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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * Proxy variables and functions.
3 *
Willy Tarreau3a7d2072009-03-05 23:48:25 +01004 * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
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 Tarreauc8f24f82007-11-30 18:38:35 +010015#include <string.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020016#include <sys/types.h>
17#include <sys/socket.h>
18#include <sys/stat.h>
19
Willy Tarreau2dd0d472006-06-29 17:53:05 +020020#include <common/defaults.h>
Willy Tarreau9de1bbd2008-07-09 20:34:27 +020021#include <common/cfgparse.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020022#include <common/compat.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020023#include <common/config.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010024#include <common/errors.h>
Willy Tarreau4d2d0982007-05-14 00:39:29 +020025#include <common/memory.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020026#include <common/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020027
Willy Tarreaucfd837f2014-03-15 07:43:51 +010028#include <eb32tree.h>
29#include <ebistree.h>
30
Willy Tarreaubaaee002006-06-26 02:48:02 +020031#include <types/global.h>
Willy Tarreau3fdb3662012-11-12 00:42:33 +010032#include <types/obj_type.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020033#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020034
Alexandre Cassen87ea5482007-10-11 20:48:58 +020035#include <proto/backend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <proto/fd.h>
Willy Tarreau51aecc72009-07-12 09:47:04 +020037#include <proto/hdr_idx.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020038#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020039#include <proto/log.h>
Willy Tarreaue6b98942007-10-29 01:09:36 +010040#include <proto/proto_tcp.h>
Willy Tarreau39e4f622010-05-31 17:01:36 +020041#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020042#include <proto/proxy.h>
Willy Tarreaud0807c32010-08-27 18:26:11 +020043#include <proto/signal.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020044#include <proto/task.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020045
46
Willy Tarreau918ff602011-07-25 16:33:49 +020047int listeners; /* # of proxy listeners, set by cfgparse */
Willy Tarreaubaaee002006-06-26 02:48:02 +020048struct proxy *proxy = NULL; /* list of all existing proxies */
Willy Tarreau53fb4ae2009-10-04 23:04:08 +020049struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
Willy Tarreauf79d9502014-03-15 07:22:35 +010050struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */
Willy Tarreau10479e42010-12-12 14:00:34 +010051unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
Willy Tarreaubaaee002006-06-26 02:48:02 +020052
Willy Tarreau977b8e42006-12-29 14:19:17 +010053/*
Willy Tarreau816eb542007-11-04 07:04:43 +010054 * 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 Tarreau977b8e42006-12-29 14:19:17 +010058 */
Willy Tarreau816eb542007-11-04 07:04:43 +010059const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +010060{
Willy Tarreau816eb542007-11-04 07:04:43 +010061 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 Tarreau977b8e42006-12-29 14:19:17 +010070}
71
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +010072/*
73 * This function returns a string containing the mode of the proxy in a format
74 * suitable for error messages.
75 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +010076const 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 Tarreauf3950172009-10-10 18:35:51 +020088/*
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 */
95int 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 Tarreau7ecc4202014-03-15 07:57:11 +0100100 int sid;
Willy Tarreauf3950172009-10-10 18:35:51 +0200101
102 *sv = NULL;
103
Willy Tarreau050536d2012-10-04 08:47:34 +0200104 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200105 if (*sv_name == '#')
106 sid = atoi(sv_name + 1);
107
Willy Tarreau7ecc4202014-03-15 07:57:11 +0100108 p = findproxy(bk_name, PR_CAP_BE);
Willy Tarreauf3950172009-10-10 18:35:51 +0200109 if (bk)
110 *bk = p;
111 if (!p)
112 return 0;
113
114 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100115 if ((sid >= 0 && s->puid == sid) ||
116 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200117 break;
118 *sv = s;
119 if (!s)
120 return 0;
121 return 1;
122}
123
Willy Tarreaue219db72007-12-03 01:30:13 +0100124/* This function parses a "timeout" statement in a proxy section. It returns
125 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200126 * return zero, it will write an error or warning message into a preallocated
127 * buffer returned at <err>. The trailing is not be written. The function must
128 * be called with <args> pointing to the first command line word, with <proxy>
129 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
130 * As a special case for compatibility with older configs, it also accepts
131 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100132 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200133static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200134 struct proxy *defpx, const char *file, int line,
135 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100136{
137 unsigned timeout;
138 int retval, cap;
139 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200140 int *tv = NULL;
141 int *td = NULL;
Willy Tarreaue219db72007-12-03 01:30:13 +0100142
143 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200144
145 /* simply skip "timeout" but remain compatible with old form */
146 if (strcmp(args[0], "timeout") == 0)
147 args++;
148
Willy Tarreaue219db72007-12-03 01:30:13 +0100149 name = args[0];
150 if (!strcmp(args[0], "client") || !strcmp(args[0], "clitimeout")) {
