100 | [diff] [blame] | 3405 | |
| 3406 | padlen = *(uint8_t *)b_peek(&h2c->dbuf, 9); |
| 3407 | |
| 3408 | if (padlen > hdr.len) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3409 | TRACE_ERROR("invalid H2 padding length", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 3bf6918 | 2018-12-21 15:34:50 +0100 | [diff] [blame] | 3410 | /* RFC7540#6.1 : pad length = length of |
| 3411 | * frame payload or greater => error. |
| 3412 | */ |
| 3413 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3414 | if (!(h2c->flags & H2_CF_IS_BACK)) |
| 3415 | sess_log(h2c->conn->owner); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3416 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3417 | goto done; |
Willy Tarreau | 3bf6918 | 2018-12-21 15:34:50 +0100 | [diff] [blame] | 3418 | } |
| 3419 | |
| 3420 | if (h2_ft_bit(hdr.ft) & H2_FT_FC_MASK) { |
| 3421 | h2c->rcvd_c++; |
| 3422 | h2c->rcvd_s++; |
| 3423 | } |
| 3424 | b_del(&h2c->dbuf, 1); |
| 3425 | } |
| 3426 | h2_skip_frame_hdr(&h2c->dbuf); |
Willy Tarreau | 54f46e5 | 2019-01-30 15:11:03 +0100 | [diff] [blame] | 3427 | |
| 3428 | new_frame: |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3429 | h2c->dfl = hdr.len; |
| 3430 | h2c->dsi = hdr.sid; |
| 3431 | h2c->dft = hdr.ft; |
| 3432 | h2c->dff = hdr.ff; |
Willy Tarreau | 3bf6918 | 2018-12-21 15:34:50 +0100 | [diff] [blame] | 3433 | h2c->dpl = padlen; |
Willy Tarreau | 73db434 | 2019-09-25 07:28:44 +0200 | [diff] [blame] | 3434 | TRACE_STATE("rcvd H2 frame header, switching to FRAME_P state", H2_EV_RX_FRAME|H2_EV_RX_FHDR, h2c->conn); |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3435 | h2c->st0 = H2_CS_FRAME_P; |
Willy Tarreau | 54f46e5 | 2019-01-30 15:11:03 +0100 | [diff] [blame] | 3436 | |
| 3437 | /* check for minimum basic frame format validity */ |
| 3438 | ret = h2_frame_check(h2c->dft, 1, h2c->dsi, h2c->dfl, global.tune.bufsize); |
| 3439 | if (ret != H2_ERR_NO_ERROR) { |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3440 | TRACE_ERROR("received invalid H2 frame header", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 54f46e5 | 2019-01-30 15:11:03 +0100 | [diff] [blame] | 3441 | h2c_error(h2c, ret); |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3442 | if (!(h2c->flags & H2_CF_IS_BACK)) |
| 3443 | sess_log(h2c->conn->owner); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3444 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3445 | goto done; |
Willy Tarreau | 54f46e5 | 2019-01-30 15:11:03 +0100 | [diff] [blame] | 3446 | } |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 3447 | |
| 3448 | /* transition to HEADERS frame ends the keep-alive idle |
| 3449 | * timer and starts the http-request idle delay. |
| 3450 | */ |
| 3451 | if (hdr.ft == H2_FT_HEADERS) |
| 3452 | h2c->idle_start = now_ms; |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3453 | } |
| 3454 | |
Willy Tarreau | 9fd5aa8 | 2019-08-06 15:21:45 +0200 | [diff] [blame] | 3455 | /* Only H2_CS_FRAME_P, H2_CS_FRAME_A and H2_CS_FRAME_E here. |
| 3456 | * H2_CS_FRAME_P indicates an incomplete previous operation |
| 3457 | * (most often the first attempt) and requires some validity |
| 3458 | * checks for the frame and the current state. The two other |
| 3459 | * ones are set after completion (or abortion) and must skip |
| 3460 | * validity checks. |
| 3461 | */ |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 3462 | tmp_h2s = h2c_st_by_id(h2c, h2c->dsi); |
| 3463 | |
Willy Tarreau | 567beb8 | 2018-12-18 16:52:44 +0100 | [diff] [blame] | 3464 | if (tmp_h2s != h2s && h2s && h2s->cs && |
| 3465 | (b_data(&h2s->rxbuf) || |
Christopher Faulet | aade4ed | 2020-10-08 15:38:41 +0200 | [diff] [blame] | 3466 | h2c_read0_pending(h2c) || |
Willy Tarreau | 76c8382 | 2019-06-15 09:55:50 +0200 | [diff] [blame] | 3467 | h2s->st == H2_SS_CLOSED || |
Christopher Faulet | fa922f0 | 2019-05-07 10:55:17 +0200 | [diff] [blame] | 3468 | (h2s->flags & H2_SF_ES_RCVD) || |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 3469 | (h2s->endp->flags & (CS_EP_ERROR|CS_EP_ERR_PENDING|CS_EP_EOS)))) { |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 3470 | /* we may have to signal the upper layers */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3471 | TRACE_DEVEL("notifying stream before switching SID", H2_EV_RX_FRAME|H2_EV_STRM_WAKE, h2c->conn, h2s); |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 3472 | h2s->endp->flags |= CS_EP_RCV_MORE; |
Willy Tarreau | 7e09445 | 2018-12-19 18:08:52 +0100 | [diff] [blame] | 3473 | h2s_notify_recv(h2s); |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 3474 | } |
| 3475 | h2s = tmp_h2s; |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3476 | |
Willy Tarreau | 6386481 | 2019-08-07 14:25:20 +0200 | [diff] [blame] | 3477 | if (h2c->st0 == H2_CS_FRAME_E || |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3478 | (h2c->st0 == H2_CS_FRAME_P && !h2_frame_check_vs_state(h2c, h2s))) { |
| 3479 | TRACE_PROTO("stream error reported", H2_EV_RX_FRAME|H2_EV_PROTO_ERR, h2c->conn, h2s); |
Willy Tarreau | f182a9a | 2017-10-30 12:03:50 +0100 | [diff] [blame] | 3480 | goto strm_err; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3481 | } |
Willy Tarreau | c0da196 | 2017-10-30 18:38:00 +0100 | [diff] [blame] | 3482 | |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3483 | switch (h2c->dft) { |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 3484 | case H2_FT_SETTINGS: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3485 | if (h2c->st0 == H2_CS_FRAME_P) { |
| 3486 | TRACE_PROTO("receiving H2 SETTINGS frame", H2_EV_RX_FRAME|H2_EV_RX_SETTINGS, h2c->conn, h2s); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 3487 | ret = h2c_handle_settings(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3488 | } |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3489 | HA_ATOMIC_INC(&h2c->px_counters->settings_rcvd); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 3490 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3491 | if (h2c->st0 == H2_CS_FRAME_A) { |
| 3492 | TRACE_PROTO("sending H2 SETTINGS ACK frame", H2_EV_TX_FRAME|H2_EV_RX_SETTINGS, h2c->conn, h2s); |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 3493 | ret = h2c_ack_settings(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3494 | } |
Willy Tarreau | 3421aba | 2017-07-27 15:41:03 +0200 | [diff] [blame] | 3495 | break; |
| 3496 | |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 3497 | case H2_FT_PING: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3498 | if (h2c->st0 == H2_CS_FRAME_P) { |
| 3499 | TRACE_PROTO("receiving H2 PING frame", H2_EV_RX_FRAME|H2_EV_RX_PING, h2c->conn, h2s); |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 3500 | ret = h2c_handle_ping(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3501 | } |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 3502 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3503 | if (h2c->st0 == H2_CS_FRAME_A) { |
| 3504 | TRACE_PROTO("sending H2 PING ACK frame", H2_EV_TX_FRAME|H2_EV_TX_SETTINGS, h2c->conn, h2s); |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 3505 | ret = h2c_ack_ping(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3506 | } |
Willy Tarreau | cf68c78 | 2017-10-10 17:11:41 +0200 | [diff] [blame] | 3507 | break; |
| 3508 | |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 3509 | case H2_FT_WINDOW_UPDATE: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3510 | if (h2c->st0 == H2_CS_FRAME_P) { |
| 3511 | TRACE_PROTO("receiving H2 WINDOW_UPDATE frame", H2_EV_RX_FRAME|H2_EV_RX_WU, h2c->conn, h2s); |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 3512 | ret = h2c_handle_window_update(h2c, h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3513 | } |
Willy Tarreau | 26f9595 | 2017-07-27 17:18:30 +0200 | [diff] [blame] | 3514 | break; |
| 3515 | |
Willy Tarreau | 61290ec | 2017-10-17 08:19:21 +0200 | [diff] [blame] | 3516 | case H2_FT_CONTINUATION: |
Ilya Shipitsin | 46a030c | 2020-07-05 16:36:08 +0500 | [diff] [blame] | 3517 | /* RFC7540#6.10: CONTINUATION may only be preceded by |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 3518 | * a HEADERS/PUSH_PROMISE/CONTINUATION frame. These |
| 3519 | * frames' parsers consume all following CONTINUATION |
| 3520 | * frames so this one is out of sequence. |
Willy Tarreau | 61290ec | 2017-10-17 08:19:21 +0200 | [diff] [blame] | 3521 | */ |
Willy Tarreau | 5dd36ac | 2020-12-01 10:24:29 +0100 | [diff] [blame] | 3522 | TRACE_ERROR("received unexpected H2 CONTINUATION frame", H2_EV_RX_FRAME|H2_EV_RX_CONT|H2_EV_H2C_ERR, h2c->conn, h2s); |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 3523 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3524 | if (!(h2c->flags & H2_CF_IS_BACK)) |
| 3525 | sess_log(h2c->conn->owner); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3526 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3527 | goto done; |
Willy Tarreau | 61290ec | 2017-10-17 08:19:21 +0200 | [diff] [blame] | 3528 | |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 3529 | case H2_FT_HEADERS: |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 3530 | if (h2c->st0 == H2_CS_FRAME_P) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3531 | TRACE_PROTO("receiving H2 HEADERS frame", H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn, h2s); |
Willy Tarreau | c12f38f | 2018-10-08 14:53:27 +0200 | [diff] [blame] | 3532 | if (h2c->flags & H2_CF_IS_BACK) |
| 3533 | tmp_h2s = h2c_bck_handle_headers(h2c, h2s); |
| 3534 | else |
| 3535 | tmp_h2s = h2c_frt_handle_headers(h2c, h2s); |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 3536 | if (tmp_h2s) { |
| 3537 | h2s = tmp_h2s; |
| 3538 | ret = 1; |
| 3539 | } |
| 3540 | } |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3541 | HA_ATOMIC_INC(&h2c->px_counters->headers_rcvd); |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 3542 | break; |
| 3543 | |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3544 | case H2_FT_DATA: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3545 | if (h2c->st0 == H2_CS_FRAME_P) { |
| 3546 | TRACE_PROTO("receiving H2 DATA frame", H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
Christopher Faulet | fac0f8f | 2020-12-07 18:27:03 +0100 | [diff] [blame] | 3547 | ret = h2c_handle_data(h2c, h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3548 | } |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3549 | HA_ATOMIC_INC(&h2c->px_counters->data_rcvd); |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3550 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3551 | if (h2c->st0 == H2_CS_FRAME_A) { |
| 3552 | TRACE_PROTO("sending stream WINDOW_UPDATE frame", H2_EV_TX_FRAME|H2_EV_TX_WU, h2c->conn, h2s); |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3553 | ret = h2c_send_strm_wu(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3554 | } |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 3555 | break; |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 3556 | |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 3557 | case H2_FT_PRIORITY: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3558 | if (h2c->st0 == H2_CS_FRAME_P) { |
| 3559 | TRACE_PROTO("receiving H2 PRIORITY frame", H2_EV_RX_FRAME|H2_EV_RX_PRIO, h2c->conn, h2s); |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 3560 | ret = h2c_handle_priority(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3561 | } |
Willy Tarreau | 92153fc | 2017-12-03 19:46:19 +0100 | [diff] [blame] | 3562 | break; |
| 3563 | |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 3564 | case H2_FT_RST_STREAM: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3565 | if (h2c->st0 == H2_CS_FRAME_P) { |
| 3566 | TRACE_PROTO("receiving H2 RST_STREAM frame", H2_EV_RX_FRAME|H2_EV_RX_RST|H2_EV_RX_EOI, h2c->conn, h2s); |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 3567 | ret = h2c_handle_rst_stream(h2c, h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3568 | } |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3569 | HA_ATOMIC_INC(&h2c->px_counters->rst_stream_rcvd); |
Willy Tarreau | cd234e9 | 2017-08-18 10:59:39 +0200 | [diff] [blame] | 3570 | break; |
| 3571 | |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 3572 | case H2_FT_GOAWAY: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3573 | if (h2c->st0 == H2_CS_FRAME_P) { |
| 3574 | TRACE_PROTO("receiving H2 GOAWAY frame", H2_EV_RX_FRAME|H2_EV_RX_GOAWAY, h2c->conn, h2s); |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 3575 | ret = h2c_handle_goaway(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3576 | } |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 3577 | HA_ATOMIC_INC(&h2c->px_counters->goaway_rcvd); |
Willy Tarreau | e96b092 | 2017-10-30 00:28:29 +0100 | [diff] [blame] | 3578 | break; |
| 3579 | |
Willy Tarreau | 1c66198 | 2017-10-30 13:52:01 +0100 | [diff] [blame] | 3580 | /* implement all extra frame types here */ |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3581 | default: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3582 | TRACE_PROTO("receiving H2 ignored frame", H2_EV_RX_FRAME, h2c->conn, h2s); |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3583 | /* drop frames that we ignore. They may be larger than |
| 3584 | * the buffer so we drain all of their contents until |
| 3585 | * we reach the end. |
| 3586 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3587 | ret = MIN(b_data(&h2c->dbuf), h2c->dfl); |
| 3588 | b_del(&h2c->dbuf, ret); |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3589 | h2c->dfl -= ret; |
| 3590 | ret = h2c->dfl == 0; |
| 3591 | } |
| 3592 | |
Willy Tarreau | f182a9a | 2017-10-30 12:03:50 +0100 | [diff] [blame] | 3593 | strm_err: |
Willy Tarreau | a20a519 | 2017-12-27 11:02:06 +0100 | [diff] [blame] | 3594 | /* We may have to send an RST if not done yet */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3595 | if (h2s->st == H2_SS_ERROR) { |
| 3596 | TRACE_STATE("stream error, switching to FRAME_E", H2_EV_RX_FRAME|H2_EV_H2S_ERR, h2c->conn, h2s); |
Willy Tarreau | a20a519 | 2017-12-27 11:02:06 +0100 | [diff] [blame] | 3597 | h2c->st0 = H2_CS_FRAME_E; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3598 | } |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 3599 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3600 | if (h2c->st0 == H2_CS_FRAME_E) { |
| 3601 | TRACE_PROTO("sending H2 RST_STREAM frame", H2_EV_TX_FRAME|H2_EV_TX_RST|H2_EV_TX_EOI, h2c->conn, h2s); |
Willy Tarreau | a20a519 | 2017-12-27 11:02:06 +0100 | [diff] [blame] | 3602 | ret = h2c_send_rst_stream(h2c, h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3603 | } |
Willy Tarreau | 27a84c9 | 2017-10-17 08:10:17 +0200 | [diff] [blame] | 3604 | |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3605 | /* error or missing data condition met above ? */ |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3606 | if (ret <= 0) |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3607 | break; |
| 3608 | |
| 3609 | if (h2c->st0 != H2_CS_FRAME_H) { |
Willy Tarreau | bba7a4d | 2020-09-18 07:41:28 +0200 | [diff] [blame] | 3610 | if (h2c->dfl) |
| 3611 | TRACE_DEVEL("skipping remaining frame payload", H2_EV_RX_FRAME, h2c->conn, h2s); |
Christopher Faulet | 5112a60 | 2019-09-26 16:38:28 +0200 | [diff] [blame] | 3612 | ret = MIN(b_data(&h2c->dbuf), h2c->dfl); |
| 3613 | b_del(&h2c->dbuf, ret); |
| 3614 | h2c->dfl -= ret; |
| 3615 | if (!h2c->dfl) { |
| 3616 | TRACE_STATE("switching to FRAME_H", H2_EV_RX_FRAME|H2_EV_RX_FHDR, h2c->conn); |
| 3617 | h2c->st0 = H2_CS_FRAME_H; |
| 3618 | h2c->dsi = -1; |
| 3619 | } |
Willy Tarreau | 7e98c05 | 2017-10-10 15:56:59 +0200 | [diff] [blame] | 3620 | } |
| 3621 | } |
Willy Tarreau | 52eed75 | 2017-09-22 15:05:09 +0200 | [diff] [blame] | 3622 | |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 3623 | if (h2c->rcvd_c > 0 && |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3624 | !(h2c->flags & (H2_CF_MUX_MFULL | H2_CF_DEM_MBUSY | H2_CF_DEM_MROOM))) { |
| 3625 | TRACE_PROTO("sending H2 WINDOW_UPDATE frame", H2_EV_TX_FRAME|H2_EV_TX_WU, h2c->conn); |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 3626 | h2c_send_conn_wu(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3627 | } |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 3628 | |
Willy Tarreau | 3d4631f | 2021-01-20 10:53:13 +0100 | [diff] [blame] | 3629 | done: |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3630 | if (h2c->st0 >= H2_CS_ERROR || (h2c->flags & H2_CF_DEM_SHORT_READ)) { |
| 3631 | if (h2c->flags & H2_CF_RCVD_SHUT) |
| 3632 | h2c->flags |= H2_CF_END_REACHED; |
| 3633 | } |
| 3634 | |
Willy Tarreau | 567beb8 | 2018-12-18 16:52:44 +0100 | [diff] [blame] | 3635 | if (h2s && h2s->cs && |
| 3636 | (b_data(&h2s->rxbuf) || |
Christopher Faulet | aade4ed | 2020-10-08 15:38:41 +0200 | [diff] [blame] | 3637 | h2c_read0_pending(h2c) || |
Willy Tarreau | 76c8382 | 2019-06-15 09:55:50 +0200 | [diff] [blame] | 3638 | h2s->st == H2_SS_CLOSED || |
Christopher Faulet | fa922f0 | 2019-05-07 10:55:17 +0200 | [diff] [blame] | 3639 | (h2s->flags & H2_SF_ES_RCVD) || |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 3640 | (h2s->endp->flags & (CS_EP_ERROR|CS_EP_ERR_PENDING|CS_EP_EOS)))) { |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 3641 | /* we may have to signal the upper layers */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3642 | TRACE_DEVEL("notifying stream before switching SID", H2_EV_RX_FRAME|H2_EV_H2S_WAKE, h2c->conn, h2s); |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 3643 | h2s->endp->flags |= CS_EP_RCV_MORE; |
Willy Tarreau | 7e09445 | 2018-12-19 18:08:52 +0100 | [diff] [blame] | 3644 | h2s_notify_recv(h2s); |
Willy Tarreau | 2a761dc | 2018-02-26 18:50:57 +0100 | [diff] [blame] | 3645 | } |
Willy Tarreau | 1ed87b7 | 2018-11-25 08:45:16 +0100 | [diff] [blame] | 3646 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3647 | if (old_iw != h2c->miw) { |
| 3648 | TRACE_STATE("notifying streams about SFCTL increase", H2_EV_RX_FRAME|H2_EV_H2S_WAKE, h2c->conn); |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 3649 | h2c_unblock_sfctl(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3650 | } |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 3651 | |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 3652 | h2c_restart_reading(h2c, 0); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3653 | out: |
| 3654 | TRACE_LEAVE(H2_EV_H2C_WAKE, h2c->conn); |
Willy Tarreau | 3d4631f | 2021-01-20 10:53:13 +0100 | [diff] [blame] | 3655 | return; |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3656 | } |
| 3657 | |
Willy Tarreau | 989539b | 2020-01-10 17:01:29 +0100 | [diff] [blame] | 3658 | /* resume each h2s eligible for sending in list head <head> */ |
| 3659 | static void h2_resume_each_sending_h2s(struct h2c *h2c, struct list *head) |
| 3660 | { |
| 3661 | struct h2s *h2s, *h2s_back; |
| 3662 | |
| 3663 | TRACE_ENTER(H2_EV_H2C_SEND|H2_EV_H2S_WAKE, h2c->conn); |
| 3664 | |
| 3665 | list_for_each_entry_safe(h2s, h2s_back, head, list) { |
| 3666 | if (h2c->mws <= 0 || |
| 3667 | h2c->flags & H2_CF_MUX_BLOCK_ANY || |
| 3668 | h2c->st0 >= H2_CS_ERROR) |
| 3669 | break; |
| 3670 | |
| 3671 | h2s->flags &= ~H2_SF_BLK_ANY; |
Willy Tarreau | 70c5b0e | 2020-01-10 18:20:15 +0100 | [diff] [blame] | 3672 | |
Willy Tarreau | d946416 | 2020-01-10 18:25:07 +0100 | [diff] [blame] | 3673 | if (h2s->flags & H2_SF_NOTIFIED) |
Willy Tarreau | 70c5b0e | 2020-01-10 18:20:15 +0100 | [diff] [blame] | 3674 | continue; |
| 3675 | |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 3676 | /* If the sender changed his mind and unsubscribed, let's just |
| 3677 | * remove the stream from the send_list. |
Willy Tarreau | 989539b | 2020-01-10 17:01:29 +0100 | [diff] [blame] | 3678 | */ |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 3679 | if (!(h2s->flags & (H2_SF_WANT_SHUTR|H2_SF_WANT_SHUTW)) && |
| 3680 | (!h2s->subs || !(h2s->subs->events & SUB_RETRY_SEND))) { |
Willy Tarreau | 989539b | 2020-01-10 17:01:29 +0100 | [diff] [blame] | 3681 | LIST_DEL_INIT(&h2s->list); |
| 3682 | continue; |
| 3683 | } |
| 3684 | |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 3685 | if (h2s->subs && h2s->subs->events & SUB_RETRY_SEND) { |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 3686 | h2s->flags |= H2_SF_NOTIFIED; |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 3687 | tasklet_wakeup(h2s->subs->tasklet); |
| 3688 | h2s->subs->events &= ~SUB_RETRY_SEND; |
| 3689 | if (!h2s->subs->events) |
| 3690 | h2s->subs = NULL; |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 3691 | } |
| 3692 | else if (h2s->flags & (H2_SF_WANT_SHUTR|H2_SF_WANT_SHUTW)) { |
| 3693 | tasklet_wakeup(h2s->shut_tl); |
| 3694 | } |
Willy Tarreau | 989539b | 2020-01-10 17:01:29 +0100 | [diff] [blame] | 3695 | } |
| 3696 | |
| 3697 | TRACE_LEAVE(H2_EV_H2C_SEND|H2_EV_H2S_WAKE, h2c->conn); |
| 3698 | } |
| 3699 | |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3700 | /* process Tx frames from streams to be multiplexed. Returns > 0 if it reached |
| 3701 | * the end. |
| 3702 | */ |
| 3703 | static int h2_process_mux(struct h2c *h2c) |
| 3704 | { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3705 | TRACE_ENTER(H2_EV_H2C_WAKE, h2c->conn); |
| 3706 | |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 3707 | if (unlikely(h2c->st0 < H2_CS_FRAME_H)) { |
| 3708 | if (unlikely(h2c->st0 == H2_CS_PREFACE && (h2c->flags & H2_CF_IS_BACK))) { |
| 3709 | if (unlikely(h2c_bck_send_preface(h2c) <= 0)) { |
| 3710 | /* RFC7540#3.5: a GOAWAY frame MAY be omitted */ |
Willy Tarreau | 9364a5f | 2019-10-23 11:06:35 +0200 | [diff] [blame] | 3711 | if (h2c->st0 == H2_CS_ERROR) |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 3712 | h2c->st0 = H2_CS_ERROR2; |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 3713 | goto fail; |
| 3714 | } |
| 3715 | h2c->st0 = H2_CS_SETTINGS1; |
| 3716 | } |
| 3717 | /* need to wait for the other side */ |
Willy Tarreau | 75a930a | 2018-12-12 08:03:58 +0100 | [diff] [blame] | 3718 | if (h2c->st0 < H2_CS_FRAME_H) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3719 | goto done; |
Willy Tarreau | 01b4482 | 2018-10-03 14:26:37 +0200 | [diff] [blame] | 3720 | } |
| 3721 | |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 3722 | /* start by sending possibly pending window updates */ |
Willy Tarreau | e74679a | 2019-08-06 15:39:32 +0200 | [diff] [blame] | 3723 | if (h2c->rcvd_s > 0 && |
| 3724 | !(h2c->flags & (H2_CF_MUX_MFULL | H2_CF_MUX_MALLOC)) && |
| 3725 | h2c_send_strm_wu(h2c) < 0) |
| 3726 | goto fail; |
| 3727 | |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 3728 | if (h2c->rcvd_c > 0 && |
| 3729 | !(h2c->flags & (H2_CF_MUX_MFULL | H2_CF_MUX_MALLOC)) && |
| 3730 | h2c_send_conn_wu(h2c) < 0) |
| 3731 | goto fail; |
| 3732 | |
Willy Tarreau | bacdf5a | 2017-10-17 10:57:04 +0200 | [diff] [blame] | 3733 | /* First we always process the flow control list because the streams |
| 3734 | * waiting there were already elected for immediate emission but were |
| 3735 | * blocked just on this. |
| 3736 | */ |
Willy Tarreau | 989539b | 2020-01-10 17:01:29 +0100 | [diff] [blame] | 3737 | h2_resume_each_sending_h2s(h2c, &h2c->fctl_list); |
| 3738 | h2_resume_each_sending_h2s(h2c, &h2c->send_list); |
Willy Tarreau | bacdf5a | 2017-10-17 10:57:04 +0200 | [diff] [blame] | 3739 | |
Willy Tarreau | cc0b8c3 | 2017-10-26 16:55:59 +0200 | [diff] [blame] | 3740 | fail: |
Willy Tarreau | 3eabe9b | 2017-11-07 11:03:01 +0100 | [diff] [blame] | 3741 | if (unlikely(h2c->st0 >= H2_CS_ERROR)) { |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 3742 | if (h2c->st0 == H2_CS_ERROR) { |
| 3743 | if (h2c->max_id >= 0) { |
| 3744 | h2c_send_goaway_error(h2c, NULL); |
| 3745 | if (h2c->flags & H2_CF_MUX_BLOCK_ANY) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3746 | goto out0; |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 3747 | } |
| 3748 | |
| 3749 | h2c->st0 = H2_CS_ERROR2; // sent (or failed hard) ! |
| 3750 | } |
Willy Tarreau | 081d472 | 2017-05-16 21:51:05 +0200 | [diff] [blame] | 3751 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3752 | done: |
| 3753 | TRACE_LEAVE(H2_EV_H2C_WAKE, h2c->conn); |
| 3754 | return 1; |
| 3755 | out0: |
| 3756 | TRACE_DEVEL("leaving in blocked situation", H2_EV_H2C_WAKE, h2c->conn); |
| 3757 | return 0; |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3758 | } |
| 3759 | |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 3760 | |
Willy Tarreau | 479998a | 2018-11-18 06:30:59 +0100 | [diff] [blame] | 3761 | /* Attempt to read data, and subscribe if none available. |
| 3762 | * The function returns 1 if data has been received, otherwise zero. |
| 3763 | */ |
Olivier Houchard | d4dd22d | 2018-08-17 18:39:46 +0200 | [diff] [blame] | 3764 | static int h2_recv(struct h2c *h2c) |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 3765 | { |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 3766 | struct connection *conn = h2c->conn; |
Willy Tarreau | 35dbd5d | 2017-09-22 09:13:49 +0200 | [diff] [blame] | 3767 | struct buffer *buf; |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3768 | int max; |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 3769 | size_t ret; |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3770 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3771 | TRACE_ENTER(H2_EV_H2C_RECV, h2c->conn); |
| 3772 | |
| 3773 | if (h2c->wait_event.events & SUB_RETRY_RECV) { |
| 3774 | TRACE_DEVEL("leaving on sub_recv", H2_EV_H2C_RECV, h2c->conn); |
Olivier Houchard | 81a15af | 2018-10-19 17:26:49 +0200 | [diff] [blame] | 3775 | return (b_data(&h2c->dbuf)); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3776 | } |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 3777 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3778 | if (!h2_recv_allowed(h2c)) { |
| 3779 | TRACE_DEVEL("leaving on !recv_allowed", H2_EV_H2C_RECV, h2c->conn); |
Olivier Houchard | 81a15af | 2018-10-19 17:26:49 +0200 | [diff] [blame] | 3780 | return 1; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3781 | } |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3782 | |
Willy Tarreau | 44e973f | 2018-03-01 17:49:30 +0100 | [diff] [blame] | 3783 | buf = h2_get_buf(h2c, &h2c->dbuf); |
Willy Tarreau | 1b62c5c | 2017-09-25 11:55:01 +0200 | [diff] [blame] | 3784 | if (!buf) { |
| 3785 | h2c->flags |= H2_CF_DEM_DALLOC; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3786 | TRACE_DEVEL("leaving on !alloc", H2_EV_H2C_RECV, h2c->conn); |
Olivier Houchard | d4dd22d | 2018-08-17 18:39:46 +0200 | [diff] [blame] | 3787 | return 0; |
Willy Tarreau | 1b62c5c | 2017-09-25 11:55:01 +0200 | [diff] [blame] | 3788 | } |
Willy Tarreau | 35dbd5d | 2017-09-22 09:13:49 +0200 | [diff] [blame] | 3789 | |
Willy Tarreau | 3d4631f | 2021-01-20 10:53:13 +0100 | [diff] [blame] | 3790 | if (h2c->flags & H2_CF_RCVD_SHUT) { |
| 3791 | TRACE_DEVEL("leaving on rcvd_shut", H2_EV_H2C_RECV, h2c->conn); |
Willy Tarreau | 3a8bbcc | 2021-11-19 11:41:10 +0100 | [diff] [blame] | 3792 | return 1; |
Willy Tarreau | 3d4631f | 2021-01-20 10:53:13 +0100 | [diff] [blame] | 3793 | } |
| 3794 | |
Willy Tarreau | 4d7a884 | 2019-07-31 16:00:48 +0200 | [diff] [blame] | 3795 | if (!b_data(buf)) { |
| 3796 | /* try to pre-align the buffer like the |
| 3797 | * rxbufs will be to optimize memory copies. We'll make |
| 3798 | * sure that the frame header lands at the end of the |
| 3799 | * HTX block to alias it upon recv. We cannot use the |
| 3800 | * head because rcv_buf() will realign the buffer if |
| 3801 | * it's empty. Thus we cheat and pretend we already |
| 3802 | * have a few bytes there. |
| 3803 | */ |
| 3804 | max = buf_room_for_htx_data(buf) + 9; |
| 3805 | buf->head = sizeof(struct htx) - 9; |
| 3806 | } |
| 3807 | else |
| 3808 | max = b_room(buf); |
Willy Tarreau | 2a59e87 | 2018-12-12 08:23:47 +0100 | [diff] [blame] | 3809 | |
Willy Tarreau | 4d7a884 | 2019-07-31 16:00:48 +0200 | [diff] [blame] | 3810 | ret = max ? conn->xprt->rcv_buf(conn, conn->xprt_ctx, buf, max, 0) : 0; |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3811 | |
Christopher Faulet | de9d605 | 2021-04-23 12:25:18 +0200 | [diff] [blame] | 3812 | if (max && !ret && h2_recv_allowed(h2c)) { |
| 3813 | TRACE_DATA("failed to receive data, subscribing", H2_EV_H2C_RECV, h2c->conn); |
| 3814 | conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_RECV, &h2c->wait_event); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3815 | } else if (ret) { |
Willy Tarreau | 022e5e5 | 2020-09-10 09:33:15 +0200 | [diff] [blame] | 3816 | TRACE_DATA("received data", H2_EV_H2C_RECV, h2c->conn, 0, 0, (void*)(long)ret); |
Christopher Faulet | b5f7b52 | 2021-07-26 12:06:53 +0200 | [diff] [blame] | 3817 | h2c->flags &= ~H2_CF_DEM_SHORT_READ; |
| 3818 | } |
Olivier Houchard | 81a15af | 2018-10-19 17:26:49 +0200 | [diff] [blame] | 3819 | |
Christopher Faulet | de9d605 | 2021-04-23 12:25:18 +0200 | [diff] [blame] | 3820 | if (conn_xprt_read0_pending(h2c->conn)) { |
| 3821 | TRACE_DATA("received read0", H2_EV_H2C_RECV, h2c->conn); |
| 3822 | h2c->flags |= H2_CF_RCVD_SHUT; |
| 3823 | } |
| 3824 | |
Olivier Houchard | a1411e6 | 2018-08-17 18:42:48 +0200 | [diff] [blame] | 3825 | if (!b_data(buf)) { |
Willy Tarreau | 44e973f | 2018-03-01 17:49:30 +0100 | [diff] [blame] | 3826 | h2_release_buf(h2c, &h2c->dbuf); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3827 | TRACE_LEAVE(H2_EV_H2C_RECV, h2c->conn); |
