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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 Tarreau9ad7bd42015-04-03 19:19:59 +0200265 struct connection *cli_conn = objt_conn(sess->origin);
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];
598
Willy Tarreau87b09662015-04-03 00:22:06 +0200599 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100600 if (objt_server(s->target)) {
601 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100602
Willy Tarreaue7dff022015-04-03 01:14:29 +0200603 if (s->flags & SF_CURR_SESS) {
604 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100605 objt_server(s->target)->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100606 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100607 }
608
609 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200610 si->conn_retries--;
611 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100612 if (!si->err_type) {
613 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100614 }
615
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100616 if (objt_server(s->target))
617 objt_server(s->target)->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100618 s->be->be_counters.failed_conns++;
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100619 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100620 if (may_dequeue_tasks(objt_server(s->target), s->be))
621 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100622
623 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200624 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100625 s->req.flags |= CF_WRITE_ERROR;
626 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100627
628 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100629 if (s->srv_error)
630 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100631 return 0;
632 }
633
634 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700635 * retry on another server. By default this redispatch occurs on the
636 * last retry, but if configured we allow redispatches to occur on
637 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200638 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100639 * bit to ignore any persistence cookie. We won't count a retry nor a
640 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200641 * If the connection is not persistent, the balancing algorithm is not
642 * determinist (round robin) and there is more than one active server,
643 * we accept to perform an immediate redispatch without waiting since
644 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100645 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200646 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700647 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Willy Tarreau49008c12016-01-13 07:58:44 +0100648 ((__objt_server(s->target)->state < SRV_ST_RUNNING) ||
649 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700650 ((s->be->conn_retries - si->conn_retries) %
651 s->be->redispatch_after == 0)) ||
652 ((s->be->redispatch_after < 0) &&
653 ((s->be->conn_retries - si->conn_retries) %
654 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200655 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700656 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100657 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100658 if (may_dequeue_tasks(objt_server(s->target), s->be))
659 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100660
Willy Tarreaue7dff022015-04-03 01:14:29 +0200661 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100662 si->state = SI_ST_REQ;
663 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100664 if (objt_server(s->target))
665 objt_server(s->target)->counters.retries++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100666 s->be->be_counters.retries++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100667 si->state = SI_ST_ASS;
668 }
669
670 if (si->flags & SI_FL_ERR) {
671 /* The error was an asynchronous connection error, and we will
672 * likely have to retry connecting to the same server, most
673 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200674 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100675 */
676
Willy Tarreaub0290662014-06-13 17:04:44 +0200677 int delay = 1000;
678
679 if (s->be->timeout.connect && s->be->timeout.connect < delay)
680 delay = s->be->timeout.connect;
681
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100682 if (!si->err_type)
683 si->err_type = SI_ET_CONN_ERR;
684
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200685 /* only wait when we're retrying on the same server */
686 if (si->state == SI_ST_ASS ||
687 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
688 (s->be->srv_act <= 1)) {
689 si->state = SI_ST_TAR;
690 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
691 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100692 return 0;
693 }
694 return 0;
695}
696
697/*
698 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200699 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200700 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100701 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200702static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100703{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100704 struct stream_interface *si = &s->si[1];
705 struct channel *req = &s->req;
706 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100707
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100708 /* First, centralize the timers information */
709 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
710 si->exp = TICK_ETERNITY;
711
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100712 if (objt_server(s->target))
713 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100714
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100715 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100716 /* if the user wants to log as soon as possible, without counting
717 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200718 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100719 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100720 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100721 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100722 }
723 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100724 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100725 }
726
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100727 if (!(s->flags & SF_TUNNEL)) {
728 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100729
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100730 /* Be sure to filter response headers if the backend is an HTTP proxy
731 * and if there are filters attached to the stream. */
732 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
733 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
734 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100735
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200736 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200737 if (req->flags & CF_WAKE_CONNECT) {
738 req->flags |= CF_WAKE_ONCE;
739 req->flags &= ~CF_WAKE_CONNECT;
740 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200741 if (objt_conn(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200742 /* real connections have timeouts */
743 req->wto = s->be->timeout.server;
744 rep->rto = s->be->timeout.server;
745 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100746 req->wex = TICK_ETERNITY;
747}
748
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700749/* Check if the connection request is in such a state that it can be aborted. */
750static int check_req_may_abort(struct channel *req, struct stream *s)
751{
752 return ((req->flags & (CF_READ_ERROR)) ||
753 ((req->flags & CF_SHUTW_NOW) && /* empty and client aborted */
754 (channel_is_empty(req) || s->be->options & PR_O_ABRT_CLOSE)));
755}
756
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100757/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
758 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100759 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
760 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
761 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100762 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200763static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100764{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100765 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100766 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100767 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100768
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100769 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 +0100770 now_ms, __FUNCTION__,
771 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400772 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100773 req->rex, s->res.wex,
774 req->flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -0400775 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 +0100776
777 if (si->state == SI_ST_ASS) {
778 /* Server assigned to connection request, we have to try to connect now */
779 int conn_err;
780
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700781 /* Before we try to initiate the connection, see if the
782 * request may be aborted instead.
783 */
784 if (check_req_may_abort(req, s)) {
785 si->err_type |= SI_ET_CONN_ABRT;
786 goto abort_connection;
787 }
788
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100789 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100790 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100791
Willy Tarreaue7dff022015-04-03 01:14:29 +0200792 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100793 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100794 if (srv)
795 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500796 if (srv)
797 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100798 return;
799 }
800
801 /* We have received a synchronous error. We might have to
802 * abort, retry immediately or redispatch.
803 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200804 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100805 if (!si->err_type) {
806 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100807 }
808
Willy Tarreau827aee92011-03-10 16:55:02 +0100809 if (srv)
810 srv_inc_sess_ctr(srv);
811 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500812 srv_set_sess_last(srv);
813 if (srv)
Willy Tarreau827aee92011-03-10 16:55:02 +0100814 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100815 s->be->be_counters.failed_conns++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100816
Willy Tarreau87b09662015-04-03 00:22:06 +0200817 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100818 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100819 if (may_dequeue_tasks(srv, s->be))
820 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100821
822 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200823 si_shutr(si);
824 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100825 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100826
827 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
828
Willy Tarreau87b09662015-04-03 00:22:06 +0200829 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100830 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100831 if (s->srv_error)
832 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100833 return;
834 }
835
836 /* We are facing a retryable error, but we don't want to run a
837 * turn-around now, as the problem is likely a source port
838 * allocation problem, so we want to retry now.
839 */
840 si->state = SI_ST_CER;
841 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100842 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100843 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
844 return;
845 }
846 else if (si->state == SI_ST_QUE) {
847 /* connection request was queued, check for any update */
848 if (!s->pend_pos) {
849 /* The connection is not in the queue anymore. Either
850 * we have a server connection slot available and we
851 * go directly to the assigned state, or we need to
852 * load-balance first and go to the INI state.
853 */
854 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200855 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100856 si->state = SI_ST_REQ;
857 else {
858 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
859 si->state = SI_ST_ASS;
860 }
861 return;
862 }
863
864 /* Connection request still in queue... */
865 if (si->flags & SI_FL_EXP) {
866 /* ... and timeout expired */
867 si->exp = TICK_ETERNITY;
868 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau827aee92011-03-10 16:55:02 +0100869 if (srv)
870 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100871 s->be->be_counters.failed_conns++;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200872 si_shutr(si);
873 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100874 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100875 if (!si->err_type)
876 si->err_type = SI_ET_QUEUE_TO;
877 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100878 if (s->srv_error)
879 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100880 return;
881 }
882
883 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700884 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100885 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100886 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700887 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100888 }
889
890 /* Nothing changed */
891 return;
892 }
893 else if (si->state == SI_ST_TAR) {
894 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700895 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100896 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700897 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100898 }
899
900 if (!(si->flags & SI_FL_EXP))
901 return; /* still in turn-around */
902
903 si->exp = TICK_ETERNITY;
904
Willy Tarreau87b09662015-04-03 00:22:06 +0200905 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100906 * marked "assigned".
