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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
28#include <types/global.h>
Willy Tarreau3fdb3662012-11-12 00:42:33 +010029#include <types/obj_type.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020030#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020031
Alexandre Cassen87ea5482007-10-11 20:48:58 +020032#include <proto/backend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020033#include <proto/fd.h>
Willy Tarreau51aecc72009-07-12 09:47:04 +020034#include <proto/hdr_idx.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020035#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <proto/log.h>
Willy Tarreaue6b98942007-10-29 01:09:36 +010037#include <proto/proto_tcp.h>
Willy Tarreau39e4f622010-05-31 17:01:36 +020038#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020039#include <proto/proxy.h>
Willy Tarreaud0807c32010-08-27 18:26:11 +020040#include <proto/signal.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020041#include <proto/task.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020042
43
Willy Tarreau918ff602011-07-25 16:33:49 +020044int listeners; /* # of proxy listeners, set by cfgparse */
Willy Tarreaubaaee002006-06-26 02:48:02 +020045struct proxy *proxy = NULL; /* list of all existing proxies */
Willy Tarreau53fb4ae2009-10-04 23:04:08 +020046struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
Willy Tarreau10479e42010-12-12 14:00:34 +010047unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
Willy Tarreaubaaee002006-06-26 02:48:02 +020048
Willy Tarreau977b8e42006-12-29 14:19:17 +010049/*
Willy Tarreau816eb542007-11-04 07:04:43 +010050 * This function returns a string containing a name describing capabilities to
51 * report comprehensible error messages. Specifically, it will return the words
52 * "frontend", "backend", "ruleset" when appropriate, or "proxy" for all other
53 * cases including the proxies declared in "listen" mode.
Willy Tarreau977b8e42006-12-29 14:19:17 +010054 */
Willy Tarreau816eb542007-11-04 07:04:43 +010055const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +010056{
Willy Tarreau816eb542007-11-04 07:04:43 +010057 if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
58 if (cap & PR_CAP_FE)
59 return "frontend";
60 else if (cap & PR_CAP_BE)
61 return "backend";
62 else if (cap & PR_CAP_RS)
63 return "ruleset";
64 }
65 return "proxy";
Willy Tarreau977b8e42006-12-29 14:19:17 +010066}
67
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +010068/*
69 * This function returns a string containing the mode of the proxy in a format
70 * suitable for error messages.
71 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +010072const char *proxy_mode_str(int mode) {
73
74 if (mode == PR_MODE_TCP)
75 return "tcp";
76 else if (mode == PR_MODE_HTTP)
77 return "http";
78 else if (mode == PR_MODE_HEALTH)
79 return "health";
80 else
81 return "unknown";
82}
83
Willy Tarreauf3950172009-10-10 18:35:51 +020084/*
85 * This function scans the list of backends and servers to retrieve the first
86 * backend and the first server with the given names, and sets them in both
87 * parameters. It returns zero if either is not found, or non-zero and sets
88 * the ones it did not found to NULL. If a NULL pointer is passed for the
89 * backend, only the pointer to the server will be updated.
