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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
Willy Tarreau87b09662015-04-03 00:22:06 +02002 * Stream management functions.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003 *
Willy Tarreaud28c3532012-04-19 19:28:33 +02004 * Copyright 2000-2012 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 <stdlib.h>
Willy Tarreau81f9aa32010-06-01 17:45:26 +020014#include <unistd.h>
15#include <fcntl.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020016
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020017#include <common/cfgparse.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020018#include <common/config.h>
Willy Tarreau9b28e032012-10-12 23:49:43 +020019#include <common/buffer.h>
Willy Tarreau7c669d72008-06-20 15:04:11 +020020#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020021#include <common/memory.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020022
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020023#include <types/applet.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020024#include <types/capture.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010025#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020026#include <types/filters.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010027#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010028#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020029
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020030#include <proto/acl.h>
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020031#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020032#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010033#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020034#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010035#include <proto/checks.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010036#include <proto/cli.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020037#include <proto/connection.h>
William Lallemand9ed62032016-11-21 17:49:11 +010038#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020039#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020040#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020041#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020042#include <proto/frontend.h>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010043#include <proto/hdr_idx.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010044#include <proto/hlua.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020045#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020046#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020047#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020048#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020049#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010050#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010051#include <proto/proto_http.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020052#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020053#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010054#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020055#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010056#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010057#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010058#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010059#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020060#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020061
Willy Tarreau87b09662015-04-03 00:22:06 +020062struct pool_head *pool2_stream;
63struct list streams;
Willy Tarreaubaaee002006-06-26 02:48:02 +020064
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020065/* List of all use-service keywords. */
66static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
67
Willy Tarreau9903f0e2015-04-04 18:50:31 +020068/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +020069 * handshake, in order to complete initialization of a valid stream. It must be
70 * called with a session (which may be embryonic). It returns the pointer to
71 * the newly created stream, or NULL in case of fatal error. The client-facing
72 * end point is assigned to <origin>, which must be valid. The task's context
73 * is set to the new stream, and its function is set to process_stream().
74 * Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +020075 */
Willy Tarreau73b65ac2015-04-08 18:26:29 +020076struct stream *stream_new(struct session *sess, struct task *t, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +020077{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +020078 struct stream *s;
Willy Tarreau73b65ac2015-04-08 18:26:29 +020079 struct connection *conn = objt_conn(origin);
80 struct appctx *appctx = objt_appctx(origin);
Willy Tarreau2542b532012-08-31 16:01:23 +020081
Willy Tarreau02a0c0e2015-04-04 18:08:21 +020082 if (unlikely((s = pool_alloc2(pool2_stream)) == NULL))
Willy Tarreau02d86382015-04-05 12:00:52 +020083 return s;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +020084
85 /* minimum stream initialization required for an embryonic stream is
86 * fairly low. We need very little to execute L4 ACLs, then we need a
87 * task to make the client-side connection live on its own.
88 * - flags
89 * - stick-entry tracking
90 */
91 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +020092 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +020093 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +020094 s->logs.accept_date = sess->accept_date; /* user-visible date for logging */
95 s->logs.tv_accept = sess->tv_accept; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +020096 /* This function is called just after the handshake, so the handshake duration is
97 * between the accept time and now.
98 */
99 s->logs.t_handshake = tv_ms_elapsed(&sess->tv_accept, &now);
100 s->logs.t_idle = -1;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200101 tv_zero(&s->logs.tv_request);
102 s->logs.t_queue = -1;
103 s->logs.t_connect = -1;
104 s->logs.t_data = -1;
105 s->logs.t_close = 0;
106 s->logs.bytes_in = s->logs.bytes_out = 0;
107 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
108 s->logs.srv_queue_size = 0; /* we will get this number soon */
109
110 /* default logging function */
111 s->do_log = strm_log;
112
113 /* default error reporting function, may be changed by analysers */
114 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200115
116 /* Initialise the current rule list pointer to NULL. We are sure that
117 * any rulelist match the NULL pointer.
118 */
119 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200120 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200121
Willy Tarreaua68f7622015-09-21 17:48:24 +0200122 /* Copy SC counters for the stream. We don't touch refcounts because
123 * any reference we have is inherited from the session. Since the stream
124 * doesn't exist without the session, the session's existence guarantees
125 * we don't lose the entry. During the store operation, the stream won't
126 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200127 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200128 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200129
130 s->sess = sess;
131 s->si[0].flags = SI_FL_NONE;
132 s->si[1].flags = SI_FL_ISBACK;
133
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200134 s->uniq_id = global.req_count++;
135
Willy Tarreau87b09662015-04-03 00:22:06 +0200136 /* OK, we're keeping the stream, so let's properly initialize the stream */
137 LIST_ADDQ(&streams, &s->list);
Willy Tarreau2542b532012-08-31 16:01:23 +0200138 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100139
140 LIST_INIT(&s->buffer_wait.list);
141 s->buffer_wait.target = s;
142 s->buffer_wait.wakeup_cb = (int (*)(void *))stream_res_wakeup;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200143
Willy Tarreaue7dff022015-04-03 01:14:29 +0200144 s->flags |= SF_INITIALIZED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200145 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200146
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200147 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100148 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200149 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200150 t->context = s;
151 t->expire = TICK_ETERNITY;
152
Willy Tarreau87b09662015-04-03 00:22:06 +0200153 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200154 * This changes later when switching rules are executed or
155 * when the default backend is assigned.
156 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200157 s->be = sess->fe;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100158 s->req.buf = s->res.buf = NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200159 s->req_cap = NULL;
160 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200161
Willy Tarreauebcd4842015-06-19 11:59:02 +0200162 /* Initialise all the variables contexts even if not used.
163 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200164 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200165 vars_init(&s->vars_txn, SCOPE_TXN);
166 vars_init(&s->vars_reqres, SCOPE_REQ);
167
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200168 /* this part should be common with other protocols */
Willy Tarreau819d3322014-11-28 12:12:34 +0100169 si_reset(&s->si[0]);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200170 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100171 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200172
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200173 /* attach the incoming connection to the stream interface now. */
Willy Tarreauf2b98742015-04-05 01:30:42 +0200174 if (conn)
175 si_attach_conn(&s->si[0], conn);
Willy Tarreau470280e2015-04-05 01:33:13 +0200176 else if (appctx)
177 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200178
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200179 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200180 s->si[0].flags |= SI_FL_INDEP_STR;
181
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200182 /* pre-initialize the other side's stream interface to an INIT state. The
183 * callbacks will be initialized before attempting to connect.
184 */
Willy Tarreau819d3322014-11-28 12:12:34 +0100185 si_reset(&s->si[1]);
Hongbo Longe39683c2017-03-10 18:41:51 +0100186 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200187
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200188 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200189 s->si[1].flags |= SI_FL_INDEP_STR;
190
Willy Tarreau87b09662015-04-03 00:22:06 +0200191 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100192 s->target = sess->listener ? sess->listener->default_target : NULL;
193
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200194 s->pend_pos = NULL;
195
196 /* init store persistence */
197 s->store_count = 0;
198
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100199 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100200 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100201 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200202 channel_auto_connect(&s->req); /* don't wait to establish connection */
203 channel_auto_close(&s->req); /* let the producer forward close requests */
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200204
205 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100206 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100207 s->req.rex = TICK_ETERNITY;
208 s->req.wex = TICK_ETERNITY;
209 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200210
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100211 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100212 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100213 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200214
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200215 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100216 s->req.flags |= CF_NEVER_WAIT;
217 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200218 }
219
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200220 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100221 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100222 s->res.rex = TICK_ETERNITY;
223 s->res.wex = TICK_ETERNITY;
224 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200225
Willy Tarreaueee5b512015-04-03 23:46:31 +0200226 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100227 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100228
Christopher Faulet92d36382015-11-05 13:35:03 +0100229 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200230 goto out_fail_accept;
231
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200232 /* finish initialization of the accepted file descriptor */
Willy Tarreauf2b98742015-04-05 01:30:42 +0200233 if (conn)
234 conn_data_want_recv(conn);
Willy Tarreau470280e2015-04-05 01:33:13 +0200235 else if (appctx)
Willy Tarreaufe127932015-04-21 19:23:39 +0200236 si_applet_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200237
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200238 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200239 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200240
241 /* it is important not to call the wakeup function directly but to
242 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200243 * priorities to tasks. Using multi thread we must be sure that
244 * stream is fully initialized before calling task_wakeup. So
245 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200246 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200247 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200248
249 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200250 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100251 flt_stream_release(s, 0);
Willy Tarreau3b246412014-11-25 17:10:33 +0100252 LIST_DEL(&s->list);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200253 pool_free2(pool2_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200254 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200255}
256
Willy Tarreaubaaee002006-06-26 02:48:02 +0200257/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200258 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200259 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200260static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200261{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200262 struct session *sess = strm_sess(s);
263 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100264 struct bref *bref, *back;
Willy Tarreau76325482017-08-17 15:54:46 +0200265 struct connection *cli_conn = objt_conn(s->si[0].end);
Willy Tarreaua4cda672010-06-06 18:28:49 +0200266 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100267
Willy Tarreaubaaee002006-06-26 02:48:02 +0200268 if (s->pend_pos)
269 pendconn_free(s->pend_pos);
Willy Tarreau922a8062008-12-04 09:33:58 +0100270
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100271 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200272 if (s->flags & SF_CURR_SESS) {
273 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100274 objt_server(s->target)->cur_sess--;
Willy Tarreau1e62de62008-11-11 20:20:02 +0100275 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100276 if (may_dequeue_tasks(objt_server(s->target), s->be))
277 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100278 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100279
Willy Tarreau7c669d72008-06-20 15:04:11 +0200280 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200281 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200282 * it should normally be only the same as the one above,
283 * so this should not happen in fact.
284 */
285 sess_change_server(s, NULL);
286 }
287
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100288 if (s->req.pipe)
289 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100290
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100291 if (s->res.pipe)
292 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100293
Willy Tarreaubf883e02014-11-25 21:10:35 +0100294 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100295 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
296 LIST_DEL(&s->buffer_wait.list);
297 LIST_INIT(&s->buffer_wait.list);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100298 }
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100299 if (s->req.buf->size || s->res.buf->size) {
300 b_drop(&s->req.buf);
301 b_drop(&s->res.buf);
302 offer_buffers(NULL, tasks_run_queue + applets_active_queue);
303 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200304
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100305 hlua_ctx_destroy(s->hlua);
306 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200307 if (s->txn)
308 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100309
Willy Tarreau1e954912012-10-12 17:50:05 +0200310 /* ensure the client-side transport layer is destroyed */
Willy Tarreauf79c8172013-10-21 16:30:56 +0200311 if (cli_conn)
312 conn_force_close(cli_conn);
Willy Tarreau1e954912012-10-12 17:50:05 +0200313
Willy Tarreaua4cda672010-06-06 18:28:49 +0200314 for (i = 0; i < s->store_count; i++) {
315 if (!s->store[i].ts)
316 continue;
317 stksess_free(s->store[i].table, s->store[i].ts);
318 s->store[i].ts = NULL;
319 }
320
Willy Tarreaueee5b512015-04-03 23:46:31 +0200321 if (s->txn) {
322 pool_free2(pool2_hdr_idx, s->txn->hdr_idx.v);
323 pool_free2(pool2_http_txn, s->txn);
324 s->txn = NULL;
325 }
326
Christopher Fauletd7c91962015-04-30 11:48:27 +0200327 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100328 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200329
Willy Tarreau92fb9832007-10-16 17:34:28 +0200330 if (fe) {
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200331 pool_free2(fe->rsp_cap_pool, s->res_cap);
332 pool_free2(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200333 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100334
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200335 /* Cleanup all variable contexts. */
Willy Tarreau6204cd92016-03-10 16:33:04 +0100336 vars_prune(&s->vars_txn, s->sess, s);
337 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200338
Willy Tarreau87b09662015-04-03 00:22:06 +0200339 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200340
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100341 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100342 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200343 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100344 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100345 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100346 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200347 if (s->list.n != &streams)
348 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100349 bref->ref = s->list.n;
350 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100351 LIST_DEL(&s->list);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200352 si_release_endpoint(&s->si[1]);
353 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200354
355 /* FIXME: for now we have a 1:1 relation between stream and session so
356 * the stream must free the session.