907 * FIXME: Should we force a redispatch attempt when the server is down ?
908 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200909 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100910 si->state = SI_ST_ASS;
911 else
912 si->state = SI_ST_REQ;
913 return;
914 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700915 return;
916
917abort_connection:
918 /* give up */
919 si->exp = TICK_ETERNITY;
920 si_shutr(si);
921 si_shutw(si);
922 si->state = SI_ST_CLO;
923 if (s->srv_error)
924 s->srv_error(s, si);
925 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100926}
927
Willy Tarreau87b09662015-04-03 00:22:06 +0200928/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +0900929 * also counts a failed request if the server state has not reached the request
930 * stage.
931 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200932static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +0900933{
Willy Tarreaue7dff022015-04-03 01:14:29 +0200934 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +0900935 if (s->si[1].state < SI_ST_REQ) {
936
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200937 strm_fe(s)->fe_counters.failed_req++;
Willy Tarreau2c1068c2015-09-23 12:21:21 +0200938 if (strm_li(s) && strm_li(s)->counters)
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200939 strm_li(s)->counters->failed_req++;
Simon Hormandec5be42011-06-08 09:19:07 +0900940
Willy Tarreaue7dff022015-04-03 01:14:29 +0200941 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +0900942 }
943 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200944 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +0900945 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200946 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +0900947 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200948 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +0900949 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200950 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +0900951 }
952}
953
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100954/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +0100955 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
956 * a real connection to a server, indicating that a server has been assigned,
957 * or SI_ST_EST for a successful connection to an applet. It may also return
958 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100959 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200960static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100961{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100962 struct stream_interface *si = &s->si[1];
963
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100964 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 +0100965 now_ms, __FUNCTION__,
966 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400967 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100968 s->req.rex, s->res.wex,
969 s->req.flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -0400970 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 +0100971
972 if (si->state != SI_ST_REQ)
973 return;
974
Willy Tarreaud84fb5e2013-11-30 09:06:53 +0100975 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
976 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +0100977 struct appctx *appctx = objt_appctx(si->end);
978
979 if (!appctx || appctx->applet != __objt_applet(s->target))
980 appctx = stream_int_register_handler(si, objt_applet(s->target));
981
982 if (!appctx) {
983 /* No more memory, let's immediately abort. Force the
984 * error code to ignore the ERR_LOCAL which is not a
985 * real error.
986 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200987 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +0100988
989 si_shutr(si);
990 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100991 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +0100992 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +0100993 si->state = SI_ST_CLO;
994 if (s->srv_error)
995 s->srv_error(s, si);
996 return;
997 }
998
Willy Tarreaud84fb5e2013-11-30 09:06:53 +0100999 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001000 si->state = SI_ST_EST;
1001 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001002 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001003 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001004 return;
1005 }
1006
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001007 /* Try to assign a server */
1008 if (srv_redispatch_connect(s) != 0) {
1009 /* We did not get a server. Either we queued the
1010 * connection request, or we encountered an error.
1011 */
1012 if (si->state == SI_ST_QUE)
1013 return;
1014
1015 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001016 si_shutr(si);
1017 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001018 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001019 if (!si->err_type)
1020 si->err_type = SI_ET_CONN_OTHER;
1021 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001022 if (s->srv_error)
1023 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001024 return;
1025 }
1026
1027 /* The server is assigned */
1028 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1029 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001030 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001031}
1032
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001033/* This function parses the use-service action ruleset. It executes
1034 * the associated ACL and set an applet as a stream or txn final node.
1035 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1036 * consistent state. It returns ACT_RET_STOP in succes case because
1037 * use-service must be a terminal action. Returns ACT_RET_YIELD
1038 * if the initialisation function require more data.
1039 */
1040enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1041 struct session *sess, struct stream *s, int flags)
1042
1043{
1044 struct appctx *appctx;
1045
1046 /* Initialises the applet if it is required. */
1047 if (flags & ACT_FLAG_FIRST) {
1048 /* Register applet. this function schedules the applet. */
1049 s->target = &rule->applet.obj_type;
1050 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1051 return ACT_RET_ERR;
1052
1053 /* Initialise the context. */
1054 appctx = si_appctx(&s->si[1]);
1055 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1056 appctx->rule = rule;
1057 }
1058 else
1059 appctx = si_appctx(&s->si[1]);
1060
1061 /* Stops the applet sheduling, in case of the init function miss
1062 * some data.
1063 */
1064 appctx_pause(appctx);
1065 si_applet_stop_get(&s->si[1]);
1066
1067 /* Call initialisation. */
1068 if (rule->applet.init)
1069 switch (rule->applet.init(appctx, px, s)) {
1070 case 0: return ACT_RET_ERR;
1071 case 1: break;
1072 default: return ACT_RET_YIELD;
1073 }
1074
1075 /* Now we can schedule the applet. */
1076 si_applet_cant_get(&s->si[1]);
1077 appctx_wakeup(appctx);
1078
1079 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
1080 sess->fe->fe_counters.intercepted_req++;
1081
1082 /* The flag SF_ASSIGNED prevent from server assignment. */
1083 s->flags |= SF_ASSIGNED;
1084
1085 return ACT_RET_STOP;
1086}
1087
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001088/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001089 * if appropriate. The default_backend rule is also considered, then the
1090 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001091 * It returns 1 if the processing can continue on next analysers, or zero if it
1092 * either needs more data or wants to immediately abort the request.
1093 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001094static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001095{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001096 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001097 struct session *sess = s->sess;
1098 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001099
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001100 req->analysers &= ~an_bit;
1101 req->analyse_exp = TICK_ETERNITY;
1102
Willy Tarreau87b09662015-04-03 00:22:06 +02001103 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 +02001104 now_ms, __FUNCTION__,
1105 s,
1106 req,
1107 req->rex, req->wex,
1108 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001109 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001110 req->analysers);
1111
1112 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001113 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001114 struct switching_rule *rule;
1115
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001116 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001117 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001118
Willy Tarreauf51658d2014-04-23 01:21:56 +02001119 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001120 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001121 ret = acl_pass(ret);
1122 if (rule->cond->pol == ACL_COND_UNLESS)
1123 ret = !ret;
1124 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001125
1126 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001127 /* If the backend name is dynamic, try to resolve the name.
1128 * If we can't resolve the name, or if any error occurs, break
1129 * the loop and fallback to the default backend.
1130 */
1131 struct proxy *backend;
1132
1133 if (rule->dynamic) {
1134 struct chunk *tmp = get_trash_chunk();
1135 if (!build_logline(s, tmp->str, tmp->size, &rule->be.expr))
1136 break;
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001137 backend = proxy_be_by_name(tmp->str);
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001138 if (!backend)
1139 break;
1140 }
1141 else
1142 backend = rule->be.backend;
1143
Willy Tarreau87b09662015-04-03 00:22:06 +02001144 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001145 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001146 break;
1147 }
1148 }
1149
1150 /* To ensure correct connection accounting on the backend, we
1151 * have to assign one if it was not set (eg: a listen). This
1152 * measure also takes care of correctly setting the default
1153 * backend if any.
