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 | c7e4238 | 2012-08-24 19:22:53 +0200 | [diff] [blame] | 22 | #include <common/buffer.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 23 | #include <common/compat.h> |
Willy Tarreau | e3ba5f0 | 2006-06-29 18:54:54 +0200 | [diff] [blame] | 24 | #include <common/config.h> |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 25 | #include <common/debug.h> |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 26 | #include <common/hash.h> |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 27 | #include <common/htx.h> |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 28 | #include <common/initcall.h> |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 29 | #include <common/ticks.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 30 | #include <common/time.h> |
KOVACS Krisztian | b3e54fe | 2014-11-17 15:11:45 +0100 | [diff] [blame] | 31 | #include <common/namespace.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 32 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 33 | #include <types/global.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 34 | |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 35 | #include <proto/acl.h> |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 36 | #include <proto/arg.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 37 | #include <proto/backend.h> |
Willy Tarreau | c7e4238 | 2012-08-24 19:22:53 +0200 | [diff] [blame] | 38 | #include <proto/channel.h> |
Willy Tarreau | 03fa5df | 2010-05-24 21:02:37 +0200 | [diff] [blame] | 39 | #include <proto/frontend.h> |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 40 | #include <proto/http_htx.h> |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 41 | #include <proto/lb_chash.h> |
Willy Tarreau | f09c660 | 2012-02-13 17:12:08 +0100 | [diff] [blame] | 42 | #include <proto/lb_fas.h> |
Willy Tarreau | f89c187 | 2009-10-01 11:19:37 +0200 | [diff] [blame] | 43 | #include <proto/lb_fwlc.h> |
| 44 | #include <proto/lb_fwrr.h> |
| 45 | #include <proto/lb_map.h> |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 46 | #include <proto/log.h> |
Willy Tarreau | 53a4766 | 2017-08-28 10:53:00 +0200 | [diff] [blame] | 47 | #include <proto/mux_pt.h> |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 48 | #include <proto/obj_type.h> |
Willy Tarreau | d4c33c8 | 2013-01-07 21:59:07 +0100 | [diff] [blame] | 49 | #include <proto/payload.h> |
Willy Tarreau | d1d5454 | 2012-09-12 22:58:11 +0200 | [diff] [blame] | 50 | #include <proto/protocol.h> |
Christopher Faulet | fc9cfe4 | 2019-07-16 14:54:53 +0200 | [diff] [blame] | 51 | #include <proto/http_ana.h> |
Willy Tarreau | a8f55d5 | 2010-05-31 17:44:19 +0200 | [diff] [blame] | 52 | #include <proto/proto_tcp.h> |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 53 | #include <proto/proxy.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 54 | #include <proto/queue.h> |
Willy Tarreau | d4c33c8 | 2013-01-07 21:59:07 +0100 | [diff] [blame] | 55 | #include <proto/sample.h> |
Willy Tarreau | 7f062c4 | 2009-03-05 18:43:00 +0100 | [diff] [blame] | 56 | #include <proto/server.h> |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 57 | #include <proto/session.h> |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 58 | #include <proto/stream.h> |
Willy Tarreau | 9e000c6 | 2011-03-10 14:03:36 +0100 | [diff] [blame] | 59 | #include <proto/stream_interface.h> |
Willy Tarreau | 732eac4 | 2015-07-09 11:40:25 +0200 | [diff] [blame] | 60 | #include <proto/ssl_sock.h> |
Willy Tarreau | c125cef | 2019-05-10 09:58:43 +0200 | [diff] [blame] | 61 | #include <proto/task.h> |
Willy Tarreau | 732eac4 | 2015-07-09 11:40:25 +0200 | [diff] [blame] | 62 | |
Bhaskar Maddala | a20cb85 | 2014-02-03 16:26:46 -0500 | [diff] [blame] | 63 | int be_lastsession(const struct proxy *be) |
| 64 | { |
| 65 | if (be->be_counters.last_sess) |
| 66 | return now.tv_sec - be->be_counters.last_sess; |
| 67 | |
| 68 | return -1; |
| 69 | } |
| 70 | |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 71 | /* helper function to invoke the correct hash method */ |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 72 | 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] | 73 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 74 | unsigned int hash; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 75 | |
| 76 | switch (px->lbprm.algo & BE_LB_HASH_FUNC) { |
| 77 | case BE_LB_HFCN_DJB2: |
| 78 | hash = hash_djb2(key, len); |
| 79 | break; |
Willy Tarreau | a0f4271 | 2013-11-14 14:30:35 +0100 | [diff] [blame] | 80 | case BE_LB_HFCN_WT6: |
| 81 | hash = hash_wt6(key, len); |
| 82 | break; |
Willy Tarreau | 324f07f | 2015-01-20 19:44:50 +0100 | [diff] [blame] | 83 | case BE_LB_HFCN_CRC32: |
| 84 | hash = hash_crc32(key, len); |
| 85 | break; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 86 | case BE_LB_HFCN_SDBM: |
| 87 | /* this is the default hash function */ |
| 88 | default: |
| 89 | hash = hash_sdbm(key, len); |
| 90 | break; |
| 91 | } |
| 92 | |
| 93 | return hash; |
| 94 | } |
| 95 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 96 | /* |
| 97 | * This function recounts the number of usable active and backup servers for |
| 98 | * 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] | 99 | * This function also recomputes the total active and backup weights. However, |
Willy Tarreau | f4cca45 | 2008-03-08 21:42:54 +0100 | [diff] [blame] | 100 | * 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] | 101 | * this. |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 102 | * This functions is designed to be called before server's weight and state |
| 103 | * commit so it uses 'next' weight and states values. |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 104 | * |
| 105 | * threads: this is the caller responsibility to lock data. For now, this |
| 106 | * function is called from lb modules, so it should be ok. But if you need to |
| 107 | * call it from another place, be careful (and update this comment). |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 108 | */ |
Willy Tarreau | c5d9c80 | 2009-10-01 09:17:05 +0200 | [diff] [blame] | 109 | void recount_servers(struct proxy *px) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 110 | { |
| 111 | struct server *srv; |
| 112 | |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 113 | px->srv_act = px->srv_bck = 0; |
| 114 | px->lbprm.tot_wact = px->lbprm.tot_wbck = 0; |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 115 | px->lbprm.fbck = NULL; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 116 | for (srv = px->srv; srv != NULL; srv = srv->next) { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 117 | if (!srv_willbe_usable(srv)) |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 118 | continue; |
| 119 | |
Willy Tarreau | c93cd16 | 2014-05-13 15:54:22 +0200 | [diff] [blame] | 120 | if (srv->flags & SRV_F_BACKUP) { |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 121 | if (!px->srv_bck && |
Willy Tarreau | f4cca45 | 2008-03-08 21:42:54 +0100 | [diff] [blame] | 122 | !(px->options & PR_O_USE_ALL_BK)) |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 123 | px->lbprm.fbck = srv; |
| 124 | px->srv_bck++; |
Andrew Rodland | 13d5ebb | 2016-10-25 12:49:45 -0400 | [diff] [blame] | 125 | srv->cumulative_weight = px->lbprm.tot_wbck; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 126 | px->lbprm.tot_wbck += srv->next_eweight; |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 127 | } else { |
| 128 | px->srv_act++; |
Andrew Rodland | 13d5ebb | 2016-10-25 12:49:45 -0400 | [diff] [blame] | 129 | srv->cumulative_weight = px->lbprm.tot_wact; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 130 | px->lbprm.tot_wact += srv->next_eweight; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 131 | } |
| 132 | } |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 133 | } |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 134 | |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 135 | /* This function simply updates the backend's tot_weight and tot_used values |
| 136 | * after servers weights have been updated. It is designed to be used after |
| 137 | * recount_servers() or equivalent. |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 138 | * |
| 139 | * threads: this is the caller responsibility to lock data. For now, this |
| 140 | * function is called from lb modules, so it should be ok. But if you need to |
| 141 | * call it from another place, be careful (and update this comment). |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 142 | */ |
Willy Tarreau | c5d9c80 | 2009-10-01 09:17:05 +0200 | [diff] [blame] | 143 | void update_backend_weight(struct proxy *px) |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 144 | { |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 145 | if (px->srv_act) { |
| 146 | px->lbprm.tot_weight = px->lbprm.tot_wact; |
| 147 | px->lbprm.tot_used = px->srv_act; |
| 148 | } |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 149 | else if (px->lbprm.fbck) { |
| 150 | /* use only the first backup server */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 151 | px->lbprm.tot_weight = px->lbprm.fbck->next_eweight; |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 152 | px->lbprm.tot_used = 1; |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 153 | } |
| 154 | else { |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 155 | px->lbprm.tot_weight = px->lbprm.tot_wbck; |
| 156 | px->lbprm.tot_used = px->srv_bck; |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 157 | } |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 158 | } |
| 159 | |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 160 | /* |
| 161 | * This function tries to find a running server for the proxy <px> following |
| 162 | * the source hash method. Depending on the number of active/backup servers, |
| 163 | * it will either look for active servers, or for backup servers. |
| 164 | * If any server is found, it will be returned. If no valid server is found, |
| 165 | * NULL is returned. |
| 166 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 167 | 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] | 168 | { |
| 169 | unsigned int h, l; |
| 170 | |
| 171 | if (px->lbprm.tot_weight == 0) |
| 172 | return NULL; |
| 173 | |
| 174 | l = h = 0; |
| 175 | |
| 176 | /* note: we won't hash if there's only one server left */ |
| 177 | if (px->lbprm.tot_used == 1) |
| 178 | goto hash_done; |
| 179 | |
| 180 | while ((l + sizeof (int)) <= len) { |
| 181 | h ^= ntohl(*(unsigned int *)(&addr[l])); |
| 182 | l += sizeof (int); |
| 183 | } |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 184 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 185 | h = full_hash(h); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 186 | hash_done: |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 187 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 188 | return chash_get_server_hash(px, h, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 189 | else |
| 190 | return map_get_server_hash(px, h); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | /* |
| 194 | * This function tries to find a running server for the proxy <px> following |
| 195 | * the URI hash method. In order to optimize cache hits, the hash computation |
| 196 | * ends at the question mark. Depending on the number of active/backup servers, |
| 197 | * it will either look for active servers, or for backup servers. |
| 198 | * 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] | 199 | * NULL is returned. The lbprm.arg_opt{1,2,3} values correspond respectively to |
| 200 | * the "whole" optional argument (boolean), the "len" argument (numeric) and |
| 201 | * the "depth" argument (numeric). |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 202 | * |
| 203 | * This code was contributed by Guillaume Dallaire, who also selected this hash |
| 204 | * algorithm out of a tens because it gave him the best results. |
| 205 | * |
| 206 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 207 | 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] | 208 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 209 | unsigned int hash = 0; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 210 | int c; |
| 211 | int slashes = 0; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 212 | const char *start, *end; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 213 | |
| 214 | if (px->lbprm.tot_weight == 0) |
| 215 | return NULL; |
| 216 | |
| 217 | /* note: we won't hash if there's only one server left */ |
| 218 | if (px->lbprm.tot_used == 1) |
| 219 | goto hash_done; |
| 220 | |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 221 | if (px->lbprm.arg_opt2) // "len" |
| 222 | uri_len = MIN(uri_len, px->lbprm.arg_opt2); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 223 | |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 224 | start = end = uri; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 225 | while (uri_len--) { |
Willy Tarreau | fad4ffc | 2014-10-17 12:11:50 +0200 | [diff] [blame] | 226 | c = *end; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 227 | if (c == '/') { |
| 228 | slashes++; |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 229 | if (slashes == px->lbprm.arg_opt3) /* depth+1 */ |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 230 | break; |
| 231 | } |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 232 | else if (c == '?' && !px->lbprm.arg_opt1) // "whole" |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 233 | break; |
Willy Tarreau | fad4ffc | 2014-10-17 12:11:50 +0200 | [diff] [blame] | 234 | end++; |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 235 | } |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 236 | |
| 237 | hash = gen_hash(px, start, (end - start)); |
| 238 | |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 239 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 240 | hash = full_hash(hash); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 241 | hash_done: |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 242 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 243 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 244 | else |
| 245 | return map_get_server_hash(px, hash); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 246 | } |
| 247 | |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 248 | /* |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 249 | * This function tries to find a running server for the proxy <px> following |
| 250 | * the URL parameter hash method. It looks for a specific parameter in the |
| 251 | * URL and hashes it to compute the server ID. This is useful to optimize |
| 252 | * performance by avoiding bounces between servers in contexts where sessions |
| 253 | * are shared but cookies are not usable. If the parameter is not found, NULL |
| 254 | * is returned. If any server is found, it will be returned. If no valid server |
| 255 | * is found, NULL is returned. |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 256 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 257 | 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] | 258 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 259 | unsigned int hash = 0; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 260 | const char *start, *end; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 261 | const char *p; |
| 262 | const char *params; |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 263 | int plen; |
| 264 | |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 265 | /* when tot_weight is 0 then so is srv_count */ |
Willy Tarreau | 2069704 | 2007-11-15 23:26:18 +0100 | [diff] [blame] | 266 | if (px->lbprm.tot_weight == 0) |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 267 | return NULL; |
| 268 | |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 269 | if ((p = memchr(uri, '?', uri_len)) == NULL) |
| 270 | return NULL; |
| 271 | |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 272 | p++; |
| 273 | |
| 274 | uri_len -= (p - uri); |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 275 | plen = px->lbprm.arg_len; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 276 | params = p; |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 277 | |
| 278 | while (uri_len > plen) { |
| 279 | /* Look for the parameter name followed by an equal symbol */ |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 280 | if (params[plen] == '=') { |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 281 | if (memcmp(params, px->lbprm.arg_str, plen) == 0) { |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 282 | /* OK, we have the parameter here at <params>, and |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 283 | * the value after the equal sign, at <p> |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 284 | * skip the equal symbol |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 285 | */ |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 286 | p += plen + 1; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 287 | start = end = p; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 288 | uri_len -= plen + 1; |
| 289 | |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 290 | while (uri_len && *end != '&') { |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 291 | uri_len--; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 292 | end++; |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 293 | } |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 294 | hash = gen_hash(px, start, (end - start)); |
| 295 | |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 296 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 297 | hash = full_hash(hash); |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 298 | |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 299 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 300 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 301 | else |
| 302 | return map_get_server_hash(px, hash); |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 303 | } |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 304 | } |
| 305 | /* skip to next parameter */ |
| 306 | p = memchr(params, '&', uri_len); |
| 307 | if (!p) |
| 308 | return NULL; |
| 309 | p++; |
| 310 | uri_len -= (p - params); |