357 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200358 pool_free2(pool2_stream, s);
Willy Tarreau11c36242015-04-04 15:54:03 +0200359 session_free(sess);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200360
361 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200362 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200363 pool_flush2(pool2_buffer);
Willy Tarreau63986c72015-04-03 22:55:33 +0200364 pool_flush2(pool2_http_txn);
Willy Tarreau34eb6712011-10-24 18:15:04 +0200365 pool_flush2(pool2_hdr_idx);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200366 pool_flush2(pool2_requri);
367 pool_flush2(pool2_capture);
Willy Tarreau87b09662015-04-03 00:22:06 +0200368 pool_flush2(pool2_stream);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200369 pool_flush2(pool2_session);
Willy Tarreau3a5e0602014-11-13 16:46:28 +0100370 pool_flush2(pool2_connection);
371 pool_flush2(pool2_pendconn);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200372 pool_flush2(fe->req_cap_pool);
373 pool_flush2(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200374 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200375}
376
Willy Tarreau656859d2014-11-25 19:46:36 +0100377
Willy Tarreau87b09662015-04-03 00:22:06 +0200378/* Allocates a work buffer for stream <s>. It is meant to be called inside
379 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200380 * to work fine, which is the response buffer so that an error message may be
381 * built and returned. Response buffers may be allocated from the reserve, this
382 * is critical to ensure that a response may always flow and will never block a
383 * server from releasing a connection. Returns 0 in case of failure, non-zero
384 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100385 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100386static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100387{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100388 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
389 LIST_DEL(&s->buffer_wait.list);
390 LIST_INIT(&s->buffer_wait.list);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100391 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100392
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200393 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100394 return 1;
395
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100396 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Willy Tarreau656859d2014-11-25 19:46:36 +0100397 return 0;
398}
399
400/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100401 * update() functions. It will try to wake up as many tasks/applets as the
402 * number of buffers that it releases. In practice, most often streams are
403 * blocked on a single buffer, so it makes sense to try to wake two up when two
404 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100405 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200406void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100407{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100408 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100409
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100410 if (s->req.buf->size && buffer_empty(s->req.buf)) {
411 offer = 1;
412 b_free(&s->req.buf);
413 }
414 if (s->res.buf->size && buffer_empty(s->res.buf)) {
415 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100416 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100417 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100418
Willy Tarreaubf883e02014-11-25 21:10:35 +0100419 /* if we're certain to have at least 1 buffer available, and there is
420 * someone waiting, we can wake up a waiter and offer them.
421 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100422 if (offer)
423 offer_buffers(s, tasks_run_queue + applets_active_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100424}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200425
426/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200427int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200428{
Willy Tarreau87b09662015-04-03 00:22:06 +0200429 LIST_INIT(&streams);
430 pool2_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
431 return pool2_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200432}
433
Willy Tarreau87b09662015-04-03 00:22:06 +0200434void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100435{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200436 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100437 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200438 void *ptr1,*ptr2;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100439 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100440
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100441 bytes = s->req.total - s->logs.bytes_in;
442 s->logs.bytes_in = s->req.total;
443 if (bytes) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200444 sess->fe->fe_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100445
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100446 s->be->be_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100447
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100448 if (objt_server(s->target))
449 objt_server(s->target)->counters.bytes_in += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200450
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200451 if (sess->listener && sess->listener->counters)
452 sess->listener->counters->bytes_in += bytes;
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200453
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100454 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200455 struct stkctr *stkctr = &s->stkctr[i];
456
457 if (!stkctr_entry(stkctr)) {
458 stkctr = &sess->stkctr[i];
459 if (!stkctr_entry(stkctr))
460 continue;
461 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200462
Emeric Brun57056f02015-06-15 18:29:57 +0200463 ptr1 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_CNT);
464 if (ptr1)
465 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200466
Emeric Brun57056f02015-06-15 18:29:57 +0200467 ptr2 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_RATE);
468 if (ptr2)
469 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200470 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Emeric Brun57056f02015-06-15 18:29:57 +0200471
472 /* If data was modified, we need to touch to re-schedule sync */
473 if (ptr1 || ptr2)
474 stktable_touch(stkctr->table, stkctr_entry(stkctr), 1);
Willy Tarreau30e71012007-11-26 20:15:35 +0100475 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100476 }
477
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100478 bytes = s->res.total - s->logs.bytes_out;
479 s->logs.bytes_out = s->res.total;
480 if (bytes) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200481 sess->fe->fe_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100482
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100483 s->be->be_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100484
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100485 if (objt_server(s->target))
486 objt_server(s->target)->counters.bytes_out += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200487
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200488 if (sess->listener && sess->listener->counters)
489 sess->listener->counters->bytes_out += bytes;
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200490
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100491 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200492 struct stkctr *stkctr = &s->stkctr[i];
493
494 if (!stkctr_entry(stkctr)) {
495 stkctr = &sess->stkctr[i];
496 if (!stkctr_entry(stkctr))
497 continue;
498 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200499
Emeric Brun57056f02015-06-15 18:29:57 +0200500 ptr1 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_CNT);
501 if (ptr1)
502 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200503
Emeric Brun57056f02015-06-15 18:29:57 +0200504 ptr2 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_RATE);
505 if (ptr2)
506 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200507 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Emeric Brun57056f02015-06-15 18:29:57 +0200508
509 /* If data was modified, we need to touch to re-schedule sync */
510 if (ptr1 || ptr2)
511 stktable_touch(stkctr->table, stkctr_entry(stkctr), 1);
Willy Tarreau30e71012007-11-26 20:15:35 +0100512 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100513 }
514}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200515
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100516/* This function is called with (si->state == SI_ST_CON) meaning that a
517 * connection was attempted and that the file descriptor is already allocated.
518 * We must check for establishment, error and abort. Possible output states
519 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
520 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200521 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100522 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200523static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100524{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100525 struct stream_interface *si = &s->si[1];
526 struct channel *req = &s->req;
527 struct channel *rep = &s->res;
Willy Tarreau350135c2016-11-17 12:05:13 +0100528 struct connection *srv_conn = __objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100529
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100530 /* If we got an error, or if nothing happened and the connection timed
531 * out, we must give up. The CER state handler will take care of retry
532 * attempts and error reports.
533 */
534 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Willy Tarreau103197d2014-11-28 15:26:12 +0100535 if (unlikely(req->flags & CF_WRITE_PARTIAL)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100536 /* Some data were sent past the connection establishment,
537 * so we need to pretend we're established to log correctly
538 * and let later states handle the failure.
539 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100540 si->state = SI_ST_EST;
541 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100542 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100543 return 1;
544 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100545 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100546 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100547
Willy Tarreau350135c2016-11-17 12:05:13 +0100548 conn_force_close(srv_conn);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100549
550 if (si->err_type)
551 return 0;
552
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100553 if (si->flags & SI_FL_ERR)
554 si->err_type = SI_ET_CONN_ERR;
555 else
556 si->err_type = SI_ET_CONN_TO;
557 return 0;
558 }
559
560 /* OK, maybe we want to abort */
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100561 if (!(req->flags & CF_WRITE_PARTIAL) &&
562 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200563 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
564 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100565 s->be->options & PR_O_ABRT_CLOSE)))) {
566 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200567 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100568 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100569 if (s->srv_error)
570 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100571 return 1;
572 }
573
574 /* we need to wait a bit more if there was no activity either */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200575 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100576 return 1;
577
578 /* OK, this means that a connection succeeded. The caller will be
579 * responsible for handling the transition from CON to EST.
580 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100581 si->state = SI_ST_EST;
582 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100583 return 1;
584}
585
586/* This function is called with (si->state == SI_ST_CER) meaning that a
587 * previous connection attempt has failed and that the file descriptor
588 * has already been released. Possible causes include asynchronous error
589 * notification and time out. Possible output states are SI_ST_CLO when
590 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
591 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
592 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
593 * marked as in error state. It returns 0.
594 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200595static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100596{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100597 struct stream_interface *si = &s->si[1];
Willy Tarreau46d5b082017-07-26 20:13:37 +0200598 struct connection *conn = objt_conn(si->end);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100599
Willy Tarreau87b09662015-04-03 00:22:06 +0200600 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100601 if (objt_server(s->target)) {
602 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100603
Willy Tarreaue7dff022015-04-03 01:14:29 +0200604 if (s->flags & SF_CURR_SESS) {
605 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100606 objt_server(s->target)->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100607 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200608
609 if ((si->flags & SI_FL_ERR) &&
610 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
611 /* We tried to connect to a server which is configured
612 * with "verify required" and which doesn't have the
613 * "verifyhost" directive. The server presented a wrong
614 * certificate (a certificate for an unexpected name),
615 * which implies that we have used SNI in the handshake,
616 * and that the server doesn't have the associated cert
617 * and presented a default one.
618 *
619 * This is a serious enough issue not to retry. It's
620 * especially important because this wrong name might
621 * either be the result of a configuration error, and
622 * retrying will only hammer the server, or is caused
623 * by the use of a wrong SNI value, most likely
624 * provided by the client and we don't want to let the
625 * client provoke retries.
626 */
627 si->conn_retries = 0;
628 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100629 }
630
631 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200632 si->conn_retries--;
633 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100634 if (!si->err_type) {
635 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100636 }
637
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100638 if (objt_server(s->target))
639 objt_server(s->target)->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100640 s->be->be_counters.failed_conns++;
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100641 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100642 if (may_dequeue_tasks(objt_server(s->target), s->be))
643 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100644
645 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200646 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100647 s->req.flags |= CF_WRITE_ERROR;
648 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100649
650 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100651 if (s->srv_error)
652 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100653 return 0;
654 }
655
656 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700657 * retry on another server. By default this redispatch occurs on the
658 * last retry, but if configured we allow redispatches to occur on
659 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200660 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100661 * bit to ignore any persistence cookie. We won't count a retry nor a
662 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200663 * If the connection is not persistent, the balancing algorithm is not
664 * determinist (round robin) and there is more than one active server,
665 * we accept to perform an immediate redispatch without waiting since
666 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100667 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200668 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700669 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Willy Tarreau49008c12016-01-13 07:58:44 +0100670 ((__objt_server(s->target)->state < SRV_ST_RUNNING) ||
671 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700672 ((s->be->conn_retries - si->conn_retries) %
673 s->be->redispatch_after == 0)) ||
674 ((s->be->redispatch_after < 0) &&
675 ((s->be->conn_retries - si->conn_retries) %
676 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200677 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700678 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100679 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100680 if (may_dequeue_tasks(objt_server(s->target), s->be))
681 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100682
Willy Tarreaue7dff022015-04-03 01:14:29 +0200683 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100684 si->state = SI_ST_REQ;
685 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100686 if (objt_server(s->target))
687 objt_server(s->target)->counters.retries++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100688 s->be->be_counters.retries++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100689 si->state = SI_ST_ASS;
690 }
691
692 if (si->flags & SI_FL_ERR) {
693 /* The error was an asynchronous connection error, and we will
694 * likely have to retry connecting to the same server, most
695 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200696 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100697 */
698
Willy Tarreaub0290662014-06-13 17:04:44 +0200699 int delay = 1000;
700
701 if (s->be->timeout.connect && s->be->timeout.connect < delay)
702 delay = s->be->timeout.connect;
703
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100704 if (!si->err_type)
705 si->err_type = SI_ET_CONN_ERR;
706
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200707 /* only wait when we're retrying on the same server */
708 if (si->state == SI_ST_ASS ||
709 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
710 (s->be->srv_act <= 1)) {
711 si->state = SI_ST_TAR;
712 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
713 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100714 return 0;
715 }
716 return 0;
717}
718
719/*
720 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200721 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200722 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100723 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200724static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100725{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100726 struct stream_interface *si = &s->si[1];
727 struct channel *req = &s->req;
728 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100729
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100730 /* First, centralize the timers information */
731 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
732 si->exp = TICK_ETERNITY;
733
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100734 if (objt_server(s->target))
735 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100736
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100737 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100738 /* if the user wants to log as soon as possible, without counting
739 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200740 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100741 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100742 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100743 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100744 }
745 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100746 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100747 }
748
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100749 if (!(s->flags & SF_TUNNEL)) {
750 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100751
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100752 /* Be sure to filter response headers if the backend is an HTTP proxy
753 * and if there are filters attached to the stream. */
754 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
755 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
756 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100757
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200758 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200759 if (req->flags & CF_WAKE_CONNECT) {
760 req->flags |= CF_WAKE_ONCE;
761 req->flags &= ~CF_WAKE_CONNECT;
762 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200763 if (objt_conn(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200764 /* real connections have timeouts */
765 req->wto = s->be->timeout.server;
766 rep->rto = s->be->timeout.server;
767 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100768 req->wex = TICK_ETERNITY;
769}
770
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700771/* Check if the connection request is in such a state that it can be aborted. */
772static int check_req_may_abort(struct channel *req, struct stream *s)
773{
774 return ((req->flags & (CF_READ_ERROR)) ||
775 ((req->flags & CF_SHUTW_NOW) && /* empty and client aborted */
776 (channel_is_empty(req) || s->be->options & PR_O_ABRT_CLOSE)));
777}
778
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100779/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
780 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100781 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
782 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
783 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100784 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200785static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100786{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100787 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100788 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100789 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100790
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100791 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%d rqt=%d rph=%d rpt=%d cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100792 now_ms, __FUNCTION__,
793 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400794 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100795 req->rex, s->res.wex,
796 req->flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -0400797 req->buf->i, req->buf->o, s->res.buf->i, s->res.buf->o, s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100798
799 if (si->state == SI_ST_ASS) {
800 /* Server assigned to connection request, we have to try to connect now */
801 int conn_err;
802
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700803 /* Before we try to initiate the connection, see if the
804 * request may be aborted instead.