90 */
91int get_backend_server(const char *bk_name, const char *sv_name,
92 struct proxy **bk, struct server **sv)
93{
94 struct proxy *p;
95 struct server *s;
Willy Tarreaucfeaa472009-10-10 22:33:08 +020096 int pid, sid;
Willy Tarreauf3950172009-10-10 18:35:51 +020097
98 *sv = NULL;
99
Willy Tarreau050536d2012-10-04 08:47:34 +0200100 pid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200101 if (*bk_name == '#')
102 pid = atoi(bk_name + 1);
Willy Tarreau050536d2012-10-04 08:47:34 +0200103 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200104 if (*sv_name == '#')
105 sid = atoi(sv_name + 1);
106
Willy Tarreauf3950172009-10-10 18:35:51 +0200107 for (p = proxy; p; p = p->next)
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200108 if ((p->cap & PR_CAP_BE) &&
Willy Tarreau050536d2012-10-04 08:47:34 +0200109 ((pid >= 0 && p->uuid == pid) ||
110 (pid < 0 && strcmp(p->id, bk_name) == 0)))
Willy Tarreauf3950172009-10-10 18:35:51 +0200111 break;
112 if (bk)
113 *bk = p;
114 if (!p)
115 return 0;
116
117 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100118 if ((sid >= 0 && s->puid == sid) ||
119 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200120 break;
121 *sv = s;
122 if (!s)
123 return 0;
124 return 1;
125}
126
Willy Tarreaue219db72007-12-03 01:30:13 +0100127/* This function parses a "timeout" statement in a proxy section. It returns
128 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200129 * return zero, it will write an error or warning message into a preallocated
130 * buffer returned at <err>. The trailing is not be written. The function must
131 * be called with <args> pointing to the first command line word, with <proxy>
132 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
133 * As a special case for compatibility with older configs, it also accepts
134 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100135 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200136static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200137 struct proxy *defpx, const char *file, int line,
138 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100139{
140 unsigned timeout;
141 int retval, cap;
142 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200143 int *tv = NULL;
144 int *td = NULL;
Willy Tarreaue219db72007-12-03 01:30:13 +0100145
146 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200147
148 /* simply skip "timeout" but remain compatible with old form */
149 if (strcmp(args[0], "timeout") == 0)
150 args++;
151
Willy Tarreaue219db72007-12-03 01:30:13 +0100152 name = args[0];
153 if (!strcmp(args[0], "client") || !strcmp(args[0], "clitimeout")) {
154 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100155 tv = &proxy->timeout.client;
156 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100157 cap = PR_CAP_FE;
158 } else if (!strcmp(args[0], "tarpit")) {
159 tv = &proxy->timeout.tarpit;
160 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100161 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100162 } else if (!strcmp(args[0], "http-keep-alive")) {
163 tv = &proxy->timeout.httpka;
164 td = &defpx->timeout.httpka;
165 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100166 } else if (!strcmp(args[0], "http-request")) {
167 tv = &proxy->timeout.httpreq;
168 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200169 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100170 } else if (!strcmp(args[0], "server") || !strcmp(args[0], "srvtimeout")) {
171 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100172 tv = &proxy->timeout.server;
173 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100174 cap = PR_CAP_BE;
175 } else if (!strcmp(args[0], "connect") || !strcmp(args[0], "contimeout")) {
176 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100177 tv = &proxy->timeout.connect;
178 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100179 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100180 } else if (!strcmp(args[0], "check")) {
181 tv = &proxy->timeout.check;
182 td = &defpx->timeout.check;
183 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100184 } else if (!strcmp(args[0], "queue")) {
185 tv = &proxy->timeout.queue;
186 td = &defpx->timeout.queue;
187 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200188 } else if (!strcmp(args[0], "tunnel")) {
189 tv = &proxy->timeout.tunnel;
190 td = &defpx->timeout.tunnel;
191 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100192 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200193 memprintf(err,
194 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreauce887fd2012-05-12 12:50:00 +0200195 "'queue', 'http-keep-alive', 'http-request', 'tunnel' or 'tarpit', (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200196 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100197 return -1;
198 }
199
200 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200201 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100202 return -1;
203 }
204
205 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
206 if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200207 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100208 return -1;
209 }
210
211 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200212 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
213 name, proxy_type_str(proxy), proxy->id,
214 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100215 retval = 1;
216 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200217 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200218 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100219 retval = 1;
220 }
221
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200222 *tv = MS_TO_TICKS(timeout);
Willy Tarreaue219db72007-12-03 01:30:13 +0100223 return retval;
224}
225
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100226/* This function parses a "rate-limit" statement in a proxy section. It returns
227 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200228 * return zero, it will write an error or warning message into a preallocated
229 * buffer returned at <err>. The function must be called with <args> pointing
230 * to the first command line word, with <proxy> pointing to the proxy being
231 * parsed, and <defpx> to the default proxy or NULL.
