Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Backend variables and functions. |
| 3 | * |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 4 | * Copyright 2000-2013 Willy Tarreau <w@1wt.eu> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 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 | |
| 13 | #include <errno.h> |
| 14 | #include <fcntl.h> |
| 15 | #include <stdio.h> |
| 16 | #include <stdlib.h> |
| 17 | #include <syslog.h> |
Willy Tarreau | f19cf37 | 2006-11-14 15:40:51 +0100 | [diff] [blame] | 18 | #include <string.h> |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 19 | #include <ctype.h> |
Dmitry Sivachenko | caf5898 | 2009-08-24 15:11:06 +0400 | [diff] [blame] | 20 | #include <sys/types.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 21 | |
Willy Tarreau | dcc048a | 2020-06-04 19:11:43 +0200 | [diff] [blame] | 22 | #include <haproxy/acl.h> |
Willy Tarreau | 4c7e4b7 | 2020-05-27 12:58:42 +0200 | [diff] [blame] | 23 | #include <haproxy/api.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 24 | #include <haproxy/arg.h> |
| 25 | #include <haproxy/backend.h> |
Willy Tarreau | f1d32c4 | 2020-06-04 21:07:02 +0200 | [diff] [blame] | 26 | #include <haproxy/channel.h> |
Willy Tarreau | 4aa573d | 2020-06-04 18:21:56 +0200 | [diff] [blame] | 27 | #include <haproxy/check.h> |
Willy Tarreau | 762d7a5 | 2020-06-04 11:23:07 +0200 | [diff] [blame] | 28 | #include <haproxy/frontend.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 29 | #include <haproxy/global.h> |
Willy Tarreau | 8d36697 | 2020-05-27 16:10:29 +0200 | [diff] [blame] | 30 | #include <haproxy/hash.h> |
Willy Tarreau | cd72d8c | 2020-06-02 19:11:26 +0200 | [diff] [blame] | 31 | #include <haproxy/http.h> |
Willy Tarreau | c2b1ff0 | 2020-06-04 21:21:03 +0200 | [diff] [blame] | 32 | #include <haproxy/http_ana.h> |
Willy Tarreau | 8773533 | 2020-06-04 09:08:41 +0200 | [diff] [blame] | 33 | #include <haproxy/http_htx.h> |
Willy Tarreau | 16f958c | 2020-06-03 08:44:35 +0200 | [diff] [blame] | 34 | #include <haproxy/htx.h> |
Willy Tarreau | fbe8da3 | 2020-06-04 14:34:27 +0200 | [diff] [blame] | 35 | #include <haproxy/lb_chash.h> |
Willy Tarreau | b5fc3bf | 2020-06-04 14:37:38 +0200 | [diff] [blame] | 36 | #include <haproxy/lb_fas.h> |
Willy Tarreau | 0254941 | 2020-06-04 14:41:04 +0200 | [diff] [blame] | 37 | #include <haproxy/lb_fwlc.h> |
Willy Tarreau | 546ba42 | 2020-06-04 14:45:03 +0200 | [diff] [blame] | 38 | #include <haproxy/lb_fwrr.h> |
Willy Tarreau | 2867159 | 2020-06-04 20:22:59 +0200 | [diff] [blame] | 39 | #include <haproxy/lb_map.h> |
Willy Tarreau | aeed4a8 | 2020-06-04 22:01:04 +0200 | [diff] [blame] | 40 | #include <haproxy/log.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 41 | #include <haproxy/namespace.h> |
Willy Tarreau | 8efbdfb | 2020-06-04 11:29:21 +0200 | [diff] [blame] | 42 | #include <haproxy/obj_type.h> |
Willy Tarreau | 469509b | 2020-06-04 15:13:30 +0200 | [diff] [blame] | 43 | #include <haproxy/payload.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 44 | #include <haproxy/proto_tcp.h> |
| 45 | #include <haproxy/protocol.h> |
Willy Tarreau | a264d96 | 2020-06-04 22:29:18 +0200 | [diff] [blame] | 46 | #include <haproxy/proxy.h> |
Willy Tarreau | a55c454 | 2020-06-04 22:59:39 +0200 | [diff] [blame] | 47 | #include <haproxy/queue.h> |
Willy Tarreau | b255105 | 2020-06-09 09:07:15 +0200 | [diff] [blame] | 48 | #include <haproxy/sample.h> |
Willy Tarreau | 1e56f92 | 2020-06-04 23:20:13 +0200 | [diff] [blame] | 49 | #include <haproxy/server.h> |
Willy Tarreau | 48d25b3 | 2020-06-04 18:58:52 +0200 | [diff] [blame] | 50 | #include <haproxy/session.h> |
Willy Tarreau | 209108d | 2020-06-04 20:30:20 +0200 | [diff] [blame] | 51 | #include <haproxy/ssl_sock.h> |
Willy Tarreau | dfd3de8 | 2020-06-04 23:46:14 +0200 | [diff] [blame] | 52 | #include <haproxy/stream.h> |
Willy Tarreau | 5e539c9 | 2020-06-04 20:45:39 +0200 | [diff] [blame] | 53 | #include <haproxy/stream_interface.h> |
Willy Tarreau | cea0e1b | 2020-06-04 17:25:40 +0200 | [diff] [blame] | 54 | #include <haproxy/task.h> |
Willy Tarreau | c2f7c58 | 2020-06-02 18:15:32 +0200 | [diff] [blame] | 55 | #include <haproxy/ticks.h> |
Willy Tarreau | 92b4f13 | 2020-06-01 11:05:15 +0200 | [diff] [blame] | 56 | #include <haproxy/time.h> |
Willy Tarreau | dfd3de8 | 2020-06-04 23:46:14 +0200 | [diff] [blame] | 57 | #include <haproxy/trace.h> |
Willy Tarreau | 732eac4 | 2015-07-09 11:40:25 +0200 | [diff] [blame] | 58 | |
Christopher Faulet | eea8fc7 | 2019-11-05 16:18:10 +0100 | [diff] [blame] | 59 | #define TRACE_SOURCE &trace_strm |
| 60 | |
Bhaskar Maddala | a20cb85 | 2014-02-03 16:26:46 -0500 | [diff] [blame] | 61 | int be_lastsession(const struct proxy *be) |
| 62 | { |
| 63 | if (be->be_counters.last_sess) |
| 64 | return now.tv_sec - be->be_counters.last_sess; |
| 65 | |
| 66 | return -1; |
| 67 | } |
| 68 | |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 69 | /* helper function to invoke the correct hash method */ |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 70 | static unsigned int gen_hash(const struct proxy* px, const char* key, unsigned long len) |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 71 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 72 | unsigned int hash; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 73 | |
| 74 | switch (px->lbprm.algo & BE_LB_HASH_FUNC) { |
| 75 | case BE_LB_HFCN_DJB2: |
| 76 | hash = hash_djb2(key, len); |
| 77 | break; |
Willy Tarreau | a0f4271 | 2013-11-14 14:30:35 +0100 | [diff] [blame] | 78 | case BE_LB_HFCN_WT6: |
| 79 | hash = hash_wt6(key, len); |
| 80 | break; |
Willy Tarreau | 324f07f | 2015-01-20 19:44:50 +0100 | [diff] [blame] | 81 | case BE_LB_HFCN_CRC32: |
| 82 | hash = hash_crc32(key, len); |
| 83 | break; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 84 | case BE_LB_HFCN_SDBM: |
| 85 | /* this is the default hash function */ |
| 86 | default: |
| 87 | hash = hash_sdbm(key, len); |
| 88 | break; |
| 89 | } |
| 90 | |
| 91 | return hash; |
| 92 | } |
| 93 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 94 | /* |
| 95 | * This function recounts the number of usable active and backup servers for |
| 96 | * proxy <p>. These numbers are returned into the p->srv_act and p->srv_bck. |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 97 | * This function also recomputes the total active and backup weights. However, |
Willy Tarreau | f4cca45 | 2008-03-08 21:42:54 +0100 | [diff] [blame] | 98 | * it does not update tot_weight nor tot_used. Use update_backend_weight() for |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 99 | * this. |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 100 | * This functions is designed to be called before server's weight and state |
| 101 | * commit so it uses 'next' weight and states values. |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 102 | * |
| 103 | * threads: this is the caller responsibility to lock data. For now, this |
| 104 | * function is called from lb modules, so it should be ok. But if you need to |
| 105 | * call it from another place, be careful (and update this comment). |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 106 | */ |
Willy Tarreau | c5d9c80 | 2009-10-01 09:17:05 +0200 | [diff] [blame] | 107 | void recount_servers(struct proxy *px) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 108 | { |
| 109 | struct server *srv; |
| 110 | |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 111 | px->srv_act = px->srv_bck = 0; |
| 112 | px->lbprm.tot_wact = px->lbprm.tot_wbck = 0; |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 113 | px->lbprm.fbck = NULL; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 114 | for (srv = px->srv; srv != NULL; srv = srv->next) { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 115 | if (!srv_willbe_usable(srv)) |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 116 | continue; |
| 117 | |
Willy Tarreau | c93cd16 | 2014-05-13 15:54:22 +0200 | [diff] [blame] | 118 | if (srv->flags & SRV_F_BACKUP) { |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 119 | if (!px->srv_bck && |
Willy Tarreau | f4cca45 | 2008-03-08 21:42:54 +0100 | [diff] [blame] | 120 | !(px->options & PR_O_USE_ALL_BK)) |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 121 | px->lbprm.fbck = srv; |
| 122 | px->srv_bck++; |
Andrew Rodland | 13d5ebb | 2016-10-25 12:49:45 -0400 | [diff] [blame] | 123 | srv->cumulative_weight = px->lbprm.tot_wbck; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 124 | px->lbprm.tot_wbck += srv->next_eweight; |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 125 | } else { |
| 126 | px->srv_act++; |
Andrew Rodland | 13d5ebb | 2016-10-25 12:49:45 -0400 | [diff] [blame] | 127 | srv->cumulative_weight = px->lbprm.tot_wact; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 128 | px->lbprm.tot_wact += srv->next_eweight; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 129 | } |
| 130 | } |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 131 | } |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 132 | |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 133 | /* This function simply updates the backend's tot_weight and tot_used values |
| 134 | * after servers weights have been updated. It is designed to be used after |
| 135 | * recount_servers() or equivalent. |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 136 | * |
| 137 | * threads: this is the caller responsibility to lock data. For now, this |
| 138 | * function is called from lb modules, so it should be ok. But if you need to |
| 139 | * call it from another place, be careful (and update this comment). |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 140 | */ |
Willy Tarreau | c5d9c80 | 2009-10-01 09:17:05 +0200 | [diff] [blame] | 141 | void update_backend_weight(struct proxy *px) |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 142 | { |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 143 | if (px->srv_act) { |
| 144 | px->lbprm.tot_weight = px->lbprm.tot_wact; |
| 145 | px->lbprm.tot_used = px->srv_act; |
| 146 | } |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 147 | else if (px->lbprm.fbck) { |
| 148 | /* use only the first backup server */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 149 | px->lbprm.tot_weight = px->lbprm.fbck->next_eweight; |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 150 | px->lbprm.tot_used = 1; |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 151 | } |
| 152 | else { |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 153 | px->lbprm.tot_weight = px->lbprm.tot_wbck; |
| 154 | px->lbprm.tot_used = px->srv_bck; |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 155 | } |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 156 | } |
| 157 | |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 158 | /* |
| 159 | * This function tries to find a running server for the proxy <px> following |
| 160 | * the source hash method. Depending on the number of active/backup servers, |
| 161 | * it will either look for active servers, or for backup servers. |
| 162 | * If any server is found, it will be returned. If no valid server is found, |
| 163 | * NULL is returned. |
| 164 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 165 | static struct server *get_server_sh(struct proxy *px, const char *addr, int len, const struct server *avoid) |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 166 | { |
| 167 | unsigned int h, l; |
| 168 | |
| 169 | if (px->lbprm.tot_weight == 0) |
| 170 | return NULL; |
| 171 | |
| 172 | l = h = 0; |
| 173 | |
| 174 | /* note: we won't hash if there's only one server left */ |
| 175 | if (px->lbprm.tot_used == 1) |
| 176 | goto hash_done; |
| 177 | |
| 178 | while ((l + sizeof (int)) <= len) { |
| 179 | h ^= ntohl(*(unsigned int *)(&addr[l])); |
| 180 | l += sizeof (int); |
| 181 | } |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 182 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 183 | h = full_hash(h); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 184 | hash_done: |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 185 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 186 | return chash_get_server_hash(px, h, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 187 | else |
| 188 | return map_get_server_hash(px, h); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | /* |
| 192 | * This function tries to find a running server for the proxy <px> following |
| 193 | * the URI hash method. In order to optimize cache hits, the hash computation |
| 194 | * ends at the question mark. Depending on the number of active/backup servers, |
| 195 | * it will either look for active servers, or for backup servers. |
| 196 | * If any server is found, it will be returned. If no valid server is found, |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 197 | * NULL is returned. The lbprm.arg_opt{1,2,3} values correspond respectively to |
| 198 | * the "whole" optional argument (boolean), the "len" argument (numeric) and |
| 199 | * the "depth" argument (numeric). |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 200 | * |
| 201 | * This code was contributed by Guillaume Dallaire, who also selected this hash |
| 202 | * algorithm out of a tens because it gave him the best results. |
| 203 | * |
| 204 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 205 | static struct server *get_server_uh(struct proxy *px, char *uri, int uri_len, const struct server *avoid) |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 206 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 207 | unsigned int hash = 0; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 208 | int c; |
| 209 | int slashes = 0; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 210 | const char *start, *end; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 211 | |
| 212 | if (px->lbprm.tot_weight == 0) |
| 213 | return NULL; |
| 214 | |
| 215 | /* note: we won't hash if there's only one server left */ |
| 216 | if (px->lbprm.tot_used == 1) |
| 217 | goto hash_done; |
| 218 | |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 219 | if (px->lbprm.arg_opt2) // "len" |
| 220 | uri_len = MIN(uri_len, px->lbprm.arg_opt2); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 221 | |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 222 | start = end = uri; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 223 | while (uri_len--) { |
Willy Tarreau | fad4ffc | 2014-10-17 12:11:50 +0200 | [diff] [blame] | 224 | c = *end; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 225 | if (c == '/') { |
| 226 | slashes++; |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 227 | if (slashes == px->lbprm.arg_opt3) /* depth+1 */ |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 228 | break; |
| 229 | } |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 230 | else if (c == '?' && !px->lbprm.arg_opt1) // "whole" |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 231 | break; |
Willy Tarreau | fad4ffc | 2014-10-17 12:11:50 +0200 | [diff] [blame] | 232 | end++; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 233 | } |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 234 | |
| 235 | hash = gen_hash(px, start, (end - start)); |
| 236 | |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 237 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 238 | hash = full_hash(hash); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 239 | hash_done: |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 240 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 241 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 242 | else |
| 243 | return map_get_server_hash(px, hash); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 244 | } |
| 245 | |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 246 | /* |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 247 | * This function tries to find a running server for the proxy <px> following |
| 248 | * the URL parameter hash method. It looks for a specific parameter in the |
| 249 | * URL and hashes it to compute the server ID. This is useful to optimize |
| 250 | * performance by avoiding bounces between servers in contexts where sessions |
| 251 | * are shared but cookies are not usable. If the parameter is not found, NULL |
| 252 | * is returned. If any server is found, it will be returned. If no valid server |
| 253 | * is found, NULL is returned. |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 254 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 255 | static struct server *get_server_ph(struct proxy *px, const char *uri, int uri_len, const struct server *avoid) |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 256 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 257 | unsigned int hash = 0; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 258 | const char *start, *end; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 259 | const char *p; |
| 260 | const char *params; |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 261 | int plen; |
| 262 | |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 263 | /* when tot_weight is 0 then so is srv_count */ |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 264 | if (px->lbprm.tot_weight == 0) |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 265 | return NULL; |
| 266 | |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 267 | if ((p = memchr(uri, '?', uri_len)) == NULL) |
| 268 | return NULL; |
| 269 | |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 270 | p++; |
| 271 | |
| 272 | uri_len -= (p - uri); |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 273 | plen = px->lbprm.arg_len; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 274 | params = p; |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 275 | |
| 276 | while (uri_len > plen) { |
| 277 | /* Look for the parameter name followed by an equal symbol */ |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 278 | if (params[plen] == '=') { |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 279 | if (memcmp(params, px->lbprm.arg_str, plen) == 0) { |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 280 | /* OK, we have the parameter here at <params>, and |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 281 | * the value after the equal sign, at <p> |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 282 | * skip the equal symbol |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 283 | */ |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 284 | p += plen + 1; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 285 | start = end = p; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 286 | uri_len -= plen + 1; |
| 287 | |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 288 | while (uri_len && *end != '&') { |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 289 | uri_len--; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 290 | end++; |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 291 | } |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 292 | hash = gen_hash(px, start, (end - start)); |
| 293 | |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 294 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 295 | hash = full_hash(hash); |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 296 | |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 297 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 298 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 299 | else |
| 300 | return map_get_server_hash(px, hash); |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 301 | } |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 302 | } |
| 303 | /* skip to next parameter */ |
| 304 | p = memchr(params, '&', uri_len); |
| 305 | if (!p) |
| 306 | return NULL; |
| 307 | p++; |
| 308 | uri_len -= (p - params); |
| 309 | params = p; |
| 310 | } |
| 311 | return NULL; |
| 312 | } |
| 313 | |
| 314 | /* |
| 315 | * this does the same as the previous server_ph, but check the body contents |
| 316 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 317 | static struct server *get_server_ph_post(struct stream *s, const struct server *avoid) |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 318 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 319 | unsigned int hash = 0; |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 320 | struct channel *req = &s->req; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 321 | struct proxy *px = s->be; |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 322 | struct htx *htx = htxbuf(&req->buf); |
| 323 | struct htx_blk *blk; |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 324 | unsigned int plen = px->lbprm.arg_len; |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 325 | unsigned long len; |
| 326 | const char *params, *p, *start, *end; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 327 | |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 328 | if (px->lbprm.tot_weight == 0) |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 329 | return NULL; |
| 330 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 331 | p = params = NULL; |
| 332 | len = 0; |
| 333 | for (blk = htx_get_first_blk(htx); blk; blk = htx_get_next_blk(htx, blk)) { |
| 334 | enum htx_blk_type type = htx_get_blk_type(blk); |
| 335 | struct ist v; |
Willy Tarreau | f69d4ff | 2015-05-02 00:05:47 +0200 | [diff] [blame] | 336 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 337 | if (type != HTX_BLK_DATA) |
| 338 | continue; |
| 339 | v = htx_get_blk_value(htx, blk); |
| 340 | p = params = v.ptr; |
| 341 | len = v.len; |
| 342 | break; |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 343 | } |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 344 | |
| 345 | while (len > plen) { |
| 346 | /* Look for the parameter name followed by an equal symbol */ |
| 347 | if (params[plen] == '=') { |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 348 | if (memcmp(params, px->lbprm.arg_str, plen) == 0) { |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 349 | /* OK, we have the parameter here at <params>, and |
| 350 | * the value after the equal sign, at <p> |
