Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Proxy variables and functions. |
| 3 | * |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 4 | * Copyright 2000-2009 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 <fcntl.h> |
| 14 | #include <unistd.h> |
Willy Tarreau | c8f24f8 | 2007-11-30 18:38:35 +0100 | [diff] [blame] | 15 | #include <string.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 16 | #include <sys/types.h> |
| 17 | #include <sys/socket.h> |
| 18 | #include <sys/stat.h> |
| 19 | |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 20 | #include <common/defaults.h> |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 21 | #include <common/cfgparse.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 22 | #include <common/compat.h> |
Willy Tarreau | e3ba5f0 | 2006-06-29 18:54:54 +0200 | [diff] [blame] | 23 | #include <common/config.h> |
Willy Tarreau | d740bab | 2007-10-28 11:14:07 +0100 | [diff] [blame] | 24 | #include <common/errors.h> |
Willy Tarreau | 4d2d098 | 2007-05-14 00:39:29 +0200 | [diff] [blame] | 25 | #include <common/memory.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 26 | #include <common/time.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 27 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame^] | 28 | #include <eb32tree.h> |
| 29 | #include <ebistree.h> |
| 30 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 31 | #include <types/global.h> |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 32 | #include <types/obj_type.h> |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 33 | #include <types/peers.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 34 | |
Alexandre Cassen | 87ea548 | 2007-10-11 20:48:58 +0200 | [diff] [blame] | 35 | #include <proto/backend.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 36 | #include <proto/fd.h> |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 37 | #include <proto/hdr_idx.h> |
Willy Tarreau | d1d5454 | 2012-09-12 22:58:11 +0200 | [diff] [blame] | 38 | #include <proto/listener.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 39 | #include <proto/log.h> |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 40 | #include <proto/proto_tcp.h> |
Willy Tarreau | 39e4f62 | 2010-05-31 17:01:36 +0200 | [diff] [blame] | 41 | #include <proto/proto_http.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 42 | #include <proto/proxy.h> |
Willy Tarreau | d0807c3 | 2010-08-27 18:26:11 +0200 | [diff] [blame] | 43 | #include <proto/signal.h> |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 44 | #include <proto/task.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 45 | |
| 46 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 47 | int listeners; /* # of proxy listeners, set by cfgparse */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 48 | struct proxy *proxy = NULL; /* list of all existing proxies */ |
Willy Tarreau | 53fb4ae | 2009-10-04 23:04:08 +0200 | [diff] [blame] | 49 | struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */ |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 50 | struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */ |
Willy Tarreau | 10479e4 | 2010-12-12 14:00:34 +0100 | [diff] [blame] | 51 | unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 52 | |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 53 | /* |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 54 | * This function returns a string containing a name describing capabilities to |
| 55 | * report comprehensible error messages. Specifically, it will return the words |
| 56 | * "frontend", "backend", "ruleset" when appropriate, or "proxy" for all other |
| 57 | * cases including the proxies declared in "listen" mode. |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 58 | */ |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 59 | const char *proxy_cap_str(int cap) |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 60 | { |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 61 | if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) { |
| 62 | if (cap & PR_CAP_FE) |
| 63 | return "frontend"; |
| 64 | else if (cap & PR_CAP_BE) |
| 65 | return "backend"; |
| 66 | else if (cap & PR_CAP_RS) |
| 67 | return "ruleset"; |
| 68 | } |
| 69 | return "proxy"; |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 70 | } |
| 71 | |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 72 | /* |
| 73 | * This function returns a string containing the mode of the proxy in a format |
| 74 | * suitable for error messages. |
| 75 | */ |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 76 | const char *proxy_mode_str(int mode) { |
| 77 | |
| 78 | if (mode == PR_MODE_TCP) |
| 79 | return "tcp"; |
| 80 | else if (mode == PR_MODE_HTTP) |
| 81 | return "http"; |
| 82 | else if (mode == PR_MODE_HEALTH) |
| 83 | return "health"; |
| 84 | else |
| 85 | return "unknown"; |
| 86 | } |
| 87 | |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 88 | /* |
| 89 | * This function scans the list of backends and servers to retrieve the first |
| 90 | * backend and the first server with the given names, and sets them in both |
| 91 | * parameters. It returns zero if either is not found, or non-zero and sets |
| 92 | * the ones it did not found to NULL. If a NULL pointer is passed for the |
| 93 | * backend, only the pointer to the server will be updated. |
| 94 | */ |
| 95 | int get_backend_server(const char *bk_name, const char *sv_name, |
| 96 | struct proxy **bk, struct server **sv) |
| 97 | { |
| 98 | struct proxy *p; |
| 99 | struct server *s; |
Willy Tarreau | cfeaa47 | 2009-10-10 22:33:08 +0200 | [diff] [blame] | 100 | int pid, sid; |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 101 | |
| 102 | *sv = NULL; |
| 103 | |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 104 | pid = -1; |
Willy Tarreau | cfeaa47 | 2009-10-10 22:33:08 +0200 | [diff] [blame] | 105 | if (*bk_name == '#') |
| 106 | pid = atoi(bk_name + 1); |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 107 | sid = -1; |
Willy Tarreau | cfeaa47 | 2009-10-10 22:33:08 +0200 | [diff] [blame] | 108 | if (*sv_name == '#') |
| 109 | sid = atoi(sv_name + 1); |
| 110 | |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 111 | for (p = proxy; p; p = p->next) |
Willy Tarreau | cfeaa47 | 2009-10-10 22:33:08 +0200 | [diff] [blame] | 112 | if ((p->cap & PR_CAP_BE) && |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 113 | ((pid >= 0 && p->uuid == pid) || |