805 */
806 if (check_req_may_abort(req, s)) {
807 si->err_type |= SI_ET_CONN_ABRT;
808 goto abort_connection;
809 }
810
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100811 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100812 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100813
Willy Tarreaue7dff022015-04-03 01:14:29 +0200814 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100815 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100816 if (srv)
817 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500818 if (srv)
819 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100820 return;
821 }
822
823 /* We have received a synchronous error. We might have to
824 * abort, retry immediately or redispatch.
825 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200826 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100827 if (!si->err_type) {
828 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100829 }
830
Willy Tarreau827aee92011-03-10 16:55:02 +0100831 if (srv)
832 srv_inc_sess_ctr(srv);
833 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500834 srv_set_sess_last(srv);
835 if (srv)
Willy Tarreau827aee92011-03-10 16:55:02 +0100836 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100837 s->be->be_counters.failed_conns++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100838
Willy Tarreau87b09662015-04-03 00:22:06 +0200839 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100840 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100841 if (may_dequeue_tasks(srv, s->be))
842 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100843
844 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200845 si_shutr(si);
846 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100847 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100848
849 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
850
Willy Tarreau87b09662015-04-03 00:22:06 +0200851 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100852 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100853 if (s->srv_error)
854 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100855 return;
856 }
857
858 /* We are facing a retryable error, but we don't want to run a
859 * turn-around now, as the problem is likely a source port
860 * allocation problem, so we want to retry now.
861 */
862 si->state = SI_ST_CER;
863 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100864 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100865 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
866 return;
867 }
868 else if (si->state == SI_ST_QUE) {
869 /* connection request was queued, check for any update */
870 if (!s->pend_pos) {
871 /* The connection is not in the queue anymore. Either
872 * we have a server connection slot available and we
873 * go directly to the assigned state, or we need to
874 * load-balance first and go to the INI state.
875 */
876 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200877 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100878 si->state = SI_ST_REQ;
879 else {
880 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
881 si->state = SI_ST_ASS;
882 }
883 return;
884 }
885
886 /* Connection request still in queue... */
887 if (si->flags & SI_FL_EXP) {
888 /* ... and timeout expired */
889 si->exp = TICK_ETERNITY;
890 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau827aee92011-03-10 16:55:02 +0100891 if (srv)
892 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100893 s->be->be_counters.failed_conns++;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200894 si_shutr(si);
895 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100896 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100897 if (!si->err_type)
898 si->err_type = SI_ET_QUEUE_TO;
899 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100900 if (s->srv_error)
901 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100902 return;
903 }
904
905 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700906 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100907 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100908 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700909 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100910 }
911
912 /* Nothing changed */
913 return;
914 }
915 else if (si->state == SI_ST_TAR) {
916 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700917 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100918 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700919 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100920 }
921
922 if (!(si->flags & SI_FL_EXP))
923 return; /* still in turn-around */
924
925 si->exp = TICK_ETERNITY;
926
Willy Tarreau87b09662015-04-03 00:22:06 +0200927 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100928 * marked "assigned".
929 * FIXME: Should we force a redispatch attempt when the server is down ?
930 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200931 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100932 si->state = SI_ST_ASS;
933 else
934 si->state = SI_ST_REQ;
935 return;
936 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700937 return;
938
939abort_connection:
940 /* give up */
941 si->exp = TICK_ETERNITY;
942 si_shutr(si);
943 si_shutw(si);
944 si->state = SI_ST_CLO;
945 if (s->srv_error)
946 s->srv_error(s, si);
947 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100948}
949
Willy Tarreau87b09662015-04-03 00:22:06 +0200950/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +0900951 * also counts a failed request if the server state has not reached the request
952 * stage.
953 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200954static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +0900955{
Willy Tarreaue7dff022015-04-03 01:14:29 +0200956 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +0900957 if (s->si[1].state < SI_ST_REQ) {
958
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200959 strm_fe(s)->fe_counters.failed_req++;
Willy Tarreau2c1068c2015-09-23 12:21:21 +0200960 if (strm_li(s) && strm_li(s)->counters)
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200961 strm_li(s)->counters->failed_req++;
Simon Hormandec5be42011-06-08 09:19:07 +0900962
Willy Tarreaue7dff022015-04-03 01:14:29 +0200963 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +0900964 }
965 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200966 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +0900967 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200968 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +0900969 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200970 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +0900971 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200972 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +0900973 }
974}
975
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100976/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +0100977 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
978 * a real connection to a server, indicating that a server has been assigned,
979 * or SI_ST_EST for a successful connection to an applet. It may also return
980 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100981 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200982static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100983{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100984 struct stream_interface *si = &s->si[1];
985
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100986 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%d rqt=%d rph=%d rpt=%d cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100987 now_ms, __FUNCTION__,
988 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400989 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100990 s->req.rex, s->res.wex,
991 s->req.flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -0400992 s->req.buf->i, s->req.buf->o, s->res.buf->i, s->res.buf->o, s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100993
994 if (si->state != SI_ST_REQ)
995 return;
996
Willy Tarreaud84fb5e2013-11-30 09:06:53 +0100997 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
998 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +0100999 struct appctx *appctx = objt_appctx(si->end);
1000
1001 if (!appctx || appctx->applet != __objt_applet(s->target))
1002 appctx = stream_int_register_handler(si, objt_applet(s->target));
1003
1004 if (!appctx) {
1005 /* No more memory, let's immediately abort. Force the
1006 * error code to ignore the ERR_LOCAL which is not a
1007 * real error.
1008 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001009 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001010
1011 si_shutr(si);
1012 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001013 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001014 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001015 si->state = SI_ST_CLO;
1016 if (s->srv_error)
1017 s->srv_error(s, si);
1018 return;
1019 }
1020
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001021 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001022 si->state = SI_ST_EST;
1023 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001024 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001025 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001026 return;
1027 }
1028
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001029 /* Try to assign a server */
1030 if (srv_redispatch_connect(s) != 0) {
1031 /* We did not get a server. Either we queued the
1032 * connection request, or we encountered an error.
1033 */
1034 if (si->state == SI_ST_QUE)
1035 return;
1036
1037 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001038 si_shutr(si);
1039 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001040 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001041 if (!si->err_type)
1042 si->err_type = SI_ET_CONN_OTHER;
1043 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001044 if (s->srv_error)
1045 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001046 return;
1047 }
1048
1049 /* The server is assigned */
1050 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1051 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001052 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001053}
1054
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001055/* This function parses the use-service action ruleset. It executes
1056 * the associated ACL and set an applet as a stream or txn final node.
1057 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1058 * consistent state. It returns ACT_RET_STOP in succes case because
1059 * use-service must be a terminal action. Returns ACT_RET_YIELD
1060 * if the initialisation function require more data.
1061 */
1062enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1063 struct session *sess, struct stream *s, int flags)
1064
1065{
1066 struct appctx *appctx;
1067
1068 /* Initialises the applet if it is required. */
1069 if (flags & ACT_FLAG_FIRST) {
1070 /* Register applet. this function schedules the applet. */
1071 s->target = &rule->applet.obj_type;
1072 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1073 return ACT_RET_ERR;
1074
1075 /* Initialise the context. */
1076 appctx = si_appctx(&s->si[1]);
1077 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1078 appctx->rule = rule;
1079 }
1080 else
1081 appctx = si_appctx(&s->si[1]);
1082
1083 /* Stops the applet sheduling, in case of the init function miss
1084 * some data.
1085 */
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001086 si_applet_stop_get(&s->si[1]);
1087
1088 /* Call initialisation. */
1089 if (rule->applet.init)
1090 switch (rule->applet.init(appctx, px, s)) {
1091 case 0: return ACT_RET_ERR;
1092 case 1: break;
1093 default: return ACT_RET_YIELD;
1094 }
1095
1096 /* Now we can schedule the applet. */
1097 si_applet_cant_get(&s->si[1]);
1098 appctx_wakeup(appctx);
1099
1100 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
1101 sess->fe->fe_counters.intercepted_req++;
1102
1103 /* The flag SF_ASSIGNED prevent from server assignment. */
1104 s->flags |= SF_ASSIGNED;
1105
1106 return ACT_RET_STOP;
1107}
1108
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001109/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001110 * if appropriate. The default_backend rule is also considered, then the
1111 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001112 * It returns 1 if the processing can continue on next analysers, or zero if it
1113 * either needs more data or wants to immediately abort the request.
1114 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001115static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001116{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001117 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001118 struct session *sess = s->sess;
1119 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001120
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001121 req->analysers &= ~an_bit;
1122 req->analyse_exp = TICK_ETERNITY;
1123
Willy Tarreau87b09662015-04-03 00:22:06 +02001124 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001125 now_ms, __FUNCTION__,
1126 s,
1127 req,
1128 req->rex, req->wex,
1129 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001130 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001131 req->analysers);
1132
1133 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001134 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001135 struct switching_rule *rule;
1136
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001137 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001138 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001139
Willy Tarreauf51658d2014-04-23 01:21:56 +02001140 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001141 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001142 ret = acl_pass(ret);
1143 if (rule->cond->pol == ACL_COND_UNLESS)
1144 ret = !ret;
1145 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001146
1147 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001148 /* If the backend name is dynamic, try to resolve the name.
1149 * If we can't resolve the name, or if any error occurs, break
1150 * the loop and fallback to the default backend.
1151 */
1152 struct proxy *backend;
1153
1154 if (rule->dynamic) {
1155 struct chunk *tmp = get_trash_chunk();
1156 if (!build_logline(s, tmp->str, tmp->size, &rule->be.expr))
1157 break;
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001158 backend = proxy_be_by_name(tmp->str);
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001159 if (!backend)
1160 break;
1161 }
1162 else
1163 backend = rule->be.backend;
1164
Willy Tarreau87b09662015-04-03 00:22:06 +02001165 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001166 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001167 break;
1168 }
1169 }
1170
1171 /* To ensure correct connection accounting on the backend, we
1172 * have to assign one if it was not set (eg: a listen). This
1173 * measure also takes care of correctly setting the default
1174 * backend if any.
1175 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001176 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001177 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001178 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001179 }
1180
Willy Tarreaufb356202010-08-03 14:02:05 +02001181 /* we don't want to run the TCP or HTTP filters again if the backend has not changed */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001182 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001183 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1184 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001185 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001186 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001187
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001188 /* as soon as we know the backend, we must check if we have a matching forced or ignored
Willy Tarreau87b09662015-04-03 00:22:06 +02001189 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001190 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001191 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001192 int ret = 1;
1193
1194 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001195 ret = acl_exec_cond(prst_rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4de91492010-01-22 19:10:05 +01001196 ret = acl_pass(ret);
1197 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1198 ret = !ret;
1199 }
1200
1201 if (ret) {
1202 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001203 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001204 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001205 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001206 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001207 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001208 break;
1209 }
1210 }
1211
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001212 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001213
1214 sw_failed:
1215 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001216 channel_abort(&s->req);
1217 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001218
Willy Tarreaue7dff022015-04-03 01:14:29 +02001219 if (!(s->flags & SF_ERR_MASK))
1220 s->flags |= SF_ERR_RESOURCE;
1221 if (!(s->flags & SF_FINST_MASK))
1222 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001223
Willy Tarreaueee5b512015-04-03 23:46:31 +02001224 if (s->txn)
1225 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001226 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001227 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001228 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001229}
1230
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001231/* This stream analyser works on a request. It applies all use-server rules on
1232 * it then returns 1. The data must already be present in the buffer otherwise
1233 * they won't match. It always returns 1.