| 351 | * skip the equal symbol |
| 352 | */ |
| 353 | p += plen + 1; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 354 | start = end = p; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 355 | len -= plen + 1; |
| 356 | |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 357 | while (len && *end != '&') { |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 358 | if (unlikely(!HTTP_IS_TOKEN(*p))) { |
Willy Tarreau | 157dd63 | 2009-12-06 19:18:09 +0100 | [diff] [blame] | 359 | /* if in a POST, body must be URI encoded or it's not a URI. |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 360 | * Do not interpret any possible binary data as a parameter. |
Willy Tarreau | 157dd63 | 2009-12-06 19:18:09 +0100 | [diff] [blame] | 361 | */ |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 362 | if (likely(HTTP_IS_LWS(*p))) /* eol, uncertain uri len */ |
| 363 | break; |
| 364 | return NULL; /* oh, no; this is not uri-encoded. |
| 365 | * This body does not contain parameters. |
| 366 | */ |
| 367 | } |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 368 | len--; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 369 | end++; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 370 | /* should we break if vlen exceeds limit? */ |
| 371 | } |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 372 | hash = gen_hash(px, start, (end - start)); |
| 373 | |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 374 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 375 | hash = full_hash(hash); |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 376 | |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 377 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 378 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 379 | else |
| 380 | return map_get_server_hash(px, hash); |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 381 | } |
| 382 | } |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 383 | /* skip to next parameter */ |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 384 | p = memchr(params, '&', len); |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 385 | if (!p) |
| 386 | return NULL; |
| 387 | p++; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 388 | len -= (p - params); |
| 389 | params = p; |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 390 | } |
| 391 | return NULL; |
| 392 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 393 | |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 394 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 395 | /* |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 396 | * This function tries to find a running server for the proxy <px> following |
| 397 | * the Header parameter hash method. It looks for a specific parameter in the |
| 398 | * URL and hashes it to compute the server ID. This is useful to optimize |
| 399 | * performance by avoiding bounces between servers in contexts where sessions |
| 400 | * are shared but cookies are not usable. If the parameter is not found, NULL |
| 401 | * is returned. If any server is found, it will be returned. If no valid server |
Willy Tarreau | 9fed858 | 2019-01-14 16:04:54 +0100 | [diff] [blame] | 402 | * is found, NULL is returned. When lbprm.arg_opt1 is set, the hash will only |
| 403 | * apply to the middle part of a domain name ("use_domain_only" option). |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 404 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 405 | static struct server *get_server_hh(struct stream *s, const struct server *avoid) |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 406 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 407 | unsigned int hash = 0; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 408 | struct proxy *px = s->be; |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 409 | unsigned int plen = px->lbprm.arg_len; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 410 | unsigned long len; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 411 | const char *p; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 412 | const char *start, *end; |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 413 | struct htx *htx = htxbuf(&s->req.buf); |
| 414 | struct http_hdr_ctx ctx = { .blk = NULL }; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 415 | |
| 416 | /* tot_weight appears to mean srv_count */ |
| 417 | if (px->lbprm.tot_weight == 0) |
| 418 | return NULL; |
| 419 | |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 420 | /* note: we won't hash if there's only one server left */ |
| 421 | if (px->lbprm.tot_used == 1) |
| 422 | goto hash_done; |
| 423 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 424 | http_find_header(htx, ist2(px->lbprm.arg_str, plen), &ctx, 0); |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 425 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 426 | /* if the header is not found or empty, let's fallback to round robin */ |
| 427 | if (!ctx.blk || !ctx.value.len) |
| 428 | return NULL; |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 429 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 430 | /* Found a the param_name in the headers. |
| 431 | * we will compute the hash based on this value ctx.val. |
| 432 | */ |
| 433 | len = ctx.value.len; |
| 434 | p = ctx.value.ptr; |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 435 | |
Willy Tarreau | 9fed858 | 2019-01-14 16:04:54 +0100 | [diff] [blame] | 436 | if (!px->lbprm.arg_opt1) { |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 437 | hash = gen_hash(px, p, len); |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 438 | } else { |
| 439 | int dohash = 0; |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 440 | p += len; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 441 | /* special computation, use only main domain name, not tld/host |
| 442 | * going back from the end of string, start hashing at first |
| 443 | * dot stop at next. |
| 444 | * This is designed to work with the 'Host' header, and requires |
| 445 | * a special option to activate this. |
| 446 | */ |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 447 | end = p; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 448 | while (len) { |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 449 | if (dohash) { |
| 450 | /* Rewind the pointer until the previous char |
| 451 | * is a dot, this will allow to set the start |
| 452 | * position of the domain. */ |
| 453 | if (*(p - 1) == '.') |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 454 | break; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 455 | } |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 456 | else if (*p == '.') { |
| 457 | /* The pointer is rewinded to the dot before the |
| 458 | * tld, we memorize the end of the domain and |
| 459 | * can enter the domain processing. */ |
| 460 | end = p; |
| 461 | dohash = 1; |
| 462 | } |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 463 | p--; |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 464 | len--; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 465 | } |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 466 | start = p; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 467 | hash = gen_hash(px, start, (end - start)); |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 468 | } |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 469 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 470 | hash = full_hash(hash); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 471 | hash_done: |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 472 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 473 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 474 | else |
| 475 | return map_get_server_hash(px, hash); |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 476 | } |
| 477 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 478 | /* RDP Cookie HASH. */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 479 | static struct server *get_server_rch(struct stream *s, const struct server *avoid) |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 480 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 481 | unsigned int hash = 0; |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 482 | struct proxy *px = s->be; |
| 483 | unsigned long len; |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 484 | int ret; |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 485 | struct sample smp; |
Willy Tarreau | d1de8af | 2012-05-18 22:12:14 +0200 | [diff] [blame] | 486 | int rewind; |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 487 | |
| 488 | /* tot_weight appears to mean srv_count */ |
| 489 | if (px->lbprm.tot_weight == 0) |
| 490 | return NULL; |
| 491 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 492 | memset(&smp, 0, sizeof(smp)); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 493 | |
Willy Tarreau | 6a445eb | 2018-06-19 07:04:45 +0200 | [diff] [blame] | 494 | rewind = co_data(&s->req); |
| 495 | c_rew(&s->req, rewind); |
Willy Tarreau | d1de8af | 2012-05-18 22:12:14 +0200 | [diff] [blame] | 496 | |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 497 | ret = fetch_rdp_cookie_name(s, &smp, px->lbprm.arg_str, px->lbprm.arg_len); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 498 | len = smp.data.u.str.data; |
Willy Tarreau | 664092c | 2011-12-16 19:11:42 +0100 | [diff] [blame] | 499 | |
Willy Tarreau | bcbd393 | 2018-06-06 07:13:22 +0200 | [diff] [blame] | 500 | c_adv(&s->req, rewind); |
Willy Tarreau | d1de8af | 2012-05-18 22:12:14 +0200 | [diff] [blame] | 501 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 502 | if (ret == 0 || (smp.flags & SMP_F_MAY_CHANGE) || len == 0) |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 503 | return NULL; |
| 504 | |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 505 | /* note: we won't hash if there's only one server left */ |
| 506 | if (px->lbprm.tot_used == 1) |
| 507 | goto hash_done; |
| 508 | |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 509 | /* Found the param_name in the headers. |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 510 | * we will compute the hash based on this value ctx.val. |
| 511 | */ |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 512 | hash = gen_hash(px, smp.data.u.str.area, len); |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 513 | |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 514 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 515 | hash = full_hash(hash); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 516 | hash_done: |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 517 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 518 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 519 | else |
| 520 | return map_get_server_hash(px, hash); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 521 | } |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 522 | |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 523 | /* random value */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 524 | static struct server *get_server_rnd(struct stream *s, const struct server *avoid) |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 525 | { |
| 526 | unsigned int hash = 0; |
| 527 | struct proxy *px = s->be; |
Willy Tarreau | 21c741a | 2019-01-14 18:14:27 +0100 | [diff] [blame] | 528 | struct server *prev, *curr; |
| 529 | int draws = px->lbprm.arg_opt1; // number of draws |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 530 | |
| 531 | /* tot_weight appears to mean srv_count */ |
| 532 | if (px->lbprm.tot_weight == 0) |
| 533 | return NULL; |
| 534 | |
Willy Tarreau | 21c741a | 2019-01-14 18:14:27 +0100 | [diff] [blame] | 535 | curr = NULL; |
| 536 | do { |
| 537 | prev = curr; |
Willy Tarreau | b9f54c5 | 2020-03-08 17:31:39 +0100 | [diff] [blame] | 538 | hash = ha_random32(); |
Willy Tarreau | 21c741a | 2019-01-14 18:14:27 +0100 | [diff] [blame] | 539 | curr = chash_get_server_hash(px, hash, avoid); |
| 540 | if (!curr) |
| 541 | break; |
| 542 | |
| 543 | /* compare the new server to the previous best choice and pick |
| 544 | * the one with the least currently served requests. |
| 545 | */ |
| 546 | if (prev && prev != curr && |
| 547 | curr->served * prev->cur_eweight > prev->served * curr->cur_eweight) |
| 548 | curr = prev; |
| 549 | } while (--draws > 0); |
| 550 | |
| 551 | return curr; |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 552 | } |
| 553 | |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 554 | /* |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 555 | * This function applies the load-balancing algorithm to the stream, as |
| 556 | * defined by the backend it is assigned to. The stream is then marked as |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 557 | * 'assigned'. |
| 558 | * |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 559 | * This function MAY NOT be called with SF_ASSIGNED already set. If the stream |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 560 | * had a server previously assigned, it is rebalanced, trying to avoid the same |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 561 | * server, which should still be present in target_srv(&s->target) before the call. |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 562 | * The function tries to keep the original connection slot if it reconnects to |
| 563 | * the same server, otherwise it releases it and tries to offer it. |
| 564 | * |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 565 | * It is illegal to call this function with a stream in a queue. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 566 | * |
| 567 | * It may return : |
Willy Tarreau | 664beb8 | 2011-03-10 11:38:29 +0100 | [diff] [blame] | 568 | * SRV_STATUS_OK if everything is OK. ->srv and ->target are assigned. |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 569 | * SRV_STATUS_NOSRV if no server is available. Stream is not ASSIGNED |
| 570 | * SRV_STATUS_FULL if all servers are saturated. Stream is not ASSIGNED |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 571 | * SRV_STATUS_INTERNAL for other unrecoverable errors. |
| 572 | * |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 573 | * Upon successful return, the stream flag SF_ASSIGNED is set to indicate that |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 574 | * it does not need to be called anymore. This means that target_srv(&s->target) |
| 575 | * can be trusted in balance and direct modes. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 576 | * |
| 577 | */ |
| 578 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 579 | int assign_server(struct stream *s) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 580 | { |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 581 | struct connection *conn = NULL; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 582 | struct server *conn_slot; |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 583 | struct server *srv = NULL, *prev_srv; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 584 | int err; |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 585 | |
Simon Horman | 8effd3d | 2011-08-13 08:03:52 +0900 | [diff] [blame] | 586 | DPRINTF(stderr,"assign_server : s=%p\n",s); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 587 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 588 | err = SRV_STATUS_INTERNAL; |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 589 | if (unlikely(s->pend_pos || s->flags & SF_ASSIGNED)) |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 590 | goto out_err; |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 591 | |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 592 | prev_srv = objt_server(s->target); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 593 | conn_slot = s->srv_conn; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 594 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 595 | /* We have to release any connection slot before applying any LB algo, |
| 596 | * otherwise we may erroneously end up with no available slot. |
| 597 | */ |
| 598 | if (conn_slot) |
| 599 | sess_change_server(s, NULL); |
| 600 | |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 601 | /* We will now try to find the good server and store it into <objt_server(s->target)>. |
| 602 | * Note that <objt_server(s->target)> may be NULL in case of dispatch or proxy mode, |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 603 | * as well as if no server is available (check error code). |
| 604 | */ |
Willy Tarreau | 1a20a5d | 2007-11-01 21:08:19 +0100 | [diff] [blame] | 605 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 606 | srv = NULL; |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 607 | s->target = NULL; |
Willy Tarreau | 664beb8 | 2011-03-10 11:38:29 +0100 | [diff] [blame] | 608 | |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 609 | if ((s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_HI && |
Olivier Houchard | 250031e | 2019-05-29 15:01:50 +0200 | [diff] [blame] | 610 | ((s->sess->flags & SESS_FL_PREFER_LAST) || |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 611 | (s->be->options & PR_O_PREF_LAST))) { |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 612 | struct sess_srv_list *srv_list; |
| 613 | list_for_each_entry(srv_list, &s->sess->srv_list, srv_list) { |
| 614 | struct server *tmpsrv = objt_server(srv_list->target); |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 615 | |
| 616 | if (tmpsrv && tmpsrv->proxy == s->be && |
Olivier Houchard | 250031e | 2019-05-29 15:01:50 +0200 | [diff] [blame] | 617 | ((s->sess->flags & SESS_FL_PREFER_LAST) || |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 618 | (!s->be->max_ka_queue || |
| 619 | server_has_room(tmpsrv) || ( |
| 620 | tmpsrv->nbpend + 1 < s->be->max_ka_queue))) && |
| 621 | srv_currently_usable(tmpsrv)) { |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 622 | list_for_each_entry(conn, &srv_list->conn_list, session_list) { |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 623 | if (!(conn->flags & CO_FL_WAIT_XPRT)) { |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 624 | srv = tmpsrv; |
| 625 | s->target = &srv->obj_type; |
| 626 | goto out_ok; |
| 627 | } |
| 628 | } |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 629 | } |
| 630 | } |
Willy Tarreau | 9420b12 | 2013-12-15 18:58:25 +0100 | [diff] [blame] | 631 | } |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 632 | if (s->be->lbprm.algo & BE_LB_KIND) { |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 633 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 634 | /* we must check if we have at least one server available */ |
| 635 | if (!s->be->lbprm.tot_weight) { |
| 636 | err = SRV_STATUS_NOSRV; |
| 637 | goto out; |
| 638 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 639 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 640 | /* First check whether we need to fetch some data or simply call |
| 641 | * the LB lookup function. Only the hashing functions will need |
| 642 | * some input data in fact, and will support multiple algorithms. |
| 643 | */ |
| 644 | switch (s->be->lbprm.algo & BE_LB_LKUP) { |
| 645 | case BE_LB_LKUP_RRTREE: |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 646 | srv = fwrr_get_next_server(s->be, prev_srv); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 647 | break; |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 648 | |
Willy Tarreau | f09c660 | 2012-02-13 17:12:08 +0100 | [diff] [blame] | 649 | case BE_LB_LKUP_FSTREE: |
| 650 | srv = fas_get_next_server(s->be, prev_srv); |
| 651 | break; |
| 652 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 653 | case BE_LB_LKUP_LCTREE: |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 654 | srv = fwlc_get_next_server(s->be, prev_srv); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 655 | break; |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 656 | |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 657 | case BE_LB_LKUP_CHTREE: |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 658 | case BE_LB_LKUP_MAP: |
Willy Tarreau | 9757a38 | 2009-10-03 12:56:50 +0200 | [diff] [blame] | 659 | if ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR) { |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 660 | if ((s->be->lbprm.algo & BE_LB_PARM) == BE_LB_RR_RANDOM) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 661 | srv = get_server_rnd(s, prev_srv); |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 662 | else if ((s->be->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 663 | srv = chash_get_next_server(s->be, prev_srv); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 664 | else |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 665 | srv = map_get_server_rr(s->be, prev_srv); |
Willy Tarreau | 9757a38 | 2009-10-03 12:56:50 +0200 | [diff] [blame] | 666 | break; |
| 667 | } |
| 668 | else if ((s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_HI) { |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 669 | /* unknown balancing algorithm */ |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 670 | err = SRV_STATUS_INTERNAL; |
| 671 | goto out; |
| 672 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 673 | |
| 674 | switch (s->be->lbprm.algo & BE_LB_PARM) { |
| 675 | case BE_LB_HASH_SRC: |
Willy Tarreau | d0d8da9 | 2015-04-04 02:10:38 +0200 | [diff] [blame] | 676 | conn = objt_conn(strm_orig(s)); |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 677 | if (conn && conn_get_src(conn) && conn->src->ss_family == AF_INET) { |
Willy Tarreau | 5dd7fa1 | 2012-03-31 19:53:37 +0200 | [diff] [blame] | 678 | srv = get_server_sh(s->be, |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 679 | (void *)&((struct sockaddr_in *)conn->src)->sin_addr, |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 680 | 4, prev_srv); |
Willy Tarreau | 5dd7fa1 | 2012-03-31 19:53:37 +0200 | [diff] [blame] | 681 | } |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 682 | else if (conn && conn_get_src(conn) && conn->src->ss_family == AF_INET6) { |