| 114 | (pid < 0 && strcmp(p->id, bk_name) == 0))) |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 115 | break; |
| 116 | if (bk) |
| 117 | *bk = p; |
| 118 | if (!p) |
| 119 | return 0; |
| 120 | |
| 121 | for (s = p->srv; s; s = s->next) |
Willy Tarreau | 4055a10 | 2012-11-15 00:15:18 +0100 | [diff] [blame] | 122 | if ((sid >= 0 && s->puid == sid) || |
| 123 | (sid < 0 && strcmp(s->id, sv_name) == 0)) |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 124 | break; |
| 125 | *sv = s; |
| 126 | if (!s) |
| 127 | return 0; |
| 128 | return 1; |
| 129 | } |
| 130 | |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 131 | /* This function parses a "timeout" statement in a proxy section. It returns |
| 132 | * -1 if there is any error, 1 for a warning, otherwise zero. If it does not |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 133 | * return zero, it will write an error or warning message into a preallocated |
| 134 | * buffer returned at <err>. The trailing is not be written. The function must |
| 135 | * be called with <args> pointing to the first command line word, with <proxy> |
| 136 | * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL. |
| 137 | * As a special case for compatibility with older configs, it also accepts |
| 138 | * "{cli|srv|con}timeout" in args[0]. |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 139 | */ |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 140 | static int proxy_parse_timeout(char **args, int section, struct proxy *proxy, |
Willy Tarreau | 28a47d6 | 2012-09-18 20:02:48 +0200 | [diff] [blame] | 141 | struct proxy *defpx, const char *file, int line, |
| 142 | char **err) |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 143 | { |
| 144 | unsigned timeout; |
| 145 | int retval, cap; |
| 146 | const char *res, *name; |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 147 | int *tv = NULL; |
| 148 | int *td = NULL; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 149 | |
| 150 | retval = 0; |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 151 | |
| 152 | /* simply skip "timeout" but remain compatible with old form */ |
| 153 | if (strcmp(args[0], "timeout") == 0) |
| 154 | args++; |
| 155 | |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 156 | name = args[0]; |
| 157 | if (!strcmp(args[0], "client") || !strcmp(args[0], "clitimeout")) { |
| 158 | name = "client"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 159 | tv = &proxy->timeout.client; |
| 160 | td = &defpx->timeout.client; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 161 | cap = PR_CAP_FE; |
| 162 | } else if (!strcmp(args[0], "tarpit")) { |
| 163 | tv = &proxy->timeout.tarpit; |
| 164 | td = &defpx->timeout.tarpit; |
Willy Tarreau | 51c9bde | 2008-01-06 13:40:03 +0100 | [diff] [blame] | 165 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | b16a574 | 2010-01-10 14:46:16 +0100 | [diff] [blame] | 166 | } else if (!strcmp(args[0], "http-keep-alive")) { |
| 167 | tv = &proxy->timeout.httpka; |
| 168 | td = &defpx->timeout.httpka; |
| 169 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | 036fae0 | 2008-01-06 13:24:40 +0100 | [diff] [blame] | 170 | } else if (!strcmp(args[0], "http-request")) { |
| 171 | tv = &proxy->timeout.httpreq; |
| 172 | td = &defpx->timeout.httpreq; |
Willy Tarreau | cd7afc0 | 2009-07-12 10:03:17 +0200 | [diff] [blame] | 173 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 174 | } else if (!strcmp(args[0], "server") || !strcmp(args[0], "srvtimeout")) { |
| 175 | name = "server"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 176 | tv = &proxy->timeout.server; |
| 177 | td = &defpx->timeout.server; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 178 | cap = PR_CAP_BE; |
| 179 | } else if (!strcmp(args[0], "connect") || !strcmp(args[0], "contimeout")) { |
| 180 | name = "connect"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 181 | tv = &proxy->timeout.connect; |
| 182 | td = &defpx->timeout.connect; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 183 | cap = PR_CAP_BE; |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 184 | } else if (!strcmp(args[0], "check")) { |
| 185 | tv = &proxy->timeout.check; |
| 186 | td = &defpx->timeout.check; |
| 187 | cap = PR_CAP_BE; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 188 | } else if (!strcmp(args[0], "queue")) { |
| 189 | tv = &proxy->timeout.queue; |
| 190 | td = &defpx->timeout.queue; |
| 191 | cap = PR_CAP_BE; |
Willy Tarreau | ce887fd | 2012-05-12 12:50:00 +0200 | [diff] [blame] | 192 | } else if (!strcmp(args[0], "tunnel")) { |
| 193 | tv = &proxy->timeout.tunnel; |
| 194 | td = &defpx->timeout.tunnel; |
| 195 | cap = PR_CAP_BE; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 196 | } else { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 197 | memprintf(err, |
| 198 | "'timeout' supports 'client', 'server', 'connect', 'check', " |
Willy Tarreau | ce887fd | 2012-05-12 12:50:00 +0200 | [diff] [blame] | 199 | "'queue', 'http-keep-alive', 'http-request', 'tunnel' or 'tarpit', (got '%s')", |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 200 | args[0]); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 201 | return -1; |
| 202 | } |
| 203 | |
| 204 | if (*args[1] == 0) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 205 | memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 206 | return -1; |
| 207 | } |
| 208 | |
| 209 | res = parse_time_err(args[1], &timeout, TIME_UNIT_MS); |
| 210 | if (res) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 211 | memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 212 | return -1; |
| 213 | } |
| 214 | |
| 215 | if (!(proxy->cap & cap)) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 216 | memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability", |
| 217 | name, proxy_type_str(proxy), proxy->id, |
| 218 | (cap & PR_CAP_BE) ? "backend" : "frontend"); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 219 | retval = 1; |
| 220 | } |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 221 | else if (defpx && *tv != *td) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 222 | memprintf(err, "overwriting 'timeout %s' which was already specified", name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 223 | retval = 1; |
| 224 | } |