1154 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001155 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001156 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001157 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001158 }
1159
Willy Tarreaufb356202010-08-03 14:02:05 +02001160 /* 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 +02001161 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001162 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1163 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001164 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001165 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001166
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001167 /* 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 +02001168 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001169 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001170 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001171 int ret = 1;
1172
1173 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001174 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 +01001175 ret = acl_pass(ret);
1176 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1177 ret = !ret;
1178 }
1179
1180 if (ret) {
1181 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001182 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001183 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001184 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001185 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001186 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001187 break;
1188 }
1189 }
1190
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001191 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001192
1193 sw_failed:
1194 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001195 channel_abort(&s->req);
1196 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001197
Willy Tarreaue7dff022015-04-03 01:14:29 +02001198 if (!(s->flags & SF_ERR_MASK))
1199 s->flags |= SF_ERR_RESOURCE;
1200 if (!(s->flags & SF_FINST_MASK))
1201 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001202
Willy Tarreaueee5b512015-04-03 23:46:31 +02001203 if (s->txn)
1204 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001205 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001206 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001207 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001208}
1209
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001210/* This stream analyser works on a request. It applies all use-server rules on
1211 * it then returns 1. The data must already be present in the buffer otherwise
1212 * they won't match. It always returns 1.
1213 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001214static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001215{
1216 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001217 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001218 struct server_rule *rule;
1219
Willy Tarreau87b09662015-04-03 00:22:06 +02001220 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 +02001221 now_ms, __FUNCTION__,
1222 s,
1223 req,
1224 req->rex, req->wex,
1225 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001226 req->buf->i + req->buf->o,
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001227 req->analysers);
1228
Willy Tarreaue7dff022015-04-03 01:14:29 +02001229 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001230 list_for_each_entry(rule, &px->server_rules, list) {
1231 int ret;
1232
Willy Tarreau192252e2015-04-04 01:47:55 +02001233 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001234 ret = acl_pass(ret);
1235 if (rule->cond->pol == ACL_COND_UNLESS)
1236 ret = !ret;
1237
1238 if (ret) {
1239 struct server *srv = rule->srv.ptr;
1240
Willy Tarreau892337c2014-05-13 23:41:20 +02001241 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001242 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001243 (s->flags & SF_FORCE_PRST)) {
1244 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001245 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001246 break;
1247 }
1248 /* if the server is not UP, let's go on with next rules
1249 * just in case another one is suited.
1250 */
1251 }
1252 }
1253 }
1254
1255 req->analysers &= ~an_bit;
1256 req->analyse_exp = TICK_ETERNITY;
1257 return 1;
1258}
1259
Emeric Brun1d33b292010-01-04 15:47:17 +01001260/* This stream analyser works on a request. It applies all sticking rules on
1261 * it then returns 1. The data must already be present in the buffer otherwise
1262 * they won't match. It always returns 1.
1263 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001264static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001265{
1266 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001267 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001268 struct sticking_rule *rule;
1269
Willy Tarreau87b09662015-04-03 00:22:06 +02001270 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 +01001271 now_ms, __FUNCTION__,
1272 s,
1273 req,
1274 req->rex, req->wex,
1275 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001276 req->buf->i,
Emeric Brun1d33b292010-01-04 15:47:17 +01001277 req->analysers);
1278
1279 list_for_each_entry(rule, &px->sticking_rules, list) {
1280 int ret = 1 ;
1281 int i;
1282
Willy Tarreau9667a802013-12-09 12:52:13 +01001283 /* Only the first stick store-request of each table is applied
1284 * and other ones are ignored. The purpose is to allow complex
1285 * configurations which look for multiple entries by decreasing
1286 * order of precision and to stop at the first which matches.
1287 * An example could be a store of the IP address from an HTTP
1288 * header first, then from the source if not found.
1289 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001290 for (i = 0; i < s->store_count; i++) {
1291 if (rule->table.t == s->store[i].table)
1292 break;
1293 }
1294
1295 if (i != s->store_count)
1296 continue;
1297
1298 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001299 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001300 ret = acl_pass(ret);
1301 if (rule->cond->pol == ACL_COND_UNLESS)
1302 ret = !ret;
1303 }
1304
1305 if (ret) {
1306 struct stktable_key *key;
1307
Willy Tarreau192252e2015-04-04 01:47:55 +02001308 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 +01001309 if (!key)
1310 continue;
1311
1312 if (rule->flags & STK_IS_MATCH) {
1313 struct stksess *ts;
1314
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001315 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001316 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001317 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001318 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001319
1320 /* srv found in table */
Willy Tarreau13c29de2010-06-06 16:40:39 +02001321 ptr = stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
1322 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Emeric Brun1d33b292010-01-04 15:47:17 +01001323 if (node) {
1324 struct server *srv;
1325
1326 srv = container_of(node, struct server, conf.id);
Willy Tarreau892337c2014-05-13 23:41:20 +02001327 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001328 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001329 (s->flags & SF_FORCE_PRST)) {
1330 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001331 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001332 }
1333 }
1334 }
Emeric Brun85e77c72010-09-23 18:16:52 +02001335 stktable_touch(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001336 }
1337 }
1338 if (rule->flags & STK_IS_STORE) {
1339 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1340 struct stksess *ts;
1341
1342 ts = stksess_new(rule->table.t, key);
1343 if (ts) {
1344 s->store[s->store_count].table = rule->table.t;
1345 s->store[s->store_count++].ts = ts;
1346 }
1347 }
1348 }
1349 }
1350 }
1351
1352 req->analysers &= ~an_bit;
1353 req->analyse_exp = TICK_ETERNITY;
1354 return 1;
1355}
1356
1357/* This stream analyser works on a response. It applies all store rules on it
1358 * then returns 1. The data must already be present in the buffer otherwise
1359 * they won't match. It always returns 1.
1360 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001361static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001362{
1363 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001364 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001365 struct sticking_rule *rule;
1366 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001367 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001368
Willy Tarreau87b09662015-04-03 00:22:06 +02001369 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 +01001370 now_ms, __FUNCTION__,
1371 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001372 rep,
1373 rep->rex, rep->wex,
1374 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001375 rep->buf->i,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001376 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001377
1378 list_for_each_entry(rule, &px->storersp_rules, list) {
1379 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001380
Willy Tarreau9667a802013-12-09 12:52:13 +01001381 /* Only the first stick store-response of each table is applied
1382 * and other ones are ignored. The purpose is to allow complex
1383 * configurations which look for multiple entries by decreasing
1384 * order of precision and to stop at the first which matches.
1385 * An example could be a store of a set-cookie value, with a
1386 * fallback to a parameter found in a 302 redirect.
1387 *
1388 * The store-response rules are not allowed to override the
1389 * store-request rules for the same table, but they may coexist.
1390 * Thus we can have up to one store-request entry and one store-
1391 * response entry for the same table at any time.