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100232 */
233static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200234 struct proxy *defpx, const char *file, int line,
235 char **err)
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100236{
237 int retval, cap;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200238 char *res;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100239 unsigned int *tv = NULL;
240 unsigned int *td = NULL;
241 unsigned int val;
242
243 retval = 0;
244
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200245 if (strcmp(args[1], "sessions") == 0) {
Willy Tarreau13a34bd2009-05-10 18:52:49 +0200246 tv = &proxy->fe_sps_lim;
247 td = &defpx->fe_sps_lim;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100248 cap = PR_CAP_FE;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200249 }
250 else {
251 memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100252 return -1;
253 }
254
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200255 if (*args[2] == 0) {
256 memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100257 return -1;
258 }
259
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200260 val = strtoul(args[2], &res, 0);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100261 if (*res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200262 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 +0100263 return -1;
264 }
265
266 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200267 memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability",
268 args[0], args[1], proxy_type_str(proxy), proxy->id,
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100269 (cap & PR_CAP_BE) ? "backend" : "frontend");
270 retval = 1;
271 }
272 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200273 memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100274 retval = 1;
275 }
276
277 *tv = val;
278 return retval;
279}
280
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100281/*
282 * This function finds a proxy with matching name, mode and with satisfying
283 * capabilities. It also checks if there are more matching proxies with
284 * requested name as this often leads into unexpected situations.
285 */
286
Alex Williams96532db2009-11-01 21:27:13 -0500287struct proxy *findproxy_mode(const char *name, int mode, int cap) {
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100288
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100289 struct proxy *curproxy, *target = NULL;
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100290
291 for (curproxy = proxy; curproxy; curproxy = curproxy->next) {
292 if ((curproxy->cap & cap)!=cap || strcmp(curproxy->id, name))
293 continue;
294
Willy Tarreau51aecc72009-07-12 09:47:04 +0200295 if (curproxy->mode != mode &&
296 !(curproxy->mode == PR_MODE_HTTP && mode == PR_MODE_TCP)) {
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100297 Alert("Unable to use proxy '%s' with wrong mode, required: %s, has: %s.\n",
298 name, proxy_mode_str(mode), proxy_mode_str(curproxy->mode));
299 Alert("You may want to use 'mode %s'.\n", proxy_mode_str(mode));
300 return NULL;
301 }
302
303 if (!target) {
304 target = curproxy;
305 continue;
306 }
307
Willy Tarreau816eb542007-11-04 07:04:43 +0100308 Alert("Refusing to use duplicated proxy '%s' with overlapping capabilities: %s/%s!\n",
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100309 name, proxy_type_str(curproxy), proxy_type_str(target));
310
311 return NULL;
312 }
313
314 return target;
315}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200316
Willy Tarreaubc216c42011-08-02 11:25:54 +0200317/* Returns a pointer to the proxy matching either name <name>, or id <name> if
318 * <name> begins with a '#'. NULL is returned if no match is found, as well as
319 * if multiple matches are found (eg: too large capabilities mask).
320 */
Alex Williams96532db2009-11-01 21:27:13 -0500321struct proxy *findproxy(const char *name, int cap) {
322
323 struct proxy *curproxy, *target = NULL;
Willy Tarreau050536d2012-10-04 08:47:34 +0200324 int pid = -1;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200325
326 if (*name == '#')
327 pid = atoi(name + 1);
Alex Williams96532db2009-11-01 21:27:13 -0500328
329 for (curproxy = proxy; curproxy; curproxy = curproxy->next) {
Willy Tarreaubc216c42011-08-02 11:25:54 +0200330 if ((curproxy->cap & cap) != cap ||
Willy Tarreau050536d2012-10-04 08:47:34 +0200331 (pid >= 0 && curproxy->uuid != pid) ||
332 (pid < 0 && strcmp(curproxy->id, name)))
Alex Williams96532db2009-11-01 21:27:13 -0500333 continue;
334
335 if (!target) {
336 target = curproxy;
337 continue;
338 }
339
340 return NULL;
341 }
342
343 return target;
344}
345
Willy Tarreaubaaee002006-06-26 02:48:02 +0200346/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100347 * This function finds a server with matching name within selected proxy.