| 225 | |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 226 | *tv = MS_TO_TICKS(timeout); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 227 | return retval; |
| 228 | } |
| 229 | |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 230 | /* This function parses a "rate-limit" statement in a proxy section. It returns |
| 231 | * -1 if there is any error, 1 for a warning, otherwise zero. If it does not |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 232 | * return zero, it will write an error or warning message into a preallocated |
| 233 | * buffer returned at <err>. The function must be called with <args> pointing |
| 234 | * to the first command line word, with <proxy> pointing to the proxy being |
| 235 | * parsed, and <defpx> to the default proxy or NULL. |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 236 | */ |
| 237 | static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy, |
Willy Tarreau | 28a47d6 | 2012-09-18 20:02:48 +0200 | [diff] [blame] | 238 | struct proxy *defpx, const char *file, int line, |
| 239 | char **err) |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 240 | { |
| 241 | int retval, cap; |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 242 | char *res; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 243 | unsigned int *tv = NULL; |
| 244 | unsigned int *td = NULL; |
| 245 | unsigned int val; |
| 246 | |
| 247 | retval = 0; |
| 248 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 249 | if (strcmp(args[1], "sessions") == 0) { |
Willy Tarreau | 13a34bd | 2009-05-10 18:52:49 +0200 | [diff] [blame] | 250 | tv = &proxy->fe_sps_lim; |
| 251 | td = &defpx->fe_sps_lim; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 252 | cap = PR_CAP_FE; |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 253 | } |
| 254 | else { |
| 255 | memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 256 | return -1; |
| 257 | } |
| 258 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 259 | if (*args[2] == 0) { |
| 260 | memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 261 | return -1; |
| 262 | } |
| 263 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 264 | val = strtoul(args[2], &res, 0); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 265 | if (*res) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 266 | memprintf(err, "'%s %s' : unexpected character '%c' in integer value '%s'", args[0], args[1], *res, args[2]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 267 | return -1; |
| 268 | } |
| 269 | |
| 270 | if (!(proxy->cap & cap)) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 271 | memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability", |
| 272 | args[0], args[1], proxy_type_str(proxy), proxy->id, |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 273 | (cap & PR_CAP_BE) ? "backend" : "frontend"); |
| 274 | retval = 1; |
| 275 | } |
| 276 | else if (defpx && *tv != *td) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 277 | memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 278 | retval = 1; |
| 279 | } |
| 280 | |
| 281 | *tv = val; |
| 282 | return retval; |
| 283 | } |
| 284 | |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 285 | /* This function inserts proxy <px> into the tree of known proxies. The proxy's |
| 286 | * name is used as the storing key so it must already have been initialized. |
| 287 | */ |
| 288 | void proxy_store_name(struct proxy *px) |
| 289 | { |
| 290 | px->conf.by_name.key = px->id; |
| 291 | ebis_insert(&proxy_by_name, &px->conf.by_name); |
| 292 | } |
| 293 | |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 294 | /* |
| 295 | * This function finds a proxy with matching name, mode and with satisfying |
| 296 | * capabilities. It also checks if there are more matching proxies with |
| 297 | * requested name as this often leads into unexpected situations. |
| 298 | */ |
| 299 | |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 300 | struct proxy *findproxy_mode(const char *name, int mode, int cap) { |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 301 | |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 302 | struct proxy *curproxy, *target = NULL; |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 303 | struct ebpt_node *node; |
| 304 | |
| 305 | for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) { |
| 306 | curproxy = container_of(node, struct proxy, conf.by_name); |
| 307 | |
| 308 | if (strcmp(curproxy->id, name) != 0) |
| 309 | break; |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 310 | |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 311 | if ((curproxy->cap & cap) != cap) |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 312 | continue; |
| 313 | |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 314 | if (curproxy->mode != mode && |
| 315 | !(curproxy->mode == PR_MODE_HTTP && mode == PR_MODE_TCP)) { |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 316 | Alert("Unable to use proxy '%s' with wrong mode, required: %s, has: %s.\n", |
| 317 | name, proxy_mode_str(mode), proxy_mode_str(curproxy->mode)); |
| 318 | Alert("You may want to use 'mode %s'.\n", proxy_mode_str(mode)); |
| 319 | return NULL; |
| 320 | } |
| 321 | |
| 322 | if (!target) { |
| 323 | target = curproxy; |
| 324 | continue; |
| 325 | } |
| 326 | |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 327 | Alert("Refusing to use duplicated proxy '%s' with overlapping capabilities: %s/%s!\n", |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 328 | name, proxy_type_str(curproxy), proxy_type_str(target)); |
| 329 | |
| 330 | return NULL; |
| 331 | } |
| 332 | |
| 333 | return target; |
| 334 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 335 | |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 336 | /* Returns a pointer to the proxy matching either name <name>, or id <name> if |
| 337 | * <name> begins with a '#'. NULL is returned if no match is found, as well as |
| 338 | * if multiple matches are found (eg: too large capabilities mask). |
| 339 | */ |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 340 | struct proxy *findproxy(const char *name, int cap) { |
| 341 | |
| 342 | struct proxy *curproxy, *target = NULL; |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 343 | int pid = -1; |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 344 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame^] | 345 | if (*name == '#') { |
| 346 | struct eb32_node *node; |