1392 */
1393 for (i = nbreq; i < s->store_count; i++) {
1394 if (rule->table.t == s->store[i].table)
1395 break;
1396 }
1397
1398 /* skip existing entries for this table */
1399 if (i < s->store_count)
1400 continue;
1401
Emeric Brun1d33b292010-01-04 15:47:17 +01001402 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001403 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001404 ret = acl_pass(ret);
1405 if (rule->cond->pol == ACL_COND_UNLESS)
1406 ret = !ret;
1407 }
1408
1409 if (ret) {
1410 struct stktable_key *key;
1411
Willy Tarreau192252e2015-04-04 01:47:55 +02001412 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 +01001413 if (!key)
1414 continue;
1415
Willy Tarreau37e340c2013-12-06 23:05:21 +01001416 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001417 struct stksess *ts;
1418
1419 ts = stksess_new(rule->table.t, key);
1420 if (ts) {
1421 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001422 s->store[s->store_count++].ts = ts;
1423 }
1424 }
1425 }
1426 }
1427
1428 /* process store request and store response */
1429 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001430 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001431 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001432
Willy Tarreauc93cd162014-05-13 15:54:22 +02001433 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001434 stksess_free(s->store[i].table, s->store[i].ts);
1435 s->store[i].ts = NULL;
1436 continue;
1437 }
1438
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001439 ts = stktable_lookup(s->store[i].table, s->store[i].ts);
1440 if (ts) {
1441 /* the entry already existed, we can free ours */
Emeric Brun85e77c72010-09-23 18:16:52 +02001442 stktable_touch(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001443 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001444 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001445 else
Emeric Brun85e77c72010-09-23 18:16:52 +02001446 ts = stktable_store(s->store[i].table, s->store[i].ts, 1);
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001447
1448 s->store[i].ts = NULL;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001449 ptr = stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001450 stktable_data_cast(ptr, server_id) = objt_server(s->target)->puid;
Emeric Brun1d33b292010-01-04 15:47:17 +01001451 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001452 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001453
1454 rep->analysers &= ~an_bit;
1455 rep->analyse_exp = TICK_ETERNITY;
1456 return 1;
1457}
1458
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001459/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001460 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001461 */
1462#define UPDATE_ANALYSERS(real, list, back, flag) { \
1463 list = (((list) & ~(flag)) | ~(back)) & (real); \
1464 back = real; \
1465 if (!(list)) \
1466 break; \
1467 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1468 continue; \
1469}
1470
Christopher Fauleta9215b72016-05-11 17:06:28 +02001471/* These 2 following macros call an analayzer for the specified channel if the
1472 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001473 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001474 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001475 * AN_REQ/RES_HTTP_XFER_BODY) */
1476#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1477 { \
1478 if ((list) & (flag)) { \
1479 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001480 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001481 break; \
1482 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1483 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001484 if (!flt_post_analyze((strm), (chn), (flag))) \
1485 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001486 } \
1487 else { \
1488 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1489 break; \
1490 } \
1491 UPDATE_ANALYSERS((chn)->analysers, (list), \
1492 (back), (flag)); \
1493 } \
1494 }
1495
1496#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1497 { \
1498 if ((list) & (flag)) { \
1499 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1500 break; \
1501 UPDATE_ANALYSERS((chn)->analysers, (list), \
1502 (back), (flag)); \
1503 } \
1504 }
1505
Willy Tarreau87b09662015-04-03 00:22:06 +02001506/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001507 * then puts it back to the wait queue in a clean state, or cleans up its
1508 * resources if it must be deleted. Returns in <next> the date the task wants
1509 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1510 * nothing too many times, the request and response buffers flags are monitored
1511 * and each function is called only if at least another function has changed at
1512 * least one flag it is interested in.
1513 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001514struct task *process_stream(struct task *t)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001515{
Willy Tarreau827aee92011-03-10 16:55:02 +01001516 struct server *srv;
Willy Tarreau87b09662015-04-03 00:22:06 +02001517 struct stream *s = t->context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001518 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001519 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001520 unsigned int rq_prod_last, rq_cons_last;
1521 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001522 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001523 struct channel *req, *res;
1524 struct stream_interface *si_f, *si_b;
1525
1526 req = &s->req;
1527 res = &s->res;
1528
1529 si_f = &s->si[0];
1530 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001531
1532 //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 +01001533 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001534
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001535 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001536 if (s->txn)
1537 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001538
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001539 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001540 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1541 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001542
1543 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001544 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1545 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001546
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001547 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001548 si_f->flags |= SI_FL_DONT_WAKE;
1549 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001550
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001551 /* update pending events */
1552 s->pending_events |= (t->state & TASK_WOKEN_ANY);
1553
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001554 /* 1a: Check for low level timeouts if needed. We just set a flag on
1555 * stream interfaces when their timeouts have expired.
1556 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001557 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001558 stream_int_check_timeouts(si_f);
1559 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001560
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001561 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001562 * for future reads or writes. Note: this will also concern upper layers
1563 * but we do not touch any other flag. We must be careful and correctly
1564 * detect state changes when calling them.
1565 */
1566
Willy Tarreau8f128b42014-11-28 15:07:47 +01001567 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001568
Willy Tarreau8f128b42014-11-28 15:07:47 +01001569 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1570 si_b->flags |= SI_FL_NOLINGER;
1571 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001572 }
1573
Willy Tarreau8f128b42014-11-28 15:07:47 +01001574 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1575 if (si_f->flags & SI_FL_NOHALF)
1576 si_f->flags |= SI_FL_NOLINGER;
1577 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001578 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001579
Willy Tarreau8f128b42014-11-28 15:07:47 +01001580 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001581
Willy Tarreau8f128b42014-11-28 15:07:47 +01001582 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1583 si_f->flags |= SI_FL_NOLINGER;
1584 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001585 }
1586
Willy Tarreau8f128b42014-11-28 15:07:47 +01001587 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1588 if (si_b->flags & SI_FL_NOHALF)
1589 si_b->flags |= SI_FL_NOLINGER;
1590 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001591 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001592
Christopher Fauleta00d8172016-11-10 14:58:05 +01001593 if (HAS_FILTERS(s))
1594 flt_stream_check_timeouts(s);
1595
Willy Tarreau798f4322012-11-08 14:49:17 +01001596 /* Once in a while we're woken up because the task expires. But
1597 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001598 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001599 * timeout needs to be refreshed.
1600 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001601 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001602 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
1603 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001604 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001605 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001606 si_f->flags &= ~SI_FL_DONT_WAKE;
1607 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001608 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001609 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001610 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001611
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001612 /* below we may emit error messages so we have to ensure that we have
1613 * our buffers properly allocated.
1614 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001615 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001616 /* No buffer available, we've been subscribed to the list of
1617 * buffer waiters, let's wait for our turn.
1618 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001619 si_f->flags &= ~SI_FL_DONT_WAKE;
1620 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001621 goto update_exp_and_leave;
1622 }
1623
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001624 /* 1b: check for low-level errors reported at the stream interface.
1625 * First we check if it's a retryable error (in which case we don't
1626 * want to tell the buffer). Otherwise we report the error one level
1627 * upper by setting flags into the buffers. Note that the side towards
1628 * the client cannot have connect (hence retryable) errors. Also, the
1629 * connection setup code must be able to deal with any type of abort.
1630 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001631 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001632 if (unlikely(si_f->flags & SI_FL_ERR)) {
1633 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1634 si_shutr(si_f);
1635 si_shutw(si_f);
1636 stream_int_report_error(si_f);
1637 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001638 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001639 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001640 if (srv)
1641 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001642 if (!(s->flags & SF_ERR_MASK))
1643 s->flags |= SF_ERR_CLICL;
1644 if (!(s->flags & SF_FINST_MASK))
1645 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001646 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001647 }
1648 }
1649
Willy Tarreau8f128b42014-11-28 15:07:47 +01001650 if (unlikely(si_b->flags & SI_FL_ERR)) {
1651 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1652 si_shutr(si_b);
1653 si_shutw(si_b);
1654 stream_int_report_error(si_b);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001655 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001656 if (srv)
1657 srv->counters.failed_resp++;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001658 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001659 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001660 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001661 if (srv)
1662 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001663 if (!(s->flags & SF_ERR_MASK))
1664 s->flags |= SF_ERR_SRVCL;
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 /* note: maybe we should process connection errors here ? */
1670 }
1671
Willy Tarreau8f128b42014-11-28 15:07:47 +01001672 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001673 /* we were trying to establish a connection on the server side,
1674 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1675 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001676 if (unlikely(!sess_update_st_con_tcp(s)))
1677 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001678 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001679 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001680
1681 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1682 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1683 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1684 */
1685 }
1686
Willy Tarreau8f128b42014-11-28 15:07:47 +01001687 rq_prod_last = si_f->state;
1688 rq_cons_last = si_b->state;
1689 rp_cons_last = si_f->state;
1690 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001691
1692 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001693 /* Check for connection closure */
1694
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001695 DPRINTF(stderr,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001696 "[%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 +01001697 now_ms, __FUNCTION__, __LINE__,
1698 t,
1699 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001700 req, res,
1701 req->rex, res->wex,
1702 req->flags, res->flags,
1703 req->buf->i, req->buf->o, res->buf->i, res->buf->o, si_f->state, si_b->state,
1704 si_f->err_type, si_b->err_type,
1705 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001706
1707 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001708 if (unlikely(si_f->state == SI_ST_DIS))
1709 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001710
1711 /* When a server-side connection is released, we have to count it and
1712 * check for pending connections on this server.