348 * It also checks if there are more matching servers with
349 * requested name as this often leads into unexpected situations.
350 */
351
352struct server *findserver(const struct proxy *px, const char *name) {
353
354 struct server *cursrv, *target = NULL;
355
356 if (!px)
357 return NULL;
358
359 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
360 if (strcmp(cursrv->id, name))
361 continue;
362
363 if (!target) {
364 target = cursrv;
365 continue;
366 }
367
Cyril Bonté0bb519e2012-04-04 12:57:19 +0200368 Alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100369 name, px->id);
370
371 return NULL;
372 }
373
374 return target;
375}
376
Willy Tarreauff01a212009-03-15 13:46:16 +0100377/* This function checks that the designated proxy has no http directives
378 * enabled. It will output a warning if there are, and will fix some of them.
379 * It returns the number of fatal errors encountered. This should be called
380 * at the end of the configuration parsing if the proxy is not in http mode.
381 * The <file> argument is used to construct the error message.
382 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200383int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100384{
385 if (curproxy->cookie_name != NULL) {
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200386 Warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
387 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100388 }
389 if (curproxy->rsp_exp != NULL) {
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200390 Warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
391 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100392 }
393 if (curproxy->req_exp != NULL) {
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200394 Warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
395 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100396 }
397 if (curproxy->monitor_uri != NULL) {
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200398 Warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
399 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100400 }
Willy Tarreauf3e49f92009-10-03 12:21:20 +0200401 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100402 curproxy->lbprm.algo &= ~BE_LB_ALGO;
403 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200404 Warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
405 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100406 }
Willy Tarreau17804162009-11-09 21:27:51 +0100407 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
408 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Willy Tarreaub1f3af22013-04-12 18:30:32 +0200409 Warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
410 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
Willy Tarreau17804162009-11-09 21:27:51 +0100411 proxy_type_str(curproxy), curproxy->id);
412 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200413 if (curproxy->conf.logformat_string == default_http_log_format ||
414 curproxy->conf.logformat_string == clf_http_log_format) {
415 /* Note: we don't change the directive's file:line number */
416 curproxy->conf.logformat_string = default_tcp_log_format;
417 Warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
418 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
Willy Tarreau196729e2012-05-31 19:30:26 +0200419 proxy_type_str(curproxy), curproxy->id);
420 }
421
Willy Tarreauff01a212009-03-15 13:46:16 +0100422 return 0;
423}
424
Willy Tarreau237250c2011-07-29 01:49:03 +0200425/* Perform the most basic initialization of a proxy :
426 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +0200427 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +0200428 */
429void init_new_proxy(struct proxy *p)
430{
431 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100432 p->obj_type = OBJ_TYPE_PROXY;
Willy Tarreau237250c2011-07-29 01:49:03 +0200433 LIST_INIT(&p->pendconns);
434 LIST_INIT(&p->acl);
435 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200436 LIST_INIT(&p->http_res_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200437 LIST_INIT(&p->block_cond);
438 LIST_INIT(&p->redirect_rules);
439 LIST_INIT(&p->mon_fail_cond);
440 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200441 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200442 LIST_INIT(&p->persist_rules);
443 LIST_INIT(&p->sticking_rules);
444 LIST_INIT(&p->storersp_rules);
445 LIST_INIT(&p->tcp_req.inspect_rules);
446 LIST_INIT(&p->tcp_rep.inspect_rules);
447 LIST_INIT(&p->tcp_req.l4_rules);
448 LIST_INIT(&p->req_add);
449 LIST_INIT(&p->rsp_add);
450 LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +0200451 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +0100452 LIST_INIT(&p->logformat);
William Lallemanda73203e2012-03-12 12:48:57 +0100453 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200454 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +0200455 LIST_INIT(&p->conf.listeners);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200456 LIST_INIT(&p->conf.args.list);
Baptiste Assmann5ecb77f2013-10-06 23:24:13 +0200457 LIST_INIT(&p->tcpcheck_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200458
459 /* Timeouts are defined as -1 */
460 proxy_reset_timeouts(p);
461 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +0200462
463 /* initial uuid is unassigned (-1) */
464 p->uuid = -1;
Willy Tarreau237250c2011-07-29 01:49:03 +0200465}
466
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100467/*
Willy Tarreau2ff76222007-04-09 19:29:56 +0200468 * This function creates all proxy sockets. It should be done very early,
469 * typically before privileges are dropped. The sockets will be registered
470 * but not added to any fd_set, in order not to loose them across the fork().