| 311 | params = p; |
| 312 | } |
| 313 | return NULL; |
| 314 | } |
| 315 | |
| 316 | /* |
| 317 | * this does the same as the previous server_ph, but check the body contents |
| 318 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 319 | 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] | 320 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 321 | unsigned int hash = 0; |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 322 | struct channel *req = &s->req; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 323 | struct proxy *px = s->be; |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 324 | struct htx *htx = htxbuf(&req->buf); |
| 325 | struct htx_blk *blk; |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 326 | unsigned int plen = px->lbprm.arg_len; |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 327 | unsigned long len; |
| 328 | const char *params, *p, *start, *end; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 329 | |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 330 | if (px->lbprm.tot_weight == 0) |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 331 | return NULL; |
| 332 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 333 | p = params = NULL; |
| 334 | len = 0; |
| 335 | for (blk = htx_get_first_blk(htx); blk; blk = htx_get_next_blk(htx, blk)) { |
| 336 | enum htx_blk_type type = htx_get_blk_type(blk); |
| 337 | struct ist v; |
Willy Tarreau | f69d4ff | 2015-05-02 00:05:47 +0200 | [diff] [blame] | 338 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 339 | if (type != HTX_BLK_DATA) |
| 340 | continue; |
| 341 | v = htx_get_blk_value(htx, blk); |
| 342 | p = params = v.ptr; |
| 343 | len = v.len; |
| 344 | break; |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 345 | } |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 346 | |
| 347 | while (len > plen) { |
| 348 | /* Look for the parameter name followed by an equal symbol */ |
| 349 | if (params[plen] == '=') { |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 350 | if (memcmp(params, px->lbprm.arg_str, plen) == 0) { |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 351 | /* OK, we have the parameter here at <params>, and |
| 352 | * the value after the equal sign, at <p> |
| 353 | * skip the equal symbol |
| 354 | */ |
| 355 | p += plen + 1; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 356 | start = end = p; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 357 | len -= plen + 1; |
| 358 | |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 359 | while (len && *end != '&') { |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 360 | if (unlikely(!HTTP_IS_TOKEN(*p))) { |
Willy Tarreau | 157dd63 | 2009-12-06 19:18:09 +0100 | [diff] [blame] | 361 | /* 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] | 362 | * Do not interpret any possible binary data as a parameter. |
Willy Tarreau | 157dd63 | 2009-12-06 19:18:09 +0100 | [diff] [blame] | 363 | */ |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 364 | if (likely(HTTP_IS_LWS(*p))) /* eol, uncertain uri len */ |
| 365 | break; |
| 366 | return NULL; /* oh, no; this is not uri-encoded. |
| 367 | * This body does not contain parameters. |
| 368 | */ |
| 369 | } |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 370 | len--; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 371 | end++; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 372 | /* should we break if vlen exceeds limit? */ |
| 373 | } |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 374 | hash = gen_hash(px, start, (end - start)); |
| 375 | |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 376 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 377 | hash = full_hash(hash); |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 378 | |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 379 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 380 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 381 | else |
| 382 | return map_get_server_hash(px, hash); |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 383 | } |
| 384 | } |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 385 | /* skip to next parameter */ |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 386 | p = memchr(params, '&', len); |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 387 | if (!p) |
| 388 | return NULL; |
| 389 | p++; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 390 | len -= (p - params); |
| 391 | params = p; |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 392 | } |
| 393 | return NULL; |
| 394 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 395 | |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 396 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 397 | /* |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 398 | * This function tries to find a running server for the proxy <px> following |
| 399 | * the Header parameter hash method. It looks for a specific parameter in the |
| 400 | * URL and hashes it to compute the server ID. This is useful to optimize |
| 401 | * performance by avoiding bounces between servers in contexts where sessions |
| 402 | * are shared but cookies are not usable. If the parameter is not found, NULL |
| 403 | * 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] | 404 | * is found, NULL is returned. When lbprm.arg_opt1 is set, the hash will only |
| 405 | * apply to the middle part of a domain name ("use_domain_only" option). |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 406 | */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 407 | static struct server *get_server_hh(struct stream *s, const struct server *avoid) |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 408 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 409 | unsigned int hash = 0; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 410 | struct proxy *px = s->be; |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 411 | unsigned int plen = px->lbprm.arg_len; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 412 | unsigned long len; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 413 | const char *p; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 414 | const char *start, *end; |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 415 | struct htx *htx = htxbuf(&s->req.buf); |
| 416 | struct http_hdr_ctx ctx = { .blk = NULL }; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 417 | |
| 418 | /* tot_weight appears to mean srv_count */ |
| 419 | if (px->lbprm.tot_weight == 0) |
| 420 | return NULL; |
| 421 | |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 422 | /* note: we won't hash if there's only one server left */ |
| 423 | if (px->lbprm.tot_used == 1) |
| 424 | goto hash_done; |
| 425 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 426 | http_find_header(htx, ist2(px->lbprm.arg_str, plen), &ctx, 0); |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 427 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 428 | /* if the header is not found or empty, let's fallback to round robin */ |
| 429 | if (!ctx.blk || !ctx.value.len) |
| 430 | return NULL; |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 431 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 432 | /* Found a the param_name in the headers. |
| 433 | * we will compute the hash based on this value ctx.val. |
| 434 | */ |
| 435 | len = ctx.value.len; |
| 436 | p = ctx.value.ptr; |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 437 | |
Willy Tarreau | 9fed858 | 2019-01-14 16:04:54 +0100 | [diff] [blame] | 438 | if (!px->lbprm.arg_opt1) { |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 439 | hash = gen_hash(px, p, len); |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 440 | } else { |
| 441 | int dohash = 0; |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 442 | p += len; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 443 | /* special computation, use only main domain name, not tld/host |
| 444 | * going back from the end of string, start hashing at first |
| 445 | * dot stop at next. |
| 446 | * This is designed to work with the 'Host' header, and requires |
| 447 | * a special option to activate this. |
| 448 | */ |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 449 | end = p; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 450 | while (len) { |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 451 | if (dohash) { |
| 452 | /* Rewind the pointer until the previous char |
| 453 | * is a dot, this will allow to set the start |
| 454 | * position of the domain. */ |
| 455 | if (*(p - 1) == '.') |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 456 | break; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 457 | } |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 458 | else if (*p == '.') { |
| 459 | /* The pointer is rewinded to the dot before the |
| 460 | * tld, we memorize the end of the domain and |
| 461 | * can enter the domain processing. */ |
| 462 | end = p; |
| 463 | dohash = 1; |
| 464 | } |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 465 | p--; |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 466 | len--; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 467 | } |
Cyril Bonté | f607d81 | 2015-01-04 15:17:36 +0100 | [diff] [blame] | 468 | start = p; |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 469 | hash = gen_hash(px, start, (end - start)); |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 470 | } |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 471 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 472 | hash = full_hash(hash); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 473 | hash_done: |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 474 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 475 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 476 | else |
| 477 | return map_get_server_hash(px, hash); |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 478 | } |
| 479 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 480 | /* RDP Cookie HASH. */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 481 | 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] | 482 | { |
Dan Dubovik | bd57a9f | 2014-07-08 08:51:03 -0700 | [diff] [blame] | 483 | unsigned int hash = 0; |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 484 | struct proxy *px = s->be; |
| 485 | unsigned long len; |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 486 | int ret; |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 487 | struct sample smp; |
Willy Tarreau | d1de8af | 2012-05-18 22:12:14 +0200 | [diff] [blame] | 488 | int rewind; |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 489 | |
| 490 | /* tot_weight appears to mean srv_count */ |
| 491 | if (px->lbprm.tot_weight == 0) |
| 492 | return NULL; |
| 493 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 494 | memset(&smp, 0, sizeof(smp)); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 495 | |
Willy Tarreau | 6a445eb | 2018-06-19 07:04:45 +0200 | [diff] [blame] | 496 | rewind = co_data(&s->req); |
| 497 | c_rew(&s->req, rewind); |
Willy Tarreau | d1de8af | 2012-05-18 22:12:14 +0200 | [diff] [blame] | 498 | |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 499 | 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] | 500 | len = smp.data.u.str.data; |
Willy Tarreau | 664092c | 2011-12-16 19:11:42 +0100 | [diff] [blame] | 501 | |
Willy Tarreau | bcbd393 | 2018-06-06 07:13:22 +0200 | [diff] [blame] | 502 | c_adv(&s->req, rewind); |
Willy Tarreau | d1de8af | 2012-05-18 22:12:14 +0200 | [diff] [blame] | 503 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 504 | if (ret == 0 || (smp.flags & SMP_F_MAY_CHANGE) || len == 0) |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 505 | return NULL; |
| 506 | |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 507 | /* note: we won't hash if there's only one server left */ |
| 508 | if (px->lbprm.tot_used == 1) |
| 509 | goto hash_done; |
| 510 | |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 511 | /* Found the param_name in the headers. |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 512 | * we will compute the hash based on this value ctx.val. |
| 513 | */ |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 514 | hash = gen_hash(px, smp.data.u.str.area, len); |
Bhaskar | 98634f0 | 2013-10-29 23:30:51 -0400 | [diff] [blame] | 515 | |
Bhaskar Maddala | b6c0ac9 | 2013-11-05 11:54:02 -0500 | [diff] [blame] | 516 | if ((px->lbprm.algo & BE_LB_HASH_MOD) == BE_LB_HMOD_AVAL) |
Willy Tarreau | 798a39c | 2010-11-24 15:04:29 +0100 | [diff] [blame] | 517 | hash = full_hash(hash); |
Willy Tarreau | 39c9ba7 | 2009-10-01 21:11:15 +0200 | [diff] [blame] | 518 | hash_done: |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 519 | if ((px->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 520 | return chash_get_server_hash(px, hash, avoid); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 521 | else |
| 522 | return map_get_server_hash(px, hash); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 523 | } |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 524 | |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 525 | /* random value */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 526 | 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] | 527 | { |
| 528 | unsigned int hash = 0; |
| 529 | struct proxy *px = s->be; |
Willy Tarreau | 21c741a | 2019-01-14 18:14:27 +0100 | [diff] [blame] | 530 | struct server *prev, *curr; |
| 531 | int draws = px->lbprm.arg_opt1; // number of draws |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 532 | |
| 533 | /* tot_weight appears to mean srv_count */ |
| 534 | if (px->lbprm.tot_weight == 0) |
| 535 | return NULL; |
| 536 | |
Willy Tarreau | 21c741a | 2019-01-14 18:14:27 +0100 | [diff] [blame] | 537 | curr = NULL; |
| 538 | do { |
| 539 | prev = curr; |
| 540 | /* ensure all 32 bits are covered as long as RAND_MAX >= 65535 */ |
| 541 | hash = ((uint64_t)random() * ((uint64_t)RAND_MAX + 1)) ^ random(); |
| 542 | curr = chash_get_server_hash(px, hash, avoid); |
| 543 | if (!curr) |
| 544 | break; |
| 545 | |
| 546 | /* compare the new server to the previous best choice and pick |
| 547 | * the one with the least currently served requests. |
| 548 | */ |
| 549 | if (prev && prev != curr && |
| 550 | curr->served * prev->cur_eweight > prev->served * curr->cur_eweight) |
| 551 | curr = prev; |
| 552 | } while (--draws > 0); |
| 553 | |
| 554 | return curr; |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 555 | } |
| 556 | |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 557 | /* |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 558 | * This function applies the load-balancing algorithm to the stream, as |
| 559 | * 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] | 560 | * 'assigned'. |
| 561 | * |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 562 | * 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] | 563 | * 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] | 564 | * 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] | 565 | * The function tries to keep the original connection slot if it reconnects to |
| 566 | * the same server, otherwise it releases it and tries to offer it. |
| 567 | * |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 568 | * 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] | 569 | * |
| 570 | * It may return : |
Willy Tarreau | 664beb8 | 2011-03-10 11:38:29 +0100 | [diff] [blame] | 571 | * SRV_STATUS_OK if everything is OK. ->srv and ->target are assigned. |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 572 | * SRV_STATUS_NOSRV if no server is available. Stream is not ASSIGNED |
| 573 | * SRV_STATUS_FULL if all servers are saturated. Stream is not ASSIGNED |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 574 | * SRV_STATUS_INTERNAL for other unrecoverable errors. |
| 575 | * |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 576 | * 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] | 577 | * it does not need to be called anymore. This means that target_srv(&s->target) |
| 578 | * can be trusted in balance and direct modes. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 579 | * |
| 580 | */ |
| 581 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 582 | int assign_server(struct stream *s) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 583 | { |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 584 | struct connection *conn = NULL; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 585 | struct server *conn_slot; |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 586 | struct server *srv = NULL, *prev_srv; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 587 | int err; |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 588 | |
Simon Horman | 8effd3d | 2011-08-13 08:03:52 +0900 | [diff] [blame] | 589 | DPRINTF(stderr,"assign_server : s=%p\n",s); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 590 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 591 | err = SRV_STATUS_INTERNAL; |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 592 | if (unlikely(s->pend_pos || s->flags & SF_ASSIGNED)) |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 593 | goto out_err; |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 594 | |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 595 | prev_srv = objt_server(s->target); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 596 | conn_slot = s->srv_conn; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 597 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 598 | /* We have to release any connection slot before applying any LB algo, |
| 599 | * otherwise we may erroneously end up with no available slot. |
| 600 | */ |
| 601 | if (conn_slot) |
| 602 | sess_change_server(s, NULL); |
| 603 | |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 604 | /* We will now try to find the good server and store it into <objt_server(s->target)>. |
| 605 | * 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] | 606 | * as well as if no server is available (check error code). |
| 607 | */ |
Willy Tarreau | 1a20a5d | 2007-11-01 21:08:19 +0100 | [diff] [blame] | 608 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 609 | srv = NULL; |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 610 | s->target = NULL; |