| 347 | |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 348 | pid = atoi(name + 1); |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 349 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame^] | 350 | for (node = eb32_lookup(&used_proxy_id, pid); node; node = eb32_next(node)) { |
| 351 | curproxy = container_of(node, struct proxy, conf.id); |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 352 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame^] | 353 | if (curproxy->uuid != pid) |
| 354 | break; |
| 355 | |
| 356 | if ((curproxy->cap & cap) != cap) |
| 357 | continue; |
| 358 | |
| 359 | if (target) |
| 360 | return NULL; |
| 361 | |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 362 | target = curproxy; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 363 | } |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 364 | } |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame^] | 365 | else { |
| 366 | struct ebpt_node *node; |
| 367 | |
| 368 | for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) { |
| 369 | curproxy = container_of(node, struct proxy, conf.by_name); |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 370 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame^] | 371 | if (strcmp(curproxy->id, name) != 0) |
| 372 | break; |
| 373 | |
| 374 | if ((curproxy->cap & cap) != cap) |
| 375 | continue; |
| 376 | |
| 377 | if (target) |
| 378 | return NULL; |
| 379 | |
| 380 | target = curproxy; |
| 381 | } |
| 382 | } |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 383 | return target; |
| 384 | } |
| 385 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 386 | /* |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 387 | * This function finds a server with matching name within selected proxy. |
| 388 | * It also checks if there are more matching servers with |
| 389 | * requested name as this often leads into unexpected situations. |
| 390 | */ |
| 391 | |
| 392 | struct server *findserver(const struct proxy *px, const char *name) { |
| 393 | |
| 394 | struct server *cursrv, *target = NULL; |
| 395 | |
| 396 | if (!px) |
| 397 | return NULL; |
| 398 | |
| 399 | for (cursrv = px->srv; cursrv; cursrv = cursrv->next) { |
| 400 | if (strcmp(cursrv->id, name)) |
| 401 | continue; |
| 402 | |
| 403 | if (!target) { |
| 404 | target = cursrv; |
| 405 | continue; |
| 406 | } |
| 407 | |
Cyril Bonté | 0bb519e | 2012-04-04 12:57:19 +0200 | [diff] [blame] | 408 | Alert("Refusing to use duplicated server '%s' found in proxy: %s!\n", |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 409 | name, px->id); |
| 410 | |
| 411 | return NULL; |
| 412 | } |
| 413 | |
| 414 | return target; |
| 415 | } |
| 416 | |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 417 | /* This function checks that the designated proxy has no http directives |
| 418 | * enabled. It will output a warning if there are, and will fix some of them. |
| 419 | * It returns the number of fatal errors encountered. This should be called |
| 420 | * at the end of the configuration parsing if the proxy is not in http mode. |
| 421 | * The <file> argument is used to construct the error message. |
| 422 | */ |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 423 | int proxy_cfg_ensure_no_http(struct proxy *curproxy) |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 424 | { |
| 425 | if (curproxy->cookie_name != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 426 | Warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n", |
| 427 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 428 | } |
| 429 | if (curproxy->rsp_exp != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 430 | Warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n", |
| 431 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 432 | } |
| 433 | if (curproxy->req_exp != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 434 | Warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n", |
| 435 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 436 | } |
| 437 | if (curproxy->monitor_uri != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 438 | Warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n", |
| 439 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 440 | } |
Willy Tarreau | f3e49f9 | 2009-10-03 12:21:20 +0200 | [diff] [blame] | 441 | if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) { |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 442 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 443 | curproxy->lbprm.algo |= BE_LB_ALGO_RR; |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 444 | Warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n", |
| 445 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 446 | } |
Willy Tarreau | 1780416 | 2009-11-09 21:27:51 +0100 | [diff] [blame] | 447 | if (curproxy->to_log & (LW_REQ | LW_RESP)) { |
| 448 | curproxy->to_log &= ~(LW_REQ | LW_RESP); |
Willy Tarreau | 59ad1a2 | 2014-01-29 14:39:58 +0100 | [diff] [blame] | 449 | Warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n", |
Willy Tarreau | b1f3af2 | 2013-04-12 18:30:32 +0200 | [diff] [blame] | 450 | curproxy->conf.lfs_file, curproxy->conf.lfs_line, |
Willy Tarreau | 1780416 | 2009-11-09 21:27:51 +0100 | [diff] [blame] | 451 | proxy_type_str(curproxy), curproxy->id); |
| 452 | } |
Willy Tarreau | 62a6123 | 2013-04-12 18:13:46 +0200 | [diff] [blame] | 453 | if (curproxy->conf.logformat_string == default_http_log_format || |
| 454 | curproxy->conf.logformat_string == clf_http_log_format) { |
| 455 | /* Note: we don't change the directive's file:line number */ |
| 456 | curproxy->conf.logformat_string = default_tcp_log_format; |
| 457 | Warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n", |
| 458 | curproxy->conf.lfs_file, curproxy->conf.lfs_line, |
Willy Tarreau | 196729e | 2012-05-31 19:30:26 +0200 | [diff] [blame] | 459 | proxy_type_str(curproxy), curproxy->id); |
| 460 | } |
| 461 | |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 462 | return 0; |
| 463 | } |
| 464 | |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 465 | /* Perform the most basic initialization of a proxy : |
| 466 | * memset(), list_init(*), reset_timeouts(*). |
Willy Tarreau | b249e84 | 2011-09-07 18:41:08 +0200 | [diff] [blame] | 467 | * Any new proxy or peer should be initialized via this function. |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 468 | */ |