Olivier Houchard | 4667773 | 2018-11-29 17:06:17 +0100 | [diff] [blame] | 3828 | return (conn->flags & CO_FL_ERROR || conn_xprt_read0_pending(conn)); |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3829 | } |
| 3830 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3831 | if (b_data(buf) == buf->size) { |
Willy Tarreau | fbe3b4f | 2017-10-09 15:14:19 +0200 | [diff] [blame] | 3832 | h2c->flags |= H2_CF_DEM_DFULL; |
Willy Tarreau | 35fb846 | 2019-10-02 11:05:46 +0200 | [diff] [blame] | 3833 | TRACE_STATE("demux buffer full", H2_EV_H2C_RECV|H2_EV_H2C_BLK, h2c->conn); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3834 | } |
| 3835 | |
| 3836 | TRACE_LEAVE(H2_EV_H2C_RECV, h2c->conn); |
Willy Tarreau | 4d7a884 | 2019-07-31 16:00:48 +0200 | [diff] [blame] | 3837 | return !!ret || (conn->flags & CO_FL_ERROR) || conn_xprt_read0_pending(conn); |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 3838 | } |
| 3839 | |
Willy Tarreau | 479998a | 2018-11-18 06:30:59 +0100 | [diff] [blame] | 3840 | /* Try to send data if possible. |
| 3841 | * The function returns 1 if data have been sent, otherwise zero. |
| 3842 | */ |
Olivier Houchard | d4dd22d | 2018-08-17 18:39:46 +0200 | [diff] [blame] | 3843 | static int h2_send(struct h2c *h2c) |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 3844 | { |
Olivier Houchard | 29fb89d | 2018-08-02 18:56:36 +0200 | [diff] [blame] | 3845 | struct connection *conn = h2c->conn; |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3846 | int done; |
Olivier Houchard | d4dd22d | 2018-08-17 18:39:46 +0200 | [diff] [blame] | 3847 | int sent = 0; |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3848 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3849 | TRACE_ENTER(H2_EV_H2C_SEND, h2c->conn); |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3850 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3851 | if (conn->flags & CO_FL_ERROR) { |
| 3852 | TRACE_DEVEL("leaving on error", H2_EV_H2C_SEND, h2c->conn); |
| 3853 | return 1; |
| 3854 | } |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 3855 | |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 3856 | if (conn->flags & CO_FL_WAIT_XPRT) { |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3857 | /* a handshake was requested */ |
Olivier Houchard | d4dd22d | 2018-08-17 18:39:46 +0200 | [diff] [blame] | 3858 | goto schedule; |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3859 | } |
| 3860 | |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3861 | /* This loop is quite simple : it tries to fill as much as it can from |
| 3862 | * pending streams into the existing buffer until it's reportedly full |
| 3863 | * or the end of send requests is reached. Then it tries to send this |
| 3864 | * buffer's contents out, marks it not full if at least one byte could |
| 3865 | * be sent, and tries again. |
| 3866 | * |
| 3867 | * The snd_buf() function normally takes a "flags" argument which may |
| 3868 | * be made of a combination of CO_SFL_MSG_MORE to indicate that more |
| 3869 | * data immediately comes and CO_SFL_STREAMER to indicate that the |
| 3870 | * connection is streaming lots of data (used to increase TLS record |
| 3871 | * size at the expense of latency). The former can be sent any time |
| 3872 | * there's a buffer full flag, as it indicates at least one stream |
| 3873 | * attempted to send and failed so there are pending data. An |
| 3874 | * alternative would be to set it as long as there's an active stream |
| 3875 | * but that would be problematic for ACKs until we have an absolute |
| 3876 | * guarantee that all waiters have at least one byte to send. The |
| 3877 | * latter should possibly not be set for now. |
| 3878 | */ |
| 3879 | |
| 3880 | done = 0; |
| 3881 | while (!done) { |
| 3882 | unsigned int flags = 0; |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 3883 | unsigned int released = 0; |
| 3884 | struct buffer *buf; |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3885 | |
| 3886 | /* fill as much as we can into the current buffer */ |
| 3887 | while (((h2c->flags & (H2_CF_MUX_MFULL|H2_CF_MUX_MALLOC)) == 0) && !done) |
| 3888 | done = h2_process_mux(h2c); |
| 3889 | |
Olivier Houchard | 2b09443 | 2019-01-29 18:28:36 +0100 | [diff] [blame] | 3890 | if (h2c->flags & H2_CF_MUX_MALLOC) |
Willy Tarreau | 7f1265a | 2019-05-29 17:36:37 +0200 | [diff] [blame] | 3891 | done = 1; // we won't go further without extra buffers |
Olivier Houchard | 2b09443 | 2019-01-29 18:28:36 +0100 | [diff] [blame] | 3892 | |
Christopher Faulet | 9a3d3fc | 2020-10-22 16:24:58 +0200 | [diff] [blame] | 3893 | if ((conn->flags & (CO_FL_SOCK_WR_SH|CO_FL_ERROR)) || |
Willy Tarreau | e6dc7a0 | 2021-10-21 17:30:06 +0200 | [diff] [blame] | 3894 | (h2c->flags & H2_CF_GOAWAY_FAILED)) |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3895 | break; |
| 3896 | |
| 3897 | if (h2c->flags & (H2_CF_MUX_MFULL | H2_CF_DEM_MBUSY | H2_CF_DEM_MROOM)) |
| 3898 | flags |= CO_SFL_MSG_MORE; |
| 3899 | |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 3900 | for (buf = br_head(h2c->mbuf); b_size(buf); buf = br_del_head(h2c->mbuf)) { |
| 3901 | if (b_data(buf)) { |
| 3902 | int ret = conn->xprt->snd_buf(conn, conn->xprt_ctx, buf, b_data(buf), flags); |
Willy Tarreau | 7f1265a | 2019-05-29 17:36:37 +0200 | [diff] [blame] | 3903 | if (!ret) { |
| 3904 | done = 1; |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 3905 | break; |
Willy Tarreau | 7f1265a | 2019-05-29 17:36:37 +0200 | [diff] [blame] | 3906 | } |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 3907 | sent = 1; |
Willy Tarreau | 022e5e5 | 2020-09-10 09:33:15 +0200 | [diff] [blame] | 3908 | TRACE_DATA("sent data", H2_EV_H2C_SEND, h2c->conn, 0, buf, (void*)(long)ret); |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 3909 | b_del(buf, ret); |
Willy Tarreau | 7f1265a | 2019-05-29 17:36:37 +0200 | [diff] [blame] | 3910 | if (b_data(buf)) { |
| 3911 | done = 1; |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 3912 | break; |
Willy Tarreau | 7f1265a | 2019-05-29 17:36:37 +0200 | [diff] [blame] | 3913 | } |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 3914 | } |
| 3915 | b_free(buf); |
| 3916 | released++; |
Willy Tarreau | 787db9a | 2018-06-14 18:31:46 +0200 | [diff] [blame] | 3917 | } |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3918 | |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 3919 | if (released) |
Willy Tarreau | 4d77bbf | 2021-02-20 12:02:46 +0100 | [diff] [blame] | 3920 | offer_buffers(NULL, released); |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 3921 | |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3922 | /* wrote at least one byte, the buffer is not full anymore */ |
Christopher Faulet | 69fe5ce | 2019-10-24 10:31:01 +0200 | [diff] [blame] | 3923 | if (sent) |
| 3924 | h2c->flags &= ~(H2_CF_MUX_MFULL | H2_CF_DEM_MROOM); |
Willy Tarreau | bc93393 | 2017-10-09 16:21:43 +0200 | [diff] [blame] | 3925 | } |
| 3926 | |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3927 | if (conn->flags & CO_FL_SOCK_WR_SH) { |
| 3928 | /* output closed, nothing to send, clear the buffer to release it */ |
Willy Tarreau | 5133096 | 2019-05-26 09:38:07 +0200 | [diff] [blame] | 3929 | b_reset(br_tail(h2c->mbuf)); |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 3930 | } |
Olivier Houchard | 6ff2039 | 2018-07-17 18:46:31 +0200 | [diff] [blame] | 3931 | /* We're not full anymore, so we can wake any task that are waiting |
| 3932 | * for us. |
| 3933 | */ |
Willy Tarreau | 989539b | 2020-01-10 17:01:29 +0100 | [diff] [blame] | 3934 | if (!(h2c->flags & (H2_CF_MUX_MFULL | H2_CF_DEM_MROOM)) && h2c->st0 >= H2_CS_FRAME_H) |
| 3935 | h2_resume_each_sending_h2s(h2c, &h2c->send_list); |
Olivier Houchard | d360ac6 | 2019-03-22 17:37:16 +0100 | [diff] [blame] | 3936 | |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 3937 | /* We're done, no more to send */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3938 | if (!br_data(h2c->mbuf)) { |
| 3939 | TRACE_DEVEL("leaving with everything sent", H2_EV_H2C_SEND, h2c->conn); |
Olivier Houchard | d4dd22d | 2018-08-17 18:39:46 +0200 | [diff] [blame] | 3940 | return sent; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3941 | } |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 3942 | schedule: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3943 | if (!(conn->flags & CO_FL_ERROR) && !(h2c->wait_event.events & SUB_RETRY_SEND)) { |
| 3944 | TRACE_STATE("more data to send, subscribing", H2_EV_H2C_SEND, h2c->conn); |
Olivier Houchard | e179d0e | 2019-03-21 18:27:17 +0100 | [diff] [blame] | 3945 | conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_SEND, &h2c->wait_event); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3946 | } |
Willy Tarreau | 7f1265a | 2019-05-29 17:36:37 +0200 | [diff] [blame] | 3947 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3948 | TRACE_DEVEL("leaving with some data left to send", H2_EV_H2C_SEND, h2c->conn); |
Olivier Houchard | d4dd22d | 2018-08-17 18:39:46 +0200 | [diff] [blame] | 3949 | return sent; |
Olivier Houchard | 29fb89d | 2018-08-02 18:56:36 +0200 | [diff] [blame] | 3950 | } |
| 3951 | |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 3952 | /* this is the tasklet referenced in h2c->wait_event.tasklet */ |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 3953 | struct task *h2_io_cb(struct task *t, void *ctx, unsigned int state) |
Olivier Houchard | 29fb89d | 2018-08-02 18:56:36 +0200 | [diff] [blame] | 3954 | { |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 3955 | struct connection *conn; |
| 3956 | struct tasklet *tl = (struct tasklet *)t; |
| 3957 | int conn_in_list; |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 3958 | struct h2c *h2c = ctx; |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 3959 | int ret = 0; |
Olivier Houchard | 29fb89d | 2018-08-02 18:56:36 +0200 | [diff] [blame] | 3960 | |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 3961 | if (state & TASK_F_USR1) { |
| 3962 | /* the tasklet was idling on an idle connection, it might have |
| 3963 | * been stolen, let's be careful! |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 3964 | */ |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 3965 | HA_SPIN_LOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
| 3966 | if (t->context == NULL) { |
| 3967 | /* The connection has been taken over by another thread, |
| 3968 | * we're no longer responsible for it, so just free the |
| 3969 | * tasklet, and do nothing. |
| 3970 | */ |
| 3971 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
| 3972 | tasklet_free(tl); |
Willy Tarreau | 7416314 | 2021-03-13 11:30:19 +0100 | [diff] [blame] | 3973 | t = NULL; |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 3974 | goto leave; |
| 3975 | } |
| 3976 | conn = h2c->conn; |
| 3977 | TRACE_ENTER(H2_EV_H2C_WAKE, conn); |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 3978 | |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 3979 | conn_in_list = conn->flags & CO_FL_LIST_MASK; |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 3980 | |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 3981 | /* Remove the connection from the list, to be sure nobody attempts |
| 3982 | * to use it while we handle the I/O events |
| 3983 | */ |
| 3984 | if (conn_in_list) |
| 3985 | conn_delete_from_tree(&conn->hash_node->node); |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 3986 | |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 3987 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
| 3988 | } else { |
| 3989 | /* we're certain the connection was not in an idle list */ |
| 3990 | conn = h2c->conn; |
| 3991 | TRACE_ENTER(H2_EV_H2C_WAKE, conn); |
| 3992 | conn_in_list = 0; |
| 3993 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 3994 | |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 3995 | if (!(h2c->wait_event.events & SUB_RETRY_SEND)) |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 3996 | ret = h2_send(h2c); |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 3997 | if (!(h2c->wait_event.events & SUB_RETRY_RECV)) |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 3998 | ret |= h2_recv(h2c); |
Willy Tarreau | cef5c8e | 2018-12-18 10:29:54 +0100 | [diff] [blame] | 3999 | if (ret || b_data(&h2c->dbuf)) |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 4000 | ret = h2_process(h2c); |
| 4001 | |
| 4002 | /* If we were in an idle list, we want to add it back into it, |
| 4003 | * unless h2_process() returned -1, which mean it has destroyed |
| 4004 | * the connection (testing !ret is enough, if h2_process() wasn't |
| 4005 | * called then ret will be 0 anyway. |
| 4006 | */ |
Willy Tarreau | 7416314 | 2021-03-13 11:30:19 +0100 | [diff] [blame] | 4007 | if (ret < 0) |
| 4008 | t = NULL; |
| 4009 | |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 4010 | if (!ret && conn_in_list) { |
| 4011 | struct server *srv = objt_server(conn->target); |
| 4012 | |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 4013 | HA_SPIN_LOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 4014 | if (conn_in_list == CO_FL_SAFE_LIST) |
Willy Tarreau | 430bf4a | 2021-03-04 09:45:32 +0100 | [diff] [blame] | 4015 | ebmb_insert(&srv->per_thr[tid].safe_conns, &conn->hash_node->node, sizeof(conn->hash_node->hash)); |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 4016 | else |
Willy Tarreau | 430bf4a | 2021-03-04 09:45:32 +0100 | [diff] [blame] | 4017 | ebmb_insert(&srv->per_thr[tid].idle_conns, &conn->hash_node->node, sizeof(conn->hash_node->hash)); |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 4018 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 4019 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4020 | |
Willy Tarreau | 3846877 | 2020-06-28 00:31:13 +0200 | [diff] [blame] | 4021 | leave: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4022 | TRACE_LEAVE(H2_EV_H2C_WAKE); |
Willy Tarreau | 7416314 | 2021-03-13 11:30:19 +0100 | [diff] [blame] | 4023 | return t; |
Willy Tarreau | fbe3b4f | 2017-10-09 15:14:19 +0200 | [diff] [blame] | 4024 | } |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 4025 | |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4026 | /* callback called on any event by the connection handler. |
| 4027 | * It applies changes and returns zero, or < 0 if it wants immediate |
| 4028 | * destruction of the connection (which normally doesn not happen in h2). |
| 4029 | */ |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 4030 | static int h2_process(struct h2c *h2c) |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4031 | { |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 4032 | struct connection *conn = h2c->conn; |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 4033 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4034 | TRACE_ENTER(H2_EV_H2C_WAKE, conn); |
| 4035 | |
Willy Tarreau | f096122 | 2021-02-05 11:41:46 +0100 | [diff] [blame] | 4036 | if (!(h2c->flags & H2_CF_DEM_BLOCK_ANY) && |
| 4037 | (b_data(&h2c->dbuf) || (h2c->flags & H2_CF_RCVD_SHUT))) { |
Willy Tarreau | d13bf27 | 2017-12-14 10:34:52 +0100 | [diff] [blame] | 4038 | h2_process_demux(h2c); |
| 4039 | |
| 4040 | if (h2c->st0 >= H2_CS_ERROR || conn->flags & CO_FL_ERROR) |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 4041 | b_reset(&h2c->dbuf); |
Willy Tarreau | d13bf27 | 2017-12-14 10:34:52 +0100 | [diff] [blame] | 4042 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 4043 | if (!b_full(&h2c->dbuf)) |
Willy Tarreau | d13bf27 | 2017-12-14 10:34:52 +0100 | [diff] [blame] | 4044 | h2c->flags &= ~H2_CF_DEM_DFULL; |
| 4045 | } |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 4046 | h2_send(h2c); |
Willy Tarreau | d13bf27 | 2017-12-14 10:34:52 +0100 | [diff] [blame] | 4047 | |
Christopher Faulet | dfd10ab | 2021-10-06 14:24:19 +0200 | [diff] [blame] | 4048 | if (unlikely(h2c->proxy->flags & (PR_FL_DISABLED|PR_FL_STOPPED)) && !(h2c->flags & H2_CF_IS_BACK)) { |
Remi Tricot-Le Breton | b5d968d | 2022-04-08 18:04:18 +0200 | [diff] [blame] | 4049 | int send_goaway = 1; |
| 4050 | /* If a close-spread-time option is set, we want to avoid |
| 4051 | * closing all the active HTTP2 connections at once so we add a |
| 4052 | * random factor that will spread the closing. |
| 4053 | */ |
| 4054 | if (tick_isset(global.close_spread_end)) { |
| 4055 | int remaining_window = tick_remain(now_ms, global.close_spread_end); |
| 4056 | if (remaining_window) { |
| 4057 | /* This should increase the closing rate the |
| 4058 | * further along the window we are. */ |
| 4059 | send_goaway = (remaining_window <= statistical_prng_range(global.close_spread_time)); |
| 4060 | } |
| 4061 | } |
Remi Tricot-Le Breton | 4d7fdc6 | 2022-04-26 15:17:18 +0200 | [diff] [blame^] | 4062 | else if (global.tune.options & GTUNE_DISABLE_ACTIVE_CLOSE) |
| 4063 | send_goaway = 0; /* let the client close his connection himself */ |
Willy Tarreau | 8ec1406 | 2017-12-30 18:08:13 +0100 | [diff] [blame] | 4064 | /* frontend is stopping, reload likely in progress, let's try |
| 4065 | * to announce a graceful shutdown if not yet done. We don't |
| 4066 | * care if it fails, it will be tried again later. |
| 4067 | */ |
Remi Tricot-Le Breton | b5d968d | 2022-04-08 18:04:18 +0200 | [diff] [blame] | 4068 | if (send_goaway) { |
| 4069 | TRACE_STATE("proxy stopped, sending GOAWAY", H2_EV_H2C_WAKE|H2_EV_TX_FRAME, conn); |
| 4070 | if (!(h2c->flags & (H2_CF_GOAWAY_SENT|H2_CF_GOAWAY_FAILED))) { |
| 4071 | if (h2c->last_sid < 0) |
| 4072 | h2c->last_sid = (1U << 31) - 1; |
| 4073 | h2c_send_goaway_error(h2c, NULL); |
| 4074 | } |
Willy Tarreau | 8ec1406 | 2017-12-30 18:08:13 +0100 | [diff] [blame] | 4075 | } |
| 4076 | } |
| 4077 | |
Olivier Houchard | 7fc96d5 | 2017-11-23 18:25:47 +0100 | [diff] [blame] | 4078 | /* |
Olivier Houchard | 6fa63d9 | 2017-11-27 18:41:32 +0100 | [diff] [blame] | 4079 | * If we received early data, and the handshake is done, wake |
| 4080 | * any stream that was waiting for it. |
Olivier Houchard | 7fc96d5 | 2017-11-23 18:25:47 +0100 | [diff] [blame] | 4081 | */ |
Olivier Houchard | 6fa63d9 | 2017-11-27 18:41:32 +0100 | [diff] [blame] | 4082 | if (!(h2c->flags & H2_CF_WAIT_FOR_HS) && |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 4083 | (conn->flags & (CO_FL_EARLY_SSL_HS | CO_FL_WAIT_XPRT | CO_FL_EARLY_DATA)) == CO_FL_EARLY_DATA) { |
Olivier Houchard | 6fa63d9 | 2017-11-27 18:41:32 +0100 | [diff] [blame] | 4084 | struct eb32_node *node; |
| 4085 | struct h2s *h2s; |
| 4086 | |
| 4087 | h2c->flags |= H2_CF_WAIT_FOR_HS; |
| 4088 | node = eb32_lookup_ge(&h2c->streams_by_id, 1); |
| 4089 | |
| 4090 | while (node) { |
| 4091 | h2s = container_of(node, struct h2s, by_id); |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 4092 | if (h2s->cs && h2s->endp->flags & CS_EP_WAIT_FOR_HS) |
Willy Tarreau | 7e09445 | 2018-12-19 18:08:52 +0100 | [diff] [blame] | 4093 | h2s_notify_recv(h2s); |
Olivier Houchard | 6fa63d9 | 2017-11-27 18:41:32 +0100 | [diff] [blame] | 4094 | node = eb32_next(node); |
| 4095 | } |
Olivier Houchard | 7fc96d5 | 2017-11-23 18:25:47 +0100 | [diff] [blame] | 4096 | } |
Olivier Houchard | 6fa63d9 | 2017-11-27 18:41:32 +0100 | [diff] [blame] | 4097 | |
Christopher Faulet | aade4ed | 2020-10-08 15:38:41 +0200 | [diff] [blame] | 4098 | if (conn->flags & CO_FL_ERROR || h2c_read0_pending(h2c) || |
Willy Tarreau | 29a9824 | 2017-10-31 06:59:15 +0100 | [diff] [blame] | 4099 | h2c->st0 == H2_CS_ERROR2 || h2c->flags & H2_CF_GOAWAY_FAILED || |
| 4100 | (eb_is_empty(&h2c->streams_by_id) && h2c->last_sid >= 0 && |
| 4101 | h2c->max_id >= h2c->last_sid)) { |
Willy Tarreau | 2348291 | 2019-05-07 15:23:14 +0200 | [diff] [blame] | 4102 | h2_wake_some_streams(h2c, 0); |
Willy Tarreau | fbe3b4f | 2017-10-09 15:14:19 +0200 | [diff] [blame] | 4103 | |
| 4104 | if (eb_is_empty(&h2c->streams_by_id)) { |
| 4105 | /* no more stream, kill the connection now */ |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 4106 | h2_release(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4107 | TRACE_DEVEL("leaving after releasing the connection", H2_EV_H2C_WAKE); |
Willy Tarreau | fbe3b4f | 2017-10-09 15:14:19 +0200 | [diff] [blame] | 4108 | return -1; |
| 4109 | } |
Willy Tarreau | 4481e26 | 2019-10-31 15:36:30 +0100 | [diff] [blame] | 4110 | |
| 4111 | /* connections in error must be removed from the idle lists */ |
Amaury Denoyelle | 3d752a8 | 2021-02-19 15:37:38 +0100 | [diff] [blame] | 4112 | if (conn->flags & CO_FL_LIST_MASK) { |
| 4113 | HA_SPIN_LOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Amaury Denoyelle | 8990b01 | 2021-02-19 15:29:16 +0100 | [diff] [blame] | 4114 | conn_delete_from_tree(&conn->hash_node->node); |
Amaury Denoyelle | 3d752a8 | 2021-02-19 15:37:38 +0100 | [diff] [blame] | 4115 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
| 4116 | } |
Willy Tarreau | 4481e26 | 2019-10-31 15:36:30 +0100 | [diff] [blame] | 4117 | } |
| 4118 | else if (h2c->st0 == H2_CS_ERROR) { |
| 4119 | /* connections in error must be removed from the idle lists */ |
Amaury Denoyelle | 3d752a8 | 2021-02-19 15:37:38 +0100 | [diff] [blame] | 4120 | if (conn->flags & CO_FL_LIST_MASK) { |
| 4121 | HA_SPIN_LOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Amaury Denoyelle | 8990b01 | 2021-02-19 15:29:16 +0100 | [diff] [blame] | 4122 | conn_delete_from_tree(&conn->hash_node->node); |
Amaury Denoyelle | 3d752a8 | 2021-02-19 15:37:38 +0100 | [diff] [blame] | 4123 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
| 4124 | } |
Willy Tarreau | fbe3b4f | 2017-10-09 15:14:19 +0200 | [diff] [blame] | 4125 | } |
| 4126 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 4127 | if (!b_data(&h2c->dbuf)) |
Willy Tarreau | 44e973f | 2018-03-01 17:49:30 +0100 | [diff] [blame] | 4128 | h2_release_buf(h2c, &h2c->dbuf); |
Willy Tarreau | fbe3b4f | 2017-10-09 15:14:19 +0200 | [diff] [blame] | 4129 | |
Olivier Houchard | 53216e7 | 2018-10-10 15:46:36 +0200 | [diff] [blame] | 4130 | if ((conn->flags & CO_FL_SOCK_WR_SH) || |
| 4131 | h2c->st0 == H2_CS_ERROR2 || (h2c->flags & H2_CF_GOAWAY_FAILED) || |
| 4132 | (h2c->st0 != H2_CS_ERROR && |
Willy Tarreau | 662fafc | 2019-05-26 09:43:07 +0200 | [diff] [blame] | 4133 | !br_data(h2c->mbuf) && |
Olivier Houchard | 53216e7 | 2018-10-10 15:46:36 +0200 | [diff] [blame] | 4134 | (h2c->mws <= 0 || LIST_ISEMPTY(&h2c->fctl_list)) && |
| 4135 | ((h2c->flags & H2_CF_MUX_BLOCK_ANY) || LIST_ISEMPTY(&h2c->send_list)))) |
Willy Tarreau | 2e3c000 | 2019-05-26 09:45:23 +0200 | [diff] [blame] | 4136 | h2_release_mbuf(h2c); |
Willy Tarreau | a2af512 | 2017-10-09 11:56:46 +0200 | [diff] [blame] | 4137 | |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 4138 | h2c_update_timeout(h2c); |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 4139 | h2_send(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4140 | TRACE_LEAVE(H2_EV_H2C_WAKE, conn); |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4141 | return 0; |
| 4142 | } |
| 4143 | |
Willy Tarreau | 749f5ca | 2019-03-21 19:19:36 +0100 | [diff] [blame] | 4144 | /* wake-up function called by the connection layer (mux_ops.wake) */ |
Olivier Houchard | 21df6cc | 2018-09-14 23:21:44 +0200 | [diff] [blame] | 4145 | static int h2_wake(struct connection *conn) |
| 4146 | { |
Willy Tarreau | 3d2ee55 | 2018-12-19 14:12:10 +0100 | [diff] [blame] | 4147 | struct h2c *h2c = conn->ctx; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4148 | int ret; |
Olivier Houchard | 21df6cc | 2018-09-14 23:21:44 +0200 | [diff] [blame] | 4149 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4150 | TRACE_ENTER(H2_EV_H2C_WAKE, conn); |
| 4151 | ret = h2_process(h2c); |
Willy Tarreau | 508f989 | 2020-02-11 04:38:56 +0100 | [diff] [blame] | 4152 | if (ret >= 0) |
| 4153 | h2_wake_some_streams(h2c, 0); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4154 | TRACE_LEAVE(H2_EV_H2C_WAKE); |
| 4155 | return ret; |
Olivier Houchard | 21df6cc | 2018-09-14 23:21:44 +0200 | [diff] [blame] | 4156 | } |
| 4157 | |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4158 | /* Connection timeout management. The principle is that if there's no receipt |
| 4159 | * nor sending for a certain amount of time, the connection is closed. If the |
| 4160 | * MUX buffer still has lying data or is not allocatable, the connection is |
| 4161 | * immediately killed. If it's allocatable and empty, we attempt to send a |
| 4162 | * GOAWAY frame. |
| 4163 | */ |
Willy Tarreau | 144f84a | 2021-03-02 16:09:26 +0100 | [diff] [blame] | 4164 | struct task *h2_timeout_task(struct task *t, void *context, unsigned int state) |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4165 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 4166 | struct h2c *h2c = context; |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4167 | int expired = tick_is_expired(t->expire, now_ms); |
| 4168 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4169 | TRACE_ENTER(H2_EV_H2C_WAKE, h2c ? h2c->conn : NULL); |
| 4170 | |
Willy Tarreau | bd42e92 | 2020-06-30 11:19:23 +0200 | [diff] [blame] | 4171 | if (h2c) { |
Olivier Houchard | 48ce6a3 | 2020-07-02 11:58:05 +0200 | [diff] [blame] | 4172 | /* Make sure nobody stole the connection from us */ |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 4173 | HA_SPIN_LOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Olivier Houchard | 48ce6a3 | 2020-07-02 11:58:05 +0200 | [diff] [blame] | 4174 | |
| 4175 | /* Somebody already stole the connection from us, so we should not |
| 4176 | * free it, we just have to free the task. |
| 4177 | */ |
| 4178 | if (!t->context) { |
| 4179 | h2c = NULL; |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 4180 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Olivier Houchard | 48ce6a3 | 2020-07-02 11:58:05 +0200 | [diff] [blame] | 4181 | goto do_leave; |
| 4182 | } |
| 4183 | |
| 4184 | |
Willy Tarreau | bd42e92 | 2020-06-30 11:19:23 +0200 | [diff] [blame] | 4185 | if (!expired) { |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 4186 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Willy Tarreau | bd42e92 | 2020-06-30 11:19:23 +0200 | [diff] [blame] | 4187 | TRACE_DEVEL("leaving (not expired)", H2_EV_H2C_WAKE, h2c->conn); |
| 4188 | return t; |
| 4189 | } |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4190 | |
Willy Tarreau | bd42e92 | 2020-06-30 11:19:23 +0200 | [diff] [blame] | 4191 | if (!h2c_may_expire(h2c)) { |
| 4192 | /* we do still have streams but all of them are idle, waiting |
| 4193 | * for the data layer, so we must not enforce the timeout here. |
| 4194 | */ |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 4195 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Willy Tarreau | bd42e92 | 2020-06-30 11:19:23 +0200 | [diff] [blame] | 4196 | t->expire = TICK_ETERNITY; |
| 4197 | return t; |
| 4198 | } |
Willy Tarreau | c2ea47f | 2019-10-01 10:12:00 +0200 | [diff] [blame] | 4199 | |
Willy Tarreau | bd42e92 | 2020-06-30 11:19:23 +0200 | [diff] [blame] | 4200 | /* We're about to destroy the connection, so make sure nobody attempts |
| 4201 | * to steal it from us. |
| 4202 | */ |
Willy Tarreau | bd42e92 | 2020-06-30 11:19:23 +0200 | [diff] [blame] | 4203 | if (h2c->conn->flags & CO_FL_LIST_MASK) |
Amaury Denoyelle | 8990b01 | 2021-02-19 15:29:16 +0100 | [diff] [blame] | 4204 | conn_delete_from_tree(&h2c->conn->hash_node->node); |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 4205 | |
Amaury Denoyelle | 5c7086f | 2021-01-11 09:21:52 +0100 | [diff] [blame] | 4206 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Willy Tarreau | bd42e92 | 2020-06-30 11:19:23 +0200 | [diff] [blame] | 4207 | } |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 4208 | |
Olivier Houchard | 48ce6a3 | 2020-07-02 11:58:05 +0200 | [diff] [blame] | 4209 | do_leave: |
Olivier Houchard | 3f795f7 | 2019-04-17 22:51:06 +0200 | [diff] [blame] | 4210 | task_destroy(t); |
Willy Tarreau | 0975f11 | 2018-03-29 15:22:59 +0200 | [diff] [blame] | 4211 | |
| 4212 | if (!h2c) { |
| 4213 | /* resources were already deleted */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4214 | TRACE_DEVEL("leaving (not more h2c)", H2_EV_H2C_WAKE); |
Willy Tarreau | 0975f11 | 2018-03-29 15:22:59 +0200 | [diff] [blame] | 4215 | return NULL; |
| 4216 | } |
| 4217 | |
| 4218 | h2c->task = NULL; |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4219 | h2c_error(h2c, H2_ERR_NO_ERROR); |
Willy Tarreau | 2348291 | 2019-05-07 15:23:14 +0200 | [diff] [blame] | 4220 | h2_wake_some_streams(h2c, 0); |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4221 | |
Willy Tarreau | 662fafc | 2019-05-26 09:43:07 +0200 | [diff] [blame] | 4222 | if (br_data(h2c->mbuf)) { |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4223 | /* don't even try to send a GOAWAY, the buffer is stuck */ |
| 4224 | h2c->flags |= H2_CF_GOAWAY_FAILED; |
| 4225 | } |
| 4226 | |
| 4227 | /* try to send but no need to insist */ |
Willy Tarreau | 599391a | 2017-11-24 10:16:00 +0100 | [diff] [blame] | 4228 | h2c->last_sid = h2c->max_id; |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4229 | if (h2c_send_goaway_error(h2c, NULL) <= 0) |
| 4230 | h2c->flags |= H2_CF_GOAWAY_FAILED; |
| 4231 | |
Willy Tarreau | 662fafc | 2019-05-26 09:43:07 +0200 | [diff] [blame] | 4232 | if (br_data(h2c->mbuf) && !(h2c->flags & H2_CF_GOAWAY_FAILED) && conn_xprt_ready(h2c->conn)) { |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 4233 | unsigned int released = 0; |
| 4234 | struct buffer *buf; |
| 4235 | |