Willy Tarreau | 5dd7fa1 | 2012-03-31 19:53:37 +0200 | [diff] [blame] | 683 | srv = get_server_sh(s->be, |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 684 | (void *)&((struct sockaddr_in6 *)conn->src)->sin6_addr, |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 685 | 16, prev_srv); |
Willy Tarreau | 5dd7fa1 | 2012-03-31 19:53:37 +0200 | [diff] [blame] | 686 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 687 | else { |
| 688 | /* unknown IP family */ |
| 689 | err = SRV_STATUS_INTERNAL; |
| 690 | goto out; |
| 691 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 692 | break; |
| 693 | |
| 694 | case BE_LB_HASH_URI: |
| 695 | /* URI hashing */ |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 696 | if (IS_HTX_STRM(s) && s->txn->req.msg_state >= HTTP_MSG_BODY) { |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 697 | struct ist uri; |
| 698 | |
Christopher Faulet | 297fbb4 | 2019-05-13 14:41:27 +0200 | [diff] [blame] | 699 | uri = htx_sl_req_uri(http_get_stline(htxbuf(&s->req.buf))); |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 700 | srv = get_server_uh(s->be, uri.ptr, uri.len, prev_srv); |
| 701 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 702 | break; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 703 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 704 | case BE_LB_HASH_PRM: |
| 705 | /* URL Parameter hashing */ |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 706 | if (IS_HTX_STRM(s) && s->txn->req.msg_state >= HTTP_MSG_BODY) { |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 707 | struct ist uri; |
| 708 | |
Christopher Faulet | 297fbb4 | 2019-05-13 14:41:27 +0200 | [diff] [blame] | 709 | uri = htx_sl_req_uri(http_get_stline(htxbuf(&s->req.buf))); |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 710 | srv = get_server_ph(s->be, uri.ptr, uri.len, prev_srv); |
Willy Tarreau | 61a21a3 | 2011-03-01 20:35:49 +0100 | [diff] [blame] | 711 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 712 | if (!srv && s->txn->meth == HTTP_METH_POST) |
| 713 | srv = get_server_ph_post(s, prev_srv); |
| 714 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 715 | break; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 716 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 717 | case BE_LB_HASH_HDR: |
| 718 | /* Header Parameter hashing */ |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 719 | if (IS_HTX_STRM(s) && s->txn->req.msg_state >= HTTP_MSG_BODY) |
| 720 | srv = get_server_hh(s, prev_srv); |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 721 | break; |
| 722 | |
| 723 | case BE_LB_HASH_RDP: |
| 724 | /* RDP Cookie hashing */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 725 | srv = get_server_rch(s, prev_srv); |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 726 | break; |
| 727 | |
| 728 | default: |
| 729 | /* unknown balancing algorithm */ |
| 730 | err = SRV_STATUS_INTERNAL; |
| 731 | goto out; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 732 | } |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 733 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 734 | /* If the hashing parameter was not found, let's fall |
| 735 | * back to round robin on the map. |
| 736 | */ |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 737 | if (!srv) { |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 738 | if ((s->be->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 739 | srv = chash_get_next_server(s->be, prev_srv); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 740 | else |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 741 | srv = map_get_server_rr(s->be, prev_srv); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 742 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 743 | |
| 744 | /* end of map-based LB */ |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 745 | break; |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 746 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 747 | default: |
| 748 | /* unknown balancing algorithm */ |
| 749 | err = SRV_STATUS_INTERNAL; |
| 750 | goto out; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 751 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 752 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 753 | if (!srv) { |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 754 | err = SRV_STATUS_FULL; |
| 755 | goto out; |
| 756 | } |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 757 | else if (srv != prev_srv) { |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 758 | _HA_ATOMIC_ADD(&s->be->be_counters.cum_lbconn, 1); |
| 759 | _HA_ATOMIC_ADD(&srv->counters.cum_lbconn, 1); |
Alexandre Cassen | 5eb1a90 | 2007-11-29 15:43:32 +0100 | [diff] [blame] | 760 | } |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 761 | s->target = &srv->obj_type; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 762 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 763 | else if (s->be->options & (PR_O_DISPATCH | PR_O_TRANSP)) { |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 764 | s->target = &s->be->obj_type; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 765 | } |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 766 | else if ((s->be->options & PR_O_HTTP_PROXY)) { |
| 767 | conn = cs_conn(objt_cs(s->si[1].end)); |
| 768 | |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 769 | if (conn && conn->dst && is_addr(conn->dst)) { |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 770 | /* in proxy mode, we need a valid destination address */ |
| 771 | s->target = &s->be->obj_type; |
| 772 | } else { |
| 773 | err = SRV_STATUS_NOSRV; |
| 774 | goto out; |
| 775 | } |
Willy Tarreau | 664beb8 | 2011-03-10 11:38:29 +0100 | [diff] [blame] | 776 | } |
| 777 | else { |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 778 | err = SRV_STATUS_NOSRV; |
| 779 | goto out; |
| 780 | } |
| 781 | |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 782 | out_ok: |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 783 | s->flags |= SF_ASSIGNED; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 784 | err = SRV_STATUS_OK; |
| 785 | out: |
| 786 | |
| 787 | /* Either we take back our connection slot, or we offer it to someone |
| 788 | * else if we don't need it anymore. |
| 789 | */ |
| 790 | if (conn_slot) { |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 791 | if (conn_slot == srv) { |
| 792 | sess_change_server(s, srv); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 793 | } else { |
| 794 | if (may_dequeue_tasks(conn_slot, s->be)) |
| 795 | process_srv_queue(conn_slot); |
| 796 | } |
| 797 | } |
| 798 | |
| 799 | out_err: |
| 800 | return err; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 801 | } |
| 802 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 803 | /* |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 804 | * This function assigns a server address to a stream, and sets SF_ADDR_SET. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 805 | * The address is taken from the currently assigned server, or from the |
| 806 | * dispatch or transparent address. |
| 807 | * |
| 808 | * It may return : |
| 809 | * SRV_STATUS_OK if everything is OK. |
| 810 | * SRV_STATUS_INTERNAL for other unrecoverable errors. |
| 811 | * |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 812 | * Upon successful return, the stream flag SF_ADDR_SET is set. This flag is |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 813 | * not cleared, so it's to the caller to clear it if required. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 814 | */ |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 815 | int assign_server_address(struct stream *s) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 816 | { |
Willy Tarreau | d0d8da9 | 2015-04-04 02:10:38 +0200 | [diff] [blame] | 817 | struct connection *cli_conn = objt_conn(strm_orig(s)); |
Willy Tarreau | b363a1f | 2013-10-01 10:45:07 +0200 | [diff] [blame] | 818 | |
Christopher Faulet | 56803b1 | 2017-11-24 16:06:18 +0100 | [diff] [blame] | 819 | DPRINTF(stderr,"assign_server_address : s=%p\n",s); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 820 | |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 821 | if (!sockaddr_alloc(&s->target_addr)) |
Willy Tarreau | ca79f59 | 2019-07-17 19:04:47 +0200 | [diff] [blame] | 822 | return SRV_STATUS_INTERNAL; |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 823 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 824 | if ((s->flags & SF_DIRECT) || (s->be->lbprm.algo & BE_LB_KIND)) { |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 825 | /* A server is necessarily known for this stream */ |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 826 | if (!(s->flags & SF_ASSIGNED)) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 827 | return SRV_STATUS_INTERNAL; |
| 828 | |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 829 | *s->target_addr = __objt_server(s->target)->addr; |
| 830 | set_host_port(s->target_addr, __objt_server(s->target)->svc_port); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 831 | |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 832 | if (!is_addr(s->target_addr) && cli_conn) { |
Willy Tarreau | d669a4f | 2010-07-13 14:49:50 +0200 | [diff] [blame] | 833 | /* if the server has no address, we use the same address |
| 834 | * the client asked, which is handy for remapping ports |
Willy Tarreau | 9cf8d3f | 2014-05-09 22:56:10 +0200 | [diff] [blame] | 835 | * locally on multiple addresses at once. Nothing is done |
| 836 | * for AF_UNIX addresses. |
Willy Tarreau | d669a4f | 2010-07-13 14:49:50 +0200 | [diff] [blame] | 837 | */ |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 838 | if (!conn_get_dst(cli_conn)) { |
| 839 | /* do nothing if we can't retrieve the address */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 840 | } else if (cli_conn->dst->ss_family == AF_INET) { |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 841 | ((struct sockaddr_in *)s->target_addr)->sin_addr = ((struct sockaddr_in *)cli_conn->dst)->sin_addr; |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 842 | } else if (cli_conn->dst->ss_family == AF_INET6) { |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 843 | ((struct sockaddr_in6 *)s->target_addr)->sin6_addr = ((struct sockaddr_in6 *)cli_conn->dst)->sin6_addr; |
Emeric Brun | ec810d1 | 2010-10-22 16:36:33 +0200 | [diff] [blame] | 844 | } |
Willy Tarreau | d669a4f | 2010-07-13 14:49:50 +0200 | [diff] [blame] | 845 | } |
| 846 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 847 | /* if this server remaps proxied ports, we'll use |
| 848 | * the port the client connected to with an offset. */ |
Willy Tarreau | 1e582e5 | 2018-09-20 11:29:28 +0200 | [diff] [blame] | 849 | if ((__objt_server(s->target)->flags & SRV_F_MAPPORTS) && cli_conn) { |
David du Colombier | 6f5ccb1 | 2011-03-10 22:26:24 +0100 | [diff] [blame] | 850 | int base_port; |
| 851 | |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 852 | if (conn_get_dst(cli_conn)) { |
| 853 | /* First, retrieve the port from the incoming connection */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 854 | base_port = get_host_port(cli_conn->dst); |
David du Colombier | 6f5ccb1 | 2011-03-10 22:26:24 +0100 | [diff] [blame] | 855 | |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 856 | /* Second, assign the outgoing connection's port */ |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 857 | base_port += get_host_port(s->target_addr); |
| 858 | set_host_port(s->target_addr, base_port); |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 859 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 860 | } |
| 861 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 862 | else if (s->be->options & PR_O_DISPATCH) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 863 | /* connect to the defined dispatch addr */ |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 864 | *s->target_addr = s->be->dispatch_addr; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 865 | } |
Willy Tarreau | b363a1f | 2013-10-01 10:45:07 +0200 | [diff] [blame] | 866 | else if ((s->be->options & PR_O_TRANSP) && cli_conn) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 867 | /* in transparent mode, use the original dest addr if no dispatch specified */ |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 868 | if (conn_get_dst(cli_conn) && |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 869 | (cli_conn->dst->ss_family == AF_INET || cli_conn->dst->ss_family == AF_INET6)) |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 870 | *s->target_addr = *cli_conn->dst; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 871 | } |
Alexandre Cassen | 5eb1a90 | 2007-11-29 15:43:32 +0100 | [diff] [blame] | 872 | else if (s->be->options & PR_O_HTTP_PROXY) { |
| 873 | /* If HTTP PROXY option is set, then server is already assigned |
| 874 | * during incoming client request parsing. */ |
| 875 | } |
Willy Tarreau | 1a1158b | 2007-01-20 11:07:46 +0100 | [diff] [blame] | 876 | else { |
| 877 | /* no server and no LB algorithm ! */ |
| 878 | return SRV_STATUS_INTERNAL; |
| 879 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 880 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 881 | s->flags |= SF_ADDR_SET; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 882 | return SRV_STATUS_OK; |
| 883 | } |
| 884 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 885 | /* This function assigns a server to stream <s> if required, and can add the |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 886 | * connection to either the assigned server's queue or to the proxy's queue. |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 887 | * If ->srv_conn is set, the stream is first released from the server. |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 888 | * It may also be called with SF_DIRECT and/or SF_ASSIGNED though. It will |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 889 | * be called before any connection and after any retry or redispatch occurs. |
| 890 | * |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 891 | * It is not allowed to call this function with a stream in a queue. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 892 | * |
| 893 | * Returns : |
| 894 | * |
| 895 | * SRV_STATUS_OK if everything is OK. |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 896 | * SRV_STATUS_NOSRV if no server is available. objt_server(s->target) = NULL. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 897 | * SRV_STATUS_QUEUED if the connection has been queued. |
| 898 | * SRV_STATUS_FULL if the server(s) is/are saturated and the |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 899 | * connection could not be queued at the server's, |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 900 | * which may be NULL if we queue on the backend. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 901 | * SRV_STATUS_INTERNAL for other unrecoverable errors. |
| 902 | * |
| 903 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 904 | int assign_server_and_queue(struct stream *s) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 905 | { |
| 906 | struct pendconn *p; |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 907 | struct server *srv; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 908 | int err; |
| 909 | |
| 910 | if (s->pend_pos) |
| 911 | return SRV_STATUS_INTERNAL; |
| 912 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 913 | err = SRV_STATUS_OK; |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 914 | if (!(s->flags & SF_ASSIGNED)) { |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 915 | struct server *prev_srv = objt_server(s->target); |
Willy Tarreau | 3d80d91 | 2011-03-10 11:42:13 +0100 | [diff] [blame] | 916 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 917 | err = assign_server(s); |
Willy Tarreau | 3d80d91 | 2011-03-10 11:42:13 +0100 | [diff] [blame] | 918 | if (prev_srv) { |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 919 | /* This stream was previously assigned to a server. We have to |
| 920 | * update the stream's and the server's stats : |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 921 | * - if the server changed : |
| 922 | * - set TX_CK_DOWN if txn.flags was TX_CK_VALID |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 923 | * - set SF_REDISP if it was successfully redispatched |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 924 | * - increment srv->redispatches and be->redispatches |
| 925 | * - if the server remained the same : update retries. |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 926 | */ |
| 927 | |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 928 | if (prev_srv != objt_server(s->target)) { |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 929 | if (s->txn && (s->txn->flags & TX_CK_MASK) == TX_CK_VALID) { |
| 930 | s->txn->flags &= ~TX_CK_MASK; |
| 931 | s->txn->flags |= TX_CK_DOWN; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 932 | } |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 933 | s->flags |= SF_REDISP; |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 934 | _HA_ATOMIC_ADD(&prev_srv->counters.redispatches, 1); |
| 935 | _HA_ATOMIC_ADD(&s->be->be_counters.redispatches, 1); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 936 | } else { |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 937 | _HA_ATOMIC_ADD(&prev_srv->counters.retries, 1); |
| 938 | _HA_ATOMIC_ADD(&s->be->be_counters.retries, 1); |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 939 | } |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 940 | } |
| 941 | } |
| 942 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 943 | switch (err) { |
| 944 | case SRV_STATUS_OK: |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 945 | /* we have SF_ASSIGNED set */ |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 946 | srv = objt_server(s->target); |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 947 | if (!srv) |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 948 | return SRV_STATUS_OK; /* dispatch or proxy mode */ |
| 949 | |
| 950 | /* If we already have a connection slot, no need to check any queue */ |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 951 | if (s->srv_conn == srv) |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 952 | return SRV_STATUS_OK; |
| 953 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 954 | /* OK, this stream already has an assigned server, but no |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 955 | * connection slot yet. Either it is a redispatch, or it was |
| 956 | * assigned from persistence information (direct mode). |
| 957 | */ |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 958 | if ((s->flags & SF_REDIRECTABLE) && srv->rdr_len) { |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 959 | /* server scheduled for redirection, and already assigned. We |
| 960 | * don't want to go further nor check the queue. |
Willy Tarreau | 21d2af3 | 2008-02-14 20:25:24 +0100 | [diff] [blame] | 961 | */ |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 962 | sess_change_server(s, srv); /* not really needed in fact */ |
Willy Tarreau | 21d2af3 | 2008-02-14 20:25:24 +0100 | [diff] [blame] | 963 | return SRV_STATUS_OK; |
| 964 | } |
| 965 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 966 | /* We might have to queue this stream if the assigned server is full. |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 967 | * We know we have to queue it into the server's queue, so if a maxqueue |
| 968 | * is set on the server, we must also check that the server's queue is |
| 969 | * not full, in which case we have to return FULL. |
| 970 | */ |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 971 | if (srv->maxconn && |
| 972 | (srv->nbpend || srv->served >= srv_dynamic_maxconn(srv))) { |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 973 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 974 | if (srv->maxqueue > 0 && srv->nbpend >= srv->maxqueue) |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 975 | return SRV_STATUS_FULL; |
| 976 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 977 | p = pendconn_add(s); |
| 978 | if (p) |
| 979 | return SRV_STATUS_QUEUED; |
| 980 | else |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 981 | return SRV_STATUS_INTERNAL; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 982 | } |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 983 | |
| 984 | /* OK, we can use this server. Let's reserve our place */ |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 985 | sess_change_server(s, srv); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 986 | return SRV_STATUS_OK; |
| 987 | |
| 988 | case SRV_STATUS_FULL: |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 989 | /* queue this stream into the proxy's queue */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 990 | p = pendconn_add(s); |
| 991 | if (p) |
| 992 | return SRV_STATUS_QUEUED; |
| 993 | else |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 994 | return SRV_STATUS_INTERNAL; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 995 | |
| 996 | case SRV_STATUS_NOSRV: |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 997 | return err; |
| 998 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 999 | case SRV_STATUS_INTERNAL: |
| 1000 | return err; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1001 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1002 | default: |
| 1003 | return SRV_STATUS_INTERNAL; |
| 1004 | } |
Willy Tarreau | 5b6995c | 2008-01-13 16:31:17 +0100 | [diff] [blame] | 1005 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1006 | |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1007 | /* If an explicit source binding is specified on the server and/or backend, and |
| 1008 | * this source makes use of the transparent proxy, then it is extracted now and |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1009 | * assigned to the stream's pending connection. This function assumes that an |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1010 | * outgoing connection has already been assigned to s->si[1].end. |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1011 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1012 | static void assign_tproxy_address(struct stream *s) |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1013 | { |