Willy Tarreau | 664beb8 | 2011-03-10 11:38:29 +0100 | [diff] [blame] | 611 | |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 612 | if ((s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_HI && |
Olivier Houchard | 250031e | 2019-05-29 15:01:50 +0200 | [diff] [blame] | 613 | ((s->sess->flags & SESS_FL_PREFER_LAST) || |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 614 | (s->be->options & PR_O_PREF_LAST))) { |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 615 | struct sess_srv_list *srv_list; |
| 616 | list_for_each_entry(srv_list, &s->sess->srv_list, srv_list) { |
| 617 | struct server *tmpsrv = objt_server(srv_list->target); |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 618 | |
| 619 | if (tmpsrv && tmpsrv->proxy == s->be && |
Olivier Houchard | 250031e | 2019-05-29 15:01:50 +0200 | [diff] [blame] | 620 | ((s->sess->flags & SESS_FL_PREFER_LAST) || |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 621 | (!s->be->max_ka_queue || |
| 622 | server_has_room(tmpsrv) || ( |
| 623 | tmpsrv->nbpend + 1 < s->be->max_ka_queue))) && |
| 624 | srv_currently_usable(tmpsrv)) { |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 625 | list_for_each_entry(conn, &srv_list->conn_list, session_list) { |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 626 | if (conn->flags & CO_FL_CONNECTED) { |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 627 | |
Olivier Houchard | ba4fff5 | 2018-12-01 14:40:40 +0100 | [diff] [blame] | 628 | srv = tmpsrv; |
| 629 | s->target = &srv->obj_type; |
| 630 | goto out_ok; |
| 631 | } |
| 632 | } |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 633 | } |
| 634 | } |
Willy Tarreau | 9420b12 | 2013-12-15 18:58:25 +0100 | [diff] [blame] | 635 | } |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 636 | if (s->be->lbprm.algo & BE_LB_KIND) { |
Christopher Faulet | 5b51755 | 2017-06-09 14:17:53 +0200 | [diff] [blame] | 637 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 638 | /* we must check if we have at least one server available */ |
| 639 | if (!s->be->lbprm.tot_weight) { |
| 640 | err = SRV_STATUS_NOSRV; |
| 641 | goto out; |
| 642 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 643 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 644 | /* First check whether we need to fetch some data or simply call |
| 645 | * the LB lookup function. Only the hashing functions will need |
| 646 | * some input data in fact, and will support multiple algorithms. |
| 647 | */ |
| 648 | switch (s->be->lbprm.algo & BE_LB_LKUP) { |
| 649 | case BE_LB_LKUP_RRTREE: |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 650 | srv = fwrr_get_next_server(s->be, prev_srv); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 651 | break; |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 652 | |
Willy Tarreau | f09c660 | 2012-02-13 17:12:08 +0100 | [diff] [blame] | 653 | case BE_LB_LKUP_FSTREE: |
| 654 | srv = fas_get_next_server(s->be, prev_srv); |
| 655 | break; |
| 656 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 657 | case BE_LB_LKUP_LCTREE: |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 658 | srv = fwlc_get_next_server(s->be, prev_srv); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 659 | break; |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 660 | |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 661 | case BE_LB_LKUP_CHTREE: |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 662 | case BE_LB_LKUP_MAP: |
Willy Tarreau | 9757a38 | 2009-10-03 12:56:50 +0200 | [diff] [blame] | 663 | if ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR) { |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 664 | if ((s->be->lbprm.algo & BE_LB_PARM) == BE_LB_RR_RANDOM) |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 665 | srv = get_server_rnd(s, prev_srv); |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 666 | 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] | 667 | srv = chash_get_next_server(s->be, prev_srv); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 668 | else |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 669 | srv = map_get_server_rr(s->be, prev_srv); |
Willy Tarreau | 9757a38 | 2009-10-03 12:56:50 +0200 | [diff] [blame] | 670 | break; |
| 671 | } |
| 672 | 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] | 673 | /* unknown balancing algorithm */ |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 674 | err = SRV_STATUS_INTERNAL; |
| 675 | goto out; |
| 676 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 677 | |
| 678 | switch (s->be->lbprm.algo & BE_LB_PARM) { |
| 679 | case BE_LB_HASH_SRC: |
Willy Tarreau | d0d8da9 | 2015-04-04 02:10:38 +0200 | [diff] [blame] | 680 | conn = objt_conn(strm_orig(s)); |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 681 | if (conn && conn_get_src(conn) && conn->src->ss_family == AF_INET) { |
Willy Tarreau | 5dd7fa1 | 2012-03-31 19:53:37 +0200 | [diff] [blame] | 682 | srv = get_server_sh(s->be, |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 683 | (void *)&((struct sockaddr_in *)conn->src)->sin_addr, |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 684 | 4, prev_srv); |
Willy Tarreau | 5dd7fa1 | 2012-03-31 19:53:37 +0200 | [diff] [blame] | 685 | } |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 686 | 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] | 687 | srv = get_server_sh(s->be, |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 688 | (void *)&((struct sockaddr_in6 *)conn->src)->sin6_addr, |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 689 | 16, prev_srv); |
Willy Tarreau | 5dd7fa1 | 2012-03-31 19:53:37 +0200 | [diff] [blame] | 690 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 691 | else { |
| 692 | /* unknown IP family */ |
| 693 | err = SRV_STATUS_INTERNAL; |
| 694 | goto out; |
| 695 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 696 | break; |
| 697 | |
| 698 | case BE_LB_HASH_URI: |
| 699 | /* URI hashing */ |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 700 | 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] | 701 | struct ist uri; |
| 702 | |
Christopher Faulet | 297fbb4 | 2019-05-13 14:41:27 +0200 | [diff] [blame] | 703 | uri = htx_sl_req_uri(http_get_stline(htxbuf(&s->req.buf))); |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 704 | srv = get_server_uh(s->be, uri.ptr, uri.len, prev_srv); |
| 705 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 706 | break; |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 707 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 708 | case BE_LB_HASH_PRM: |
| 709 | /* URL Parameter hashing */ |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 710 | 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] | 711 | struct ist uri; |
| 712 | |
Christopher Faulet | 297fbb4 | 2019-05-13 14:41:27 +0200 | [diff] [blame] | 713 | uri = htx_sl_req_uri(http_get_stline(htxbuf(&s->req.buf))); |
Christopher Faulet | f7679ad | 2019-02-04 12:02:18 +0100 | [diff] [blame] | 714 | srv = get_server_ph(s->be, uri.ptr, uri.len, prev_srv); |
Willy Tarreau | 61a21a3 | 2011-03-01 20:35:49 +0100 | [diff] [blame] | 715 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 716 | if (!srv && s->txn->meth == HTTP_METH_POST) |
| 717 | srv = get_server_ph_post(s, prev_srv); |
| 718 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 719 | break; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 720 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 721 | case BE_LB_HASH_HDR: |
| 722 | /* Header Parameter hashing */ |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 723 | if (IS_HTX_STRM(s) && s->txn->req.msg_state >= HTTP_MSG_BODY) |
| 724 | srv = get_server_hh(s, prev_srv); |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 725 | break; |
| 726 | |
| 727 | case BE_LB_HASH_RDP: |
| 728 | /* RDP Cookie hashing */ |
Willy Tarreau | 59884a6 | 2019-01-02 14:48:31 +0100 | [diff] [blame] | 729 | srv = get_server_rch(s, prev_srv); |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 730 | break; |
| 731 | |
| 732 | default: |
| 733 | /* unknown balancing algorithm */ |
| 734 | err = SRV_STATUS_INTERNAL; |
| 735 | goto out; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 736 | } |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 737 | |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 738 | /* If the hashing parameter was not found, let's fall |
| 739 | * back to round robin on the map. |
| 740 | */ |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 741 | if (!srv) { |
Willy Tarreau | 6c30be5 | 2019-01-14 17:07:39 +0100 | [diff] [blame] | 742 | if ((s->be->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_CHTREE) |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 743 | srv = chash_get_next_server(s->be, prev_srv); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 744 | else |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 745 | srv = map_get_server_rr(s->be, prev_srv); |
Willy Tarreau | 6b2e11b | 2009-10-01 07:52:15 +0200 | [diff] [blame] | 746 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 747 | |
| 748 | /* end of map-based LB */ |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 749 | break; |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 750 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 751 | default: |
| 752 | /* unknown balancing algorithm */ |
| 753 | err = SRV_STATUS_INTERNAL; |
| 754 | goto out; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 755 | } |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 756 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 757 | if (!srv) { |
Willy Tarreau | da76f4f | 2009-10-03 12:36:05 +0200 | [diff] [blame] | 758 | err = SRV_STATUS_FULL; |
| 759 | goto out; |
| 760 | } |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 761 | else if (srv != prev_srv) { |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 762 | _HA_ATOMIC_ADD(&s->be->be_counters.cum_lbconn, 1); |
| 763 | _HA_ATOMIC_ADD(&srv->counters.cum_lbconn, 1); |
Alexandre Cassen | 5eb1a90 | 2007-11-29 15:43:32 +0100 | [diff] [blame] | 764 | } |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 765 | s->target = &srv->obj_type; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 766 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 767 | else if (s->be->options & (PR_O_DISPATCH | PR_O_TRANSP)) { |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 768 | s->target = &s->be->obj_type; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 769 | } |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 770 | else if ((s->be->options & PR_O_HTTP_PROXY)) { |
| 771 | conn = cs_conn(objt_cs(s->si[1].end)); |
| 772 | |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 773 | if (conn && conn->dst && is_addr(conn->dst)) { |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 774 | /* in proxy mode, we need a valid destination address */ |
| 775 | s->target = &s->be->obj_type; |
| 776 | } else { |
| 777 | err = SRV_STATUS_NOSRV; |
| 778 | goto out; |
| 779 | } |
Willy Tarreau | 664beb8 | 2011-03-10 11:38:29 +0100 | [diff] [blame] | 780 | } |
| 781 | else { |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 782 | err = SRV_STATUS_NOSRV; |
| 783 | goto out; |
| 784 | } |
| 785 | |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 786 | out_ok: |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 787 | s->flags |= SF_ASSIGNED; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 788 | err = SRV_STATUS_OK; |
| 789 | out: |
| 790 | |
| 791 | /* Either we take back our connection slot, or we offer it to someone |
| 792 | * else if we don't need it anymore. |
| 793 | */ |
| 794 | if (conn_slot) { |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 795 | if (conn_slot == srv) { |
| 796 | sess_change_server(s, srv); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 797 | } else { |
| 798 | if (may_dequeue_tasks(conn_slot, s->be)) |
| 799 | process_srv_queue(conn_slot); |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | out_err: |
| 804 | return err; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 805 | } |
| 806 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 807 | /* |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 808 | * 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] | 809 | * The address is taken from the currently assigned server, or from the |
| 810 | * dispatch or transparent address. |
| 811 | * |
| 812 | * It may return : |
| 813 | * SRV_STATUS_OK if everything is OK. |
| 814 | * SRV_STATUS_INTERNAL for other unrecoverable errors. |
| 815 | * |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 816 | * 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] | 817 | * not cleared, so it's to the caller to clear it if required. |
| 818 | * |
Willy Tarreau | 32e3c6a | 2013-10-11 19:34:20 +0200 | [diff] [blame] | 819 | * The caller is responsible for having already assigned a connection |
| 820 | * to si->end. |
Willy Tarreau | b363a1f | 2013-10-01 10:45:07 +0200 | [diff] [blame] | 821 | * |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 822 | */ |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 823 | int assign_server_address(struct stream *s, struct connection *srv_conn) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 824 | { |
Willy Tarreau | d0d8da9 | 2015-04-04 02:10:38 +0200 | [diff] [blame] | 825 | struct connection *cli_conn = objt_conn(strm_orig(s)); |
Willy Tarreau | b363a1f | 2013-10-01 10:45:07 +0200 | [diff] [blame] | 826 | |
Christopher Faulet | 56803b1 | 2017-11-24 16:06:18 +0100 | [diff] [blame] | 827 | DPRINTF(stderr,"assign_server_address : s=%p\n",s); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 828 | |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 829 | /* FIXME WTA: an address allocation will soon be needed here */ |
| 830 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 831 | if ((s->flags & SF_DIRECT) || (s->be->lbprm.algo & BE_LB_KIND)) { |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 832 | /* A server is necessarily known for this stream */ |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 833 | if (!(s->flags & SF_ASSIGNED)) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 834 | return SRV_STATUS_INTERNAL; |
| 835 | |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 836 | *srv_conn->dst = __objt_server(s->target)->addr; |
| 837 | set_host_port(srv_conn->dst, __objt_server(s->target)->svc_port); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 838 | |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 839 | if (!is_addr(srv_conn->dst) && cli_conn) { |
Willy Tarreau | d669a4f | 2010-07-13 14:49:50 +0200 | [diff] [blame] | 840 | /* if the server has no address, we use the same address |
| 841 | * the client asked, which is handy for remapping ports |
Willy Tarreau | 9cf8d3f | 2014-05-09 22:56:10 +0200 | [diff] [blame] | 842 | * locally on multiple addresses at once. Nothing is done |
| 843 | * for AF_UNIX addresses. |
Willy Tarreau | d669a4f | 2010-07-13 14:49:50 +0200 | [diff] [blame] | 844 | */ |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 845 | if (!conn_get_dst(cli_conn)) { |
| 846 | /* do nothing if we can't retrieve the address */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 847 | } else if (cli_conn->dst->ss_family == AF_INET) { |
| 848 | ((struct sockaddr_in *)srv_conn->dst)->sin_addr = ((struct sockaddr_in *)cli_conn->dst)->sin_addr; |
| 849 | } else if (cli_conn->dst->ss_family == AF_INET6) { |
| 850 | ((struct sockaddr_in6 *)srv_conn->dst)->sin6_addr = ((struct sockaddr_in6 *)cli_conn->dst)->sin6_addr; |
Emeric Brun | ec810d1 | 2010-10-22 16:36:33 +0200 | [diff] [blame] | 851 | } |
Willy Tarreau | d669a4f | 2010-07-13 14:49:50 +0200 | [diff] [blame] | 852 | } |
| 853 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 854 | /* if this server remaps proxied ports, we'll use |
| 855 | * the port the client connected to with an offset. */ |
Willy Tarreau | 1e582e5 | 2018-09-20 11:29:28 +0200 | [diff] [blame] | 856 | if ((__objt_server(s->target)->flags & SRV_F_MAPPORTS) && cli_conn) { |
David du Colombier | 6f5ccb1 | 2011-03-10 22:26:24 +0100 | [diff] [blame] | 857 | int base_port; |
| 858 | |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 859 | if (conn_get_dst(cli_conn)) { |
| 860 | /* First, retrieve the port from the incoming connection */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 861 | base_port = get_host_port(cli_conn->dst); |
David du Colombier | 6f5ccb1 | 2011-03-10 22:26:24 +0100 | [diff] [blame] | 862 | |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 863 | /* Second, assign the outgoing connection's port */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 864 | base_port += get_host_port(srv_conn->dst); |
| 865 | set_host_port(srv_conn->dst, base_port); |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 866 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 867 | } |
| 868 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 869 | else if (s->be->options & PR_O_DISPATCH) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 870 | /* connect to the defined dispatch addr */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 871 | *srv_conn->dst = s->be->dispatch_addr; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 872 | } |
Willy Tarreau | b363a1f | 2013-10-01 10:45:07 +0200 | [diff] [blame] | 873 | else if ((s->be->options & PR_O_TRANSP) && cli_conn) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 874 | /* in transparent mode, use the original dest addr if no dispatch specified */ |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 875 | if (conn_get_dst(cli_conn) && |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 876 | (cli_conn->dst->ss_family == AF_INET || cli_conn->dst->ss_family == AF_INET6)) |
| 877 | *srv_conn->dst = *cli_conn->dst; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 878 | } |
Alexandre Cassen | 5eb1a90 | 2007-11-29 15:43:32 +0100 | [diff] [blame] | 879 | else if (s->be->options & PR_O_HTTP_PROXY) { |
| 880 | /* If HTTP PROXY option is set, then server is already assigned |
| 881 | * during incoming client request parsing. */ |
| 882 | } |
Willy Tarreau | 1a1158b | 2007-01-20 11:07:46 +0100 | [diff] [blame] | 883 | else { |
| 884 | /* no server and no LB algorithm ! */ |
| 885 | return SRV_STATUS_INTERNAL; |
| 886 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 887 | |