1713 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001714 if (unlikely(si_b->state == SI_ST_DIS)) {
1715 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001716 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001717 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001718 if (s->flags & SF_CURR_SESS) {
1719 s->flags &= ~SF_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +01001720 srv->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001721 }
1722 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001723 if (may_dequeue_tasks(srv, s->be))
1724 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001725 }
1726 }
1727
1728 /*
1729 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1730 * at this point.
1731 */
1732
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001733 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001734 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001735 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1736 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
1737 si_f->state != rq_prod_last ||
1738 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001739 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001740 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001741
Willy Tarreau8f128b42014-11-28 15:07:47 +01001742 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001743 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001744 unsigned int ana_list;
1745 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001746
Willy Tarreau90deb182010-01-07 00:20:41 +01001747 /* it's up to the analysers to stop new connections,
1748 * disable reading or closing. Note: if an analyser
1749 * disables any of these bits, it is responsible for
1750 * enabling them again when it disables itself, so
1751 * that other analysers are called in similar conditions.
1752 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001753 channel_auto_read(req);
1754 channel_auto_connect(req);
1755 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001756
1757 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001758 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001759 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001760 * the list when not needed. Any analyser may return 0
1761 * to break out of the loop, either because of missing
1762 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001763 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001764 * analyser, and we may loop again if other analysers
1765 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001766 *
1767 * We build a list of analysers to run. We evaluate all
1768 * of these analysers in the order of the lower bit to
1769 * the higher bit. This ordering is very important.
1770 * An analyser will often add/remove other analysers,
1771 * including itself. Any changes to itself have no effect
1772 * on the loop. If it removes any other analysers, we
1773 * want those analysers not to be called anymore during
1774 * this loop. If it adds an analyser that is located
1775 * after itself, we want it to be scheduled for being
1776 * processed during the loop. If it adds an analyser
1777 * which is located before it, we want it to switch to
1778 * it immediately, even if it has already been called
1779 * once but removed since.
1780 *
1781 * In order to achieve this, we compare the analyser
1782 * list after the call with a copy of it before the
1783 * call. The work list is fed with analyser bits that
1784 * appeared during the call. Then we compare previous
1785 * work list with the new one, and check the bits that
1786 * appeared. If the lowest of these bits is lower than
1787 * the current bit, it means we have enabled a previous
1788 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001789 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001790
Willy Tarreau8f128b42014-11-28 15:07:47 +01001791 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001792 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001793 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001794 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001795 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1796 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1797 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1798 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1799 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001800 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001801 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1802 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1803 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1804 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1805 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1806 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1807 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001808 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001809 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001810 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1811 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001812 break;
1813 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001814 }
Willy Tarreau84455332009-03-15 22:34:05 +01001815
Willy Tarreau8f128b42014-11-28 15:07:47 +01001816 rq_prod_last = si_f->state;
1817 rq_cons_last = si_b->state;
1818 req->flags &= ~CF_WAKE_ONCE;
1819 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001820
Willy Tarreau8f128b42014-11-28 15:07:47 +01001821 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001822 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001823 }
1824
Willy Tarreau576507f2010-01-07 00:09:04 +01001825 /* we'll monitor the request analysers while parsing the response,
1826 * because some response analysers may indirectly enable new request
1827 * analysers (eg: HTTP keep-alive).
1828 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001829 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01001830
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001831 resync_response:
1832 /* Analyse response */
1833
Willy Tarreau8f128b42014-11-28 15:07:47 +01001834 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
1835 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
1836 si_f->state != rp_cons_last ||
1837 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001838 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001839 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001840
Willy Tarreau8f128b42014-11-28 15:07:47 +01001841 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001842 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001843 unsigned int ana_list;
1844 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001845
Willy Tarreau90deb182010-01-07 00:20:41 +01001846 /* it's up to the analysers to stop disable reading or
1847 * closing. Note: if an analyser disables any of these
1848 * bits, it is responsible for enabling them again when
1849 * it disables itself, so that other analysers are called
1850 * in similar conditions.
1851 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001852 channel_auto_read(res);
1853 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001854
1855 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001856 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001857 * to MSB. The analysers must remove themselves from
1858 * the list when not needed. Any analyser may return 0
1859 * to break out of the loop, either because of missing
1860 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001861 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001862 * analyser, and we may loop again if other analysers
1863 * are added in the middle.
1864 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001865
Willy Tarreau8f128b42014-11-28 15:07:47 +01001866 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001867 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001868 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001869 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
1870 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001871 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
1872 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
1873 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
1874 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 +01001875 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001876 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001877 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
1878 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001879 break;
1880 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001881 }
1882
Willy Tarreau8f128b42014-11-28 15:07:47 +01001883 rp_cons_last = si_f->state;
1884 rp_prod_last = si_b->state;
1885 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001886
Willy Tarreau8f128b42014-11-28 15:07:47 +01001887 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001888 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001889 }
1890
Willy Tarreau576507f2010-01-07 00:09:04 +01001891 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001892 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01001893 goto resync_request;
1894
Willy Tarreau8f128b42014-11-28 15:07:47 +01001895 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01001896 goto resync_request;
1897
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001898 /* FIXME: here we should call protocol handlers which rely on
1899 * both buffers.
1900 */
1901
1902
1903 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02001904 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01001905 * we're just in a data phase here since it means we have not
1906 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001907 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001908 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001909 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001910 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001911 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001912 req->analysers = 0;
1913 if (req->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001914 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001915 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001916 if (srv)
1917 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001918 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01001919 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001920 else if (req->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001921 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001922 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001923 if (srv)
1924 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001925 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01001926 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001927 else if (req->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001928 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001929 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001930 if (srv)
1931 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001932 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01001933 }
1934 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001935 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001936 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001937 if (srv)
1938 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001939 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01001940 }
Willy Tarreau84455332009-03-15 22:34:05 +01001941 sess_set_term_flags(s);
1942 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001943 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001944 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001945 res->analysers = 0;
1946 if (res->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001947 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001948 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001949 if (srv)
1950 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001951 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01001952 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001953 else if (res->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001954 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001955 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001956 if (srv)
1957 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001958 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01001959 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001960 else if (res->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001961 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001962 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001963 if (srv)
1964 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001965 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01001966 }
1967 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001968 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001969 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001970 if (srv)
1971 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001972 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01001973 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001974 sess_set_term_flags(s);
1975 }
Willy Tarreau84455332009-03-15 22:34:05 +01001976 }
1977
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001978 /*
1979 * Here we take care of forwarding unhandled data. This also includes
1980 * connection establishments and shutdown requests.
1981 */
1982
1983
Willy Tarreau7c84bab2009-03-08 21:38:23 +01001984 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02001985 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001986 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001987 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01001988 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001989 if (unlikely(!req->analysers &&
1990 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
1991 (si_f->state >= SI_ST_EST) &&
1992 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01001993 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01001994 * attached to it. If any data are left in, we'll permit them to
1995 * move.
1996 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001997 channel_auto_read(req);
1998 channel_auto_connect(req);
1999 channel_auto_close(req);
2000 buffer_flush(req->buf);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002001
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002002 /* We'll let data flow between the producer (if still connected)
2003 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002004 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002005 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002006 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002007
2008 /* Just in order to support fetching HTTP contents after start
2009 * of forwarding when the HTTP forwarding analyser is not used,
2010 * we simply reset msg->sov so that HTTP rewinding points to the
2011 * headers.