| 4236 | for (buf = br_head(h2c->mbuf); b_size(buf); buf = br_del_head(h2c->mbuf)) { |
| 4237 | if (b_data(buf)) { |
| 4238 | int ret = h2c->conn->xprt->snd_buf(h2c->conn, h2c->conn->xprt_ctx, buf, b_data(buf), 0); |
| 4239 | if (!ret) |
| 4240 | break; |
| 4241 | b_del(buf, ret); |
| 4242 | if (b_data(buf)) |
| 4243 | break; |
| 4244 | b_free(buf); |
| 4245 | released++; |
| 4246 | } |
Willy Tarreau | 787db9a | 2018-06-14 18:31:46 +0200 | [diff] [blame] | 4247 | } |
Willy Tarreau | 41c4d6a | 2019-05-26 09:49:17 +0200 | [diff] [blame] | 4248 | |
| 4249 | if (released) |
Willy Tarreau | 4d77bbf | 2021-02-20 12:02:46 +0100 | [diff] [blame] | 4250 | offer_buffers(NULL, released); |
Willy Tarreau | 787db9a | 2018-06-14 18:31:46 +0200 | [diff] [blame] | 4251 | } |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4252 | |
Willy Tarreau | 4481e26 | 2019-10-31 15:36:30 +0100 | [diff] [blame] | 4253 | /* in any case this connection must not be considered idle anymore */ |
Amaury Denoyelle | 3d752a8 | 2021-02-19 15:37:38 +0100 | [diff] [blame] | 4254 | if (h2c->conn->flags & CO_FL_LIST_MASK) { |
| 4255 | HA_SPIN_LOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
Amaury Denoyelle | 8990b01 | 2021-02-19 15:29:16 +0100 | [diff] [blame] | 4256 | conn_delete_from_tree(&h2c->conn->hash_node->node); |
Amaury Denoyelle | 3d752a8 | 2021-02-19 15:37:38 +0100 | [diff] [blame] | 4257 | HA_SPIN_UNLOCK(IDLE_CONNS_LOCK, &idle_conns[tid].idle_conns_lock); |
| 4258 | } |
Willy Tarreau | 4481e26 | 2019-10-31 15:36:30 +0100 | [diff] [blame] | 4259 | |
Willy Tarreau | 0975f11 | 2018-03-29 15:22:59 +0200 | [diff] [blame] | 4260 | /* either we can release everything now or it will be done later once |
| 4261 | * the last stream closes. |
| 4262 | */ |
| 4263 | if (eb_is_empty(&h2c->streams_by_id)) |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 4264 | h2_release(h2c); |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4265 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4266 | TRACE_LEAVE(H2_EV_H2C_WAKE); |
Willy Tarreau | ea39282 | 2017-10-31 10:02:25 +0100 | [diff] [blame] | 4267 | return NULL; |
| 4268 | } |
| 4269 | |
| 4270 | |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4271 | /*******************************************/ |
| 4272 | /* functions below are used by the streams */ |
| 4273 | /*******************************************/ |
| 4274 | |
| 4275 | /* |
| 4276 | * Attach a new stream to a connection |
| 4277 | * (Used for outgoing connections) |
| 4278 | */ |
Christopher Faulet | e00ad35 | 2021-12-16 14:44:31 +0100 | [diff] [blame] | 4279 | static int h2_attach(struct connection *conn, struct conn_stream *cs, struct session *sess) |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4280 | { |
Olivier Houchard | 7a57e8a | 2018-11-27 17:36:33 +0100 | [diff] [blame] | 4281 | struct h2s *h2s; |
Willy Tarreau | 3d2ee55 | 2018-12-19 14:12:10 +0100 | [diff] [blame] | 4282 | struct h2c *h2c = conn->ctx; |
Olivier Houchard | 7a57e8a | 2018-11-27 17:36:33 +0100 | [diff] [blame] | 4283 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4284 | TRACE_ENTER(H2_EV_H2S_NEW, conn); |
Olivier Houchard | f502aca | 2018-12-14 19:42:40 +0100 | [diff] [blame] | 4285 | h2s = h2c_bck_stream_new(h2c, cs, sess); |
Olivier Houchard | 7a57e8a | 2018-11-27 17:36:33 +0100 | [diff] [blame] | 4286 | if (!h2s) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4287 | TRACE_DEVEL("leaving on stream creation failure", H2_EV_H2S_NEW|H2_EV_H2S_ERR, conn); |
Christopher Faulet | e00ad35 | 2021-12-16 14:44:31 +0100 | [diff] [blame] | 4288 | return -1; |
Olivier Houchard | 7a57e8a | 2018-11-27 17:36:33 +0100 | [diff] [blame] | 4289 | } |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 4290 | |
| 4291 | /* the connection is not idle anymore, let's mark this */ |
| 4292 | HA_ATOMIC_AND(&h2c->wait_event.tasklet->state, ~TASK_F_USR1); |
Willy Tarreau | 4f8cd43 | 2021-03-02 17:27:58 +0100 | [diff] [blame] | 4293 | xprt_set_used(h2c->conn, h2c->conn->xprt, h2c->conn->xprt_ctx); |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 4294 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4295 | TRACE_LEAVE(H2_EV_H2S_NEW, conn, h2s); |
Christopher Faulet | e00ad35 | 2021-12-16 14:44:31 +0100 | [diff] [blame] | 4296 | return 0; |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4297 | } |
| 4298 | |
Willy Tarreau | fafd398 | 2018-11-18 21:29:20 +0100 | [diff] [blame] | 4299 | /* Retrieves the first valid conn_stream from this connection, or returns NULL. |
| 4300 | * We have to scan because we may have some orphan streams. It might be |
| 4301 | * beneficial to scan backwards from the end to reduce the likeliness to find |
| 4302 | * orphans. |
| 4303 | */ |
Christopher Faulet | 64b8d33 | 2022-04-01 13:21:41 +0200 | [diff] [blame] | 4304 | static struct conn_stream *h2_get_first_cs(const struct connection *conn) |
Willy Tarreau | fafd398 | 2018-11-18 21:29:20 +0100 | [diff] [blame] | 4305 | { |
Willy Tarreau | 3d2ee55 | 2018-12-19 14:12:10 +0100 | [diff] [blame] | 4306 | struct h2c *h2c = conn->ctx; |
Willy Tarreau | fafd398 | 2018-11-18 21:29:20 +0100 | [diff] [blame] | 4307 | struct h2s *h2s; |
| 4308 | struct eb32_node *node; |
| 4309 | |
| 4310 | node = eb32_first(&h2c->streams_by_id); |
| 4311 | while (node) { |
| 4312 | h2s = container_of(node, struct h2s, by_id); |
| 4313 | if (h2s->cs) |
| 4314 | return h2s->cs; |
| 4315 | node = eb32_next(node); |
| 4316 | } |
| 4317 | return NULL; |
| 4318 | } |
| 4319 | |
Olivier Houchard | 9b8e11e | 2019-10-25 16:19:26 +0200 | [diff] [blame] | 4320 | static int h2_ctl(struct connection *conn, enum mux_ctl_type mux_ctl, void *output) |
| 4321 | { |
| 4322 | int ret = 0; |
| 4323 | struct h2c *h2c = conn->ctx; |
| 4324 | |
| 4325 | switch (mux_ctl) { |
| 4326 | case MUX_STATUS: |
| 4327 | /* Only consider the mux to be ready if we're done with |
| 4328 | * the preface and settings, and we had no error. |
| 4329 | */ |
| 4330 | if (h2c->st0 >= H2_CS_FRAME_H && h2c->st0 < H2_CS_ERROR) |
| 4331 | ret |= MUX_STATUS_READY; |
| 4332 | return ret; |
Christopher Faulet | 4c8ad84 | 2020-10-06 14:59:17 +0200 | [diff] [blame] | 4333 | case MUX_EXIT_STATUS: |
| 4334 | return MUX_ES_UNKNOWN; |
Olivier Houchard | 9b8e11e | 2019-10-25 16:19:26 +0200 | [diff] [blame] | 4335 | default: |
| 4336 | return -1; |
| 4337 | } |
| 4338 | } |
| 4339 | |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4340 | /* |
Olivier Houchard | 060ed43 | 2018-11-06 16:32:42 +0100 | [diff] [blame] | 4341 | * Destroy the mux and the associated connection, if it is no longer used |
| 4342 | */ |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 4343 | static void h2_destroy(void *ctx) |
Olivier Houchard | 060ed43 | 2018-11-06 16:32:42 +0100 | [diff] [blame] | 4344 | { |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 4345 | struct h2c *h2c = ctx; |
Olivier Houchard | 060ed43 | 2018-11-06 16:32:42 +0100 | [diff] [blame] | 4346 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4347 | TRACE_ENTER(H2_EV_H2C_END, h2c->conn); |
Christopher Faulet | 4e61096 | 2022-04-14 11:23:50 +0200 | [diff] [blame] | 4348 | if (eb_is_empty(&h2c->streams_by_id)) { |
| 4349 | BUG_ON(h2c->conn->ctx != h2c); |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 4350 | h2_release(h2c); |
Christopher Faulet | 4e61096 | 2022-04-14 11:23:50 +0200 | [diff] [blame] | 4351 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4352 | TRACE_LEAVE(H2_EV_H2C_END); |
Olivier Houchard | 060ed43 | 2018-11-06 16:32:42 +0100 | [diff] [blame] | 4353 | } |
| 4354 | |
| 4355 | /* |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4356 | * Detach the stream from the connection and possibly release the connection. |
| 4357 | */ |
| 4358 | static void h2_detach(struct conn_stream *cs) |
| 4359 | { |
Christopher Faulet | db90f2a | 2022-03-22 16:06:25 +0100 | [diff] [blame] | 4360 | struct h2s *h2s = __cs_mux(cs); |
Willy Tarreau | 6093514 | 2017-10-16 18:11:19 +0200 | [diff] [blame] | 4361 | struct h2c *h2c; |
Olivier Houchard | f502aca | 2018-12-14 19:42:40 +0100 | [diff] [blame] | 4362 | struct session *sess; |
Willy Tarreau | 6093514 | 2017-10-16 18:11:19 +0200 | [diff] [blame] | 4363 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4364 | TRACE_ENTER(H2_EV_STRM_END, h2s ? h2s->h2c->conn : NULL, h2s); |
| 4365 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4366 | if (!h2s) { |
| 4367 | TRACE_LEAVE(H2_EV_STRM_END); |
Willy Tarreau | 6093514 | 2017-10-16 18:11:19 +0200 | [diff] [blame] | 4368 | return; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4369 | } |
Willy Tarreau | 6093514 | 2017-10-16 18:11:19 +0200 | [diff] [blame] | 4370 | |
Willy Tarreau | d946416 | 2020-01-10 18:25:07 +0100 | [diff] [blame] | 4371 | /* there's no txbuf so we're certain not to be able to send anything */ |
| 4372 | h2s->flags &= ~H2_SF_NOTIFIED; |
Olivier Houchard | 998410a | 2019-04-15 19:23:37 +0200 | [diff] [blame] | 4373 | |
Olivier Houchard | f502aca | 2018-12-14 19:42:40 +0100 | [diff] [blame] | 4374 | sess = h2s->sess; |
Willy Tarreau | 6093514 | 2017-10-16 18:11:19 +0200 | [diff] [blame] | 4375 | h2c = h2s->h2c; |
| 4376 | h2s->cs = NULL; |
Willy Tarreau | 7ac60e8 | 2018-07-19 09:04:05 +0200 | [diff] [blame] | 4377 | h2c->nb_cs--; |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 4378 | if (!h2c->nb_cs) |
| 4379 | h2c->idle_start = now_ms; |
| 4380 | |
Willy Tarreau | fa1d357 | 2019-01-31 10:31:51 +0100 | [diff] [blame] | 4381 | if ((h2c->flags & (H2_CF_IS_BACK|H2_CF_DEM_TOOMANY)) == H2_CF_DEM_TOOMANY && |
| 4382 | !h2_frt_has_too_many_cs(h2c)) { |
| 4383 | /* frontend connection was blocking new streams creation */ |
Willy Tarreau | f210191 | 2018-07-19 10:11:38 +0200 | [diff] [blame] | 4384 | h2c->flags &= ~H2_CF_DEM_TOOMANY; |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 4385 | h2c_restart_reading(h2c, 1); |
Willy Tarreau | f210191 | 2018-07-19 10:11:38 +0200 | [diff] [blame] | 4386 | } |
Willy Tarreau | 6093514 | 2017-10-16 18:11:19 +0200 | [diff] [blame] | 4387 | |
Willy Tarreau | 22cf59b | 2017-11-10 11:42:33 +0100 | [diff] [blame] | 4388 | /* this stream may be blocked waiting for some data to leave (possibly |
| 4389 | * an ES or RST frame), so orphan it in this case. |
| 4390 | */ |
Christopher Faulet | 897d612 | 2021-12-17 17:28:35 +0100 | [diff] [blame] | 4391 | if (!(h2c->conn->flags & CO_FL_ERROR) && |
Willy Tarreau | a2b5181 | 2018-07-27 09:55:14 +0200 | [diff] [blame] | 4392 | (h2c->st0 < H2_CS_ERROR) && |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4393 | (h2s->flags & (H2_SF_BLK_MBUSY | H2_SF_BLK_MROOM | H2_SF_BLK_MFCTL)) && |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 4394 | ((h2s->flags & (H2_SF_WANT_SHUTR | H2_SF_WANT_SHUTW)) || h2s->subs)) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4395 | TRACE_DEVEL("leaving on stream blocked", H2_EV_STRM_END|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 4396 | /* refresh the timeout if none was active, so that the last |
| 4397 | * leaving stream may arm it. |
| 4398 | */ |
| 4399 | if (!tick_isset(h2c->task->expire)) |
| 4400 | h2c_update_timeout(h2c); |
Willy Tarreau | 22cf59b | 2017-11-10 11:42:33 +0100 | [diff] [blame] | 4401 | return; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4402 | } |
Willy Tarreau | 22cf59b | 2017-11-10 11:42:33 +0100 | [diff] [blame] | 4403 | |
Willy Tarreau | 45f752e | 2017-10-30 15:44:59 +0100 | [diff] [blame] | 4404 | if ((h2c->flags & H2_CF_DEM_BLOCK_ANY && h2s->id == h2c->dsi) || |
| 4405 | (h2c->flags & H2_CF_MUX_BLOCK_ANY && h2s->id == h2c->msi)) { |
| 4406 | /* unblock the connection if it was blocked on this |
| 4407 | * stream. |
| 4408 | */ |
| 4409 | h2c->flags &= ~H2_CF_DEM_BLOCK_ANY; |
| 4410 | h2c->flags &= ~H2_CF_MUX_BLOCK_ANY; |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 4411 | h2c_restart_reading(h2c, 1); |
Willy Tarreau | 45f752e | 2017-10-30 15:44:59 +0100 | [diff] [blame] | 4412 | } |
| 4413 | |
Willy Tarreau | 71049cc | 2018-03-28 13:56:39 +0200 | [diff] [blame] | 4414 | h2s_destroy(h2s); |
Willy Tarreau | 6093514 | 2017-10-16 18:11:19 +0200 | [diff] [blame] | 4415 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 4416 | if (h2c->flags & H2_CF_IS_BACK) { |
Olivier Houchard | 8a78690 | 2018-12-15 16:05:40 +0100 | [diff] [blame] | 4417 | if (!(h2c->conn->flags & |
| 4418 | (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH))) { |
Christopher Faulet | c5579d1 | 2020-07-01 15:45:41 +0200 | [diff] [blame] | 4419 | if (h2c->conn->flags & CO_FL_PRIVATE) { |
Christopher Faulet | 08016ab | 2020-07-01 16:10:06 +0200 | [diff] [blame] | 4420 | /* Add the connection in the session server list, if not already done */ |
| 4421 | if (!session_add_conn(sess, h2c->conn, h2c->conn->target)) { |
| 4422 | h2c->conn->owner = NULL; |
| 4423 | if (eb_is_empty(&h2c->streams_by_id)) { |
| 4424 | h2c->conn->mux->destroy(h2c); |
| 4425 | TRACE_DEVEL("leaving on error after killing outgoing connection", H2_EV_STRM_END|H2_EV_H2C_ERR); |
| 4426 | return; |
Christopher Faulet | c5579d1 | 2020-07-01 15:45:41 +0200 | [diff] [blame] | 4427 | } |
| 4428 | } |
Christopher Faulet | 08016ab | 2020-07-01 16:10:06 +0200 | [diff] [blame] | 4429 | if (eb_is_empty(&h2c->streams_by_id)) { |
Christopher Faulet | c5579d1 | 2020-07-01 15:45:41 +0200 | [diff] [blame] | 4430 | if (session_check_idle_conn(h2c->conn->owner, h2c->conn) != 0) { |
| 4431 | /* At this point either the connection is destroyed, or it's been added to the server idle list, just stop */ |
| 4432 | TRACE_DEVEL("leaving without reusable idle connection", H2_EV_STRM_END); |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 4433 | return; |
| 4434 | } |
| 4435 | } |
Olivier Houchard | 8a78690 | 2018-12-15 16:05:40 +0100 | [diff] [blame] | 4436 | } |
Christopher Faulet | c5579d1 | 2020-07-01 15:45:41 +0200 | [diff] [blame] | 4437 | else { |
| 4438 | if (eb_is_empty(&h2c->streams_by_id)) { |
Amaury Denoyelle | 6b8daef | 2020-10-14 18:17:10 +0200 | [diff] [blame] | 4439 | /* If the connection is owned by the session, first remove it |
| 4440 | * from its list |
| 4441 | */ |
| 4442 | if (h2c->conn->owner) { |
| 4443 | session_unown_conn(h2c->conn->owner, h2c->conn); |
| 4444 | h2c->conn->owner = NULL; |
| 4445 | } |
| 4446 | |
Willy Tarreau | e388f2f | 2021-03-02 16:51:09 +0100 | [diff] [blame] | 4447 | /* mark that the tasklet may lose its context to another thread and |
| 4448 | * that the handler needs to check it under the idle conns lock. |
| 4449 | */ |
| 4450 | HA_ATOMIC_OR(&h2c->wait_event.tasklet->state, TASK_F_USR1); |
Willy Tarreau | 4f8cd43 | 2021-03-02 17:27:58 +0100 | [diff] [blame] | 4451 | xprt_set_idle(h2c->conn, h2c->conn->xprt, h2c->conn->xprt_ctx); |
| 4452 | |
Olivier Houchard | dc2f275 | 2020-02-13 19:12:07 +0100 | [diff] [blame] | 4453 | if (!srv_add_to_idle_list(objt_server(h2c->conn->target), h2c->conn, 1)) { |
Olivier Houchard | 2444aa5 | 2020-01-20 13:56:01 +0100 | [diff] [blame] | 4454 | /* The server doesn't want it, let's kill the connection right away */ |
| 4455 | h2c->conn->mux->destroy(h2c); |
| 4456 | TRACE_DEVEL("leaving on error after killing outgoing connection", H2_EV_STRM_END|H2_EV_H2C_ERR); |
| 4457 | return; |
| 4458 | } |
Olivier Houchard | 199d4fa | 2020-03-22 23:25:51 +0100 | [diff] [blame] | 4459 | /* At this point, the connection has been added to the |
| 4460 | * server idle list, so another thread may already have |
| 4461 | * hijacked it, so we can't do anything with it. |
| 4462 | */ |
Olivier Houchard | 2444aa5 | 2020-01-20 13:56:01 +0100 | [diff] [blame] | 4463 | TRACE_DEVEL("reusable idle connection", H2_EV_STRM_END); |
| 4464 | return; |
Olivier Houchard | 8a78690 | 2018-12-15 16:05:40 +0100 | [diff] [blame] | 4465 | |
Olivier Houchard | 8a78690 | 2018-12-15 16:05:40 +0100 | [diff] [blame] | 4466 | } |
Amaury Denoyelle | 8990b01 | 2021-02-19 15:29:16 +0100 | [diff] [blame] | 4467 | else if (!h2c->conn->hash_node->node.node.leaf_p && |
Amaury Denoyelle | 6b8daef | 2020-10-14 18:17:10 +0200 | [diff] [blame] | 4468 | h2_avail_streams(h2c->conn) > 0 && objt_server(h2c->conn->target) && |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 4469 | !LIST_INLIST(&h2c->conn->session_list)) { |
Willy Tarreau | 430bf4a | 2021-03-04 09:45:32 +0100 | [diff] [blame] | 4470 | ebmb_insert(&__objt_server(h2c->conn->target)->per_thr[tid].avail_conns, |
Amaury Denoyelle | 8990b01 | 2021-02-19 15:29:16 +0100 | [diff] [blame] | 4471 | &h2c->conn->hash_node->node, |
| 4472 | sizeof(h2c->conn->hash_node->hash)); |
Christopher Faulet | c5579d1 | 2020-07-01 15:45:41 +0200 | [diff] [blame] | 4473 | } |
Olivier Houchard | 8a78690 | 2018-12-15 16:05:40 +0100 | [diff] [blame] | 4474 | } |
| 4475 | } |
| 4476 | } |
| 4477 | |
Willy Tarreau | e323f34 | 2018-03-28 13:51:45 +0200 | [diff] [blame] | 4478 | /* We don't want to close right now unless we're removing the |
| 4479 | * last stream, and either the connection is in error, or it |
| 4480 | * reached the ID already specified in a GOAWAY frame received |
| 4481 | * or sent (as seen by last_sid >= 0). |
| 4482 | */ |
Olivier Houchard | 7a97743 | 2019-03-21 15:47:13 +0100 | [diff] [blame] | 4483 | if (h2c_is_dead(h2c)) { |
Willy Tarreau | e323f34 | 2018-03-28 13:51:45 +0200 | [diff] [blame] | 4484 | /* no more stream will come, kill it now */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4485 | TRACE_DEVEL("leaving and killing dead connection", H2_EV_STRM_END, h2c->conn); |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 4486 | h2_release(h2c); |
Willy Tarreau | e323f34 | 2018-03-28 13:51:45 +0200 | [diff] [blame] | 4487 | } |
| 4488 | else if (h2c->task) { |
Willy Tarreau | 15a4733 | 2022-03-18 15:57:34 +0100 | [diff] [blame] | 4489 | h2c_update_timeout(h2c); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4490 | TRACE_DEVEL("leaving, refreshing connection's timeout", H2_EV_STRM_END, h2c->conn); |
Willy Tarreau | 6093514 | 2017-10-16 18:11:19 +0200 | [diff] [blame] | 4491 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4492 | else |
| 4493 | TRACE_DEVEL("leaving", H2_EV_STRM_END, h2c->conn); |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4494 | } |
| 4495 | |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4496 | /* Performs a synchronous or asynchronous shutr(). */ |
| 4497 | static void h2_do_shutr(struct h2s *h2s) |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4498 | { |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4499 | struct h2c *h2c = h2s->h2c; |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 4500 | |
Willy Tarreau | f983d00 | 2019-05-14 10:40:21 +0200 | [diff] [blame] | 4501 | if (h2s->st == H2_SS_CLOSED) |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4502 | goto done; |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 4503 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4504 | TRACE_ENTER(H2_EV_STRM_SHUT, h2c->conn, h2s); |
| 4505 | |
Willy Tarreau | 1805904 | 2019-01-31 19:12:48 +0100 | [diff] [blame] | 4506 | /* a connstream may require us to immediately kill the whole connection |
| 4507 | * for example because of a "tcp-request content reject" rule that is |
| 4508 | * normally used to limit abuse. In this case we schedule a goaway to |
| 4509 | * close the connection. |
Willy Tarreau | 926fa4c | 2017-11-07 14:42:12 +0100 | [diff] [blame] | 4510 | */ |
Christopher Faulet | ca2b527 | 2022-03-30 14:48:10 +0200 | [diff] [blame] | 4511 | if ((h2s->endp->flags & CS_EP_KILL_CONN) && |
Willy Tarreau | 1805904 | 2019-01-31 19:12:48 +0100 | [diff] [blame] | 4512 | !(h2c->flags & (H2_CF_GOAWAY_SENT|H2_CF_GOAWAY_FAILED))) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4513 | TRACE_STATE("stream wants to kill the connection", H2_EV_STRM_SHUT, h2c->conn, h2s); |
Willy Tarreau | 1805904 | 2019-01-31 19:12:48 +0100 | [diff] [blame] | 4514 | h2c_error(h2c, H2_ERR_ENHANCE_YOUR_CALM); |
| 4515 | h2s_error(h2s, H2_ERR_ENHANCE_YOUR_CALM); |
| 4516 | } |
Christopher Faulet | 35757d3 | 2019-03-07 15:51:33 +0100 | [diff] [blame] | 4517 | else if (!(h2s->flags & H2_SF_HEADERS_SENT)) { |
| 4518 | /* Nothing was never sent for this stream, so reset with |
| 4519 | * REFUSED_STREAM error to let the client retry the |
| 4520 | * request. |
| 4521 | */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4522 | TRACE_STATE("no headers sent yet, trying a retryable abort", H2_EV_STRM_SHUT, h2c->conn, h2s); |
Christopher Faulet | 35757d3 | 2019-03-07 15:51:33 +0100 | [diff] [blame] | 4523 | h2s_error(h2s, H2_ERR_REFUSED_STREAM); |
| 4524 | } |
Willy Tarreau | cfba9d6 | 2019-08-06 10:30:58 +0200 | [diff] [blame] | 4525 | else { |
| 4526 | /* a final response was already provided, we don't want this |
| 4527 | * stream anymore. This may happen when the server responds |
| 4528 | * before the end of an upload and closes quickly (redirect, |
| 4529 | * deny, ...) |
| 4530 | */ |
| 4531 | h2s_error(h2s, H2_ERR_CANCEL); |
| 4532 | } |
Willy Tarreau | 1805904 | 2019-01-31 19:12:48 +0100 | [diff] [blame] | 4533 | |
Willy Tarreau | 90c3232 | 2017-11-24 08:00:30 +0100 | [diff] [blame] | 4534 | if (!(h2s->flags & H2_SF_RST_SENT) && |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4535 | h2s_send_rst_stream(h2c, h2s) <= 0) |
Willy Tarreau | b2e290a | 2018-03-30 17:35:38 +0200 | [diff] [blame] | 4536 | goto add_to_list; |
Willy Tarreau | 90c3232 | 2017-11-24 08:00:30 +0100 | [diff] [blame] | 4537 | |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 4538 | if (!(h2c->wait_event.events & SUB_RETRY_SEND)) |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 4539 | tasklet_wakeup(h2c->wait_event.tasklet); |
Willy Tarreau | 00dd078 | 2018-03-01 16:31:34 +0100 | [diff] [blame] | 4540 | h2s_close(h2s); |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4541 | done: |
| 4542 | h2s->flags &= ~H2_SF_WANT_SHUTR; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4543 | TRACE_LEAVE(H2_EV_STRM_SHUT, h2c->conn, h2s); |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4544 | return; |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4545 | add_to_list: |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4546 | /* Let the handler know we want to shutr, and add ourselves to the |
| 4547 | * most relevant list if not yet done. h2_deferred_shut() will be |
| 4548 | * automatically called via the shut_tl tasklet when there's room |
| 4549 | * again. |
| 4550 | */ |
| 4551 | h2s->flags |= H2_SF_WANT_SHUTR; |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 4552 | if (!LIST_INLIST(&h2s->list)) { |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4553 | if (h2s->flags & H2_SF_BLK_MFCTL) |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 4554 | LIST_APPEND(&h2c->fctl_list, &h2s->list); |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4555 | else if (h2s->flags & (H2_SF_BLK_MBUSY|H2_SF_BLK_MROOM)) |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 4556 | LIST_APPEND(&h2c->send_list, &h2s->list); |
Willy Tarreau | b2e290a | 2018-03-30 17:35:38 +0200 | [diff] [blame] | 4557 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4558 | TRACE_LEAVE(H2_EV_STRM_SHUT, h2c->conn, h2s); |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4559 | return; |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4560 | } |
| 4561 | |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4562 | /* Performs a synchronous or asynchronous shutw(). */ |
| 4563 | static void h2_do_shutw(struct h2s *h2s) |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4564 | { |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4565 | struct h2c *h2c = h2s->h2c; |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 4566 | |
Willy Tarreau | cfba9d6 | 2019-08-06 10:30:58 +0200 | [diff] [blame] | 4567 | if (h2s->st == H2_SS_HLOC || h2s->st == H2_SS_CLOSED) |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4568 | goto done; |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 4569 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4570 | TRACE_ENTER(H2_EV_STRM_SHUT, h2c->conn, h2s); |
| 4571 | |
Willy Tarreau | cfba9d6 | 2019-08-06 10:30:58 +0200 | [diff] [blame] | 4572 | if (h2s->st != H2_SS_ERROR && (h2s->flags & H2_SF_HEADERS_SENT)) { |
Willy Tarreau | 58e3208 | 2017-11-07 14:41:09 +0100 | [diff] [blame] | 4573 | /* we can cleanly close using an empty data frame only after headers */ |
| 4574 | |
| 4575 | if (!(h2s->flags & (H2_SF_ES_SENT|H2_SF_RST_SENT)) && |
| 4576 | h2_send_empty_data_es(h2s) <= 0) |
Willy Tarreau | b2e290a | 2018-03-30 17:35:38 +0200 | [diff] [blame] | 4577 | goto add_to_list; |
Willy Tarreau | 58e3208 | 2017-11-07 14:41:09 +0100 | [diff] [blame] | 4578 | |
| 4579 | if (h2s->st == H2_SS_HREM) |
Willy Tarreau | 00dd078 | 2018-03-01 16:31:34 +0100 | [diff] [blame] | 4580 | h2s_close(h2s); |
Willy Tarreau | 58e3208 | 2017-11-07 14:41:09 +0100 | [diff] [blame] | 4581 | else |
| 4582 | h2s->st = H2_SS_HLOC; |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 4583 | } else { |
Willy Tarreau | 1805904 | 2019-01-31 19:12:48 +0100 | [diff] [blame] | 4584 | /* a connstream may require us to immediately kill the whole connection |
| 4585 | * for example because of a "tcp-request content reject" rule that is |
| 4586 | * normally used to limit abuse. In this case we schedule a goaway to |
| 4587 | * close the connection. |
Willy Tarreau | a1349f0 | 2017-10-31 07:41:55 +0100 | [diff] [blame] | 4588 | */ |
Christopher Faulet | ca2b527 | 2022-03-30 14:48:10 +0200 | [diff] [blame] | 4589 | if ((h2s->endp->flags & CS_EP_KILL_CONN) && |
Willy Tarreau | 1805904 | 2019-01-31 19:12:48 +0100 | [diff] [blame] | 4590 | !(h2c->flags & (H2_CF_GOAWAY_SENT|H2_CF_GOAWAY_FAILED))) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4591 | TRACE_STATE("stream wants to kill the connection", H2_EV_STRM_SHUT, h2c->conn, h2s); |
Willy Tarreau | 1805904 | 2019-01-31 19:12:48 +0100 | [diff] [blame] | 4592 | h2c_error(h2c, H2_ERR_ENHANCE_YOUR_CALM); |
| 4593 | h2s_error(h2s, H2_ERR_ENHANCE_YOUR_CALM); |
| 4594 | } |
Christopher Faulet | 35757d3 | 2019-03-07 15:51:33 +0100 | [diff] [blame] | 4595 | else { |
| 4596 | /* Nothing was never sent for this stream, so reset with |
| 4597 | * REFUSED_STREAM error to let the client retry the |
| 4598 | * request. |
| 4599 | */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4600 | TRACE_STATE("no headers sent yet, trying a retryable abort", H2_EV_STRM_SHUT, h2c->conn, h2s); |
Christopher Faulet | 35757d3 | 2019-03-07 15:51:33 +0100 | [diff] [blame] | 4601 | h2s_error(h2s, H2_ERR_REFUSED_STREAM); |
| 4602 | } |
Willy Tarreau | 1805904 | 2019-01-31 19:12:48 +0100 | [diff] [blame] | 4603 | |
Willy Tarreau | 90c3232 | 2017-11-24 08:00:30 +0100 | [diff] [blame] | 4604 | if (!(h2s->flags & H2_SF_RST_SENT) && |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4605 | h2s_send_rst_stream(h2c, h2s) <= 0) |
Willy Tarreau | b2e290a | 2018-03-30 17:35:38 +0200 | [diff] [blame] | 4606 | goto add_to_list; |
Willy Tarreau | 90c3232 | 2017-11-24 08:00:30 +0100 | [diff] [blame] | 4607 | |
Willy Tarreau | 00dd078 | 2018-03-01 16:31:34 +0100 | [diff] [blame] | 4608 | h2s_close(h2s); |
Willy Tarreau | c7576ea | 2017-10-29 22:00:09 +0100 | [diff] [blame] | 4609 | } |
| 4610 | |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 4611 | if (!(h2c->wait_event.events & SUB_RETRY_SEND)) |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 4612 | tasklet_wakeup(h2c->wait_event.tasklet); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4613 | |
| 4614 | TRACE_LEAVE(H2_EV_STRM_SHUT, h2c->conn, h2s); |
| 4615 | |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4616 | done: |
| 4617 | h2s->flags &= ~H2_SF_WANT_SHUTW; |
| 4618 | return; |
Willy Tarreau | b2e290a | 2018-03-30 17:35:38 +0200 | [diff] [blame] | 4619 | |
| 4620 | add_to_list: |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4621 | /* Let the handler know we want to shutw, and add ourselves to the |
| 4622 | * most relevant list if not yet done. h2_deferred_shut() will be |
| 4623 | * automatically called via the shut_tl tasklet when there's room |
| 4624 | * again. |
| 4625 | */ |
| 4626 | h2s->flags |= H2_SF_WANT_SHUTW; |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 4627 | if (!LIST_INLIST(&h2s->list)) { |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4628 | if (h2s->flags & H2_SF_BLK_MFCTL) |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 4629 | LIST_APPEND(&h2c->fctl_list, &h2s->list); |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4630 | else if (h2s->flags & (H2_SF_BLK_MBUSY|H2_SF_BLK_MROOM)) |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 4631 | LIST_APPEND(&h2c->send_list, &h2s->list); |
Willy Tarreau | b2e290a | 2018-03-30 17:35:38 +0200 | [diff] [blame] | 4632 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4633 | TRACE_LEAVE(H2_EV_STRM_SHUT, h2c->conn, h2s); |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4634 | return; |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4635 | } |
| 4636 | |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4637 | /* This is the tasklet referenced in h2s->shut_tl, it is used for |
Willy Tarreau | 749f5ca | 2019-03-21 19:19:36 +0100 | [diff] [blame] | 4638 | * deferred shutdowns when the h2_detach() was done but the mux buffer was full |
| 4639 | * and prevented the last frame from being emitted. |
| 4640 | */ |
Willy Tarreau | 144f84a | 2021-03-02 16:09:26 +0100 | [diff] [blame] | 4641 | struct task *h2_deferred_shut(struct task *t, void *ctx, unsigned int state) |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4642 | { |