Willy Tarreau562515c2011-07-25 08:11:52 +0200471 * The proxies also start in READY state because they all have their listeners
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200472 * bound.
Willy Tarreau2ff76222007-04-09 19:29:56 +0200473 *
474 * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
475 * Retryable errors will only be printed if <verbose> is not zero.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200476 */
477int start_proxies(int verbose)
478{
479 struct proxy *curproxy;
480 struct listener *listener;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100481 int lerr, err = ERR_NONE;
482 int pxerr;
483 char msg[100];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200484
485 for (curproxy = proxy; curproxy != NULL; curproxy = curproxy->next) {
486 if (curproxy->state != PR_STNEW)
487 continue; /* already initialized */
488
489 pxerr = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200490 list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
Willy Tarreaue6b98942007-10-29 01:09:36 +0100491 if (listener->state != LI_ASSIGNED)
492 continue; /* already started */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200493
Emeric Bruncf20bf12010-10-22 16:06:11 +0200494 lerr = listener->proto->bind(listener, msg, sizeof(msg));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200495
Willy Tarreaue6b98942007-10-29 01:09:36 +0100496 /* errors are reported if <verbose> is set or if they are fatal */
497 if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
498 if (lerr & ERR_ALERT)
499 Alert("Starting %s %s: %s\n",
500 proxy_type_str(curproxy), curproxy->id, msg);
501 else if (lerr & ERR_WARN)
502 Warning("Starting %s %s: %s\n",
503 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200504 }
505
Willy Tarreaue6b98942007-10-29 01:09:36 +0100506 err |= lerr;
507 if (lerr & (ERR_ABORT | ERR_FATAL)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200508 pxerr |= 1;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100509 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200510 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100511 else if (lerr & ERR_CODE) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200512 pxerr |= 1;
513 continue;
514 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200515 }
516
517 if (!pxerr) {
Willy Tarreau562515c2011-07-25 08:11:52 +0200518 curproxy->state = PR_STREADY;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200519 send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
520 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100521
522 if (err & ERR_ABORT)
523 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200524 }
525
526 return err;
527}
528
529
530/*
Willy Tarreau918ff602011-07-25 16:33:49 +0200531 * This is the proxy management task. It enables proxies when there are enough
532 * free sessions, or stops them when the table is full. It is designed to be
533 * called as a task which is woken up upon stopping or when rate limiting must
534 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200535 */
Willy Tarreau918ff602011-07-25 16:33:49 +0200536struct task *manage_proxy(struct task *t)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200537{
Willy Tarreau918ff602011-07-25 16:33:49 +0200538 struct proxy *p = t->context;
539 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +0100540 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200541
Willy Tarreau918ff602011-07-25 16:33:49 +0200542 /* We should periodically try to enable listeners waiting for a
543 * global resource here.
544 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200545
Willy Tarreau918ff602011-07-25 16:33:49 +0200546 /* first, let's check if we need to stop the proxy */
547 if (unlikely(stopping && p->state != PR_STSTOPPED)) {
548 int t;
549 t = tick_remain(now_ms, p->stop_time);
550 if (t == 0) {
551 Warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
552 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
553 send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
554 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
555 stop_proxy(p);
556 /* try to free more memory */
557 pool_gc2();
558 }
559 else {
560 next = tick_first(next, p->stop_time);
561 }
562 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200563
Willy Tarreau3a925c12013-09-04 17:54:01 +0200564 /* If the proxy holds a stick table, we need to purge all unused
565 * entries. These are all the ones in the table with ref_cnt == 0
566 * and all the ones in the pool used to allocate new entries. Any
567 * entry attached to an existing session waiting for a store will
568 * be in neither list. Any entry being dumped will have ref_cnt > 0.