Willy Tarreau | 29fbe51 | 2015-08-20 19:35:14 +0200 | [diff] [blame] | 1014 | #if defined(CONFIG_HAP_TRANSPARENT) |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 1015 | struct server *srv = objt_server(s->target); |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1016 | struct conn_src *src; |
Willy Tarreau | b363a1f | 2013-10-01 10:45:07 +0200 | [diff] [blame] | 1017 | struct connection *cli_conn; |
Olivier Houchard | 09a0f03 | 2019-01-17 15:59:13 +0100 | [diff] [blame] | 1018 | struct connection *srv_conn; |
| 1019 | |
| 1020 | if (objt_cs(s->si[1].end)) |
| 1021 | srv_conn = cs_conn(__objt_cs(s->si[1].end)); |
| 1022 | else |
| 1023 | srv_conn = objt_conn(s->si[1].end); |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1024 | |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1025 | if (srv && srv->conn_src.opts & CO_SRC_BIND) |
| 1026 | src = &srv->conn_src; |
| 1027 | else if (s->be->conn_src.opts & CO_SRC_BIND) |
| 1028 | src = &s->be->conn_src; |
| 1029 | else |
| 1030 | return; |
Willy Tarreau | 294c473 | 2011-12-16 21:35:50 +0100 | [diff] [blame] | 1031 | |
Willy Tarreau | ca79f59 | 2019-07-17 19:04:47 +0200 | [diff] [blame] | 1032 | if (!sockaddr_alloc(&srv_conn->src)) |
| 1033 | return; |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1034 | |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1035 | switch (src->opts & CO_SRC_TPROXY_MASK) { |
| 1036 | case CO_SRC_TPROXY_ADDR: |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1037 | *srv_conn->src = src->tproxy_addr; |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1038 | break; |
| 1039 | case CO_SRC_TPROXY_CLI: |
| 1040 | case CO_SRC_TPROXY_CIP: |
| 1041 | /* FIXME: what can we do if the client connects in IPv6 or unix socket ? */ |
Willy Tarreau | d0d8da9 | 2015-04-04 02:10:38 +0200 | [diff] [blame] | 1042 | cli_conn = objt_conn(strm_orig(s)); |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 1043 | if (cli_conn && conn_get_src(cli_conn)) |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1044 | *srv_conn->src = *cli_conn->src; |
| 1045 | else { |
Willy Tarreau | 16aa4af | 2019-07-18 11:16:41 +0200 | [diff] [blame] | 1046 | sockaddr_free(&srv_conn->src); |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1047 | } |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1048 | break; |
| 1049 | case CO_SRC_TPROXY_DYN: |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 1050 | if (src->bind_hdr_occ && IS_HTX_STRM(s)) { |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1051 | char *vptr; |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1052 | size_t vlen; |
Willy Tarreau | 294c473 | 2011-12-16 21:35:50 +0100 | [diff] [blame] | 1053 | |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1054 | /* bind to the IP in a header */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1055 | ((struct sockaddr_in *)srv_conn->src)->sin_family = AF_INET; |
| 1056 | ((struct sockaddr_in *)srv_conn->src)->sin_port = 0; |
| 1057 | ((struct sockaddr_in *)srv_conn->src)->sin_addr.s_addr = 0; |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 1058 | if (http_get_htx_hdr(htxbuf(&s->req.buf), |
| 1059 | ist2(src->bind_hdr_name, src->bind_hdr_len), |
| 1060 | src->bind_hdr_occ, NULL, &vptr, &vlen)) { |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1061 | ((struct sockaddr_in *)srv_conn->src)->sin_addr.s_addr = |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 1062 | htonl(inetaddr_host_lim(vptr, vptr + vlen)); |
Willy Tarreau | bce7088 | 2009-09-07 11:51:47 +0200 | [diff] [blame] | 1063 | } |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1064 | } |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1065 | break; |
| 1066 | default: |
Willy Tarreau | 16aa4af | 2019-07-18 11:16:41 +0200 | [diff] [blame] | 1067 | sockaddr_free(&srv_conn->src); |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1068 | } |
| 1069 | #endif |
| 1070 | } |
| 1071 | |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1072 | /* Attempt to get a backend connection from the specified mt_list array |
| 1073 | * (safe or idle connections). |
| 1074 | */ |
| 1075 | static struct connection *conn_backend_get(struct server *srv, int is_safe) |
| 1076 | { |
| 1077 | struct mt_list *mt_list = is_safe ? srv->safe_conns : srv->idle_conns; |
| 1078 | struct connection *conn; |
| 1079 | int i; |
| 1080 | int found = 0; |
| 1081 | |
| 1082 | /* We need to lock even if this is our own list, because another |
| 1083 | * thread may be trying to migrate that connection, and we don't want |
| 1084 | * to end up with two threads using the same connection. |
| 1085 | */ |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 1086 | HA_SPIN_LOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock); |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1087 | conn = MT_LIST_POP(&mt_list[tid], struct connection *, list); |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 1088 | HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock); |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1089 | |
| 1090 | /* If we found a connection in our own list, and we don't have to |
| 1091 | * steal one from another thread, then we're done. |
| 1092 | */ |
Olivier Houchard | fdc7ee2 | 2020-03-19 23:52:28 +0100 | [diff] [blame] | 1093 | if (conn) { |
| 1094 | i = tid; |
| 1095 | goto fix_conn; |
| 1096 | } |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1097 | |
| 1098 | /* Lookup all other threads for an idle connection, starting from tid + 1 */ |
| 1099 | for (i = tid; !found && (i = ((i + 1 == global.nbthread) ? 0 : i + 1)) != tid;) { |
| 1100 | struct mt_list *elt1, elt2; |
| 1101 | |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 1102 | HA_SPIN_LOCK(OTHER_LOCK, &idle_conns[i].toremove_lock); |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1103 | mt_list_for_each_entry_safe(conn, &mt_list[i], list, elt1, elt2) { |
| 1104 | if (conn->mux->takeover && conn->mux->takeover(conn) == 0) { |
| 1105 | MT_LIST_DEL_SAFE(elt1); |
Willy Tarreau | b159132 | 2020-06-29 14:17:59 +0200 | [diff] [blame] | 1106 | _HA_ATOMIC_ADD(&activity[tid].fd_takeover, 1); |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1107 | found = 1; |
| 1108 | break; |
| 1109 | } |
| 1110 | } |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 1111 | HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[i].toremove_lock); |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1112 | } |
| 1113 | |
| 1114 | if (!found) |
| 1115 | conn = NULL; |
| 1116 | else { |
Olivier Houchard | fdc7ee2 | 2020-03-19 23:52:28 +0100 | [diff] [blame] | 1117 | fix_conn: |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1118 | conn->idle_time = 0; |
| 1119 | _HA_ATOMIC_SUB(&srv->curr_idle_conns, 1); |
| 1120 | _HA_ATOMIC_SUB(&srv->curr_idle_thr[i], 1); |
| 1121 | _HA_ATOMIC_SUB(is_safe ? &srv->curr_safe_nb : &srv->curr_idle_nb, 1); |
| 1122 | __ha_barrier_atomic_store(); |
| 1123 | LIST_ADDQ(&srv->available_conns[tid], mt_list_to_list(&conn->list)); |
| 1124 | } |
| 1125 | return conn; |
| 1126 | } |
| 1127 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1128 | /* |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1129 | * This function initiates a connection to the server assigned to this stream |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1130 | * (s->target, s->si[1].addr.to). It will assign a server if none |
Willy Tarreau | 664beb8 | 2011-03-10 11:38:29 +0100 | [diff] [blame] | 1131 | * is assigned yet. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1132 | * It can return one of : |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1133 | * - SF_ERR_NONE if everything's OK |
| 1134 | * - SF_ERR_SRVTO if there are no more servers |
| 1135 | * - SF_ERR_SRVCL if the connection was refused by the server |
| 1136 | * - SF_ERR_PRXCOND if the connection has been limited by the proxy (maxconn) |
| 1137 | * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...) |
| 1138 | * - SF_ERR_INTERNAL for any other purely internal errors |
Tim Düsterhus | 4896c44 | 2016-11-29 02:15:19 +0100 | [diff] [blame] | 1139 | * Additionally, in the case of SF_ERR_RESOURCE, an emergency log will be emitted. |
Willy Tarreau | b363a1f | 2013-10-01 10:45:07 +0200 | [diff] [blame] | 1140 | * The server-facing stream interface is expected to hold a pre-allocated connection |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1141 | * in s->si[1].conn. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1142 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1143 | int connect_server(struct stream *s) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1144 | { |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 1145 | struct connection *cli_conn = objt_conn(strm_orig(s)); |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 1146 | struct connection *srv_conn = NULL; |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 1147 | struct conn_stream *srv_cs = NULL; |
Willy Tarreau | b082186 | 2019-07-18 19:26:11 +0200 | [diff] [blame] | 1148 | struct sess_srv_list *srv_list; |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1149 | struct server *srv; |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1150 | int reuse = 0; |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 1151 | int reuse_orphan = 0; |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1152 | int init_mux = 0; |
Willy Tarreau | 9650f37 | 2009-08-16 14:02:45 +0200 | [diff] [blame] | 1153 | int err; |
Olivier Houchard | 4ba494c | 2020-06-28 16:14:09 +0200 | [diff] [blame] | 1154 | int was_unused = 0; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1155 | |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1156 | |
Willy Tarreau | a5797aa | 2019-07-18 18:40:06 +0200 | [diff] [blame] | 1157 | /* This will catch some corner cases such as lying connections resulting from |
| 1158 | * retries or connect timeouts but will rarely trigger. |
Olivier Houchard | 0fa989f | 2018-12-05 17:08:55 +0100 | [diff] [blame] | 1159 | */ |
Willy Tarreau | a5797aa | 2019-07-18 18:40:06 +0200 | [diff] [blame] | 1160 | si_release_endpoint(&s->si[1]); |
| 1161 | |
Willy Tarreau | b082186 | 2019-07-18 19:26:11 +0200 | [diff] [blame] | 1162 | /* first, search for a matching connection in the session's idle conns */ |
| 1163 | list_for_each_entry(srv_list, &s->sess->srv_list, srv_list) { |
| 1164 | if (srv_list->target == s->target) { |
| 1165 | list_for_each_entry(srv_conn, &srv_list->conn_list, session_list) { |
| 1166 | if (conn_xprt_ready(srv_conn) && |
| 1167 | srv_conn->mux && (srv_conn->mux->avail_streams(srv_conn) > 0)) { |
| 1168 | reuse = 1; |
| 1169 | break; |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 1170 | } |
| 1171 | } |
Willy Tarreau | b082186 | 2019-07-18 19:26:11 +0200 | [diff] [blame] | 1172 | break; |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 1173 | } |
Willy Tarreau | b082186 | 2019-07-18 19:26:11 +0200 | [diff] [blame] | 1174 | } |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1175 | |
Olivier Houchard | 2444aa5 | 2020-01-20 13:56:01 +0100 | [diff] [blame] | 1176 | if (!reuse) |
Willy Tarreau | b082186 | 2019-07-18 19:26:11 +0200 | [diff] [blame] | 1177 | srv_conn = NULL; |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 1178 | |
Willy Tarreau | 7b00492 | 2015-08-04 19:34:21 +0200 | [diff] [blame] | 1179 | srv = objt_server(s->target); |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1180 | |
Willy Tarreau | 8dff998 | 2015-08-04 20:45:52 +0200 | [diff] [blame] | 1181 | if (srv && !reuse) { |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1182 | srv_conn = NULL; |
Willy Tarreau | 8dff998 | 2015-08-04 20:45:52 +0200 | [diff] [blame] | 1183 | |
Olivier Houchard | dc2f275 | 2020-02-13 19:12:07 +0100 | [diff] [blame] | 1184 | /* Below we pick connections from the safe, idle or |
| 1185 | * available (which are safe too) lists based |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1186 | * on the strategy, the fact that this is a first or second |
| 1187 | * (retryable) request, with the indicated priority (1 or 2) : |
| 1188 | * |
| 1189 | * SAFE AGGR ALWS |
| 1190 | * |
| 1191 | * +-----+-----+ +-----+-----+ +-----+-----+ |
| 1192 | * req| 1st | 2nd | req| 1st | 2nd | req| 1st | 2nd | |
| 1193 | * ----+-----+-----+ ----+-----+-----+ ----+-----+-----+ |
| 1194 | * safe| - | 2 | safe| 1 | 2 | safe| 1 | 2 | |
| 1195 | * ----+-----+-----+ ----+-----+-----+ ----+-----+-----+ |
| 1196 | * idle| - | 1 | idle| - | 1 | idle| 2 | 1 | |
| 1197 | * ----+-----+-----+ ----+-----+-----+ ----+-----+-----+ |
Willy Tarreau | b082186 | 2019-07-18 19:26:11 +0200 | [diff] [blame] | 1198 | * |
| 1199 | * Idle conns are necessarily looked up on the same thread so |
| 1200 | * that there is no concurrency issues. |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1201 | */ |
Olivier Houchard | dc2f275 | 2020-02-13 19:12:07 +0100 | [diff] [blame] | 1202 | if (srv->available_conns && !LIST_ISEMPTY(&srv->available_conns[tid]) && |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1203 | ((s->be->options & PR_O_REUSE_MASK) != PR_O_REUSE_NEVR)) { |
Olivier Houchard | dc2f275 | 2020-02-13 19:12:07 +0100 | [diff] [blame] | 1204 | srv_conn = LIST_ELEM(srv->available_conns[tid].n, struct connection *, list); |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1205 | reuse = 1; |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1206 | } |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1207 | else if (!srv_conn && srv->curr_idle_conns > 0) { |
| 1208 | if (srv->idle_conns && |
| 1209 | ((s->be->options & PR_O_REUSE_MASK) != PR_O_REUSE_NEVR && |
| 1210 | s->txn && (s->txn->flags & TX_NOT_FIRST)) && |
| 1211 | srv->curr_idle_nb > 0) { |
| 1212 | srv_conn = conn_backend_get(srv, 0); |
Olivier Houchard | 4ba494c | 2020-06-28 16:14:09 +0200 | [diff] [blame] | 1213 | was_unused = 1; |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1214 | } |
| 1215 | else if (srv->safe_conns && |
| 1216 | ((s->txn && (s->txn->flags & TX_NOT_FIRST)) || |
| 1217 | (s->be->options & PR_O_REUSE_MASK) >= PR_O_REUSE_AGGR) && |
| 1218 | srv->curr_safe_nb > 0) { |
| 1219 | srv_conn = conn_backend_get(srv, 1); |
Olivier Houchard | 4ba494c | 2020-06-28 16:14:09 +0200 | [diff] [blame] | 1220 | was_unused = 1; |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1221 | } |
| 1222 | else if (srv->idle_conns && |
| 1223 | ((s->be->options & PR_O_REUSE_MASK) == PR_O_REUSE_ALWS) && |
| 1224 | srv->curr_idle_nb > 0) { |
| 1225 | srv_conn = conn_backend_get(srv, 0); |
Olivier Houchard | 4ba494c | 2020-06-28 16:14:09 +0200 | [diff] [blame] | 1226 | was_unused = 1; |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1227 | } |
| 1228 | /* If we've picked a connection from the pool, we now have to |
| 1229 | * detach it. We may have to get rid of the previous idle |
| 1230 | * connection we had, so for this we try to swap it with the |
| 1231 | * other owner's. That way it may remain alive for others to |
| 1232 | * pick. |
| 1233 | */ |
| 1234 | if (srv_conn) { |
| 1235 | reuse_orphan = 1; |
| 1236 | reuse = 1; |
| 1237 | srv_conn->flags &= ~CO_FL_LIST_MASK; |
| 1238 | } |
Olivier Houchard | dc2f275 | 2020-02-13 19:12:07 +0100 | [diff] [blame] | 1239 | } |
Willy Tarreau | 8dff998 | 2015-08-04 20:45:52 +0200 | [diff] [blame] | 1240 | } |
| 1241 | |
Willy Tarreau | b082186 | 2019-07-18 19:26:11 +0200 | [diff] [blame] | 1242 | |
| 1243 | /* here reuse might have been set above, indicating srv_conn finally |
| 1244 | * is OK. |
| 1245 | */ |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1246 | if (reuse) { |
| 1247 | /* Disable connection reuse if a dynamic source is used. |
| 1248 | * As long as we don't share connections between servers, |
| 1249 | * we don't need to disable connection reuse on no-idempotent |
| 1250 | * requests nor when PROXY protocol is used. |
| 1251 | */ |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1252 | if (srv && srv->conn_src.opts & CO_SRC_BIND) { |
| 1253 | if ((srv->conn_src.opts & CO_SRC_TPROXY_MASK) == CO_SRC_TPROXY_DYN) |
| 1254 | reuse = 0; |
| 1255 | } |
| 1256 | else if (s->be->conn_src.opts & CO_SRC_BIND) { |
| 1257 | if ((s->be->conn_src.opts & CO_SRC_TPROXY_MASK) == CO_SRC_TPROXY_DYN) |
| 1258 | reuse = 0; |
| 1259 | } |
| 1260 | } |
Willy Tarreau | b082186 | 2019-07-18 19:26:11 +0200 | [diff] [blame] | 1261 | |
Olivier Houchard | b339736 | 2020-03-16 13:49:00 +0100 | [diff] [blame] | 1262 | if (ha_used_fds > global.tune.pool_high_count && srv && srv->idle_conns) { |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 1263 | struct connection *tokill_conn; |
| 1264 | |
| 1265 | /* We can't reuse a connection, and e have more FDs than deemd |
| 1266 | * acceptable, attempt to kill an idling connection |
| 1267 | */ |
| 1268 | /* First, try from our own idle list */ |
Olivier Houchard | dc2f275 | 2020-02-13 19:12:07 +0100 | [diff] [blame] | 1269 | tokill_conn = MT_LIST_POP(&srv->idle_conns[tid], |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 1270 | struct connection *, list); |
| 1271 | if (tokill_conn) |
| 1272 | tokill_conn->mux->destroy(tokill_conn->ctx); |
| 1273 | /* If not, iterate over other thread's idling pool, and try to grab one */ |
| 1274 | else { |
| 1275 | int i; |
| 1276 | |
Willy Tarreau | c35bcfc | 2020-06-29 14:43:16 +0200 | [diff] [blame] | 1277 | for (i = tid; (i = ((i + 1 == global.nbthread) ? 0 : i + 1)) != tid;) { |
Willy Tarreau | 08e2b41 | 2019-05-26 11:50:08 +0200 | [diff] [blame] | 1278 | // just silence stupid gcc which reports an absurd |
| 1279 | // out-of-bounds warning for <i> which is always |
| 1280 | // exactly zero without threads, but it seems to |
| 1281 | // see it possibly larger. |
| 1282 | ALREADY_CHECKED(i); |
| 1283 | |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 1284 | HA_SPIN_LOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock); |
Olivier Houchard | dc2f275 | 2020-02-13 19:12:07 +0100 | [diff] [blame] | 1285 | tokill_conn = MT_LIST_POP(&srv->idle_conns[i], |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 1286 | struct connection *, list); |
Olivier Houchard | dc2f275 | 2020-02-13 19:12:07 +0100 | [diff] [blame] | 1287 | if (!tokill_conn) |
| 1288 | tokill_conn = MT_LIST_POP(&srv->safe_conns[i], |
| 1289 | struct connection *, list); |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 1290 | if (tokill_conn) { |
| 1291 | /* We got one, put it into the concerned thread's to kill list, and wake it's kill task */ |
| 1292 | |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 1293 | MT_LIST_ADDQ(&idle_conns[i].toremove_conns, |
Olivier Houchard | 859dc80 | 2019-08-08 15:47:21 +0200 | [diff] [blame] | 1294 | (struct mt_list *)&tokill_conn->list); |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 1295 | task_wakeup(idle_conns[i].cleanup_task, TASK_WOKEN_OTHER); |
| 1296 | HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock); |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 1297 | break; |
| 1298 | } |
Willy Tarreau | 4d82bf5 | 2020-06-28 00:19:17 +0200 | [diff] [blame] | 1299 | HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock); |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | } |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 1304 | /* If we're really reusing the connection, remove it from the orphan |
| 1305 | * list and add it back to the idle list. |
| 1306 | */ |
Christopher Faulet | 46451d6 | 2019-04-19 15:39:22 +0200 | [diff] [blame] | 1307 | if (reuse) { |
Olivier Houchard | 566df30 | 2020-03-06 18:18:56 +0100 | [diff] [blame] | 1308 | if (!reuse_orphan) { |
Christopher Faulet | 46451d6 | 2019-04-19 15:39:22 +0200 | [diff] [blame] | 1309 | if (srv_conn->flags & CO_FL_SESS_IDLE) { |
| 1310 | struct session *sess = srv_conn->owner; |
Olivier Houchard | a2dbeb2 | 2018-12-28 18:50:57 +0100 | [diff] [blame] | 1311 | |
Christopher Faulet | 46451d6 | 2019-04-19 15:39:22 +0200 | [diff] [blame] | 1312 | srv_conn->flags &= ~CO_FL_SESS_IDLE; |
| 1313 | sess->idle_conns--; |
| 1314 | } |
Olivier Houchard | a2dbeb2 | 2018-12-28 18:50:57 +0100 | [diff] [blame] | 1315 | } |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 1316 | } |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1317 | |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1318 | if (reuse) { |
Willy Tarreau | b082186 | 2019-07-18 19:26:11 +0200 | [diff] [blame] | 1319 | if (srv_conn->mux) { |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1320 | int avail = srv_conn->mux->avail_streams(srv_conn); |
| 1321 | |
| 1322 | if (avail <= 1) { |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 1323 | /* No more streams available, remove it from the list */ |
Olivier Houchard | f0d4dff | 2020-03-06 18:12:03 +0100 | [diff] [blame] | 1324 | MT_LIST_DEL(&srv_conn->list); |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 1325 | } |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1326 | |
| 1327 | if (avail >= 1) { |
| 1328 | srv_cs = srv_conn->mux->attach(srv_conn, s->sess); |
Olivier Houchard | 2444aa5 | 2020-01-20 13:56:01 +0100 | [diff] [blame] | 1329 | if (srv_cs) |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1330 | si_attach_cs(&s->si[1], srv_cs); |
Olivier Houchard | 2444aa5 | 2020-01-20 13:56:01 +0100 | [diff] [blame] | 1331 | else |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1332 | srv_conn = NULL; |
| 1333 | } |
Olivier Houchard | 134a204 | 2018-12-28 14:45:47 +0100 | [diff] [blame] | 1334 | else |
| 1335 | srv_conn = NULL; |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1336 | } |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1337 | /* otherwise srv_conn is left intact */ |
| 1338 | } |
| 1339 | else |
| 1340 | srv_conn = NULL; |
| 1341 | |
| 1342 | /* no reuse or failed to reuse the connection above, pick a new one */ |
| 1343 | if (!srv_conn) { |
| 1344 | srv_conn = conn_new(); |
Olivier Houchard | 4ba494c | 2020-06-28 16:14:09 +0200 | [diff] [blame] | 1345 | was_unused = 1; |