151 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100152 tv = &proxy->timeout.client;
153 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100154 cap = PR_CAP_FE;
155 } else if (!strcmp(args[0], "tarpit")) {
156 tv = &proxy->timeout.tarpit;
157 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100158 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100159 } else if (!strcmp(args[0], "http-keep-alive")) {
160 tv = &proxy->timeout.httpka;
161 td = &defpx->timeout.httpka;
162 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100163 } else if (!strcmp(args[0], "http-request")) {
164 tv = &proxy->timeout.httpreq;
165 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200166 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100167 } else if (!strcmp(args[0], "server") || !strcmp(args[0], "srvtimeout")) {
168 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100169 tv = &proxy->timeout.server;
170 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100171 cap = PR_CAP_BE;
172 } else if (!strcmp(args[0], "connect") || !strcmp(args[0], "contimeout")) {
173 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100174 tv = &proxy->timeout.connect;
175 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100176 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100177 } else if (!strcmp(args[0], "check")) {
178 tv = &proxy->timeout.check;
179 td = &defpx->timeout.check;
180 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100181 } else if (!strcmp(args[0], "queue")) {
182 tv = &proxy->timeout.queue;
183 td = &defpx->timeout.queue;
184 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200185 } else if (!strcmp(args[0], "tunnel")) {
186 tv = &proxy->timeout.tunnel;
187 td = &defpx->timeout.tunnel;
188 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100189 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200190 memprintf(err,
191 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreauce887fd2012-05-12 12:50:00 +0200192 "'queue', 'http-keep-alive', 'http-request', 'tunnel' or 'tarpit', (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200193 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100194 return -1;
195 }
196
197 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200198 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100199 return -1;
200 }
201
202 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
203 if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200204 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100205 return -1;
206 }
207
208 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200209 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
210 name, proxy_type_str(proxy), proxy->id,
211 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100212 retval = 1;
213 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200214 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200215 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100216 retval = 1;
217 }
218
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200219 *tv = MS_TO_TICKS(timeout);
Willy Tarreaue219db72007-12-03 01:30:13 +0100220 return retval;
221}
222
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100223/* This function parses a "rate-limit" statement in a proxy section. It returns
224 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200225 * return zero, it will write an error or warning message into a preallocated
226 * buffer returned at <err>. The function must be called with <args> pointing
227 * to the first command line word, with <proxy> pointing to the proxy being
228 * parsed, and <defpx> to the default proxy or NULL.
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100229 */
230static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200231 struct proxy *defpx, const char *file, int line,
232 char **err)
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100233{
234 int retval, cap;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200235 char *res;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100236 unsigned int *tv = NULL;
237 unsigned int *td = NULL;
238 unsigned int val;
239
240 retval = 0;
241
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200242 if (strcmp(args[1], "sessions") == 0) {
Willy Tarreau13a34bd2009-05-10 18:52:49 +0200243 tv = &proxy->fe_sps_lim;
244 td = &defpx->fe_sps_lim;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100245 cap = PR_CAP_FE;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200246 }
247 else {
248 memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100249 return -1;
250 }
251
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200252 if (*args[2] == 0) {
253 memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100254 return -1;
255 }
256
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200257 val = strtoul(args[2], &res, 0);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100258 if (*res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200259 memprintf(err, "'%s %s' : unexpected character '%c' in integer value '%s'", args[0], args[1], *res, args[2]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100260 return -1;
261 }
262
263 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200264 memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability",
265 args[0], args[1], proxy_type_str(proxy), proxy->id,
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100266 (cap & PR_CAP_BE) ? "backend" : "frontend");
267 retval = 1;
268 }
269 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200270 memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100271 retval = 1;
272 }
273
274 *tv = val;
275 return retval;
276}
277
Willy Tarreauf79d9502014-03-15 07:22:35 +0100278/* This function inserts proxy <px> into the tree of known proxies. The proxy's
279 * name is used as the storing key so it must already have been initialized.