KOVACS Krisztian | b3e54fe | 2014-11-17 15:11:45 +0100 | [diff] [blame] | 888 | /* Copy network namespace from client connection */ |
Thierry FOURNIER | fe1ebcd | 2014-12-19 13:37:11 +0100 | [diff] [blame] | 889 | srv_conn->proxy_netns = cli_conn ? cli_conn->proxy_netns : NULL; |
KOVACS Krisztian | b3e54fe | 2014-11-17 15:11:45 +0100 | [diff] [blame] | 890 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 891 | s->flags |= SF_ADDR_SET; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 892 | return SRV_STATUS_OK; |
| 893 | } |
| 894 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 895 | /* 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] | 896 | * 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] | 897 | * 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] | 898 | * 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] | 899 | * be called before any connection and after any retry or redispatch occurs. |
| 900 | * |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 901 | * 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] | 902 | * |
| 903 | * Returns : |
| 904 | * |
| 905 | * SRV_STATUS_OK if everything is OK. |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 906 | * 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] | 907 | * SRV_STATUS_QUEUED if the connection has been queued. |
| 908 | * SRV_STATUS_FULL if the server(s) is/are saturated and the |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 909 | * connection could not be queued at the server's, |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 910 | * which may be NULL if we queue on the backend. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 911 | * SRV_STATUS_INTERNAL for other unrecoverable errors. |
| 912 | * |
| 913 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 914 | int assign_server_and_queue(struct stream *s) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 915 | { |
| 916 | struct pendconn *p; |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 917 | struct server *srv; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 918 | int err; |
| 919 | |
| 920 | if (s->pend_pos) |
| 921 | return SRV_STATUS_INTERNAL; |
| 922 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 923 | err = SRV_STATUS_OK; |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 924 | if (!(s->flags & SF_ASSIGNED)) { |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 925 | struct server *prev_srv = objt_server(s->target); |
Willy Tarreau | 3d80d91 | 2011-03-10 11:42:13 +0100 | [diff] [blame] | 926 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 927 | err = assign_server(s); |
Willy Tarreau | 3d80d91 | 2011-03-10 11:42:13 +0100 | [diff] [blame] | 928 | if (prev_srv) { |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 929 | /* This stream was previously assigned to a server. We have to |
| 930 | * update the stream's and the server's stats : |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 931 | * - if the server changed : |
| 932 | * - set TX_CK_DOWN if txn.flags was TX_CK_VALID |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 933 | * - set SF_REDISP if it was successfully redispatched |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 934 | * - increment srv->redispatches and be->redispatches |
| 935 | * - if the server remained the same : update retries. |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 936 | */ |
| 937 | |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 938 | if (prev_srv != objt_server(s->target)) { |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 939 | if (s->txn && (s->txn->flags & TX_CK_MASK) == TX_CK_VALID) { |
| 940 | s->txn->flags &= ~TX_CK_MASK; |
| 941 | s->txn->flags |= TX_CK_DOWN; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 942 | } |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 943 | s->flags |= SF_REDISP; |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 944 | _HA_ATOMIC_ADD(&prev_srv->counters.redispatches, 1); |
| 945 | _HA_ATOMIC_ADD(&s->be->be_counters.redispatches, 1); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 946 | } else { |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 947 | _HA_ATOMIC_ADD(&prev_srv->counters.retries, 1); |
| 948 | _HA_ATOMIC_ADD(&s->be->be_counters.retries, 1); |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 949 | } |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 950 | } |
| 951 | } |
| 952 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 953 | switch (err) { |
| 954 | case SRV_STATUS_OK: |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 955 | /* we have SF_ASSIGNED set */ |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 956 | srv = objt_server(s->target); |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 957 | if (!srv) |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 958 | return SRV_STATUS_OK; /* dispatch or proxy mode */ |
| 959 | |
| 960 | /* 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] | 961 | if (s->srv_conn == srv) |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 962 | return SRV_STATUS_OK; |
| 963 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 964 | /* OK, this stream already has an assigned server, but no |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 965 | * connection slot yet. Either it is a redispatch, or it was |
| 966 | * assigned from persistence information (direct mode). |
| 967 | */ |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 968 | if ((s->flags & SF_REDIRECTABLE) && srv->rdr_len) { |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 969 | /* server scheduled for redirection, and already assigned. We |
| 970 | * don't want to go further nor check the queue. |
Willy Tarreau | 21d2af3 | 2008-02-14 20:25:24 +0100 | [diff] [blame] | 971 | */ |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 972 | sess_change_server(s, srv); /* not really needed in fact */ |
Willy Tarreau | 21d2af3 | 2008-02-14 20:25:24 +0100 | [diff] [blame] | 973 | return SRV_STATUS_OK; |
| 974 | } |
| 975 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 976 | /* 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] | 977 | * We know we have to queue it into the server's queue, so if a maxqueue |
| 978 | * is set on the server, we must also check that the server's queue is |
| 979 | * not full, in which case we have to return FULL. |
| 980 | */ |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 981 | if (srv->maxconn && |
| 982 | (srv->nbpend || srv->served >= srv_dynamic_maxconn(srv))) { |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 983 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 984 | if (srv->maxqueue > 0 && srv->nbpend >= srv->maxqueue) |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 985 | return SRV_STATUS_FULL; |
| 986 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 987 | p = pendconn_add(s); |
| 988 | if (p) |
| 989 | return SRV_STATUS_QUEUED; |
| 990 | else |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 991 | return SRV_STATUS_INTERNAL; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 992 | } |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 993 | |
| 994 | /* OK, we can use this server. Let's reserve our place */ |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 995 | sess_change_server(s, srv); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 996 | return SRV_STATUS_OK; |
| 997 | |
| 998 | case SRV_STATUS_FULL: |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 999 | /* queue this stream into the proxy's queue */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1000 | p = pendconn_add(s); |
| 1001 | if (p) |
| 1002 | return SRV_STATUS_QUEUED; |
| 1003 | else |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1004 | return SRV_STATUS_INTERNAL; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1005 | |
| 1006 | case SRV_STATUS_NOSRV: |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1007 | return err; |
| 1008 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1009 | case SRV_STATUS_INTERNAL: |
| 1010 | return err; |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1011 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1012 | default: |
| 1013 | return SRV_STATUS_INTERNAL; |
| 1014 | } |
Willy Tarreau | 5b6995c | 2008-01-13 16:31:17 +0100 | [diff] [blame] | 1015 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1016 | |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1017 | /* If an explicit source binding is specified on the server and/or backend, and |
| 1018 | * 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] | 1019 | * assigned to the stream's pending connection. This function assumes that an |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1020 | * outgoing connection has already been assigned to s->si[1].end. |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1021 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1022 | static void assign_tproxy_address(struct stream *s) |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1023 | { |
Willy Tarreau | 29fbe51 | 2015-08-20 19:35:14 +0200 | [diff] [blame] | 1024 | #if defined(CONFIG_HAP_TRANSPARENT) |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 1025 | struct server *srv = objt_server(s->target); |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1026 | struct conn_src *src; |
Willy Tarreau | b363a1f | 2013-10-01 10:45:07 +0200 | [diff] [blame] | 1027 | struct connection *cli_conn; |
Olivier Houchard | 09a0f03 | 2019-01-17 15:59:13 +0100 | [diff] [blame] | 1028 | struct connection *srv_conn; |
| 1029 | |
| 1030 | if (objt_cs(s->si[1].end)) |
| 1031 | srv_conn = cs_conn(__objt_cs(s->si[1].end)); |
| 1032 | else |
| 1033 | srv_conn = objt_conn(s->si[1].end); |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1034 | |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1035 | if (srv && srv->conn_src.opts & CO_SRC_BIND) |
| 1036 | src = &srv->conn_src; |
| 1037 | else if (s->be->conn_src.opts & CO_SRC_BIND) |
| 1038 | src = &s->be->conn_src; |
| 1039 | else |
| 1040 | return; |
Willy Tarreau | 294c473 | 2011-12-16 21:35:50 +0100 | [diff] [blame] | 1041 | |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1042 | /* FIXME WTA: an address allocation will soon be needed here for src */ |
| 1043 | |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1044 | switch (src->opts & CO_SRC_TPROXY_MASK) { |
| 1045 | case CO_SRC_TPROXY_ADDR: |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1046 | *srv_conn->src = src->tproxy_addr; |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1047 | break; |
| 1048 | case CO_SRC_TPROXY_CLI: |
| 1049 | case CO_SRC_TPROXY_CIP: |
| 1050 | /* 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] | 1051 | cli_conn = objt_conn(strm_orig(s)); |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 1052 | if (cli_conn && conn_get_src(cli_conn)) |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1053 | *srv_conn->src = *cli_conn->src; |
| 1054 | else { |
| 1055 | /* FIXME WTA: the dynamic address may be released here */ |
| 1056 | memset(srv_conn->src, 0, sizeof(*srv_conn->src)); |
| 1057 | } |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1058 | break; |
| 1059 | case CO_SRC_TPROXY_DYN: |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 1060 | if (src->bind_hdr_occ && IS_HTX_STRM(s)) { |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1061 | char *vptr; |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1062 | size_t vlen; |
Willy Tarreau | 294c473 | 2011-12-16 21:35:50 +0100 | [diff] [blame] | 1063 | |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1064 | /* bind to the IP in a header */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1065 | ((struct sockaddr_in *)srv_conn->src)->sin_family = AF_INET; |
| 1066 | ((struct sockaddr_in *)srv_conn->src)->sin_port = 0; |
| 1067 | ((struct sockaddr_in *)srv_conn->src)->sin_addr.s_addr = 0; |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 1068 | if (http_get_htx_hdr(htxbuf(&s->req.buf), |
| 1069 | ist2(src->bind_hdr_name, src->bind_hdr_len), |
| 1070 | src->bind_hdr_occ, NULL, &vptr, &vlen)) { |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1071 | ((struct sockaddr_in *)srv_conn->src)->sin_addr.s_addr = |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 1072 | htonl(inetaddr_host_lim(vptr, vptr + vlen)); |
Willy Tarreau | bce7088 | 2009-09-07 11:51:47 +0200 | [diff] [blame] | 1073 | } |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1074 | } |
Willy Tarreau | 9cd7d6c | 2012-12-08 23:13:33 +0100 | [diff] [blame] | 1075 | break; |
| 1076 | default: |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1077 | /* FIXME WTA: the dynamic address may be released here */ |
| 1078 | memset(srv_conn->src, 0, sizeof(*srv_conn->src)); |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1079 | } |
| 1080 | #endif |
| 1081 | } |
| 1082 | |
Lukas Tribus | da95fd9 | 2018-11-25 13:21:27 +0100 | [diff] [blame] | 1083 | #if defined(USE_OPENSSL) && defined(TLSEXT_TYPE_application_layer_protocol_negotiation) |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1084 | /* |
| 1085 | * Pick the right mux once the connection is established, we should now have |
Willy Tarreau | 94031d3 | 2018-12-19 14:36:29 +0100 | [diff] [blame] | 1086 | * an alpn if available, so we are now able to choose. In this specific case |
| 1087 | * the connection's context is &si[i].end. |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1088 | */ |
| 1089 | static int conn_complete_server(struct connection *conn) |
| 1090 | { |
| 1091 | struct conn_stream *cs = NULL; |
Willy Tarreau | 94031d3 | 2018-12-19 14:36:29 +0100 | [diff] [blame] | 1092 | struct stream *s = container_of(conn->ctx, struct stream, si[1].end); |
Olivier Houchard | bf024f0 | 2018-11-29 17:08:53 +0100 | [diff] [blame] | 1093 | struct server *srv; |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1094 | |
Olivier Houchard | 70d9b2f | 2018-11-29 16:57:32 +0100 | [diff] [blame] | 1095 | task_wakeup(s->task, TASK_WOKEN_IO); |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1096 | conn_clear_xprt_done_cb(conn); |
| 1097 | /* Verify if the connection just established. */ |
| 1098 | if (unlikely(!(conn->flags & (CO_FL_WAIT_L4_CONN | CO_FL_WAIT_L6_CONN | CO_FL_CONNECTED)))) |
| 1099 | conn->flags |= CO_FL_CONNECTED; |
| 1100 | |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1101 | if (conn->flags & CO_FL_ERROR) |
| 1102 | goto fail; |
Olivier Houchard | d76bd2d | 2018-11-29 16:58:49 +0100 | [diff] [blame] | 1103 | si_detach_endpoint(&s->si[1]); |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1104 | cs = si_alloc_cs(&s->si[1], conn); |
| 1105 | if (!cs) |
| 1106 | goto fail; |
Olivier Houchard | f502aca | 2018-12-14 19:42:40 +0100 | [diff] [blame] | 1107 | if (conn_install_mux_be(conn, cs, s->sess) < 0) |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1108 | goto fail; |
Olivier Houchard | bf024f0 | 2018-11-29 17:08:53 +0100 | [diff] [blame] | 1109 | srv = objt_server(s->target); |
Olivier Houchard | 7aec9ed | 2018-12-14 19:31:51 +0100 | [diff] [blame] | 1110 | if (srv && ((s->be->options & PR_O_REUSE_MASK) != PR_O_REUSE_NEVR) && |
Olivier Houchard | bf024f0 | 2018-11-29 17:08:53 +0100 | [diff] [blame] | 1111 | conn->mux->avail_streams(conn) > 0) |
| 1112 | LIST_ADD(&srv->idle_conns[tid], &conn->list); |
| 1113 | |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1114 | return 0; |
| 1115 | |
| 1116 | fail: |
Willy Tarreau | d822013 | 2019-01-28 16:33:35 +0100 | [diff] [blame] | 1117 | si_detach_endpoint(&s->si[1]); |
| 1118 | |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1119 | if (cs) |
| 1120 | cs_free(cs); |
| 1121 | /* kill the connection now */ |
| 1122 | conn_stop_tracking(conn); |
| 1123 | conn_full_close(conn); |
| 1124 | conn_free(conn); |
Olivier Houchard | 4f41751 | 2018-12-27 18:59:46 +0100 | [diff] [blame] | 1125 | /* Let process_stream know it went wrong */ |
| 1126 | s->si[1].flags |= SI_FL_ERR; |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1127 | return -1; |
| 1128 | } |
Olivier Houchard | c6e0bb4 | 2018-11-23 14:24:10 +0100 | [diff] [blame] | 1129 | #endif |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1130 | |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1131 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1132 | /* |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1133 | * This function initiates a connection to the server assigned to this stream |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1134 | * (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] | 1135 | * is assigned yet. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1136 | * It can return one of : |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1137 | * - SF_ERR_NONE if everything's OK |
| 1138 | * - SF_ERR_SRVTO if there are no more servers |
| 1139 | * - SF_ERR_SRVCL if the connection was refused by the server |
| 1140 | * - SF_ERR_PRXCOND if the connection has been limited by the proxy (maxconn) |
| 1141 | * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...) |
| 1142 | * - SF_ERR_INTERNAL for any other purely internal errors |
Tim Düsterhus | 4896c44 | 2016-11-29 02:15:19 +0100 | [diff] [blame] | 1143 | * 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] | 1144 | * 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] | 1145 | * in s->si[1].conn. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1146 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1147 | int connect_server(struct stream *s) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1148 | { |
Olivier Houchard | 522eea7 | 2017-11-03 16:27:47 +0100 | [diff] [blame] | 1149 | struct connection *cli_conn = NULL; |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 1150 | struct connection *srv_conn = NULL; |
| 1151 | struct connection *old_conn = NULL; |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 1152 | struct conn_stream *srv_cs = NULL; |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1153 | struct server *srv; |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1154 | int reuse = 0; |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 1155 | int reuse_orphan = 0; |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1156 | int init_mux = 0; |
Olivier Houchard | 4dc8553 | 2019-01-29 15:50:38 +0100 | [diff] [blame] | 1157 | int alloced_cs = 0; |