2012 */
2013 if (s->txn)
2014 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - req->buf->o;
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002015 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002016
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002017 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002018 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2019 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002020 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002021 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->rcv_pipe) &&
2022 (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 +01002023 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002024 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2025 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002026 (req->flags & CF_STREAMER_FAST)))) {
2027 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002028 }
2029
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002030 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002031 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002032
2033 /*
2034 * Now forward all shutdown requests between both sides of the buffer
2035 */
2036
Willy Tarreau520d95e2009-09-19 21:04:57 +02002037 /* first, let's check if the request buffer needs to shutdown(write), which may
2038 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002039 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2040 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002041 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002042 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002043 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002044 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002045 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002046
2047 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002048 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2049 channel_is_empty(req))) {
2050 if (req->flags & CF_READ_ERROR)
2051 si_b->flags |= SI_FL_NOLINGER;
2052 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002053 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002054
2055 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002056 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2057 !req->analysers))
2058 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002059
2060 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002061 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2062 if (si_f->flags & SI_FL_NOHALF)
2063 si_f->flags |= SI_FL_NOLINGER;
2064 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002065 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002066
Willy Tarreau520d95e2009-09-19 21:04:57 +02002067 /* it's possible that an upper layer has requested a connection setup or abort.
2068 * There are 2 situations where we decide to establish a new connection :
2069 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002070 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002071 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002072 if (si_b->state == SI_ST_INI) {
2073 if (!(req->flags & CF_SHUTW)) {
2074 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002075 /* If we have an appctx, there is no connect method, so we
2076 * immediately switch to the connected state, otherwise we
2077 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002078 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002079 si_b->state = SI_ST_REQ; /* new connection requested */
2080 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002081 }
Willy Tarreau73201222009-08-16 18:27:24 +02002082 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002083 else {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002084 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2085 channel_shutw_now(req); /* fix buffer flags upon abort */
2086 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002087 }
Willy Tarreau92795622009-03-06 12:51:23 +01002088 }
2089
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002090
2091 /* we may have a pending connection request, or a connection waiting
2092 * for completion.
2093 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002094 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002095
2096 /* prune the request variables and swap to the response variables. */
2097 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreau6204cd92016-03-10 16:33:04 +01002098 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002099 vars_init(&s->vars_reqres, SCOPE_RES);
2100 }
2101
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002102 do {
2103 /* nb: step 1 might switch from QUE to ASS, but we first want
2104 * to give a chance to step 2 to perform a redirect if needed.
2105 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002106 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002107 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002108 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002109 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002110
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002111 /* applets directly go to the ESTABLISHED state. Similarly,
2112 * servers experience the same fate when their connection
2113 * is reused.
2114 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002115 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002116 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002117
Willy Tarreaub44c8732013-12-31 23:16:50 +01002118 /* Now we can add the server name to a header (if requested) */
2119 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002120 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002121 (s->be->server_id_hdr_name != NULL) &&
2122 (s->be->mode == PR_MODE_HTTP) &&
2123 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002124 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002125 }
2126
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002127 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002128 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002129 http_perform_server_redirect(s, si_b);
2130 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002131 }
2132
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002133 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002134 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002135 goto resync_stream_interface;
2136
Willy Tarreau815a9b22010-07-27 17:15:12 +02002137 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002138 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002139 goto resync_request;
2140
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002141 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002142
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002143 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002144 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002145 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002146 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002147 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002148 if (unlikely(!res->analysers &&
2149 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2150 (si_b->state >= SI_ST_EST) &&
2151 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002152 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002153 * attached to it. If any data are left in, we'll permit them to
2154 * move.
2155 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002156 channel_auto_read(res);
2157 channel_auto_close(res);
2158 buffer_flush(res->buf);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002159
2160 /* We'll let data flow between the producer (if still connected)
2161 * to the consumer.
2162 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002163 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002164 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002165
Willy Tarreau42529c32015-07-09 18:38:57 +02002166 /* Just in order to support fetching HTTP contents after start
2167 * of forwarding when the HTTP forwarding analyser is not used,
2168 * we simply reset msg->sov so that HTTP rewinding points to the
2169 * headers.
2170 */
2171 if (s->txn)
2172 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - res->buf->o;
2173
Willy Tarreauce887fd2012-05-12 12:50:00 +02002174 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002175 * tunnel timeout set, use it now. Note that we must respect
2176 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002177 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002178 if (!req->analysers && s->be->timeout.tunnel) {
2179 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002180 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002181
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002182 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2183 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002184 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2185 res->rto = s->be->timeout.serverfin;
2186 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2187 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002188 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2189 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002190
Willy Tarreau8f128b42014-11-28 15:07:47 +01002191 req->rex = tick_add(now_ms, req->rto);
2192 req->wex = tick_add(now_ms, req->wto);
2193 res->rex = tick_add(now_ms, res->rto);
2194 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002195 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002196 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002197
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002198 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002199 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2200 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002201 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002202 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->snd_pipe) &&
2203 (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 +01002204 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002205 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2206 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002207 (res->flags & CF_STREAMER_FAST)))) {
2208 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002209 }
2210
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002211 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002212 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002213
2214 /*
2215 * Now forward all shutdown requests between both sides of the buffer
2216 */
2217
2218 /*
2219 * FIXME: this is probably where we should produce error responses.
2220 */
2221
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002222 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002223 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002224 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002225 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002226 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002227
2228 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002229 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2230 channel_is_empty(res))) {
2231 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002232 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002233
2234 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002235 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2236 !res->analysers)
2237 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002238
2239 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002240 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2241 if (si_b->flags & SI_FL_NOHALF)
2242 si_b->flags |= SI_FL_NOLINGER;
2243 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002244 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002245
Willy Tarreau8f128b42014-11-28 15:07:47 +01002246 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002247 goto resync_stream_interface;
2248
Willy Tarreau8f128b42014-11-28 15:07:47 +01002249 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002250 goto resync_request;
2251
Willy Tarreau8f128b42014-11-28 15:07:47 +01002252 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002253 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002254
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002255 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002256 si_f->flags &= ~SI_FL_DONT_WAKE;
2257 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002258
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002259 /* This is needed only when debugging is enabled, to indicate
2260 * client-side or server-side close. Please note that in the unlikely
2261 * event where both sides would close at once, the sequence is reported
2262 * on the server side first.
2263 */
2264 if (unlikely((global.mode & MODE_DEBUG) &&
2265 (!(global.mode & MODE_QUIET) ||
2266 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002267 if (si_b->state == SI_ST_CLO &&
2268 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002269 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002270 s->uniq_id, s->be->id,
Willy Tarreau8f128b42014-11-28 15:07:47 +01002271 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->t.sock.fd : -1,
2272 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->t.sock.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002273 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002274 }
2275
Willy Tarreau8f128b42014-11-28 15:07:47 +01002276 if (si_f->state == SI_ST_CLO &&
2277 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002278 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002279 s->uniq_id, s->be->id,
Willy Tarreau8f128b42014-11-28 15:07:47 +01002280 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->t.sock.fd : -1,
2281 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->t.sock.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002282 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002283 }
2284 }
2285
Willy Tarreau8f128b42014-11-28 15:07:47 +01002286 if (likely((si_f->state != SI_ST_CLO) ||
2287 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002288
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002289 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002290 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002291
Willy Tarreau563cc372015-04-19 18:13:56 +02002292 if (si_f->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002293 si_update(si_f);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002294
Willy Tarreau563cc372015-04-19 18:13:56 +02002295 if (si_b->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002296 si_update(si_b);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002297
Willy Tarreau8f128b42014-11-28 15:07:47 +01002298 req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2299 res->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2300 si_f->prev_state = si_f->state;
2301 si_b->prev_state = si_b->state;
2302 si_f->flags &= ~(SI_FL_ERR|SI_FL_EXP);
2303 si_b->flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002304
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002305 /* Trick: if a request is being waiting for the server to respond,
2306 * and if we know the server can timeout, we don't want the timeout
2307 * to expire on the client side first, but we're still interested
2308 * in passing data from the client to the server (eg: POST). Thus,
2309 * we can cancel the client's request timeout if the server's
2310 * request timeout is set and the server has not yet sent a response.