280 */
281void proxy_store_name(struct proxy *px)
282{
283 px->conf.by_name.key = px->id;
284 ebis_insert(&proxy_by_name, &px->conf.by_name);
285}
286
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100287/*
288 * This function finds a proxy with matching name, mode and with satisfying
289 * capabilities. It also checks if there are more matching proxies with
290 * requested name as this often leads into unexpected situations.
291 */
292
Alex Williams96532db2009-11-01 21:27:13 -0500293struct proxy *findproxy_mode(const char *name, int mode, int cap) {
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100294
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100295 struct proxy *curproxy, *target = NULL;
Willy Tarreauf79d9502014-03-15 07:22:35 +0100296 struct ebpt_node *node;
297
298 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
299 curproxy = container_of(node, struct proxy, conf.by_name);
300
301 if (strcmp(curproxy->id, name) != 0)
302 break;
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100303
Willy Tarreauf79d9502014-03-15 07:22:35 +0100304 if ((curproxy->cap & cap) != cap)
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100305 continue;
306
Willy Tarreau51aecc72009-07-12 09:47:04 +0200307 if (curproxy->mode != mode &&
308 !(curproxy->mode == PR_MODE_HTTP && mode == PR_MODE_TCP)) {
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100309 Alert("Unable to use proxy '%s' with wrong mode, required: %s, has: %s.\n",
310 name, proxy_mode_str(mode), proxy_mode_str(curproxy->mode));
311 Alert("You may want to use 'mode %s'.\n", proxy_mode_str(mode));
312 return NULL;
313 }
314
315 if (!target) {
316 target = curproxy;
317 continue;
318 }
319
Willy Tarreau816eb542007-11-04 07:04:43 +0100320 Alert("Refusing to use duplicated proxy '%s' with overlapping capabilities: %s/%s!\n",
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100321 name, proxy_type_str(curproxy), proxy_type_str(target));
322
323 return NULL;
324 }
325
326 return target;
327}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200328
Willy Tarreaubc216c42011-08-02 11:25:54 +0200329/* Returns a pointer to the proxy matching either name <name>, or id <name> if
330 * <name> begins with a '#'. NULL is returned if no match is found, as well as
331 * if multiple matches are found (eg: too large capabilities mask).
332 */
Alex Williams96532db2009-11-01 21:27:13 -0500333struct proxy *findproxy(const char *name, int cap) {
334
335 struct proxy *curproxy, *target = NULL;
Willy Tarreau050536d2012-10-04 08:47:34 +0200336 int pid = -1;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200337
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100338 if (*name == '#') {
339 struct eb32_node *node;
340
Willy Tarreaubc216c42011-08-02 11:25:54 +0200341 pid = atoi(name + 1);
Alex Williams96532db2009-11-01 21:27:13 -0500342
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100343 for (node = eb32_lookup(&used_proxy_id, pid); node; node = eb32_next(node)) {
344 curproxy = container_of(node, struct proxy, conf.id);
Alex Williams96532db2009-11-01 21:27:13 -0500345
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100346 if (curproxy->uuid != pid)
347 break;
348
349 if ((curproxy->cap & cap) != cap)
350 continue;
351
352 if (target)
353 return NULL;
354
Alex Williams96532db2009-11-01 21:27:13 -0500355 target = curproxy;
Alex Williams96532db2009-11-01 21:27:13 -0500356 }
Alex Williams96532db2009-11-01 21:27:13 -0500357 }
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100358 else {
359 struct ebpt_node *node;
360
361 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
362 curproxy = container_of(node, struct proxy, conf.by_name);
Alex Williams96532db2009-11-01 21:27:13 -0500363
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100364 if (strcmp(curproxy->id, name) != 0)
365 break;
366
367 if ((curproxy->cap & cap) != cap)
368 continue;
369
370 if (target)
371 return NULL;
372
373 target = curproxy;
374 }
375 }
Alex Williams96532db2009-11-01 21:27:13 -0500376 return target;
377}
378
Willy Tarreaubaaee002006-06-26 02:48:02 +0200379/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100380 * This function finds a server with matching name within selected proxy.