| 4643 | struct h2s *h2s = ctx; |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4644 | struct h2c *h2c = h2s->h2c; |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4645 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4646 | TRACE_ENTER(H2_EV_STRM_SHUT, h2c->conn, h2s); |
| 4647 | |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4648 | if (h2s->flags & H2_SF_NOTIFIED) { |
| 4649 | /* some data processing remains to be done first */ |
| 4650 | goto end; |
| 4651 | } |
| 4652 | |
Willy Tarreau | 2c249eb | 2019-05-13 18:06:17 +0200 | [diff] [blame] | 4653 | if (h2s->flags & H2_SF_WANT_SHUTW) |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4654 | h2_do_shutw(h2s); |
| 4655 | |
Willy Tarreau | 2c249eb | 2019-05-13 18:06:17 +0200 | [diff] [blame] | 4656 | if (h2s->flags & H2_SF_WANT_SHUTR) |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4657 | h2_do_shutr(h2s); |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4658 | |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4659 | if (!(h2s->flags & (H2_SF_WANT_SHUTR|H2_SF_WANT_SHUTW))) { |
Olivier Houchard | afc7cb8 | 2019-03-25 14:08:01 +0100 | [diff] [blame] | 4660 | /* We're done trying to send, remove ourself from the send_list */ |
Olivier Houchard | afc7cb8 | 2019-03-25 14:08:01 +0100 | [diff] [blame] | 4661 | LIST_DEL_INIT(&h2s->list); |
Olivier Houchard | 7a97743 | 2019-03-21 15:47:13 +0100 | [diff] [blame] | 4662 | |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4663 | if (!h2s->cs) { |
| 4664 | h2s_destroy(h2s); |
Willy Tarreau | 7416314 | 2021-03-13 11:30:19 +0100 | [diff] [blame] | 4665 | if (h2c_is_dead(h2c)) { |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4666 | h2_release(h2c); |
Willy Tarreau | 7416314 | 2021-03-13 11:30:19 +0100 | [diff] [blame] | 4667 | t = NULL; |
| 4668 | } |
Willy Tarreau | 88bdba3 | 2019-05-13 18:17:53 +0200 | [diff] [blame] | 4669 | } |
Olivier Houchard | 7a97743 | 2019-03-21 15:47:13 +0100 | [diff] [blame] | 4670 | } |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 4671 | end: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4672 | TRACE_LEAVE(H2_EV_STRM_SHUT); |
Willy Tarreau | 7416314 | 2021-03-13 11:30:19 +0100 | [diff] [blame] | 4673 | return t; |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 4674 | } |
| 4675 | |
Willy Tarreau | 749f5ca | 2019-03-21 19:19:36 +0100 | [diff] [blame] | 4676 | /* shutr() called by the conn_stream (mux_ops.shutr) */ |
Christopher Faulet | 0797656 | 2022-03-31 11:05:05 +0200 | [diff] [blame] | 4677 | static void h2_shutr(struct conn_stream *cs, enum co_shr_mode mode) |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4678 | { |
Christopher Faulet | db90f2a | 2022-03-22 16:06:25 +0100 | [diff] [blame] | 4679 | struct h2s *h2s = __cs_mux(cs); |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4680 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4681 | TRACE_ENTER(H2_EV_STRM_SHUT, h2s->h2c->conn, h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4682 | if (mode) |
| 4683 | h2_do_shutr(h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4684 | TRACE_LEAVE(H2_EV_STRM_SHUT, h2s->h2c->conn, h2s); |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4685 | } |
| 4686 | |
Willy Tarreau | 749f5ca | 2019-03-21 19:19:36 +0100 | [diff] [blame] | 4687 | /* shutw() called by the conn_stream (mux_ops.shutw) */ |
Christopher Faulet | 0797656 | 2022-03-31 11:05:05 +0200 | [diff] [blame] | 4688 | static void h2_shutw(struct conn_stream *cs, enum co_shw_mode mode) |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4689 | { |
Christopher Faulet | db90f2a | 2022-03-22 16:06:25 +0100 | [diff] [blame] | 4690 | struct h2s *h2s = __cs_mux(cs); |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4691 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4692 | TRACE_ENTER(H2_EV_STRM_SHUT, h2s->h2c->conn, h2s); |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4693 | h2_do_shutw(h2s); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4694 | TRACE_LEAVE(H2_EV_STRM_SHUT, h2s->h2c->conn, h2s); |
Olivier Houchard | 8ae735d | 2018-09-11 18:24:28 +0200 | [diff] [blame] | 4695 | } |
| 4696 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 4697 | /* Decode the payload of a HEADERS frame and produce the HTX request or response |
| 4698 | * depending on the connection's side. Returns a positive value on success, a |
| 4699 | * negative value on failure, or 0 if it couldn't proceed. May report connection |
| 4700 | * errors in h2c->errcode if the frame is non-decodable and the connection |
| 4701 | * unrecoverable. In absence of connection error when a failure is reported, the |
| 4702 | * caller must assume a stream error. |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4703 | * |
| 4704 | * The function may fold CONTINUATION frames into the initial HEADERS frame |
| 4705 | * by removing padding and next frame header, then moving the CONTINUATION |
| 4706 | * frame's payload and adjusting h2c->dfl to match the new aggregated frame, |
| 4707 | * leaving a hole between the main frame and the beginning of the next one. |
| 4708 | * The possibly remaining incomplete or next frame at the end may be moved |
| 4709 | * if the aggregated frame is not deleted, in order to fill the hole. Wrapped |
| 4710 | * HEADERS frames are unwrapped into a temporary buffer before decoding. |
| 4711 | * |
| 4712 | * A buffer at the beginning of processing may look like this : |
| 4713 | * |
| 4714 | * ,---.---------.-----.--------------.--------------.------.---. |
| 4715 | * |///| HEADERS | PAD | CONTINUATION | CONTINUATION | DATA |///| |
| 4716 | * `---^---------^-----^--------------^--------------^------^---' |
| 4717 | * | | <-----> | | |
| 4718 | * area | dpl | wrap |
| 4719 | * |<--------------> | |
| 4720 | * | dfl | |
| 4721 | * |<-------------------------------------------------->| |
| 4722 | * head data |
| 4723 | * |
| 4724 | * Padding is automatically overwritten when folding, participating to the |
| 4725 | * hole size after dfl : |
| 4726 | * |
| 4727 | * ,---.------------------------.-----.--------------.------.---. |
| 4728 | * |///| HEADERS : CONTINUATION |/////| CONTINUATION | DATA |///| |
| 4729 | * `---^------------------------^-----^--------------^------^---' |
| 4730 | * | | <-----> | | |
| 4731 | * area | hole | wrap |
| 4732 | * |<-----------------------> | |
| 4733 | * | dfl | |
| 4734 | * |<-------------------------------------------------->| |
| 4735 | * head data |
| 4736 | * |
| 4737 | * Please note that the HEADERS frame is always deprived from its PADLEN byte |
| 4738 | * however it may start with the 5 stream-dep+weight bytes in case of PRIORITY |
| 4739 | * bit. |
Willy Tarreau | 6cc85a5 | 2019-01-02 15:49:20 +0100 | [diff] [blame] | 4740 | * |
| 4741 | * The <flags> field must point to either the stream's flags or to a copy of it |
| 4742 | * so that the function can update the following flags : |
| 4743 | * - H2_SF_DATA_CLEN when content-length is seen |
Willy Tarreau | 6cc85a5 | 2019-01-02 15:49:20 +0100 | [diff] [blame] | 4744 | * - H2_SF_HEADERS_RCVD once the frame is successfully decoded |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 4745 | * |
| 4746 | * The H2_SF_HEADERS_RCVD flag is also looked at in the <flags> field prior to |
| 4747 | * decoding, in order to detect if we're dealing with a headers or a trailers |
| 4748 | * block (the trailers block appears after H2_SF_HEADERS_RCVD was seen). |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4749 | */ |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 4750 | static int h2c_decode_headers(struct h2c *h2c, struct buffer *rxbuf, uint32_t *flags, unsigned long long *body_len, char *upgrade_protocol) |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4751 | { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 4752 | const uint8_t *hdrs = (uint8_t *)b_head(&h2c->dbuf); |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 4753 | struct buffer *tmp = get_trash_chunk(); |
Christopher Faulet | e4ab11b | 2019-06-11 15:05:37 +0200 | [diff] [blame] | 4754 | struct http_hdr list[global.tune.max_http_hdr * 2]; |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 4755 | struct buffer *copy = NULL; |
Willy Tarreau | 174b06a | 2018-04-25 18:13:58 +0200 | [diff] [blame] | 4756 | unsigned int msgf; |
Willy Tarreau | bd4a6b6 | 2018-11-27 09:29:36 +0100 | [diff] [blame] | 4757 | struct htx *htx = NULL; |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4758 | int flen; // header frame len |
| 4759 | int hole = 0; |
Willy Tarreau | 86277d4 | 2019-01-02 15:36:11 +0100 | [diff] [blame] | 4760 | int ret = 0; |
| 4761 | int outlen; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4762 | int wrap; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4763 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4764 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn); |
| 4765 | |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4766 | next_frame: |
| 4767 | if (b_data(&h2c->dbuf) - hole < h2c->dfl) |
| 4768 | goto leave; // incomplete input frame |
| 4769 | |
| 4770 | /* No END_HEADERS means there's one or more CONTINUATION frames. In |
| 4771 | * this case, we'll try to paste it immediately after the initial |
| 4772 | * HEADERS frame payload and kill any possible padding. The initial |
| 4773 | * frame's length will be increased to represent the concatenation |
| 4774 | * of the two frames. The next frame is read from position <tlen> |
| 4775 | * and written at position <flen> (minus padding if some is present). |
| 4776 | */ |
| 4777 | if (unlikely(!(h2c->dff & H2_F_HEADERS_END_HEADERS))) { |
| 4778 | struct h2_fh hdr; |
| 4779 | int clen; // CONTINUATION frame's payload length |
| 4780 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4781 | TRACE_STATE("EH missing, expecting continuation frame", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_RX_HDR, h2c->conn); |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4782 | if (!h2_peek_frame_hdr(&h2c->dbuf, h2c->dfl + hole, &hdr)) { |
| 4783 | /* no more data, the buffer may be full, either due to |
| 4784 | * too large a frame or because of too large a hole that |
| 4785 | * we're going to compact at the end. |
| 4786 | */ |
| 4787 | goto leave; |
| 4788 | } |
| 4789 | |
| 4790 | if (hdr.ft != H2_FT_CONTINUATION) { |
| 4791 | /* RFC7540#6.10: frame of unexpected type */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4792 | TRACE_STATE("not continuation!", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_RX_HDR|H2_EV_RX_CONT|H2_EV_H2C_ERR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4793 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 4794 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4795 | goto fail; |
| 4796 | } |
| 4797 | |
| 4798 | if (hdr.sid != h2c->dsi) { |
| 4799 | /* RFC7540#6.10: frame of different stream */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4800 | TRACE_STATE("different stream ID!", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_RX_HDR|H2_EV_RX_CONT|H2_EV_H2C_ERR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4801 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 4802 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4803 | goto fail; |
| 4804 | } |
| 4805 | |
| 4806 | if ((unsigned)hdr.len > (unsigned)global.tune.bufsize) { |
| 4807 | /* RFC7540#4.2: invalid frame length */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4808 | TRACE_STATE("too large frame!", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_RX_HDR|H2_EV_RX_CONT|H2_EV_H2C_ERR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4809 | h2c_error(h2c, H2_ERR_FRAME_SIZE_ERROR); |
| 4810 | goto fail; |
| 4811 | } |
| 4812 | |
| 4813 | /* detect when we must stop aggragating frames */ |
| 4814 | h2c->dff |= hdr.ff & H2_F_HEADERS_END_HEADERS; |
| 4815 | |
| 4816 | /* Take as much as we can of the CONTINUATION frame's payload */ |
| 4817 | clen = b_data(&h2c->dbuf) - (h2c->dfl + hole + 9); |
| 4818 | if (clen > hdr.len) |
| 4819 | clen = hdr.len; |
| 4820 | |
| 4821 | /* Move the frame's payload over the padding, hole and frame |
| 4822 | * header. At least one of hole or dpl is null (see diagrams |
| 4823 | * above). The hole moves after the new aggragated frame. |
| 4824 | */ |
| 4825 | b_move(&h2c->dbuf, b_peek_ofs(&h2c->dbuf, h2c->dfl + hole + 9), clen, -(h2c->dpl + hole + 9)); |
Christopher Faulet | cb1847c | 2021-04-21 11:11:21 +0200 | [diff] [blame] | 4826 | h2c->dfl += hdr.len - h2c->dpl; |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4827 | hole += h2c->dpl + 9; |
| 4828 | h2c->dpl = 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4829 | TRACE_STATE("waiting for next continuation frame", H2_EV_RX_FRAME|H2_EV_RX_FHDR|H2_EV_RX_CONT|H2_EV_RX_HDR, h2c->conn); |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4830 | goto next_frame; |
| 4831 | } |
| 4832 | |
| 4833 | flen = h2c->dfl - h2c->dpl; |
Willy Tarreau | 6847262 | 2017-12-11 18:36:37 +0100 | [diff] [blame] | 4834 | |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4835 | /* if the input buffer wraps, take a temporary copy of it (rare) */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 4836 | wrap = b_wrap(&h2c->dbuf) - b_head(&h2c->dbuf); |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4837 | if (wrap < h2c->dfl) { |
Willy Tarreau | 68dd985 | 2017-07-03 14:44:26 +0200 | [diff] [blame] | 4838 | copy = alloc_trash_chunk(); |
| 4839 | if (!copy) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4840 | TRACE_DEVEL("failed to allocate temporary buffer", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_H2C_ERR, h2c->conn); |
Willy Tarreau | 68dd985 | 2017-07-03 14:44:26 +0200 | [diff] [blame] | 4841 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
| 4842 | goto fail; |
| 4843 | } |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 4844 | memcpy(copy->area, b_head(&h2c->dbuf), wrap); |
| 4845 | memcpy(copy->area + wrap, b_orig(&h2c->dbuf), h2c->dfl - wrap); |
| 4846 | hdrs = (uint8_t *) copy->area; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4847 | } |
| 4848 | |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4849 | /* Skip StreamDep and weight for now (we don't support PRIORITY) */ |
| 4850 | if (h2c->dff & H2_F_HEADERS_PRIORITY) { |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 4851 | if (read_n32(hdrs) == h2c->dsi) { |
Willy Tarreau | 18b86cd | 2017-12-03 19:24:50 +0100 | [diff] [blame] | 4852 | /* RFC7540#5.3.1 : stream dep may not depend on itself */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4853 | TRACE_STATE("invalid stream dependency!", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_H2C_ERR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 18b86cd | 2017-12-03 19:24:50 +0100 | [diff] [blame] | 4854 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 4855 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | a0d11b6 | 2018-09-05 18:30:05 +0200 | [diff] [blame] | 4856 | goto fail; |
Willy Tarreau | 18b86cd | 2017-12-03 19:24:50 +0100 | [diff] [blame] | 4857 | } |
| 4858 | |
Willy Tarreau | a01f45e | 2018-12-31 07:41:24 +0100 | [diff] [blame] | 4859 | if (flen < 5) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4860 | TRACE_STATE("frame too short for priority!", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_H2C_ERR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | a01f45e | 2018-12-31 07:41:24 +0100 | [diff] [blame] | 4861 | h2c_error(h2c, H2_ERR_FRAME_SIZE_ERROR); |
| 4862 | goto fail; |
| 4863 | } |
| 4864 | |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4865 | hdrs += 5; // stream dep = 4, weight = 1 |
| 4866 | flen -= 5; |
| 4867 | } |
| 4868 | |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 4869 | if (!h2_get_buf(h2c, rxbuf)) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4870 | TRACE_STATE("waiting for h2c rxbuf allocation", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_H2C_BLK, h2c->conn); |
Willy Tarreau | 937f760 | 2018-02-26 15:22:17 +0100 | [diff] [blame] | 4871 | h2c->flags |= H2_CF_DEM_SALLOC; |
Willy Tarreau | 86277d4 | 2019-01-02 15:36:11 +0100 | [diff] [blame] | 4872 | goto leave; |
Willy Tarreau | 59a10fb | 2017-11-21 20:03:02 +0100 | [diff] [blame] | 4873 | } |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4874 | |
Willy Tarreau | 937f760 | 2018-02-26 15:22:17 +0100 | [diff] [blame] | 4875 | /* we can't retry a failed decompression operation so we must be very |
| 4876 | * careful not to take any risks. In practice the output buffer is |
| 4877 | * always empty except maybe for trailers, in which case we simply have |
| 4878 | * to wait for the upper layer to finish consuming what is available. |
| 4879 | */ |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 4880 | htx = htx_from_buf(rxbuf); |
| 4881 | if (!htx_is_empty(htx)) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4882 | TRACE_STATE("waiting for room in h2c rxbuf", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_H2C_BLK, h2c->conn); |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 4883 | h2c->flags |= H2_CF_DEM_SFULL; |
| 4884 | goto leave; |
Willy Tarreau | bd4a6b6 | 2018-11-27 09:29:36 +0100 | [diff] [blame] | 4885 | } |
Willy Tarreau | 59a10fb | 2017-11-21 20:03:02 +0100 | [diff] [blame] | 4886 | |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 4887 | /* past this point we cannot roll back in case of error */ |
Willy Tarreau | 59a10fb | 2017-11-21 20:03:02 +0100 | [diff] [blame] | 4888 | outlen = hpack_decode_frame(h2c->ddht, hdrs, flen, list, |
| 4889 | sizeof(list)/sizeof(list[0]), tmp); |
| 4890 | if (outlen < 0) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4891 | TRACE_STATE("failed to decompress HPACK", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_H2C_ERR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 59a10fb | 2017-11-21 20:03:02 +0100 | [diff] [blame] | 4892 | h2c_error(h2c, H2_ERR_COMPRESSION_ERROR); |
| 4893 | goto fail; |
| 4894 | } |
| 4895 | |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 4896 | /* The PACK decompressor was updated, let's update the input buffer and |
| 4897 | * the parser's state to commit these changes and allow us to later |
| 4898 | * fail solely on the stream if needed. |
| 4899 | */ |
| 4900 | b_del(&h2c->dbuf, h2c->dfl + hole); |
| 4901 | h2c->dfl = hole = 0; |
| 4902 | h2c->st0 = H2_CS_FRAME_H; |
| 4903 | |
Willy Tarreau | 59a10fb | 2017-11-21 20:03:02 +0100 | [diff] [blame] | 4904 | /* OK now we have our header list in <list> */ |
Willy Tarreau | 880f580 | 2019-01-03 08:10:14 +0100 | [diff] [blame] | 4905 | msgf = (h2c->dff & H2_F_HEADERS_END_STREAM) ? 0 : H2_MSGF_BODY; |
Christopher Faulet | d0db423 | 2021-01-22 11:46:30 +0100 | [diff] [blame] | 4906 | msgf |= (*flags & H2_SF_BODY_TUNNEL) ? H2_MSGF_BODY_TUNNEL: 0; |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 4907 | /* If an Extended CONNECT has been sent on this stream, set message flag |
Ilya Shipitsin | acf8459 | 2021-02-06 22:29:08 +0500 | [diff] [blame] | 4908 | * to convert 200 response to 101 htx response */ |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 4909 | msgf |= (*flags & H2_SF_EXT_CONNECT_SENT) ? H2_MSGF_EXT_CONNECT: 0; |
Willy Tarreau | bd4a6b6 | 2018-11-27 09:29:36 +0100 | [diff] [blame] | 4910 | |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 4911 | if (*flags & H2_SF_HEADERS_RCVD) |
| 4912 | goto trailers; |
| 4913 | |
| 4914 | /* This is the first HEADERS frame so it's a headers block */ |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 4915 | if (h2c->flags & H2_CF_IS_BACK) |
Amaury Denoyelle | 7416274 | 2020-12-11 17:53:05 +0100 | [diff] [blame] | 4916 | outlen = h2_make_htx_response(list, htx, &msgf, body_len, upgrade_protocol); |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 4917 | else |
| 4918 | outlen = h2_make_htx_request(list, htx, &msgf, body_len); |
Willy Tarreau | 59a10fb | 2017-11-21 20:03:02 +0100 | [diff] [blame] | 4919 | |
Christopher Faulet | 3d87558 | 2021-04-26 17:46:13 +0200 | [diff] [blame] | 4920 | if (outlen < 0 || htx_free_space(htx) < global.tune.maxrewrite) { |
Willy Tarreau | 2591923 | 2019-01-03 14:48:18 +0100 | [diff] [blame] | 4921 | /* too large headers? this is a stream error only */ |
Christopher Faulet | 3d87558 | 2021-04-26 17:46:13 +0200 | [diff] [blame] | 4922 | TRACE_STATE("message headers too large", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_H2S_ERR|H2_EV_PROTO_ERR, h2c->conn); |
| 4923 | htx->flags |= HTX_FL_PARSING_ERROR; |
Willy Tarreau | 59a10fb | 2017-11-21 20:03:02 +0100 | [diff] [blame] | 4924 | goto fail; |
| 4925 | } |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 4926 | |
Willy Tarreau | 174b06a | 2018-04-25 18:13:58 +0200 | [diff] [blame] | 4927 | if (msgf & H2_MSGF_BODY) { |
| 4928 | /* a payload is present */ |
Christopher Faulet | eaf0d2a | 2019-02-18 16:04:35 +0100 | [diff] [blame] | 4929 | if (msgf & H2_MSGF_BODY_CL) { |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 4930 | *flags |= H2_SF_DATA_CLEN; |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 4931 | htx->extra = *body_len; |
Christopher Faulet | eaf0d2a | 2019-02-18 16:04:35 +0100 | [diff] [blame] | 4932 | } |
Willy Tarreau | 174b06a | 2018-04-25 18:13:58 +0200 | [diff] [blame] | 4933 | } |
Christopher Faulet | 7d247f0 | 2020-12-02 14:26:36 +0100 | [diff] [blame] | 4934 | if (msgf & H2_MSGF_BODYLESS_RSP) |
| 4935 | *flags |= H2_SF_BODYLESS_RESP; |
Willy Tarreau | 174b06a | 2018-04-25 18:13:58 +0200 | [diff] [blame] | 4936 | |
Christopher Faulet | d0db423 | 2021-01-22 11:46:30 +0100 | [diff] [blame] | 4937 | if (msgf & H2_MSGF_BODY_TUNNEL) |
| 4938 | *flags |= H2_SF_BODY_TUNNEL; |
| 4939 | else { |
| 4940 | /* Abort the tunnel attempt, if any */ |
| 4941 | if (*flags & H2_SF_BODY_TUNNEL) |
| 4942 | *flags |= H2_SF_TUNNEL_ABRT; |
| 4943 | *flags &= ~H2_SF_BODY_TUNNEL; |
| 4944 | } |
| 4945 | |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 4946 | done: |
Christopher Faulet | 0b46548 | 2019-02-19 15:14:23 +0100 | [diff] [blame] | 4947 | /* indicate that a HEADERS frame was received for this stream, except |
| 4948 | * for 1xx responses. For 1xx responses, another HEADERS frame is |
| 4949 | * expected. |
| 4950 | */ |
| 4951 | if (!(msgf & H2_MSGF_RSP_1XX)) |
| 4952 | *flags |= H2_SF_HEADERS_RCVD; |
Willy Tarreau | 6cc85a5 | 2019-01-02 15:49:20 +0100 | [diff] [blame] | 4953 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 4954 | if (h2c->dff & H2_F_HEADERS_END_STREAM) { |
| 4955 | /* no more data are expected for this message */ |
| 4956 | htx->flags |= HTX_FL_EOM; |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 4957 | } |
Willy Tarreau | 937f760 | 2018-02-26 15:22:17 +0100 | [diff] [blame] | 4958 | |
Amaury Denoyelle | efe2276 | 2020-12-11 17:53:08 +0100 | [diff] [blame] | 4959 | if (msgf & H2_MSGF_EXT_CONNECT) |
| 4960 | *flags |= H2_SF_EXT_CONNECT_RCVD; |
| 4961 | |
Willy Tarreau | 86277d4 | 2019-01-02 15:36:11 +0100 | [diff] [blame] | 4962 | /* success */ |
| 4963 | ret = 1; |
| 4964 | |
Willy Tarreau | 68dd985 | 2017-07-03 14:44:26 +0200 | [diff] [blame] | 4965 | leave: |
Willy Tarreau | 86277d4 | 2019-01-02 15:36:11 +0100 | [diff] [blame] | 4966 | /* If there is a hole left and it's not at the end, we are forced to |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4967 | * move the remaining data over it. |
| 4968 | */ |
| 4969 | if (hole) { |
| 4970 | if (b_data(&h2c->dbuf) > h2c->dfl + hole) |
| 4971 | b_move(&h2c->dbuf, b_peek_ofs(&h2c->dbuf, h2c->dfl + hole), |
| 4972 | b_data(&h2c->dbuf) - (h2c->dfl + hole), -hole); |
| 4973 | b_sub(&h2c->dbuf, hole); |
| 4974 | } |
| 4975 | |
Christopher Faulet | 07f88d7 | 2021-04-21 10:39:53 +0200 | [diff] [blame] | 4976 | if (b_full(&h2c->dbuf) && h2c->dfl) { |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4977 | /* too large frames */ |
| 4978 | h2c_error(h2c, H2_ERR_INTERNAL_ERROR); |
Willy Tarreau | 86277d4 | 2019-01-02 15:36:11 +0100 | [diff] [blame] | 4979 | ret = -1; |
Willy Tarreau | ea18f86 | 2018-12-22 20:19:26 +0100 | [diff] [blame] | 4980 | } |
| 4981 | |
Christopher Faulet | 27ba2dc | 2018-12-05 11:53:24 +0100 | [diff] [blame] | 4982 | if (htx) |
Willy Tarreau | 5c8cafa | 2018-12-23 11:30:42 +0100 | [diff] [blame] | 4983 | htx_to_buf(htx, rxbuf); |
Willy Tarreau | 68dd985 | 2017-07-03 14:44:26 +0200 | [diff] [blame] | 4984 | free_trash_chunk(copy); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4985 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_HDR, h2c->conn); |
Willy Tarreau | 86277d4 | 2019-01-02 15:36:11 +0100 | [diff] [blame] | 4986 | return ret; |
| 4987 | |
Willy Tarreau | 68dd985 | 2017-07-03 14:44:26 +0200 | [diff] [blame] | 4988 | fail: |
Willy Tarreau | 86277d4 | 2019-01-02 15:36:11 +0100 | [diff] [blame] | 4989 | ret = -1; |
Willy Tarreau | 68dd985 | 2017-07-03 14:44:26 +0200 | [diff] [blame] | 4990 | goto leave; |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 4991 | |
| 4992 | trailers: |
| 4993 | /* This is the last HEADERS frame hence a trailer */ |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 4994 | if (!(h2c->dff & H2_F_HEADERS_END_STREAM)) { |
| 4995 | /* It's a trailer but it's missing ES flag */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 4996 | TRACE_STATE("missing EH on trailers frame", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_H2C_ERR|H2_EV_PROTO_ERR, h2c->conn); |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 4997 | h2c_error(h2c, H2_ERR_PROTOCOL_ERROR); |
Willy Tarreau | 4781b15 | 2021-04-06 13:53:36 +0200 | [diff] [blame] | 4998 | HA_ATOMIC_INC(&h2c->px_counters->conn_proto_err); |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 4999 | goto fail; |
| 5000 | } |
| 5001 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5002 | /* Trailers terminate a DATA sequence */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5003 | if (h2_make_htx_trailers(list, htx) <= 0) { |
| 5004 | TRACE_STATE("failed to append HTX trailers into rxbuf", H2_EV_RX_FRAME|H2_EV_RX_HDR|H2_EV_H2S_ERR, h2c->conn); |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5005 | goto fail; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5006 | } |
Willy Tarreau | 88d138e | 2019-01-02 19:38:14 +0100 | [diff] [blame] | 5007 | goto done; |
Willy Tarreau | 13278b4 | 2017-10-13 19:23:14 +0200 | [diff] [blame] | 5008 | } |
| 5009 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5010 | /* Transfer the payload of a DATA frame to the HTTP/1 side. The HTTP/2 frame |
Willy Tarreau | 61ea7dc | 2018-12-01 23:23:04 +0100 | [diff] [blame] | 5011 | * parser state is automatically updated. Returns > 0 if it could completely |
| 5012 | * send the current frame, 0 if it couldn't complete, in which case |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 5013 | * CS_EP_RCV_MORE must be checked to know if some data remain pending (an empty |
Willy Tarreau | 61ea7dc | 2018-12-01 23:23:04 +0100 | [diff] [blame] | 5014 | * DATA frame can return 0 as a valid result). Stream errors are reported in |
| 5015 | * h2s->errcode and connection errors in h2c->errcode. The caller must already |
| 5016 | * have checked the frame header and ensured that the frame was complete or the |
| 5017 | * buffer full. It changes the frame state to FRAME_A once done. |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 5018 | */ |
Willy Tarreau | 454b57b | 2018-02-26 15:50:05 +0100 | [diff] [blame] | 5019 | static int h2_frt_transfer_data(struct h2s *h2s) |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 5020 | { |
| 5021 | struct h2c *h2c = h2s->h2c; |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5022 | int block; |
Willy Tarreau | d755ea6 | 2018-02-26 15:44:54 +0100 | [diff] [blame] | 5023 | unsigned int flen = 0; |
Willy Tarreau | 61ea7dc | 2018-12-01 23:23:04 +0100 | [diff] [blame] | 5024 | struct htx *htx = NULL; |
Willy Tarreau | d755ea6 | 2018-02-26 15:44:54 +0100 | [diff] [blame] | 5025 | struct buffer *csbuf; |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5026 | unsigned int sent; |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 5027 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5028 | TRACE_ENTER(H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
| 5029 | |
Willy Tarreau | 8fc016d | 2017-12-11 18:27:15 +0100 | [diff] [blame] | 5030 | h2c->flags &= ~H2_CF_DEM_SFULL; |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 5031 | |
Olivier Houchard | 638b799 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 5032 | csbuf = h2_get_buf(h2c, &h2s->rxbuf); |
Willy Tarreau | d755ea6 | 2018-02-26 15:44:54 +0100 | [diff] [blame] | 5033 | if (!csbuf) { |
| 5034 | h2c->flags |= H2_CF_DEM_SALLOC; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5035 | TRACE_STATE("waiting for an h2s rxbuf", H2_EV_RX_FRAME|H2_EV_RX_DATA|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 454b57b | 2018-02-26 15:50:05 +0100 | [diff] [blame] | 5036 | goto fail; |
Willy Tarreau | d755ea6 | 2018-02-26 15:44:54 +0100 | [diff] [blame] | 5037 | } |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5038 | htx = htx_from_buf(csbuf); |
Willy Tarreau | d755ea6 | 2018-02-26 15:44:54 +0100 | [diff] [blame] | 5039 | |
Willy Tarreau | 61ea7dc | 2018-12-01 23:23:04 +0100 | [diff] [blame] | 5040 | try_again: |
Willy Tarreau | 8fc016d | 2017-12-11 18:27:15 +0100 | [diff] [blame] | 5041 | flen = h2c->dfl - h2c->dpl; |
| 5042 | if (!flen) |
Willy Tarreau | 4a28da1 | 2018-01-04 14:41:00 +0100 | [diff] [blame] | 5043 | goto end_transfer; |