Willy Tarreau | 1da41ec | 2019-02-01 16:38:48 +0100 | [diff] [blame] | 1346 | if (srv_conn) |
| 1347 | srv_conn->target = s->target; |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1348 | srv_cs = NULL; |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1349 | } |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1350 | |
Olivier Houchard | 4ba494c | 2020-06-28 16:14:09 +0200 | [diff] [blame] | 1351 | if (srv_conn && srv && was_unused) { |
Olivier Houchard | cf612a0 | 2020-03-25 19:41:03 +0100 | [diff] [blame] | 1352 | _HA_ATOMIC_ADD(&srv->curr_used_conns, 1); |
| 1353 | /* It's ok not to do that atomically, we don't need an |
| 1354 | * exact max. |
| 1355 | */ |
| 1356 | if (srv->max_used_conns < srv->curr_used_conns) |
| 1357 | srv->max_used_conns = srv->curr_used_conns; |
Willy Tarreau | bdb86bd | 2020-06-29 15:56:35 +0200 | [diff] [blame] | 1358 | |
| 1359 | if (srv->est_need_conns < srv->curr_used_conns) |
| 1360 | srv->est_need_conns = srv->curr_used_conns; |
Olivier Houchard | cf612a0 | 2020-03-25 19:41:03 +0100 | [diff] [blame] | 1361 | } |
Olivier Houchard | c0caac2 | 2020-03-20 14:26:32 +0100 | [diff] [blame] | 1362 | if (!srv_conn || !sockaddr_alloc(&srv_conn->dst)) { |
| 1363 | if (srv_conn) |
| 1364 | conn_free(srv_conn); |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1365 | return SF_ERR_RESOURCE; |
Olivier Houchard | c0caac2 | 2020-03-20 14:26:32 +0100 | [diff] [blame] | 1366 | } |
Willy Tarreau | 32e3c6a | 2013-10-11 19:34:20 +0200 | [diff] [blame] | 1367 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1368 | if (!(s->flags & SF_ADDR_SET)) { |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 1369 | err = assign_server_address(s); |
Olivier Houchard | c0caac2 | 2020-03-20 14:26:32 +0100 | [diff] [blame] | 1370 | if (err != SRV_STATUS_OK) { |
| 1371 | conn_free(srv_conn); |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1372 | return SF_ERR_INTERNAL; |
Olivier Houchard | c0caac2 | 2020-03-20 14:26:32 +0100 | [diff] [blame] | 1373 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1374 | } |
| 1375 | |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 1376 | /* copy the target address into the connection */ |
| 1377 | *srv_conn->dst = *s->target_addr; |
| 1378 | |
| 1379 | /* Copy network namespace from client connection */ |
| 1380 | srv_conn->proxy_netns = cli_conn ? cli_conn->proxy_netns : NULL; |
| 1381 | |
Olivier Houchard | 9a86fcb | 2018-12-11 16:47:14 +0100 | [diff] [blame] | 1382 | if (!conn_xprt_ready(srv_conn) && !srv_conn->mux) { |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1383 | /* set the correct protocol on the output stream interface */ |
Christopher Faulet | 2bf88c0 | 2018-02-28 10:33:34 +0100 | [diff] [blame] | 1384 | if (srv) |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1385 | conn_prepare(srv_conn, protocol_by_family(srv_conn->dst->ss_family), srv->xprt); |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1386 | else if (obj_type(s->target) == OBJ_TYPE_PROXY) { |
| 1387 | /* proxies exclusively run on raw_sock right now */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1388 | conn_prepare(srv_conn, protocol_by_family(srv_conn->dst->ss_family), xprt_get(XPRT_RAW)); |
Olivier Houchard | c0caac2 | 2020-03-20 14:26:32 +0100 | [diff] [blame] | 1389 | if (!(srv_conn->ctrl)) { |
| 1390 | conn_free(srv_conn); |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1391 | return SF_ERR_INTERNAL; |
Olivier Houchard | c0caac2 | 2020-03-20 14:26:32 +0100 | [diff] [blame] | 1392 | } |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1393 | } |
Olivier Houchard | c0caac2 | 2020-03-20 14:26:32 +0100 | [diff] [blame] | 1394 | else { |
| 1395 | conn_free(srv_conn); |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1396 | return SF_ERR_INTERNAL; /* how did we get there ? */ |
Olivier Houchard | c0caac2 | 2020-03-20 14:26:32 +0100 | [diff] [blame] | 1397 | } |
Willy Tarreau | d02394b | 2012-05-11 18:32:18 +0200 | [diff] [blame] | 1398 | |
Olivier Houchard | 8af03b3 | 2020-01-22 17:34:54 +0100 | [diff] [blame] | 1399 | srv_cs = si_alloc_cs(&s->si[1], srv_conn); |
| 1400 | if (!srv_cs) { |
| 1401 | conn_free(srv_conn); |
| 1402 | return SF_ERR_RESOURCE; |
| 1403 | } |
| 1404 | srv_conn->ctx = srv_cs; |
Olivier Houchard | ecffb7d | 2020-01-24 14:10:55 +0100 | [diff] [blame] | 1405 | #if defined(USE_OPENSSL) && defined(TLSEXT_TYPE_application_layer_protocol_negotiation) |
Olivier Houchard | 1295016 | 2018-11-23 14:32:08 +0100 | [diff] [blame] | 1406 | if (!srv || |
| 1407 | ((!(srv->ssl_ctx.alpn_str) && !(srv->ssl_ctx.npn_str)) || |
Olivier Houchard | b4a8b2c | 2019-06-15 00:13:15 +0200 | [diff] [blame] | 1408 | srv->mux_proto || s->be->mode != PR_MODE_HTTP)) |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1409 | #endif |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1410 | init_mux = 1; |
Olivier Houchard | 68ad53c | 2020-05-27 01:26:06 +0200 | [diff] [blame] | 1411 | #if defined(USE_OPENSSL) && defined(TLSEXT_TYPE_application_layer_protocol_negotiation) |
| 1412 | else |
| 1413 | srv_conn->owner = s->sess; |
| 1414 | #endif |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1415 | /* process the case where the server requires the PROXY protocol to be sent */ |
| 1416 | srv_conn->send_proxy_ofs = 0; |
Olivier Houchard | 522eea7 | 2017-11-03 16:27:47 +0100 | [diff] [blame] | 1417 | |
Willy Tarreau | 7b00492 | 2015-08-04 19:34:21 +0200 | [diff] [blame] | 1418 | if (srv && srv->pp_opts) { |
Willy Tarreau | 387ebf8 | 2015-08-04 19:24:13 +0200 | [diff] [blame] | 1419 | srv_conn->flags |= CO_FL_PRIVATE; |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1420 | srv_conn->flags |= CO_FL_SEND_PROXY; |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1421 | srv_conn->send_proxy_ofs = 1; /* must compute size */ |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1422 | if (cli_conn) |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 1423 | conn_get_dst(cli_conn); |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1424 | } |
Willy Tarreau | 2a6e880 | 2013-10-24 15:50:53 +0200 | [diff] [blame] | 1425 | |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1426 | assign_tproxy_address(s); |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1427 | |
| 1428 | if (srv && (srv->flags & SRV_F_SOCKS4_PROXY)) { |
| 1429 | srv_conn->send_proxy_ofs = 1; |
| 1430 | srv_conn->flags |= CO_FL_SOCKS4; |
| 1431 | } |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1432 | } |
Olivier Houchard | 9a86fcb | 2018-12-11 16:47:14 +0100 | [diff] [blame] | 1433 | else if (!conn_xprt_ready(srv_conn)) { |
| 1434 | if (srv_conn->mux->reset) |
| 1435 | srv_conn->mux->reset(srv_conn); |
| 1436 | } |
Olivier Houchard | e8f5f5d | 2019-10-25 17:00:54 +0200 | [diff] [blame] | 1437 | else { |
| 1438 | /* Only consider we're doing reuse if the connection was |
| 1439 | * ready. |
| 1440 | */ |
| 1441 | if (srv_conn->mux->ctl(srv_conn, MUX_STATUS, NULL) & MUX_STATUS_READY) |
| 1442 | s->flags |= SF_SRV_REUSED; |
| 1443 | } |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1444 | |
William Lallemand | b7ff6a3 | 2012-03-02 14:35:21 +0100 | [diff] [blame] | 1445 | /* flag for logging source ip/port */ |
Willy Tarreau | d0d8da9 | 2015-04-04 02:10:38 +0200 | [diff] [blame] | 1446 | if (strm_fe(s)->options2 & PR_O2_SRC_ADDR) |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1447 | s->si[1].flags |= SI_FL_SRC_ADDR; |
William Lallemand | b7ff6a3 | 2012-03-02 14:35:21 +0100 | [diff] [blame] | 1448 | |
Willy Tarreau | 14f8e86 | 2012-08-30 22:23:13 +0200 | [diff] [blame] | 1449 | /* disable lingering */ |
| 1450 | if (s->be->options & PR_O_TCP_NOLING) |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1451 | s->si[1].flags |= SI_FL_NOLINGER; |
Willy Tarreau | 14f8e86 | 2012-08-30 22:23:13 +0200 | [diff] [blame] | 1452 | |
Willy Tarreau | f157384 | 2018-12-14 11:35:36 +0100 | [diff] [blame] | 1453 | if (s->flags & SF_SRV_REUSED) { |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1454 | _HA_ATOMIC_ADD(&s->be->be_counters.reuse, 1); |
Willy Tarreau | cc79ed2 | 2018-12-15 15:11:36 +0100 | [diff] [blame] | 1455 | if (srv) |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1456 | _HA_ATOMIC_ADD(&srv->counters.reuse, 1); |
Willy Tarreau | f157384 | 2018-12-14 11:35:36 +0100 | [diff] [blame] | 1457 | } else { |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1458 | _HA_ATOMIC_ADD(&s->be->be_counters.connect, 1); |
Willy Tarreau | cc79ed2 | 2018-12-15 15:11:36 +0100 | [diff] [blame] | 1459 | if (srv) |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1460 | _HA_ATOMIC_ADD(&srv->counters.connect, 1); |
Willy Tarreau | f157384 | 2018-12-14 11:35:36 +0100 | [diff] [blame] | 1461 | } |
| 1462 | |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1463 | err = si_connect(&s->si[1], srv_conn); |
Willy Tarreau | 09e0203 | 2019-07-18 16:18:20 +0200 | [diff] [blame] | 1464 | if (err != SF_ERR_NONE) |
| 1465 | return err; |
| 1466 | |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1467 | /* We have to defer the mux initialization until after si_connect() |
| 1468 | * has been called, as we need the xprt to have been properly |
| 1469 | * initialized, or any attempt to recv during the mux init may |
| 1470 | * fail, and flag the connection as CO_FL_ERROR. |
| 1471 | */ |
| 1472 | if (init_mux) { |
Olivier Houchard | 7493114 | 2019-01-29 19:11:16 +0100 | [diff] [blame] | 1473 | if (conn_install_mux_be(srv_conn, srv_cs, s->sess) < 0) { |
| 1474 | conn_full_close(srv_conn); |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1475 | return SF_ERR_INTERNAL; |
Olivier Houchard | 7493114 | 2019-01-29 19:11:16 +0100 | [diff] [blame] | 1476 | } |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1477 | /* If we're doing http-reuse always, and the connection |
| 1478 | * is an http2 connection, add it to the available list, |
| 1479 | * so that others can use it right away. |
| 1480 | */ |
| 1481 | if (srv && ((s->be->options & PR_O_REUSE_MASK) == PR_O_REUSE_ALWS) && |
| 1482 | srv_conn->mux->avail_streams(srv_conn) > 0) |
Olivier Houchard | f0d4dff | 2020-03-06 18:12:03 +0100 | [diff] [blame] | 1483 | LIST_ADDQ(&srv->available_conns[tid], mt_list_to_list(&srv_conn->list)); |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1484 | } |
Olivier Houchard | fe50bfb | 2019-05-27 12:09:19 +0200 | [diff] [blame] | 1485 | /* The CO_FL_SEND_PROXY flag may have been set by the connect method, |
| 1486 | * if so, add our handshake pseudo-XPRT now. |
| 1487 | */ |
Willy Tarreau | 4450b58 | 2020-01-23 15:23:13 +0100 | [diff] [blame] | 1488 | if ((srv_conn->flags & CO_FL_HANDSHAKE)) { |
Olivier Houchard | fe50bfb | 2019-05-27 12:09:19 +0200 | [diff] [blame] | 1489 | if (xprt_add_hs(srv_conn) < 0) { |
| 1490 | conn_full_close(srv_conn); |
| 1491 | return SF_ERR_INTERNAL; |
| 1492 | } |
| 1493 | } |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1494 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1495 | |
Willy Tarreau | 5db847a | 2019-05-09 14:13:35 +0200 | [diff] [blame] | 1496 | #if USE_OPENSSL && (defined(OPENSSL_IS_BORINGSSL) || (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)) |
Olivier Houchard | 4cd2af4 | 2019-05-06 15:18:27 +0200 | [diff] [blame] | 1497 | |
Olivier Houchard | 8694e5b | 2019-06-15 00:14:05 +0200 | [diff] [blame] | 1498 | if (!reuse && cli_conn && srv && srv_conn->mux && |
Olivier Houchard | 522eea7 | 2017-11-03 16:27:47 +0100 | [diff] [blame] | 1499 | (srv->ssl_ctx.options & SRV_SSL_O_EARLY_DATA) && |
Olivier Houchard | 865d839 | 2019-05-03 22:46:27 +0200 | [diff] [blame] | 1500 | /* Only attempt to use early data if either the client sent |
| 1501 | * early data, so that we know it can handle a 425, or if |
| 1502 | * we are allwoed to retry requests on early data failure, and |
| 1503 | * it's our first try |
| 1504 | */ |
| 1505 | ((cli_conn->flags & CO_FL_EARLY_DATA) || |
| 1506 | ((s->be->retry_type & PR_RE_EARLY_ERROR) && |
| 1507 | s->si[1].conn_retries == s->be->conn_retries)) && |
| 1508 | !channel_is_empty(si_oc(&s->si[1])) && |
| 1509 | srv_conn->flags & CO_FL_SSL_WAIT_HS) |
Olivier Houchard | 522eea7 | 2017-11-03 16:27:47 +0100 | [diff] [blame] | 1510 | srv_conn->flags &= ~(CO_FL_SSL_WAIT_HS | CO_FL_WAIT_L6_CONN); |
Willy Tarreau | 46c9d3e | 2017-11-08 14:25:59 +0100 | [diff] [blame] | 1511 | #endif |
Olivier Houchard | 522eea7 | 2017-11-03 16:27:47 +0100 | [diff] [blame] | 1512 | |
Willy Tarreau | 14f8e86 | 2012-08-30 22:23:13 +0200 | [diff] [blame] | 1513 | /* set connect timeout */ |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1514 | s->si[1].exp = tick_add_ifset(now_ms, s->be->timeout.connect); |
Willy Tarreau | 14f8e86 | 2012-08-30 22:23:13 +0200 | [diff] [blame] | 1515 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1516 | if (srv) { |
Christopher Faulet | 29f77e8 | 2017-06-08 14:04:45 +0200 | [diff] [blame] | 1517 | int count; |
| 1518 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1519 | s->flags |= SF_CURR_SESS; |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1520 | count = _HA_ATOMIC_ADD(&srv->cur_sess, 1); |
Christopher Faulet | 29f77e8 | 2017-06-08 14:04:45 +0200 | [diff] [blame] | 1521 | HA_ATOMIC_UPDATE_MAX(&srv->counters.cur_sess_max, count); |
Willy Tarreau | 5140623 | 2008-03-10 22:04:20 +0100 | [diff] [blame] | 1522 | if (s->be->lbprm.server_take_conn) |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1523 | s->be->lbprm.server_take_conn(srv); |
Willy Tarreau | 732eac4 | 2015-07-09 11:40:25 +0200 | [diff] [blame] | 1524 | |
| 1525 | #ifdef USE_OPENSSL |
| 1526 | if (srv->ssl_ctx.sni) { |
| 1527 | struct sample *smp; |
Willy Tarreau | 732eac4 | 2015-07-09 11:40:25 +0200 | [diff] [blame] | 1528 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 1529 | smp = sample_fetch_as_type(s->be, s->sess, s, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, |
| 1530 | srv->ssl_ctx.sni, SMP_T_STR); |
Willy Tarreau | 2e0565c | 2016-08-09 11:55:21 +0200 | [diff] [blame] | 1531 | if (smp_make_safe(smp)) { |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1532 | ssl_sock_set_servername(srv_conn, |
| 1533 | smp->data.u.str.area); |
Willy Tarreau | 387ebf8 | 2015-08-04 19:24:13 +0200 | [diff] [blame] | 1534 | srv_conn->flags |= CO_FL_PRIVATE; |
Willy Tarreau | 732eac4 | 2015-07-09 11:40:25 +0200 | [diff] [blame] | 1535 | } |
| 1536 | } |
| 1537 | #endif /* USE_OPENSSL */ |
| 1538 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1539 | } |
| 1540 | |
Willy Tarreau | ada4c58 | 2020-03-04 16:42:03 +0100 | [diff] [blame] | 1541 | /* Now handle synchronously connected sockets. We know the stream-int |
| 1542 | * is at least in state SI_ST_CON. These ones typically are UNIX |
| 1543 | * sockets, socket pairs, and occasionally TCP connections on the |
| 1544 | * loopback on a heavily loaded system. |
| 1545 | */ |
| 1546 | if ((srv_conn->flags & CO_FL_ERROR || srv_cs->flags & CS_FL_ERROR)) |
| 1547 | s->si[1].flags |= SI_FL_ERR; |
| 1548 | |
| 1549 | /* If we had early data, and the handshake ended, then |
| 1550 | * we can remove the flag, and attempt to wake the task up, |
| 1551 | * in the event there's an analyser waiting for the end of |
| 1552 | * the handshake. |
| 1553 | */ |
| 1554 | if (!(srv_conn->flags & (CO_FL_WAIT_XPRT | CO_FL_EARLY_SSL_HS))) |
| 1555 | srv_cs->flags &= ~CS_FL_WAIT_FOR_HS; |
| 1556 | |
| 1557 | if (!si_state_in(s->si[1].state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO) && |
| 1558 | (srv_conn->flags & CO_FL_WAIT_XPRT) == 0) { |
| 1559 | s->si[1].exp = TICK_ETERNITY; |
| 1560 | si_oc(&s->si[1])->flags |= CF_WRITE_NULL; |
| 1561 | if (s->si[1].state == SI_ST_CON) |
| 1562 | s->si[1].state = SI_ST_RDY; |
| 1563 | } |
| 1564 | |
| 1565 | /* Report EOI on the channel if it was reached from the mux point of |
| 1566 | * view. |
| 1567 | * |
| 1568 | * Note: This test is only required because si_cs_process is also the SI |
| 1569 | * wake callback. Otherwise si_cs_recv()/si_cs_send() already take |
| 1570 | * care of it. |
| 1571 | */ |
| 1572 | if ((srv_cs->flags & CS_FL_EOI) && !(si_ic(&s->si[1])->flags & CF_EOI)) |
| 1573 | si_ic(&s->si[1])->flags |= (CF_EOI|CF_READ_PARTIAL); |
| 1574 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1575 | return SF_ERR_NONE; /* connection is OK */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1576 | } |
| 1577 | |
| 1578 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1579 | /* This function performs the "redispatch" part of a connection attempt. It |
| 1580 | * will assign a server if required, queue the connection if required, and |
| 1581 | * handle errors that might arise at this level. It can change the server |
| 1582 | * state. It will return 1 if it encounters an error, switches the server |
| 1583 | * state, or has to queue a connection. Otherwise, it will return 0 indicating |
| 1584 | * that the connection is ready to use. |
| 1585 | */ |
| 1586 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1587 | int srv_redispatch_connect(struct stream *s) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1588 | { |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1589 | struct server *srv; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1590 | int conn_err; |
| 1591 | |
| 1592 | /* We know that we don't have any connection pending, so we will |
| 1593 | * try to get a new one, and wait in this state if it's queued |
| 1594 | */ |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1595 | redispatch: |
Willy Tarreau | f1fd9dc | 2014-04-24 20:47:57 +0200 | [diff] [blame] | 1596 | conn_err = assign_server_and_queue(s); |
| 1597 | srv = objt_server(s->target); |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1598 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1599 | switch (conn_err) { |
| 1600 | case SRV_STATUS_OK: |
| 1601 | break; |
| 1602 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1603 | case SRV_STATUS_FULL: |
| 1604 | /* The server has reached its maxqueue limit. Either PR_O_REDISP is set |
| 1605 | * and we can redispatch to another server, or it is not and we return |
| 1606 | * 503. This only makes sense in DIRECT mode however, because normal LB |
| 1607 | * algorithms would never select such a server, and hash algorithms |
Willy Tarreau | f1fd9dc | 2014-04-24 20:47:57 +0200 | [diff] [blame] | 1608 | * would bring us on the same server again. Note that s->target is set |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1609 | * in this case. |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1610 | */ |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1611 | if (((s->flags & (SF_DIRECT|SF_FORCE_PRST)) == SF_DIRECT) && |
Willy Tarreau | f1fd9dc | 2014-04-24 20:47:57 +0200 | [diff] [blame] | 1612 | (s->be->options & PR_O_REDISP)) { |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1613 | s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET); |
Willy Tarreau | 1c8d32b | 2019-07-18 15:47:45 +0200 | [diff] [blame] | 1614 | sockaddr_free(&s->target_addr); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1615 | goto redispatch; |
| 1616 | } |
| 1617 | |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1618 | if (!s->si[1].err_type) { |
| 1619 | s->si[1].err_type = SI_ET_QUEUE_ERR; |
Willy Tarreau | fa7e102 | 2008-10-19 07:30:41 +0200 | [diff] [blame] | 1620 | } |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1621 | |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1622 | _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1); |
| 1623 | _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1624 | return 1; |
| 1625 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1626 | case SRV_STATUS_NOSRV: |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1627 | /* note: it is guaranteed that srv == NULL here */ |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1628 | if (!s->si[1].err_type) { |
| 1629 | s->si[1].err_type = SI_ET_CONN_ERR; |
Willy Tarreau | fa7e102 | 2008-10-19 07:30:41 +0200 | [diff] [blame] | 1630 | } |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 1631 | |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1632 | _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1633 | return 1; |
| 1634 | |
| 1635 | case SRV_STATUS_QUEUED: |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1636 | s->si[1].exp = tick_add_ifset(now_ms, s->be->timeout.queue); |
| 1637 | s->si[1].state = SI_ST_QUE; |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1638 | /* do nothing else and do not wake any other stream up */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1639 | return 1; |
| 1640 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1641 | case SRV_STATUS_INTERNAL: |
| 1642 | default: |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1643 | if (!s->si[1].err_type) { |
| 1644 | s->si[1].err_type = SI_ET_CONN_OTHER; |
Willy Tarreau | fa7e102 | 2008-10-19 07:30:41 +0200 | [diff] [blame] | 1645 | } |
| 1646 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1647 | if (srv) |
| 1648 | srv_inc_sess_ctr(srv); |
| 1649 | if (srv) |
Bhaskar Maddala | a20cb85 | 2014-02-03 16:26:46 -0500 | [diff] [blame] | 1650 | srv_set_sess_last(srv); |
| 1651 | if (srv) |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1652 | _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1); |
| 1653 | _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1654 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1655 | /* release other streams waiting for this server */ |
Willy Tarreau | f1fd9dc | 2014-04-24 20:47:57 +0200 | [diff] [blame] | 1656 | if (may_dequeue_tasks(srv, s->be)) |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1657 | process_srv_queue(srv); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1658 | return 1; |
| 1659 | } |
| 1660 | /* if we get here, it's because we got SRV_STATUS_OK, which also |
| 1661 | * means that the connection has not been queued. |
| 1662 | */ |
| 1663 | return 0; |
| 1664 | } |
| 1665 | |
Willy Tarreau | 3a9312a | 2020-01-09 18:43:15 +0100 | [diff] [blame] | 1666 | /* Check if the connection request is in such a state that it can be aborted. */ |
| 1667 | static int back_may_abort_req(struct channel *req, struct stream *s) |
| 1668 | { |
| 1669 | return ((req->flags & (CF_READ_ERROR)) || |
| 1670 | ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */ |
| 1671 | (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE)))); |
| 1672 | } |
| 1673 | |
| 1674 | /* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE, |
| 1675 | * SI_ST_TAR. Other input states are simply ignored. |
| 1676 | * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON |
| 1677 | * and SI_ST_EST. Flags must have previously been updated for timeouts and other |
| 1678 | * conditions. |
| 1679 | */ |
| 1680 | void back_try_conn_req(struct stream *s) |
| 1681 | { |
| 1682 | struct server *srv = objt_server(s->target); |
| 1683 | struct stream_interface *si = &s->si[1]; |
| 1684 | struct channel *req = &s->req; |
| 1685 | |
| 1686 | DBG_TRACE_ENTER(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1687 | |
| 1688 | if (si->state == SI_ST_ASS) { |
| 1689 | /* Server assigned to connection request, we have to try to connect now */ |
| 1690 | int conn_err; |
| 1691 | |
| 1692 | /* Before we try to initiate the connection, see if the |
| 1693 | * request may be aborted instead. |
| 1694 | */ |
| 1695 | if (back_may_abort_req(req, s)) { |
| 1696 | si->err_type |= SI_ET_CONN_ABRT; |
| 1697 | DBG_TRACE_STATE("connection aborted", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 1698 | goto abort_connection; |
| 1699 | } |
| 1700 | |
| 1701 | conn_err = connect_server(s); |
| 1702 | srv = objt_server(s->target); |
| 1703 | |
| 1704 | if (conn_err == SF_ERR_NONE) { |
| 1705 | /* state = SI_ST_CON or SI_ST_EST now */ |
| 1706 | if (srv) |
| 1707 | srv_inc_sess_ctr(srv); |
| 1708 | if (srv) |
| 1709 | srv_set_sess_last(srv); |
| 1710 | DBG_TRACE_STATE("connection attempt", STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1711 | goto end; |
| 1712 | } |
| 1713 | |
| 1714 | /* We have received a synchronous error. We might have to |
| 1715 | * abort, retry immediately or redispatch. |
| 1716 | */ |
| 1717 | if (conn_err == SF_ERR_INTERNAL) { |
| 1718 | if (!si->err_type) { |
| 1719 | si->err_type = SI_ET_CONN_OTHER; |
| 1720 | } |
| 1721 | |
| 1722 | if (srv) |
| 1723 | srv_inc_sess_ctr(srv); |
| 1724 | if (srv) |
| 1725 | srv_set_sess_last(srv); |
| 1726 | if (srv) |
| 1727 | _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1); |
| 1728 | _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1); |
| 1729 | |
| 1730 | /* release other streams waiting for this server */ |
| 1731 | sess_change_server(s, NULL); |
| 1732 | if (may_dequeue_tasks(srv, s->be)) |
| 1733 | process_srv_queue(srv); |
| 1734 | |
| 1735 | /* Failed and not retryable. */ |
| 1736 | si_shutr(si); |
| 1737 | si_shutw(si); |
| 1738 | req->flags |= CF_WRITE_ERROR; |
| 1739 | |
| 1740 | s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now); |
| 1741 | |
| 1742 | /* we may need to know the position in the queue for logging */ |
| 1743 | pendconn_cond_unlink(s->pend_pos); |
| 1744 | |
| 1745 | /* no stream was ever accounted for this server */ |
| 1746 | si->state = SI_ST_CLO; |
| 1747 | if (s->srv_error) |
| 1748 | s->srv_error(s, si); |
| 1749 | DBG_TRACE_STATE("internal error during connection", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 1750 | goto end; |
| 1751 | } |
| 1752 | |
| 1753 | /* We are facing a retryable error, but we don't want to run a |
| 1754 | * turn-around now, as the problem is likely a source port |
| 1755 | * allocation problem, so we want to retry now. |
| 1756 | */ |
| 1757 | si->state = SI_ST_CER; |
| 1758 | si->flags &= ~SI_FL_ERR; |
| 1759 | back_handle_st_cer(s); |
| 1760 | |
| 1761 | DBG_TRACE_STATE("connection error, retry", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 1762 | /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */ |
| 1763 | } |
| 1764 | else if (si->state == SI_ST_QUE) { |
| 1765 | /* connection request was queued, check for any update */ |
| 1766 | if (!pendconn_dequeue(s)) { |
| 1767 | /* The connection is not in the queue anymore. Either |
| 1768 | * we have a server connection slot available and we |
| 1769 | * go directly to the assigned state, or we need to |
| 1770 | * load-balance first and go to the INI state. |
| 1771 | */ |
| 1772 | si->exp = TICK_ETERNITY; |
| 1773 | if (unlikely(!(s->flags & SF_ASSIGNED))) |
| 1774 | si->state = SI_ST_REQ; |
| 1775 | else { |
| 1776 | s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now); |
| 1777 | si->state = SI_ST_ASS; |
| 1778 | } |
| 1779 | DBG_TRACE_STATE("dequeue connection request", STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1780 | goto end; |
| 1781 | } |
| 1782 | |
| 1783 | /* Connection request still in queue... */ |
| 1784 | if (si->flags & SI_FL_EXP) { |
| 1785 | /* ... and timeout expired */ |
| 1786 | si->exp = TICK_ETERNITY; |
| 1787 | si->flags &= ~SI_FL_EXP; |
| 1788 | s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now); |
| 1789 | |
| 1790 | /* we may need to know the position in the queue for logging */ |
| 1791 | pendconn_cond_unlink(s->pend_pos); |
| 1792 | |
| 1793 | if (srv) |
| 1794 | _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1); |
| 1795 | _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1); |
| 1796 | si_shutr(si); |
| 1797 | si_shutw(si); |
| 1798 | req->flags |= CF_WRITE_TIMEOUT; |
| 1799 | if (!si->err_type) |
| 1800 | si->err_type = SI_ET_QUEUE_TO; |
| 1801 | si->state = SI_ST_CLO; |
| 1802 | if (s->srv_error) |
| 1803 | s->srv_error(s, si); |
| 1804 | DBG_TRACE_STATE("connection request still queued", STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1805 | goto end; |
| 1806 | } |
| 1807 | |
| 1808 | /* Connection remains in queue, check if we have to abort it */ |
| 1809 | if (back_may_abort_req(req, s)) { |
| 1810 | s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now); |
| 1811 | |
| 1812 | /* we may need to know the position in the queue for logging */ |
| 1813 | pendconn_cond_unlink(s->pend_pos); |
| 1814 | |
| 1815 | si->err_type |= SI_ET_QUEUE_ABRT; |
| 1816 | DBG_TRACE_STATE("abort queued connection request", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 1817 | goto abort_connection; |
| 1818 | } |
| 1819 | |
| 1820 | /* Nothing changed */ |
| 1821 | } |
| 1822 | else if (si->state == SI_ST_TAR) { |
| 1823 | /* Connection request might be aborted */ |
| 1824 | if (back_may_abort_req(req, s)) { |
| 1825 | si->err_type |= SI_ET_CONN_ABRT; |
| 1826 | DBG_TRACE_STATE("connection aborted", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 1827 | goto abort_connection; |
| 1828 | } |
| 1829 | |
| 1830 | if (!(si->flags & SI_FL_EXP)) |
| 1831 | return; /* still in turn-around */ |
| 1832 | |
| 1833 | si->flags &= ~SI_FL_EXP; |
| 1834 | si->exp = TICK_ETERNITY; |
| 1835 | |
| 1836 | /* we keep trying on the same server as long as the stream is |
| 1837 | * marked "assigned". |
| 1838 | * FIXME: Should we force a redispatch attempt when the server is down ? |
| 1839 | */ |
| 1840 | if (s->flags & SF_ASSIGNED) |
| 1841 | si->state = SI_ST_ASS; |
| 1842 | else |
| 1843 | si->state = SI_ST_REQ; |
| 1844 | |
| 1845 | DBG_TRACE_STATE("retry connection now", STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1846 | } |
| 1847 | |
| 1848 | end: |
| 1849 | DBG_TRACE_LEAVE(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1850 | return; |
| 1851 | |
| 1852 | abort_connection: |
| 1853 | /* give up */ |
| 1854 | si->exp = TICK_ETERNITY; |
| 1855 | si->flags &= ~SI_FL_EXP; |
| 1856 | si_shutr(si); |
| 1857 | si_shutw(si); |
| 1858 | si->state = SI_ST_CLO; |
| 1859 | if (s->srv_error) |
| 1860 | s->srv_error(s, si); |
| 1861 | DBG_TRACE_DEVEL("leaving on error", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 1862 | return; |
| 1863 | } |
| 1864 | |
| 1865 | /* This function initiates a server connection request on a stream interface |
| 1866 | * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for |
| 1867 | * a real connection to a server, indicating that a server has been assigned, |
| 1868 | * or SI_ST_EST for a successful connection to an applet. It may also return |
| 1869 | * SI_ST_QUE, or SI_ST_CLO upon error. |
| 1870 | */ |
| 1871 | void back_handle_st_req(struct stream *s) |
| 1872 | { |
| 1873 | struct stream_interface *si = &s->si[1]; |
| 1874 | |
| 1875 | if (si->state != SI_ST_REQ) |
| 1876 | return; |
| 1877 | |
| 1878 | DBG_TRACE_ENTER(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1879 | |
| 1880 | if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) { |
| 1881 | /* the applet directly goes to the EST state */ |
| 1882 | struct appctx *appctx = objt_appctx(si->end); |
| 1883 | |
| 1884 | if (!appctx || appctx->applet != __objt_applet(s->target)) |
| 1885 | appctx = si_register_handler(si, objt_applet(s->target)); |
| 1886 | |
| 1887 | if (!appctx) { |
| 1888 | /* No more memory, let's immediately abort. Force the |
| 1889 | * error code to ignore the ERR_LOCAL which is not a |
| 1890 | * real error. |
| 1891 | */ |
| 1892 | s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK); |
| 1893 | |
| 1894 | si_shutr(si); |
| 1895 | si_shutw(si); |
| 1896 | s->req.flags |= CF_WRITE_ERROR; |
| 1897 | si->err_type = SI_ET_CONN_RES; |
| 1898 | si->state = SI_ST_CLO; |
| 1899 | if (s->srv_error) |
| 1900 | s->srv_error(s, si); |
| 1901 | DBG_TRACE_STATE("failed to register applet", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 1902 | goto end; |
| 1903 | } |
| 1904 | |
| 1905 | if (tv_iszero(&s->logs.tv_request)) |
| 1906 | s->logs.tv_request = now; |
| 1907 | s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now); |
| 1908 | si->state = SI_ST_EST; |
| 1909 | si->err_type = SI_ET_NONE; |
| 1910 | be_set_sess_last(s->be); |
| 1911 | |
| 1912 | DBG_TRACE_STATE("applet registered", STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1913 | /* let back_establish() finish the job */ |
| 1914 | goto end; |
| 1915 | } |
| 1916 | |
| 1917 | /* Try to assign a server */ |
| 1918 | if (srv_redispatch_connect(s) != 0) { |
| 1919 | /* We did not get a server. Either we queued the |
| 1920 | * connection request, or we encountered an error. |
| 1921 | */ |
| 1922 | if (si->state == SI_ST_QUE) { |
| 1923 | DBG_TRACE_STATE("connection request queued", STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1924 | goto end; |
| 1925 | } |
| 1926 | |
| 1927 | /* we did not get any server, let's check the cause */ |
| 1928 | si_shutr(si); |
| 1929 | si_shutw(si); |
| 1930 | s->req.flags |= CF_WRITE_ERROR; |
| 1931 | if (!si->err_type) |
| 1932 | si->err_type = SI_ET_CONN_OTHER; |
| 1933 | si->state = SI_ST_CLO; |
| 1934 | if (s->srv_error) |
| 1935 | s->srv_error(s, si); |
| 1936 | DBG_TRACE_STATE("connection request failed", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 1937 | goto end; |
| 1938 | } |
| 1939 | |
| 1940 | /* The server is assigned */ |
| 1941 | s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now); |
| 1942 | si->state = SI_ST_ASS; |
| 1943 | be_set_sess_last(s->be); |
| 1944 | DBG_TRACE_STATE("connection request assigned to a server", STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1945 | |
| 1946 | end: |
| 1947 | DBG_TRACE_LEAVE(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1948 | } |
| 1949 | |
| 1950 | /* This function is called with (si->state == SI_ST_CON) meaning that a |
| 1951 | * connection was attempted and that the file descriptor is already allocated. |
| 1952 | * We must check for timeout, error and abort. Possible output states are |
| 1953 | * SI_ST_CER (error), SI_ST_DIS (abort), and SI_ST_CON (no change). This only |
| 1954 | * works with connection-based streams. We know that there were no I/O event |
| 1955 | * when reaching this function. Timeouts and errors are *not* cleared. |
| 1956 | */ |
| 1957 | void back_handle_st_con(struct stream *s) |
| 1958 | { |
| 1959 | struct stream_interface *si = &s->si[1]; |
| 1960 | struct channel *req = &s->req; |
| 1961 | struct channel *rep = &s->res; |
Willy Tarreau | 3a9312a | 2020-01-09 18:43:15 +0100 | [diff] [blame] | 1962 | |
| 1963 | DBG_TRACE_ENTER(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1964 | |
| 1965 | /* the client might want to abort */ |
| 1966 | if ((rep->flags & CF_SHUTW) || |
| 1967 | ((req->flags & CF_SHUTW_NOW) && |
| 1968 | (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE)))) { |
| 1969 | si->flags |= SI_FL_NOLINGER; |
| 1970 | si_shutw(si); |
| 1971 | si->err_type |= SI_ET_CONN_ABRT; |
| 1972 | if (s->srv_error) |
| 1973 | s->srv_error(s, si); |
| 1974 | /* Note: state = SI_ST_DIS now */ |
| 1975 | DBG_TRACE_STATE("client abort during connection attempt", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
Willy Tarreau | 062df2c | 2020-01-10 06:17:03 +0100 | [diff] [blame] | 1976 | goto end; |
| 1977 | } |
| 1978 | |
Willy Tarreau | 062df2c | 2020-01-10 06:17:03 +0100 | [diff] [blame] | 1979 | done: |
Willy Tarreau | 3a9312a | 2020-01-09 18:43:15 +0100 | [diff] [blame] | 1980 | /* retryable error ? */ |
Willy Tarreau | 062df2c | 2020-01-10 06:17:03 +0100 | [diff] [blame] | 1981 | if (si->flags & (SI_FL_EXP|SI_FL_ERR)) { |
Willy Tarreau | 3a9312a | 2020-01-09 18:43:15 +0100 | [diff] [blame] | 1982 | if (!si->err_type) { |
| 1983 | if (si->flags & SI_FL_ERR) |
| 1984 | si->err_type = SI_ET_CONN_ERR; |
| 1985 | else |
| 1986 | si->err_type = SI_ET_CONN_TO; |
| 1987 | } |
| 1988 | |
| 1989 | si->state = SI_ST_CER; |
| 1990 | DBG_TRACE_STATE("connection failed, retry", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 1991 | } |
| 1992 | |
Willy Tarreau | 062df2c | 2020-01-10 06:17:03 +0100 | [diff] [blame] | 1993 | end: |
Willy Tarreau | 3a9312a | 2020-01-09 18:43:15 +0100 | [diff] [blame] | 1994 | DBG_TRACE_LEAVE(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 1995 | } |
| 1996 | |
| 1997 | /* This function is called with (si->state == SI_ST_CER) meaning that a |
| 1998 | * previous connection attempt has failed and that the file descriptor |
| 1999 | * has already been released. Possible causes include asynchronous error |
| 2000 | * notification and time out. Possible output states are SI_ST_CLO when |
| 2001 | * retries are exhausted, SI_ST_TAR when a delay is wanted before a new |
| 2002 | * connection attempt, SI_ST_ASS when it's wise to retry on the same server, |
| 2003 | * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are |
| 2004 | * marked as in error state. Timeouts and errors are cleared before retrying. |
| 2005 | */ |
| 2006 | void back_handle_st_cer(struct stream *s) |
| 2007 | { |
| 2008 | struct stream_interface *si = &s->si[1]; |
| 2009 | struct conn_stream *cs = objt_cs(si->end); |
| 2010 | struct connection *conn = cs_conn(cs); |
| 2011 | |
| 2012 | DBG_TRACE_ENTER(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 2013 | |
| 2014 | si->exp = TICK_ETERNITY; |
| 2015 | si->flags &= ~SI_FL_EXP; |
| 2016 | |
| 2017 | /* we probably have to release last stream from the server */ |
| 2018 | if (objt_server(s->target)) { |
| 2019 | health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR); |
| 2020 | |
| 2021 | if (s->flags & SF_CURR_SESS) { |
| 2022 | s->flags &= ~SF_CURR_SESS; |
| 2023 | _HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1); |
| 2024 | } |
| 2025 | |
| 2026 | if ((si->flags & SI_FL_ERR) && |
| 2027 | conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) { |
| 2028 | /* We tried to connect to a server which is configured |
| 2029 | * with "verify required" and which doesn't have the |
| 2030 | * "verifyhost" directive. The server presented a wrong |
| 2031 | * certificate (a certificate for an unexpected name), |
| 2032 | * which implies that we have used SNI in the handshake, |
| 2033 | * and that the server doesn't have the associated cert |
| 2034 | * and presented a default one. |
| 2035 | * |
| 2036 | * This is a serious enough issue not to retry. It's |
| 2037 | * especially important because this wrong name might |
| 2038 | * either be the result of a configuration error, and |
| 2039 | * retrying will only hammer the server, or is caused |
| 2040 | * by the use of a wrong SNI value, most likely |
| 2041 | * provided by the client and we don't want to let the |
| 2042 | * client provoke retries. |
| 2043 | */ |
| 2044 | si->conn_retries = 0; |
| 2045 | DBG_TRACE_DEVEL("Bad SSL cert, disable connection retries", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 2046 | } |
| 2047 | } |
| 2048 | |
| 2049 | /* ensure that we have enough retries left */ |
| 2050 | si->conn_retries--; |
| 2051 | if (si->conn_retries < 0 || !(s->be->retry_type & PR_RE_CONN_FAILED)) { |
| 2052 | if (!si->err_type) { |
| 2053 | si->err_type = SI_ET_CONN_ERR; |
| 2054 | } |
| 2055 | |
| 2056 | if (objt_server(s->target)) |
| 2057 | _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1); |
| 2058 | _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1); |
| 2059 | sess_change_server(s, NULL); |
| 2060 | if (may_dequeue_tasks(objt_server(s->target), s->be)) |
| 2061 | process_srv_queue(objt_server(s->target)); |
| 2062 | |
| 2063 | /* shutw is enough so stop a connecting socket */ |
| 2064 | si_shutw(si); |
| 2065 | s->req.flags |= CF_WRITE_ERROR; |
| 2066 | s->res.flags |= CF_READ_ERROR; |
| 2067 | |
| 2068 | si->state = SI_ST_CLO; |
| 2069 | if (s->srv_error) |
| 2070 | s->srv_error(s, si); |
| 2071 | |
| 2072 | DBG_TRACE_STATE("connection failed", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 2073 | goto end; |
| 2074 | } |
| 2075 | |
| 2076 | stream_choose_redispatch(s); |
| 2077 | |
| 2078 | if (si->flags & SI_FL_ERR) { |
| 2079 | /* The error was an asynchronous connection error, and we will |
| 2080 | * likely have to retry connecting to the same server, most |
| 2081 | * likely leading to the same result. To avoid this, we wait |
| 2082 | * MIN(one second, connect timeout) before retrying. We don't |
| 2083 | * do it when the failure happened on a reused connection |
| 2084 | * though. |
| 2085 | */ |
| 2086 | |
| 2087 | int delay = 1000; |
| 2088 | |
| 2089 | if (s->be->timeout.connect && s->be->timeout.connect < delay) |
| 2090 | delay = s->be->timeout.connect; |
| 2091 | |
| 2092 | if (!si->err_type) |
| 2093 | si->err_type = SI_ET_CONN_ERR; |
| 2094 | |
| 2095 | /* only wait when we're retrying on the same server */ |
| 2096 | if ((si->state == SI_ST_ASS || |
| 2097 | (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR || |
| 2098 | (s->be->srv_act <= 1)) && !(s->flags & SF_SRV_REUSED)) { |
| 2099 | si->state = SI_ST_TAR; |
| 2100 | si->exp = tick_add(now_ms, MS_TO_TICKS(delay)); |
| 2101 | } |
| 2102 | si->flags &= ~SI_FL_ERR; |
| 2103 | DBG_TRACE_STATE("retry a new connection", STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 2104 | } |
| 2105 | |
| 2106 | end: |
| 2107 | DBG_TRACE_LEAVE(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 2108 | } |
| 2109 | |
| 2110 | /* This function is called with (si->state == SI_ST_RDY) meaning that a |
| 2111 | * connection was attempted, that the file descriptor is already allocated, |
| 2112 | * and that it has succeeded. We must still check for errors and aborts. |
| 2113 | * Possible output states are SI_ST_EST (established), SI_ST_CER (error), |
| 2114 | * and SI_ST_DIS (abort). This only works with connection-based streams. |
| 2115 | * Timeouts and errors are *not* cleared. |
| 2116 | */ |
| 2117 | void back_handle_st_rdy(struct stream *s) |
| 2118 | { |
| 2119 | struct stream_interface *si = &s->si[1]; |
| 2120 | struct channel *req = &s->req; |
| 2121 | struct channel *rep = &s->res; |
Willy Tarreau | 3a9312a | 2020-01-09 18:43:15 +0100 | [diff] [blame] | 2122 | |
| 2123 | DBG_TRACE_ENTER(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 2124 | /* We know the connection at least succeeded, though it could have |
| 2125 | * since met an error for any other reason. At least it didn't time out |
| 2126 | * eventhough the timeout might have been reported right after success. |
| 2127 | * We need to take care of various situations here : |
| 2128 | * - everything might be OK. We have to switch to established. |
| 2129 | * - an I/O error might have been reported after a successful transfer, |
| 2130 | * which is not retryable and needs to be logged correctly, and needs |
| 2131 | * established as well |
| 2132 | * - SI_ST_CON implies !CF_WROTE_DATA but not conversely as we could |
| 2133 | * have validated a connection with incoming data (e.g. TCP with a |
| 2134 | * banner protocol), or just a successful connect() probe. |
| 2135 | * - the client might have requested a connection abort, this needs to |
| 2136 | * be checked before we decide to retry anything. |
| 2137 | */ |
| 2138 | |
| 2139 | /* it's still possible to handle client aborts or connection retries |
| 2140 | * before any data were sent. |
| 2141 | */ |
| 2142 | if (!(req->flags & CF_WROTE_DATA)) { |
| 2143 | /* client abort ? */ |
| 2144 | if ((rep->flags & CF_SHUTW) || |
| 2145 | ((req->flags & CF_SHUTW_NOW) && |
| 2146 | (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE)))) { |
| 2147 | /* give up */ |
| 2148 | si->flags |= SI_FL_NOLINGER; |
| 2149 | si_shutw(si); |
| 2150 | si->err_type |= SI_ET_CONN_ABRT; |
| 2151 | if (s->srv_error) |
| 2152 | s->srv_error(s, si); |
| 2153 | DBG_TRACE_STATE("client abort during connection attempt", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 2154 | goto end; |
| 2155 | } |
| 2156 | |
| 2157 | /* retryable error ? */ |
| 2158 | if (si->flags & SI_FL_ERR) { |
Willy Tarreau | 3a9312a | 2020-01-09 18:43:15 +0100 | [diff] [blame] | 2159 | if (!si->err_type) |
| 2160 | si->err_type = SI_ET_CONN_ERR; |
| 2161 | si->state = SI_ST_CER; |
| 2162 | DBG_TRACE_STATE("connection failed, retry", STRM_EV_STRM_PROC|STRM_EV_SI_ST|STRM_EV_STRM_ERR, s); |
| 2163 | goto end; |
| 2164 | } |
| 2165 | } |
| 2166 | |
| 2167 | /* data were sent and/or we had no error, back_establish() will |
| 2168 | * now take over. |
| 2169 | */ |
| 2170 | DBG_TRACE_STATE("connection established", STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 2171 | si->err_type = SI_ET_NONE; |
| 2172 | si->state = SI_ST_EST; |
| 2173 | |
| 2174 | end: |
| 2175 | DBG_TRACE_LEAVE(STRM_EV_STRM_PROC|STRM_EV_SI_ST, s); |
| 2176 | } |
| 2177 | |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 2178 | /* sends a log message when a backend goes down, and also sets last |
| 2179 | * change date. |
| 2180 | */ |
| 2181 | void set_backend_down(struct proxy *be) |
| 2182 | { |