381 * It also checks if there are more matching servers with
382 * requested name as this often leads into unexpected situations.
383 */
384
385struct server *findserver(const struct proxy *px, const char *name) {
386
387 struct server *cursrv, *target = NULL;
388
389 if (!px)
390 return NULL;
391
392 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
393 if (strcmp(cursrv->id, name))
394 continue;
395
396 if (!target) {
397 target = cursrv;
398 continue;
399 }
400
Cyril Bonté0bb519e2012-04-04 12:57:19 +0200401 Alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100402 name, px->id);
403
404 return NULL;
405 }
406
407 return target;
408}
409
Willy Tarreauff01a212009-03-15 13:46:16 +0100410/* This function checks that the designated proxy has no http directives
411 * enabled. It will output a warning if there are, and will fix some of them.
412 * It returns the number of fatal errors encountered. This should be called
413 * at the end of the configuration parsing if the proxy is not in http mode.
414 * The <file> argument is used to construct the error message.
415 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200416int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100417{
418 if (curproxy->cookie_name != NULL) {
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200419 Warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
420 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100421 }
422 if (curproxy->rsp_exp != NULL) {
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200423 Warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
424 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100425 }
426 if (curproxy->req_exp != NULL) {
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200427 Warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
428 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100429 }
430 if (curproxy->monitor_uri != NULL) {
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200431 Warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
432 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100433 }
Willy Tarreauf3e49f92009-10-03 12:21:20 +0200434 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100435 curproxy->lbprm.algo &= ~BE_LB_ALGO;
436 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200437 Warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
438 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100439 }
Willy Tarreau17804162009-11-09 21:27:51 +0100440 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
441 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100442 Warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
Willy Tarreaub1f3af22013-04-12 18:30:32 +0200443 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
Willy Tarreau17804162009-11-09 21:27:51 +0100444 proxy_type_str(curproxy), curproxy->id);
445 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200446 if (curproxy->conf.logformat_string == default_http_log_format ||
447 curproxy->conf.logformat_string == clf_http_log_format) {
448 /* Note: we don't change the directive's file:line number */
449 curproxy->conf.logformat_string = default_tcp_log_format;
450 Warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
451 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
Willy Tarreau196729e2012-05-31 19:30:26 +0200452 proxy_type_str(curproxy), curproxy->id);
453 }
454
Willy Tarreauff01a212009-03-15 13:46:16 +0100455 return 0;
456}
457
Willy Tarreau237250c2011-07-29 01:49:03 +0200458/* Perform the most basic initialization of a proxy :
459 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +0200460 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +0200461 */
462void init_new_proxy(struct proxy *p)
463{
464 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100465 p->obj_type = OBJ_TYPE_PROXY;
Willy Tarreau237250c2011-07-29 01:49:03 +0200466 LIST_INIT(&p->pendconns);
467 LIST_INIT(&p->acl);
468 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200469 LIST_INIT(&p->http_res_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200470 LIST_INIT(&p->block_cond);
471 LIST_INIT(&p->redirect_rules);
472 LIST_INIT(&p->mon_fail_cond);
473 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200474 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200475 LIST_INIT(&p->persist_rules);
476 LIST_INIT(&p->sticking_rules);
477 LIST_INIT(&p->storersp_rules);
478 LIST_INIT(&p->tcp_req.inspect_rules);
479 LIST_INIT(&p->tcp_rep.inspect_rules);
480 LIST_INIT(&p->tcp_req.l4_rules);
481 LIST_INIT(&p->req_add);
482 LIST_INIT(&p->rsp_add);
483 LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +0200484 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +0100485 LIST_INIT(&p->logformat);
William Lallemanda73203e2012-03-12 12:48:57 +0100486 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200487 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +0200488 LIST_INIT(&p->conf.listeners);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200489 LIST_INIT(&p->conf.args.list);
Baptiste Assmann5ecb77f2013-10-06 23:24:13 +0200490 LIST_INIT(&p->tcpcheck_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200491
492 /* Timeouts are defined as -1 */
493 proxy_reset_timeouts(p);
494 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +0200495
496 /* initial uuid is unassigned (-1) */
497 p->uuid = -1;
Willy Tarreau237250c2011-07-29 01:49:03 +0200498}
499
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100500/*
Willy Tarreau2ff76222007-04-09 19:29:56 +0200501 * This function creates all proxy sockets. It should be done very early,
502 * typically before privileges are dropped. The sockets will be registered
503 * but not added to any fd_set, in order not to loose them across the fork().