Willy Tarreau | 8fc016d | 2017-12-11 18:27:15 +0100 | [diff] [blame] | 5044 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 5045 | if (flen > b_data(&h2c->dbuf)) { |
| 5046 | flen = b_data(&h2c->dbuf); |
Willy Tarreau | 8fc016d | 2017-12-11 18:27:15 +0100 | [diff] [blame] | 5047 | if (!flen) |
Willy Tarreau | 454b57b | 2018-02-26 15:50:05 +0100 | [diff] [blame] | 5048 | goto fail; |
Willy Tarreau | d755ea6 | 2018-02-26 15:44:54 +0100 | [diff] [blame] | 5049 | } |
| 5050 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5051 | block = htx_free_data_space(htx); |
| 5052 | if (!block) { |
| 5053 | h2c->flags |= H2_CF_DEM_SFULL; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5054 | TRACE_STATE("h2s rxbuf is full", H2_EV_RX_FRAME|H2_EV_RX_DATA|H2_EV_H2S_BLK, h2c->conn, h2s); |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5055 | goto fail; |
Willy Tarreau | eba10f2 | 2018-04-25 20:44:22 +0200 | [diff] [blame] | 5056 | } |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5057 | if (flen > block) |
| 5058 | flen = block; |
Willy Tarreau | eba10f2 | 2018-04-25 20:44:22 +0200 | [diff] [blame] | 5059 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5060 | /* here, flen is the max we can copy into the output buffer */ |
| 5061 | block = b_contig_data(&h2c->dbuf, 0); |
| 5062 | if (flen > block) |
| 5063 | flen = block; |
Willy Tarreau | eba10f2 | 2018-04-25 20:44:22 +0200 | [diff] [blame] | 5064 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5065 | sent = htx_add_data(htx, ist2(b_head(&h2c->dbuf), flen)); |
Willy Tarreau | 022e5e5 | 2020-09-10 09:33:15 +0200 | [diff] [blame] | 5066 | TRACE_DATA("move some data to h2s rxbuf", H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s, 0, (void *)(long)sent); |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 5067 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5068 | b_del(&h2c->dbuf, sent); |
| 5069 | h2c->dfl -= sent; |
| 5070 | h2c->rcvd_c += sent; |
| 5071 | h2c->rcvd_s += sent; // warning, this can also affect the closed streams! |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 5072 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5073 | if (h2s->flags & H2_SF_DATA_CLEN) { |
| 5074 | h2s->body_len -= sent; |
| 5075 | htx->extra = h2s->body_len; |
Willy Tarreau | eba10f2 | 2018-04-25 20:44:22 +0200 | [diff] [blame] | 5076 | } |
| 5077 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5078 | if (sent < flen) { |
Willy Tarreau | d755ea6 | 2018-02-26 15:44:54 +0100 | [diff] [blame] | 5079 | h2c->flags |= H2_CF_DEM_SFULL; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5080 | TRACE_STATE("h2s rxbuf is full", H2_EV_RX_FRAME|H2_EV_RX_DATA|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 454b57b | 2018-02-26 15:50:05 +0100 | [diff] [blame] | 5081 | goto fail; |
Willy Tarreau | 8fc016d | 2017-12-11 18:27:15 +0100 | [diff] [blame] | 5082 | } |
| 5083 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5084 | goto try_again; |
| 5085 | |
Willy Tarreau | 4a28da1 | 2018-01-04 14:41:00 +0100 | [diff] [blame] | 5086 | end_transfer: |
Willy Tarreau | 8fc016d | 2017-12-11 18:27:15 +0100 | [diff] [blame] | 5087 | /* here we're done with the frame, all the payload (except padding) was |
| 5088 | * transferred. |
| 5089 | */ |
Willy Tarreau | eba10f2 | 2018-04-25 20:44:22 +0200 | [diff] [blame] | 5090 | |
Christopher Faulet | 5be651d | 2021-01-22 15:28:03 +0100 | [diff] [blame] | 5091 | if (!(h2s->flags & H2_SF_BODY_TUNNEL) && (h2c->dff & H2_F_DATA_END_STREAM)) { |
| 5092 | /* no more data are expected for this message. This add the EOM |
| 5093 | * flag but only on the response path or if no tunnel attempt |
| 5094 | * was aborted. Otherwise (request path + tunnel abrted), the |
| 5095 | * EOM was already reported. |
| 5096 | */ |
Christopher Faulet | 3372432 | 2021-02-10 09:04:59 +0100 | [diff] [blame] | 5097 | if ((h2c->flags & H2_CF_IS_BACK) || !(h2s->flags & H2_SF_TUNNEL_ABRT)) { |
| 5098 | /* If we receive an empty DATA frame with ES flag while the HTX |
| 5099 | * message is empty, we must be sure to push a block to be sure |
| 5100 | * the HTX EOM flag will be handled on the other side. It is a |
| 5101 | * workaround because for now it is not possible to push empty |
| 5102 | * HTX DATA block. And without this block, there is no way to |
| 5103 | * "commit" the end of the message. |
| 5104 | */ |
| 5105 | if (htx_is_empty(htx)) { |
| 5106 | if (!htx_add_endof(htx, HTX_BLK_EOT)) |
| 5107 | goto fail; |
| 5108 | } |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5109 | htx->flags |= HTX_FL_EOM; |
Christopher Faulet | 3372432 | 2021-02-10 09:04:59 +0100 | [diff] [blame] | 5110 | } |
Willy Tarreau | eba10f2 | 2018-04-25 20:44:22 +0200 | [diff] [blame] | 5111 | } |
| 5112 | |
Willy Tarreau | d1023bb | 2018-03-22 16:53:12 +0100 | [diff] [blame] | 5113 | h2c->rcvd_c += h2c->dpl; |
| 5114 | h2c->rcvd_s += h2c->dpl; |
| 5115 | h2c->dpl = 0; |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 5116 | h2c->st0 = H2_CS_FRAME_A; // send the corresponding window update |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5117 | htx_to_buf(htx, csbuf); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5118 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
Willy Tarreau | 61ea7dc | 2018-12-01 23:23:04 +0100 | [diff] [blame] | 5119 | return 1; |
Willy Tarreau | 454b57b | 2018-02-26 15:50:05 +0100 | [diff] [blame] | 5120 | fail: |
Christopher Faulet | 27ba2dc | 2018-12-05 11:53:24 +0100 | [diff] [blame] | 5121 | if (htx) |
| 5122 | htx_to_buf(htx, csbuf); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5123 | TRACE_LEAVE(H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
Willy Tarreau | 454b57b | 2018-02-26 15:50:05 +0100 | [diff] [blame] | 5124 | return 0; |
Willy Tarreau | 454f905 | 2017-10-26 19:40:35 +0200 | [diff] [blame] | 5125 | } |
| 5126 | |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5127 | /* Try to send a HEADERS frame matching HTX response present in HTX message |
| 5128 | * <htx> for the H2 stream <h2s>. Returns the number of bytes sent. The caller |
| 5129 | * must check the stream's status to detect any error which might have happened |
| 5130 | * subsequently to a successful send. The htx blocks are automatically removed |
| 5131 | * from the message. The htx message is assumed to be valid since produced from |
| 5132 | * the internal code, hence it contains a start line, an optional series of |
| 5133 | * header blocks and an end of header, otherwise an invalid frame could be |
| 5134 | * emitted and the resulting htx message could be left in an inconsistent state. |
| 5135 | */ |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5136 | static size_t h2s_frt_make_resp_headers(struct h2s *h2s, struct htx *htx) |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5137 | { |
Christopher Faulet | e4ab11b | 2019-06-11 15:05:37 +0200 | [diff] [blame] | 5138 | struct http_hdr list[global.tune.max_http_hdr]; |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5139 | struct h2c *h2c = h2s->h2c; |
| 5140 | struct htx_blk *blk; |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5141 | struct buffer outbuf; |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5142 | struct buffer *mbuf; |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5143 | struct htx_sl *sl; |
| 5144 | enum htx_blk_type type; |
| 5145 | int es_now = 0; |
| 5146 | int ret = 0; |
| 5147 | int hdr; |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5148 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5149 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
| 5150 | |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5151 | if (h2c_mux_busy(h2c, h2s)) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5152 | TRACE_STATE("mux output busy", H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5153 | h2s->flags |= H2_SF_BLK_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5154 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5155 | return 0; |
| 5156 | } |
| 5157 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5158 | /* get the start line (we do have one) and the rest of the headers, |
| 5159 | * that we dump starting at header 0 */ |
| 5160 | sl = NULL; |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5161 | hdr = 0; |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5162 | for (blk = htx_get_head_blk(htx); blk; blk = htx_get_next_blk(htx, blk)) { |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5163 | type = htx_get_blk_type(blk); |
| 5164 | |
| 5165 | if (type == HTX_BLK_UNUSED) |
| 5166 | continue; |
| 5167 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5168 | if (type == HTX_BLK_EOH) |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5169 | break; |
| 5170 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5171 | if (type == HTX_BLK_HDR) { |
Christopher Faulet | 5649813 | 2021-01-29 11:39:43 +0100 | [diff] [blame] | 5172 | BUG_ON(!sl); /* The start-line mut be defined before any headers */ |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5173 | if (unlikely(hdr >= sizeof(list)/sizeof(list[0]) - 1)) { |
| 5174 | TRACE_ERROR("too many headers", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_ERR, h2c->conn, h2s); |
| 5175 | goto fail; |
| 5176 | } |
| 5177 | |
| 5178 | list[hdr].n = htx_get_blk_name(htx, blk); |
| 5179 | list[hdr].v = htx_get_blk_value(htx, blk); |
| 5180 | hdr++; |
| 5181 | } |
| 5182 | else if (type == HTX_BLK_RES_SL) { |
Christopher Faulet | 5649813 | 2021-01-29 11:39:43 +0100 | [diff] [blame] | 5183 | BUG_ON(sl); /* Only one start-line expected */ |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5184 | sl = htx_get_blk_ptr(htx, blk); |
| 5185 | h2s->status = sl->info.res.status; |
Christopher Faulet | 7d247f0 | 2020-12-02 14:26:36 +0100 | [diff] [blame] | 5186 | if (h2s->status == 204 || h2s->status == 304) |
| 5187 | h2s->flags |= H2_SF_BODYLESS_RESP; |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5188 | if (h2s->status < 100 || h2s->status > 999) { |
| 5189 | TRACE_ERROR("will not encode an invalid status code", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_ERR, h2c->conn, h2s); |
| 5190 | goto fail; |
| 5191 | } |
| 5192 | else if (h2s->status == 101) { |
Amaury Denoyelle | efe2276 | 2020-12-11 17:53:08 +0100 | [diff] [blame] | 5193 | if (unlikely(h2s->flags & H2_SF_EXT_CONNECT_RCVD)) { |
| 5194 | /* If an Extended CONNECT has been received, we need to convert 101 to 200 */ |
| 5195 | h2s->status = 200; |
| 5196 | h2s->flags &= ~H2_SF_EXT_CONNECT_RCVD; |
| 5197 | } |
| 5198 | else { |
| 5199 | /* Otherwise, 101 responses are not supported in H2, so return a error (RFC7540#8.1.1) */ |
| 5200 | TRACE_ERROR("will not encode an invalid status code", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_ERR, h2c->conn, h2s); |
| 5201 | goto fail; |
| 5202 | } |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5203 | } |
| 5204 | else if ((h2s->flags & H2_SF_BODY_TUNNEL) && h2s->status >= 300) { |
| 5205 | /* Abort the tunnel attempt */ |
| 5206 | h2s->flags &= ~H2_SF_BODY_TUNNEL; |
| 5207 | h2s->flags |= H2_SF_TUNNEL_ABRT; |
| 5208 | } |
| 5209 | } |
| 5210 | else { |
| 5211 | TRACE_ERROR("will not encode unexpected htx block", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_ERR, h2c->conn, h2s); |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5212 | goto fail; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5213 | } |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5214 | } |
| 5215 | |
Christopher Faulet | 5649813 | 2021-01-29 11:39:43 +0100 | [diff] [blame] | 5216 | /* The start-line me be defined */ |
| 5217 | BUG_ON(!sl); |
| 5218 | |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5219 | /* marker for end of headers */ |
| 5220 | list[hdr].n = ist(""); |
| 5221 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5222 | mbuf = br_tail(h2c->mbuf); |
| 5223 | retry: |
| 5224 | if (!h2_get_buf(h2c, mbuf)) { |
| 5225 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 5226 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5227 | TRACE_STATE("waiting for room in output buffer", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5228 | return 0; |
| 5229 | } |
| 5230 | |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5231 | chunk_reset(&outbuf); |
| 5232 | |
| 5233 | while (1) { |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5234 | outbuf = b_make(b_tail(mbuf), b_contig_space(mbuf), 0, 0); |
| 5235 | if (outbuf.size >= 9 || !b_space_wraps(mbuf)) |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5236 | break; |
| 5237 | realign_again: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5238 | b_slow_realign(mbuf, trash.area, b_data(mbuf)); |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5239 | } |
| 5240 | |
| 5241 | if (outbuf.size < 9) |
| 5242 | goto full; |
| 5243 | |
| 5244 | /* len: 0x000000 (fill later), type: 1(HEADERS), flags: ENDH=4 */ |
| 5245 | memcpy(outbuf.area, "\x00\x00\x00\x01\x04", 5); |
| 5246 | write_n32(outbuf.area + 5, h2s->id); // 4 bytes |
| 5247 | outbuf.data = 9; |
| 5248 | |
Willy Tarreau | 39a0a1e | 2022-01-13 16:00:12 +0100 | [diff] [blame] | 5249 | if ((h2c->flags & (H2_CF_SHTS_UPDATED|H2_CF_DTSU_EMITTED)) == H2_CF_SHTS_UPDATED) { |
| 5250 | /* SETTINGS_HEADER_TABLE_SIZE changed, we must send an HPACK |
| 5251 | * dynamic table size update so that some clients are not |
| 5252 | * confused. In practice we only need to send the DTSU when the |
| 5253 | * advertised size is lower than the current one, and since we |
| 5254 | * don't use it and don't care about the default 4096 bytes, |
| 5255 | * we only ack it with a zero size thus we at most have to deal |
| 5256 | * with this once. See RFC7541#4.2 and #6.3 for the spec, and |
| 5257 | * below for the whole context and interoperability risks: |
| 5258 | * https://lists.w3.org/Archives/Public/ietf-http-wg/2021OctDec/0235.html |
| 5259 | */ |
| 5260 | if (b_room(&outbuf) < 1) |
| 5261 | goto full; |
| 5262 | outbuf.area[outbuf.data++] = 0x20; // HPACK DTSU 0 bytes |
| 5263 | |
| 5264 | /* let's not update the flags now but only once the buffer is |
| 5265 | * really committed. |
| 5266 | */ |
| 5267 | } |
| 5268 | |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5269 | /* encode status, which necessarily is the first one */ |
Willy Tarreau | aafdf58 | 2018-12-10 18:06:40 +0100 | [diff] [blame] | 5270 | if (!hpack_encode_int_status(&outbuf, h2s->status)) { |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5271 | if (b_space_wraps(mbuf)) |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5272 | goto realign_again; |
| 5273 | goto full; |
| 5274 | } |
| 5275 | |
| 5276 | /* encode all headers, stop at empty name */ |
| 5277 | for (hdr = 0; hdr < sizeof(list)/sizeof(list[0]); hdr++) { |
| 5278 | /* these ones do not exist in H2 and must be dropped. */ |
| 5279 | if (isteq(list[hdr].n, ist("connection")) || |
| 5280 | isteq(list[hdr].n, ist("proxy-connection")) || |
| 5281 | isteq(list[hdr].n, ist("keep-alive")) || |
| 5282 | isteq(list[hdr].n, ist("upgrade")) || |
| 5283 | isteq(list[hdr].n, ist("transfer-encoding"))) |
| 5284 | continue; |
| 5285 | |
Christopher Faulet | 86d144c | 2019-08-14 16:32:25 +0200 | [diff] [blame] | 5286 | /* Skip all pseudo-headers */ |
| 5287 | if (*(list[hdr].n.ptr) == ':') |
| 5288 | continue; |
| 5289 | |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5290 | if (isteq(list[hdr].n, ist(""))) |
| 5291 | break; // end |
| 5292 | |
| 5293 | if (!hpack_encode_header(&outbuf, list[hdr].n, list[hdr].v)) { |
| 5294 | /* output full */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5295 | if (b_space_wraps(mbuf)) |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5296 | goto realign_again; |
| 5297 | goto full; |
| 5298 | } |
| 5299 | } |
| 5300 | |
Willy Tarreau | cb985a4 | 2019-10-07 16:56:34 +0200 | [diff] [blame] | 5301 | /* update the frame's size */ |
| 5302 | h2_set_frame_size(outbuf.area, outbuf.data - 9); |
| 5303 | |
| 5304 | if (outbuf.data > h2c->mfs + 9) { |
| 5305 | if (!h2_fragment_headers(&outbuf, h2c->mfs)) { |
| 5306 | /* output full */ |
| 5307 | if (b_space_wraps(mbuf)) |
| 5308 | goto realign_again; |
| 5309 | goto full; |
| 5310 | } |
| 5311 | } |
| 5312 | |
Willy Tarreau | 3a53707 | 2021-06-17 08:40:04 +0200 | [diff] [blame] | 5313 | TRACE_USER("sent H2 response ", H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s, htx); |
| 5314 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5315 | /* remove all header blocks including the EOH and compute the |
| 5316 | * corresponding size. |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5317 | */ |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5318 | ret = 0; |
| 5319 | blk = htx_get_head_blk(htx); |
| 5320 | while (blk) { |
| 5321 | type = htx_get_blk_type(blk); |
| 5322 | ret += htx_get_blksz(blk); |
| 5323 | blk = htx_remove_blk(htx, blk); |
| 5324 | /* The removed block is the EOH */ |
| 5325 | if (type == HTX_BLK_EOH) |
| 5326 | break; |
Christopher Faulet | 5be651d | 2021-01-22 15:28:03 +0100 | [diff] [blame] | 5327 | } |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5328 | |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 5329 | if (!h2s->cs || h2s->endp->flags & CS_EP_SHW) { |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5330 | /* Response already closed: add END_STREAM */ |
| 5331 | es_now = 1; |
| 5332 | } |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5333 | else if ((htx->flags & HTX_FL_EOM) && htx_is_empty(htx) && h2s->status >= 200) { |
| 5334 | /* EOM+empty: we may need to add END_STREAM except for 1xx |
Christopher Faulet | 991febd | 2020-12-02 15:17:31 +0100 | [diff] [blame] | 5335 | * responses and tunneled response. |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5336 | */ |
Christopher Faulet | 991febd | 2020-12-02 15:17:31 +0100 | [diff] [blame] | 5337 | if (!(h2s->flags & H2_SF_BODY_TUNNEL) || h2s->status >= 300) |
| 5338 | es_now = 1; |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5339 | } |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5340 | |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5341 | if (es_now) |
| 5342 | outbuf.area[4] |= H2_F_HEADERS_END_STREAM; |
| 5343 | |
| 5344 | /* commit the H2 response */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5345 | b_add(mbuf, outbuf.data); |
Christopher Faulet | 0b46548 | 2019-02-19 15:14:23 +0100 | [diff] [blame] | 5346 | |
| 5347 | /* indicates the HEADERS frame was sent, except for 1xx responses. For |
| 5348 | * 1xx responses, another HEADERS frame is expected. |
| 5349 | */ |
Christopher Faulet | 8989942 | 2020-12-07 18:24:43 +0100 | [diff] [blame] | 5350 | if (h2s->status >= 200) |
Christopher Faulet | 0b46548 | 2019-02-19 15:14:23 +0100 | [diff] [blame] | 5351 | h2s->flags |= H2_SF_HEADERS_SENT; |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5352 | |
Willy Tarreau | 39a0a1e | 2022-01-13 16:00:12 +0100 | [diff] [blame] | 5353 | if (h2c->flags & H2_CF_SHTS_UPDATED) { |
| 5354 | /* was sent above */ |
| 5355 | h2c->flags |= H2_CF_DTSU_EMITTED; |
Willy Tarreau | c7d8548 | 2022-02-16 14:28:14 +0100 | [diff] [blame] | 5356 | h2c->flags &= ~H2_CF_SHTS_UPDATED; |
Willy Tarreau | 39a0a1e | 2022-01-13 16:00:12 +0100 | [diff] [blame] | 5357 | } |
| 5358 | |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5359 | if (es_now) { |
| 5360 | h2s->flags |= H2_SF_ES_SENT; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5361 | TRACE_PROTO("setting ES on HEADERS frame", H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s, htx); |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5362 | if (h2s->st == H2_SS_OPEN) |
| 5363 | h2s->st = H2_SS_HLOC; |
| 5364 | else |
| 5365 | h2s_close(h2s); |
| 5366 | } |
| 5367 | |
| 5368 | /* OK we could properly deliver the response */ |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5369 | end: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5370 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5371 | return ret; |
| 5372 | full: |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5373 | if ((mbuf = br_tail_add(h2c->mbuf)) != NULL) |
| 5374 | goto retry; |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5375 | h2c->flags |= H2_CF_MUX_MFULL; |
| 5376 | h2s->flags |= H2_SF_BLK_MROOM; |
| 5377 | ret = 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5378 | TRACE_STATE("mux buffer full", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 5379 | goto end; |
| 5380 | fail: |
| 5381 | /* unparsable HTX messages, too large ones to be produced in the local |
| 5382 | * list etc go here (unrecoverable errors). |
| 5383 | */ |
| 5384 | h2s_error(h2s, H2_ERR_INTERNAL_ERROR); |
| 5385 | ret = 0; |
| 5386 | goto end; |
| 5387 | } |
| 5388 | |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5389 | /* Try to send a HEADERS frame matching HTX request present in HTX message |
| 5390 | * <htx> for the H2 stream <h2s>. Returns the number of bytes sent. The caller |
| 5391 | * must check the stream's status to detect any error which might have happened |
| 5392 | * subsequently to a successful send. The htx blocks are automatically removed |
| 5393 | * from the message. The htx message is assumed to be valid since produced from |
| 5394 | * the internal code, hence it contains a start line, an optional series of |
| 5395 | * header blocks and an end of header, otherwise an invalid frame could be |
| 5396 | * emitted and the resulting htx message could be left in an inconsistent state. |
| 5397 | */ |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 5398 | static size_t h2s_bck_make_req_headers(struct h2s *h2s, struct htx *htx) |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5399 | { |
Christopher Faulet | e4ab11b | 2019-06-11 15:05:37 +0200 | [diff] [blame] | 5400 | struct http_hdr list[global.tune.max_http_hdr]; |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5401 | struct h2c *h2c = h2s->h2c; |
| 5402 | struct htx_blk *blk; |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5403 | struct buffer outbuf; |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5404 | struct buffer *mbuf; |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5405 | struct htx_sl *sl; |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5406 | struct ist meth, uri, auth, host = IST_NULL; |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5407 | enum htx_blk_type type; |
| 5408 | int es_now = 0; |
| 5409 | int ret = 0; |
| 5410 | int hdr; |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5411 | int extended_connect = 0; |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5412 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5413 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
| 5414 | |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5415 | if (h2c_mux_busy(h2c, h2s)) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5416 | TRACE_STATE("mux output busy", H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5417 | h2s->flags |= H2_SF_BLK_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5418 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5419 | return 0; |
| 5420 | } |
| 5421 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5422 | /* get the start line (we do have one) and the rest of the headers, |
| 5423 | * that we dump starting at header 0 */ |
| 5424 | sl = NULL; |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5425 | hdr = 0; |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5426 | for (blk = htx_get_head_blk(htx); blk; blk = htx_get_next_blk(htx, blk)) { |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5427 | type = htx_get_blk_type(blk); |
| 5428 | |
| 5429 | if (type == HTX_BLK_UNUSED) |
| 5430 | continue; |
| 5431 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5432 | if (type == HTX_BLK_EOH) |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5433 | break; |
| 5434 | |
Christopher Faulet | c29b4bf | 2021-01-29 11:49:16 +0100 | [diff] [blame] | 5435 | if (type == HTX_BLK_HDR) { |
Christopher Faulet | 5649813 | 2021-01-29 11:39:43 +0100 | [diff] [blame] | 5436 | BUG_ON(!sl); /* The start-line mut be defined before any headers */ |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5437 | if (unlikely(hdr >= sizeof(list)/sizeof(list[0]) - 1)) { |
| 5438 | TRACE_ERROR("too many headers", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_ERR, h2c->conn, h2s); |
| 5439 | goto fail; |
| 5440 | } |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5441 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5442 | list[hdr].n = htx_get_blk_name(htx, blk); |
| 5443 | list[hdr].v = htx_get_blk_value(htx, blk); |
Christopher Faulet | 67d5809 | 2019-10-02 10:51:38 +0200 | [diff] [blame] | 5444 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5445 | /* Skip header if same name is used to add the server name */ |
Tim Duesterhus | b4b0377 | 2022-03-05 00:52:43 +0100 | [diff] [blame] | 5446 | if ((h2c->flags & H2_CF_IS_BACK) && isttest(h2c->proxy->server_id_hdr_name) && |
| 5447 | isteq(list[hdr].n, h2c->proxy->server_id_hdr_name)) |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5448 | continue; |
Christopher Faulet | 67d5809 | 2019-10-02 10:51:38 +0200 | [diff] [blame] | 5449 | |
Ilya Shipitsin | acf8459 | 2021-02-06 22:29:08 +0500 | [diff] [blame] | 5450 | /* Convert connection: upgrade to Extended connect from rfc 8441 */ |
Christopher Faulet | 52a5ec2 | 2021-09-09 09:52:51 +0200 | [diff] [blame] | 5451 | if ((sl->flags & HTX_SL_F_CONN_UPG) && isteqi(list[hdr].n, ist("connection"))) { |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5452 | /* rfc 7230 #6.1 Connection = list of tokens */ |
| 5453 | struct ist connection_ist = list[hdr].v; |
| 5454 | do { |
| 5455 | if (isteqi(iststop(connection_ist, ','), |
| 5456 | ist("upgrade"))) { |
Amaury Denoyelle | 0df0436 | 2021-10-18 09:43:29 +0200 | [diff] [blame] | 5457 | if (!(h2c->flags & H2_CF_RCVD_RFC8441)) { |
| 5458 | TRACE_STATE("reject upgrade because of no RFC8441 support", H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
| 5459 | goto fail; |
| 5460 | } |
| 5461 | |
Amaury Denoyelle | e0c258c | 2021-10-18 10:05:16 +0200 | [diff] [blame] | 5462 | TRACE_STATE("convert upgrade to extended connect method", H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5463 | h2s->flags |= (H2_SF_BODY_TUNNEL|H2_SF_EXT_CONNECT_SENT); |
| 5464 | sl->info.req.meth = HTTP_METH_CONNECT; |
| 5465 | meth = ist("CONNECT"); |
| 5466 | |
| 5467 | extended_connect = 1; |
| 5468 | break; |
| 5469 | } |
| 5470 | |
| 5471 | connection_ist = istadv(istfind(connection_ist, ','), 1); |
| 5472 | } while (istlen(connection_ist)); |
| 5473 | } |
| 5474 | |
Christopher Faulet | 52a5ec2 | 2021-09-09 09:52:51 +0200 | [diff] [blame] | 5475 | if ((sl->flags & HTX_SL_F_CONN_UPG) && isteq(list[hdr].n, ist("upgrade"))) { |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5476 | /* rfc 7230 #6.7 Upgrade = list of protocols |
| 5477 | * rfc 8441 #4 Extended connect = :protocol is single-valued |
| 5478 | * |
| 5479 | * only first HTTP/1 protocol is preserved |
| 5480 | */ |
| 5481 | const struct ist protocol = iststop(list[hdr].v, ','); |
| 5482 | /* upgrade_protocol field is 16 bytes long in h2s */ |
| 5483 | istpad(h2s->upgrade_protocol, isttrim(protocol, 15)); |
| 5484 | } |
| 5485 | |
| 5486 | if (isteq(list[hdr].n, ist("host"))) |
| 5487 | host = list[hdr].v; |
| 5488 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5489 | hdr++; |
| 5490 | } |
Christopher Faulet | c29b4bf | 2021-01-29 11:49:16 +0100 | [diff] [blame] | 5491 | else if (type == HTX_BLK_REQ_SL) { |
| 5492 | BUG_ON(sl); /* Only one start-line expected */ |
| 5493 | sl = htx_get_blk_ptr(htx, blk); |
| 5494 | meth = htx_sl_req_meth(sl); |
| 5495 | uri = htx_sl_req_uri(sl); |
| 5496 | if (sl->info.req.meth == HTTP_METH_HEAD) |
| 5497 | h2s->flags |= H2_SF_BODYLESS_RESP; |
| 5498 | if (unlikely(uri.len == 0)) { |
| 5499 | TRACE_ERROR("no URI in HTX request", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_ERR, h2c->conn, h2s); |
| 5500 | goto fail; |
| 5501 | } |
| 5502 | } |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5503 | else { |
| 5504 | TRACE_ERROR("will not encode unexpected htx block", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_ERR, h2c->conn, h2s); |
| 5505 | goto fail; |
| 5506 | } |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5507 | } |
| 5508 | |
Christopher Faulet | 5649813 | 2021-01-29 11:39:43 +0100 | [diff] [blame] | 5509 | /* The start-line me be defined */ |
| 5510 | BUG_ON(!sl); |
| 5511 | |
Christopher Faulet | 72ba6cd | 2019-09-24 16:20:05 +0200 | [diff] [blame] | 5512 | /* Now add the server name to a header (if requested) */ |
Tim Duesterhus | b4b0377 | 2022-03-05 00:52:43 +0100 | [diff] [blame] | 5513 | if ((h2c->flags & H2_CF_IS_BACK) && isttest(h2c->proxy->server_id_hdr_name)) { |
Christopher Faulet | 72ba6cd | 2019-09-24 16:20:05 +0200 | [diff] [blame] | 5514 | struct server *srv = objt_server(h2c->conn->target); |
| 5515 | |
| 5516 | if (srv) { |
Tim Duesterhus | b4b0377 | 2022-03-05 00:52:43 +0100 | [diff] [blame] | 5517 | list[hdr].n = h2c->proxy->server_id_hdr_name; |
Christopher Faulet | 72ba6cd | 2019-09-24 16:20:05 +0200 | [diff] [blame] | 5518 | list[hdr].v = ist(srv->id); |
| 5519 | hdr++; |
| 5520 | } |
| 5521 | } |
| 5522 | |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5523 | /* marker for end of headers */ |
| 5524 | list[hdr].n = ist(""); |
| 5525 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5526 | mbuf = br_tail(h2c->mbuf); |