| 469 | void init_new_proxy(struct proxy *p) |
| 470 | { |
| 471 | memset(p, 0, sizeof(struct proxy)); |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 472 | p->obj_type = OBJ_TYPE_PROXY; |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 473 | LIST_INIT(&p->pendconns); |
| 474 | LIST_INIT(&p->acl); |
| 475 | LIST_INIT(&p->http_req_rules); |
Willy Tarreau | e365c0b | 2013-06-11 16:06:12 +0200 | [diff] [blame] | 476 | LIST_INIT(&p->http_res_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 477 | LIST_INIT(&p->block_cond); |
| 478 | LIST_INIT(&p->redirect_rules); |
| 479 | LIST_INIT(&p->mon_fail_cond); |
| 480 | LIST_INIT(&p->switching_rules); |
Willy Tarreau | 4a5cade | 2012-04-05 21:09:48 +0200 | [diff] [blame] | 481 | LIST_INIT(&p->server_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 482 | LIST_INIT(&p->persist_rules); |
| 483 | LIST_INIT(&p->sticking_rules); |
| 484 | LIST_INIT(&p->storersp_rules); |
| 485 | LIST_INIT(&p->tcp_req.inspect_rules); |
| 486 | LIST_INIT(&p->tcp_rep.inspect_rules); |
| 487 | LIST_INIT(&p->tcp_req.l4_rules); |
| 488 | LIST_INIT(&p->req_add); |
| 489 | LIST_INIT(&p->rsp_add); |
| 490 | LIST_INIT(&p->listener_queue); |
William Lallemand | 0f99e34 | 2011-10-12 17:50:54 +0200 | [diff] [blame] | 491 | LIST_INIT(&p->logsrvs); |
William Lallemand | 723b73a | 2012-02-08 16:37:49 +0100 | [diff] [blame] | 492 | LIST_INIT(&p->logformat); |
William Lallemand | a73203e | 2012-03-12 12:48:57 +0100 | [diff] [blame] | 493 | LIST_INIT(&p->format_unique_id); |
Willy Tarreau | 2a65ff0 | 2012-09-13 17:54:29 +0200 | [diff] [blame] | 494 | LIST_INIT(&p->conf.bind); |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 495 | LIST_INIT(&p->conf.listeners); |
Willy Tarreau | a4312fa | 2013-04-02 16:34:32 +0200 | [diff] [blame] | 496 | LIST_INIT(&p->conf.args.list); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 497 | LIST_INIT(&p->tcpcheck_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 498 | |
| 499 | /* Timeouts are defined as -1 */ |
| 500 | proxy_reset_timeouts(p); |
| 501 | p->tcp_rep.inspect_delay = TICK_ETERNITY; |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 502 | |
| 503 | /* initial uuid is unassigned (-1) */ |
| 504 | p->uuid = -1; |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 505 | } |
| 506 | |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 507 | /* |
Willy Tarreau | 2ff7622 | 2007-04-09 19:29:56 +0200 | [diff] [blame] | 508 | * This function creates all proxy sockets. It should be done very early, |
| 509 | * typically before privileges are dropped. The sockets will be registered |
| 510 | * but not added to any fd_set, in order not to loose them across the fork(). |
Willy Tarreau | 562515c | 2011-07-25 08:11:52 +0200 | [diff] [blame] | 511 | * The proxies also start in READY state because they all have their listeners |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 512 | * bound. |
Willy Tarreau | 2ff7622 | 2007-04-09 19:29:56 +0200 | [diff] [blame] | 513 | * |
| 514 | * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL. |
| 515 | * Retryable errors will only be printed if <verbose> is not zero. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 516 | */ |
| 517 | int start_proxies(int verbose) |
| 518 | { |
| 519 | struct proxy *curproxy; |
| 520 | struct listener *listener; |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 521 | int lerr, err = ERR_NONE; |
| 522 | int pxerr; |
| 523 | char msg[100]; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 524 | |
| 525 | for (curproxy = proxy; curproxy != NULL; curproxy = curproxy->next) { |
| 526 | if (curproxy->state != PR_STNEW) |
| 527 | continue; /* already initialized */ |
| 528 | |
| 529 | pxerr = 0; |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 530 | list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) { |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 531 | if (listener->state != LI_ASSIGNED) |
| 532 | continue; /* already started */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 533 | |
Emeric Brun | cf20bf1 | 2010-10-22 16:06:11 +0200 | [diff] [blame] | 534 | lerr = listener->proto->bind(listener, msg, sizeof(msg)); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 535 | |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 536 | /* errors are reported if <verbose> is set or if they are fatal */ |
| 537 | if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) { |
| 538 | if (lerr & ERR_ALERT) |
| 539 | Alert("Starting %s %s: %s\n", |
| 540 | proxy_type_str(curproxy), curproxy->id, msg); |
| 541 | else if (lerr & ERR_WARN) |
| 542 | Warning("Starting %s %s: %s\n", |
| 543 | proxy_type_str(curproxy), curproxy->id, msg); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 544 | } |
| 545 | |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 546 | err |= lerr; |
| 547 | if (lerr & (ERR_ABORT | ERR_FATAL)) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 548 | pxerr |= 1; |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 549 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 550 | } |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 551 | else if (lerr & ERR_CODE) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 552 | pxerr |= 1; |
| 553 | continue; |
| 554 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | if (!pxerr) { |
Willy Tarreau | 562515c | 2011-07-25 08:11:52 +0200 | [diff] [blame] | 558 | curproxy->state = PR_STREADY; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 559 | send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id); |
| 560 | } |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 561 | |
| 562 | if (err & ERR_ABORT) |
| 563 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | return err; |
| 567 | } |
| 568 | |
| 569 | |
| 570 | /* |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 571 | * This is the proxy management task. It enables proxies when there are enough |
| 572 | * free sessions, or stops them when the table is full. It is designed to be |
| 573 | * called as a task which is woken up upon stopping or when rate limiting must |
| 574 | * be enforced. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 575 | */ |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 576 | struct task *manage_proxy(struct task *t) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 577 | { |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 578 | struct proxy *p = t->context; |