2311 */
2312
Willy Tarreau8f128b42014-11-28 15:07:47 +01002313 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2314 (tick_isset(req->wex) || tick_isset(res->rex))) {
2315 req->flags |= CF_READ_NOEXP;
2316 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002317 }
2318
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002319 /* Reset pending events now */
2320 s->pending_events = 0;
2321
Willy Tarreau798f4322012-11-08 14:49:17 +01002322 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002323 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002324 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2325 tick_first(tick_first(req->rex, req->wex),
2326 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002327 if (!req->analysers)
2328 req->analyse_exp = TICK_ETERNITY;
2329
2330 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2331 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2332 req->analyse_exp = tick_add(now_ms, 5000);
2333
2334 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002335
Willy Tarreau8f128b42014-11-28 15:07:47 +01002336 if (si_f->exp)
2337 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002338
Willy Tarreau8f128b42014-11-28 15:07:47 +01002339 if (si_b->exp)
2340 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002341
2342#ifdef DEBUG_FULL
Willy Tarreau127334e2009-03-28 10:47:26 +01002343 fprintf(stderr,
2344 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2345 " 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 +01002346 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2347 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002348#endif
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002349
2350#ifdef DEBUG_DEV
2351 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002352 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002353 ABORT_NOW();
2354#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002355 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002356 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002357 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002358 }
2359
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002360 sess->fe->feconn--;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002361 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002362 s->be->beconn--;
Willy Tarreauaf7ad002010-08-31 15:39:26 +02002363 jobs--;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002364 if (sess->listener) {
2365 if (!(sess->listener->options & LI_O_UNLIMITED))
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002366 actconn--;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002367 sess->listener->nbconn--;
2368 if (sess->listener->state == LI_FULL)
2369 resume_listener(sess->listener);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002370
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002371 /* Dequeues all of the listeners waiting for a resource */
2372 if (!LIST_ISEMPTY(&global_listener_queue))
2373 dequeue_all_listeners(&global_listener_queue);
Willy Tarreau08ceb102011-07-24 22:58:00 +02002374
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002375 if (!LIST_ISEMPTY(&sess->fe->listener_queue) &&
2376 (!sess->fe->fe_sps_lim || freq_ctr_remain(&sess->fe->fe_sess_per_sec, sess->fe->fe_sps_lim, 0) > 0))
2377 dequeue_all_listeners(&sess->fe->listener_queue);
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002378 }
Willy Tarreau07687c12011-07-24 23:55:06 +02002379
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002380 if (unlikely((global.mode & MODE_DEBUG) &&
2381 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002382 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002383 s->uniq_id, s->be->id,
Willy Tarreau8f128b42014-11-28 15:07:47 +01002384 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->t.sock.fd : -1,
2385 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->t.sock.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002386 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002387 }
2388
2389 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002390 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002391
Willy Tarreaueee5b512015-04-03 23:46:31 +02002392 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002393 int n;
2394
Willy Tarreaueee5b512015-04-03 23:46:31 +02002395 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002396 if (n < 1 || n > 5)
2397 n = 0;
2398
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002399 if (sess->fe->mode == PR_MODE_HTTP) {
2400 sess->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002401 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002402 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002403 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002404 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002405 s->be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002406 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002407 }
2408
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002409 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002410 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002411 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002412 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002413 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002414 }
2415
Willy Tarreau87b09662015-04-03 00:22:06 +02002416 /* update time stats for this stream */
2417 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002418
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002419 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002420 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002421 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002422 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002423 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002424}
2425
Willy Tarreau87b09662015-04-03 00:22:06 +02002426/* Update the stream's backend and server time stats */
2427void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002428{
2429 int t_request;
2430 int t_queue;
2431 int t_connect;
2432 int t_data;
2433 int t_close;
2434 struct server *srv;
2435
2436 t_request = 0;
2437 t_queue = s->logs.t_queue;
2438 t_connect = s->logs.t_connect;
2439 t_close = s->logs.t_close;
2440 t_data = s->logs.t_data;
2441
2442 if (s->be->mode != PR_MODE_HTTP)
2443 t_data = t_connect;
2444
2445 if (t_connect < 0 || t_data < 0)
2446 return;
2447
2448 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2449 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2450
2451 t_data -= t_connect;
2452 t_connect -= t_queue;
2453 t_queue -= t_request;
2454
2455 srv = objt_server(s->target);
2456 if (srv) {
2457 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2458 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2459 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2460 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2461 }
2462 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2463 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2464 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2465 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
2466}
2467
Willy Tarreau7c669d72008-06-20 15:04:11 +02002468/*
2469 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002470 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002471 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002472 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002473 * server.
2474 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002475void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002476{
2477 if (sess->srv_conn == newsrv)
2478 return;
2479
2480 if (sess->srv_conn) {
2481 sess->srv_conn->served--;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002482 sess->srv_conn->proxy->served--;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002483 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2484 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002485 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002486 }
2487
2488 if (newsrv) {
2489 newsrv->served++;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002490 newsrv->proxy->served++;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002491 if (newsrv->proxy->lbprm.server_take_conn)
2492 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002493 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002494 }
2495}
2496
Willy Tarreau84455332009-03-15 22:34:05 +01002497/* Handle server-side errors for default protocols. It is called whenever a a
2498 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002499 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002500 * them. It's installed as ->srv_error for the server-side stream_interface.
2501 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002502void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002503{
2504 int err_type = si->err_type;
2505 int err = 0, fin = 0;
2506
2507 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002508 err = SF_ERR_CLICL;
2509 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002510 }
2511 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002512 err = SF_ERR_CLICL;
2513 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002514 }
2515 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002516 err = SF_ERR_SRVTO;
2517 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002518 }
2519 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002520 err = SF_ERR_SRVCL;
2521 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002522 }
2523 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002524 err = SF_ERR_SRVTO;
2525 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002526 }
2527 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002528 err = SF_ERR_SRVCL;
2529 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002530 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002531 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002532 err = SF_ERR_RESOURCE;
2533 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002534 }
Willy Tarreau84455332009-03-15 22:34:05 +01002535 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002536 err = SF_ERR_INTERNAL;
2537 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002538 }
2539
Willy Tarreaue7dff022015-04-03 01:14:29 +02002540 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002541 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002542 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002543 s->flags |= fin;
2544}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002545
Willy Tarreaue7dff022015-04-03 01:14:29 +02002546/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002547void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002548{
Willy Tarreau87b09662015-04-03 00:22:06 +02002549 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002550 return;
2551
Willy Tarreau87b09662015-04-03 00:22:06 +02002552 channel_shutw_now(&stream->req);
2553 channel_shutr_now(&stream->res);
2554 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002555 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002556 stream->flags |= why;
2557 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002558}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002559
Willy Tarreau8b22a712010-06-18 17:46:06 +02002560/************************************************************************/
2561/* All supported ACL keywords must be declared here. */
2562/************************************************************************/
2563
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002564/* 0=OK, <0=Alert, >0=Warning */
2565static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2566 struct proxy *px, struct act_rule *rule,
2567 char **err)
2568{
2569 struct action_kw *kw;
2570
2571 /* Check if the service name exists. */
2572 if (*(args[*cur_arg]) == 0) {
2573 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002574 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002575 }
2576
2577 /* lookup for keyword corresponding to a service. */
2578 kw = action_lookup(&service_keywords, args[*cur_arg]);
2579 if (!kw) {
2580 memprintf(err, "'%s' unknown service name.", args[1]);
2581 return ACT_RET_PRS_ERR;
2582 }
2583 (*cur_arg)++;
2584
2585 /* executes specific rule parser. */
2586 rule->kw = kw;
2587 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2588 return ACT_RET_PRS_ERR;
2589
2590 /* Register processing function. */
2591 rule->action_ptr = process_use_service;
2592 rule->action = ACT_CUSTOM;
2593
2594 return ACT_RET_PRS_OK;
2595}
2596
2597void service_keywords_register(struct action_kw_list *kw_list)
2598{
2599 LIST_ADDQ(&service_keywords, &kw_list->list);
2600}
2601
William Lallemand4c5b4d52016-11-21 08:51:11 +01002602
2603/* This function dumps a complete stream state onto the stream interface's
2604 * read buffer. The stream has to be set in strm. It returns 0 if the output
2605 * buffer is full and it needs to be called again, otherwise non-zero. It is
2606 * designed to be called from stats_dump_strm_to_buffer() below.