| 5527 | retry: |
| 5528 | if (!h2_get_buf(h2c, mbuf)) { |
| 5529 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 5530 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5531 | TRACE_STATE("waiting for room in output buffer", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5532 | return 0; |
| 5533 | } |
| 5534 | |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5535 | chunk_reset(&outbuf); |
| 5536 | |
| 5537 | while (1) { |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5538 | outbuf = b_make(b_tail(mbuf), b_contig_space(mbuf), 0, 0); |
| 5539 | if (outbuf.size >= 9 || !b_space_wraps(mbuf)) |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5540 | break; |
| 5541 | realign_again: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5542 | b_slow_realign(mbuf, trash.area, b_data(mbuf)); |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5543 | } |
| 5544 | |
| 5545 | if (outbuf.size < 9) |
| 5546 | goto full; |
| 5547 | |
| 5548 | /* len: 0x000000 (fill later), type: 1(HEADERS), flags: ENDH=4 */ |
| 5549 | memcpy(outbuf.area, "\x00\x00\x00\x01\x04", 5); |
| 5550 | write_n32(outbuf.area + 5, h2s->id); // 4 bytes |
| 5551 | outbuf.data = 9; |
| 5552 | |
| 5553 | /* encode the method, which necessarily is the first one */ |
Willy Tarreau | bdabc3a | 2018-12-10 18:25:11 +0100 | [diff] [blame] | 5554 | if (!hpack_encode_method(&outbuf, sl->info.req.meth, meth)) { |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5555 | if (b_space_wraps(mbuf)) |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5556 | goto realign_again; |
| 5557 | goto full; |
| 5558 | } |
| 5559 | |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5560 | auth = ist(NULL); |
| 5561 | |
Willy Tarreau | 5be92ff | 2019-02-01 15:51:59 +0100 | [diff] [blame] | 5562 | /* RFC7540 #8.3: the CONNECT method must have : |
| 5563 | * - :authority set to the URI part (host:port) |
| 5564 | * - :method set to CONNECT |
| 5565 | * - :scheme and :path omitted |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5566 | * |
| 5567 | * Note that this is not applicable in case of the Extended CONNECT |
| 5568 | * protocol from rfc 8441. |
Willy Tarreau | 5be92ff | 2019-02-01 15:51:59 +0100 | [diff] [blame] | 5569 | */ |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5570 | if (unlikely(sl->info.req.meth == HTTP_METH_CONNECT) && !extended_connect) { |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5571 | auth = uri; |
| 5572 | |
| 5573 | if (!hpack_encode_header(&outbuf, ist(":authority"), auth)) { |
| 5574 | /* output full */ |
| 5575 | if (b_space_wraps(mbuf)) |
| 5576 | goto realign_again; |
| 5577 | goto full; |
| 5578 | } |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5579 | h2s->flags |= H2_SF_BODY_TUNNEL; |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5580 | } else { |
| 5581 | /* other methods need a :scheme. If an authority is known from |
| 5582 | * the request line, it must be sent, otherwise only host is |
| 5583 | * sent. Host is never sent as the authority. |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5584 | * |
| 5585 | * This code is also applicable for Extended CONNECT protocol |
| 5586 | * from rfc 8441. |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5587 | */ |
| 5588 | struct ist scheme = { }; |
Christopher Faulet | 3b44c54 | 2019-06-14 10:46:51 +0200 | [diff] [blame] | 5589 | |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5590 | if (uri.ptr[0] != '/' && uri.ptr[0] != '*') { |
| 5591 | /* the URI seems to start with a scheme */ |
| 5592 | int len = 1; |
| 5593 | |
| 5594 | while (len < uri.len && uri.ptr[len] != ':') |
| 5595 | len++; |
| 5596 | |
| 5597 | if (len + 2 < uri.len && uri.ptr[len + 1] == '/' && uri.ptr[len + 2] == '/') { |
| 5598 | /* make the uri start at the authority now */ |
Tim Duesterhus | 9f75ed1 | 2021-03-02 18:57:26 +0100 | [diff] [blame] | 5599 | scheme = ist2(uri.ptr, len); |
Tim Duesterhus | 154374c | 2021-03-02 18:57:27 +0100 | [diff] [blame] | 5600 | uri = istadv(uri, len + 3); |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5601 | |
| 5602 | /* find the auth part of the URI */ |
Tim Duesterhus | 92c696e | 2021-02-28 16:11:36 +0100 | [diff] [blame] | 5603 | auth = ist2(uri.ptr, 0); |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5604 | while (auth.len < uri.len && auth.ptr[auth.len] != '/') |
| 5605 | auth.len++; |
| 5606 | |
Tim Duesterhus | 154374c | 2021-03-02 18:57:27 +0100 | [diff] [blame] | 5607 | uri = istadv(uri, auth.len); |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5608 | } |
| 5609 | } |
| 5610 | |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5611 | /* For Extended CONNECT, the :authority must be present. |
| 5612 | * Use host value for it. |
| 5613 | */ |
| 5614 | if (unlikely(extended_connect) && isttest(host)) |
| 5615 | auth = host; |
| 5616 | |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5617 | if (!scheme.len) { |
| 5618 | /* no explicit scheme, we're using an origin-form URI, |
| 5619 | * probably from an H1 request transcoded to H2 via an |
| 5620 | * external layer, then received as H2 without authority. |
| 5621 | * So we have to look up the scheme from the HTX flags. |
| 5622 | * In such a case only http and https are possible, and |
| 5623 | * https is the default (sent by browsers). |
| 5624 | */ |
| 5625 | if ((sl->flags & (HTX_SL_F_HAS_SCHM|HTX_SL_F_SCHM_HTTP)) == (HTX_SL_F_HAS_SCHM|HTX_SL_F_SCHM_HTTP)) |
| 5626 | scheme = ist("http"); |
| 5627 | else |
| 5628 | scheme = ist("https"); |
| 5629 | } |
Christopher Faulet | 3b44c54 | 2019-06-14 10:46:51 +0200 | [diff] [blame] | 5630 | |
| 5631 | if (!hpack_encode_scheme(&outbuf, scheme)) { |
Willy Tarreau | 5be92ff | 2019-02-01 15:51:59 +0100 | [diff] [blame] | 5632 | /* output full */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5633 | if (b_space_wraps(mbuf)) |
Willy Tarreau | 5be92ff | 2019-02-01 15:51:59 +0100 | [diff] [blame] | 5634 | goto realign_again; |
| 5635 | goto full; |
| 5636 | } |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5637 | |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5638 | if (auth.len && !hpack_encode_header(&outbuf, ist(":authority"), auth)) { |
Willy Tarreau | 5be92ff | 2019-02-01 15:51:59 +0100 | [diff] [blame] | 5639 | /* output full */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5640 | if (b_space_wraps(mbuf)) |
Willy Tarreau | 5be92ff | 2019-02-01 15:51:59 +0100 | [diff] [blame] | 5641 | goto realign_again; |
| 5642 | goto full; |
| 5643 | } |
Willy Tarreau | 053c157 | 2019-02-01 16:13:59 +0100 | [diff] [blame] | 5644 | |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5645 | /* encode the path. RFC7540#8.1.2.3: if path is empty it must |
| 5646 | * be sent as '/' or '*'. |
| 5647 | */ |
| 5648 | if (unlikely(!uri.len)) { |
| 5649 | if (sl->info.req.meth == HTTP_METH_OPTIONS) |
| 5650 | uri = ist("*"); |
| 5651 | else |
| 5652 | uri = ist("/"); |
Willy Tarreau | 053c157 | 2019-02-01 16:13:59 +0100 | [diff] [blame] | 5653 | } |
Willy Tarreau | 053c157 | 2019-02-01 16:13:59 +0100 | [diff] [blame] | 5654 | |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5655 | if (!hpack_encode_path(&outbuf, uri)) { |
| 5656 | /* output full */ |
| 5657 | if (b_space_wraps(mbuf)) |
| 5658 | goto realign_again; |
| 5659 | goto full; |
| 5660 | } |
Amaury Denoyelle | 9bf9573 | 2020-12-11 17:53:06 +0100 | [diff] [blame] | 5661 | |
| 5662 | /* encode the pseudo-header protocol from rfc8441 if using |
| 5663 | * Extended CONNECT method. |
| 5664 | */ |
| 5665 | if (unlikely(extended_connect)) { |
| 5666 | const struct ist protocol = ist(h2s->upgrade_protocol); |
| 5667 | if (isttest(protocol)) { |
| 5668 | if (!hpack_encode_header(&outbuf, |
| 5669 | ist(":protocol"), |
| 5670 | protocol)) { |
| 5671 | /* output full */ |
| 5672 | if (b_space_wraps(mbuf)) |
| 5673 | goto realign_again; |
| 5674 | goto full; |
| 5675 | } |
| 5676 | } |
| 5677 | } |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5678 | } |
| 5679 | |
Willy Tarreau | b8ce890 | 2019-10-08 18:16:18 +0200 | [diff] [blame] | 5680 | /* encode all headers, stop at empty name. Host is only sent if we |
| 5681 | * do not provide an authority. |
| 5682 | */ |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5683 | for (hdr = 0; hdr < sizeof(list)/sizeof(list[0]); hdr++) { |
Willy Tarreau | bb2c4ae | 2020-01-24 09:07:53 +0100 | [diff] [blame] | 5684 | struct ist n = list[hdr].n; |
| 5685 | struct ist v = list[hdr].v; |
| 5686 | |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5687 | /* these ones do not exist in H2 and must be dropped. */ |
Willy Tarreau | bb2c4ae | 2020-01-24 09:07:53 +0100 | [diff] [blame] | 5688 | if (isteq(n, ist("connection")) || |
| 5689 | (auth.len && isteq(n, ist("host"))) || |
| 5690 | isteq(n, ist("proxy-connection")) || |
| 5691 | isteq(n, ist("keep-alive")) || |
| 5692 | isteq(n, ist("upgrade")) || |
| 5693 | isteq(n, ist("transfer-encoding"))) |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5694 | continue; |
| 5695 | |
Willy Tarreau | bb2c4ae | 2020-01-24 09:07:53 +0100 | [diff] [blame] | 5696 | if (isteq(n, ist("te"))) { |
| 5697 | /* "te" may only be sent with "trailers" if this value |
| 5698 | * is present, otherwise it must be deleted. |
| 5699 | */ |
| 5700 | v = istist(v, ist("trailers")); |
Tim Duesterhus | 7b5777d | 2021-03-02 18:57:28 +0100 | [diff] [blame] | 5701 | if (!isttest(v) || (v.len > 8 && v.ptr[8] != ',')) |
Willy Tarreau | bb2c4ae | 2020-01-24 09:07:53 +0100 | [diff] [blame] | 5702 | continue; |
| 5703 | v = ist("trailers"); |
| 5704 | } |
| 5705 | |
Christopher Faulet | 86d144c | 2019-08-14 16:32:25 +0200 | [diff] [blame] | 5706 | /* Skip all pseudo-headers */ |
Willy Tarreau | bb2c4ae | 2020-01-24 09:07:53 +0100 | [diff] [blame] | 5707 | if (*(n.ptr) == ':') |
Christopher Faulet | 86d144c | 2019-08-14 16:32:25 +0200 | [diff] [blame] | 5708 | continue; |
| 5709 | |
Willy Tarreau | bb2c4ae | 2020-01-24 09:07:53 +0100 | [diff] [blame] | 5710 | if (isteq(n, ist(""))) |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5711 | break; // end |
| 5712 | |
Willy Tarreau | bb2c4ae | 2020-01-24 09:07:53 +0100 | [diff] [blame] | 5713 | if (!hpack_encode_header(&outbuf, n, v)) { |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5714 | /* output full */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5715 | if (b_space_wraps(mbuf)) |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5716 | goto realign_again; |
| 5717 | goto full; |
| 5718 | } |
| 5719 | } |
| 5720 | |
Willy Tarreau | cb985a4 | 2019-10-07 16:56:34 +0200 | [diff] [blame] | 5721 | /* update the frame's size */ |
| 5722 | h2_set_frame_size(outbuf.area, outbuf.data - 9); |
| 5723 | |
| 5724 | if (outbuf.data > h2c->mfs + 9) { |
| 5725 | if (!h2_fragment_headers(&outbuf, h2c->mfs)) { |
| 5726 | /* output full */ |
| 5727 | if (b_space_wraps(mbuf)) |
| 5728 | goto realign_again; |
| 5729 | goto full; |
| 5730 | } |
| 5731 | } |
| 5732 | |
Willy Tarreau | 3a53707 | 2021-06-17 08:40:04 +0200 | [diff] [blame] | 5733 | TRACE_USER("sent H2 request ", H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s, htx); |
| 5734 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5735 | /* remove all header blocks including the EOH and compute the |
| 5736 | * corresponding size. |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5737 | */ |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5738 | ret = 0; |
| 5739 | blk = htx_get_head_blk(htx); |
| 5740 | while (blk) { |
| 5741 | type = htx_get_blk_type(blk); |
| 5742 | ret += htx_get_blksz(blk); |
| 5743 | blk = htx_remove_blk(htx, blk); |
| 5744 | /* The removed block is the EOH */ |
| 5745 | if (type == HTX_BLK_EOH) |
| 5746 | break; |
Christopher Faulet | d0db423 | 2021-01-22 11:46:30 +0100 | [diff] [blame] | 5747 | } |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5748 | |
Christopher Faulet | 9ec2f4d | 2022-03-23 15:15:29 +0100 | [diff] [blame] | 5749 | if (!h2s->cs || h2s->endp->flags & CS_EP_SHW) { |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5750 | /* Request already closed: add END_STREAM */ |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5751 | es_now = 1; |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5752 | } |
| 5753 | if ((htx->flags & HTX_FL_EOM) && htx_is_empty(htx)) { |
| 5754 | /* EOM+empty: we may need to add END_STREAM (except for CONNECT |
| 5755 | * request) |
| 5756 | */ |
| 5757 | if (!(h2s->flags & H2_SF_BODY_TUNNEL)) |
| 5758 | es_now = 1; |
| 5759 | } |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5760 | |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5761 | if (es_now) |
| 5762 | outbuf.area[4] |= H2_F_HEADERS_END_STREAM; |
| 5763 | |
| 5764 | /* commit the H2 response */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5765 | b_add(mbuf, outbuf.data); |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5766 | h2s->flags |= H2_SF_HEADERS_SENT; |
| 5767 | h2s->st = H2_SS_OPEN; |
| 5768 | |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5769 | if (es_now) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5770 | TRACE_PROTO("setting ES on HEADERS frame", H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s, htx); |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5771 | // trim any possibly pending data (eg: inconsistent content-length) |
| 5772 | h2s->flags |= H2_SF_ES_SENT; |
| 5773 | h2s->st = H2_SS_HLOC; |
| 5774 | } |
| 5775 | |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5776 | end: |
| 5777 | return ret; |
| 5778 | full: |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5779 | if ((mbuf = br_tail_add(h2c->mbuf)) != NULL) |
| 5780 | goto retry; |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5781 | h2c->flags |= H2_CF_MUX_MFULL; |
| 5782 | h2s->flags |= H2_SF_BLK_MROOM; |
| 5783 | ret = 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5784 | TRACE_STATE("mux buffer full", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 5785 | goto end; |
| 5786 | fail: |
| 5787 | /* unparsable HTX messages, too large ones to be produced in the local |
| 5788 | * list etc go here (unrecoverable errors). |
| 5789 | */ |
| 5790 | h2s_error(h2s, H2_ERR_INTERNAL_ERROR); |
| 5791 | ret = 0; |
| 5792 | goto end; |
| 5793 | } |
| 5794 | |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5795 | /* Try to send a DATA frame matching HTTP response present in HTX structure |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5796 | * present in <buf>, for stream <h2s>. Returns the number of bytes sent. The |
| 5797 | * caller must check the stream's status to detect any error which might have |
| 5798 | * happened subsequently to a successful send. Returns the number of data bytes |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5799 | * consumed, or zero if nothing done. |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5800 | */ |
Christopher Faulet | 142854b | 2020-12-02 15:12:40 +0100 | [diff] [blame] | 5801 | static size_t h2s_make_data(struct h2s *h2s, struct buffer *buf, size_t count) |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5802 | { |
| 5803 | struct h2c *h2c = h2s->h2c; |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5804 | struct htx *htx; |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5805 | struct buffer outbuf; |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5806 | struct buffer *mbuf; |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5807 | size_t total = 0; |
| 5808 | int es_now = 0; |
| 5809 | int bsize; /* htx block size */ |
| 5810 | int fsize; /* h2 frame size */ |
| 5811 | struct htx_blk *blk; |
| 5812 | enum htx_blk_type type; |
Willy Tarreau | c7ce4e3 | 2020-01-14 11:42:59 +0100 | [diff] [blame] | 5813 | int trunc_out; /* non-zero if truncated on out buf */ |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5814 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5815 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
| 5816 | |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5817 | if (h2c_mux_busy(h2c, h2s)) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5818 | TRACE_STATE("mux output busy", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5819 | h2s->flags |= H2_SF_BLK_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5820 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5821 | goto end; |
| 5822 | } |
| 5823 | |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5824 | htx = htx_from_buf(buf); |
| 5825 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5826 | /* We only come here with HTX_BLK_DATA blocks */ |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5827 | |
| 5828 | new_frame: |
Willy Tarreau | ee57376 | 2018-12-04 15:25:57 +0100 | [diff] [blame] | 5829 | if (!count || htx_is_empty(htx)) |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5830 | goto end; |
| 5831 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5832 | if ((h2c->flags & H2_CF_IS_BACK) && |
Christopher Faulet | f95f876 | 2021-01-22 11:59:07 +0100 | [diff] [blame] | 5833 | (h2s->flags & (H2_SF_HEADERS_RCVD|H2_SF_BODY_TUNNEL)) == H2_SF_BODY_TUNNEL) { |
| 5834 | /* The response HEADERS frame not received yet. Thus the tunnel |
| 5835 | * is not fully established yet. In this situation, we block |
| 5836 | * data sending. |
| 5837 | */ |
| 5838 | h2s->flags |= H2_SF_BLK_MBUSY; |
| 5839 | TRACE_STATE("Request DATA frame blocked waiting for tunnel establishment", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
| 5840 | goto end; |
| 5841 | } |
Christopher Faulet | 91b21dc | 2021-01-22 12:13:15 +0100 | [diff] [blame] | 5842 | else if ((h2c->flags & H2_CF_IS_BACK) && (h2s->flags & H2_SF_TUNNEL_ABRT)) { |
| 5843 | /* a tunnel attempt was aborted but the is pending raw data to xfer to the server. |
| 5844 | * Thus the stream is closed with the CANCEL error. The error will be reported to |
| 5845 | * the upper layer as aserver abort. But at this stage there is nothing more we can |
| 5846 | * do. We just wait for the end of the response to be sure to not truncate it. |
| 5847 | */ |
| 5848 | if (!(h2s->flags & H2_SF_ES_RCVD)) { |
| 5849 | TRACE_STATE("Request DATA frame blocked waiting end of aborted tunnel", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
| 5850 | h2s->flags |= H2_SF_BLK_MBUSY; |
| 5851 | } |
| 5852 | else { |
| 5853 | TRACE_ERROR("Request DATA frame for aborted tunnel", H2_EV_RX_FRAME|H2_EV_RX_DATA, h2c->conn, h2s); |
| 5854 | h2s_error(h2s, H2_ERR_CANCEL); |
| 5855 | } |
| 5856 | goto end; |
| 5857 | } |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5858 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 5859 | blk = htx_get_head_blk(htx); |
| 5860 | type = htx_get_blk_type(blk); |
| 5861 | bsize = htx_get_blksz(blk); |
| 5862 | fsize = bsize; |
| 5863 | trunc_out = 0; |
| 5864 | if (type != HTX_BLK_DATA) |
| 5865 | goto end; |
| 5866 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5867 | mbuf = br_tail(h2c->mbuf); |
| 5868 | retry: |
| 5869 | if (!h2_get_buf(h2c, mbuf)) { |
| 5870 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 5871 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5872 | TRACE_STATE("waiting for room in output buffer", H2_EV_TX_FRAME|H2_EV_TX_DATA|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5873 | goto end; |
| 5874 | } |
| 5875 | |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5876 | /* Perform some optimizations to reduce the number of buffer copies. |
| 5877 | * First, if the mux's buffer is empty and the htx area contains |
| 5878 | * exactly one data block of the same size as the requested count, and |
| 5879 | * this count fits within the frame size, the stream's window size, and |
| 5880 | * the connection's window size, then it's possible to simply swap the |
| 5881 | * caller's buffer with the mux's output buffer and adjust offsets and |
| 5882 | * length to match the entire DATA HTX block in the middle. In this |
| 5883 | * case we perform a true zero-copy operation from end-to-end. This is |
| 5884 | * the situation that happens all the time with large files. Second, if |
| 5885 | * this is not possible, but the mux's output buffer is empty, we still |
| 5886 | * have an opportunity to avoid the copy to the intermediary buffer, by |
| 5887 | * making the intermediary buffer's area point to the output buffer's |
| 5888 | * area. In this case we want to skip the HTX header to make sure that |
| 5889 | * copies remain aligned and that this operation remains possible all |
| 5890 | * the time. This goes for headers, data blocks and any data extracted |
| 5891 | * from the HTX blocks. |
| 5892 | */ |
| 5893 | if (unlikely(fsize == count && |
Christopher Faulet | 192c6a2 | 2019-06-11 16:32:24 +0200 | [diff] [blame] | 5894 | htx_nbblks(htx) == 1 && type == HTX_BLK_DATA && |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 5895 | fsize <= h2s_mws(h2s) && fsize <= h2c->mws && fsize <= h2c->mfs)) { |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5896 | void *old_area = mbuf->area; |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5897 | |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5898 | if (b_data(mbuf)) { |
Willy Tarreau | 8ab128c | 2019-03-21 17:47:28 +0100 | [diff] [blame] | 5899 | /* Too bad there are data left there. We're willing to memcpy/memmove |
| 5900 | * up to 1/4 of the buffer, which means that it's OK to copy a large |
| 5901 | * frame into a buffer containing few data if it needs to be realigned, |
| 5902 | * and that it's also OK to copy few data without realigning. Otherwise |
| 5903 | * we'll pretend the mbuf is full and wait for it to become empty. |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5904 | */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5905 | if (fsize + 9 <= b_room(mbuf) && |
| 5906 | (b_data(mbuf) <= b_size(mbuf) / 4 || |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5907 | (fsize <= b_size(mbuf) / 4 && fsize + 9 <= b_contig_space(mbuf)))) { |
| 5908 | TRACE_STATE("small data present in output buffer, appending", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5909 | goto copy; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5910 | } |
Willy Tarreau | 8ab128c | 2019-03-21 17:47:28 +0100 | [diff] [blame] | 5911 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5912 | if ((mbuf = br_tail_add(h2c->mbuf)) != NULL) |
| 5913 | goto retry; |
| 5914 | |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5915 | h2c->flags |= H2_CF_MUX_MFULL; |
| 5916 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5917 | TRACE_STATE("too large data present in output buffer, waiting for emptiness", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5918 | goto end; |
| 5919 | } |
| 5920 | |
Christopher Faulet | 925abdf | 2021-04-27 22:51:07 +0200 | [diff] [blame] | 5921 | if (htx->flags & HTX_FL_EOM) { |
| 5922 | /* EOM+empty: we may need to add END_STREAM (except for tunneled |
| 5923 | * message) |
| 5924 | */ |
| 5925 | if (!(h2s->flags & H2_SF_BODY_TUNNEL)) |
| 5926 | es_now = 1; |
| 5927 | } |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5928 | /* map an H2 frame to the HTX block so that we can put the |
| 5929 | * frame header there. |
| 5930 | */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5931 | *mbuf = b_make(buf->area, buf->size, sizeof(struct htx) + blk->addr - 9, fsize + 9); |
| 5932 | outbuf.area = b_head(mbuf); |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5933 | |
| 5934 | /* prepend an H2 DATA frame header just before the DATA block */ |
| 5935 | memcpy(outbuf.area, "\x00\x00\x00\x00\x00", 5); |
| 5936 | write_n32(outbuf.area + 5, h2s->id); // 4 bytes |
Christopher Faulet | 925abdf | 2021-04-27 22:51:07 +0200 | [diff] [blame] | 5937 | if (es_now) |
| 5938 | outbuf.area[4] |= H2_F_DATA_END_STREAM; |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5939 | h2_set_frame_size(outbuf.area, fsize); |
| 5940 | |
| 5941 | /* update windows */ |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 5942 | h2s->sws -= fsize; |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5943 | h2c->mws -= fsize; |
| 5944 | |
| 5945 | /* and exchange with our old area */ |
| 5946 | buf->area = old_area; |
| 5947 | buf->data = buf->head = 0; |
| 5948 | total += fsize; |
Christopher Faulet | 925abdf | 2021-04-27 22:51:07 +0200 | [diff] [blame] | 5949 | fsize = 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5950 | |
| 5951 | TRACE_PROTO("sent H2 DATA frame (zero-copy)", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
Christopher Faulet | 925abdf | 2021-04-27 22:51:07 +0200 | [diff] [blame] | 5952 | goto out; |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5953 | } |
Willy Tarreau | 2fb1d4c | 2018-12-04 15:28:03 +0100 | [diff] [blame] | 5954 | |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 5955 | copy: |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5956 | /* for DATA and EOM we'll have to emit a frame, even if empty */ |
| 5957 | |
| 5958 | while (1) { |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5959 | outbuf = b_make(b_tail(mbuf), b_contig_space(mbuf), 0, 0); |
| 5960 | if (outbuf.size >= 9 || !b_space_wraps(mbuf)) |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5961 | break; |
| 5962 | realign_again: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 5963 | b_slow_realign(mbuf, trash.area, b_data(mbuf)); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5964 | } |
| 5965 | |
| 5966 | if (outbuf.size < 9) { |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 5967 | if ((mbuf = br_tail_add(h2c->mbuf)) != NULL) |
| 5968 | goto retry; |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5969 | h2c->flags |= H2_CF_MUX_MFULL; |
| 5970 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5971 | TRACE_STATE("output buffer full", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5972 | goto end; |
| 5973 | } |
| 5974 | |
| 5975 | /* len: 0x000000 (fill later), type: 0(DATA), flags: none=0 */ |
| 5976 | memcpy(outbuf.area, "\x00\x00\x00\x00\x00", 5); |
| 5977 | write_n32(outbuf.area + 5, h2s->id); // 4 bytes |
| 5978 | outbuf.data = 9; |
| 5979 | |
| 5980 | /* we have in <fsize> the exact number of bytes we need to copy from |
| 5981 | * the HTX buffer. We need to check this against the connection's and |
| 5982 | * the stream's send windows, and to ensure that this fits in the max |
| 5983 | * frame size and in the buffer's available space minus 9 bytes (for |
| 5984 | * the frame header). The connection's flow control is applied last so |
| 5985 | * that we can use a separate list of streams which are immediately |
| 5986 | * unblocked on window opening. Note: we don't implement padding. |
| 5987 | */ |
| 5988 | |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5989 | if (!fsize) |
| 5990 | goto send_empty; |
| 5991 | |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 5992 | if (h2s_mws(h2s) <= 0) { |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5993 | h2s->flags |= H2_SF_BLK_SFCTL; |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 5994 | if (LIST_INLIST(&h2s->list)) |
Olivier Houchard | bfe2a83 | 2019-05-10 14:02:21 +0200 | [diff] [blame] | 5995 | LIST_DEL_INIT(&h2s->list); |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 5996 | LIST_APPEND(&h2c->blocked_list, &h2s->list); |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 5997 | TRACE_STATE("stream window <=0, flow-controlled", H2_EV_TX_FRAME|H2_EV_TX_DATA|H2_EV_H2S_FCTL, h2c->conn, h2s); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 5998 | goto end; |
| 5999 | } |
| 6000 | |
Willy Tarreau | ee57376 | 2018-12-04 15:25:57 +0100 | [diff] [blame] | 6001 | if (fsize > count) |
| 6002 | fsize = count; |
| 6003 | |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 6004 | if (fsize > h2s_mws(h2s)) |
| 6005 | fsize = h2s_mws(h2s); // >0 |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6006 | |
| 6007 | if (h2c->mfs && fsize > h2c->mfs) |
| 6008 | fsize = h2c->mfs; // >0 |
| 6009 | |
| 6010 | if (fsize + 9 > outbuf.size) { |
Willy Tarreau | 455d568 | 2019-05-24 19:42:18 +0200 | [diff] [blame] | 6011 | /* It doesn't fit at once. If it at least fits once split and |
| 6012 | * the amount of data to move is low, let's defragment the |
| 6013 | * buffer now. |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6014 | */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 6015 | if (b_space_wraps(mbuf) && |
| 6016 | (fsize + 9 <= b_room(mbuf)) && |
| 6017 | b_data(mbuf) <= MAX_DATA_REALIGN) |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6018 | goto realign_again; |
| 6019 | fsize = outbuf.size - 9; |
Willy Tarreau | c7ce4e3 | 2020-01-14 11:42:59 +0100 | [diff] [blame] | 6020 | trunc_out = 1; |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6021 | |
| 6022 | if (fsize <= 0) { |
| 6023 | /* no need to send an empty frame here */ |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 6024 | if ((mbuf = br_tail_add(h2c->mbuf)) != NULL) |
| 6025 | goto retry; |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6026 | h2c->flags |= H2_CF_MUX_MFULL; |
| 6027 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6028 | TRACE_STATE("output buffer full", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6029 | goto end; |
| 6030 | } |
| 6031 | } |
| 6032 | |
| 6033 | if (h2c->mws <= 0) { |
| 6034 | h2s->flags |= H2_SF_BLK_MFCTL; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6035 | TRACE_STATE("connection window <=0, stream flow-controlled", H2_EV_TX_FRAME|H2_EV_TX_DATA|H2_EV_H2C_FCTL, h2c->conn, h2s); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6036 | goto end; |