| 579 | int next = TICK_ETERNITY; |
Willy Tarreau | 7958422 | 2009-03-06 09:18:27 +0100 | [diff] [blame] | 580 | unsigned int wait; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 581 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 582 | /* We should periodically try to enable listeners waiting for a |
| 583 | * global resource here. |
| 584 | */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 585 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 586 | /* first, let's check if we need to stop the proxy */ |
| 587 | if (unlikely(stopping && p->state != PR_STSTOPPED)) { |
| 588 | int t; |
| 589 | t = tick_remain(now_ms, p->stop_time); |
| 590 | if (t == 0) { |
| 591 | Warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 592 | p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| 593 | send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 594 | p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| 595 | stop_proxy(p); |
| 596 | /* try to free more memory */ |
| 597 | pool_gc2(); |
| 598 | } |
| 599 | else { |
| 600 | next = tick_first(next, p->stop_time); |
| 601 | } |
| 602 | } |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 603 | |
Willy Tarreau | 3a925c1 | 2013-09-04 17:54:01 +0200 | [diff] [blame] | 604 | /* If the proxy holds a stick table, we need to purge all unused |
| 605 | * entries. These are all the ones in the table with ref_cnt == 0 |
| 606 | * and all the ones in the pool used to allocate new entries. Any |
| 607 | * entry attached to an existing session waiting for a store will |
| 608 | * be in neither list. Any entry being dumped will have ref_cnt > 0. |
| 609 | * However we protect tables that are being synced to peers. |
| 610 | */ |
| 611 | if (unlikely(stopping && p->state == PR_STSTOPPED && p->table.current)) { |
| 612 | if (!p->table.syncing) { |
| 613 | stktable_trash_oldest(&p->table, p->table.current); |
| 614 | pool_gc2(); |
| 615 | } |
| 616 | if (p->table.current) { |
| 617 | /* some entries still remain, let's recheck in one second */ |
| 618 | next = tick_first(next, tick_add(now_ms, 1000)); |
| 619 | } |
| 620 | } |
| 621 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 622 | /* the rest below is just for frontends */ |
| 623 | if (!(p->cap & PR_CAP_FE)) |
| 624 | goto out; |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 625 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 626 | /* check the various reasons we may find to block the frontend */ |
| 627 | if (unlikely(p->feconn >= p->maxconn)) { |
| 628 | if (p->state == PR_STREADY) |
| 629 | p->state = PR_STFULL; |
| 630 | goto out; |
| 631 | } |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 632 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 633 | /* OK we have no reason to block, so let's unblock if we were blocking */ |
| 634 | if (p->state == PR_STFULL) |
| 635 | p->state = PR_STREADY; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 636 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 637 | if (p->fe_sps_lim && |
| 638 | (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) { |
| 639 | /* we're blocking because a limit was reached on the number of |
| 640 | * requests/s on the frontend. We want to re-check ASAP, which |
| 641 | * means in 1 ms before estimated expiration date, because the |
| 642 | * timer will have settled down. |
| 643 | */ |
| 644 | next = tick_first(next, tick_add(now_ms, wait)); |
| 645 | goto out; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 646 | } |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 647 | |
| 648 | /* The proxy is not limited so we can re-enable any waiting listener */ |
| 649 | if (!LIST_ISEMPTY(&p->listener_queue)) |
| 650 | dequeue_all_listeners(&p->listener_queue); |
| 651 | out: |
| 652 | t->expire = next; |
| 653 | task_queue(t); |
| 654 | return t; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 655 | } |
| 656 | |
| 657 | |
| 658 | /* |
| 659 | * this function disables health-check servers so that the process will quickly be ignored |
| 660 | * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace |
| 661 | * time will not be used since it would already not listen anymore to the socket. |
| 662 | */ |
| 663 | void soft_stop(void) |
| 664 | { |
| 665 | struct proxy *p; |
Willy Tarreau | bbe11b1 | 2011-07-25 11:16:24 +0200 | [diff] [blame] | 666 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 667 | |
| 668 | stopping = 1; |
| 669 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 670 | tv_update_date(0,1); /* else, the old time before select will be used */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 671 | while (p) { |
| 672 | if (p->state != PR_STSTOPPED) { |
Willy Tarreau | f8fbcef | 2008-10-10 17:51:34 +0200 | [diff] [blame] | 673 | Warning("Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace); |
| 674 | send_log(p, LOG_WARNING, "Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace); |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 675 | p->stop_time = tick_add(now_ms, p->grace); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 676 | } |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 677 | if (p->table.size && p->table.sync_task) |
| 678 | task_wakeup(p->table.sync_task, TASK_WOKEN_MSG); |
| 679 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 680 | /* wake every proxy task up so that they can handle the stopping */ |
Willy Tarreau | d1a33e3 | 2012-10-04 00:14:33 +0200 | [diff] [blame] | 681 | if (p->task) |
| 682 | task_wakeup(p->task, TASK_WOKEN_MSG); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 683 | p = p->next; |
| 684 | } |
Willy Tarreau | bbe11b1 | 2011-07-25 11:16:24 +0200 | [diff] [blame] | 685 | |
| 686 | prs = peers; |
| 687 | while (prs) { |
| 688 | stop_proxy((struct proxy *)prs->peers_fe); |
| 689 | prs = prs->next; |
| 690 | } |
Willy Tarreau | d0807c3 | 2010-08-27 18:26:11 +0200 | [diff] [blame] | 691 | /* signal zero is used to broadcast the "stopping" event */ |
| 692 | signal_handler(0); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 693 | } |
| 694 | |
| 695 | |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 696 | /* Temporarily disables listening on all of the proxy's listeners. Upon |
| 697 | * success, the proxy enters the PR_PAUSED state. If disabling at least one |
| 698 | * listener returns an error, then the proxy state is set to PR_STERROR |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 699 | * because we don't know how to resume from this. The function returns 0 |