Willy Tarreau | 9650f37 | 2009-08-16 14:02:45 +0200 | [diff] [blame] | 1158 | int err; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1159 | |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1160 | |
Olivier Houchard | 0fa989f | 2018-12-05 17:08:55 +0100 | [diff] [blame] | 1161 | /* Some, such as http_proxy and the LUA, create their connection and |
| 1162 | * conn_stream manually, so if we already have a conn_stream, try |
| 1163 | * to use it. |
| 1164 | */ |
| 1165 | srv_cs = objt_cs(s->si[1].end); |
Olivier Houchard | 9ef5155 | 2019-01-28 15:33:15 +0100 | [diff] [blame] | 1166 | if (!srv_cs) |
| 1167 | srv_conn = objt_conn(s->si[1].end); |
| 1168 | else |
| 1169 | srv_conn = cs_conn(srv_cs); |
| 1170 | |
| 1171 | if (srv_conn) { |
| 1172 | if (!srv_conn->target || srv_conn->target == s->target) { |
| 1173 | srv_conn->flags &= ~(CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH); |
| 1174 | if (srv_cs) |
Willy Tarreau | 7bb39d7 | 2019-06-03 14:23:33 +0200 | [diff] [blame] | 1175 | srv_cs->flags &= ~(CS_FL_ERROR | CS_FL_EOS); |
Olivier Houchard | 0fa989f | 2018-12-05 17:08:55 +0100 | [diff] [blame] | 1176 | reuse = 1; |
Olivier Houchard | 9ef5155 | 2019-01-28 15:33:15 +0100 | [diff] [blame] | 1177 | old_conn = srv_conn; |
| 1178 | } else { |
| 1179 | srv_conn = NULL; |
Olivier Houchard | a1ab973 | 2019-07-08 16:30:32 +0200 | [diff] [blame] | 1180 | srv_cs = NULL; |
Olivier Houchard | 9ef5155 | 2019-01-28 15:33:15 +0100 | [diff] [blame] | 1181 | si_release_endpoint(&s->si[1]); |
Olivier Houchard | ac1ce6f | 2018-12-08 19:08:48 +0100 | [diff] [blame] | 1182 | } |
Olivier Houchard | 9ef5155 | 2019-01-28 15:33:15 +0100 | [diff] [blame] | 1183 | } |
| 1184 | |
| 1185 | if (!old_conn) { |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1186 | struct sess_srv_list *srv_list; |
| 1187 | list_for_each_entry(srv_list, &s->sess->srv_list, srv_list) { |
| 1188 | if (srv_list->target == s->target) { |
| 1189 | list_for_each_entry(srv_conn, &srv_list->conn_list, |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 1190 | session_list) { |
| 1191 | if (conn_xprt_ready(srv_conn) && |
| 1192 | srv_conn->mux && (srv_conn->mux->avail_streams(srv_conn) > 0)) { |
| 1193 | reuse = 1; |
| 1194 | break; |
| 1195 | } |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 1196 | } |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1197 | break; |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 1198 | } |
| 1199 | } |
Olivier Houchard | c3fa638 | 2018-12-27 15:29:53 +0100 | [diff] [blame] | 1200 | if (reuse == 0) { |
| 1201 | srv_conn = NULL; |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1202 | if (!LIST_ISEMPTY(&s->sess->srv_list)) { |
| 1203 | srv_list = LIST_ELEM(s->sess->srv_list.n, |
| 1204 | struct sess_srv_list *, srv_list); |
| 1205 | if (!LIST_ISEMPTY(&srv_list->conn_list)) |
| 1206 | srv_conn = LIST_ELEM(srv_list->conn_list.n, |
| 1207 | struct connection *, session_list); |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 1208 | } |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1209 | |
Olivier Houchard | 00cf70f | 2018-11-30 17:24:55 +0100 | [diff] [blame] | 1210 | } |
| 1211 | } |
| 1212 | old_conn = srv_conn; |
| 1213 | |
Willy Tarreau | 7b00492 | 2015-08-04 19:34:21 +0200 | [diff] [blame] | 1214 | srv = objt_server(s->target); |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1215 | |
Willy Tarreau | 8dff998 | 2015-08-04 20:45:52 +0200 | [diff] [blame] | 1216 | if (srv && !reuse) { |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1217 | srv_conn = NULL; |
Willy Tarreau | 8dff998 | 2015-08-04 20:45:52 +0200 | [diff] [blame] | 1218 | |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1219 | /* Below we pick connections from the safe or idle lists based |
| 1220 | * on the strategy, the fact that this is a first or second |
| 1221 | * (retryable) request, with the indicated priority (1 or 2) : |
| 1222 | * |
| 1223 | * SAFE AGGR ALWS |
| 1224 | * |
| 1225 | * +-----+-----+ +-----+-----+ +-----+-----+ |
| 1226 | * req| 1st | 2nd | req| 1st | 2nd | req| 1st | 2nd | |
| 1227 | * ----+-----+-----+ ----+-----+-----+ ----+-----+-----+ |
| 1228 | * safe| - | 2 | safe| 1 | 2 | safe| 1 | 2 | |
| 1229 | * ----+-----+-----+ ----+-----+-----+ ----+-----+-----+ |
| 1230 | * idle| - | 1 | idle| - | 1 | idle| 2 | 1 | |
| 1231 | * ----+-----+-----+ ----+-----+-----+ ----+-----+-----+ |
| 1232 | */ |
Christopher Faulet | 40a007c | 2017-07-03 15:41:01 +0200 | [diff] [blame] | 1233 | if (srv->idle_conns && !LIST_ISEMPTY(&srv->idle_conns[tid]) && |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1234 | ((s->be->options & PR_O_REUSE_MASK) != PR_O_REUSE_NEVR && |
| 1235 | s->txn && (s->txn->flags & TX_NOT_FIRST))) { |
Christopher Faulet | 40a007c | 2017-07-03 15:41:01 +0200 | [diff] [blame] | 1236 | srv_conn = LIST_ELEM(srv->idle_conns[tid].n, struct connection *, list); |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1237 | } |
Christopher Faulet | 40a007c | 2017-07-03 15:41:01 +0200 | [diff] [blame] | 1238 | else if (srv->safe_conns && !LIST_ISEMPTY(&srv->safe_conns[tid]) && |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1239 | ((s->txn && (s->txn->flags & TX_NOT_FIRST)) || |
| 1240 | (s->be->options & PR_O_REUSE_MASK) >= PR_O_REUSE_AGGR)) { |
Christopher Faulet | 40a007c | 2017-07-03 15:41:01 +0200 | [diff] [blame] | 1241 | srv_conn = LIST_ELEM(srv->safe_conns[tid].n, struct connection *, list); |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1242 | } |
Christopher Faulet | 40a007c | 2017-07-03 15:41:01 +0200 | [diff] [blame] | 1243 | else if (srv->idle_conns && !LIST_ISEMPTY(&srv->idle_conns[tid]) && |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1244 | (s->be->options & PR_O_REUSE_MASK) == PR_O_REUSE_ALWS) { |
Christopher Faulet | 40a007c | 2017-07-03 15:41:01 +0200 | [diff] [blame] | 1245 | srv_conn = LIST_ELEM(srv->idle_conns[tid].n, struct connection *, list); |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 1246 | } else if (srv->idle_orphan_conns && !LIST_ISEMPTY(&srv->idle_orphan_conns[tid]) && |
| 1247 | (((s->be->options & PR_O_REUSE_MASK) == PR_O_REUSE_ALWS) || |
| 1248 | (((s->be->options & PR_O_REUSE_MASK) != PR_O_REUSE_NEVR) && |
| 1249 | s->txn && (s->txn->flags & TX_NOT_FIRST)))) { |
Olivier Houchard | 7f1bc31 | 2019-01-22 16:11:03 +0100 | [diff] [blame] | 1250 | srv_conn = LIST_POP_LOCKED(&srv->idle_orphan_conns[tid], |
Willy Tarreau | c912f94 | 2019-02-28 16:06:56 +0100 | [diff] [blame] | 1251 | struct connection *, list); |
| 1252 | if (srv_conn) |
Olivier Houchard | 7f1bc31 | 2019-01-22 16:11:03 +0100 | [diff] [blame] | 1253 | reuse_orphan = 1; |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1254 | } |
Willy Tarreau | 8dff998 | 2015-08-04 20:45:52 +0200 | [diff] [blame] | 1255 | |
Willy Tarreau | 449d74a | 2015-08-05 17:16:33 +0200 | [diff] [blame] | 1256 | /* If we've picked a connection from the pool, we now have to |
| 1257 | * detach it. We may have to get rid of the previous idle |
| 1258 | * connection we had, so for this we try to swap it with the |
| 1259 | * other owner's. That way it may remain alive for others to |
| 1260 | * pick. |
| 1261 | */ |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1262 | if (srv_conn) |
Willy Tarreau | 8dff998 | 2015-08-04 20:45:52 +0200 | [diff] [blame] | 1263 | reuse = 1; |
Willy Tarreau | 8dff998 | 2015-08-04 20:45:52 +0200 | [diff] [blame] | 1264 | } |
| 1265 | |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1266 | if (reuse) { |
| 1267 | /* Disable connection reuse if a dynamic source is used. |
| 1268 | * As long as we don't share connections between servers, |
| 1269 | * we don't need to disable connection reuse on no-idempotent |
| 1270 | * requests nor when PROXY protocol is used. |
| 1271 | */ |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1272 | if (srv && srv->conn_src.opts & CO_SRC_BIND) { |
| 1273 | if ((srv->conn_src.opts & CO_SRC_TPROXY_MASK) == CO_SRC_TPROXY_DYN) |
| 1274 | reuse = 0; |
| 1275 | } |
| 1276 | else if (s->be->conn_src.opts & CO_SRC_BIND) { |
| 1277 | if ((s->be->conn_src.opts & CO_SRC_TPROXY_MASK) == CO_SRC_TPROXY_DYN) |
| 1278 | reuse = 0; |
| 1279 | } |
| 1280 | } |
Olivier Houchard | 14fcc2e | 2019-06-05 13:55:01 +0200 | [diff] [blame] | 1281 | if (((!reuse || (srv_conn && !(srv_conn->flags & CO_FL_CONNECTED))) |
| 1282 | && ha_used_fds > global.tune.pool_high_count) && srv->idle_orphan_conns) { |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 1283 | struct connection *tokill_conn; |
| 1284 | |
| 1285 | /* We can't reuse a connection, and e have more FDs than deemd |
| 1286 | * acceptable, attempt to kill an idling connection |
| 1287 | */ |
| 1288 | /* First, try from our own idle list */ |
| 1289 | tokill_conn = LIST_POP_LOCKED(&srv->idle_orphan_conns[tid], |
| 1290 | struct connection *, list); |
| 1291 | if (tokill_conn) |
| 1292 | tokill_conn->mux->destroy(tokill_conn->ctx); |
| 1293 | /* If not, iterate over other thread's idling pool, and try to grab one */ |
| 1294 | else { |
| 1295 | int i; |
| 1296 | |
| 1297 | for (i = 0; i < global.nbthread; i++) { |
| 1298 | if (i == tid) |
| 1299 | continue; |
Willy Tarreau | 08e2b41 | 2019-05-26 11:50:08 +0200 | [diff] [blame] | 1300 | |
| 1301 | // just silence stupid gcc which reports an absurd |
| 1302 | // out-of-bounds warning for <i> which is always |
| 1303 | // exactly zero without threads, but it seems to |
| 1304 | // see it possibly larger. |
| 1305 | ALREADY_CHECKED(i); |
| 1306 | |
Olivier Houchard | 88698d9 | 2019-04-16 19:07:22 +0200 | [diff] [blame] | 1307 | tokill_conn = LIST_POP_LOCKED(&srv->idle_orphan_conns[i], |
| 1308 | struct connection *, list); |
| 1309 | if (tokill_conn) { |
| 1310 | /* We got one, put it into the concerned thread's to kill list, and wake it's kill task */ |
| 1311 | |
| 1312 | LIST_ADDQ_LOCKED(&toremove_connections[i], |
| 1313 | &tokill_conn->list); |
| 1314 | task_wakeup(idle_conn_cleanup[i], TASK_WOKEN_OTHER); |
| 1315 | break; |
| 1316 | } |
| 1317 | } |
| 1318 | } |
| 1319 | |
| 1320 | } |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 1321 | /* If we're really reusing the connection, remove it from the orphan |
| 1322 | * list and add it back to the idle list. |
| 1323 | */ |
Christopher Faulet | 46451d6 | 2019-04-19 15:39:22 +0200 | [diff] [blame] | 1324 | if (reuse) { |
| 1325 | if (reuse_orphan) { |
| 1326 | srv_conn->idle_time = 0; |
| 1327 | _HA_ATOMIC_SUB(&srv->curr_idle_conns, 1); |
| 1328 | __ha_barrier_atomic_store(); |
| 1329 | srv->curr_idle_thr[tid]--; |
| 1330 | LIST_ADDQ(&srv->idle_conns[tid], &srv_conn->list); |
| 1331 | } |
| 1332 | else { |
| 1333 | if (srv_conn->flags & CO_FL_SESS_IDLE) { |
| 1334 | struct session *sess = srv_conn->owner; |
Olivier Houchard | a2dbeb2 | 2018-12-28 18:50:57 +0100 | [diff] [blame] | 1335 | |
Christopher Faulet | 46451d6 | 2019-04-19 15:39:22 +0200 | [diff] [blame] | 1336 | srv_conn->flags &= ~CO_FL_SESS_IDLE; |
| 1337 | sess->idle_conns--; |
| 1338 | } |
Olivier Houchard | a2dbeb2 | 2018-12-28 18:50:57 +0100 | [diff] [blame] | 1339 | } |
Olivier Houchard | 0c18a6f | 2018-12-02 14:11:41 +0100 | [diff] [blame] | 1340 | } |
Willy Tarreau | 34601a8 | 2013-12-15 16:33:46 +0100 | [diff] [blame] | 1341 | |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1342 | /* We're about to use another connection, let the mux know we're |
| 1343 | * done with this one |
| 1344 | */ |
Olivier Houchard | c685d70 | 2018-12-28 16:20:25 +0100 | [diff] [blame] | 1345 | if (old_conn != srv_conn && old_conn && reuse && !reuse_orphan) { |
| 1346 | struct session *sess = srv_conn->owner; |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1347 | |
Olivier Houchard | c685d70 | 2018-12-28 16:20:25 +0100 | [diff] [blame] | 1348 | if (sess) { |
| 1349 | if (old_conn && !(old_conn->flags & CO_FL_PRIVATE) && |
| 1350 | old_conn->mux != NULL) { |
Olivier Houchard | a2dbeb2 | 2018-12-28 18:50:57 +0100 | [diff] [blame] | 1351 | if (old_conn->flags & CO_FL_SESS_IDLE) |
| 1352 | s->sess->idle_conns--; |
Olivier Houchard | c685d70 | 2018-12-28 16:20:25 +0100 | [diff] [blame] | 1353 | session_unown_conn(s->sess, old_conn); |
| 1354 | old_conn->owner = sess; |
Willy Tarreau | 3c4e19f | 2019-02-01 11:54:23 +0100 | [diff] [blame] | 1355 | if (!session_add_conn(sess, old_conn, old_conn->target)) { |
Olivier Houchard | a48237f | 2019-05-02 12:04:15 +0200 | [diff] [blame] | 1356 | old_conn->flags &= ~CO_FL_SESS_IDLE; |
Olivier Houchard | c685d70 | 2018-12-28 16:20:25 +0100 | [diff] [blame] | 1357 | old_conn->owner = NULL; |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 1358 | old_conn->mux->destroy(old_conn->ctx); |
Olivier Houchard | c685d70 | 2018-12-28 16:20:25 +0100 | [diff] [blame] | 1359 | } else |
| 1360 | session_check_idle_conn(sess, old_conn); |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1361 | } |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1362 | } |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1363 | } |
| 1364 | |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1365 | if (reuse) { |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 1366 | /* We already created a cs earlier when using http_proxy, so |
| 1367 | * only create a new one if we don't have one already. |
| 1368 | */ |
Olivier Houchard | 9ef5155 | 2019-01-28 15:33:15 +0100 | [diff] [blame] | 1369 | if (!srv_cs && srv_conn->mux) { |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1370 | int avail = srv_conn->mux->avail_streams(srv_conn); |
| 1371 | |
| 1372 | if (avail <= 1) { |
Olivier Houchard | 2442f68 | 2018-12-01 17:03:38 +0100 | [diff] [blame] | 1373 | /* No more streams available, remove it from the list */ |
| 1374 | LIST_DEL(&srv_conn->list); |
| 1375 | LIST_INIT(&srv_conn->list); |
| 1376 | } |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1377 | |
| 1378 | if (avail >= 1) { |
| 1379 | srv_cs = srv_conn->mux->attach(srv_conn, s->sess); |
Olivier Houchard | 4dc8553 | 2019-01-29 15:50:38 +0100 | [diff] [blame] | 1380 | if (srv_cs) { |
| 1381 | alloced_cs = 1; |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1382 | si_attach_cs(&s->si[1], srv_cs); |
Olivier Houchard | 4dc8553 | 2019-01-29 15:50:38 +0100 | [diff] [blame] | 1383 | } else |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1384 | srv_conn = NULL; |
| 1385 | } |
Olivier Houchard | 134a204 | 2018-12-28 14:45:47 +0100 | [diff] [blame] | 1386 | else |
| 1387 | srv_conn = NULL; |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1388 | } |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1389 | /* otherwise srv_conn is left intact */ |
| 1390 | } |
| 1391 | else |
| 1392 | srv_conn = NULL; |
| 1393 | |
| 1394 | /* no reuse or failed to reuse the connection above, pick a new one */ |
| 1395 | if (!srv_conn) { |
| 1396 | srv_conn = conn_new(); |
Willy Tarreau | 1da41ec | 2019-02-01 16:38:48 +0100 | [diff] [blame] | 1397 | if (srv_conn) |
| 1398 | srv_conn->target = s->target; |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1399 | srv_cs = NULL; |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1400 | } |
Willy Tarreau | 2c7dedd | 2019-01-24 18:22:19 +0100 | [diff] [blame] | 1401 | |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1402 | if (srv_conn && old_conn != srv_conn) { |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1403 | if (srv_conn->owner) |
| 1404 | session_unown_conn(srv_conn->owner, srv_conn); |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1405 | srv_conn->owner = s->sess; |
Willy Tarreau | 3c4e19f | 2019-02-01 11:54:23 +0100 | [diff] [blame] | 1406 | if (!session_add_conn(s->sess, srv_conn, srv_conn->target)) { |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1407 | /* If we failed to attach the connection, detach the |
| 1408 | * conn_stream, possibly destroying the connection */ |
Olivier Houchard | 4dc8553 | 2019-01-29 15:50:38 +0100 | [diff] [blame] | 1409 | if (alloced_cs) |
| 1410 | si_release_endpoint(&s->si[1]); |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1411 | srv_conn->owner = NULL; |
Olivier Houchard | 26da323 | 2019-01-29 16:05:02 +0100 | [diff] [blame] | 1412 | if (srv_conn->mux && !srv_add_to_idle_list(objt_server(srv_conn->target), srv_conn)) |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1413 | /* The server doesn't want it, let's kill the connection right away */ |
Christopher Faulet | 73c1207 | 2019-04-08 11:23:22 +0200 | [diff] [blame] | 1414 | srv_conn->mux->destroy(srv_conn->ctx); |
Olivier Houchard | 351411f | 2018-12-27 17:20:54 +0100 | [diff] [blame] | 1415 | srv_conn = NULL; |
| 1416 | |
| 1417 | } |
Willy Tarreau | 323a2d9 | 2015-08-04 19:00:17 +0200 | [diff] [blame] | 1418 | } |
Willy Tarreau | c12b5e6 | 2015-08-04 19:45:36 +0200 | [diff] [blame] | 1419 | |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1420 | if (!srv_conn) |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1421 | return SF_ERR_RESOURCE; |
Willy Tarreau | 32e3c6a | 2013-10-11 19:34:20 +0200 | [diff] [blame] | 1422 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1423 | if (!(s->flags & SF_ADDR_SET)) { |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1424 | err = assign_server_address(s, srv_conn); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1425 | if (err != SRV_STATUS_OK) |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1426 | return SF_ERR_INTERNAL; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1427 | } |
| 1428 | |
Olivier Houchard | 9a86fcb | 2018-12-11 16:47:14 +0100 | [diff] [blame] | 1429 | if (!conn_xprt_ready(srv_conn) && !srv_conn->mux) { |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1430 | /* set the correct protocol on the output stream interface */ |
Christopher Faulet | 2bf88c0 | 2018-02-28 10:33:34 +0100 | [diff] [blame] | 1431 | if (srv) |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1432 | 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] | 1433 | else if (obj_type(s->target) == OBJ_TYPE_PROXY) { |
| 1434 | /* proxies exclusively run on raw_sock right now */ |
Willy Tarreau | c0e16f2 | 2019-07-17 18:16:30 +0200 | [diff] [blame] | 1435 | conn_prepare(srv_conn, protocol_by_family(srv_conn->dst->ss_family), xprt_get(XPRT_RAW)); |
Olivier Houchard | 1295016 | 2018-11-23 14:32:08 +0100 | [diff] [blame] | 1436 | if (!(srv_conn->ctrl)) |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1437 | return SF_ERR_INTERNAL; |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1438 | } |
| 1439 | else |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1440 | return SF_ERR_INTERNAL; /* how did we get there ? */ |