| 2183 | be->last_change = now.tv_sec; |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 2184 | _HA_ATOMIC_ADD(&be->down_trans, 1); |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 2185 | |
Willy Tarreau | 6fb8dc1 | 2016-11-03 19:42:36 +0100 | [diff] [blame] | 2186 | if (!(global.mode & MODE_STARTING)) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2187 | ha_alert("%s '%s' has no server available!\n", proxy_type_str(be), be->id); |
Willy Tarreau | 6fb8dc1 | 2016-11-03 19:42:36 +0100 | [diff] [blame] | 2188 | send_log(be, LOG_EMERG, "%s %s has no server available!\n", proxy_type_str(be), be->id); |
| 2189 | } |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 2190 | } |
| 2191 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 2192 | /* Apply RDP cookie persistence to the current stream. For this, the function |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2193 | * tries to extract an RDP cookie from the request buffer, and look for the |
| 2194 | * matching server in the list. If the server is found, it is assigned to the |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 2195 | * stream. This always returns 1, and the analyser removes itself from the |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2196 | * list. Nothing is performed if a server was already assigned. |
| 2197 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 2198 | int tcp_persist_rdp_cookie(struct stream *s, struct channel *req, int an_bit) |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2199 | { |
| 2200 | struct proxy *px = s->be; |
| 2201 | int ret; |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2202 | struct sample smp; |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2203 | struct server *srv = px->srv; |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 2204 | uint16_t port; |
| 2205 | uint32_t addr; |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2206 | char *p; |
| 2207 | |
Christopher Faulet | eea8fc7 | 2019-11-05 16:18:10 +0100 | [diff] [blame] | 2208 | DBG_TRACE_ENTER(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s); |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2209 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2210 | if (s->flags & SF_ASSIGNED) |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2211 | goto no_cookie; |
| 2212 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2213 | memset(&smp, 0, sizeof(smp)); |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2214 | |
Willy Tarreau | cadd8c9 | 2013-07-22 18:09:52 +0200 | [diff] [blame] | 2215 | ret = fetch_rdp_cookie_name(s, &smp, s->be->rdp_cookie_name, s->be->rdp_cookie_len); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2216 | if (ret == 0 || (smp.flags & SMP_F_MAY_CHANGE) || smp.data.u.str.data == 0) |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2217 | goto no_cookie; |
| 2218 | |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 2219 | /* Considering an rdp cookie detected using acl, str ended with <cr><lf> and should return. |
| 2220 | * The cookie format is <ip> "." <port> where "ip" is the integer corresponding to the |
| 2221 | * server's IP address in network order, and "port" is the integer corresponding to the |
| 2222 | * server's port in network order. Comments please Emeric. |
| 2223 | */ |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2224 | addr = strtoul(smp.data.u.str.area, &p, 10); |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2225 | if (*p != '.') |
| 2226 | goto no_cookie; |
| 2227 | p++; |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 2228 | |
| 2229 | port = ntohs(strtoul(p, &p, 10)); |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2230 | if (*p != '.') |
| 2231 | goto no_cookie; |
| 2232 | |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 2233 | s->target = NULL; |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2234 | while (srv) { |
Willy Tarreau | 28e9d06 | 2014-05-09 22:47:50 +0200 | [diff] [blame] | 2235 | if (srv->addr.ss_family == AF_INET && |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 2236 | port == srv->svc_port && |
| 2237 | addr == ((struct sockaddr_in *)&srv->addr)->sin_addr.s_addr) { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 2238 | if ((srv->cur_state != SRV_ST_STOPPED) || (px->options & PR_O_PERSIST)) { |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2239 | /* we found the server and it is usable */ |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2240 | s->flags |= SF_DIRECT | SF_ASSIGNED; |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 2241 | s->target = &srv->obj_type; |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2242 | break; |
| 2243 | } |
| 2244 | } |
| 2245 | srv = srv->next; |
| 2246 | } |
| 2247 | |
| 2248 | no_cookie: |
| 2249 | req->analysers &= ~an_bit; |
| 2250 | req->analyse_exp = TICK_ETERNITY; |
Christopher Faulet | eea8fc7 | 2019-11-05 16:18:10 +0100 | [diff] [blame] | 2251 | DBG_TRACE_LEAVE(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s); |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 2252 | return 1; |
| 2253 | } |
| 2254 | |
Krzysztof Oledzki | 8513094 | 2007-10-22 16:21:10 +0200 | [diff] [blame] | 2255 | int be_downtime(struct proxy *px) { |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 2256 | if (px->lbprm.tot_weight && px->last_change < now.tv_sec) // ignore negative time |
Krzysztof Oledzki | 8513094 | 2007-10-22 16:21:10 +0200 | [diff] [blame] | 2257 | return px->down_time; |
| 2258 | |
| 2259 | return now.tv_sec - px->last_change + px->down_time; |
| 2260 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2261 | |
Krzysztof Piotr Oledzki | 15514c2 | 2010-01-04 16:03:09 +0100 | [diff] [blame] | 2262 | /* |
| 2263 | * This function returns a string containing the balancing |
| 2264 | * mode of the proxy in a format suitable for stats. |
| 2265 | */ |
| 2266 | |
| 2267 | const char *backend_lb_algo_str(int algo) { |
| 2268 | |
| 2269 | if (algo == BE_LB_ALGO_RR) |
| 2270 | return "roundrobin"; |
| 2271 | else if (algo == BE_LB_ALGO_SRR) |
| 2272 | return "static-rr"; |
Willy Tarreau | f09c660 | 2012-02-13 17:12:08 +0100 | [diff] [blame] | 2273 | else if (algo == BE_LB_ALGO_FAS) |
| 2274 | return "first"; |
Krzysztof Piotr Oledzki | 15514c2 | 2010-01-04 16:03:09 +0100 | [diff] [blame] | 2275 | else if (algo == BE_LB_ALGO_LC) |
| 2276 | return "leastconn"; |
| 2277 | else if (algo == BE_LB_ALGO_SH) |
| 2278 | return "source"; |
| 2279 | else if (algo == BE_LB_ALGO_UH) |
| 2280 | return "uri"; |
| 2281 | else if (algo == BE_LB_ALGO_PH) |
| 2282 | return "url_param"; |
| 2283 | else if (algo == BE_LB_ALGO_HH) |
| 2284 | return "hdr"; |
| 2285 | else if (algo == BE_LB_ALGO_RCH) |
| 2286 | return "rdp-cookie"; |
Willy Tarreau | b3e111b | 2016-11-26 15:52:04 +0100 | [diff] [blame] | 2287 | else if (algo == BE_LB_ALGO_NONE) |
| 2288 | return "none"; |
Krzysztof Piotr Oledzki | 15514c2 | 2010-01-04 16:03:09 +0100 | [diff] [blame] | 2289 | else |
Willy Tarreau | b3e111b | 2016-11-26 15:52:04 +0100 | [diff] [blame] | 2290 | return "unknown"; |
Krzysztof Piotr Oledzki | 15514c2 | 2010-01-04 16:03:09 +0100 | [diff] [blame] | 2291 | } |
| 2292 | |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2293 | /* This function parses a "balance" statement in a backend section describing |
| 2294 | * <curproxy>. It returns -1 if there is any error, otherwise zero. If it |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2295 | * returns -1, it will write an error message into the <err> buffer which will |
| 2296 | * automatically be allocated and must be passed as NULL. The trailing '\n' |
| 2297 | * will not be written. The function must be called with <args> pointing to the |
| 2298 | * first word after "balance". |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2299 | */ |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2300 | int backend_parse_balance(const char **args, char **err, struct proxy *curproxy) |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2301 | { |
| 2302 | if (!*(args[0])) { |
| 2303 | /* if no option is set, use round-robin by default */ |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 2304 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2305 | curproxy->lbprm.algo |= BE_LB_ALGO_RR; |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2306 | return 0; |
| 2307 | } |
| 2308 | |
| 2309 | if (!strcmp(args[0], "roundrobin")) { |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 2310 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2311 | curproxy->lbprm.algo |= BE_LB_ALGO_RR; |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2312 | } |
Willy Tarreau | 9757a38 | 2009-10-03 12:56:50 +0200 | [diff] [blame] | 2313 | else if (!strcmp(args[0], "static-rr")) { |
| 2314 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2315 | curproxy->lbprm.algo |= BE_LB_ALGO_SRR; |
| 2316 | } |
Willy Tarreau | f09c660 | 2012-02-13 17:12:08 +0100 | [diff] [blame] | 2317 | else if (!strcmp(args[0], "first")) { |
| 2318 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2319 | curproxy->lbprm.algo |= BE_LB_ALGO_FAS; |
| 2320 | } |
Willy Tarreau | 5140623 | 2008-03-10 22:04:20 +0100 | [diff] [blame] | 2321 | else if (!strcmp(args[0], "leastconn")) { |
| 2322 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2323 | curproxy->lbprm.algo |= BE_LB_ALGO_LC; |
| 2324 | } |
Willy Tarreau | 21c741a | 2019-01-14 18:14:27 +0100 | [diff] [blame] | 2325 | else if (!strncmp(args[0], "random", 6)) { |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 2326 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2327 | curproxy->lbprm.algo |= BE_LB_ALGO_RND; |
Willy Tarreau | 21c741a | 2019-01-14 18:14:27 +0100 | [diff] [blame] | 2328 | curproxy->lbprm.arg_opt1 = 2; |
| 2329 | |
| 2330 | if (*(args[0] + 6) == '(' && *(args[0] + 7) != ')') { /* number of draws */ |
| 2331 | const char *beg; |
| 2332 | char *end; |
| 2333 | |
| 2334 | beg = args[0] + 7; |
| 2335 | curproxy->lbprm.arg_opt1 = strtol(beg, &end, 0); |
| 2336 | |
| 2337 | if (*end != ')') { |
| 2338 | if (!*end) |
| 2339 | memprintf(err, "random : missing closing parenthesis."); |
| 2340 | else |
| 2341 | memprintf(err, "random : unexpected character '%c' after argument.", *end); |
| 2342 | return -1; |
| 2343 | } |
| 2344 | |
| 2345 | if (curproxy->lbprm.arg_opt1 < 1) { |
| 2346 | memprintf(err, "random : number of draws must be at least 1."); |
| 2347 | return -1; |
| 2348 | } |
| 2349 | } |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 2350 | } |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2351 | else if (!strcmp(args[0], "source")) { |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 2352 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2353 | curproxy->lbprm.algo |= BE_LB_ALGO_SH; |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2354 | } |
| 2355 | else if (!strcmp(args[0], "uri")) { |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 2356 | int arg = 1; |
| 2357 | |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 2358 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2359 | curproxy->lbprm.algo |= BE_LB_ALGO_UH; |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 2360 | curproxy->lbprm.arg_opt1 = 0; // "whole" |
| 2361 | curproxy->lbprm.arg_opt2 = 0; // "len" |
| 2362 | curproxy->lbprm.arg_opt3 = 0; // "depth" |
Oskar Stolc | 8dc4184 | 2012-05-19 10:19:54 +0100 | [diff] [blame] | 2363 | |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 2364 | while (*args[arg]) { |
| 2365 | if (!strcmp(args[arg], "len")) { |
| 2366 | if (!*args[arg+1] || (atoi(args[arg+1]) <= 0)) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2367 | memprintf(err, "%s : '%s' expects a positive integer (got '%s').", args[0], args[arg], args[arg+1]); |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 2368 | return -1; |
| 2369 | } |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 2370 | curproxy->lbprm.arg_opt2 = atoi(args[arg+1]); |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 2371 | arg += 2; |
| 2372 | } |
| 2373 | else if (!strcmp(args[arg], "depth")) { |
| 2374 | if (!*args[arg+1] || (atoi(args[arg+1]) <= 0)) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2375 | memprintf(err, "%s : '%s' expects a positive integer (got '%s').", args[0], args[arg], args[arg+1]); |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 2376 | return -1; |
| 2377 | } |
| 2378 | /* hint: we store the position of the ending '/' (depth+1) so |
| 2379 | * that we avoid a comparison while computing the hash. |
| 2380 | */ |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 2381 | curproxy->lbprm.arg_opt3 = atoi(args[arg+1]) + 1; |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 2382 | arg += 2; |
| 2383 | } |
Oskar Stolc | 8dc4184 | 2012-05-19 10:19:54 +0100 | [diff] [blame] | 2384 | else if (!strcmp(args[arg], "whole")) { |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 2385 | curproxy->lbprm.arg_opt1 = 1; |
Oskar Stolc | 8dc4184 | 2012-05-19 10:19:54 +0100 | [diff] [blame] | 2386 | arg += 1; |
| 2387 | } |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 2388 | else { |
Oskar Stolc | 8dc4184 | 2012-05-19 10:19:54 +0100 | [diff] [blame] | 2389 | memprintf(err, "%s only accepts parameters 'len', 'depth', and 'whole' (got '%s').", args[0], args[arg]); |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 2390 | return -1; |
| 2391 | } |
| 2392 | } |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2393 | } |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 2394 | else if (!strcmp(args[0], "url_param")) { |
| 2395 | if (!*args[1]) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2396 | memprintf(err, "%s requires an URL parameter name.", args[0]); |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 2397 | return -1; |
| 2398 | } |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 2399 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2400 | curproxy->lbprm.algo |= BE_LB_ALGO_PH; |
Willy Tarreau | a534fea | 2008-08-03 12:19:50 +0200 | [diff] [blame] | 2401 | |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 2402 | free(curproxy->lbprm.arg_str); |
| 2403 | curproxy->lbprm.arg_str = strdup(args[1]); |
| 2404 | curproxy->lbprm.arg_len = strlen(args[1]); |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 2405 | if (*args[2]) { |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 2406 | if (strcmp(args[2], "check_post")) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2407 | memprintf(err, "%s only accepts 'check_post' modifier (got '%s').", args[0], args[2]); |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 2408 | return -1; |
| 2409 | } |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 2410 | } |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 2411 | } |
| 2412 | else if (!strncmp(args[0], "hdr(", 4)) { |
| 2413 | const char *beg, *end; |
| 2414 | |
| 2415 | beg = args[0] + 4; |
| 2416 | end = strchr(beg, ')'); |
| 2417 | |
| 2418 | if (!end || end == beg) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2419 | memprintf(err, "hdr requires an http header field name."); |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 2420 | return -1; |
| 2421 | } |
| 2422 | |
| 2423 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2424 | curproxy->lbprm.algo |= BE_LB_ALGO_HH; |
| 2425 | |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 2426 | free(curproxy->lbprm.arg_str); |
| 2427 | curproxy->lbprm.arg_len = end - beg; |
| 2428 | curproxy->lbprm.arg_str = my_strndup(beg, end - beg); |
Willy Tarreau | 9fed858 | 2019-01-14 16:04:54 +0100 | [diff] [blame] | 2429 | curproxy->lbprm.arg_opt1 = 0; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 2430 | |
| 2431 | if (*args[1]) { |
| 2432 | if (strcmp(args[1], "use_domain_only")) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2433 | memprintf(err, "%s only accepts 'use_domain_only' modifier (got '%s').", args[0], args[1]); |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 2434 | return -1; |
| 2435 | } |
Willy Tarreau | 9fed858 | 2019-01-14 16:04:54 +0100 | [diff] [blame] | 2436 | curproxy->lbprm.arg_opt1 = 1; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 2437 | } |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 2438 | } |
| 2439 | else if (!strncmp(args[0], "rdp-cookie", 10)) { |
| 2440 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 2441 | curproxy->lbprm.algo |= BE_LB_ALGO_RCH; |
| 2442 | |
| 2443 | if ( *(args[0] + 10 ) == '(' ) { /* cookie name */ |
| 2444 | const char *beg, *end; |
| 2445 | |
| 2446 | beg = args[0] + 11; |
| 2447 | end = strchr(beg, ')'); |
| 2448 | |
| 2449 | if (!end || end == beg) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2450 | memprintf(err, "rdp-cookie : missing cookie name."); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 2451 | return -1; |
| 2452 | } |
| 2453 | |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 2454 | free(curproxy->lbprm.arg_str); |
| 2455 | curproxy->lbprm.arg_str = my_strndup(beg, end - beg); |
| 2456 | curproxy->lbprm.arg_len = end - beg; |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 2457 | } |
| 2458 | else if ( *(args[0] + 10 ) == '\0' ) { /* default cookie name 'mstshash' */ |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 2459 | free(curproxy->lbprm.arg_str); |
| 2460 | curproxy->lbprm.arg_str = strdup("mstshash"); |
| 2461 | curproxy->lbprm.arg_len = strlen(curproxy->lbprm.arg_str); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 2462 | } |
| 2463 | else { /* syntax */ |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2464 | memprintf(err, "rdp-cookie : missing cookie name."); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 2465 | return -1; |
| 2466 | } |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 2467 | } |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2468 | else { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 2469 | memprintf(err, "only supports 'roundrobin', 'static-rr', 'leastconn', 'source', 'uri', 'url_param', 'hdr(name)' and 'rdp-cookie(name)' options."); |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 2470 | return -1; |
| 2471 | } |
| 2472 | return 0; |
| 2473 | } |
| 2474 | |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2475 | |
| 2476 | /************************************************************************/ |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 2477 | /* All supported sample and ACL keywords must be declared here. */ |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2478 | /************************************************************************/ |
| 2479 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2480 | /* set temp integer to the number of enabled servers on the proxy. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2481 | * Accepts exactly 1 argument. Argument is a backend, other types will lead to |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2482 | * undefined behaviour. |
| 2483 | */ |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2484 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2485 | smp_fetch_nbsrv(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2486 | { |
Thierry FOURNIER | 0a9a2b8 | 2015-05-11 15:20:49 +0200 | [diff] [blame] | 2487 | struct proxy *px; |
| 2488 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2489 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2490 | smp->data.type = SMP_T_SINT; |
Willy Tarreau | 24e32d8 | 2012-04-23 23:55:44 +0200 | [diff] [blame] | 2491 | px = args->data.prx; |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2492 | |
Nenad Merdanovic | 2754fbc | 2017-03-12 21:56:56 +0100 | [diff] [blame] | 2493 | smp->data.u.sint = be_usable_srv(px); |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2494 | |
| 2495 | return 1; |
| 2496 | } |
| 2497 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2498 | /* report in smp->flags a success or failure depending on the designated |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2499 | * server's state. There is no match function involved since there's no pattern. |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2500 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2501 | * undefined behaviour. |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2502 | */ |
| 2503 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2504 | smp_fetch_srv_is_up(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2505 | { |
Willy Tarreau | 24e32d8 | 2012-04-23 23:55:44 +0200 | [diff] [blame] | 2506 | struct server *srv = args->data.srv; |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2507 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2508 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2509 | smp->data.type = SMP_T_BOOL; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 2510 | if (!(srv->cur_admin & SRV_ADMF_MAINT) && |
| 2511 | (!(srv->check.state & CHK_ST_CONFIGURED) || (srv->cur_state != SRV_ST_STOPPED))) |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2512 | smp->data.u.sint = 1; |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2513 | else |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2514 | smp->data.u.sint = 0; |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2515 | return 1; |
| 2516 | } |
| 2517 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2518 | /* set temp integer to the number of enabled servers on the proxy. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2519 | * Accepts exactly 1 argument. Argument is a backend, other types will lead to |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2520 | * undefined behaviour. |
| 2521 | */ |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2522 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2523 | smp_fetch_connslots(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2524 | { |
| 2525 | struct server *iterator; |
Willy Tarreau | d28c353 | 2012-04-19 19:28:33 +0200 | [diff] [blame] | 2526 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2527 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2528 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2529 | smp->data.u.sint = 0; |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2530 | |