1234 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001235static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001236{
1237 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001238 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001239 struct server_rule *rule;
1240
Willy Tarreau87b09662015-04-03 00:22:06 +02001241 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001242 now_ms, __FUNCTION__,
1243 s,
1244 req,
1245 req->rex, req->wex,
1246 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001247 req->buf->i + req->buf->o,
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001248 req->analysers);
1249
Willy Tarreaue7dff022015-04-03 01:14:29 +02001250 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001251 list_for_each_entry(rule, &px->server_rules, list) {
1252 int ret;
1253
Willy Tarreau192252e2015-04-04 01:47:55 +02001254 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001255 ret = acl_pass(ret);
1256 if (rule->cond->pol == ACL_COND_UNLESS)
1257 ret = !ret;
1258
1259 if (ret) {
1260 struct server *srv = rule->srv.ptr;
1261
Willy Tarreau892337c2014-05-13 23:41:20 +02001262 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001263 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001264 (s->flags & SF_FORCE_PRST)) {
1265 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001266 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001267 break;
1268 }
1269 /* if the server is not UP, let's go on with next rules
1270 * just in case another one is suited.
1271 */
1272 }
1273 }
1274 }
1275
1276 req->analysers &= ~an_bit;
1277 req->analyse_exp = TICK_ETERNITY;
1278 return 1;
1279}
1280
Emeric Brun1d33b292010-01-04 15:47:17 +01001281/* This stream analyser works on a request. It applies all sticking rules on
1282 * it then returns 1. The data must already be present in the buffer otherwise
1283 * they won't match. It always returns 1.
1284 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001285static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001286{
1287 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001288 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001289 struct sticking_rule *rule;
1290
Willy Tarreau87b09662015-04-03 00:22:06 +02001291 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001292 now_ms, __FUNCTION__,
1293 s,
1294 req,
1295 req->rex, req->wex,
1296 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001297 req->buf->i,
Emeric Brun1d33b292010-01-04 15:47:17 +01001298 req->analysers);
1299
1300 list_for_each_entry(rule, &px->sticking_rules, list) {
1301 int ret = 1 ;
1302 int i;
1303
Willy Tarreau9667a802013-12-09 12:52:13 +01001304 /* Only the first stick store-request of each table is applied
1305 * and other ones are ignored. The purpose is to allow complex
1306 * configurations which look for multiple entries by decreasing
1307 * order of precision and to stop at the first which matches.
1308 * An example could be a store of the IP address from an HTTP
1309 * header first, then from the source if not found.
1310 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001311 for (i = 0; i < s->store_count; i++) {
1312 if (rule->table.t == s->store[i].table)
1313 break;
1314 }
1315
1316 if (i != s->store_count)
1317 continue;
1318
1319 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001320 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001321 ret = acl_pass(ret);
1322 if (rule->cond->pol == ACL_COND_UNLESS)
1323 ret = !ret;
1324 }
1325
1326 if (ret) {
1327 struct stktable_key *key;
1328
Willy Tarreau192252e2015-04-04 01:47:55 +02001329 key = stktable_fetch_key(rule->table.t, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->expr, NULL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001330 if (!key)
1331 continue;
1332
1333 if (rule->flags & STK_IS_MATCH) {
1334 struct stksess *ts;
1335
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001336 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001337 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001338 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001339 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001340
1341 /* srv found in table */
Willy Tarreau13c29de2010-06-06 16:40:39 +02001342 ptr = stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
1343 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Emeric Brun1d33b292010-01-04 15:47:17 +01001344 if (node) {
1345 struct server *srv;
1346
1347 srv = container_of(node, struct server, conf.id);
Willy Tarreau892337c2014-05-13 23:41:20 +02001348 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001349 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001350 (s->flags & SF_FORCE_PRST)) {
1351 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001352 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001353 }
1354 }
1355 }
Emeric Brun85e77c72010-09-23 18:16:52 +02001356 stktable_touch(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001357 }
1358 }
1359 if (rule->flags & STK_IS_STORE) {
1360 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1361 struct stksess *ts;
1362
1363 ts = stksess_new(rule->table.t, key);
1364 if (ts) {
1365 s->store[s->store_count].table = rule->table.t;
1366 s->store[s->store_count++].ts = ts;
1367 }
1368 }
1369 }
1370 }
1371 }
1372
1373 req->analysers &= ~an_bit;
1374 req->analyse_exp = TICK_ETERNITY;
1375 return 1;
1376}
1377
1378/* This stream analyser works on a response. It applies all store rules on it
1379 * then returns 1. The data must already be present in the buffer otherwise
1380 * they won't match. It always returns 1.
1381 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001382static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001383{
1384 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001385 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001386 struct sticking_rule *rule;
1387 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001388 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001389
Willy Tarreau87b09662015-04-03 00:22:06 +02001390 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001391 now_ms, __FUNCTION__,
1392 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001393 rep,
1394 rep->rex, rep->wex,
1395 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001396 rep->buf->i,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001397 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001398
1399 list_for_each_entry(rule, &px->storersp_rules, list) {
1400 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001401
Willy Tarreau9667a802013-12-09 12:52:13 +01001402 /* Only the first stick store-response of each table is applied
1403 * and other ones are ignored. The purpose is to allow complex
1404 * configurations which look for multiple entries by decreasing
1405 * order of precision and to stop at the first which matches.
1406 * An example could be a store of a set-cookie value, with a
1407 * fallback to a parameter found in a 302 redirect.
1408 *
1409 * The store-response rules are not allowed to override the
1410 * store-request rules for the same table, but they may coexist.
1411 * Thus we can have up to one store-request entry and one store-
1412 * response entry for the same table at any time.
1413 */
1414 for (i = nbreq; i < s->store_count; i++) {
1415 if (rule->table.t == s->store[i].table)
1416 break;
1417 }
1418
1419 /* skip existing entries for this table */
1420 if (i < s->store_count)
1421 continue;
1422
Emeric Brun1d33b292010-01-04 15:47:17 +01001423 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001424 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001425 ret = acl_pass(ret);
1426 if (rule->cond->pol == ACL_COND_UNLESS)
1427 ret = !ret;
1428 }
1429
1430 if (ret) {
1431 struct stktable_key *key;
1432
Willy Tarreau192252e2015-04-04 01:47:55 +02001433 key = stktable_fetch_key(rule->table.t, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL, rule->expr, NULL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001434 if (!key)
1435 continue;
1436
Willy Tarreau37e340c2013-12-06 23:05:21 +01001437 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001438 struct stksess *ts;
1439
1440 ts = stksess_new(rule->table.t, key);
1441 if (ts) {
1442 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001443 s->store[s->store_count++].ts = ts;
1444 }
1445 }
1446 }
1447 }
1448
1449 /* process store request and store response */
1450 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001451 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001452 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001453
Willy Tarreauc93cd162014-05-13 15:54:22 +02001454 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001455 stksess_free(s->store[i].table, s->store[i].ts);
1456 s->store[i].ts = NULL;
1457 continue;
1458 }
1459
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001460 ts = stktable_lookup(s->store[i].table, s->store[i].ts);
1461 if (ts) {
1462 /* the entry already existed, we can free ours */
Emeric Brun85e77c72010-09-23 18:16:52 +02001463 stktable_touch(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001464 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001465 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001466 else
Emeric Brun85e77c72010-09-23 18:16:52 +02001467 ts = stktable_store(s->store[i].table, s->store[i].ts, 1);
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001468
1469 s->store[i].ts = NULL;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001470 ptr = stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001471 stktable_data_cast(ptr, server_id) = objt_server(s->target)->puid;
Emeric Brun1d33b292010-01-04 15:47:17 +01001472 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001473 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001474
1475 rep->analysers &= ~an_bit;
1476 rep->analyse_exp = TICK_ETERNITY;
1477 return 1;
1478}
1479
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001480/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001481 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001482 */
1483#define UPDATE_ANALYSERS(real, list, back, flag) { \
1484 list = (((list) & ~(flag)) | ~(back)) & (real); \
1485 back = real; \
1486 if (!(list)) \
1487 break; \
1488 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1489 continue; \
1490}
1491
Christopher Fauleta9215b72016-05-11 17:06:28 +02001492/* These 2 following macros call an analayzer for the specified channel if the
1493 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001494 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001495 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001496 * AN_REQ/RES_HTTP_XFER_BODY) */
1497#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1498 { \
1499 if ((list) & (flag)) { \
1500 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001501 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001502 break; \
1503 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1504 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001505 if (!flt_post_analyze((strm), (chn), (flag))) \
1506 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001507 } \
1508 else { \
1509 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1510 break; \
1511 } \
1512 UPDATE_ANALYSERS((chn)->analysers, (list), \
1513 (back), (flag)); \
1514 } \
1515 }
1516
1517#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1518 { \
1519 if ((list) & (flag)) { \
1520 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1521 break; \
1522 UPDATE_ANALYSERS((chn)->analysers, (list), \
1523 (back), (flag)); \
1524 } \
1525 }
1526
Willy Tarreau87b09662015-04-03 00:22:06 +02001527/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001528 * then puts it back to the wait queue in a clean state, or cleans up its
1529 * resources if it must be deleted. Returns in <next> the date the task wants
1530 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1531 * nothing too many times, the request and response buffers flags are monitored
1532 * and each function is called only if at least another function has changed at
1533 * least one flag it is interested in.
1534 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001535struct task *process_stream(struct task *t)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001536{
Willy Tarreau827aee92011-03-10 16:55:02 +01001537 struct server *srv;
Willy Tarreau87b09662015-04-03 00:22:06 +02001538 struct stream *s = t->context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001539 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001540 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001541 unsigned int rq_prod_last, rq_cons_last;
1542 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001543 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001544 struct channel *req, *res;
1545 struct stream_interface *si_f, *si_b;
1546
1547 req = &s->req;
1548 res = &s->res;
1549
1550 si_f = &s->si[0];
1551 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001552
1553 //DPRINTF(stderr, "%s:%d: cs=%d ss=%d(%d) rqf=0x%08x rpf=0x%08x\n", __FUNCTION__, __LINE__,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001554 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001555
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001556 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001557 if (s->txn)
1558 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001559
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001560 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001561 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1562 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001563
1564 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001565 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1566 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001567
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001568 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001569 si_f->flags |= SI_FL_DONT_WAKE;
1570 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001571
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001572 /* update pending events */
1573 s->pending_events |= (t->state & TASK_WOKEN_ANY);
1574
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001575 /* 1a: Check for low level timeouts if needed. We just set a flag on
1576 * stream interfaces when their timeouts have expired.
1577 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001578 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001579 stream_int_check_timeouts(si_f);
1580 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001581
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001582 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001583 * for future reads or writes. Note: this will also concern upper layers
1584 * but we do not touch any other flag. We must be careful and correctly
1585 * detect state changes when calling them.
1586 */
1587
Willy Tarreau8f128b42014-11-28 15:07:47 +01001588 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001589
Willy Tarreau8f128b42014-11-28 15:07:47 +01001590 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1591 si_b->flags |= SI_FL_NOLINGER;
1592 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001593 }
1594
Willy Tarreau8f128b42014-11-28 15:07:47 +01001595 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1596 if (si_f->flags & SI_FL_NOHALF)
1597 si_f->flags |= SI_FL_NOLINGER;
1598 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001599 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001600
Willy Tarreau8f128b42014-11-28 15:07:47 +01001601 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001602
Willy Tarreau8f128b42014-11-28 15:07:47 +01001603 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1604 si_f->flags |= SI_FL_NOLINGER;
1605 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001606 }
1607
Willy Tarreau8f128b42014-11-28 15:07:47 +01001608 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1609 if (si_b->flags & SI_FL_NOHALF)
1610 si_b->flags |= SI_FL_NOLINGER;
1611 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001612 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001613
Christopher Fauleta00d8172016-11-10 14:58:05 +01001614 if (HAS_FILTERS(s))
1615 flt_stream_check_timeouts(s);
1616
Willy Tarreau798f4322012-11-08 14:49:17 +01001617 /* Once in a while we're woken up because the task expires. But
1618 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001619 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001620 * timeout needs to be refreshed.