Willy Tarreau | d02394b | 2012-05-11 18:32:18 +0200 | [diff] [blame] | 1441 | |
Lukas Tribus | da95fd9 | 2018-11-25 13:21:27 +0100 | [diff] [blame] | 1442 | #if defined(USE_OPENSSL) && defined(TLSEXT_TYPE_application_layer_protocol_negotiation) |
Olivier Houchard | 1295016 | 2018-11-23 14:32:08 +0100 | [diff] [blame] | 1443 | if (!srv || |
| 1444 | ((!(srv->ssl_ctx.alpn_str) && !(srv->ssl_ctx.npn_str)) || |
Olivier Houchard | b4a8b2c | 2019-06-15 00:13:15 +0200 | [diff] [blame] | 1445 | srv->mux_proto || s->be->mode != PR_MODE_HTTP)) |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1446 | #endif |
| 1447 | { |
Olivier Houchard | 0fa989f | 2018-12-05 17:08:55 +0100 | [diff] [blame] | 1448 | srv_cs = objt_cs(s->si[1].end); |
| 1449 | if (!srv_cs || srv_cs->conn != srv_conn) |
| 1450 | srv_cs = si_alloc_cs(&s->si[1], srv_conn); |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1451 | if (!srv_cs) { |
| 1452 | conn_free(srv_conn); |
| 1453 | return SF_ERR_RESOURCE; |
| 1454 | } |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1455 | init_mux = 1; |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1456 | } |
Lukas Tribus | da95fd9 | 2018-11-25 13:21:27 +0100 | [diff] [blame] | 1457 | #if defined(USE_OPENSSL) && defined(TLSEXT_TYPE_application_layer_protocol_negotiation) |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1458 | else { |
Willy Tarreau | 94031d3 | 2018-12-19 14:36:29 +0100 | [diff] [blame] | 1459 | srv_conn->ctx = &s->si[1].end; |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1460 | /* Store the connection into the stream interface, |
| 1461 | * while we still don't have a mux, so that if the |
| 1462 | * stream is destroyed before the connection is |
Olivier Houchard | ee23b2a | 2018-11-23 17:07:04 +0100 | [diff] [blame] | 1463 | * established, we have a chance to destroy it even |
| 1464 | * if it is no longer referenced in the session. |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1465 | */ |
Olivier Houchard | ee23b2a | 2018-11-23 17:07:04 +0100 | [diff] [blame] | 1466 | s->si[1].end = &srv_conn->obj_type; |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1467 | conn_set_xprt_done_cb(srv_conn, conn_complete_server); |
| 1468 | } |
| 1469 | |
| 1470 | #endif |
| 1471 | |
Christopher Faulet | 2bf88c0 | 2018-02-28 10:33:34 +0100 | [diff] [blame] | 1472 | |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1473 | /* process the case where the server requires the PROXY protocol to be sent */ |
| 1474 | srv_conn->send_proxy_ofs = 0; |
Olivier Houchard | 522eea7 | 2017-11-03 16:27:47 +0100 | [diff] [blame] | 1475 | cli_conn = objt_conn(strm_orig(s)); |
| 1476 | |
Willy Tarreau | 7b00492 | 2015-08-04 19:34:21 +0200 | [diff] [blame] | 1477 | if (srv && srv->pp_opts) { |
Willy Tarreau | 387ebf8 | 2015-08-04 19:24:13 +0200 | [diff] [blame] | 1478 | srv_conn->flags |= CO_FL_PRIVATE; |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1479 | srv_conn->flags |= CO_FL_SEND_PROXY; |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1480 | srv_conn->send_proxy_ofs = 1; /* must compute size */ |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1481 | if (cli_conn) |
Willy Tarreau | 3cc01d8 | 2019-07-17 11:27:38 +0200 | [diff] [blame] | 1482 | conn_get_dst(cli_conn); |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1483 | } |
Willy Tarreau | 2a6e880 | 2013-10-24 15:50:53 +0200 | [diff] [blame] | 1484 | |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1485 | assign_tproxy_address(s); |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1486 | |
| 1487 | if (srv && (srv->flags & SRV_F_SOCKS4_PROXY)) { |
| 1488 | srv_conn->send_proxy_ofs = 1; |
| 1489 | srv_conn->flags |= CO_FL_SOCKS4; |
| 1490 | } |
Willy Tarreau | ff605db | 2013-12-20 11:09:51 +0100 | [diff] [blame] | 1491 | } |
Olivier Houchard | 9a86fcb | 2018-12-11 16:47:14 +0100 | [diff] [blame] | 1492 | else if (!conn_xprt_ready(srv_conn)) { |
| 1493 | if (srv_conn->mux->reset) |
| 1494 | srv_conn->mux->reset(srv_conn); |
| 1495 | } |
Olivier Houchard | 7c6f8b1 | 2018-11-13 16:48:36 +0100 | [diff] [blame] | 1496 | else |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1497 | s->flags |= SF_SRV_REUSED; |
Willy Tarreau | b1d6774 | 2010-03-29 19:36:59 +0200 | [diff] [blame] | 1498 | |
William Lallemand | b7ff6a3 | 2012-03-02 14:35:21 +0100 | [diff] [blame] | 1499 | /* flag for logging source ip/port */ |
Willy Tarreau | d0d8da9 | 2015-04-04 02:10:38 +0200 | [diff] [blame] | 1500 | if (strm_fe(s)->options2 & PR_O2_SRC_ADDR) |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1501 | s->si[1].flags |= SI_FL_SRC_ADDR; |
William Lallemand | b7ff6a3 | 2012-03-02 14:35:21 +0100 | [diff] [blame] | 1502 | |
Willy Tarreau | 14f8e86 | 2012-08-30 22:23:13 +0200 | [diff] [blame] | 1503 | /* disable lingering */ |
| 1504 | if (s->be->options & PR_O_TCP_NOLING) |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1505 | s->si[1].flags |= SI_FL_NOLINGER; |
Willy Tarreau | 14f8e86 | 2012-08-30 22:23:13 +0200 | [diff] [blame] | 1506 | |
Willy Tarreau | f157384 | 2018-12-14 11:35:36 +0100 | [diff] [blame] | 1507 | if (s->flags & SF_SRV_REUSED) { |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1508 | _HA_ATOMIC_ADD(&s->be->be_counters.reuse, 1); |
Willy Tarreau | cc79ed2 | 2018-12-15 15:11:36 +0100 | [diff] [blame] | 1509 | if (srv) |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1510 | _HA_ATOMIC_ADD(&srv->counters.reuse, 1); |
Willy Tarreau | f157384 | 2018-12-14 11:35:36 +0100 | [diff] [blame] | 1511 | } else { |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1512 | _HA_ATOMIC_ADD(&s->be->be_counters.connect, 1); |
Willy Tarreau | cc79ed2 | 2018-12-15 15:11:36 +0100 | [diff] [blame] | 1513 | if (srv) |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1514 | _HA_ATOMIC_ADD(&srv->counters.connect, 1); |
Willy Tarreau | f157384 | 2018-12-14 11:35:36 +0100 | [diff] [blame] | 1515 | } |
| 1516 | |
Olivier Houchard | 201b9f4 | 2018-11-21 00:16:29 +0100 | [diff] [blame] | 1517 | err = si_connect(&s->si[1], srv_conn); |
Willy Tarreau | 09e0203 | 2019-07-18 16:18:20 +0200 | [diff] [blame] | 1518 | if (err != SF_ERR_NONE) |
| 1519 | return err; |
| 1520 | |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1521 | /* We have to defer the mux initialization until after si_connect() |
| 1522 | * has been called, as we need the xprt to have been properly |
| 1523 | * initialized, or any attempt to recv during the mux init may |
| 1524 | * fail, and flag the connection as CO_FL_ERROR. |
| 1525 | */ |
| 1526 | if (init_mux) { |
Olivier Houchard | 7493114 | 2019-01-29 19:11:16 +0100 | [diff] [blame] | 1527 | if (conn_install_mux_be(srv_conn, srv_cs, s->sess) < 0) { |
| 1528 | conn_full_close(srv_conn); |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1529 | return SF_ERR_INTERNAL; |
Olivier Houchard | 7493114 | 2019-01-29 19:11:16 +0100 | [diff] [blame] | 1530 | } |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1531 | /* If we're doing http-reuse always, and the connection |
| 1532 | * is an http2 connection, add it to the available list, |
| 1533 | * so that others can use it right away. |
| 1534 | */ |
| 1535 | if (srv && ((s->be->options & PR_O_REUSE_MASK) == PR_O_REUSE_ALWS) && |
| 1536 | srv_conn->mux->avail_streams(srv_conn) > 0) |
| 1537 | LIST_ADD(&srv->idle_conns[tid], &srv_conn->list); |
| 1538 | } |
Olivier Houchard | fe50bfb | 2019-05-27 12:09:19 +0200 | [diff] [blame] | 1539 | /* The CO_FL_SEND_PROXY flag may have been set by the connect method, |
| 1540 | * if so, add our handshake pseudo-XPRT now. |
| 1541 | */ |
Olivier Houchard | 6c6dc58 | 2019-06-24 18:19:40 +0200 | [diff] [blame] | 1542 | if ((srv_conn->flags & CO_FL_HANDSHAKE_NOSSL)) { |
Olivier Houchard | fe50bfb | 2019-05-27 12:09:19 +0200 | [diff] [blame] | 1543 | if (xprt_add_hs(srv_conn) < 0) { |
| 1544 | conn_full_close(srv_conn); |
| 1545 | return SF_ERR_INTERNAL; |
| 1546 | } |
| 1547 | } |
Olivier Houchard | 5cd6217 | 2019-01-04 15:52:26 +0100 | [diff] [blame] | 1548 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1549 | |
Willy Tarreau | 5db847a | 2019-05-09 14:13:35 +0200 | [diff] [blame] | 1550 | #if USE_OPENSSL && (defined(OPENSSL_IS_BORINGSSL) || (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)) |
Olivier Houchard | 4cd2af4 | 2019-05-06 15:18:27 +0200 | [diff] [blame] | 1551 | |
Olivier Houchard | 8694e5b | 2019-06-15 00:14:05 +0200 | [diff] [blame] | 1552 | if (!reuse && cli_conn && srv && srv_conn->mux && |
Olivier Houchard | 522eea7 | 2017-11-03 16:27:47 +0100 | [diff] [blame] | 1553 | (srv->ssl_ctx.options & SRV_SSL_O_EARLY_DATA) && |
Olivier Houchard | 865d839 | 2019-05-03 22:46:27 +0200 | [diff] [blame] | 1554 | /* Only attempt to use early data if either the client sent |
| 1555 | * early data, so that we know it can handle a 425, or if |
| 1556 | * we are allwoed to retry requests on early data failure, and |
| 1557 | * it's our first try |
| 1558 | */ |
| 1559 | ((cli_conn->flags & CO_FL_EARLY_DATA) || |
| 1560 | ((s->be->retry_type & PR_RE_EARLY_ERROR) && |
| 1561 | s->si[1].conn_retries == s->be->conn_retries)) && |
| 1562 | !channel_is_empty(si_oc(&s->si[1])) && |
| 1563 | srv_conn->flags & CO_FL_SSL_WAIT_HS) |
Olivier Houchard | 522eea7 | 2017-11-03 16:27:47 +0100 | [diff] [blame] | 1564 | 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] | 1565 | #endif |
Olivier Houchard | 522eea7 | 2017-11-03 16:27:47 +0100 | [diff] [blame] | 1566 | |
Willy Tarreau | 14f8e86 | 2012-08-30 22:23:13 +0200 | [diff] [blame] | 1567 | /* set connect timeout */ |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1568 | 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] | 1569 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1570 | if (srv) { |
Christopher Faulet | 29f77e8 | 2017-06-08 14:04:45 +0200 | [diff] [blame] | 1571 | int count; |
| 1572 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1573 | s->flags |= SF_CURR_SESS; |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1574 | count = _HA_ATOMIC_ADD(&srv->cur_sess, 1); |
Christopher Faulet | 29f77e8 | 2017-06-08 14:04:45 +0200 | [diff] [blame] | 1575 | HA_ATOMIC_UPDATE_MAX(&srv->counters.cur_sess_max, count); |
Willy Tarreau | 5140623 | 2008-03-10 22:04:20 +0100 | [diff] [blame] | 1576 | if (s->be->lbprm.server_take_conn) |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1577 | s->be->lbprm.server_take_conn(srv); |
Willy Tarreau | 732eac4 | 2015-07-09 11:40:25 +0200 | [diff] [blame] | 1578 | |
| 1579 | #ifdef USE_OPENSSL |
| 1580 | if (srv->ssl_ctx.sni) { |
| 1581 | struct sample *smp; |
Willy Tarreau | 732eac4 | 2015-07-09 11:40:25 +0200 | [diff] [blame] | 1582 | |
Christopher Faulet | 7d37fbb | 2019-07-15 15:37:57 +0200 | [diff] [blame] | 1583 | smp = sample_fetch_as_type(s->be, s->sess, s, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, |
| 1584 | srv->ssl_ctx.sni, SMP_T_STR); |
Willy Tarreau | 2e0565c | 2016-08-09 11:55:21 +0200 | [diff] [blame] | 1585 | if (smp_make_safe(smp)) { |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1586 | ssl_sock_set_servername(srv_conn, |
| 1587 | smp->data.u.str.area); |
Willy Tarreau | 387ebf8 | 2015-08-04 19:24:13 +0200 | [diff] [blame] | 1588 | srv_conn->flags |= CO_FL_PRIVATE; |
Willy Tarreau | 732eac4 | 2015-07-09 11:40:25 +0200 | [diff] [blame] | 1589 | } |
| 1590 | } |
| 1591 | #endif /* USE_OPENSSL */ |
| 1592 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1593 | } |
| 1594 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1595 | return SF_ERR_NONE; /* connection is OK */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1596 | } |
| 1597 | |
| 1598 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1599 | /* This function performs the "redispatch" part of a connection attempt. It |
| 1600 | * will assign a server if required, queue the connection if required, and |
| 1601 | * handle errors that might arise at this level. It can change the server |
| 1602 | * state. It will return 1 if it encounters an error, switches the server |
| 1603 | * state, or has to queue a connection. Otherwise, it will return 0 indicating |
| 1604 | * that the connection is ready to use. |
| 1605 | */ |
| 1606 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1607 | int srv_redispatch_connect(struct stream *s) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1608 | { |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1609 | struct server *srv; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1610 | int conn_err; |
| 1611 | |
| 1612 | /* We know that we don't have any connection pending, so we will |
| 1613 | * try to get a new one, and wait in this state if it's queued |
| 1614 | */ |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1615 | redispatch: |
Willy Tarreau | f1fd9dc | 2014-04-24 20:47:57 +0200 | [diff] [blame] | 1616 | conn_err = assign_server_and_queue(s); |
| 1617 | srv = objt_server(s->target); |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1618 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1619 | switch (conn_err) { |
| 1620 | case SRV_STATUS_OK: |
| 1621 | break; |
| 1622 | |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1623 | case SRV_STATUS_FULL: |
| 1624 | /* The server has reached its maxqueue limit. Either PR_O_REDISP is set |
| 1625 | * and we can redispatch to another server, or it is not and we return |
| 1626 | * 503. This only makes sense in DIRECT mode however, because normal LB |
| 1627 | * algorithms would never select such a server, and hash algorithms |
Willy Tarreau | f1fd9dc | 2014-04-24 20:47:57 +0200 | [diff] [blame] | 1628 | * 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] | 1629 | * in this case. |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1630 | */ |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1631 | if (((s->flags & (SF_DIRECT|SF_FORCE_PRST)) == SF_DIRECT) && |
Willy Tarreau | f1fd9dc | 2014-04-24 20:47:57 +0200 | [diff] [blame] | 1632 | (s->be->options & PR_O_REDISP)) { |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1633 | s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1634 | goto redispatch; |
| 1635 | } |
| 1636 | |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1637 | if (!s->si[1].err_type) { |
| 1638 | s->si[1].err_type = SI_ET_QUEUE_ERR; |
Willy Tarreau | fa7e102 | 2008-10-19 07:30:41 +0200 | [diff] [blame] | 1639 | } |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1640 | |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1641 | _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1); |
| 1642 | _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1); |
Willy Tarreau | 7c669d7 | 2008-06-20 15:04:11 +0200 | [diff] [blame] | 1643 | return 1; |
| 1644 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1645 | case SRV_STATUS_NOSRV: |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1646 | /* note: it is guaranteed that srv == NULL here */ |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1647 | if (!s->si[1].err_type) { |
| 1648 | s->si[1].err_type = SI_ET_CONN_ERR; |
Willy Tarreau | fa7e102 | 2008-10-19 07:30:41 +0200 | [diff] [blame] | 1649 | } |
Krzysztof Piotr Oledzki | 5a329cf | 2008-02-22 03:50:19 +0100 | [diff] [blame] | 1650 | |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1651 | _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1652 | return 1; |
| 1653 | |
| 1654 | case SRV_STATUS_QUEUED: |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1655 | s->si[1].exp = tick_add_ifset(now_ms, s->be->timeout.queue); |
| 1656 | s->si[1].state = SI_ST_QUE; |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1657 | /* do nothing else and do not wake any other stream up */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1658 | return 1; |
| 1659 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1660 | case SRV_STATUS_INTERNAL: |
| 1661 | default: |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1662 | if (!s->si[1].err_type) { |
| 1663 | s->si[1].err_type = SI_ET_CONN_OTHER; |
Willy Tarreau | fa7e102 | 2008-10-19 07:30:41 +0200 | [diff] [blame] | 1664 | } |
| 1665 | |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1666 | if (srv) |
| 1667 | srv_inc_sess_ctr(srv); |
| 1668 | if (srv) |
Bhaskar Maddala | a20cb85 | 2014-02-03 16:26:46 -0500 | [diff] [blame] | 1669 | srv_set_sess_last(srv); |
| 1670 | if (srv) |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1671 | _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1); |
| 1672 | _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1673 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1674 | /* release other streams waiting for this server */ |
Willy Tarreau | f1fd9dc | 2014-04-24 20:47:57 +0200 | [diff] [blame] | 1675 | if (may_dequeue_tasks(srv, s->be)) |
Willy Tarreau | 827aee9 | 2011-03-10 16:55:02 +0100 | [diff] [blame] | 1676 | process_srv_queue(srv); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1677 | return 1; |
| 1678 | } |
| 1679 | /* if we get here, it's because we got SRV_STATUS_OK, which also |
| 1680 | * means that the connection has not been queued. |
| 1681 | */ |
| 1682 | return 0; |
| 1683 | } |
| 1684 | |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1685 | /* sends a log message when a backend goes down, and also sets last |
| 1686 | * change date. |
| 1687 | */ |
| 1688 | void set_backend_down(struct proxy *be) |
| 1689 | { |
| 1690 | be->last_change = now.tv_sec; |
Olivier Houchard | 237f781 | 2019-03-08 18:49:07 +0100 | [diff] [blame] | 1691 | _HA_ATOMIC_ADD(&be->down_trans, 1); |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1692 | |
Willy Tarreau | 6fb8dc1 | 2016-11-03 19:42:36 +0100 | [diff] [blame] | 1693 | if (!(global.mode & MODE_STARTING)) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1694 | 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] | 1695 | send_log(be, LOG_EMERG, "%s %s has no server available!\n", proxy_type_str(be), be->id); |
| 1696 | } |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1697 | } |
| 1698 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1699 | /* Apply RDP cookie persistence to the current stream. For this, the function |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1700 | * tries to extract an RDP cookie from the request buffer, and look for the |
| 1701 | * 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] | 1702 | * stream. This always returns 1, and the analyser removes itself from the |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1703 | * list. Nothing is performed if a server was already assigned. |