| 6037 | } |
| 6038 | |
| 6039 | if (fsize > h2c->mws) |
| 6040 | fsize = h2c->mws; |
| 6041 | |
| 6042 | /* now let's copy this this into the output buffer */ |
| 6043 | memcpy(outbuf.area + 9, htx_get_blk_ptr(htx, blk), fsize); |
Willy Tarreau | 1d4a0f8 | 2019-08-02 07:52:08 +0200 | [diff] [blame] | 6044 | h2s->sws -= fsize; |
Willy Tarreau | 0f799ca | 2018-12-04 15:20:11 +0100 | [diff] [blame] | 6045 | h2c->mws -= fsize; |
Willy Tarreau | ee57376 | 2018-12-04 15:25:57 +0100 | [diff] [blame] | 6046 | count -= fsize; |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6047 | |
| 6048 | send_empty: |
| 6049 | /* update the frame's size */ |
| 6050 | h2_set_frame_size(outbuf.area, fsize); |
| 6051 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6052 | /* consume incoming HTX block */ |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6053 | total += fsize; |
| 6054 | if (fsize == bsize) { |
| 6055 | htx_remove_blk(htx, blk); |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6056 | if ((htx->flags & HTX_FL_EOM) && htx_is_empty(htx)) { |
| 6057 | /* EOM+empty: we may need to add END_STREAM (except for tunneled |
| 6058 | * message) |
| 6059 | */ |
| 6060 | if (!(h2s->flags & H2_SF_BODY_TUNNEL)) |
| 6061 | es_now = 1; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6062 | } |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6063 | } |
| 6064 | else { |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6065 | /* we've truncated this block */ |
| 6066 | htx_cut_data_blk(htx, blk, fsize); |
| 6067 | } |
| 6068 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6069 | if (es_now) |
| 6070 | outbuf.area[4] |= H2_F_DATA_END_STREAM; |
| 6071 | |
| 6072 | /* commit the H2 response */ |
| 6073 | b_add(mbuf, fsize + 9); |
| 6074 | |
Christopher Faulet | 925abdf | 2021-04-27 22:51:07 +0200 | [diff] [blame] | 6075 | out: |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6076 | if (es_now) { |
| 6077 | if (h2s->st == H2_SS_OPEN) |
| 6078 | h2s->st = H2_SS_HLOC; |
| 6079 | else |
| 6080 | h2s_close(h2s); |
| 6081 | |
| 6082 | h2s->flags |= H2_SF_ES_SENT; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6083 | TRACE_PROTO("ES flag set on outgoing frame", H2_EV_TX_FRAME|H2_EV_TX_DATA|H2_EV_TX_EOI, h2c->conn, h2s); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6084 | } |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6085 | else if (fsize) { |
| 6086 | if (fsize == bsize) { |
| 6087 | TRACE_DEVEL("more data may be available, trying to send another frame", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
| 6088 | goto new_frame; |
| 6089 | } |
| 6090 | else if (trunc_out) { |
| 6091 | /* we've truncated this block */ |
| 6092 | goto new_frame; |
| 6093 | } |
| 6094 | } |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6095 | |
| 6096 | end: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6097 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6098 | return total; |
| 6099 | } |
| 6100 | |
Christopher Faulet | 991febd | 2020-12-02 15:17:31 +0100 | [diff] [blame] | 6101 | /* Skip the message payload (DATA blocks) and emit an empty DATA frame with the |
| 6102 | * ES flag set for stream <h2s>. This function is called for response known to |
| 6103 | * have no payload. Only DATA blocks are skipped. This means the trailers are |
Ilya Shipitsin | acf8459 | 2021-02-06 22:29:08 +0500 | [diff] [blame] | 6104 | * still emitted. The caller must check the stream's status to detect any error |
Christopher Faulet | 991febd | 2020-12-02 15:17:31 +0100 | [diff] [blame] | 6105 | * which might have happened subsequently to a successful send. Returns the |
| 6106 | * number of data bytes consumed, or zero if nothing done. |
| 6107 | */ |
| 6108 | static size_t h2s_skip_data(struct h2s *h2s, struct buffer *buf, size_t count) |
| 6109 | { |
| 6110 | struct h2c *h2c = h2s->h2c; |
| 6111 | struct htx *htx; |
| 6112 | int bsize; /* htx block size */ |
| 6113 | int fsize; /* h2 frame size */ |
| 6114 | struct htx_blk *blk; |
| 6115 | enum htx_blk_type type; |
| 6116 | size_t total = 0; |
| 6117 | |
| 6118 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
| 6119 | |
| 6120 | if (h2c_mux_busy(h2c, h2s)) { |
| 6121 | TRACE_STATE("mux output busy", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
| 6122 | h2s->flags |= H2_SF_BLK_MBUSY; |
| 6123 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
| 6124 | goto end; |
| 6125 | } |
| 6126 | |
| 6127 | htx = htx_from_buf(buf); |
| 6128 | |
| 6129 | next_data: |
| 6130 | if (!count || htx_is_empty(htx)) |
| 6131 | goto end; |
| 6132 | blk = htx_get_head_blk(htx); |
| 6133 | type = htx_get_blk_type(blk); |
| 6134 | bsize = htx_get_blksz(blk); |
| 6135 | fsize = bsize; |
| 6136 | if (type != HTX_BLK_DATA) |
| 6137 | goto end; |
| 6138 | |
| 6139 | if (fsize > count) |
| 6140 | fsize = count; |
| 6141 | |
| 6142 | if (fsize != bsize) |
| 6143 | goto skip_data; |
| 6144 | |
| 6145 | if (!(htx->flags & HTX_FL_EOM) || !htx_is_unique_blk(htx, blk)) |
| 6146 | goto skip_data; |
| 6147 | |
| 6148 | /* Here, it is the last block and it is also the end of the message. So |
| 6149 | * we can emit an empty DATA frame with the ES flag set |
| 6150 | */ |
| 6151 | if (h2_send_empty_data_es(h2s) <= 0) |
| 6152 | goto end; |
| 6153 | |
| 6154 | if (h2s->st == H2_SS_OPEN) |
| 6155 | h2s->st = H2_SS_HLOC; |
| 6156 | else |
| 6157 | h2s_close(h2s); |
| 6158 | |
| 6159 | skip_data: |
| 6160 | /* consume incoming HTX block */ |
| 6161 | total += fsize; |
| 6162 | if (fsize == bsize) { |
| 6163 | TRACE_DEVEL("more data may be available, trying to skip another frame", H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
| 6164 | htx_remove_blk(htx, blk); |
| 6165 | goto next_data; |
| 6166 | } |
| 6167 | else { |
| 6168 | /* we've truncated this block */ |
| 6169 | htx_cut_data_blk(htx, blk, fsize); |
| 6170 | } |
| 6171 | |
| 6172 | end: |
| 6173 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_DATA, h2c->conn, h2s); |
| 6174 | return total; |
| 6175 | } |
| 6176 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6177 | /* Try to send a HEADERS frame matching HTX_BLK_TLR series of blocks present in |
| 6178 | * HTX message <htx> for the H2 stream <h2s>. Returns the number of bytes |
| 6179 | * processed. The caller must check the stream's status to detect any error |
| 6180 | * which might have happened subsequently to a successful send. The htx blocks |
| 6181 | * are automatically removed from the message. The htx message is assumed to be |
| 6182 | * valid since produced from the internal code. Processing stops when meeting |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6183 | * the EOT, which *is* removed. All trailers are processed at once and sent as a |
| 6184 | * single frame. The ES flag is always set. |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6185 | */ |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6186 | static size_t h2s_make_trailers(struct h2s *h2s, struct htx *htx) |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6187 | { |
Christopher Faulet | e4ab11b | 2019-06-11 15:05:37 +0200 | [diff] [blame] | 6188 | struct http_hdr list[global.tune.max_http_hdr]; |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6189 | struct h2c *h2c = h2s->h2c; |
| 6190 | struct htx_blk *blk; |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6191 | struct buffer outbuf; |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 6192 | struct buffer *mbuf; |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6193 | enum htx_blk_type type; |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6194 | int ret = 0; |
| 6195 | int hdr; |
| 6196 | int idx; |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6197 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6198 | TRACE_ENTER(H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
| 6199 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6200 | if (h2c_mux_busy(h2c, h2s)) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6201 | TRACE_STATE("mux output busy", H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6202 | h2s->flags |= H2_SF_BLK_MBUSY; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6203 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6204 | goto end; |
| 6205 | } |
| 6206 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6207 | /* get trailers. */ |
Christopher Faulet | 2d7c539 | 2019-06-03 10:41:26 +0200 | [diff] [blame] | 6208 | hdr = 0; |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6209 | for (blk = htx_get_head_blk(htx); blk; blk = htx_get_next_blk(htx, blk)) { |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6210 | type = htx_get_blk_type(blk); |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6211 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6212 | if (type == HTX_BLK_UNUSED) |
| 6213 | continue; |
| 6214 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6215 | if (type == HTX_BLK_EOT) |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6216 | break; |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6217 | if (type == HTX_BLK_TLR) { |
| 6218 | if (unlikely(hdr >= sizeof(list)/sizeof(list[0]) - 1)) { |
| 6219 | TRACE_ERROR("too many headers", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_ERR, h2c->conn, h2s); |
| 6220 | goto fail; |
| 6221 | } |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6222 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6223 | list[hdr].n = htx_get_blk_name(htx, blk); |
| 6224 | list[hdr].v = htx_get_blk_value(htx, blk); |
| 6225 | hdr++; |
| 6226 | } |
| 6227 | else { |
| 6228 | TRACE_ERROR("will not encode unexpected htx block", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_ERR, h2c->conn, h2s); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6229 | goto fail; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6230 | } |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6231 | } |
| 6232 | |
Christopher Faulet | 2d7c539 | 2019-06-03 10:41:26 +0200 | [diff] [blame] | 6233 | /* marker for end of trailers */ |
| 6234 | list[hdr].n = ist(""); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6235 | |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 6236 | mbuf = br_tail(h2c->mbuf); |
| 6237 | retry: |
| 6238 | if (!h2_get_buf(h2c, mbuf)) { |
| 6239 | h2c->flags |= H2_CF_MUX_MALLOC; |
| 6240 | h2s->flags |= H2_SF_BLK_MROOM; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6241 | TRACE_STATE("waiting for room in output buffer", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 6242 | goto end; |
| 6243 | } |
| 6244 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6245 | chunk_reset(&outbuf); |
| 6246 | |
| 6247 | while (1) { |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 6248 | outbuf = b_make(b_tail(mbuf), b_contig_space(mbuf), 0, 0); |
| 6249 | if (outbuf.size >= 9 || !b_space_wraps(mbuf)) |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6250 | break; |
| 6251 | realign_again: |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 6252 | b_slow_realign(mbuf, trash.area, b_data(mbuf)); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6253 | } |
| 6254 | |
| 6255 | if (outbuf.size < 9) |
| 6256 | goto full; |
| 6257 | |
| 6258 | /* len: 0x000000 (fill later), type: 1(HEADERS), flags: ENDH=4,ES=1 */ |
| 6259 | memcpy(outbuf.area, "\x00\x00\x00\x01\x05", 5); |
| 6260 | write_n32(outbuf.area + 5, h2s->id); // 4 bytes |
| 6261 | outbuf.data = 9; |
| 6262 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6263 | /* encode all headers */ |
| 6264 | for (idx = 0; idx < hdr; idx++) { |
| 6265 | /* these ones do not exist in H2 or must not appear in |
| 6266 | * trailers and must be dropped. |
| 6267 | */ |
| 6268 | if (isteq(list[idx].n, ist("host")) || |
| 6269 | isteq(list[idx].n, ist("content-length")) || |
| 6270 | isteq(list[idx].n, ist("connection")) || |
| 6271 | isteq(list[idx].n, ist("proxy-connection")) || |
| 6272 | isteq(list[idx].n, ist("keep-alive")) || |
| 6273 | isteq(list[idx].n, ist("upgrade")) || |
| 6274 | isteq(list[idx].n, ist("te")) || |
| 6275 | isteq(list[idx].n, ist("transfer-encoding"))) |
| 6276 | continue; |
| 6277 | |
Christopher Faulet | 86d144c | 2019-08-14 16:32:25 +0200 | [diff] [blame] | 6278 | /* Skip all pseudo-headers */ |
| 6279 | if (*(list[idx].n.ptr) == ':') |
| 6280 | continue; |
| 6281 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6282 | if (!hpack_encode_header(&outbuf, list[idx].n, list[idx].v)) { |
| 6283 | /* output full */ |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 6284 | if (b_space_wraps(mbuf)) |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6285 | goto realign_again; |
| 6286 | goto full; |
| 6287 | } |
| 6288 | } |
| 6289 | |
Willy Tarreau | 5121e5d | 2019-05-06 15:13:41 +0200 | [diff] [blame] | 6290 | if (outbuf.data == 9) { |
| 6291 | /* here we have a problem, we have nothing to emit (either we |
| 6292 | * received an empty trailers block followed or we removed its |
| 6293 | * contents above). Because of this we can't send a HEADERS |
| 6294 | * frame, so we have to cheat and instead send an empty DATA |
| 6295 | * frame conveying the ES flag. |
Willy Tarreau | 67b8cae | 2019-02-21 18:16:35 +0100 | [diff] [blame] | 6296 | */ |
| 6297 | outbuf.area[3] = H2_FT_DATA; |
| 6298 | outbuf.area[4] = H2_F_DATA_END_STREAM; |
| 6299 | } |
| 6300 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6301 | /* update the frame's size */ |
| 6302 | h2_set_frame_size(outbuf.area, outbuf.data - 9); |
| 6303 | |
Willy Tarreau | 572d9f5 | 2019-10-11 16:58:37 +0200 | [diff] [blame] | 6304 | if (outbuf.data > h2c->mfs + 9) { |
| 6305 | if (!h2_fragment_headers(&outbuf, h2c->mfs)) { |
| 6306 | /* output full */ |
| 6307 | if (b_space_wraps(mbuf)) |
| 6308 | goto realign_again; |
| 6309 | goto full; |
| 6310 | } |
| 6311 | } |
| 6312 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6313 | /* commit the H2 response */ |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6314 | TRACE_PROTO("sent H2 trailers HEADERS frame", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_TX_EOI, h2c->conn, h2s); |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 6315 | b_add(mbuf, outbuf.data); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6316 | h2s->flags |= H2_SF_ES_SENT; |
| 6317 | |
| 6318 | if (h2s->st == H2_SS_OPEN) |
| 6319 | h2s->st = H2_SS_HLOC; |
| 6320 | else |
| 6321 | h2s_close(h2s); |
| 6322 | |
| 6323 | /* OK we could properly deliver the response */ |
| 6324 | done: |
Willy Tarreau | fb07b3f | 2019-05-06 11:23:29 +0200 | [diff] [blame] | 6325 | /* remove all header blocks till the end and compute the corresponding size. */ |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6326 | ret = 0; |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6327 | blk = htx_get_head_blk(htx); |
| 6328 | while (blk) { |
| 6329 | type = htx_get_blk_type(blk); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6330 | ret += htx_get_blksz(blk); |
| 6331 | blk = htx_remove_blk(htx, blk); |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6332 | /* The removed block is the EOT */ |
| 6333 | if (type == HTX_BLK_EOT) |
| 6334 | break; |
Christopher Faulet | 2d7c539 | 2019-06-03 10:41:26 +0200 | [diff] [blame] | 6335 | } |
| 6336 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6337 | end: |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6338 | TRACE_LEAVE(H2_EV_TX_FRAME|H2_EV_TX_HDR, h2c->conn, h2s); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6339 | return ret; |
| 6340 | full: |
Willy Tarreau | 9c218e7 | 2019-05-26 10:08:28 +0200 | [diff] [blame] | 6341 | if ((mbuf = br_tail_add(h2c->mbuf)) != NULL) |
| 6342 | goto retry; |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6343 | h2c->flags |= H2_CF_MUX_MFULL; |
| 6344 | h2s->flags |= H2_SF_BLK_MROOM; |
| 6345 | ret = 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6346 | TRACE_STATE("mux buffer full", H2_EV_TX_FRAME|H2_EV_TX_HDR|H2_EV_H2S_BLK, h2c->conn, h2s); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6347 | goto end; |
| 6348 | fail: |
| 6349 | /* unparsable HTX messages, too large ones to be produced in the local |
| 6350 | * list etc go here (unrecoverable errors). |
| 6351 | */ |
| 6352 | h2s_error(h2s, H2_ERR_INTERNAL_ERROR); |
| 6353 | ret = 0; |
| 6354 | goto end; |
| 6355 | } |
| 6356 | |
Willy Tarreau | ee1a6fc | 2020-01-17 07:52:13 +0100 | [diff] [blame] | 6357 | /* Called from the upper layer, to subscribe <es> to events <event_type>. The |
| 6358 | * event subscriber <es> is not allowed to change from a previous call as long |
| 6359 | * as at least one event is still subscribed. The <event_type> must only be a |
| 6360 | * combination of SUB_RETRY_RECV and SUB_RETRY_SEND. It always returns 0. |
Willy Tarreau | 749f5ca | 2019-03-21 19:19:36 +0100 | [diff] [blame] | 6361 | */ |
Willy Tarreau | ee1a6fc | 2020-01-17 07:52:13 +0100 | [diff] [blame] | 6362 | static int h2_subscribe(struct conn_stream *cs, int event_type, struct wait_event *es) |
Olivier Houchard | 6ff2039 | 2018-07-17 18:46:31 +0200 | [diff] [blame] | 6363 | { |
Christopher Faulet | db90f2a | 2022-03-22 16:06:25 +0100 | [diff] [blame] | 6364 | struct h2s *h2s = __cs_mux(cs); |
Olivier Houchard | 4cf7fb1 | 2018-08-02 19:23:05 +0200 | [diff] [blame] | 6365 | struct h2c *h2c = h2s->h2c; |
Olivier Houchard | 6ff2039 | 2018-07-17 18:46:31 +0200 | [diff] [blame] | 6366 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6367 | TRACE_ENTER(H2_EV_STRM_SEND|H2_EV_STRM_RECV, h2c->conn, h2s); |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 6368 | |
| 6369 | BUG_ON(event_type & ~(SUB_RETRY_SEND|SUB_RETRY_RECV)); |
Willy Tarreau | ee1a6fc | 2020-01-17 07:52:13 +0100 | [diff] [blame] | 6370 | BUG_ON(h2s->subs && h2s->subs != es); |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 6371 | |
Willy Tarreau | ee1a6fc | 2020-01-17 07:52:13 +0100 | [diff] [blame] | 6372 | es->events |= event_type; |
| 6373 | h2s->subs = es; |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 6374 | |
| 6375 | if (event_type & SUB_RETRY_RECV) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6376 | TRACE_DEVEL("subscribe(recv)", H2_EV_STRM_RECV, h2c->conn, h2s); |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 6377 | |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 6378 | if (event_type & SUB_RETRY_SEND) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6379 | TRACE_DEVEL("subscribe(send)", H2_EV_STRM_SEND, h2c->conn, h2s); |
Olivier Houchard | f833815 | 2019-05-14 17:50:32 +0200 | [diff] [blame] | 6380 | if (!(h2s->flags & H2_SF_BLK_SFCTL) && |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 6381 | !LIST_INLIST(&h2s->list)) { |
Olivier Houchard | f833815 | 2019-05-14 17:50:32 +0200 | [diff] [blame] | 6382 | if (h2s->flags & H2_SF_BLK_MFCTL) |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 6383 | LIST_APPEND(&h2c->fctl_list, &h2s->list); |
Olivier Houchard | f833815 | 2019-05-14 17:50:32 +0200 | [diff] [blame] | 6384 | else |
Willy Tarreau | 2b71810 | 2021-04-21 07:32:39 +0200 | [diff] [blame] | 6385 | LIST_APPEND(&h2c->send_list, &h2s->list); |
Olivier Houchard | e1c6dbc | 2018-08-01 17:06:43 +0200 | [diff] [blame] | 6386 | } |
Olivier Houchard | 6ff2039 | 2018-07-17 18:46:31 +0200 | [diff] [blame] | 6387 | } |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6388 | TRACE_LEAVE(H2_EV_STRM_SEND|H2_EV_STRM_RECV, h2c->conn, h2s); |
Olivier Houchard | 83a0cd8 | 2018-09-28 17:57:58 +0200 | [diff] [blame] | 6389 | return 0; |
Olivier Houchard | 6ff2039 | 2018-07-17 18:46:31 +0200 | [diff] [blame] | 6390 | } |
| 6391 | |
Willy Tarreau | ee1a6fc | 2020-01-17 07:52:13 +0100 | [diff] [blame] | 6392 | /* Called from the upper layer, to unsubscribe <es> from events <event_type>. |
| 6393 | * The <es> pointer is not allowed to differ from the one passed to the |
| 6394 | * subscribe() call. It always returns zero. |
Willy Tarreau | 749f5ca | 2019-03-21 19:19:36 +0100 | [diff] [blame] | 6395 | */ |
Willy Tarreau | ee1a6fc | 2020-01-17 07:52:13 +0100 | [diff] [blame] | 6396 | static int h2_unsubscribe(struct conn_stream *cs, int event_type, struct wait_event *es) |
Olivier Houchard | 83a0cd8 | 2018-09-28 17:57:58 +0200 | [diff] [blame] | 6397 | { |
Christopher Faulet | db90f2a | 2022-03-22 16:06:25 +0100 | [diff] [blame] | 6398 | struct h2s *h2s = __cs_mux(cs); |
Olivier Houchard | 83a0cd8 | 2018-09-28 17:57:58 +0200 | [diff] [blame] | 6399 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6400 | TRACE_ENTER(H2_EV_STRM_SEND|H2_EV_STRM_RECV, h2s->h2c->conn, h2s); |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 6401 | |
| 6402 | BUG_ON(event_type & ~(SUB_RETRY_SEND|SUB_RETRY_RECV)); |
Willy Tarreau | ee1a6fc | 2020-01-17 07:52:13 +0100 | [diff] [blame] | 6403 | BUG_ON(h2s->subs && h2s->subs != es); |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 6404 | |
Willy Tarreau | ee1a6fc | 2020-01-17 07:52:13 +0100 | [diff] [blame] | 6405 | es->events &= ~event_type; |
| 6406 | if (!es->events) |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 6407 | h2s->subs = NULL; |
| 6408 | |
| 6409 | if (event_type & SUB_RETRY_RECV) |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6410 | TRACE_DEVEL("unsubscribe(recv)", H2_EV_STRM_RECV, h2s->h2c->conn, h2s); |
Willy Tarreau | d946416 | 2020-01-10 18:25:07 +0100 | [diff] [blame] | 6411 | |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 6412 | if (event_type & SUB_RETRY_SEND) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6413 | TRACE_DEVEL("subscribe(send)", H2_EV_STRM_SEND, h2s->h2c->conn, h2s); |
Willy Tarreau | d946416 | 2020-01-10 18:25:07 +0100 | [diff] [blame] | 6414 | h2s->flags &= ~H2_SF_NOTIFIED; |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 6415 | if (!(h2s->flags & (H2_SF_WANT_SHUTR | H2_SF_WANT_SHUTW))) |
| 6416 | LIST_DEL_INIT(&h2s->list); |
Olivier Houchard | d846c26 | 2018-10-19 17:24:29 +0200 | [diff] [blame] | 6417 | } |
Willy Tarreau | f96508a | 2020-01-10 11:12:48 +0100 | [diff] [blame] | 6418 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6419 | TRACE_LEAVE(H2_EV_STRM_SEND|H2_EV_STRM_RECV, h2s->h2c->conn, h2s); |
Olivier Houchard | 83a0cd8 | 2018-09-28 17:57:58 +0200 | [diff] [blame] | 6420 | return 0; |
| 6421 | } |
| 6422 | |
| 6423 | |
Christopher Faulet | 564e39c | 2021-09-21 15:50:55 +0200 | [diff] [blame] | 6424 | /* Called from the upper layer, to receive data |
| 6425 | * |
| 6426 | * The caller is responsible for defragmenting <buf> if necessary. But <flags> |
| 6427 | * must be tested to know the calling context. If CO_RFL_BUF_FLUSH is set, it |
| 6428 | * means the caller wants to flush input data (from the mux buffer and the |
| 6429 | * channel buffer) to be able to use kernel splicing or any kind of mux-to-mux |
| 6430 | * xfer. If CO_RFL_KEEP_RECV is set, the mux must always subscribe for read |
| 6431 | * events before giving back. CO_RFL_BUF_WET is set if <buf> is congested with |
| 6432 | * data scheduled for leaving soon. CO_RFL_BUF_NOT_STUCK is set to instruct the |
| 6433 | * mux it may optimize the data copy to <buf> if necessary. Otherwise, it should |
| 6434 | * copy as much data as possible. |
| 6435 | */ |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 6436 | static size_t h2_rcv_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags) |
| 6437 | { |
Christopher Faulet | db90f2a | 2022-03-22 16:06:25 +0100 | [diff] [blame] | 6438 | struct h2s *h2s = __cs_mux(cs); |
Willy Tarreau | 082f559 | 2018-11-25 08:03:32 +0100 | [diff] [blame] | 6439 | struct h2c *h2c = h2s->h2c; |
Willy Tarreau | 86724e2 | 2018-12-01 23:19:43 +0100 | [diff] [blame] | 6440 | struct htx *h2s_htx = NULL; |
| 6441 | struct htx *buf_htx = NULL; |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 6442 | size_t ret = 0; |
| 6443 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6444 | TRACE_ENTER(H2_EV_STRM_RECV, h2c->conn, h2s); |
| 6445 | |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 6446 | /* transfer possibly pending data to the upper layer */ |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6447 | h2s_htx = htx_from_buf(&h2s->rxbuf); |
Christopher Faulet | ec361bb | 2022-02-21 15:12:54 +0100 | [diff] [blame] | 6448 | if (htx_is_empty(h2s_htx) && !(h2s_htx->flags & HTX_FL_PARSING_ERROR)) { |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6449 | /* Here htx_to_buf() will set buffer data to 0 because |
| 6450 | * the HTX is empty. |
| 6451 | */ |
| 6452 | htx_to_buf(h2s_htx, &h2s->rxbuf); |
| 6453 | goto end; |
| 6454 | } |
Willy Tarreau | 7196dd6 | 2019-03-05 10:51:11 +0100 | [diff] [blame] | 6455 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6456 | ret = h2s_htx->data; |
| 6457 | buf_htx = htx_from_buf(buf); |
Willy Tarreau | 7196dd6 | 2019-03-05 10:51:11 +0100 | [diff] [blame] | 6458 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6459 | /* <buf> is empty and the message is small enough, swap the |
| 6460 | * buffers. */ |
| 6461 | if (htx_is_empty(buf_htx) && htx_used_space(h2s_htx) <= count) { |
Christopher Faulet | 27ba2dc | 2018-12-05 11:53:24 +0100 | [diff] [blame] | 6462 | htx_to_buf(buf_htx, buf); |
| 6463 | htx_to_buf(h2s_htx, &h2s->rxbuf); |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6464 | b_xfer(buf, &h2s->rxbuf, b_data(&h2s->rxbuf)); |
| 6465 | goto end; |
Willy Tarreau | 86724e2 | 2018-12-01 23:19:43 +0100 | [diff] [blame] | 6466 | } |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6467 | |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6468 | htx_xfer_blks(buf_htx, h2s_htx, count, HTX_BLK_UNUSED); |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6469 | |
| 6470 | if (h2s_htx->flags & HTX_FL_PARSING_ERROR) { |
| 6471 | buf_htx->flags |= HTX_FL_PARSING_ERROR; |
| 6472 | if (htx_is_empty(buf_htx)) |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6473 | cs->endp->flags |= CS_EP_EOI; |
Willy Tarreau | 86724e2 | 2018-12-01 23:19:43 +0100 | [diff] [blame] | 6474 | } |
Christopher Faulet | 810df06 | 2020-07-22 16:20:34 +0200 | [diff] [blame] | 6475 | else if (htx_is_empty(h2s_htx)) |
Christopher Faulet | 42432f3 | 2020-11-20 17:43:16 +0100 | [diff] [blame] | 6476 | buf_htx->flags |= (h2s_htx->flags & HTX_FL_EOM); |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 6477 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6478 | buf_htx->extra = (h2s_htx->extra ? (h2s_htx->data + h2s_htx->extra) : 0); |
| 6479 | htx_to_buf(buf_htx, buf); |
| 6480 | htx_to_buf(h2s_htx, &h2s->rxbuf); |
| 6481 | ret -= h2s_htx->data; |
| 6482 | |
Christopher Faulet | 37070b2 | 2019-02-14 15:12:14 +0100 | [diff] [blame] | 6483 | end: |
Olivier Houchard | 638b799 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 6484 | if (b_data(&h2s->rxbuf)) |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6485 | cs->endp->flags |= (CS_EP_RCV_MORE | CS_EP_WANT_ROOM); |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 6486 | else { |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6487 | cs->endp->flags &= ~(CS_EP_RCV_MORE | CS_EP_WANT_ROOM); |
Christopher Faulet | d0db423 | 2021-01-22 11:46:30 +0100 | [diff] [blame] | 6488 | if (h2s->flags & H2_SF_ES_RCVD) { |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6489 | cs->endp->flags |= CS_EP_EOI; |
Christopher Faulet | d0db423 | 2021-01-22 11:46:30 +0100 | [diff] [blame] | 6490 | /* Add EOS flag for tunnel */ |
| 6491 | if (h2s->flags & H2_SF_BODY_TUNNEL) |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6492 | cs->endp->flags |= CS_EP_EOS; |
Christopher Faulet | d0db423 | 2021-01-22 11:46:30 +0100 | [diff] [blame] | 6493 | } |
Christopher Faulet | aade4ed | 2020-10-08 15:38:41 +0200 | [diff] [blame] | 6494 | if (h2c_read0_pending(h2c) || h2s->st == H2_SS_CLOSED) |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6495 | cs->endp->flags |= CS_EP_EOS; |
| 6496 | if (cs->endp->flags & CS_EP_ERR_PENDING) |
| 6497 | cs->endp->flags |= CS_EP_ERROR; |
Olivier Houchard | 638b799 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 6498 | if (b_size(&h2s->rxbuf)) { |
| 6499 | b_free(&h2s->rxbuf); |
Willy Tarreau | 4d77bbf | 2021-02-20 12:02:46 +0100 | [diff] [blame] | 6500 | offer_buffers(NULL, 1); |
Olivier Houchard | 638b799 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 6501 | } |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 6502 | } |
| 6503 | |
Willy Tarreau | 082f559 | 2018-11-25 08:03:32 +0100 | [diff] [blame] | 6504 | if (ret && h2c->dsi == h2s->id) { |
| 6505 | /* demux is blocking on this stream's buffer */ |
| 6506 | h2c->flags &= ~H2_CF_DEM_SFULL; |
Olivier Houchard | 3ca18bf | 2019-04-05 15:34:34 +0200 | [diff] [blame] | 6507 | h2c_restart_reading(h2c, 1); |
Willy Tarreau | 082f559 | 2018-11-25 08:03:32 +0100 | [diff] [blame] | 6508 | } |
Christopher Faulet | 37070b2 | 2019-02-14 15:12:14 +0100 | [diff] [blame] | 6509 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6510 | TRACE_LEAVE(H2_EV_STRM_RECV, h2c->conn, h2s); |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 6511 | return ret; |
| 6512 | } |
| 6513 | |
Olivier Houchard | d846c26 | 2018-10-19 17:24:29 +0200 | [diff] [blame] | 6514 | |
Willy Tarreau | 749f5ca | 2019-03-21 19:19:36 +0100 | [diff] [blame] | 6515 | /* Called from the upper layer, to send data from buffer <buf> for no more than |
| 6516 | * <count> bytes. Returns the number of bytes effectively sent. Some status |
| 6517 | * flags may be updated on the conn_stream. |
| 6518 | */ |