569 * However we protect tables that are being synced to peers.
570 */
571 if (unlikely(stopping && p->state == PR_STSTOPPED && p->table.current)) {
572 if (!p->table.syncing) {
573 stktable_trash_oldest(&p->table, p->table.current);
574 pool_gc2();
575 }
576 if (p->table.current) {
577 /* some entries still remain, let's recheck in one second */
578 next = tick_first(next, tick_add(now_ms, 1000));
579 }
580 }
581
Willy Tarreau918ff602011-07-25 16:33:49 +0200582 /* the rest below is just for frontends */
583 if (!(p->cap & PR_CAP_FE))
584 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200585
Willy Tarreau918ff602011-07-25 16:33:49 +0200586 /* check the various reasons we may find to block the frontend */
587 if (unlikely(p->feconn >= p->maxconn)) {
588 if (p->state == PR_STREADY)
589 p->state = PR_STFULL;
590 goto out;
591 }
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100592
Willy Tarreau918ff602011-07-25 16:33:49 +0200593 /* OK we have no reason to block, so let's unblock if we were blocking */
594 if (p->state == PR_STFULL)
595 p->state = PR_STREADY;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100596
Willy Tarreau918ff602011-07-25 16:33:49 +0200597 if (p->fe_sps_lim &&
598 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
599 /* we're blocking because a limit was reached on the number of
600 * requests/s on the frontend. We want to re-check ASAP, which
601 * means in 1 ms before estimated expiration date, because the
602 * timer will have settled down.
603 */
604 next = tick_first(next, tick_add(now_ms, wait));
605 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200606 }
Willy Tarreau918ff602011-07-25 16:33:49 +0200607
608 /* The proxy is not limited so we can re-enable any waiting listener */
609 if (!LIST_ISEMPTY(&p->listener_queue))
610 dequeue_all_listeners(&p->listener_queue);
611 out:
612 t->expire = next;
613 task_queue(t);
614 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200615}
616
617
618/*
619 * this function disables health-check servers so that the process will quickly be ignored
620 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
621 * time will not be used since it would already not listen anymore to the socket.
622 */
623void soft_stop(void)
624{
625 struct proxy *p;
Willy Tarreaubbe11b12011-07-25 11:16:24 +0200626 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200627
628 stopping = 1;
629 p = proxy;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200630 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200631 while (p) {
632 if (p->state != PR_STSTOPPED) {
Willy Tarreauf8fbcef2008-10-10 17:51:34 +0200633 Warning("Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace);
634 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 +0200635 p->stop_time = tick_add(now_ms, p->grace);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200636 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +0200637 if (p->table.size && p->table.sync_task)
638 task_wakeup(p->table.sync_task, TASK_WOKEN_MSG);
639
Willy Tarreau918ff602011-07-25 16:33:49 +0200640 /* wake every proxy task up so that they can handle the stopping */
Willy Tarreaud1a33e32012-10-04 00:14:33 +0200641 if (p->task)
642 task_wakeup(p->task, TASK_WOKEN_MSG);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200643 p = p->next;
644 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +0200645
646 prs = peers;
647 while (prs) {
648 stop_proxy((struct proxy *)prs->peers_fe);
649 prs = prs->next;
650 }
Willy Tarreaud0807c32010-08-27 18:26:11 +0200651 /* signal zero is used to broadcast the "stopping" event */
652 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200653}
654
655
Willy Tarreaube58c382011-07-24 18:28:10 +0200656/* Temporarily disables listening on all of the proxy's listeners. Upon
657 * success, the proxy enters the PR_PAUSED state. If disabling at least one
658 * listener returns an error, then the proxy state is set to PR_STERROR
Willy Tarreauce8fe252011-09-07 19:14:57 +0200659 * because we don't know how to resume from this. The function returns 0
660 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200661 */
Willy Tarreauce8fe252011-09-07 19:14:57 +0200662int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200663{
664 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +0200665
666 if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
667 p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
668 return 1;
669
670 Warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
671 send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
672
Willy Tarreau4348fad2012-09-20 16:48:07 +0200673 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreaube58c382011-07-24 18:28:10 +0200674 if (!pause_listener(l))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200675 p->state = PR_STERROR;
676 }
Willy Tarreauce8fe252011-09-07 19:14:57 +0200677
678 if (p->state == PR_STERROR) {
679 Warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
680 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
681 return 0;
682 }
683
684 p->state = PR_STPAUSED;
685 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +0200686}
687
688
689/*
690 * This function completely stops a proxy and releases its listeners. It has
691 * to be called when going down in order to release the ports so that another
692 * process may bind to them. It must also be called on disabled proxies at the
693 * end of start-up. When all listeners are closed, the proxy is set to the
694 * PR_STSTOPPED state.