| 1704 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1705 | 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] | 1706 | { |
| 1707 | struct proxy *px = s->be; |
| 1708 | int ret; |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 1709 | struct sample smp; |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1710 | struct server *srv = px->srv; |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 1711 | uint16_t port; |
| 1712 | uint32_t addr; |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1713 | char *p; |
| 1714 | |
Christopher Faulet | 4507351 | 2018-07-20 10:16:29 +0200 | [diff] [blame] | 1715 | DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n", |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1716 | now_ms, __FUNCTION__, |
| 1717 | s, |
| 1718 | req, |
| 1719 | req->rex, req->wex, |
| 1720 | req->flags, |
Christopher Faulet | 4507351 | 2018-07-20 10:16:29 +0200 | [diff] [blame] | 1721 | ci_data(req), |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1722 | req->analysers); |
| 1723 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1724 | if (s->flags & SF_ASSIGNED) |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1725 | goto no_cookie; |
| 1726 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 1727 | memset(&smp, 0, sizeof(smp)); |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1728 | |
Willy Tarreau | cadd8c9 | 2013-07-22 18:09:52 +0200 | [diff] [blame] | 1729 | 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] | 1730 | 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] | 1731 | goto no_cookie; |
| 1732 | |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 1733 | /* Considering an rdp cookie detected using acl, str ended with <cr><lf> and should return. |
| 1734 | * The cookie format is <ip> "." <port> where "ip" is the integer corresponding to the |
| 1735 | * server's IP address in network order, and "port" is the integer corresponding to the |
| 1736 | * server's port in network order. Comments please Emeric. |
| 1737 | */ |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1738 | addr = strtoul(smp.data.u.str.area, &p, 10); |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1739 | if (*p != '.') |
| 1740 | goto no_cookie; |
| 1741 | p++; |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 1742 | |
| 1743 | port = ntohs(strtoul(p, &p, 10)); |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1744 | if (*p != '.') |
| 1745 | goto no_cookie; |
| 1746 | |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 1747 | s->target = NULL; |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1748 | while (srv) { |
Willy Tarreau | 28e9d06 | 2014-05-09 22:47:50 +0200 | [diff] [blame] | 1749 | if (srv->addr.ss_family == AF_INET && |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 1750 | port == srv->svc_port && |
| 1751 | addr == ((struct sockaddr_in *)&srv->addr)->sin_addr.s_addr) { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1752 | if ((srv->cur_state != SRV_ST_STOPPED) || (px->options & PR_O_PERSIST)) { |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1753 | /* we found the server and it is usable */ |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1754 | s->flags |= SF_DIRECT | SF_ASSIGNED; |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 1755 | s->target = &srv->obj_type; |
Willy Tarreau | 44b90cc | 2010-05-24 20:27:29 +0200 | [diff] [blame] | 1756 | break; |
| 1757 | } |
| 1758 | } |
| 1759 | srv = srv->next; |
| 1760 | } |
| 1761 | |
| 1762 | no_cookie: |
| 1763 | req->analysers &= ~an_bit; |
| 1764 | req->analyse_exp = TICK_ETERNITY; |
| 1765 | return 1; |
| 1766 | } |
| 1767 | |
Krzysztof Oledzki | 8513094 | 2007-10-22 16:21:10 +0200 | [diff] [blame] | 1768 | int be_downtime(struct proxy *px) { |
Willy Tarreau | b625a08 | 2007-11-26 01:15:43 +0100 | [diff] [blame] | 1769 | 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] | 1770 | return px->down_time; |
| 1771 | |
| 1772 | return now.tv_sec - px->last_change + px->down_time; |
| 1773 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1774 | |
Krzysztof Piotr Oledzki | 15514c2 | 2010-01-04 16:03:09 +0100 | [diff] [blame] | 1775 | /* |
| 1776 | * This function returns a string containing the balancing |
| 1777 | * mode of the proxy in a format suitable for stats. |
| 1778 | */ |
| 1779 | |
| 1780 | const char *backend_lb_algo_str(int algo) { |
| 1781 | |
| 1782 | if (algo == BE_LB_ALGO_RR) |
| 1783 | return "roundrobin"; |
| 1784 | else if (algo == BE_LB_ALGO_SRR) |
| 1785 | return "static-rr"; |
Willy Tarreau | f09c660 | 2012-02-13 17:12:08 +0100 | [diff] [blame] | 1786 | else if (algo == BE_LB_ALGO_FAS) |
| 1787 | return "first"; |
Krzysztof Piotr Oledzki | 15514c2 | 2010-01-04 16:03:09 +0100 | [diff] [blame] | 1788 | else if (algo == BE_LB_ALGO_LC) |
| 1789 | return "leastconn"; |
| 1790 | else if (algo == BE_LB_ALGO_SH) |
| 1791 | return "source"; |
| 1792 | else if (algo == BE_LB_ALGO_UH) |
| 1793 | return "uri"; |
| 1794 | else if (algo == BE_LB_ALGO_PH) |
| 1795 | return "url_param"; |
| 1796 | else if (algo == BE_LB_ALGO_HH) |
| 1797 | return "hdr"; |
| 1798 | else if (algo == BE_LB_ALGO_RCH) |
| 1799 | return "rdp-cookie"; |
Willy Tarreau | b3e111b | 2016-11-26 15:52:04 +0100 | [diff] [blame] | 1800 | else if (algo == BE_LB_ALGO_NONE) |
| 1801 | return "none"; |
Krzysztof Piotr Oledzki | 15514c2 | 2010-01-04 16:03:09 +0100 | [diff] [blame] | 1802 | else |
Willy Tarreau | b3e111b | 2016-11-26 15:52:04 +0100 | [diff] [blame] | 1803 | return "unknown"; |
Krzysztof Piotr Oledzki | 15514c2 | 2010-01-04 16:03:09 +0100 | [diff] [blame] | 1804 | } |
| 1805 | |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 1806 | /* This function parses a "balance" statement in a backend section describing |
| 1807 | * <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] | 1808 | * returns -1, it will write an error message into the <err> buffer which will |
| 1809 | * automatically be allocated and must be passed as NULL. The trailing '\n' |
| 1810 | * will not be written. The function must be called with <args> pointing to the |
| 1811 | * first word after "balance". |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 1812 | */ |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1813 | int backend_parse_balance(const char **args, char **err, struct proxy *curproxy) |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 1814 | { |
| 1815 | if (!*(args[0])) { |
| 1816 | /* if no option is set, use round-robin by default */ |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 1817 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1818 | curproxy->lbprm.algo |= BE_LB_ALGO_RR; |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 1819 | return 0; |
| 1820 | } |
| 1821 | |
| 1822 | if (!strcmp(args[0], "roundrobin")) { |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 1823 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1824 | curproxy->lbprm.algo |= BE_LB_ALGO_RR; |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 1825 | } |
Willy Tarreau | 9757a38 | 2009-10-03 12:56:50 +0200 | [diff] [blame] | 1826 | else if (!strcmp(args[0], "static-rr")) { |
| 1827 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1828 | curproxy->lbprm.algo |= BE_LB_ALGO_SRR; |
| 1829 | } |
Willy Tarreau | f09c660 | 2012-02-13 17:12:08 +0100 | [diff] [blame] | 1830 | else if (!strcmp(args[0], "first")) { |
| 1831 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1832 | curproxy->lbprm.algo |= BE_LB_ALGO_FAS; |
| 1833 | } |
Willy Tarreau | 5140623 | 2008-03-10 22:04:20 +0100 | [diff] [blame] | 1834 | else if (!strcmp(args[0], "leastconn")) { |
| 1835 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1836 | curproxy->lbprm.algo |= BE_LB_ALGO_LC; |
| 1837 | } |
Willy Tarreau | 21c741a | 2019-01-14 18:14:27 +0100 | [diff] [blame] | 1838 | else if (!strncmp(args[0], "random", 6)) { |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 1839 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1840 | curproxy->lbprm.algo |= BE_LB_ALGO_RND; |
Willy Tarreau | 21c741a | 2019-01-14 18:14:27 +0100 | [diff] [blame] | 1841 | curproxy->lbprm.arg_opt1 = 2; |
| 1842 | |
| 1843 | if (*(args[0] + 6) == '(' && *(args[0] + 7) != ')') { /* number of draws */ |
| 1844 | const char *beg; |
| 1845 | char *end; |
| 1846 | |
| 1847 | beg = args[0] + 7; |
| 1848 | curproxy->lbprm.arg_opt1 = strtol(beg, &end, 0); |
| 1849 | |
| 1850 | if (*end != ')') { |
| 1851 | if (!*end) |
| 1852 | memprintf(err, "random : missing closing parenthesis."); |
| 1853 | else |
| 1854 | memprintf(err, "random : unexpected character '%c' after argument.", *end); |
| 1855 | return -1; |
| 1856 | } |
| 1857 | |
| 1858 | if (curproxy->lbprm.arg_opt1 < 1) { |
| 1859 | memprintf(err, "random : number of draws must be at least 1."); |
| 1860 | return -1; |
| 1861 | } |
| 1862 | } |
Willy Tarreau | 760e81d | 2018-05-03 07:20:40 +0200 | [diff] [blame] | 1863 | } |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 1864 | else if (!strcmp(args[0], "source")) { |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 1865 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1866 | curproxy->lbprm.algo |= BE_LB_ALGO_SH; |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 1867 | } |
| 1868 | else if (!strcmp(args[0], "uri")) { |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 1869 | int arg = 1; |
| 1870 | |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 1871 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1872 | curproxy->lbprm.algo |= BE_LB_ALGO_UH; |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 1873 | curproxy->lbprm.arg_opt1 = 0; // "whole" |
| 1874 | curproxy->lbprm.arg_opt2 = 0; // "len" |
| 1875 | curproxy->lbprm.arg_opt3 = 0; // "depth" |
Oskar Stolc | 8dc4184 | 2012-05-19 10:19:54 +0100 | [diff] [blame] | 1876 | |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 1877 | while (*args[arg]) { |
| 1878 | if (!strcmp(args[arg], "len")) { |
| 1879 | if (!*args[arg+1] || (atoi(args[arg+1]) <= 0)) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1880 | 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] | 1881 | return -1; |
| 1882 | } |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 1883 | curproxy->lbprm.arg_opt2 = atoi(args[arg+1]); |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 1884 | arg += 2; |
| 1885 | } |
| 1886 | else if (!strcmp(args[arg], "depth")) { |
| 1887 | if (!*args[arg+1] || (atoi(args[arg+1]) <= 0)) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1888 | 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] | 1889 | return -1; |
| 1890 | } |
| 1891 | /* hint: we store the position of the ending '/' (depth+1) so |
| 1892 | * that we avoid a comparison while computing the hash. |
| 1893 | */ |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 1894 | curproxy->lbprm.arg_opt3 = atoi(args[arg+1]) + 1; |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 1895 | arg += 2; |
| 1896 | } |
Oskar Stolc | 8dc4184 | 2012-05-19 10:19:54 +0100 | [diff] [blame] | 1897 | else if (!strcmp(args[arg], "whole")) { |
Willy Tarreau | a9a7249 | 2019-01-14 16:14:15 +0100 | [diff] [blame] | 1898 | curproxy->lbprm.arg_opt1 = 1; |
Oskar Stolc | 8dc4184 | 2012-05-19 10:19:54 +0100 | [diff] [blame] | 1899 | arg += 1; |
| 1900 | } |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 1901 | else { |
Oskar Stolc | 8dc4184 | 2012-05-19 10:19:54 +0100 | [diff] [blame] | 1902 | 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] | 1903 | return -1; |
| 1904 | } |
| 1905 | } |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 1906 | } |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 1907 | else if (!strcmp(args[0], "url_param")) { |
| 1908 | if (!*args[1]) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1909 | memprintf(err, "%s requires an URL parameter name.", args[0]); |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 1910 | return -1; |
| 1911 | } |
Willy Tarreau | 3168223 | 2007-11-29 15:38:04 +0100 | [diff] [blame] | 1912 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1913 | curproxy->lbprm.algo |= BE_LB_ALGO_PH; |
Willy Tarreau | a534fea | 2008-08-03 12:19:50 +0200 | [diff] [blame] | 1914 | |
Willy Tarreau | 4c03d1c | 2019-01-14 15:23:54 +0100 | [diff] [blame] | 1915 | free(curproxy->lbprm.arg_str); |
| 1916 | curproxy->lbprm.arg_str = strdup(args[1]); |
| 1917 | curproxy->lbprm.arg_len = strlen(args[1]); |
Marek Majkowski | 9c30fc1 | 2008-04-27 23:25:55 +0200 | [diff] [blame] | 1918 | if (*args[2]) { |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 1919 | if (strcmp(args[2], "check_post")) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1920 | 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] | 1921 | return -1; |
| 1922 | } |
matt.farnsworth@nokia.com | 1c2ab96 | 2008-04-14 20:47:37 +0200 | [diff] [blame] | 1923 | } |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 1924 | } |
| 1925 | else if (!strncmp(args[0], "hdr(", 4)) { |
| 1926 | const char *beg, *end; |
| 1927 | |
| 1928 | beg = args[0] + 4; |
| 1929 | end = strchr(beg, ')'); |
| 1930 | |
| 1931 | if (!end || end == beg) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1932 | memprintf(err, "hdr requires an http header field name."); |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 1933 | return -1; |
| 1934 | } |
| 1935 | |
| 1936 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1937 | curproxy->lbprm.algo |= BE_LB_ALGO_HH; |
| 1938 | |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 1939 | free(curproxy->lbprm.arg_str); |
| 1940 | curproxy->lbprm.arg_len = end - beg; |
| 1941 | curproxy->lbprm.arg_str = my_strndup(beg, end - beg); |
Willy Tarreau | 9fed858 | 2019-01-14 16:04:54 +0100 | [diff] [blame] | 1942 | curproxy->lbprm.arg_opt1 = 0; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 1943 | |
| 1944 | if (*args[1]) { |
| 1945 | if (strcmp(args[1], "use_domain_only")) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1946 | 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] | 1947 | return -1; |
| 1948 | } |
Willy Tarreau | 9fed858 | 2019-01-14 16:04:54 +0100 | [diff] [blame] | 1949 | curproxy->lbprm.arg_opt1 = 1; |
Benoit | affb481 | 2009-03-25 13:02:10 +0100 | [diff] [blame] | 1950 | } |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 1951 | } |
| 1952 | else if (!strncmp(args[0], "rdp-cookie", 10)) { |
| 1953 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 1954 | curproxy->lbprm.algo |= BE_LB_ALGO_RCH; |
| 1955 | |
| 1956 | if ( *(args[0] + 10 ) == '(' ) { /* cookie name */ |
| 1957 | const char *beg, *end; |
| 1958 | |
| 1959 | beg = args[0] + 11; |
| 1960 | end = strchr(beg, ')'); |
| 1961 | |
| 1962 | if (!end || end == beg) { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1963 | memprintf(err, "rdp-cookie : missing cookie name."); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 1964 | return -1; |
| 1965 | } |
| 1966 | |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 1967 | free(curproxy->lbprm.arg_str); |
| 1968 | curproxy->lbprm.arg_str = my_strndup(beg, end - beg); |
| 1969 | curproxy->lbprm.arg_len = end - beg; |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 1970 | } |
| 1971 | else if ( *(args[0] + 10 ) == '\0' ) { /* default cookie name 'mstshash' */ |
Willy Tarreau | 484ff07 | 2019-01-14 15:28:53 +0100 | [diff] [blame] | 1972 | free(curproxy->lbprm.arg_str); |
| 1973 | curproxy->lbprm.arg_str = strdup("mstshash"); |
| 1974 | curproxy->lbprm.arg_len = strlen(curproxy->lbprm.arg_str); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 1975 | } |
| 1976 | else { /* syntax */ |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1977 | memprintf(err, "rdp-cookie : missing cookie name."); |
Emeric Brun | 736aa23 | 2009-06-30 17:56:00 +0200 | [diff] [blame] | 1978 | return -1; |
| 1979 | } |
Willy Tarreau | 0173280 | 2007-11-01 22:48:15 +0100 | [diff] [blame] | 1980 | } |
Willy Tarreau | a0cbda6 | 2007-11-01 21:39:54 +0100 | [diff] [blame] | 1981 | else { |
Willy Tarreau | a93c74b | 2012-05-08 18:14:39 +0200 | [diff] [blame] | 1982 | 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] | 1983 | return -1; |
| 1984 | } |
| 1985 | return 0; |
| 1986 | } |
| 1987 | |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 1988 | |
| 1989 | /************************************************************************/ |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 1990 | /* All supported sample and ACL keywords must be declared here. */ |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 1991 | /************************************************************************/ |
| 1992 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 1993 | /* set temp integer to the number of enabled servers on the proxy. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 1994 | * 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] | 1995 | * undefined behaviour. |
| 1996 | */ |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 1997 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 1998 | 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] | 1999 | { |
Thierry FOURNIER | 0a9a2b8 | 2015-05-11 15:20:49 +0200 | [diff] [blame] | 2000 | struct proxy *px; |
| 2001 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2002 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2003 | smp->data.type = SMP_T_SINT; |
Willy Tarreau | 24e32d8 | 2012-04-23 23:55:44 +0200 | [diff] [blame] | 2004 | px = args->data.prx; |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2005 | |
Nenad Merdanovic | 2754fbc | 2017-03-12 21:56:56 +0100 | [diff] [blame] | 2006 | smp->data.u.sint = be_usable_srv(px); |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2007 | |
| 2008 | return 1; |
| 2009 | } |
| 2010 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2011 | /* report in smp->flags a success or failure depending on the designated |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2012 | * 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] | 2013 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2014 | * undefined behaviour. |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2015 | */ |
| 2016 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2017 | 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] | 2018 | { |