1621 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001622 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001623 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
1624 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001625 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001626 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001627 si_f->flags &= ~SI_FL_DONT_WAKE;
1628 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001629 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001630 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001631 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001632
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001633 /* below we may emit error messages so we have to ensure that we have
1634 * our buffers properly allocated.
1635 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001636 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001637 /* No buffer available, we've been subscribed to the list of
1638 * buffer waiters, let's wait for our turn.
1639 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001640 si_f->flags &= ~SI_FL_DONT_WAKE;
1641 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001642 goto update_exp_and_leave;
1643 }
1644
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001645 /* 1b: check for low-level errors reported at the stream interface.
1646 * First we check if it's a retryable error (in which case we don't
1647 * want to tell the buffer). Otherwise we report the error one level
1648 * upper by setting flags into the buffers. Note that the side towards
1649 * the client cannot have connect (hence retryable) errors. Also, the
1650 * connection setup code must be able to deal with any type of abort.
1651 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001652 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001653 if (unlikely(si_f->flags & SI_FL_ERR)) {
1654 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1655 si_shutr(si_f);
1656 si_shutw(si_f);
1657 stream_int_report_error(si_f);
1658 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001659 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001660 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001661 if (srv)
1662 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001663 if (!(s->flags & SF_ERR_MASK))
1664 s->flags |= SF_ERR_CLICL;
1665 if (!(s->flags & SF_FINST_MASK))
1666 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001667 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001668 }
1669 }
1670
Willy Tarreau8f128b42014-11-28 15:07:47 +01001671 if (unlikely(si_b->flags & SI_FL_ERR)) {
1672 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1673 si_shutr(si_b);
1674 si_shutw(si_b);
1675 stream_int_report_error(si_b);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001676 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001677 if (srv)
1678 srv->counters.failed_resp++;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001679 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001680 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001681 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001682 if (srv)
1683 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001684 if (!(s->flags & SF_ERR_MASK))
1685 s->flags |= SF_ERR_SRVCL;
1686 if (!(s->flags & SF_FINST_MASK))
1687 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001688 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001689 }
1690 /* note: maybe we should process connection errors here ? */
1691 }
1692
Willy Tarreau8f128b42014-11-28 15:07:47 +01001693 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001694 /* we were trying to establish a connection on the server side,
1695 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1696 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001697 if (unlikely(!sess_update_st_con_tcp(s)))
1698 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001699 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001700 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001701
1702 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1703 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1704 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1705 */
1706 }
1707
Willy Tarreau8f128b42014-11-28 15:07:47 +01001708 rq_prod_last = si_f->state;
1709 rq_cons_last = si_b->state;
1710 rp_cons_last = si_f->state;
1711 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001712
1713 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001714 /* Check for connection closure */
1715
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001716 DPRINTF(stderr,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001717 "[%u] %s:%d: task=%p s=%p, sfl=0x%08x, rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%d rqt=%d rph=%d rpt=%d cs=%d ss=%d, cet=0x%x set=0x%x retr=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001718 now_ms, __FUNCTION__, __LINE__,
1719 t,
1720 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001721 req, res,
1722 req->rex, res->wex,
1723 req->flags, res->flags,
1724 req->buf->i, req->buf->o, res->buf->i, res->buf->o, si_f->state, si_b->state,
1725 si_f->err_type, si_b->err_type,
1726 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001727
1728 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001729 if (unlikely(si_f->state == SI_ST_DIS))
1730 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001731
1732 /* When a server-side connection is released, we have to count it and
1733 * check for pending connections on this server.
1734 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001735 if (unlikely(si_b->state == SI_ST_DIS)) {
1736 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001737 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001738 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001739 if (s->flags & SF_CURR_SESS) {
1740 s->flags &= ~SF_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +01001741 srv->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001742 }
1743 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001744 if (may_dequeue_tasks(srv, s->be))
1745 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001746 }
1747 }
1748
1749 /*
1750 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1751 * at this point.
1752 */
1753
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001754 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001755 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001756 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1757 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
1758 si_f->state != rq_prod_last ||
1759 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001760 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001761 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001762
Willy Tarreau8f128b42014-11-28 15:07:47 +01001763 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001764 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001765 unsigned int ana_list;
1766 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001767
Willy Tarreau90deb182010-01-07 00:20:41 +01001768 /* it's up to the analysers to stop new connections,
1769 * disable reading or closing. Note: if an analyser
1770 * disables any of these bits, it is responsible for
1771 * enabling them again when it disables itself, so
1772 * that other analysers are called in similar conditions.
1773 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001774 channel_auto_read(req);
1775 channel_auto_connect(req);
1776 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001777
1778 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001779 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001780 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001781 * the list when not needed. Any analyser may return 0
1782 * to break out of the loop, either because of missing
1783 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001784 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001785 * analyser, and we may loop again if other analysers
1786 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001787 *
1788 * We build a list of analysers to run. We evaluate all
1789 * of these analysers in the order of the lower bit to
1790 * the higher bit. This ordering is very important.
1791 * An analyser will often add/remove other analysers,
1792 * including itself. Any changes to itself have no effect
1793 * on the loop. If it removes any other analysers, we
1794 * want those analysers not to be called anymore during
1795 * this loop. If it adds an analyser that is located
1796 * after itself, we want it to be scheduled for being
1797 * processed during the loop. If it adds an analyser
1798 * which is located before it, we want it to switch to
1799 * it immediately, even if it has already been called
1800 * once but removed since.
1801 *
1802 * In order to achieve this, we compare the analyser
1803 * list after the call with a copy of it before the
1804 * call. The work list is fed with analyser bits that
1805 * appeared during the call. Then we compare previous
1806 * work list with the new one, and check the bits that
1807 * appeared. If the lowest of these bits is lower than
1808 * the current bit, it means we have enabled a previous
1809 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001810 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001811
Willy Tarreau8f128b42014-11-28 15:07:47 +01001812 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001813 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001814 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001815 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001816 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1817 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1818 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1819 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1820 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001821 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001822 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1823 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1824 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1825 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1826 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1827 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1828 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001829 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001830 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001831 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1832 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001833 break;
1834 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001835 }
Willy Tarreau84455332009-03-15 22:34:05 +01001836
Willy Tarreau8f128b42014-11-28 15:07:47 +01001837 rq_prod_last = si_f->state;
1838 rq_cons_last = si_b->state;
1839 req->flags &= ~CF_WAKE_ONCE;
1840 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001841
Willy Tarreau8f128b42014-11-28 15:07:47 +01001842 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001843 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001844 }
1845
Willy Tarreau576507f2010-01-07 00:09:04 +01001846 /* we'll monitor the request analysers while parsing the response,
1847 * because some response analysers may indirectly enable new request
1848 * analysers (eg: HTTP keep-alive).
1849 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001850 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01001851
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001852 resync_response:
1853 /* Analyse response */
1854
Willy Tarreau8f128b42014-11-28 15:07:47 +01001855 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
1856 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
1857 si_f->state != rp_cons_last ||
1858 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001859 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001860 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001861
Willy Tarreau8f128b42014-11-28 15:07:47 +01001862 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001863 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001864 unsigned int ana_list;
1865 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001866
Willy Tarreau90deb182010-01-07 00:20:41 +01001867 /* it's up to the analysers to stop disable reading or
1868 * closing. Note: if an analyser disables any of these
1869 * bits, it is responsible for enabling them again when
1870 * it disables itself, so that other analysers are called
1871 * in similar conditions.
1872 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001873 channel_auto_read(res);
1874 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001875
1876 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001877 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001878 * to MSB. The analysers must remove themselves from
1879 * the list when not needed. Any analyser may return 0
1880 * to break out of the loop, either because of missing
1881 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001882 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001883 * analyser, and we may loop again if other analysers
1884 * are added in the middle.
1885 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001886
Willy Tarreau8f128b42014-11-28 15:07:47 +01001887 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001888 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001889 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001890 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
1891 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001892 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
1893 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
1894 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
1895 FLT_ANALYZE(s, res, http_process_res_common, ana_list, ana_back, AN_RES_HTTP_PROCESS_BE, s->be);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001896 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001897 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001898 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
1899 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001900 break;
1901 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001902 }
1903
Willy Tarreau8f128b42014-11-28 15:07:47 +01001904 rp_cons_last = si_f->state;
1905 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02001906 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001907 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001908
Willy Tarreau8f128b42014-11-28 15:07:47 +01001909 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001910 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001911 }
1912
Willy Tarreau576507f2010-01-07 00:09:04 +01001913 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001914 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01001915 goto resync_request;
1916
Willy Tarreau8f128b42014-11-28 15:07:47 +01001917 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01001918 goto resync_request;
1919
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001920 /* FIXME: here we should call protocol handlers which rely on
1921 * both buffers.
1922 */
1923
1924
1925 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02001926 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01001927 * we're just in a data phase here since it means we have not
1928 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001929 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001930 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001931 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001932 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001933 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001934 req->analysers = 0;
1935 if (req->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001936 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001937 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001938 if (srv)
1939 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001940 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01001941 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001942 else if (req->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001943 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001944 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001945 if (srv)
1946 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001947 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01001948 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001949 else if (req->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001950 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001951 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001952 if (srv)
1953 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001954 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01001955 }
1956 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001957 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001958 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001959 if (srv)
1960 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001961 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01001962 }
Willy Tarreau84455332009-03-15 22:34:05 +01001963 sess_set_term_flags(s);
1964 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001965 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001966 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001967 res->analysers = 0;
1968 if (res->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001969 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001970 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001971 if (srv)
1972 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001973 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01001974 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001975 else if (res->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001976 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001977 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001978 if (srv)
1979 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001980 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01001981 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001982 else if (res->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001983 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001984 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001985 if (srv)
1986 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001987 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01001988 }
1989 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001990 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001991 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001992 if (srv)
1993 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001994 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01001995 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001996 sess_set_term_flags(s);
1997 }
Willy Tarreau84455332009-03-15 22:34:05 +01001998 }
1999
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002000 /*
2001 * Here we take care of forwarding unhandled data. This also includes
2002 * connection establishments and shutdown requests.
2003 */
2004
2005
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002006 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002007 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002008 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002009 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002010 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002011 if (unlikely(!req->analysers &&
2012 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2013 (si_f->state >= SI_ST_EST) &&
2014 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002015 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002016 * attached to it. If any data are left in, we'll permit them to
2017 * move.
2018 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002019 channel_auto_read(req);
2020 channel_auto_connect(req);
2021 channel_auto_close(req);
2022 buffer_flush(req->buf);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002023
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002024 /* We'll let data flow between the producer (if still connected)
2025 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002026 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002027 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002028 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002029
2030 /* Just in order to support fetching HTTP contents after start
2031 * of forwarding when the HTTP forwarding analyser is not used,
2032 * we simply reset msg->sov so that HTTP rewinding points to the
2033 * headers.
2034 */
2035 if (s->txn)
2036 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - req->buf->o;
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002037 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002038
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002039 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002040 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2041 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002042 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002043 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->rcv_pipe) &&
2044 (objt_conn(si_b->end) && __objt_conn(si_b->end)->xprt && __objt_conn(si_b->end)->xprt->snd_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002045 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002046 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2047 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002048 (req->flags & CF_STREAMER_FAST)))) {
2049 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002050 }
2051
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002052 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002053 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002054
2055 /*
2056 * Now forward all shutdown requests between both sides of the buffer
2057 */
2058
Willy Tarreau520d95e2009-09-19 21:04:57 +02002059 /* first, let's check if the request buffer needs to shutdown(write), which may
2060 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002061 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2062 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002063 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002064 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002065 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002066 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002067 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002068
2069 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002070 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2071 channel_is_empty(req))) {
2072 if (req->flags & CF_READ_ERROR)
2073 si_b->flags |= SI_FL_NOLINGER;
2074 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002075 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002076
2077 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002078 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2079 !req->analysers))
2080 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002081
2082 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002083 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2084 if (si_f->flags & SI_FL_NOHALF)
2085 si_f->flags |= SI_FL_NOLINGER;
2086 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002087 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002088
Willy Tarreau520d95e2009-09-19 21:04:57 +02002089 /* it's possible that an upper layer has requested a connection setup or abort.