Willy Tarreau562515c2011-07-25 08:11:52 +0200504 * The proxies also start in READY state because they all have their listeners
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200505 * bound.
Willy Tarreau2ff76222007-04-09 19:29:56 +0200506 *
507 * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
508 * Retryable errors will only be printed if <verbose> is not zero.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200509 */
510int start_proxies(int verbose)
511{
512 struct proxy *curproxy;
513 struct listener *listener;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100514 int lerr, err = ERR_NONE;
515 int pxerr;
516 char msg[100];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200517
518 for (curproxy = proxy; curproxy != NULL; curproxy = curproxy->next) {
519 if (curproxy->state != PR_STNEW)
520 continue; /* already initialized */
521
522 pxerr = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200523 list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
Willy Tarreaue6b98942007-10-29 01:09:36 +0100524 if (listener->state != LI_ASSIGNED)
525 continue; /* already started */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200526
Emeric Bruncf20bf12010-10-22 16:06:11 +0200527 lerr = listener->proto->bind(listener, msg, sizeof(msg));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200528
Willy Tarreaue6b98942007-10-29 01:09:36 +0100529 /* errors are reported if <verbose> is set or if they are fatal */
530 if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
531 if (lerr & ERR_ALERT)
532 Alert("Starting %s %s: %s\n",
533 proxy_type_str(curproxy), curproxy->id, msg);
534 else if (lerr & ERR_WARN)
535 Warning("Starting %s %s: %s\n",
536 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200537 }
538
Willy Tarreaue6b98942007-10-29 01:09:36 +0100539 err |= lerr;
540 if (lerr & (ERR_ABORT | ERR_FATAL)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200541 pxerr |= 1;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100542 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200543 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100544 else if (lerr & ERR_CODE) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200545 pxerr |= 1;
546 continue;
547 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200548 }
549
550 if (!pxerr) {
Willy Tarreau562515c2011-07-25 08:11:52 +0200551 curproxy->state = PR_STREADY;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200552 send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
553 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100554
555 if (err & ERR_ABORT)
556 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200557 }
558
559 return err;
560}
561
562
563/*
Willy Tarreau918ff602011-07-25 16:33:49 +0200564 * This is the proxy management task. It enables proxies when there are enough
565 * free sessions, or stops them when the table is full. It is designed to be
566 * called as a task which is woken up upon stopping or when rate limiting must
567 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200568 */
Willy Tarreau918ff602011-07-25 16:33:49 +0200569struct task *manage_proxy(struct task *t)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200570{
Willy Tarreau918ff602011-07-25 16:33:49 +0200571 struct proxy *p = t->context;
572 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +0100573 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200574
Willy Tarreau918ff602011-07-25 16:33:49 +0200575 /* We should periodically try to enable listeners waiting for a
576 * global resource here.
577 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200578
Willy Tarreau918ff602011-07-25 16:33:49 +0200579 /* first, let's check if we need to stop the proxy */
580 if (unlikely(stopping && p->state != PR_STSTOPPED)) {
581 int t;
582 t = tick_remain(now_ms, p->stop_time);
583 if (t == 0) {
584 Warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
585 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
586 send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
587 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
588 stop_proxy(p);
589 /* try to free more memory */
590 pool_gc2();
591 }
592 else {
593 next = tick_first(next, p->stop_time);
594 }
595 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200596
Willy Tarreau3a925c12013-09-04 17:54:01 +0200597 /* If the proxy holds a stick table, we need to purge all unused
598 * entries. These are all the ones in the table with ref_cnt == 0
599 * and all the ones in the pool used to allocate new entries. Any
600 * entry attached to an existing session waiting for a store will
601 * be in neither list. Any entry being dumped will have ref_cnt > 0.