695 */
696void stop_proxy(struct proxy *p)
697{
698 struct listener *l;
699
Willy Tarreau4348fad2012-09-20 16:48:07 +0200700 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauda250db2008-10-12 12:07:48 +0200701 unbind_listener(l);
702 if (l->state >= LI_ASSIGNED) {
703 delete_listener(l);
704 listeners--;
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200705 jobs--;
Willy Tarreauda250db2008-10-12 12:07:48 +0200706 }
707 }
708 p->state = PR_STSTOPPED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200709}
710
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200711/* This function resumes listening on the specified proxy. It scans all of its
712 * listeners and tries to enable them all. If any of them fails, the proxy is
713 * put back to the paused state. It returns 1 upon success, or zero if an error
714 * is encountered.
715 */
716int resume_proxy(struct proxy *p)
717{
718 struct listener *l;
719 int fail;
720
721 if (p->state != PR_STPAUSED)
722 return 1;
723
724 Warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
725 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
726
727 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200728 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200729 if (!resume_listener(l)) {
730 int port;
731
732 port = get_host_port(&l->addr);
733 if (port) {
734 Warning("Port %d busy while trying to enable %s %s.\n",
735 port, proxy_cap_str(p->cap), p->id);
736 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
737 port, proxy_cap_str(p->cap), p->id);
738 }
739 else {
740 Warning("Bind on socket %d busy while trying to enable %s %s.\n",
741 l->luid, proxy_cap_str(p->cap), p->id);
742 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
743 l->luid, proxy_cap_str(p->cap), p->id);
744 }
745
746 /* Another port might have been enabled. Let's stop everything. */
747 fail = 1;
748 break;
749 }
750 }
751
752 p->state = PR_STREADY;
753 if (fail) {
754 pause_proxy(p);
755 return 0;
756 }
757 return 1;
758}
759
Willy Tarreaubaaee002006-06-26 02:48:02 +0200760/*
761 * This function temporarily disables listening so that another new instance
762 * can start listening. It is designed to be called upon reception of a
763 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
764 * the proxy, or a SIGTTIN can be sent to listen again.
765 */
766void pause_proxies(void)
767{
768 int err;
769 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +0200770 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200771
772 err = 0;
773 p = proxy;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200774 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200775 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +0200776 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200777 p = p->next;
778 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +0200779
780 prs = peers;
781 while (prs) {
782 p = prs->peers_fe;
Willy Tarreauce8fe252011-09-07 19:14:57 +0200783 err |= !pause_proxy(p);
784 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +0200785 }
786
Willy Tarreaubaaee002006-06-26 02:48:02 +0200787 if (err) {
788 Warning("Some proxies refused to pause, performing soft stop now.\n");
789 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
790 soft_stop();
791 }
792}
793
794
795/*
796 * This function reactivates listening. This can be used after a call to
797 * sig_pause(), for example when a new instance has failed starting up.
798 * It is designed to be called upon reception of a SIGTTIN.