Willy Tarreau | 24e32d8 | 2012-04-23 23:55:44 +0200 | [diff] [blame] | 2531 | for (iterator = args->data.prx->srv; iterator; iterator = iterator->next) { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 2532 | if (iterator->cur_state == SRV_ST_STOPPED) |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2533 | continue; |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2534 | |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2535 | if (iterator->maxconn == 0 || iterator->maxqueue == 0) { |
Willy Tarreau | a5e3756 | 2011-12-16 17:06:15 +0100 | [diff] [blame] | 2536 | /* configuration is stupid */ |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2537 | smp->data.u.sint = -1; /* FIXME: stupid value! */ |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2538 | return 1; |
| 2539 | } |
| 2540 | |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2541 | smp->data.u.sint += (iterator->maxconn - iterator->cur_sess) |
Willy Tarreau | 422aa07 | 2012-04-20 20:49:27 +0200 | [diff] [blame] | 2542 | + (iterator->maxqueue - iterator->nbpend); |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2543 | } |
| 2544 | |
| 2545 | return 1; |
| 2546 | } |
| 2547 | |
Willy Tarreau | a5e3756 | 2011-12-16 17:06:15 +0100 | [diff] [blame] | 2548 | /* set temp integer to the id of the backend */ |
Hervé COMMOWICK | 35ed801 | 2010-12-15 14:04:51 +0100 | [diff] [blame] | 2549 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2550 | smp_fetch_be_id(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2551 | { |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2552 | struct proxy *px = NULL; |
| 2553 | |
| 2554 | if (smp->strm) |
| 2555 | px = smp->strm->be; |
Christopher Faulet | f98e626 | 2020-05-06 09:42:04 +0200 | [diff] [blame] | 2556 | else if (obj_type(smp->sess->origin) == OBJ_TYPE_CHECK) |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2557 | px = __objt_check(smp->sess->origin)->proxy; |
| 2558 | if (!px) |
Willy Tarreau | be508f1 | 2016-03-10 11:47:01 +0100 | [diff] [blame] | 2559 | return 0; |
| 2560 | |
Willy Tarreau | f853c46 | 2012-04-23 18:53:56 +0200 | [diff] [blame] | 2561 | smp->flags = SMP_F_VOL_TXN; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2562 | smp->data.type = SMP_T_SINT; |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2563 | smp->data.u.sint = px->uuid; |
Hervé COMMOWICK | 35ed801 | 2010-12-15 14:04:51 +0100 | [diff] [blame] | 2564 | return 1; |
| 2565 | } |
| 2566 | |
Marcin Deranek | d2471c2 | 2016-12-12 14:08:05 +0100 | [diff] [blame] | 2567 | /* set string to the name of the backend */ |
| 2568 | static int |
| 2569 | smp_fetch_be_name(const struct arg *args, struct sample *smp, const char *kw, void *private) |
| 2570 | { |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2571 | struct proxy *px = NULL; |
| 2572 | |
| 2573 | if (smp->strm) |
| 2574 | px = smp->strm->be; |
Christopher Faulet | f98e626 | 2020-05-06 09:42:04 +0200 | [diff] [blame] | 2575 | else if (obj_type(smp->sess->origin) == OBJ_TYPE_CHECK) |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2576 | px = __objt_check(smp->sess->origin)->proxy; |
| 2577 | if (!px) |
Marcin Deranek | d2471c2 | 2016-12-12 14:08:05 +0100 | [diff] [blame] | 2578 | return 0; |
| 2579 | |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2580 | smp->data.u.str.area = (char *)px->id; |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2581 | if (!smp->data.u.str.area) |
Marcin Deranek | d2471c2 | 2016-12-12 14:08:05 +0100 | [diff] [blame] | 2582 | return 0; |
| 2583 | |
| 2584 | smp->data.type = SMP_T_STR; |
| 2585 | smp->flags = SMP_F_CONST; |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2586 | smp->data.u.str.data = strlen(smp->data.u.str.area); |
Marcin Deranek | d2471c2 | 2016-12-12 14:08:05 +0100 | [diff] [blame] | 2587 | |
| 2588 | return 1; |
| 2589 | } |
| 2590 | |
Willy Tarreau | a5e3756 | 2011-12-16 17:06:15 +0100 | [diff] [blame] | 2591 | /* set temp integer to the id of the server */ |
Hervé COMMOWICK | 35ed801 | 2010-12-15 14:04:51 +0100 | [diff] [blame] | 2592 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2593 | smp_fetch_srv_id(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2594 | { |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2595 | struct server *srv = NULL; |
Willy Tarreau | be508f1 | 2016-03-10 11:47:01 +0100 | [diff] [blame] | 2596 | |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2597 | if (smp->strm) |
| 2598 | srv = objt_server(smp->strm->target); |
Christopher Faulet | f98e626 | 2020-05-06 09:42:04 +0200 | [diff] [blame] | 2599 | else if (obj_type(smp->sess->origin) == OBJ_TYPE_CHECK) |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2600 | srv = __objt_check(smp->sess->origin)->server; |
| 2601 | if (!srv) |
Willy Tarreau | 17af419 | 2011-02-23 14:27:06 +0100 | [diff] [blame] | 2602 | return 0; |
| 2603 | |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2604 | smp->data.type = SMP_T_SINT; |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2605 | smp->data.u.sint = srv->puid; |
Hervé COMMOWICK | 35ed801 | 2010-12-15 14:04:51 +0100 | [diff] [blame] | 2606 | |
| 2607 | return 1; |
| 2608 | } |
| 2609 | |
vkill | 1dfd165 | 2019-10-30 16:58:14 +0800 | [diff] [blame] | 2610 | /* set string to the name of the server */ |
| 2611 | static int |
| 2612 | smp_fetch_srv_name(const struct arg *args, struct sample *smp, const char *kw, void *private) |
| 2613 | { |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2614 | struct server *srv = NULL; |
vkill | 1dfd165 | 2019-10-30 16:58:14 +0800 | [diff] [blame] | 2615 | |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2616 | if (smp->strm) |
| 2617 | srv = objt_server(smp->strm->target); |
Christopher Faulet | f98e626 | 2020-05-06 09:42:04 +0200 | [diff] [blame] | 2618 | else if (obj_type(smp->sess->origin) == OBJ_TYPE_CHECK) |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2619 | srv = __objt_check(smp->sess->origin)->server; |
| 2620 | if (!srv) |
vkill | 1dfd165 | 2019-10-30 16:58:14 +0800 | [diff] [blame] | 2621 | return 0; |
| 2622 | |
Christopher Faulet | d1b4464 | 2020-04-30 09:51:15 +0200 | [diff] [blame] | 2623 | smp->data.u.str.area = srv->id; |
vkill | 1dfd165 | 2019-10-30 16:58:14 +0800 | [diff] [blame] | 2624 | if (!smp->data.u.str.area) |
| 2625 | return 0; |
| 2626 | |
| 2627 | smp->data.type = SMP_T_STR; |
| 2628 | smp->data.u.str.data = strlen(smp->data.u.str.area); |
| 2629 | |
| 2630 | return 1; |
| 2631 | } |
| 2632 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2633 | /* set temp integer to the number of connections per second reaching the backend. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2634 | * Accepts exactly 1 argument. Argument is a backend, other types will lead to |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2635 | * undefined behaviour. |
| 2636 | */ |
Willy Tarreau | 079ff0a | 2009-03-05 21:34:28 +0100 | [diff] [blame] | 2637 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2638 | smp_fetch_be_sess_rate(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Willy Tarreau | 079ff0a | 2009-03-05 21:34:28 +0100 | [diff] [blame] | 2639 | { |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2640 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2641 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2642 | smp->data.u.sint = read_freq_ctr(&args->data.prx->be_sess_per_sec); |
Willy Tarreau | 079ff0a | 2009-03-05 21:34:28 +0100 | [diff] [blame] | 2643 | return 1; |
| 2644 | } |
| 2645 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2646 | /* set temp integer to the number of concurrent connections on the backend. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2647 | * Accepts exactly 1 argument. Argument is a backend, other types will lead to |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2648 | * undefined behaviour. |
| 2649 | */ |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2650 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2651 | smp_fetch_be_conn(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2652 | { |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2653 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2654 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2655 | smp->data.u.sint = args->data.prx->beconn; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2656 | return 1; |
| 2657 | } |
| 2658 | |
Patrick Hemmer | 4cdf3ab | 2018-06-14 17:10:27 -0400 | [diff] [blame] | 2659 | /* set temp integer to the number of available connections across available |
| 2660 | * servers on the backend. |
| 2661 | * Accepts exactly 1 argument. Argument is a backend, other types will lead to |
| 2662 | * undefined behaviour. |
| 2663 | */ |
| 2664 | static int |
| 2665 | smp_fetch_be_conn_free(const struct arg *args, struct sample *smp, const char *kw, void *private) |
| 2666 | { |
| 2667 | struct server *iterator; |
| 2668 | struct proxy *px; |
| 2669 | unsigned int maxconn; |
| 2670 | |
| 2671 | smp->flags = SMP_F_VOL_TEST; |
| 2672 | smp->data.type = SMP_T_SINT; |
| 2673 | smp->data.u.sint = 0; |
| 2674 | |
| 2675 | for (iterator = args->data.prx->srv; iterator; iterator = iterator->next) { |
| 2676 | if (iterator->cur_state == SRV_ST_STOPPED) |
| 2677 | continue; |
| 2678 | |
| 2679 | px = iterator->proxy; |
| 2680 | if (!srv_currently_usable(iterator) || |
| 2681 | ((iterator->flags & SRV_F_BACKUP) && |
| 2682 | (px->srv_act || (iterator != px->lbprm.fbck && !(px->options & PR_O_USE_ALL_BK))))) |
| 2683 | continue; |
| 2684 | |
| 2685 | if (iterator->maxconn == 0) { |
| 2686 | /* one active server is unlimited, return -1 */ |
| 2687 | smp->data.u.sint = -1; |
| 2688 | return 1; |
| 2689 | } |
| 2690 | |
| 2691 | maxconn = srv_dynamic_maxconn(iterator); |
| 2692 | if (maxconn > iterator->cur_sess) |
| 2693 | smp->data.u.sint += maxconn - iterator->cur_sess; |
| 2694 | } |
| 2695 | |
| 2696 | return 1; |
| 2697 | } |
| 2698 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2699 | /* set temp integer to the total number of queued connections on the backend. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2700 | * Accepts exactly 1 argument. Argument is a backend, other types will lead to |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2701 | * undefined behaviour. |
| 2702 | */ |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2703 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2704 | smp_fetch_queue_size(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2705 | { |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2706 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2707 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2708 | smp->data.u.sint = args->data.prx->totpend; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2709 | return 1; |
| 2710 | } |
| 2711 | |
Willy Tarreau | a5e3756 | 2011-12-16 17:06:15 +0100 | [diff] [blame] | 2712 | /* set temp integer to the total number of queued connections on the backend divided |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2713 | * by the number of running servers and rounded up. If there is no running |
| 2714 | * server, we return twice the total, just as if we had half a running server. |
| 2715 | * This is more or less correct anyway, since we expect the last server to come |
| 2716 | * back soon. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2717 | * Accepts exactly 1 argument. Argument is a backend, other types will lead to |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2718 | * undefined behaviour. |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2719 | */ |
| 2720 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2721 | smp_fetch_avg_queue_size(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2722 | { |
| 2723 | int nbsrv; |
Thierry FOURNIER | 0a9a2b8 | 2015-05-11 15:20:49 +0200 | [diff] [blame] | 2724 | struct proxy *px; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2725 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2726 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2727 | smp->data.type = SMP_T_SINT; |
Willy Tarreau | 24e32d8 | 2012-04-23 23:55:44 +0200 | [diff] [blame] | 2728 | px = args->data.prx; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2729 | |
Nenad Merdanovic | 2754fbc | 2017-03-12 21:56:56 +0100 | [diff] [blame] | 2730 | nbsrv = be_usable_srv(px); |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2731 | |
| 2732 | if (nbsrv > 0) |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2733 | smp->data.u.sint = (px->totpend + nbsrv - 1) / nbsrv; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2734 | else |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2735 | smp->data.u.sint = px->totpend * 2; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2736 | |
| 2737 | return 1; |
| 2738 | } |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2739 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2740 | /* set temp integer to the number of concurrent connections on the server in the backend. |
| 2741 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2742 | * undefined behaviour. |
| 2743 | */ |
Hervé COMMOWICK | daa824e | 2011-08-05 12:09:44 +0200 | [diff] [blame] | 2744 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2745 | smp_fetch_srv_conn(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Hervé COMMOWICK | daa824e | 2011-08-05 12:09:44 +0200 | [diff] [blame] | 2746 | { |
Willy Tarreau | f853c46 | 2012-04-23 18:53:56 +0200 | [diff] [blame] | 2747 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2748 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2749 | smp->data.u.sint = args->data.srv->cur_sess; |
Hervé COMMOWICK | daa824e | 2011-08-05 12:09:44 +0200 | [diff] [blame] | 2750 | return 1; |
| 2751 | } |
| 2752 | |
Patrick Hemmer | 155e93e | 2018-06-14 18:01:35 -0400 | [diff] [blame] | 2753 | /* set temp integer to the number of available connections on the server in the backend. |
| 2754 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2755 | * undefined behaviour. |
| 2756 | */ |
| 2757 | static int |
| 2758 | smp_fetch_srv_conn_free(const struct arg *args, struct sample *smp, const char *kw, void *private) |
| 2759 | { |
| 2760 | unsigned int maxconn; |
| 2761 | |
| 2762 | smp->flags = SMP_F_VOL_TEST; |
| 2763 | smp->data.type = SMP_T_SINT; |
| 2764 | |
| 2765 | if (args->data.srv->maxconn == 0) { |
| 2766 | /* one active server is unlimited, return -1 */ |
| 2767 | smp->data.u.sint = -1; |
| 2768 | return 1; |
| 2769 | } |
| 2770 | |
| 2771 | maxconn = srv_dynamic_maxconn(args->data.srv); |
| 2772 | if (maxconn > args->data.srv->cur_sess) |
| 2773 | smp->data.u.sint = maxconn - args->data.srv->cur_sess; |
| 2774 | else |
| 2775 | smp->data.u.sint = 0; |
| 2776 | |
| 2777 | return 1; |
| 2778 | } |
| 2779 | |
Willy Tarreau | ff2b7af | 2017-10-13 11:46:26 +0200 | [diff] [blame] | 2780 | /* set temp integer to the number of connections pending in the server's queue. |
| 2781 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2782 | * undefined behaviour. |
| 2783 | */ |
| 2784 | static int |
| 2785 | smp_fetch_srv_queue(const struct arg *args, struct sample *smp, const char *kw, void *private) |
| 2786 | { |
| 2787 | smp->flags = SMP_F_VOL_TEST; |
| 2788 | smp->data.type = SMP_T_SINT; |
| 2789 | smp->data.u.sint = args->data.srv->nbpend; |
| 2790 | return 1; |
| 2791 | } |
| 2792 | |
Tait Clarridge | 7896d52 | 2012-12-05 21:39:31 -0500 | [diff] [blame] | 2793 | /* set temp integer to the number of enabled servers on the proxy. |
| 2794 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2795 | * undefined behaviour. |
| 2796 | */ |
| 2797 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2798 | smp_fetch_srv_sess_rate(const struct arg *args, struct sample *smp, const char *kw, void *private) |
Tait Clarridge | 7896d52 | 2012-12-05 21:39:31 -0500 | [diff] [blame] | 2799 | { |
| 2800 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2801 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2802 | smp->data.u.sint = read_freq_ctr(&args->data.srv->sess_per_sec); |
Tait Clarridge | 7896d52 | 2012-12-05 21:39:31 -0500 | [diff] [blame] | 2803 | return 1; |
| 2804 | } |
| 2805 | |
Nenad Merdanovic | b7e7c47 | 2017-03-12 21:56:55 +0100 | [diff] [blame] | 2806 | static int sample_conv_nbsrv(const struct arg *args, struct sample *smp, void *private) |
| 2807 | { |
| 2808 | |
| 2809 | struct proxy *px; |
| 2810 | |
| 2811 | if (!smp_make_safe(smp)) |
| 2812 | return 0; |
| 2813 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2814 | px = proxy_find_by_name(smp->data.u.str.area, PR_CAP_BE, 0); |
Nenad Merdanovic | b7e7c47 | 2017-03-12 21:56:55 +0100 | [diff] [blame] | 2815 | if (!px) |
| 2816 | return 0; |
| 2817 | |
| 2818 | smp->data.type = SMP_T_SINT; |
| 2819 | smp->data.u.sint = be_usable_srv(px); |
| 2820 | |
| 2821 | return 1; |
| 2822 | } |
| 2823 | |
Nenad Merdanovic | 177adc9 | 2019-08-27 01:58:13 +0200 | [diff] [blame] | 2824 | static int |
| 2825 | sample_conv_srv_queue(const struct arg *args, struct sample *smp, void *private) |
| 2826 | { |
| 2827 | struct proxy *px; |
| 2828 | struct server *srv; |
| 2829 | char *bksep; |
| 2830 | |
| 2831 | if (!smp_make_safe(smp)) |
| 2832 | return 0; |
| 2833 | |
| 2834 | bksep = strchr(smp->data.u.str.area, '/'); |
| 2835 | |
| 2836 | if (bksep) { |
| 2837 | *bksep = '\0'; |
| 2838 | px = proxy_find_by_name(smp->data.u.str.area, PR_CAP_BE, 0); |
| 2839 | if (!px) |
| 2840 | return 0; |
| 2841 | smp->data.u.str.area = bksep + 1; |
| 2842 | } else { |
| 2843 | if (!(smp->px->cap & PR_CAP_BE)) |
| 2844 | return 0; |
| 2845 | px = smp->px; |
| 2846 | } |
| 2847 | |
| 2848 | srv = server_find_by_name(px, smp->data.u.str.area); |
| 2849 | if (!srv) |
| 2850 | return 0; |
| 2851 | |
| 2852 | smp->data.type = SMP_T_SINT; |
| 2853 | smp->data.u.sint = srv->nbpend; |
| 2854 | return 1; |
| 2855 | } |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 2856 | |
| 2857 | /* Note: must not be declared <const> as its list will be overwritten. |
| 2858 | * Please take care of keeping this list alphabetically sorted. |
| 2859 | */ |
Willy Tarreau | dc13c11 | 2013-06-21 23:16:39 +0200 | [diff] [blame] | 2860 | static struct sample_fetch_kw_list smp_kws = {ILH, { |
Thierry FOURNIER | 07ee64e | 2015-07-06 23:43:03 +0200 | [diff] [blame] | 2861 | { "avg_queue", smp_fetch_avg_queue_size, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2862 | { "be_conn", smp_fetch_be_conn, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
Patrick Hemmer | 4cdf3ab | 2018-06-14 17:10:27 -0400 | [diff] [blame] | 2863 | { "be_conn_free", smp_fetch_be_conn_free, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
Thierry FOURNIER | 07ee64e | 2015-07-06 23:43:03 +0200 | [diff] [blame] | 2864 | { "be_id", smp_fetch_be_id, 0, NULL, SMP_T_SINT, SMP_USE_BKEND, }, |
Marcin Deranek | d2471c2 | 2016-12-12 14:08:05 +0100 | [diff] [blame] | 2865 | { "be_name", smp_fetch_be_name, 0, NULL, SMP_T_STR, SMP_USE_BKEND, }, |
Thierry FOURNIER | 07ee64e | 2015-07-06 23:43:03 +0200 | [diff] [blame] | 2866 | { "be_sess_rate", smp_fetch_be_sess_rate, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2867 | { "connslots", smp_fetch_connslots, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2868 | { "nbsrv", smp_fetch_nbsrv, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2869 | { "queue", smp_fetch_queue_size, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2870 | { "srv_conn", smp_fetch_srv_conn, ARG1(1,SRV), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
Patrick Hemmer | 155e93e | 2018-06-14 18:01:35 -0400 | [diff] [blame] | 2871 | { "srv_conn_free", smp_fetch_srv_conn_free, ARG1(1,SRV), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
Thierry FOURNIER | 07ee64e | 2015-07-06 23:43:03 +0200 | [diff] [blame] | 2872 | { "srv_id", smp_fetch_srv_id, 0, NULL, SMP_T_SINT, SMP_USE_SERVR, }, |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 2873 | { "srv_is_up", smp_fetch_srv_is_up, ARG1(1,SRV), NULL, SMP_T_BOOL, SMP_USE_INTRN, }, |
vkill | 1dfd165 | 2019-10-30 16:58:14 +0800 | [diff] [blame] | 2874 | { "srv_name", smp_fetch_srv_name, 0, NULL, SMP_T_STR, SMP_USE_SERVR, }, |
Willy Tarreau | ff2b7af | 2017-10-13 11:46:26 +0200 | [diff] [blame] | 2875 | { "srv_queue", smp_fetch_srv_queue, ARG1(1,SRV), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
Thierry FOURNIER | 07ee64e | 2015-07-06 23:43:03 +0200 | [diff] [blame] | 2876 | { "srv_sess_rate", smp_fetch_srv_sess_rate, ARG1(1,SRV), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 2877 | { /* END */ }, |
| 2878 | }}; |
| 2879 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 2880 | INITCALL1(STG_REGISTER, sample_register_fetches, &smp_kws); |
| 2881 | |
Nenad Merdanovic | b7e7c47 | 2017-03-12 21:56:55 +0100 | [diff] [blame] | 2882 | /* Note: must not be declared <const> as its list will be overwritten */ |
| 2883 | static struct sample_conv_kw_list sample_conv_kws = {ILH, { |
Nenad Merdanovic | 177adc9 | 2019-08-27 01:58:13 +0200 | [diff] [blame] | 2884 | { "nbsrv", sample_conv_nbsrv, 0, NULL, SMP_T_STR, SMP_T_SINT }, |
| 2885 | { "srv_queue", sample_conv_srv_queue, 0, NULL, SMP_T_STR, SMP_T_SINT }, |
Nenad Merdanovic | b7e7c47 | 2017-03-12 21:56:55 +0100 | [diff] [blame] | 2886 | { /* END */ }, |
| 2887 | }}; |
| 2888 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 2889 | INITCALL1(STG_REGISTER, sample_register_convs, &sample_conv_kws); |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 2890 | |
Willy Tarreau | 61612d4 | 2012-04-19 18:42:05 +0200 | [diff] [blame] | 2891 | /* Note: must not be declared <const> as its list will be overwritten. |
| 2892 | * Please take care of keeping this list alphabetically sorted. |
| 2893 | */ |
Willy Tarreau | dc13c11 | 2013-06-21 23:16:39 +0200 | [diff] [blame] | 2894 | static struct acl_kw_list acl_kws = {ILH, { |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 2895 | { /* END */ }, |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2896 | }}; |
| 2897 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 2898 | INITCALL1(STG_REGISTER, acl_register_keywords, &acl_kws); |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2899 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2900 | /* |
| 2901 | * Local variables: |
| 2902 | * c-indent-level: 8 |
| 2903 | * c-basic-offset: 8 |
| 2904 | * End: |
| 2905 | */ |