Christopher Faulet | d44a9b3 | 2018-07-27 11:59:41 +0200 | [diff] [blame] | 6519 | static size_t h2_snd_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags) |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6520 | { |
Christopher Faulet | db90f2a | 2022-03-22 16:06:25 +0100 | [diff] [blame] | 6521 | struct h2s *h2s = __cs_mux(cs); |
Willy Tarreau | 1dc41e7 | 2018-06-14 13:21:28 +0200 | [diff] [blame] | 6522 | size_t total = 0; |
Willy Tarreau | 5dd1735 | 2018-06-14 13:33:30 +0200 | [diff] [blame] | 6523 | size_t ret; |
Willy Tarreau | bcd3bb3 | 2018-12-01 18:59:00 +0100 | [diff] [blame] | 6524 | struct htx *htx; |
| 6525 | struct htx_blk *blk; |
| 6526 | enum htx_blk_type btype; |
| 6527 | uint32_t bsize; |
| 6528 | int32_t idx; |
Willy Tarreau | 9e5ae1d | 2017-10-17 19:58:20 +0200 | [diff] [blame] | 6529 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6530 | TRACE_ENTER(H2_EV_H2S_SEND|H2_EV_STRM_SEND, h2s->h2c->conn, h2s); |
| 6531 | |
Olivier Houchard | d360ac6 | 2019-03-22 17:37:16 +0100 | [diff] [blame] | 6532 | /* If we were not just woken because we wanted to send but couldn't, |
| 6533 | * and there's somebody else that is waiting to send, do nothing, |
| 6534 | * we will subscribe later and be put at the end of the list |
| 6535 | */ |
Willy Tarreau | d946416 | 2020-01-10 18:25:07 +0100 | [diff] [blame] | 6536 | if (!(h2s->flags & H2_SF_NOTIFIED) && |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6537 | (!LIST_ISEMPTY(&h2s->h2c->send_list) || !LIST_ISEMPTY(&h2s->h2c->fctl_list))) { |
| 6538 | TRACE_DEVEL("other streams already waiting, going to the queue and leaving", H2_EV_H2S_SEND|H2_EV_H2S_BLK, h2s->h2c->conn, h2s); |
Olivier Houchard | d360ac6 | 2019-03-22 17:37:16 +0100 | [diff] [blame] | 6539 | return 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6540 | } |
Willy Tarreau | d946416 | 2020-01-10 18:25:07 +0100 | [diff] [blame] | 6541 | h2s->flags &= ~H2_SF_NOTIFIED; |
Olivier Houchard | 998410a | 2019-04-15 19:23:37 +0200 | [diff] [blame] | 6542 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6543 | if (h2s->h2c->st0 < H2_CS_FRAME_H) { |
| 6544 | TRACE_DEVEL("connection not ready, leaving", H2_EV_H2S_SEND|H2_EV_H2S_BLK, h2s->h2c->conn, h2s); |
Willy Tarreau | 6bf641a | 2018-10-08 09:43:03 +0200 | [diff] [blame] | 6545 | return 0; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6546 | } |
Willy Tarreau | 6bf641a | 2018-10-08 09:43:03 +0200 | [diff] [blame] | 6547 | |
Willy Tarreau | cab2295 | 2019-10-31 15:48:18 +0100 | [diff] [blame] | 6548 | if (h2s->h2c->st0 >= H2_CS_ERROR) { |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6549 | cs->endp->flags |= CS_EP_ERROR; |
Willy Tarreau | cab2295 | 2019-10-31 15:48:18 +0100 | [diff] [blame] | 6550 | TRACE_DEVEL("connection is in error, leaving in error", H2_EV_H2S_SEND|H2_EV_H2S_BLK|H2_EV_H2S_ERR|H2_EV_STRM_ERR, h2s->h2c->conn, h2s); |
| 6551 | return 0; |
| 6552 | } |
| 6553 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6554 | htx = htx_from_buf(buf); |
Willy Tarreau | bcd3bb3 | 2018-12-01 18:59:00 +0100 | [diff] [blame] | 6555 | |
Willy Tarreau | 0bad043 | 2018-06-14 16:54:01 +0200 | [diff] [blame] | 6556 | if (!(h2s->flags & H2_SF_OUTGOING_DATA) && count) |
Willy Tarreau | c4312d3 | 2017-11-07 12:01:53 +0100 | [diff] [blame] | 6557 | h2s->flags |= H2_SF_OUTGOING_DATA; |
| 6558 | |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 6559 | if (h2s->id == 0) { |
| 6560 | int32_t id = h2c_get_next_sid(h2s->h2c); |
| 6561 | |
| 6562 | if (id < 0) { |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6563 | cs->endp->flags |= CS_EP_ERROR; |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6564 | TRACE_DEVEL("couldn't get a stream ID, leaving in error", H2_EV_H2S_SEND|H2_EV_H2S_BLK|H2_EV_H2S_ERR|H2_EV_STRM_ERR, h2s->h2c->conn, h2s); |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 6565 | return 0; |
| 6566 | } |
| 6567 | |
| 6568 | eb32_delete(&h2s->by_id); |
| 6569 | h2s->by_id.key = h2s->id = id; |
| 6570 | h2s->h2c->max_id = id; |
Willy Tarreau | d64a3eb | 2019-01-23 10:22:21 +0100 | [diff] [blame] | 6571 | h2s->h2c->nb_reserved--; |
Willy Tarreau | 751f2d0 | 2018-10-05 09:35:00 +0200 | [diff] [blame] | 6572 | eb32_insert(&h2s->h2c->streams_by_id, &h2s->by_id); |
| 6573 | } |
| 6574 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6575 | while (h2s->st < H2_SS_HLOC && !(h2s->flags & H2_SF_BLK_ANY) && |
| 6576 | count && !htx_is_empty(htx)) { |
| 6577 | idx = htx_get_head(htx); |
| 6578 | blk = htx_get_blk(htx, idx); |
| 6579 | btype = htx_get_blk_type(blk); |
| 6580 | bsize = htx_get_blksz(blk); |
Willy Tarreau | bcd3bb3 | 2018-12-01 18:59:00 +0100 | [diff] [blame] | 6581 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6582 | switch (btype) { |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 6583 | case HTX_BLK_REQ_SL: |
| 6584 | /* start-line before headers */ |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6585 | ret = h2s_bck_make_req_headers(h2s, htx); |
Willy Tarreau | 8073969 | 2018-10-05 11:35:57 +0200 | [diff] [blame] | 6586 | if (ret > 0) { |
| 6587 | total += ret; |
| 6588 | count -= ret; |
| 6589 | if (ret < bsize) |
| 6590 | goto done; |
| 6591 | } |
| 6592 | break; |
| 6593 | |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 6594 | case HTX_BLK_RES_SL: |
| 6595 | /* start-line before headers */ |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6596 | ret = h2s_frt_make_resp_headers(h2s, htx); |
Willy Tarreau | 115e83b | 2018-12-01 19:17:53 +0100 | [diff] [blame] | 6597 | if (ret > 0) { |
| 6598 | total += ret; |
| 6599 | count -= ret; |
| 6600 | if (ret < bsize) |
| 6601 | goto done; |
| 6602 | } |
| 6603 | break; |
| 6604 | |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6605 | case HTX_BLK_DATA: |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6606 | /* all these cause the emission of a DATA frame (possibly empty) */ |
Christopher Faulet | 991febd | 2020-12-02 15:17:31 +0100 | [diff] [blame] | 6607 | if (!(h2s->h2c->flags & H2_CF_IS_BACK) && |
| 6608 | (h2s->flags & (H2_SF_BODY_TUNNEL|H2_SF_BODYLESS_RESP)) == H2_SF_BODYLESS_RESP) |
| 6609 | ret = h2s_skip_data(h2s, buf, count); |
| 6610 | else |
| 6611 | ret = h2s_make_data(h2s, buf, count); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6612 | if (ret > 0) { |
Willy Tarreau | 98de12a | 2018-12-12 07:03:00 +0100 | [diff] [blame] | 6613 | htx = htx_from_buf(buf); |
Willy Tarreau | 0c535fd | 2018-12-01 19:25:56 +0100 | [diff] [blame] | 6614 | total += ret; |
| 6615 | count -= ret; |
| 6616 | if (ret < bsize) |
| 6617 | goto done; |
| 6618 | } |
| 6619 | break; |
| 6620 | |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6621 | case HTX_BLK_TLR: |
Christopher Faulet | 2d7c539 | 2019-06-03 10:41:26 +0200 | [diff] [blame] | 6622 | case HTX_BLK_EOT: |
Christopher Faulet | d1ac2b9 | 2020-12-02 19:12:22 +0100 | [diff] [blame] | 6623 | /* This is the first trailers block, all the subsequent ones */ |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6624 | ret = h2s_make_trailers(h2s, htx); |
Willy Tarreau | 1bb812f | 2019-01-04 10:56:26 +0100 | [diff] [blame] | 6625 | if (ret > 0) { |
| 6626 | total += ret; |
| 6627 | count -= ret; |
| 6628 | if (ret < bsize) |
| 6629 | goto done; |
| 6630 | } |
| 6631 | break; |
| 6632 | |
Willy Tarreau | bcd3bb3 | 2018-12-01 18:59:00 +0100 | [diff] [blame] | 6633 | default: |
| 6634 | htx_remove_blk(htx, blk); |
| 6635 | total += bsize; |
| 6636 | count -= bsize; |
| 6637 | break; |
Willy Tarreau | bcd3bb3 | 2018-12-01 18:59:00 +0100 | [diff] [blame] | 6638 | } |
Willy Tarreau | bcd3bb3 | 2018-12-01 18:59:00 +0100 | [diff] [blame] | 6639 | } |
| 6640 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6641 | done: |
Willy Tarreau | 2b77848 | 2019-05-06 15:00:22 +0200 | [diff] [blame] | 6642 | if (h2s->st >= H2_SS_HLOC) { |
Willy Tarreau | 0061096 | 2018-07-19 10:58:28 +0200 | [diff] [blame] | 6643 | /* trim any possibly pending data after we close (extra CR-LF, |
| 6644 | * unprocessed trailers, abnormal extra data, ...) |
| 6645 | */ |
Willy Tarreau | 0bad043 | 2018-06-14 16:54:01 +0200 | [diff] [blame] | 6646 | total += count; |
| 6647 | count = 0; |
Willy Tarreau | 0061096 | 2018-07-19 10:58:28 +0200 | [diff] [blame] | 6648 | } |
| 6649 | |
Willy Tarreau | c6795ca | 2017-11-07 09:43:06 +0100 | [diff] [blame] | 6650 | /* RST are sent similarly to frame acks */ |
Willy Tarreau | 0249219 | 2017-12-07 15:59:29 +0100 | [diff] [blame] | 6651 | if (h2s->st == H2_SS_ERROR || h2s->flags & H2_SF_RST_RCVD) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6652 | TRACE_DEVEL("reporting RST/error to the app-layer stream", H2_EV_H2S_SEND|H2_EV_H2S_ERR|H2_EV_STRM_ERR, h2s->h2c->conn, h2s); |
Willy Tarreau | ec988c7 | 2018-12-19 18:00:29 +0100 | [diff] [blame] | 6653 | cs_set_error(cs); |
Willy Tarreau | 8c0ea7d | 2017-11-10 10:05:24 +0100 | [diff] [blame] | 6654 | if (h2s_send_rst_stream(h2s->h2c, h2s) > 0) |
Willy Tarreau | 00dd078 | 2018-03-01 16:31:34 +0100 | [diff] [blame] | 6655 | h2s_close(h2s); |
Willy Tarreau | c6795ca | 2017-11-07 09:43:06 +0100 | [diff] [blame] | 6656 | } |
| 6657 | |
Christopher Faulet | 9b79a10 | 2019-07-15 11:22:56 +0200 | [diff] [blame] | 6658 | htx_to_buf(htx, buf); |
Olivier Houchard | d846c26 | 2018-10-19 17:24:29 +0200 | [diff] [blame] | 6659 | |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 6660 | if (total > 0) { |
Tim Duesterhus | 12a08d8 | 2020-12-21 19:40:16 +0100 | [diff] [blame] | 6661 | if (!(h2s->h2c->wait_event.events & SUB_RETRY_SEND)) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6662 | TRACE_DEVEL("data queued, waking up h2c sender", H2_EV_H2S_SEND|H2_EV_H2C_SEND, h2s->h2c->conn, h2s); |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 6663 | tasklet_wakeup(h2s->h2c->wait_event.tasklet); |
Tim Duesterhus | 12a08d8 | 2020-12-21 19:40:16 +0100 | [diff] [blame] | 6664 | } |
Olivier Houchard | d846c26 | 2018-10-19 17:24:29 +0200 | [diff] [blame] | 6665 | |
Olivier Houchard | 7505f94 | 2018-08-21 18:10:44 +0200 | [diff] [blame] | 6666 | } |
Olivier Houchard | 6dea2ee | 2018-12-19 18:16:17 +0100 | [diff] [blame] | 6667 | /* If we're waiting for flow control, and we got a shutr on the |
| 6668 | * connection, we will never be unlocked, so add an error on |
| 6669 | * the conn_stream. |
| 6670 | */ |
| 6671 | if (conn_xprt_read0_pending(h2s->h2c->conn) && |
| 6672 | !b_data(&h2s->h2c->dbuf) && |
| 6673 | (h2s->flags & (H2_SF_BLK_SFCTL | H2_SF_BLK_MFCTL))) { |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6674 | TRACE_DEVEL("fctl with shutr, reporting error to app-layer", H2_EV_H2S_SEND|H2_EV_STRM_SEND|H2_EV_STRM_ERR, h2s->h2c->conn, h2s); |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6675 | if (cs->endp->flags & CS_EP_EOS) |
| 6676 | cs->endp->flags |= CS_EP_ERROR; |
Olivier Houchard | 6dea2ee | 2018-12-19 18:16:17 +0100 | [diff] [blame] | 6677 | else |
Christopher Faulet | b041b23 | 2022-03-24 10:27:02 +0100 | [diff] [blame] | 6678 | cs->endp->flags |= CS_EP_ERR_PENDING; |
Olivier Houchard | 6dea2ee | 2018-12-19 18:16:17 +0100 | [diff] [blame] | 6679 | } |
Willy Tarreau | 9edf6db | 2019-10-02 10:49:59 +0200 | [diff] [blame] | 6680 | |
Willy Tarreau | 5723f29 | 2020-01-10 15:16:57 +0100 | [diff] [blame] | 6681 | if (total > 0 && !(h2s->flags & H2_SF_BLK_SFCTL) && |
| 6682 | !(h2s->flags & (H2_SF_WANT_SHUTR|H2_SF_WANT_SHUTW))) { |
Willy Tarreau | 9edf6db | 2019-10-02 10:49:59 +0200 | [diff] [blame] | 6683 | /* Ok we managed to send something, leave the send_list if we were still there */ |
Olivier Houchard | d360ac6 | 2019-03-22 17:37:16 +0100 | [diff] [blame] | 6684 | LIST_DEL_INIT(&h2s->list); |
| 6685 | } |
Willy Tarreau | 9edf6db | 2019-10-02 10:49:59 +0200 | [diff] [blame] | 6686 | |
Willy Tarreau | 7838a79 | 2019-08-12 18:42:03 +0200 | [diff] [blame] | 6687 | TRACE_LEAVE(H2_EV_H2S_SEND|H2_EV_STRM_SEND, h2s->h2c->conn, h2s); |
Willy Tarreau | 9e5ae1d | 2017-10-17 19:58:20 +0200 | [diff] [blame] | 6688 | return total; |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6689 | } |
| 6690 | |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6691 | /* for debugging with CLI's "show fd" command */ |
Willy Tarreau | 8050efe | 2021-01-21 08:26:06 +0100 | [diff] [blame] | 6692 | static int h2_show_fd(struct buffer *msg, struct connection *conn) |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6693 | { |
Willy Tarreau | 3d2ee55 | 2018-12-19 14:12:10 +0100 | [diff] [blame] | 6694 | struct h2c *h2c = conn->ctx; |
Willy Tarreau | 987c063 | 2018-12-18 10:32:05 +0100 | [diff] [blame] | 6695 | struct h2s *h2s = NULL; |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6696 | struct eb32_node *node; |
| 6697 | int fctl_cnt = 0; |
| 6698 | int send_cnt = 0; |
| 6699 | int tree_cnt = 0; |
| 6700 | int orph_cnt = 0; |
Willy Tarreau | 60f6268 | 2019-05-26 11:32:27 +0200 | [diff] [blame] | 6701 | struct buffer *hmbuf, *tmbuf; |
Willy Tarreau | 06bf83e | 2021-01-21 09:13:35 +0100 | [diff] [blame] | 6702 | int ret = 0; |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6703 | |
| 6704 | if (!h2c) |
Willy Tarreau | 06bf83e | 2021-01-21 09:13:35 +0100 | [diff] [blame] | 6705 | return ret; |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6706 | |
Olivier Houchard | fa8aa86 | 2018-10-10 18:25:41 +0200 | [diff] [blame] | 6707 | list_for_each_entry(h2s, &h2c->fctl_list, list) |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6708 | fctl_cnt++; |
| 6709 | |
Olivier Houchard | fa8aa86 | 2018-10-10 18:25:41 +0200 | [diff] [blame] | 6710 | list_for_each_entry(h2s, &h2c->send_list, list) |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6711 | send_cnt++; |
| 6712 | |
Willy Tarreau | 3af3771 | 2018-12-18 14:34:41 +0100 | [diff] [blame] | 6713 | h2s = NULL; |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6714 | node = eb32_first(&h2c->streams_by_id); |
| 6715 | while (node) { |
| 6716 | h2s = container_of(node, struct h2s, by_id); |
| 6717 | tree_cnt++; |
| 6718 | if (!h2s->cs) |
| 6719 | orph_cnt++; |
| 6720 | node = eb32_next(node); |
| 6721 | } |
| 6722 | |
Willy Tarreau | 60f6268 | 2019-05-26 11:32:27 +0200 | [diff] [blame] | 6723 | hmbuf = br_head(h2c->mbuf); |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 6724 | tmbuf = br_tail(h2c->mbuf); |
Willy Tarreau | ab2ec45 | 2019-08-30 07:07:08 +0200 | [diff] [blame] | 6725 | chunk_appendf(msg, " h2c.st0=%s .err=%d .maxid=%d .lastid=%d .flg=0x%04x" |
Willy Tarreau | 987c063 | 2018-12-18 10:32:05 +0100 | [diff] [blame] | 6726 | " .nbst=%u .nbcs=%u .fctl_cnt=%d .send_cnt=%d .tree_cnt=%d" |
Willy Tarreau | 60f6268 | 2019-05-26 11:32:27 +0200 | [diff] [blame] | 6727 | " .orph_cnt=%d .sub=%d .dsi=%d .dbuf=%u@%p+%u/%u .msi=%d" |
| 6728 | " .mbuf=[%u..%u|%u],h=[%u@%p+%u/%u],t=[%u@%p+%u/%u]", |
Willy Tarreau | ab2ec45 | 2019-08-30 07:07:08 +0200 | [diff] [blame] | 6729 | h2c_st_to_str(h2c->st0), h2c->errcode, h2c->max_id, h2c->last_sid, h2c->flags, |
Willy Tarreau | 616ac81 | 2018-07-24 14:12:42 +0200 | [diff] [blame] | 6730 | h2c->nb_streams, h2c->nb_cs, fctl_cnt, send_cnt, tree_cnt, orph_cnt, |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 6731 | h2c->wait_event.events, h2c->dsi, |
Willy Tarreau | 987c063 | 2018-12-18 10:32:05 +0100 | [diff] [blame] | 6732 | (unsigned int)b_data(&h2c->dbuf), b_orig(&h2c->dbuf), |
| 6733 | (unsigned int)b_head_ofs(&h2c->dbuf), (unsigned int)b_size(&h2c->dbuf), |
| 6734 | h2c->msi, |
Willy Tarreau | 60f6268 | 2019-05-26 11:32:27 +0200 | [diff] [blame] | 6735 | br_head_idx(h2c->mbuf), br_tail_idx(h2c->mbuf), br_size(h2c->mbuf), |
| 6736 | (unsigned int)b_data(hmbuf), b_orig(hmbuf), |
| 6737 | (unsigned int)b_head_ofs(hmbuf), (unsigned int)b_size(hmbuf), |
Willy Tarreau | bcc4595 | 2019-05-26 10:05:50 +0200 | [diff] [blame] | 6738 | (unsigned int)b_data(tmbuf), b_orig(tmbuf), |
| 6739 | (unsigned int)b_head_ofs(tmbuf), (unsigned int)b_size(tmbuf)); |
Willy Tarreau | 987c063 | 2018-12-18 10:32:05 +0100 | [diff] [blame] | 6740 | |
| 6741 | if (h2s) { |
Willy Tarreau | ed4464e | 2021-01-20 15:50:03 +0100 | [diff] [blame] | 6742 | chunk_appendf(msg, " last_h2s=%p .id=%d .st=%s .flg=0x%04x .rxbuf=%u@%p+%u/%u .cs=%p", |
Willy Tarreau | ab2ec45 | 2019-08-30 07:07:08 +0200 | [diff] [blame] | 6743 | h2s, h2s->id, h2s_st_to_str(h2s->st), h2s->flags, |
Willy Tarreau | 987c063 | 2018-12-18 10:32:05 +0100 | [diff] [blame] | 6744 | (unsigned int)b_data(&h2s->rxbuf), b_orig(&h2s->rxbuf), |
| 6745 | (unsigned int)b_head_ofs(&h2s->rxbuf), (unsigned int)b_size(&h2s->rxbuf), |
| 6746 | h2s->cs); |
| 6747 | if (h2s->cs) |
Christopher Faulet | f835dea | 2021-12-21 14:35:17 +0100 | [diff] [blame] | 6748 | chunk_appendf(msg, "(.flg=0x%08x .app=%p)", |
| 6749 | h2s->cs->flags, h2s->cs->app); |
Willy Tarreau | 98e40b9 | 2021-01-20 16:27:01 +0100 | [diff] [blame] | 6750 | |
Christopher Faulet | 22050e0 | 2022-04-13 12:08:09 +0200 | [diff] [blame] | 6751 | chunk_appendf(msg, "endp=%p", h2s->endp); |
| 6752 | if (h2s->endp) |
| 6753 | chunk_appendf(msg, "(.flg=0x%08x)", |
| 6754 | h2s->endp->flags); |
| 6755 | |
Willy Tarreau | 98e40b9 | 2021-01-20 16:27:01 +0100 | [diff] [blame] | 6756 | chunk_appendf(&trash, " .subs=%p", h2s->subs); |
| 6757 | if (h2s->subs) { |
Christopher Faulet | 6c93c4e | 2021-02-25 10:06:29 +0100 | [diff] [blame] | 6758 | chunk_appendf(&trash, "(ev=%d tl=%p", h2s->subs->events, h2s->subs->tasklet); |
| 6759 | chunk_appendf(&trash, " tl.calls=%d tl.ctx=%p tl.fct=", |
| 6760 | h2s->subs->tasklet->calls, |
| 6761 | h2s->subs->tasklet->context); |
| 6762 | if (h2s->subs->tasklet->calls >= 1000000) |
| 6763 | ret = 1; |
| 6764 | resolve_sym_name(&trash, NULL, h2s->subs->tasklet->process); |
| 6765 | chunk_appendf(&trash, ")"); |
Willy Tarreau | 98e40b9 | 2021-01-20 16:27:01 +0100 | [diff] [blame] | 6766 | } |
Willy Tarreau | 987c063 | 2018-12-18 10:32:05 +0100 | [diff] [blame] | 6767 | } |
Willy Tarreau | 06bf83e | 2021-01-21 09:13:35 +0100 | [diff] [blame] | 6768 | return ret; |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6769 | } |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6770 | |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 6771 | /* Migrate the the connection to the current thread. |
| 6772 | * Return 0 if successful, non-zero otherwise. |
| 6773 | * Expected to be called with the old thread lock held. |
| 6774 | */ |
Olivier Houchard | 1662cdb | 2020-07-03 14:04:37 +0200 | [diff] [blame] | 6775 | static int h2_takeover(struct connection *conn, int orig_tid) |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 6776 | { |
| 6777 | struct h2c *h2c = conn->ctx; |
Willy Tarreau | 617e80f | 2020-07-01 16:39:33 +0200 | [diff] [blame] | 6778 | struct task *task; |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 6779 | |
| 6780 | if (fd_takeover(conn->handle.fd, conn) != 0) |
| 6781 | return -1; |
Olivier Houchard | a74bb7e | 2020-07-03 14:01:21 +0200 | [diff] [blame] | 6782 | |
| 6783 | if (conn->xprt->takeover && conn->xprt->takeover(conn, conn->xprt_ctx, orig_tid) != 0) { |
| 6784 | /* We failed to takeover the xprt, even if the connection may |
| 6785 | * still be valid, flag it as error'd, as we have already |
| 6786 | * taken over the fd, and wake the tasklet, so that it will |
| 6787 | * destroy it. |
| 6788 | */ |
| 6789 | conn->flags |= CO_FL_ERROR; |
| 6790 | tasklet_wakeup_on(h2c->wait_event.tasklet, orig_tid); |
| 6791 | return -1; |
| 6792 | } |
| 6793 | |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 6794 | if (h2c->wait_event.events) |
| 6795 | h2c->conn->xprt->unsubscribe(h2c->conn, h2c->conn->xprt_ctx, |
| 6796 | h2c->wait_event.events, &h2c->wait_event); |
| 6797 | /* To let the tasklet know it should free itself, and do nothing else, |
| 6798 | * set its context to NULL. |
| 6799 | */ |
| 6800 | h2c->wait_event.tasklet->context = NULL; |
Olivier Houchard | 1662cdb | 2020-07-03 14:04:37 +0200 | [diff] [blame] | 6801 | tasklet_wakeup_on(h2c->wait_event.tasklet, orig_tid); |
Willy Tarreau | 617e80f | 2020-07-01 16:39:33 +0200 | [diff] [blame] | 6802 | |
| 6803 | task = h2c->task; |
| 6804 | if (task) { |
| 6805 | task->context = NULL; |
| 6806 | h2c->task = NULL; |
| 6807 | __ha_barrier_store(); |
| 6808 | task_kill(task); |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 6809 | |
Willy Tarreau | beeabf5 | 2021-10-01 18:23:30 +0200 | [diff] [blame] | 6810 | h2c->task = task_new_here(); |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 6811 | if (!h2c->task) { |
| 6812 | h2_release(h2c); |
| 6813 | return -1; |
| 6814 | } |
| 6815 | h2c->task->process = h2_timeout_task; |
| 6816 | h2c->task->context = h2c; |
| 6817 | } |
| 6818 | h2c->wait_event.tasklet = tasklet_new(); |
| 6819 | if (!h2c->wait_event.tasklet) { |
| 6820 | h2_release(h2c); |
| 6821 | return -1; |
| 6822 | } |
| 6823 | h2c->wait_event.tasklet->process = h2_io_cb; |
| 6824 | h2c->wait_event.tasklet->context = h2c; |
| 6825 | h2c->conn->xprt->subscribe(h2c->conn, h2c->conn->xprt_ctx, |
| 6826 | SUB_RETRY_RECV, &h2c->wait_event); |
| 6827 | |
| 6828 | return 0; |
| 6829 | } |
| 6830 | |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6831 | /*******************************************************/ |
| 6832 | /* functions below are dedicated to the config parsers */ |
| 6833 | /*******************************************************/ |
| 6834 | |
Willy Tarreau | fe20e5b | 2017-07-27 11:42:14 +0200 | [diff] [blame] | 6835 | /* config parser for global "tune.h2.header-table-size" */ |
| 6836 | static int h2_parse_header_table_size(char **args, int section_type, struct proxy *curpx, |
Willy Tarreau | 0182516 | 2021-03-09 09:53:46 +0100 | [diff] [blame] | 6837 | const struct proxy *defpx, const char *file, int line, |
Willy Tarreau | fe20e5b | 2017-07-27 11:42:14 +0200 | [diff] [blame] | 6838 | char **err) |
| 6839 | { |
| 6840 | if (too_many_args(1, args, err, NULL)) |
| 6841 | return -1; |
| 6842 | |
| 6843 | h2_settings_header_table_size = atoi(args[1]); |
| 6844 | if (h2_settings_header_table_size < 4096 || h2_settings_header_table_size > 65536) { |
| 6845 | memprintf(err, "'%s' expects a numeric value between 4096 and 65536.", args[0]); |
| 6846 | return -1; |
| 6847 | } |
| 6848 | return 0; |
| 6849 | } |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6850 | |
Willy Tarreau | e6baec0 | 2017-07-27 11:45:11 +0200 | [diff] [blame] | 6851 | /* config parser for global "tune.h2.initial-window-size" */ |
| 6852 | static int h2_parse_initial_window_size(char **args, int section_type, struct proxy *curpx, |
Willy Tarreau | 0182516 | 2021-03-09 09:53:46 +0100 | [diff] [blame] | 6853 | const struct proxy *defpx, const char *file, int line, |
Willy Tarreau | e6baec0 | 2017-07-27 11:45:11 +0200 | [diff] [blame] | 6854 | char **err) |
| 6855 | { |
| 6856 | if (too_many_args(1, args, err, NULL)) |
| 6857 | return -1; |
| 6858 | |
| 6859 | h2_settings_initial_window_size = atoi(args[1]); |
| 6860 | if (h2_settings_initial_window_size < 0) { |
| 6861 | memprintf(err, "'%s' expects a positive numeric value.", args[0]); |
| 6862 | return -1; |
| 6863 | } |
| 6864 | return 0; |
| 6865 | } |
| 6866 | |
Willy Tarreau | 5242ef8 | 2017-07-27 11:47:28 +0200 | [diff] [blame] | 6867 | /* config parser for global "tune.h2.max-concurrent-streams" */ |
| 6868 | static int h2_parse_max_concurrent_streams(char **args, int section_type, struct proxy *curpx, |
Willy Tarreau | 0182516 | 2021-03-09 09:53:46 +0100 | [diff] [blame] | 6869 | const struct proxy *defpx, const char *file, int line, |
Willy Tarreau | 5242ef8 | 2017-07-27 11:47:28 +0200 | [diff] [blame] | 6870 | char **err) |
| 6871 | { |
| 6872 | if (too_many_args(1, args, err, NULL)) |
| 6873 | return -1; |
| 6874 | |
| 6875 | h2_settings_max_concurrent_streams = atoi(args[1]); |
Willy Tarreau | 5a490b6 | 2019-01-31 10:39:51 +0100 | [diff] [blame] | 6876 | if ((int)h2_settings_max_concurrent_streams < 0) { |
Willy Tarreau | 5242ef8 | 2017-07-27 11:47:28 +0200 | [diff] [blame] | 6877 | memprintf(err, "'%s' expects a positive numeric value.", args[0]); |
| 6878 | return -1; |
| 6879 | } |
| 6880 | return 0; |
| 6881 | } |
| 6882 | |
Willy Tarreau | a24b35c | 2019-02-21 13:24:36 +0100 | [diff] [blame] | 6883 | /* config parser for global "tune.h2.max-frame-size" */ |
| 6884 | static int h2_parse_max_frame_size(char **args, int section_type, struct proxy *curpx, |
Willy Tarreau | 0182516 | 2021-03-09 09:53:46 +0100 | [diff] [blame] | 6885 | const struct proxy *defpx, const char *file, int line, |
Willy Tarreau | a24b35c | 2019-02-21 13:24:36 +0100 | [diff] [blame] | 6886 | char **err) |
| 6887 | { |
| 6888 | if (too_many_args(1, args, err, NULL)) |
| 6889 | return -1; |
| 6890 | |
| 6891 | h2_settings_max_frame_size = atoi(args[1]); |
| 6892 | if (h2_settings_max_frame_size < 16384 || h2_settings_max_frame_size > 16777215) { |
| 6893 | memprintf(err, "'%s' expects a numeric value between 16384 and 16777215.", args[0]); |
| 6894 | return -1; |
| 6895 | } |
| 6896 | return 0; |
| 6897 | } |
| 6898 | |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6899 | |
| 6900 | /****************************************/ |
Ilya Shipitsin | 46a030c | 2020-07-05 16:36:08 +0500 | [diff] [blame] | 6901 | /* MUX initialization and instantiation */ |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6902 | /***************************************/ |
| 6903 | |
| 6904 | /* The mux operations */ |
Willy Tarreau | 680b2bd | 2018-11-27 07:30:17 +0100 | [diff] [blame] | 6905 | static const struct mux_ops h2_ops = { |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6906 | .init = h2_init, |
Olivier Houchard | 21df6cc | 2018-09-14 23:21:44 +0200 | [diff] [blame] | 6907 | .wake = h2_wake, |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6908 | .snd_buf = h2_snd_buf, |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 6909 | .rcv_buf = h2_rcv_buf, |
Olivier Houchard | 6ff2039 | 2018-07-17 18:46:31 +0200 | [diff] [blame] | 6910 | .subscribe = h2_subscribe, |
Olivier Houchard | 83a0cd8 | 2018-09-28 17:57:58 +0200 | [diff] [blame] | 6911 | .unsubscribe = h2_unsubscribe, |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6912 | .attach = h2_attach, |
Willy Tarreau | fafd398 | 2018-11-18 21:29:20 +0100 | [diff] [blame] | 6913 | .get_first_cs = h2_get_first_cs, |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6914 | .detach = h2_detach, |
Olivier Houchard | 060ed43 | 2018-11-06 16:32:42 +0100 | [diff] [blame] | 6915 | .destroy = h2_destroy, |
Olivier Houchard | d540b36 | 2018-11-05 18:37:53 +0100 | [diff] [blame] | 6916 | .avail_streams = h2_avail_streams, |
Willy Tarreau | 00f18a3 | 2019-01-26 12:19:01 +0100 | [diff] [blame] | 6917 | .used_streams = h2_used_streams, |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6918 | .shutr = h2_shutr, |
| 6919 | .shutw = h2_shutw, |
Olivier Houchard | 9b8e11e | 2019-10-25 16:19:26 +0200 | [diff] [blame] | 6920 | .ctl = h2_ctl, |
Willy Tarreau | e3f36cd | 2018-03-30 14:43:13 +0200 | [diff] [blame] | 6921 | .show_fd = h2_show_fd, |
Olivier Houchard | cd4159f | 2020-03-10 18:39:42 +0100 | [diff] [blame] | 6922 | .takeover = h2_takeover, |
Christopher Faulet | a97cced | 2022-04-12 18:04:10 +0200 | [diff] [blame] | 6923 | .flags = MX_FL_HTX|MX_FL_HOL_RISK|MX_FL_NO_UPG, |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6924 | .name = "H2", |
| 6925 | }; |
| 6926 | |
Christopher Faulet | 32f61c0 | 2018-04-10 14:33:41 +0200 | [diff] [blame] | 6927 | static struct mux_proto_list mux_proto_h2 = |
Christopher Faulet | c985f6c | 2019-07-15 11:42:52 +0200 | [diff] [blame] | 6928 | { .token = IST("h2"), .mode = PROTO_MODE_HTTP, .side = PROTO_SIDE_BOTH, .mux = &h2_ops }; |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6929 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 6930 | INITCALL1(STG_REGISTER, register_mux_proto, &mux_proto_h2); |
| 6931 | |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6932 | /* config keyword parsers */ |
| 6933 | static struct cfg_kw_list cfg_kws = {ILH, { |
Willy Tarreau | fe20e5b | 2017-07-27 11:42:14 +0200 | [diff] [blame] | 6934 | { CFG_GLOBAL, "tune.h2.header-table-size", h2_parse_header_table_size }, |
Willy Tarreau | e6baec0 | 2017-07-27 11:45:11 +0200 | [diff] [blame] | 6935 | { CFG_GLOBAL, "tune.h2.initial-window-size", h2_parse_initial_window_size }, |
Willy Tarreau | 5242ef8 | 2017-07-27 11:47:28 +0200 | [diff] [blame] | 6936 | { CFG_GLOBAL, "tune.h2.max-concurrent-streams", h2_parse_max_concurrent_streams }, |
Willy Tarreau | a24b35c | 2019-02-21 13:24:36 +0100 | [diff] [blame] | 6937 | { CFG_GLOBAL, "tune.h2.max-frame-size", h2_parse_max_frame_size }, |
Willy Tarreau | 62f5269 | 2017-10-08 23:01:42 +0200 | [diff] [blame] | 6938 | { 0, NULL, NULL } |
| 6939 | }}; |
| 6940 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 6941 | INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws); |
Willy Tarreau | 2bdcc70 | 2020-05-19 11:31:11 +0200 | [diff] [blame] | 6942 | |
| 6943 | /* initialize internal structs after the config is parsed. |
| 6944 | * Returns zero on success, non-zero on error. |
| 6945 | */ |
| 6946 | static int init_h2() |
| 6947 | { |
| 6948 | pool_head_hpack_tbl = create_pool("hpack_tbl", |
| 6949 | h2_settings_header_table_size, |
| 6950 | MEM_F_SHARED|MEM_F_EXACT); |
Christopher Faulet | 5214099 | 2020-11-06 15:23:39 +0100 | [diff] [blame] | 6951 | if (!pool_head_hpack_tbl) { |
| 6952 | ha_alert("failed to allocate hpack_tbl memory pool\n"); |
| 6953 | return (ERR_ALERT | ERR_FATAL); |
| 6954 | } |
| 6955 | return ERR_NONE; |
Willy Tarreau | 2bdcc70 | 2020-05-19 11:31:11 +0200 | [diff] [blame] | 6956 | } |
| 6957 | |
| 6958 | REGISTER_POST_CHECK(init_h2); |