602 * However we protect tables that are being synced to peers.
603 */
604 if (unlikely(stopping && p->state == PR_STSTOPPED && p->table.current)) {
605 if (!p->table.syncing) {
606 stktable_trash_oldest(&p->table, p->table.current);
607 pool_gc2();
608 }
609 if (p->table.current) {
610 /* some entries still remain, let's recheck in one second */
611 next = tick_first(next, tick_add(now_ms, 1000));
612 }
613 }
614
Willy Tarreau918ff602011-07-25 16:33:49 +0200615 /* the rest below is just for frontends */
616 if (!(p->cap & PR_CAP_FE))
617 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200618
Willy Tarreau918ff602011-07-25 16:33:49 +0200619 /* check the various reasons we may find to block the frontend */
620 if (unlikely(p->feconn >= p->maxconn)) {
621 if (p->state == PR_STREADY)
622 p->state = PR_STFULL;
623 goto out;
624 }
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100625
Willy Tarreau918ff602011-07-25 16:33:49 +0200626 /* OK we have no reason to block, so let's unblock if we were blocking */
627 if (p->state == PR_STFULL)
628 p->state = PR_STREADY;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100629
Willy Tarreau918ff602011-07-25 16:33:49 +0200630 if (p->fe_sps_lim &&
631 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
632 /* we're blocking because a limit was reached on the number of
633 * requests/s on the frontend. We want to re-check ASAP, which
634 * means in 1 ms before estimated expiration date, because the
635 * timer will have settled down.
636 */
637 next = tick_first(next, tick_add(now_ms, wait));
638 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200639 }
Willy Tarreau918ff602011-07-25 16:33:49 +0200640
641 /* The proxy is not limited so we can re-enable any waiting listener */
642 if (!LIST_ISEMPTY(&p->listener_queue))
643 dequeue_all_listeners(&p->listener_queue);
644 out:
645 t->expire = next;
646 task_queue(t);
647 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200648}
649
650
651/*
652 * this function disables health-check servers so that the process will quickly be ignored
653 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
654 * time will not be used since it would already not listen anymore to the socket.
655 */
656void soft_stop(void)
657{
658 struct proxy *p;
Willy Tarreaubbe11b12011-07-25 11:16:24 +0200659 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200660
661 stopping = 1;
662 p = proxy;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200663 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200664 while (p) {
665 if (p->state != PR_STSTOPPED) {
Willy Tarreauf8fbcef2008-10-10 17:51:34 +0200666 Warning("Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace);
667 send_log(p, LOG_WARNING, "Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace);
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200668 p->stop_time = tick_add(now_ms, p->grace);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200669 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +0200670 if (p->table.size && p->table.sync_task)
671 task_wakeup(p->table.sync_task, TASK_WOKEN_MSG);
672
Willy Tarreau918ff602011-07-25 16:33:49 +0200673 /* wake every proxy task up so that they can handle the stopping */
Willy Tarreaud1a33e32012-10-04 00:14:33 +0200674 if (p->task)
675 task_wakeup(p->task, TASK_WOKEN_MSG);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200676 p = p->next;
677 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +0200678
679 prs = peers;
680 while (prs) {
681 stop_proxy((struct proxy *)prs->peers_fe);
682 prs = prs->next;
683 }
Willy Tarreaud0807c32010-08-27 18:26:11 +0200684 /* signal zero is used to broadcast the "stopping" event */
685 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200686}
687
688
Willy Tarreaube58c382011-07-24 18:28:10 +0200689/* Temporarily disables listening on all of the proxy's listeners. Upon
690 * success, the proxy enters the PR_PAUSED state. If disabling at least one
691 * listener returns an error, then the proxy state is set to PR_STERROR
Willy Tarreauce8fe252011-09-07 19:14:57 +0200692 * because we don't know how to resume from this. The function returns 0
693 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200694 */
Willy Tarreauce8fe252011-09-07 19:14:57 +0200695int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200696{
697 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +0200698
699 if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
700 p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
701 return 1;
702
703 Warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
704 send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
705
Willy Tarreau4348fad2012-09-20 16:48:07 +0200706 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreaube58c382011-07-24 18:28:10 +0200707 if (!pause_listener(l))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200708 p->state = PR_STERROR;
709 }
Willy Tarreauce8fe252011-09-07 19:14:57 +0200710
711 if (p->state == PR_STERROR) {
712 Warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
713 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
714 return 0;
715 }
716
717 p->state = PR_STPAUSED;
718 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +0200719}
720
721
722/*
723 * This function completely stops a proxy and releases its listeners. It has
724 * to be called when going down in order to release the ports so that another
725 * process may bind to them. It must also be called on disabled proxies at the
726 * end of start-up. When all listeners are closed, the proxy is set to the
727 * PR_STSTOPPED state.