| 700 | * if it fails, or non-zero on success. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 701 | */ |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 702 | int pause_proxy(struct proxy *p) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 703 | { |
| 704 | struct listener *l; |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 705 | |
| 706 | if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR || |
| 707 | p->state == PR_STSTOPPED || p->state == PR_STPAUSED) |
| 708 | return 1; |
| 709 | |
| 710 | Warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 711 | send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 712 | |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 713 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 714 | if (!pause_listener(l)) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 715 | p->state = PR_STERROR; |
| 716 | } |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 717 | |
| 718 | if (p->state == PR_STERROR) { |
| 719 | Warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id); |
| 720 | send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id); |
| 721 | return 0; |
| 722 | } |
| 723 | |
| 724 | p->state = PR_STPAUSED; |
| 725 | return 1; |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | |
| 729 | /* |
| 730 | * This function completely stops a proxy and releases its listeners. It has |
| 731 | * to be called when going down in order to release the ports so that another |
| 732 | * process may bind to them. It must also be called on disabled proxies at the |
| 733 | * end of start-up. When all listeners are closed, the proxy is set to the |
| 734 | * PR_STSTOPPED state. |
| 735 | */ |
| 736 | void stop_proxy(struct proxy *p) |
| 737 | { |
| 738 | struct listener *l; |
| 739 | |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 740 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 741 | unbind_listener(l); |
| 742 | if (l->state >= LI_ASSIGNED) { |
| 743 | delete_listener(l); |
| 744 | listeners--; |
Willy Tarreau | af7ad00 | 2010-08-31 15:39:26 +0200 | [diff] [blame] | 745 | jobs--; |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 746 | } |
| 747 | } |
| 748 | p->state = PR_STSTOPPED; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 749 | } |
| 750 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 751 | /* This function resumes listening on the specified proxy. It scans all of its |
| 752 | * listeners and tries to enable them all. If any of them fails, the proxy is |
| 753 | * put back to the paused state. It returns 1 upon success, or zero if an error |
| 754 | * is encountered. |
| 755 | */ |
| 756 | int resume_proxy(struct proxy *p) |
| 757 | { |
| 758 | struct listener *l; |
| 759 | int fail; |
| 760 | |
| 761 | if (p->state != PR_STPAUSED) |
| 762 | return 1; |
| 763 | |
| 764 | Warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 765 | send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 766 | |
| 767 | fail = 0; |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 768 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 769 | if (!resume_listener(l)) { |
| 770 | int port; |
| 771 | |
| 772 | port = get_host_port(&l->addr); |
| 773 | if (port) { |
| 774 | Warning("Port %d busy while trying to enable %s %s.\n", |
| 775 | port, proxy_cap_str(p->cap), p->id); |
| 776 | send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n", |
| 777 | port, proxy_cap_str(p->cap), p->id); |
| 778 | } |
| 779 | else { |
| 780 | Warning("Bind on socket %d busy while trying to enable %s %s.\n", |
| 781 | l->luid, proxy_cap_str(p->cap), p->id); |
| 782 | send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n", |
| 783 | l->luid, proxy_cap_str(p->cap), p->id); |
| 784 | } |
| 785 | |
| 786 | /* Another port might have been enabled. Let's stop everything. */ |
| 787 | fail = 1; |
| 788 | break; |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | p->state = PR_STREADY; |
| 793 | if (fail) { |
| 794 | pause_proxy(p); |
| 795 | return 0; |
| 796 | } |
| 797 | return 1; |
| 798 | } |
| 799 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 800 | /* |
| 801 | * This function temporarily disables listening so that another new instance |
| 802 | * can start listening. It is designed to be called upon reception of a |
| 803 | * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop |
| 804 | * the proxy, or a SIGTTIN can be sent to listen again. |
| 805 | */ |
| 806 | void pause_proxies(void) |
| 807 | { |
| 808 | int err; |
| 809 | struct proxy *p; |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 810 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 811 | |
| 812 | err = 0; |
| 813 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 814 | tv_update_date(0,1); /* else, the old time before select will be used */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 815 | while (p) { |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 816 | err |= !pause_proxy(p); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 817 | p = p->next; |
| 818 | } |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 819 | |
| 820 | prs = peers; |
| 821 | while (prs) { |
| 822 | p = prs->peers_fe; |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 823 | err |= !pause_proxy(p); |
| 824 | prs = prs->next; |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 825 | } |
| 826 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 827 | if (err) { |
| 828 | Warning("Some proxies refused to pause, performing soft stop now.\n"); |
| 829 | send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n"); |
| 830 | soft_stop(); |
| 831 | } |
| 832 | } |
| 833 | |
| 834 | |
| 835 | /* |
| 836 | * This function reactivates listening. This can be used after a call to |
| 837 | * sig_pause(), for example when a new instance has failed starting up. |
| 838 | * It is designed to be called upon reception of a SIGTTIN. |
| 839 | */ |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 840 | void resume_proxies(void) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 841 | { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 842 | int err; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 843 | struct proxy *p; |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 844 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 845 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 846 | err = 0; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 847 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 848 | tv_update_date(0,1); /* else, the old time before select will be used */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 849 | while (p) { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 850 | err |= !resume_proxy(p); |