799 */
Willy Tarreaube58c382011-07-24 18:28:10 +0200800void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200801{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200802 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200803 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200804 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200805
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200806 err = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200807 p = proxy;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200808 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200809 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200810 err |= !resume_proxy(p);
811 p = p->next;
812 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200813
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200814 prs = peers;
815 while (prs) {
816 p = prs->peers_fe;
817 err |= !resume_proxy(p);
818 prs = prs->next;
819 }
Willy Tarreaube58c382011-07-24 18:28:10 +0200820
Willy Tarreauc03ebbf2011-09-07 21:33:14 +0200821 if (err) {
822 Warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
823 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 +0200824 }
825}
826
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200827/* Set current session's backend to <be>. Nothing is done if the
828 * session already had a backend assigned, which is indicated by
829 * s->flags & SN_BE_ASSIGNED.
830 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +0200831 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200832 */
Willy Tarreaubedb9ba2009-07-12 08:27:39 +0200833int session_set_backend(struct session *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200834{
835 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +0200836 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200837 s->be = be;
838 be->beconn++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100839 if (be->beconn > be->be_counters.conn_max)
840 be->be_counters.conn_max = be->beconn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200841 proxy_inc_be_ctr(be);
842
843 /* assign new parameters to the session from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +0200844 s->si[1].flags &= ~SI_FL_INDEP_STR;
845 if (be->options2 & PR_O2_INDEPSTR)
846 s->si[1].flags |= SI_FL_INDEP_STR;
847
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200848 if (be->options2 & PR_O2_RSPBUG_OK)
849 s->txn.rsp.err_pos = -1; /* let buggy responses pass */
850 s->flags |= SN_BE_ASSIGNED;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200851
852 /* If the target backend requires HTTP processing, we have to allocate
853 * a struct hdr_idx for it if we did not have one.
854 */
Willy Tarreau25320b22013-03-24 07:22:08 +0100855 if (unlikely(!s->txn.hdr_idx.v && be->http_needed)) {
Willy Tarreau34eb6712011-10-24 18:15:04 +0200856 if ((s->txn.hdr_idx.v = pool_alloc2(pool2_hdr_idx)) == NULL)
Willy Tarreau51aecc72009-07-12 09:47:04 +0200857 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +0200858
859 /* and now initialize the HTTP transaction state */
860 http_init_txn(s);
861
Willy Tarreauac1932d2011-10-24 19:14:41 +0200862 s->txn.hdr_idx.size = global.tune.max_http_hdr;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200863 hdr_idx_init(&s->txn.hdr_idx);
864 }
865
Willy Tarreau96e31212011-05-30 18:10:30 +0200866 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200867 s->req->flags |= CF_NEVER_WAIT;
868 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200869 }
870
Willy Tarreauc1a21672009-08-16 22:37:44 +0200871 /* We want to enable the backend-specific analysers except those which
872 * were already run as part of the frontend/listener. Note that it would
873 * be more reliable to store the list of analysers that have been run,
874 * but what we do here is OK for now.
Emeric Brun647caf12009-06-30 17:57:00 +0200875 */
Willy Tarreauc1a21672009-08-16 22:37:44 +0200876 s->req->analysers |= be->be_req_ana & ~(s->listener->analysers);
Emeric Brun647caf12009-06-30 17:57:00 +0200877
Willy Tarreaubedb9ba2009-07-12 08:27:39 +0200878 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200879}
880
Willy Tarreaudc13c112013-06-21 23:16:39 +0200881static struct cfg_kw_list cfg_kws = {ILH, {
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200882 { CFG_LISTEN, "timeout", proxy_parse_timeout },
883 { CFG_LISTEN, "clitimeout", proxy_parse_timeout },
884 { CFG_LISTEN, "contimeout", proxy_parse_timeout },
885 { CFG_LISTEN, "srvtimeout", proxy_parse_timeout },
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100886 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200887 { 0, NULL, NULL },
888}};
889
890__attribute__((constructor))
891static void __proxy_module_init(void)
892{
893 cfg_register_keywords(&cfg_kws);
894}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200895
896/*
897 * Local variables:
898 * c-indent-level: 8
899 * c-basic-offset: 8
900 * End:
901 */