2090 * There are 2 situations where we decide to establish a new connection :
2091 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002092 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002093 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002094 if (si_b->state == SI_ST_INI) {
2095 if (!(req->flags & CF_SHUTW)) {
2096 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002097 /* If we have an appctx, there is no connect method, so we
2098 * immediately switch to the connected state, otherwise we
2099 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002100 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002101 si_b->state = SI_ST_REQ; /* new connection requested */
2102 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002103 }
Willy Tarreau73201222009-08-16 18:27:24 +02002104 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002105 else {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002106 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2107 channel_shutw_now(req); /* fix buffer flags upon abort */
2108 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002109 }
Willy Tarreau92795622009-03-06 12:51:23 +01002110 }
2111
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002112
2113 /* we may have a pending connection request, or a connection waiting
2114 * for completion.
2115 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002116 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002117
2118 /* prune the request variables and swap to the response variables. */
2119 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreau6204cd92016-03-10 16:33:04 +01002120 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002121 vars_init(&s->vars_reqres, SCOPE_RES);
2122 }
2123
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002124 do {
2125 /* nb: step 1 might switch from QUE to ASS, but we first want
2126 * to give a chance to step 2 to perform a redirect if needed.
2127 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002128 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002129 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002130 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002131 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002132
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002133 /* applets directly go to the ESTABLISHED state. Similarly,
2134 * servers experience the same fate when their connection
2135 * is reused.
2136 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002137 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002138 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002139
Willy Tarreaub44c8732013-12-31 23:16:50 +01002140 /* Now we can add the server name to a header (if requested) */
2141 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002142 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002143 (s->be->server_id_hdr_name != NULL) &&
2144 (s->be->mode == PR_MODE_HTTP) &&
2145 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002146 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002147 }
2148
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002149 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002150 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002151 http_perform_server_redirect(s, si_b);
2152 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002153 }
2154
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002155 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002156 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002157 goto resync_stream_interface;
2158
Willy Tarreau815a9b22010-07-27 17:15:12 +02002159 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002160 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002161 goto resync_request;
2162
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002163 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002164
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002165 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002166 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002167 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002168 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002169 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002170 if (unlikely(!res->analysers &&
2171 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2172 (si_b->state >= SI_ST_EST) &&
2173 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002174 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002175 * attached to it. If any data are left in, we'll permit them to
2176 * move.
2177 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002178 channel_auto_read(res);
2179 channel_auto_close(res);
2180 buffer_flush(res->buf);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002181
2182 /* We'll let data flow between the producer (if still connected)
2183 * to the consumer.
2184 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002185 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002186 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002187
Willy Tarreau42529c32015-07-09 18:38:57 +02002188 /* Just in order to support fetching HTTP contents after start
2189 * of forwarding when the HTTP forwarding analyser is not used,
2190 * we simply reset msg->sov so that HTTP rewinding points to the
2191 * headers.
2192 */
2193 if (s->txn)
2194 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - res->buf->o;
2195
Willy Tarreauce887fd2012-05-12 12:50:00 +02002196 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002197 * tunnel timeout set, use it now. Note that we must respect
2198 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002199 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002200 if (!req->analysers && s->be->timeout.tunnel) {
2201 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002202 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002203
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002204 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2205 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002206 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2207 res->rto = s->be->timeout.serverfin;
2208 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2209 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002210 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2211 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002212
Willy Tarreau8f128b42014-11-28 15:07:47 +01002213 req->rex = tick_add(now_ms, req->rto);
2214 req->wex = tick_add(now_ms, req->wto);
2215 res->rex = tick_add(now_ms, res->rto);
2216 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002217 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002218 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002219
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002220 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002221 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2222 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002223 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002224 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->snd_pipe) &&
2225 (objt_conn(si_b->end) && __objt_conn(si_b->end)->xprt && __objt_conn(si_b->end)->xprt->rcv_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002226 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002227 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2228 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002229 (res->flags & CF_STREAMER_FAST)))) {
2230 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002231 }
2232
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002233 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002234 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002235
2236 /*
2237 * Now forward all shutdown requests between both sides of the buffer
2238 */
2239
2240 /*
2241 * FIXME: this is probably where we should produce error responses.
2242 */
2243
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002244 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002245 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002246 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002247 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002248 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002249
2250 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002251 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2252 channel_is_empty(res))) {
2253 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002254 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002255
2256 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002257 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2258 !res->analysers)
2259 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002260
2261 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002262 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2263 if (si_b->flags & SI_FL_NOHALF)
2264 si_b->flags |= SI_FL_NOLINGER;
2265 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002266 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002267
Willy Tarreau8f128b42014-11-28 15:07:47 +01002268 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002269 goto resync_stream_interface;
2270
Willy Tarreau8f128b42014-11-28 15:07:47 +01002271 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002272 goto resync_request;
2273
Willy Tarreau8f128b42014-11-28 15:07:47 +01002274 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002275 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002276
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002277 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002278 si_f->flags &= ~SI_FL_DONT_WAKE;
2279 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002280
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002281 /* This is needed only when debugging is enabled, to indicate
2282 * client-side or server-side close. Please note that in the unlikely
2283 * event where both sides would close at once, the sequence is reported
2284 * on the server side first.
2285 */
2286 if (unlikely((global.mode & MODE_DEBUG) &&
2287 (!(global.mode & MODE_QUIET) ||
2288 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002289 if (si_b->state == SI_ST_CLO &&
2290 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002291 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002292 s->uniq_id, s->be->id,
Willy Tarreau8f128b42014-11-28 15:07:47 +01002293 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->t.sock.fd : -1,
2294 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->t.sock.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002295 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002296 }
2297
Willy Tarreau8f128b42014-11-28 15:07:47 +01002298 if (si_f->state == SI_ST_CLO &&
2299 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002300 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002301 s->uniq_id, s->be->id,
Willy Tarreau8f128b42014-11-28 15:07:47 +01002302 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->t.sock.fd : -1,
2303 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->t.sock.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002304 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002305 }
2306 }
2307
Willy Tarreau8f128b42014-11-28 15:07:47 +01002308 if (likely((si_f->state != SI_ST_CLO) ||
2309 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002310
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002311 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002312 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002313
Willy Tarreau563cc372015-04-19 18:13:56 +02002314 if (si_f->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002315 si_update(si_f);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002316
Willy Tarreau563cc372015-04-19 18:13:56 +02002317 if (si_b->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002318 si_update(si_b);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002319
Willy Tarreau8f128b42014-11-28 15:07:47 +01002320 req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2321 res->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2322 si_f->prev_state = si_f->state;
2323 si_b->prev_state = si_b->state;
2324 si_f->flags &= ~(SI_FL_ERR|SI_FL_EXP);
2325 si_b->flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002326
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002327 /* Trick: if a request is being waiting for the server to respond,
2328 * and if we know the server can timeout, we don't want the timeout
2329 * to expire on the client side first, but we're still interested
2330 * in passing data from the client to the server (eg: POST). Thus,
2331 * we can cancel the client's request timeout if the server's
2332 * request timeout is set and the server has not yet sent a response.
2333 */
2334
Willy Tarreau8f128b42014-11-28 15:07:47 +01002335 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2336 (tick_isset(req->wex) || tick_isset(res->rex))) {
2337 req->flags |= CF_READ_NOEXP;
2338 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002339 }
2340
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002341 /* Reset pending events now */
2342 s->pending_events = 0;
2343
Willy Tarreau798f4322012-11-08 14:49:17 +01002344 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002345 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002346 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2347 tick_first(tick_first(req->rex, req->wex),
2348 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002349 if (!req->analysers)
2350 req->analyse_exp = TICK_ETERNITY;
2351
2352 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2353 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2354 req->analyse_exp = tick_add(now_ms, 5000);
2355
2356 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002357
Willy Tarreau8f128b42014-11-28 15:07:47 +01002358 if (si_f->exp)
2359 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002360
Willy Tarreau8f128b42014-11-28 15:07:47 +01002361 if (si_b->exp)
2362 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002363
2364#ifdef DEBUG_FULL
Willy Tarreau127334e2009-03-28 10:47:26 +01002365 fprintf(stderr,
2366 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2367 " rep->rex=%u rep->wex=%u, si[0].exp=%u, si[1].exp=%u, cs=%d, ss=%d\n",
Willy Tarreau8f128b42014-11-28 15:07:47 +01002368 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2369 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002370#endif
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002371
2372#ifdef DEBUG_DEV
2373 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002374 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002375 ABORT_NOW();
2376#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002377 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002378 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002379 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002380 }
2381
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002382 sess->fe->feconn--;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002383 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002384 s->be->beconn--;
Willy Tarreauaf7ad002010-08-31 15:39:26 +02002385 jobs--;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002386 if (sess->listener) {
2387 if (!(sess->listener->options & LI_O_UNLIMITED))
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002388 actconn--;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002389 sess->listener->nbconn--;
2390 if (sess->listener->state == LI_FULL)
2391 resume_listener(sess->listener);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002392
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002393 /* Dequeues all of the listeners waiting for a resource */
2394 if (!LIST_ISEMPTY(&global_listener_queue))
2395 dequeue_all_listeners(&global_listener_queue);
Willy Tarreau08ceb102011-07-24 22:58:00 +02002396
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002397 if (!LIST_ISEMPTY(&sess->fe->listener_queue) &&
2398 (!sess->fe->fe_sps_lim || freq_ctr_remain(&sess->fe->fe_sess_per_sec, sess->fe->fe_sps_lim, 0) > 0))
2399 dequeue_all_listeners(&sess->fe->listener_queue);
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002400 }
Willy Tarreau07687c12011-07-24 23:55:06 +02002401
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002402 if (unlikely((global.mode & MODE_DEBUG) &&
2403 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002404 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002405 s->uniq_id, s->be->id,
Willy Tarreau8f128b42014-11-28 15:07:47 +01002406 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->t.sock.fd : -1,
2407 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->t.sock.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002408 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002409 }
2410
2411 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002412 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002413
Willy Tarreaueee5b512015-04-03 23:46:31 +02002414 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002415 int n;
2416
Willy Tarreaueee5b512015-04-03 23:46:31 +02002417 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002418 if (n < 1 || n > 5)
2419 n = 0;
2420
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002421 if (sess->fe->mode == PR_MODE_HTTP) {
2422 sess->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002423 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002424 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002425 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002426 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002427 s->be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002428 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002429 }
2430
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002431 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002432 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002433 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002434 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002435 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002436 }
2437
Willy Tarreau87b09662015-04-03 00:22:06 +02002438 /* update time stats for this stream */
2439 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002440
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002441 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002442 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002443 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002444 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002445 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002446}
2447
Willy Tarreau87b09662015-04-03 00:22:06 +02002448/* Update the stream's backend and server time stats */
2449void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002450{
2451 int t_request;
2452 int t_queue;
2453 int t_connect;
2454 int t_data;
2455 int t_close;
2456 struct server *srv;
2457
2458 t_request = 0;
2459 t_queue = s->logs.t_queue;
2460 t_connect = s->logs.t_connect;
2461 t_close = s->logs.t_close;
2462 t_data = s->logs.t_data;
2463
2464 if (s->be->mode != PR_MODE_HTTP)
2465 t_data = t_connect;
2466
2467 if (t_connect < 0 || t_data < 0)
2468 return;
2469
2470 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2471 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2472
2473 t_data -= t_connect;
2474 t_connect -= t_queue;
2475 t_queue -= t_request;
2476
2477 srv = objt_server(s->target);
2478 if (srv) {
2479 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2480 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2481 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2482 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2483 }
2484 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2485 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2486 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2487 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
2488}
2489
Willy Tarreau7c669d72008-06-20 15:04:11 +02002490/*
2491 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002492 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002493 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002494 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002495 * server.