| 851 | p = p->next; |
| 852 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 853 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 854 | prs = peers; |
| 855 | while (prs) { |
| 856 | p = prs->peers_fe; |
| 857 | err |= !resume_proxy(p); |
| 858 | prs = prs->next; |
| 859 | } |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 860 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 861 | if (err) { |
| 862 | Warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n"); |
| 863 | send_log(p, LOG_WARNING, "Some proxies refused to resume, a restart is probably needed to resume safe operations.\n"); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 864 | } |
| 865 | } |
| 866 | |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 867 | /* Set current session's backend to <be>. Nothing is done if the |
| 868 | * session already had a backend assigned, which is indicated by |
| 869 | * s->flags & SN_BE_ASSIGNED. |
| 870 | * All flags, stats and counters which need be updated are updated. |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 871 | * Returns 1 if done, 0 in case of internal error, eg: lack of resource. |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 872 | */ |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 873 | int session_set_backend(struct session *s, struct proxy *be) |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 874 | { |
| 875 | if (s->flags & SN_BE_ASSIGNED) |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 876 | return 1; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 877 | s->be = be; |
| 878 | be->beconn++; |
Willy Tarreau | 7d0aaf3 | 2011-03-10 23:25:56 +0100 | [diff] [blame] | 879 | if (be->beconn > be->be_counters.conn_max) |
| 880 | be->be_counters.conn_max = be->beconn; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 881 | proxy_inc_be_ctr(be); |
| 882 | |
| 883 | /* assign new parameters to the session from the new backend */ |
Willy Tarreau | f27b5ea | 2009-10-03 22:01:18 +0200 | [diff] [blame] | 884 | s->si[1].flags &= ~SI_FL_INDEP_STR; |
| 885 | if (be->options2 & PR_O2_INDEPSTR) |
| 886 | s->si[1].flags |= SI_FL_INDEP_STR; |
| 887 | |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 888 | if (be->options2 & PR_O2_RSPBUG_OK) |
| 889 | s->txn.rsp.err_pos = -1; /* let buggy responses pass */ |
| 890 | s->flags |= SN_BE_ASSIGNED; |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 891 | |
| 892 | /* If the target backend requires HTTP processing, we have to allocate |
| 893 | * a struct hdr_idx for it if we did not have one. |
| 894 | */ |
Willy Tarreau | 25320b2 | 2013-03-24 07:22:08 +0100 | [diff] [blame] | 895 | if (unlikely(!s->txn.hdr_idx.v && be->http_needed)) { |
Willy Tarreau | 34eb671 | 2011-10-24 18:15:04 +0200 | [diff] [blame] | 896 | if ((s->txn.hdr_idx.v = pool_alloc2(pool2_hdr_idx)) == NULL) |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 897 | return 0; /* not enough memory */ |
Willy Tarreau | 39e4f62 | 2010-05-31 17:01:36 +0200 | [diff] [blame] | 898 | |
| 899 | /* and now initialize the HTTP transaction state */ |
| 900 | http_init_txn(s); |
| 901 | |
Willy Tarreau | ac1932d | 2011-10-24 19:14:41 +0200 | [diff] [blame] | 902 | s->txn.hdr_idx.size = global.tune.max_http_hdr; |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 903 | hdr_idx_init(&s->txn.hdr_idx); |
| 904 | } |
| 905 | |
Willy Tarreau | 80a92c0 | 2014-03-12 10:41:13 +0100 | [diff] [blame] | 906 | /* If an LB algorithm needs to access some pre-parsed body contents, |
| 907 | * we must not start to forward anything until the connection is |
| 908 | * confirmed otherwise we'll lose the pointer to these data and |
| 909 | * prevent the hash from being doable again after a redispatch. |
| 910 | */ |
| 911 | if (be->mode == PR_MODE_HTTP && |
| 912 | (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM)) |
| 913 | s->txn.req.flags |= HTTP_MSGF_WAIT_CONN; |
| 914 | |
Willy Tarreau | 96e3121 | 2011-05-30 18:10:30 +0200 | [diff] [blame] | 915 | if (be->options2 & PR_O2_NODELAY) { |
Willy Tarreau | 03cdb7c | 2012-08-27 23:14:58 +0200 | [diff] [blame] | 916 | s->req->flags |= CF_NEVER_WAIT; |
| 917 | s->rep->flags |= CF_NEVER_WAIT; |
Willy Tarreau | 96e3121 | 2011-05-30 18:10:30 +0200 | [diff] [blame] | 918 | } |
| 919 | |
Willy Tarreau | c1a2167 | 2009-08-16 22:37:44 +0200 | [diff] [blame] | 920 | /* We want to enable the backend-specific analysers except those which |
| 921 | * were already run as part of the frontend/listener. Note that it would |
| 922 | * be more reliable to store the list of analysers that have been run, |
| 923 | * but what we do here is OK for now. |
Emeric Brun | 647caf1 | 2009-06-30 17:57:00 +0200 | [diff] [blame] | 924 | */ |
Willy Tarreau | c1a2167 | 2009-08-16 22:37:44 +0200 | [diff] [blame] | 925 | s->req->analysers |= be->be_req_ana & ~(s->listener->analysers); |
Emeric Brun | 647caf1 | 2009-06-30 17:57:00 +0200 | [diff] [blame] | 926 | |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 927 | return 1; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 928 | } |
| 929 | |
Willy Tarreau | dc13c11 | 2013-06-21 23:16:39 +0200 | [diff] [blame] | 930 | static struct cfg_kw_list cfg_kws = {ILH, { |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 931 | { CFG_LISTEN, "timeout", proxy_parse_timeout }, |
| 932 | { CFG_LISTEN, "clitimeout", proxy_parse_timeout }, |
| 933 | { CFG_LISTEN, "contimeout", proxy_parse_timeout }, |
| 934 | { CFG_LISTEN, "srvtimeout", proxy_parse_timeout }, |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 935 | { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit }, |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 936 | { 0, NULL, NULL }, |
| 937 | }}; |
| 938 | |
| 939 | __attribute__((constructor)) |
| 940 | static void __proxy_module_init(void) |
| 941 | { |
| 942 | cfg_register_keywords(&cfg_kws); |
| 943 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 944 | |
| 945 | /* |
| 946 | * Local variables: |
| 947 | * c-indent-level: 8 |
| 948 | * c-basic-offset: 8 |
| 949 | * End: |
| 950 | */ |