728 */
729void stop_proxy(struct proxy *p)
730{
731 struct listener *l;
732
Willy Tarreau4348fad2012-09-20 16:48:07 +0200733 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauda250db2008-10-12 12:07:48 +0200734 unbind_listener(l);
735 if (l->state >= LI_ASSIGNED) {
736 delete_listener(l);
737 listeners--;
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200738 jobs--;
Willy Tarreauda250db2008-10-12 12:07:48 +0200739 }
740 }
741 p->state = PR_STSTOPPED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200742}
743
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200744/* This function resumes listening on the specified proxy. It scans all of its
745 * listeners and tries to enable them all. If any of them fails, the proxy is
746 * put back to the paused state. It returns 1 upon success, or zero if an error
747 * is encountered.
748 */
749int resume_proxy(struct proxy *p)
750{
751 struct listener *l;
752 int fail;
753
754 if (p->state != PR_STPAUSED)
755 return 1;
756
757 Warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
758 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
759
760 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200761 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200762 if (!resume_listener(l)) {
763 int port;
764
765 port = get_host_port(&l->addr);
766 if (port) {
767 Warning("Port %d busy while trying to enable %s %s.\n",
768 port, proxy_cap_str(p->cap), p->id);
769 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
770 port, proxy_cap_str(p->cap), p->id);
771 }
772 else {
773 Warning("Bind on socket %d busy while trying to enable %s %s.\n",
774 l->luid, proxy_cap_str(p->cap), p->id);
775 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
776 l->luid, proxy_cap_str(p->cap), p->id);
777 }
778
779 /* Another port might have been enabled. Let's stop everything. */
780 fail = 1;
781 break;
782 }
783 }
784
785 p->state = PR_STREADY;
786 if (fail) {
787 pause_proxy(p);
788 return 0;
789 }
790 return 1;
791}
792
Willy Tarreaubaaee002006-06-26 02:48:02 +0200793/*
794 * This function temporarily disables listening so that another new instance
795 * can start listening. It is designed to be called upon reception of a
796 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
797 * the proxy, or a SIGTTIN can be sent to listen again.
798 */
799void pause_proxies(void)
800{
801 int err;
802 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +0200803 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200804
805 err = 0;
806 p = proxy;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200807 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200808 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +0200809 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200810 p = p->next;
811 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +0200812
813 prs = peers;
814 while (prs) {
815 p = prs->peers_fe;
Willy Tarreauce8fe252011-09-07 19:14:57 +0200816 err |= !pause_proxy(p);
817 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +0200818 }
819
Willy Tarreaubaaee002006-06-26 02:48:02 +0200820 if (err) {
821 Warning("Some proxies refused to pause, performing soft stop now.\n");
822 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
823 soft_stop();
824 }
825}
826
827
828/*
829 * This function reactivates listening. This can be used after a call to
830 * sig_pause(), for example when a new instance has failed starting up.
831 * It is designed to be called upon reception of a SIGTTIN.
832 */
Willy Tarreaube58c382011-07-24 18:28:10 +0200833void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200834{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200835 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200836 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200837 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200838
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200839 err = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200840 p = proxy;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200841 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200842 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200843 err |= !resume_proxy(p);
844 p = p->next;
845 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200846
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200847 prs = peers;
848 while (prs) {
849 p = prs->peers_fe;
850 err |= !resume_proxy(p);
851 prs = prs->next;
852 }
Willy Tarreaube58c382011-07-24 18:28:10 +0200853
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200854 if (err) {
855 Warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
856 send_log(p, LOG_WARNING, "Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200857 }
858}
859
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200860/* Set current session's backend to <be>. Nothing is done if the
861 * session already had a backend assigned, which is indicated by
862 * s->flags & SN_BE_ASSIGNED.