2496 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002497void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002498{
2499 if (sess->srv_conn == newsrv)
2500 return;
2501
2502 if (sess->srv_conn) {
2503 sess->srv_conn->served--;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002504 sess->srv_conn->proxy->served--;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002505 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2506 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002507 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002508 }
2509
2510 if (newsrv) {
2511 newsrv->served++;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002512 newsrv->proxy->served++;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002513 if (newsrv->proxy->lbprm.server_take_conn)
2514 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002515 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002516 }
2517}
2518
Willy Tarreau84455332009-03-15 22:34:05 +01002519/* Handle server-side errors for default protocols. It is called whenever a a
2520 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002521 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002522 * them. It's installed as ->srv_error for the server-side stream_interface.
2523 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002524void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002525{
2526 int err_type = si->err_type;
2527 int err = 0, fin = 0;
2528
2529 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002530 err = SF_ERR_CLICL;
2531 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002532 }
2533 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002534 err = SF_ERR_CLICL;
2535 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002536 }
2537 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002538 err = SF_ERR_SRVTO;
2539 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002540 }
2541 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002542 err = SF_ERR_SRVCL;
2543 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002544 }
2545 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002546 err = SF_ERR_SRVTO;
2547 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002548 }
2549 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002550 err = SF_ERR_SRVCL;
2551 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002552 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002553 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002554 err = SF_ERR_RESOURCE;
2555 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002556 }
Willy Tarreau84455332009-03-15 22:34:05 +01002557 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002558 err = SF_ERR_INTERNAL;
2559 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002560 }
2561
Willy Tarreaue7dff022015-04-03 01:14:29 +02002562 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002563 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002564 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002565 s->flags |= fin;
2566}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002567
Willy Tarreaue7dff022015-04-03 01:14:29 +02002568/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002569void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002570{
Willy Tarreau87b09662015-04-03 00:22:06 +02002571 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002572 return;
2573
Willy Tarreau87b09662015-04-03 00:22:06 +02002574 channel_shutw_now(&stream->req);
2575 channel_shutr_now(&stream->res);
2576 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002577 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002578 stream->flags |= why;
2579 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002580}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002581
Willy Tarreau8b22a712010-06-18 17:46:06 +02002582/************************************************************************/
2583/* All supported ACL keywords must be declared here. */
2584/************************************************************************/
2585
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002586/* 0=OK, <0=Alert, >0=Warning */
2587static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2588 struct proxy *px, struct act_rule *rule,
2589 char **err)
2590{
2591 struct action_kw *kw;
2592
2593 /* Check if the service name exists. */
2594 if (*(args[*cur_arg]) == 0) {
2595 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002596 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002597 }
2598
2599 /* lookup for keyword corresponding to a service. */
2600 kw = action_lookup(&service_keywords, args[*cur_arg]);
2601 if (!kw) {
2602 memprintf(err, "'%s' unknown service name.", args[1]);
2603 return ACT_RET_PRS_ERR;
2604 }
2605 (*cur_arg)++;
2606
2607 /* executes specific rule parser. */
2608 rule->kw = kw;
2609 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2610 return ACT_RET_PRS_ERR;
2611
2612 /* Register processing function. */
2613 rule->action_ptr = process_use_service;
2614 rule->action = ACT_CUSTOM;
2615
2616 return ACT_RET_PRS_OK;
2617}
2618
2619void service_keywords_register(struct action_kw_list *kw_list)
2620{
2621 LIST_ADDQ(&service_keywords, &kw_list->list);
2622}
2623
William Lallemand4c5b4d52016-11-21 08:51:11 +01002624
2625/* This function dumps a complete stream state onto the stream interface's
2626 * read buffer. The stream has to be set in strm. It returns 0 if the output
2627 * buffer is full and it needs to be called again, otherwise non-zero. It is
2628 * designed to be called from stats_dump_strm_to_buffer() below.
2629 */
2630static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2631{
2632 struct appctx *appctx = __objt_appctx(si->end);
2633 struct tm tm;
2634 extern const char *monthname[12];
2635 char pn[INET6_ADDRSTRLEN];
2636 struct connection *conn;
2637 struct appctx *tmpctx;
2638
2639 chunk_reset(&trash);
2640
2641 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2642 /* stream changed, no need to go any further */
2643 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
2644 if (bi_putchk(si_ic(si), &trash) == -1) {
2645 si_applet_cant_put(si);
2646 return 0;
2647 }
2648 appctx->ctx.sess.uid = 0;
2649 appctx->ctx.sess.section = 0;
2650 return 1;
2651 }
2652
2653 switch (appctx->ctx.sess.section) {
2654 case 0: /* main status of the stream */
2655 appctx->ctx.sess.uid = strm->uniq_id;
2656 appctx->ctx.sess.section = 1;
2657 /* fall through */
2658
2659 case 1:
2660 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2661 chunk_appendf(&trash,
2662 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2663 strm,
2664 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2665 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2666 strm->uniq_id,
2667 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2668
2669 conn = objt_conn(strm_orig(strm));
2670 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2671 case AF_INET:
2672 case AF_INET6:
2673 chunk_appendf(&trash, " source=%s:%d\n",
2674 pn, get_host_port(&conn->addr.from));
2675 break;
2676 case AF_UNIX:
2677 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2678 break;
2679 default:
2680 /* no more information to print right now */
2681 chunk_appendf(&trash, "\n");
2682 break;
2683 }
2684
2685 chunk_appendf(&trash,
2686 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2687 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2688
2689 chunk_appendf(&trash,
2690 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2691 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2692 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2693 strm_li(strm) ? strm_li(strm)->luid : 0);
2694
2695 if (conn)
2696 conn_get_to_addr(conn);
2697
2698 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2699 case AF_INET:
2700 case AF_INET6:
2701 chunk_appendf(&trash, " addr=%s:%d\n",
2702 pn, get_host_port(&conn->addr.to));
2703 break;
2704 case AF_UNIX:
2705 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2706 break;
2707 default:
2708 /* no more information to print right now */
2709 chunk_appendf(&trash, "\n");
2710 break;
2711 }
2712
2713 if (strm->be->cap & PR_CAP_BE)
2714 chunk_appendf(&trash,
2715 " backend=%s (id=%u mode=%s)",
2716 strm->be->id,
2717 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2718 else
2719 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2720
2721 conn = objt_conn(strm->si[1].end);
2722 if (conn)
2723 conn_get_from_addr(conn);
2724
2725 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2726 case AF_INET:
2727 case AF_INET6:
2728 chunk_appendf(&trash, " addr=%s:%d\n",
2729 pn, get_host_port(&conn->addr.from));
2730 break;
2731 case AF_UNIX:
2732 chunk_appendf(&trash, " addr=unix\n");
2733 break;
2734 default:
2735 /* no more information to print right now */
2736 chunk_appendf(&trash, "\n");
2737 break;
2738 }
2739
2740 if (strm->be->cap & PR_CAP_BE)
2741 chunk_appendf(&trash,
2742 " server=%s (id=%u)",
2743 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2744 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2745 else
2746 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2747
2748 if (conn)
2749 conn_get_to_addr(conn);
2750
2751 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2752 case AF_INET:
2753 case AF_INET6:
2754 chunk_appendf(&trash, " addr=%s:%d\n",
2755 pn, get_host_port(&conn->addr.to));
2756 break;
2757 case AF_UNIX:
2758 chunk_appendf(&trash, " addr=unix\n");
2759 break;
2760 default:
2761 /* no more information to print right now */
2762 chunk_appendf(&trash, "\n");
2763 break;
2764 }
2765
2766 chunk_appendf(&trash,
2767 " task=%p (state=0x%02x nice=%d calls=%d exp=%s%s",
2768 strm->task,
2769 strm->task->state,
2770 strm->task->nice, strm->task->calls,
2771 strm->task->expire ?
2772 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2773 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2774 TICKS_TO_MS(1000)) : "<NEVER>",
2775 task_in_rq(strm->task) ? ", running" : "");
2776
2777 chunk_appendf(&trash,
2778 " age=%s)\n",
2779 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2780
2781 if (strm->txn)
2782 chunk_appendf(&trash,
2783 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2784 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002785 http_msg_state_str(strm->txn->req.msg_state), http_msg_state_str(strm->txn->rsp.msg_state), !LIST_ISEMPTY(&strm->buffer_wait.list));
William Lallemand4c5b4d52016-11-21 08:51:11 +01002786
2787 chunk_appendf(&trash,
2788 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2789 &strm->si[0],
2790 si_state_str(strm->si[0].state),
2791 strm->si[0].flags,
2792 obj_type_name(strm->si[0].end),
2793 obj_base_ptr(strm->si[0].end),
2794 strm->si[0].exp ?
2795 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2796 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2797 TICKS_TO_MS(1000)) : "<NEVER>",
2798 strm->si[0].err_type);
2799
2800 chunk_appendf(&trash,
2801 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2802 &strm->si[1],
2803 si_state_str(strm->si[1].state),
2804 strm->si[1].flags,
2805 obj_type_name(strm->si[1].end),
2806 obj_base_ptr(strm->si[1].end),
2807 strm->si[1].exp ?
2808 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2809 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2810 TICKS_TO_MS(1000)) : "<NEVER>",
2811 strm->si[1].err_type);
2812
2813 if ((conn = objt_conn(strm->si[0].end)) != NULL) {
2814 chunk_appendf(&trash,
2815 " co0=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2816 conn,
2817 conn_get_ctrl_name(conn),
2818 conn_get_xprt_name(conn),
2819 conn_get_data_name(conn),
2820 obj_type_name(conn->target),
2821 obj_base_ptr(conn->target));
2822
2823 chunk_appendf(&trash,
2824 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2825 conn->flags,
2826 conn->t.sock.fd,
2827 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].state : 0,
2828 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].cache : 0,
2829 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].updated : 0);
2830 }
2831 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2832 chunk_appendf(&trash,
2833 " app0=%p st0=%d st1=%d st2=%d applet=%s\n",
2834 tmpctx,
2835 tmpctx->st0,
2836 tmpctx->st1,
2837 tmpctx->st2,
2838 tmpctx->applet->name);
2839 }
2840
2841 if ((conn = objt_conn(strm->si[1].end)) != NULL) {
2842 chunk_appendf(&trash,
2843 " co1=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2844 conn,
2845 conn_get_ctrl_name(conn),
2846 conn_get_xprt_name(conn),
2847 conn_get_data_name(conn),
2848 obj_type_name(conn->target),
2849 obj_base_ptr(conn->target));
2850
2851 chunk_appendf(&trash,
2852 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2853 conn->flags,
2854 conn->t.sock.fd,
2855 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].state : 0,
2856 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].cache : 0,
2857 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].updated : 0);
2858 }
2859 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
2860 chunk_appendf(&trash,
2861 " app1=%p st0=%d st1=%d st2=%d applet=%s\n",
2862 tmpctx,
2863 tmpctx->st0,
2864 tmpctx->st1,
2865 tmpctx->st2,
2866 tmpctx->applet->name);
2867 }
2868
2869 chunk_appendf(&trash,
2870 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2871 " an_exp=%s",
2872 &strm->req,
2873 strm->req.flags, strm->req.analysers,
2874 strm->req.pipe ? strm->req.pipe->data : 0,
2875 strm->req.to_forward, strm->req.total,
2876 strm->req.analyse_exp ?
2877 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
2878 TICKS_TO_MS(1000)) : "<NEVER>");
2879
2880 chunk_appendf(&trash,
2881 " rex=%s",
2882 strm->req.rex ?
2883 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
2884 TICKS_TO_MS(1000)) : "<NEVER>");
2885
2886 chunk_appendf(&trash,
2887 " wex=%s\n"
2888 " buf=%p data=%p o=%d p=%d req.next=%d i=%d size=%d\n",
2889 strm->req.wex ?
2890 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
2891 TICKS_TO_MS(1000)) : "<NEVER>",
2892 strm->req.buf,
2893 strm->req.buf->data, strm->req.buf->o,
2894 (int)(strm->req.buf->p - strm->req.buf->data),
2895 strm->txn ? strm->txn->req.next : 0, strm->req.buf->i,
2896 strm->req.buf->size);
2897
2898 chunk_appendf(&trash,
2899 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2900 " an_exp=%s",
2901 &strm->res,
2902 strm->res.flags, strm->res.analysers,
2903 strm->res.pipe ? strm->res.pipe->data : 0,
2904 strm->res.to_forward, strm->res.total,
2905 strm->res.analyse_exp ?