Willy Tarreau | 24e32d8 | 2012-04-23 23:55:44 +0200 | [diff] [blame] | 2019 | struct server *srv = args->data.srv; |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2020 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2021 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2022 | smp->data.type = SMP_T_BOOL; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 2023 | if (!(srv->cur_admin & SRV_ADMF_MAINT) && |
| 2024 | (!(srv->check.state & CHK_ST_CONFIGURED) || (srv->cur_state != SRV_ST_STOPPED))) |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2025 | smp->data.u.sint = 1; |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2026 | else |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2027 | smp->data.u.sint = 0; |
Willy Tarreau | 0b1cd94 | 2010-05-16 22:18:27 +0200 | [diff] [blame] | 2028 | return 1; |
| 2029 | } |
| 2030 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2031 | /* set temp integer to the number of enabled servers on the proxy. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2032 | * 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] | 2033 | * undefined behaviour. |
| 2034 | */ |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2035 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2036 | 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] | 2037 | { |
| 2038 | struct server *iterator; |
Willy Tarreau | d28c353 | 2012-04-19 19:28:33 +0200 | [diff] [blame] | 2039 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2040 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2041 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2042 | smp->data.u.sint = 0; |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2043 | |
Willy Tarreau | 24e32d8 | 2012-04-23 23:55:44 +0200 | [diff] [blame] | 2044 | for (iterator = args->data.prx->srv; iterator; iterator = iterator->next) { |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 2045 | if (iterator->cur_state == SRV_ST_STOPPED) |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2046 | continue; |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2047 | |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2048 | if (iterator->maxconn == 0 || iterator->maxqueue == 0) { |
Willy Tarreau | a5e3756 | 2011-12-16 17:06:15 +0100 | [diff] [blame] | 2049 | /* configuration is stupid */ |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2050 | smp->data.u.sint = -1; /* FIXME: stupid value! */ |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2051 | return 1; |
| 2052 | } |
| 2053 | |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2054 | smp->data.u.sint += (iterator->maxconn - iterator->cur_sess) |
Willy Tarreau | 422aa07 | 2012-04-20 20:49:27 +0200 | [diff] [blame] | 2055 | + (iterator->maxqueue - iterator->nbpend); |
Jeffrey 'jf' Lim | 5051d7b | 2008-09-04 01:03:03 +0800 | [diff] [blame] | 2056 | } |
| 2057 | |
| 2058 | return 1; |
| 2059 | } |
| 2060 | |
Willy Tarreau | a5e3756 | 2011-12-16 17:06:15 +0100 | [diff] [blame] | 2061 | /* set temp integer to the id of the backend */ |
Hervé COMMOWICK | 35ed801 | 2010-12-15 14:04:51 +0100 | [diff] [blame] | 2062 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2063 | 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] | 2064 | { |
Willy Tarreau | be508f1 | 2016-03-10 11:47:01 +0100 | [diff] [blame] | 2065 | if (!smp->strm) |
| 2066 | return 0; |
| 2067 | |
Willy Tarreau | f853c46 | 2012-04-23 18:53:56 +0200 | [diff] [blame] | 2068 | smp->flags = SMP_F_VOL_TXN; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2069 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2070 | smp->data.u.sint = smp->strm->be->uuid; |
Hervé COMMOWICK | 35ed801 | 2010-12-15 14:04:51 +0100 | [diff] [blame] | 2071 | return 1; |
| 2072 | } |
| 2073 | |
Marcin Deranek | d2471c2 | 2016-12-12 14:08:05 +0100 | [diff] [blame] | 2074 | /* set string to the name of the backend */ |
| 2075 | static int |
| 2076 | smp_fetch_be_name(const struct arg *args, struct sample *smp, const char *kw, void *private) |
| 2077 | { |
| 2078 | if (!smp->strm) |
| 2079 | return 0; |
| 2080 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2081 | smp->data.u.str.area = (char *)smp->strm->be->id; |
| 2082 | if (!smp->data.u.str.area) |
Marcin Deranek | d2471c2 | 2016-12-12 14:08:05 +0100 | [diff] [blame] | 2083 | return 0; |
| 2084 | |
| 2085 | smp->data.type = SMP_T_STR; |
| 2086 | smp->flags = SMP_F_CONST; |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2087 | smp->data.u.str.data = strlen(smp->data.u.str.area); |
Marcin Deranek | d2471c2 | 2016-12-12 14:08:05 +0100 | [diff] [blame] | 2088 | |
| 2089 | return 1; |
| 2090 | } |
| 2091 | |
Willy Tarreau | a5e3756 | 2011-12-16 17:06:15 +0100 | [diff] [blame] | 2092 | /* set temp integer to the id of the server */ |
Hervé COMMOWICK | 35ed801 | 2010-12-15 14:04:51 +0100 | [diff] [blame] | 2093 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2094 | 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] | 2095 | { |
Willy Tarreau | be508f1 | 2016-03-10 11:47:01 +0100 | [diff] [blame] | 2096 | if (!smp->strm) |
| 2097 | return 0; |
| 2098 | |
Thierry FOURNIER | 0a9a2b8 | 2015-05-11 15:20:49 +0200 | [diff] [blame] | 2099 | if (!objt_server(smp->strm->target)) |
Willy Tarreau | 17af419 | 2011-02-23 14:27:06 +0100 | [diff] [blame] | 2100 | return 0; |
| 2101 | |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2102 | smp->data.type = SMP_T_SINT; |
Willy Tarreau | 1e582e5 | 2018-09-20 11:29:28 +0200 | [diff] [blame] | 2103 | smp->data.u.sint = __objt_server(smp->strm->target)->puid; |
Hervé COMMOWICK | 35ed801 | 2010-12-15 14:04:51 +0100 | [diff] [blame] | 2104 | |
| 2105 | return 1; |
| 2106 | } |
| 2107 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2108 | /* 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] | 2109 | * 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] | 2110 | * undefined behaviour. |
| 2111 | */ |
Willy Tarreau | 079ff0a | 2009-03-05 21:34:28 +0100 | [diff] [blame] | 2112 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2113 | 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] | 2114 | { |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2115 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2116 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2117 | 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] | 2118 | return 1; |
| 2119 | } |
| 2120 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2121 | /* set temp integer to the number of concurrent connections on the backend. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2122 | * 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] | 2123 | * undefined behaviour. |
| 2124 | */ |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2125 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2126 | 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] | 2127 | { |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2128 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2129 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2130 | smp->data.u.sint = args->data.prx->beconn; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2131 | return 1; |
| 2132 | } |
| 2133 | |
Patrick Hemmer | 4cdf3ab | 2018-06-14 17:10:27 -0400 | [diff] [blame] | 2134 | /* set temp integer to the number of available connections across available |
| 2135 | * servers on the backend. |
| 2136 | * Accepts exactly 1 argument. Argument is a backend, other types will lead to |
| 2137 | * undefined behaviour. |
| 2138 | */ |
| 2139 | static int |
| 2140 | smp_fetch_be_conn_free(const struct arg *args, struct sample *smp, const char *kw, void *private) |
| 2141 | { |
| 2142 | struct server *iterator; |
| 2143 | struct proxy *px; |
| 2144 | unsigned int maxconn; |
| 2145 | |
| 2146 | smp->flags = SMP_F_VOL_TEST; |
| 2147 | smp->data.type = SMP_T_SINT; |
| 2148 | smp->data.u.sint = 0; |
| 2149 | |
| 2150 | for (iterator = args->data.prx->srv; iterator; iterator = iterator->next) { |
| 2151 | if (iterator->cur_state == SRV_ST_STOPPED) |
| 2152 | continue; |
| 2153 | |
| 2154 | px = iterator->proxy; |
| 2155 | if (!srv_currently_usable(iterator) || |
| 2156 | ((iterator->flags & SRV_F_BACKUP) && |
| 2157 | (px->srv_act || (iterator != px->lbprm.fbck && !(px->options & PR_O_USE_ALL_BK))))) |
| 2158 | continue; |
| 2159 | |
| 2160 | if (iterator->maxconn == 0) { |
| 2161 | /* one active server is unlimited, return -1 */ |
| 2162 | smp->data.u.sint = -1; |
| 2163 | return 1; |
| 2164 | } |
| 2165 | |
| 2166 | maxconn = srv_dynamic_maxconn(iterator); |
| 2167 | if (maxconn > iterator->cur_sess) |
| 2168 | smp->data.u.sint += maxconn - iterator->cur_sess; |
| 2169 | } |
| 2170 | |
| 2171 | return 1; |
| 2172 | } |
| 2173 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2174 | /* 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] | 2175 | * 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] | 2176 | * undefined behaviour. |
| 2177 | */ |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2178 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2179 | 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] | 2180 | { |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2181 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2182 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2183 | smp->data.u.sint = args->data.prx->totpend; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2184 | return 1; |
| 2185 | } |
| 2186 | |
Willy Tarreau | a5e3756 | 2011-12-16 17:06:15 +0100 | [diff] [blame] | 2187 | /* 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] | 2188 | * by the number of running servers and rounded up. If there is no running |
| 2189 | * server, we return twice the total, just as if we had half a running server. |
| 2190 | * This is more or less correct anyway, since we expect the last server to come |
| 2191 | * back soon. |
Willy Tarreau | 0146c2e | 2012-04-20 11:37:56 +0200 | [diff] [blame] | 2192 | * 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] | 2193 | * undefined behaviour. |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2194 | */ |
| 2195 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2196 | 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] | 2197 | { |
| 2198 | int nbsrv; |
Thierry FOURNIER | 0a9a2b8 | 2015-05-11 15:20:49 +0200 | [diff] [blame] | 2199 | struct proxy *px; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2200 | |
Willy Tarreau | 3740635 | 2012-04-23 16:16:37 +0200 | [diff] [blame] | 2201 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2202 | smp->data.type = SMP_T_SINT; |
Willy Tarreau | 24e32d8 | 2012-04-23 23:55:44 +0200 | [diff] [blame] | 2203 | px = args->data.prx; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2204 | |
Nenad Merdanovic | 2754fbc | 2017-03-12 21:56:56 +0100 | [diff] [blame] | 2205 | nbsrv = be_usable_srv(px); |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2206 | |
| 2207 | if (nbsrv > 0) |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2208 | smp->data.u.sint = (px->totpend + nbsrv - 1) / nbsrv; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2209 | else |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2210 | smp->data.u.sint = px->totpend * 2; |
Willy Tarreau | a36af91 | 2009-10-10 12:02:45 +0200 | [diff] [blame] | 2211 | |
| 2212 | return 1; |
| 2213 | } |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2214 | |
Willy Tarreau | 34db108 | 2012-04-19 17:16:54 +0200 | [diff] [blame] | 2215 | /* set temp integer to the number of concurrent connections on the server in the backend. |
| 2216 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2217 | * undefined behaviour. |
| 2218 | */ |
Hervé COMMOWICK | daa824e | 2011-08-05 12:09:44 +0200 | [diff] [blame] | 2219 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2220 | 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] | 2221 | { |
Willy Tarreau | f853c46 | 2012-04-23 18:53:56 +0200 | [diff] [blame] | 2222 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2223 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2224 | smp->data.u.sint = args->data.srv->cur_sess; |
Hervé COMMOWICK | daa824e | 2011-08-05 12:09:44 +0200 | [diff] [blame] | 2225 | return 1; |
| 2226 | } |
| 2227 | |
Patrick Hemmer | 155e93e | 2018-06-14 18:01:35 -0400 | [diff] [blame] | 2228 | /* set temp integer to the number of available connections on the server in the backend. |
| 2229 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2230 | * undefined behaviour. |
| 2231 | */ |
| 2232 | static int |
| 2233 | smp_fetch_srv_conn_free(const struct arg *args, struct sample *smp, const char *kw, void *private) |
| 2234 | { |
| 2235 | unsigned int maxconn; |
| 2236 | |
| 2237 | smp->flags = SMP_F_VOL_TEST; |
| 2238 | smp->data.type = SMP_T_SINT; |
| 2239 | |
| 2240 | if (args->data.srv->maxconn == 0) { |
| 2241 | /* one active server is unlimited, return -1 */ |
| 2242 | smp->data.u.sint = -1; |
| 2243 | return 1; |
| 2244 | } |
| 2245 | |
| 2246 | maxconn = srv_dynamic_maxconn(args->data.srv); |
| 2247 | if (maxconn > args->data.srv->cur_sess) |
| 2248 | smp->data.u.sint = maxconn - args->data.srv->cur_sess; |
| 2249 | else |
| 2250 | smp->data.u.sint = 0; |
| 2251 | |
| 2252 | return 1; |
| 2253 | } |
| 2254 | |
Willy Tarreau | ff2b7af | 2017-10-13 11:46:26 +0200 | [diff] [blame] | 2255 | /* set temp integer to the number of connections pending in the server's queue. |
| 2256 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2257 | * undefined behaviour. |
| 2258 | */ |
| 2259 | static int |
| 2260 | smp_fetch_srv_queue(const struct arg *args, struct sample *smp, const char *kw, void *private) |
| 2261 | { |
| 2262 | smp->flags = SMP_F_VOL_TEST; |
| 2263 | smp->data.type = SMP_T_SINT; |
| 2264 | smp->data.u.sint = args->data.srv->nbpend; |
| 2265 | return 1; |
| 2266 | } |
| 2267 | |
Tait Clarridge | 7896d52 | 2012-12-05 21:39:31 -0500 | [diff] [blame] | 2268 | /* set temp integer to the number of enabled servers on the proxy. |
| 2269 | * Accepts exactly 1 argument. Argument is a server, other types will lead to |
| 2270 | * undefined behaviour. |
| 2271 | */ |
| 2272 | static int |
Thierry FOURNIER | 0786d05 | 2015-05-11 15:42:45 +0200 | [diff] [blame] | 2273 | 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] | 2274 | { |
| 2275 | smp->flags = SMP_F_VOL_TEST; |
Thierry FOURNIER | 8c542ca | 2015-08-19 09:00:18 +0200 | [diff] [blame] | 2276 | smp->data.type = SMP_T_SINT; |
Thierry FOURNIER | 136f9d3 | 2015-08-19 09:07:19 +0200 | [diff] [blame] | 2277 | 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] | 2278 | return 1; |
| 2279 | } |
| 2280 | |
Nenad Merdanovic | b7e7c47 | 2017-03-12 21:56:55 +0100 | [diff] [blame] | 2281 | static int sample_conv_nbsrv(const struct arg *args, struct sample *smp, void *private) |
| 2282 | { |
| 2283 | |
| 2284 | struct proxy *px; |
| 2285 | |
| 2286 | if (!smp_make_safe(smp)) |
| 2287 | return 0; |
| 2288 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2289 | 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] | 2290 | if (!px) |
| 2291 | return 0; |
| 2292 | |
| 2293 | smp->data.type = SMP_T_SINT; |
| 2294 | smp->data.u.sint = be_usable_srv(px); |
| 2295 | |
| 2296 | return 1; |
| 2297 | } |
| 2298 | |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 2299 | |
| 2300 | /* Note: must not be declared <const> as its list will be overwritten. |
| 2301 | * Please take care of keeping this list alphabetically sorted. |
| 2302 | */ |
Willy Tarreau | dc13c11 | 2013-06-21 23:16:39 +0200 | [diff] [blame] | 2303 | static struct sample_fetch_kw_list smp_kws = {ILH, { |
Thierry FOURNIER | 07ee64e | 2015-07-06 23:43:03 +0200 | [diff] [blame] | 2304 | { "avg_queue", smp_fetch_avg_queue_size, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2305 | { "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] | 2306 | { "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] | 2307 | { "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] | 2308 | { "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] | 2309 | { "be_sess_rate", smp_fetch_be_sess_rate, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2310 | { "connslots", smp_fetch_connslots, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2311 | { "nbsrv", smp_fetch_nbsrv, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2312 | { "queue", smp_fetch_queue_size, ARG1(1,BE), NULL, SMP_T_SINT, SMP_USE_INTRN, }, |
| 2313 | { "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] | 2314 | { "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] | 2315 | { "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] | 2316 | { "srv_is_up", smp_fetch_srv_is_up, ARG1(1,SRV), NULL, SMP_T_BOOL, SMP_USE_INTRN, }, |
Willy Tarreau | ff2b7af | 2017-10-13 11:46:26 +0200 | [diff] [blame] | 2317 | { "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] | 2318 | { "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] | 2319 | { /* END */ }, |
| 2320 | }}; |
| 2321 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 2322 | INITCALL1(STG_REGISTER, sample_register_fetches, &smp_kws); |
| 2323 | |
Nenad Merdanovic | b7e7c47 | 2017-03-12 21:56:55 +0100 | [diff] [blame] | 2324 | /* Note: must not be declared <const> as its list will be overwritten */ |
| 2325 | static struct sample_conv_kw_list sample_conv_kws = {ILH, { |
| 2326 | { "nbsrv", sample_conv_nbsrv, 0, NULL, SMP_T_STR, SMP_T_SINT }, |
| 2327 | { /* END */ }, |
| 2328 | }}; |
| 2329 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 2330 | INITCALL1(STG_REGISTER, sample_register_convs, &sample_conv_kws); |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 2331 | |
Willy Tarreau | 61612d4 | 2012-04-19 18:42:05 +0200 | [diff] [blame] | 2332 | /* Note: must not be declared <const> as its list will be overwritten. |
| 2333 | * Please take care of keeping this list alphabetically sorted. |
| 2334 | */ |
Willy Tarreau | dc13c11 | 2013-06-21 23:16:39 +0200 | [diff] [blame] | 2335 | static struct acl_kw_list acl_kws = {ILH, { |
Willy Tarreau | 1a7eca1 | 2013-01-07 22:38:03 +0100 | [diff] [blame] | 2336 | { /* END */ }, |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2337 | }}; |
| 2338 | |
Willy Tarreau | 0108d90 | 2018-11-25 19:14:37 +0100 | [diff] [blame] | 2339 | INITCALL1(STG_REGISTER, acl_register_keywords, &acl_kws); |
Willy Tarreau | a9d3c1e | 2007-11-30 20:48:53 +0100 | [diff] [blame] | 2340 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2341 | /* |
| 2342 | * Local variables: |
| 2343 | * c-indent-level: 8 |
| 2344 | * c-basic-offset: 8 |
| 2345 | * End: |
| 2346 | */ |