863 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +0200864 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200865 */
Willy Tarreaubedb9ba2009-07-12 08:27:39 +0200866int session_set_backend(struct session *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200867{
868 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +0200869 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200870 s->be = be;
871 be->beconn++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100872 if (be->beconn > be->be_counters.conn_max)
873 be->be_counters.conn_max = be->beconn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200874 proxy_inc_be_ctr(be);
875
876 /* assign new parameters to the session from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +0200877 s->si[1].flags &= ~SI_FL_INDEP_STR;
878 if (be->options2 & PR_O2_INDEPSTR)
879 s->si[1].flags |= SI_FL_INDEP_STR;
880
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200881 if (be->options2 & PR_O2_RSPBUG_OK)
882 s->txn.rsp.err_pos = -1; /* let buggy responses pass */
883 s->flags |= SN_BE_ASSIGNED;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200884
885 /* If the target backend requires HTTP processing, we have to allocate
886 * a struct hdr_idx for it if we did not have one.
887 */
Willy Tarreau25320b22013-03-24 07:22:08 +0100888 if (unlikely(!s->txn.hdr_idx.v && be->http_needed)) {
Willy Tarreau34eb6712011-10-24 18:15:04 +0200889 if ((s->txn.hdr_idx.v = pool_alloc2(pool2_hdr_idx)) == NULL)
Willy Tarreau51aecc72009-07-12 09:47:04 +0200890 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +0200891
892 /* and now initialize the HTTP transaction state */
893 http_init_txn(s);
894
Willy Tarreauac1932d2011-10-24 19:14:41 +0200895 s->txn.hdr_idx.size = global.tune.max_http_hdr;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200896 hdr_idx_init(&s->txn.hdr_idx);
897 }
898
Willy Tarreau80a92c02014-03-12 10:41:13 +0100899 /* If an LB algorithm needs to access some pre-parsed body contents,
900 * we must not start to forward anything until the connection is
901 * confirmed otherwise we'll lose the pointer to these data and
902 * prevent the hash from being doable again after a redispatch.
903 */
904 if (be->mode == PR_MODE_HTTP &&
905 (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM))
906 s->txn.req.flags |= HTTP_MSGF_WAIT_CONN;
907
Willy Tarreau96e31212011-05-30 18:10:30 +0200908 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200909 s->req->flags |= CF_NEVER_WAIT;
910 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200911 }
912
Willy Tarreauc1a21672009-08-16 22:37:44 +0200913 /* We want to enable the backend-specific analysers except those which
914 * were already run as part of the frontend/listener. Note that it would
915 * be more reliable to store the list of analysers that have been run,
916 * but what we do here is OK for now.
Emeric Brun647caf12009-06-30 17:57:00 +0200917 */
Willy Tarreauc1a21672009-08-16 22:37:44 +0200918 s->req->analysers |= be->be_req_ana & ~(s->listener->analysers);
Emeric Brun647caf12009-06-30 17:57:00 +0200919
Willy Tarreaubedb9ba2009-07-12 08:27:39 +0200920 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200921}
922
Willy Tarreaudc13c112013-06-21 23:16:39 +0200923static struct cfg_kw_list cfg_kws = {ILH, {
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200924 { CFG_LISTEN, "timeout", proxy_parse_timeout },
925 { CFG_LISTEN, "clitimeout", proxy_parse_timeout },
926 { CFG_LISTEN, "contimeout", proxy_parse_timeout },
927 { CFG_LISTEN, "srvtimeout", proxy_parse_timeout },
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100928 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200929 { 0, NULL, NULL },
930}};
931
932__attribute__((constructor))
933static void __proxy_module_init(void)
934{
935 cfg_register_keywords(&cfg_kws);
936}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200937
938/*
939 * Local variables:
940 * c-indent-level: 8
941 * c-basic-offset: 8
942 * End:
943 */