2906 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
2907 TICKS_TO_MS(1000)) : "<NEVER>");
2908
2909 chunk_appendf(&trash,
2910 " rex=%s",
2911 strm->res.rex ?
2912 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
2913 TICKS_TO_MS(1000)) : "<NEVER>");
2914
2915 chunk_appendf(&trash,
2916 " wex=%s\n"
2917 " buf=%p data=%p o=%d p=%d rsp.next=%d i=%d size=%d\n",
2918 strm->res.wex ?
2919 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
2920 TICKS_TO_MS(1000)) : "<NEVER>",
2921 strm->res.buf,
2922 strm->res.buf->data, strm->res.buf->o,
2923 (int)(strm->res.buf->p - strm->res.buf->data),
2924 strm->txn ? strm->txn->rsp.next : 0, strm->res.buf->i,
2925 strm->res.buf->size);
2926
2927 if (bi_putchk(si_ic(si), &trash) == -1) {
2928 si_applet_cant_put(si);
2929 return 0;
2930 }
2931
2932 /* use other states to dump the contents */
2933 }
2934 /* end of dump */
2935 appctx->ctx.sess.uid = 0;
2936 appctx->ctx.sess.section = 0;
2937 return 1;
2938}
2939
2940
2941static int cli_parse_show_sess(char **args, struct appctx *appctx, void *private)
2942{
William Lallemand4c5b4d52016-11-21 08:51:11 +01002943 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2944 return 1;
2945
2946 if (*args[2] && strcmp(args[2], "all") == 0)
2947 appctx->ctx.sess.target = (void *)-1;
2948 else if (*args[2])
2949 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
2950 else
2951 appctx->ctx.sess.target = NULL;
2952 appctx->ctx.sess.section = 0; /* start with stream status */
2953 appctx->ctx.sess.pos = 0;
2954
2955 return 0;
2956}
2957
2958/* This function dumps all streams' states onto the stream interface's
2959 * read buffer. It returns 0 if the output buffer is full and it needs
2960 * to be called again, otherwise non-zero. It is designed to be called
2961 * from stats_dump_sess_to_buffer() below.
2962 */
2963static int cli_io_handler_dump_sess(struct appctx *appctx)
2964{
2965 struct stream_interface *si = appctx->owner;
2966 struct connection *conn;
2967
2968 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
2969 /* If we're forced to shut down, we might have to remove our
2970 * reference to the last stream being dumped.
2971 */
2972 if (appctx->st2 == STAT_ST_LIST) {
2973 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
2974 LIST_DEL(&appctx->ctx.sess.bref.users);
2975 LIST_INIT(&appctx->ctx.sess.bref.users);
2976 }
2977 }
2978 return 1;
2979 }
2980
2981 chunk_reset(&trash);
2982
2983 switch (appctx->st2) {
2984 case STAT_ST_INIT:
2985 /* the function had not been called yet, let's prepare the
2986 * buffer for a response. We initialize the current stream
2987 * pointer to the first in the global list. When a target
2988 * stream is being destroyed, it is responsible for updating
2989 * this pointer. We know we have reached the end when this
2990 * pointer points back to the head of the streams list.
2991 */
2992 LIST_INIT(&appctx->ctx.sess.bref.users);
2993 appctx->ctx.sess.bref.ref = streams.n;
2994 appctx->st2 = STAT_ST_LIST;
2995 /* fall through */
2996
2997 case STAT_ST_LIST:
2998 /* first, let's detach the back-ref from a possible previous stream */
2999 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3000 LIST_DEL(&appctx->ctx.sess.bref.users);
3001 LIST_INIT(&appctx->ctx.sess.bref.users);
3002 }
3003
3004 /* and start from where we stopped */
3005 while (appctx->ctx.sess.bref.ref != &streams) {
3006 char pn[INET6_ADDRSTRLEN];
3007 struct stream *curr_strm;
3008
3009 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3010
3011 if (appctx->ctx.sess.target) {
3012 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3013 goto next_sess;
3014
3015 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3016 /* call the proper dump() function and return if we're missing space */
3017 if (!stats_dump_full_strm_to_buffer(si, curr_strm))
3018 return 0;
3019
3020 /* stream dump complete */
3021 LIST_DEL(&appctx->ctx.sess.bref.users);
3022 LIST_INIT(&appctx->ctx.sess.bref.users);
3023 if (appctx->ctx.sess.target != (void *)-1) {
3024 appctx->ctx.sess.target = NULL;
3025 break;
3026 }
3027 else
3028 goto next_sess;
3029 }
3030
3031 chunk_appendf(&trash,
3032 "%p: proto=%s",
3033 curr_strm,
3034 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3035
3036 conn = objt_conn(strm_orig(curr_strm));
3037 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3038 case AF_INET:
3039 case AF_INET6:
3040 chunk_appendf(&trash,
3041 " src=%s:%d fe=%s be=%s srv=%s",
3042 pn,
3043 get_host_port(&conn->addr.from),
3044 strm_fe(curr_strm)->id,
3045 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3046 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3047 );
3048 break;
3049 case AF_UNIX:
3050 chunk_appendf(&trash,
3051 " src=unix:%d fe=%s be=%s srv=%s",
3052 strm_li(curr_strm)->luid,
3053 strm_fe(curr_strm)->id,
3054 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3055 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3056 );
3057 break;
3058 }
3059
3060 chunk_appendf(&trash,
3061 " ts=%02x age=%s calls=%d",
3062 curr_strm->task->state,
3063 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3064 curr_strm->task->calls);
3065
3066 chunk_appendf(&trash,
3067 " rq[f=%06xh,i=%d,an=%02xh,rx=%s",
3068 curr_strm->req.flags,
3069 curr_strm->req.buf->i,
3070 curr_strm->req.analysers,
3071 curr_strm->req.rex ?
3072 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3073 TICKS_TO_MS(1000)) : "");
3074
3075 chunk_appendf(&trash,
3076 ",wx=%s",
3077 curr_strm->req.wex ?
3078 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3079 TICKS_TO_MS(1000)) : "");
3080
3081 chunk_appendf(&trash,
3082 ",ax=%s]",
3083 curr_strm->req.analyse_exp ?
3084 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3085 TICKS_TO_MS(1000)) : "");
3086
3087 chunk_appendf(&trash,
3088 " rp[f=%06xh,i=%d,an=%02xh,rx=%s",
3089 curr_strm->res.flags,
3090 curr_strm->res.buf->i,
3091 curr_strm->res.analysers,
3092 curr_strm->res.rex ?
3093 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3094 TICKS_TO_MS(1000)) : "");
3095
3096 chunk_appendf(&trash,
3097 ",wx=%s",
3098 curr_strm->res.wex ?
3099 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3100 TICKS_TO_MS(1000)) : "");
3101
3102 chunk_appendf(&trash,
3103 ",ax=%s]",
3104 curr_strm->res.analyse_exp ?
3105 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3106 TICKS_TO_MS(1000)) : "");
3107
3108 conn = objt_conn(curr_strm->si[0].end);
3109 chunk_appendf(&trash,
3110 " s0=[%d,%1xh,fd=%d,ex=%s]",
3111 curr_strm->si[0].state,
3112 curr_strm->si[0].flags,
3113 conn ? conn->t.sock.fd : -1,
3114 curr_strm->si[0].exp ?
3115 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3116 TICKS_TO_MS(1000)) : "");
3117
3118 conn = objt_conn(curr_strm->si[1].end);
3119 chunk_appendf(&trash,
3120 " s1=[%d,%1xh,fd=%d,ex=%s]",
3121 curr_strm->si[1].state,
3122 curr_strm->si[1].flags,
3123 conn ? conn->t.sock.fd : -1,
3124 curr_strm->si[1].exp ?
3125 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3126 TICKS_TO_MS(1000)) : "");
3127
3128 chunk_appendf(&trash,
3129 " exp=%s",
3130 curr_strm->task->expire ?
3131 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3132 TICKS_TO_MS(1000)) : "");
3133 if (task_in_rq(curr_strm->task))
3134 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3135
3136 chunk_appendf(&trash, "\n");
3137
3138 if (bi_putchk(si_ic(si), &trash) == -1) {
3139 /* let's try again later from this stream. We add ourselves into
3140 * this stream's users so that it can remove us upon termination.
3141 */
3142 si_applet_cant_put(si);
3143 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3144 return 0;
3145 }
3146
3147 next_sess:
3148 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3149 }
3150
3151 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3152 /* specified stream not found */
3153 if (appctx->ctx.sess.section > 0)
3154 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3155 else
3156 chunk_appendf(&trash, "Session not found.\n");
3157
3158 if (bi_putchk(si_ic(si), &trash) == -1) {
3159 si_applet_cant_put(si);
3160 return 0;
3161 }
3162
3163 appctx->ctx.sess.target = NULL;
3164 appctx->ctx.sess.uid = 0;
3165 return 1;
3166 }
3167
3168 appctx->st2 = STAT_ST_FIN;
3169 /* fall through */
3170
3171 default:
3172 appctx->st2 = STAT_ST_FIN;
3173 return 1;
3174 }
3175}
3176
3177static void cli_release_show_sess(struct appctx *appctx)
3178{
3179 if (appctx->st2 == STAT_ST_LIST) {
3180 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3181 LIST_DEL(&appctx->ctx.sess.bref.users);
3182 }
3183}
3184
Willy Tarreau61b65212016-11-24 11:09:25 +01003185/* Parses the "shutdown session" directive, it always returns 1 */
3186static int cli_parse_shutdown_session(char **args, struct appctx *appctx, void *private)
3187{
3188 struct stream *strm, *ptr;
3189
3190 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3191 return 1;
3192
3193 if (!*args[2]) {
3194 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003195 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003196 return 1;
3197 }
3198
3199 ptr = (void *)strtoul(args[2], NULL, 0);
3200
3201 /* first, look for the requested stream in the stream table */
3202 list_for_each_entry(strm, &streams, list) {
3203 if (strm == ptr)
3204 break;
3205 }
3206
3207 /* do we have the stream ? */
3208 if (strm != ptr) {
3209 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003210 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003211 return 1;
3212 }
3213
3214 stream_shutdown(strm, SF_ERR_KILLED);
3215 return 1;
3216}
3217
Willy Tarreau4e46b622016-11-23 16:50:48 +01003218/* Parses the "shutdown session server" directive, it always returns 1 */
3219static int cli_parse_shutdown_sessions_server(char **args, struct appctx *appctx, void *private)
3220{
3221 struct server *sv;
3222 struct stream *strm, *strm_bck;
3223
3224 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3225 return 1;
3226
3227 sv = cli_find_server(appctx, args[3]);
3228 if (!sv)
3229 return 1;
3230
3231 /* kill all the stream that are on this server */
3232 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3233 if (strm->srv_conn == sv)
3234 stream_shutdown(strm, SF_ERR_KILLED);
3235 return 1;
3236}
3237
William Lallemand4c5b4d52016-11-21 08:51:11 +01003238/* register cli keywords */
3239static struct cli_kw_list cli_kws = {{ },{
3240 { { "show", "sess", NULL }, "show sess [id] : report the list of current sessions or dump this session", cli_parse_show_sess, cli_io_handler_dump_sess, cli_release_show_sess },
Willy Tarreau61b65212016-11-24 11:09:25 +01003241 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003242 { { "shutdown", "sessions", "server" }, "shutdown sessions server : kill sessions on a server", cli_parse_shutdown_sessions_server, NULL, NULL },
William Lallemand4c5b4d52016-11-21 08:51:11 +01003243 {{},}
3244}};
3245
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003246/* main configuration keyword registration. */
3247static struct action_kw_list stream_tcp_keywords = { ILH, {
3248 { "use-service", stream_parse_use_service },
3249 { /* END */ }
3250}};
3251
3252static struct action_kw_list stream_http_keywords = { ILH, {
3253 { "use-service", stream_parse_use_service },
3254 { /* END */ }
3255}};
3256
Willy Tarreau8b22a712010-06-18 17:46:06 +02003257__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003258static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003259{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003260 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3261 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003262 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003263}
3264
Willy Tarreaubaaee002006-06-26 02:48:02 +02003265/*
3266 * Local variables:
3267 * c-indent-level: 8
3268 * c-basic-offset: 8
3269 * End:
3270 */