2607 */
2608static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2609{
2610 struct appctx *appctx = __objt_appctx(si->end);
2611 struct tm tm;
2612 extern const char *monthname[12];
2613 char pn[INET6_ADDRSTRLEN];
2614 struct connection *conn;
2615 struct appctx *tmpctx;
2616
2617 chunk_reset(&trash);
2618
2619 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2620 /* stream changed, no need to go any further */
2621 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
2622 if (bi_putchk(si_ic(si), &trash) == -1) {
2623 si_applet_cant_put(si);
2624 return 0;
2625 }
2626 appctx->ctx.sess.uid = 0;
2627 appctx->ctx.sess.section = 0;
2628 return 1;
2629 }
2630
2631 switch (appctx->ctx.sess.section) {
2632 case 0: /* main status of the stream */
2633 appctx->ctx.sess.uid = strm->uniq_id;
2634 appctx->ctx.sess.section = 1;
2635 /* fall through */
2636
2637 case 1:
2638 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2639 chunk_appendf(&trash,
2640 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2641 strm,
2642 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2643 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2644 strm->uniq_id,
2645 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2646
2647 conn = objt_conn(strm_orig(strm));
2648 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2649 case AF_INET:
2650 case AF_INET6:
2651 chunk_appendf(&trash, " source=%s:%d\n",
2652 pn, get_host_port(&conn->addr.from));
2653 break;
2654 case AF_UNIX:
2655 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2656 break;
2657 default:
2658 /* no more information to print right now */
2659 chunk_appendf(&trash, "\n");
2660 break;
2661 }
2662
2663 chunk_appendf(&trash,
2664 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2665 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2666
2667 chunk_appendf(&trash,
2668 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2669 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2670 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2671 strm_li(strm) ? strm_li(strm)->luid : 0);
2672
2673 if (conn)
2674 conn_get_to_addr(conn);
2675
2676 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2677 case AF_INET:
2678 case AF_INET6:
2679 chunk_appendf(&trash, " addr=%s:%d\n",
2680 pn, get_host_port(&conn->addr.to));
2681 break;
2682 case AF_UNIX:
2683 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2684 break;
2685 default:
2686 /* no more information to print right now */
2687 chunk_appendf(&trash, "\n");
2688 break;
2689 }
2690
2691 if (strm->be->cap & PR_CAP_BE)
2692 chunk_appendf(&trash,
2693 " backend=%s (id=%u mode=%s)",
2694 strm->be->id,
2695 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2696 else
2697 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2698
2699 conn = objt_conn(strm->si[1].end);
2700 if (conn)
2701 conn_get_from_addr(conn);
2702
2703 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2704 case AF_INET:
2705 case AF_INET6:
2706 chunk_appendf(&trash, " addr=%s:%d\n",
2707 pn, get_host_port(&conn->addr.from));
2708 break;
2709 case AF_UNIX:
2710 chunk_appendf(&trash, " addr=unix\n");
2711 break;
2712 default:
2713 /* no more information to print right now */
2714 chunk_appendf(&trash, "\n");
2715 break;
2716 }
2717
2718 if (strm->be->cap & PR_CAP_BE)
2719 chunk_appendf(&trash,
2720 " server=%s (id=%u)",
2721 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2722 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2723 else
2724 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2725
2726 if (conn)
2727 conn_get_to_addr(conn);
2728
2729 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2730 case AF_INET:
2731 case AF_INET6:
2732 chunk_appendf(&trash, " addr=%s:%d\n",
2733 pn, get_host_port(&conn->addr.to));
2734 break;
2735 case AF_UNIX:
2736 chunk_appendf(&trash, " addr=unix\n");
2737 break;
2738 default:
2739 /* no more information to print right now */
2740 chunk_appendf(&trash, "\n");
2741 break;
2742 }
2743
2744 chunk_appendf(&trash,
2745 " task=%p (state=0x%02x nice=%d calls=%d exp=%s%s",
2746 strm->task,
2747 strm->task->state,
2748 strm->task->nice, strm->task->calls,
2749 strm->task->expire ?
2750 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2751 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2752 TICKS_TO_MS(1000)) : "<NEVER>",
2753 task_in_rq(strm->task) ? ", running" : "");
2754
2755 chunk_appendf(&trash,
2756 " age=%s)\n",
2757 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2758
2759 if (strm->txn)
2760 chunk_appendf(&trash,
2761 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2762 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002763 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 +01002764
2765 chunk_appendf(&trash,
2766 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2767 &strm->si[0],
2768 si_state_str(strm->si[0].state),
2769 strm->si[0].flags,
2770 obj_type_name(strm->si[0].end),
2771 obj_base_ptr(strm->si[0].end),
2772 strm->si[0].exp ?
2773 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2774 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2775 TICKS_TO_MS(1000)) : "<NEVER>",
2776 strm->si[0].err_type);
2777
2778 chunk_appendf(&trash,
2779 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2780 &strm->si[1],
2781 si_state_str(strm->si[1].state),
2782 strm->si[1].flags,
2783 obj_type_name(strm->si[1].end),
2784 obj_base_ptr(strm->si[1].end),
2785 strm->si[1].exp ?
2786 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2787 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2788 TICKS_TO_MS(1000)) : "<NEVER>",
2789 strm->si[1].err_type);
2790
2791 if ((conn = objt_conn(strm->si[0].end)) != NULL) {
2792 chunk_appendf(&trash,
2793 " co0=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2794 conn,
2795 conn_get_ctrl_name(conn),
2796 conn_get_xprt_name(conn),
2797 conn_get_data_name(conn),
2798 obj_type_name(conn->target),
2799 obj_base_ptr(conn->target));
2800
2801 chunk_appendf(&trash,
2802 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2803 conn->flags,
2804 conn->t.sock.fd,
2805 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].state : 0,
2806 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].cache : 0,
2807 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].updated : 0);
2808 }
2809 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2810 chunk_appendf(&trash,
2811 " app0=%p st0=%d st1=%d st2=%d applet=%s\n",
2812 tmpctx,
2813 tmpctx->st0,
2814 tmpctx->st1,
2815 tmpctx->st2,
2816 tmpctx->applet->name);
2817 }
2818
2819 if ((conn = objt_conn(strm->si[1].end)) != NULL) {
2820 chunk_appendf(&trash,
2821 " co1=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2822 conn,
2823 conn_get_ctrl_name(conn),
2824 conn_get_xprt_name(conn),
2825 conn_get_data_name(conn),
2826 obj_type_name(conn->target),
2827 obj_base_ptr(conn->target));
2828
2829 chunk_appendf(&trash,
2830 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2831 conn->flags,
2832 conn->t.sock.fd,
2833 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].state : 0,
2834 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].cache : 0,
2835 conn->t.sock.fd >= 0 ? fdtab[conn->t.sock.fd].updated : 0);
2836 }
2837 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
2838 chunk_appendf(&trash,
2839 " app1=%p st0=%d st1=%d st2=%d applet=%s\n",
2840 tmpctx,
2841 tmpctx->st0,
2842 tmpctx->st1,
2843 tmpctx->st2,
2844 tmpctx->applet->name);
2845 }
2846
2847 chunk_appendf(&trash,
2848 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2849 " an_exp=%s",
2850 &strm->req,
2851 strm->req.flags, strm->req.analysers,
2852 strm->req.pipe ? strm->req.pipe->data : 0,
2853 strm->req.to_forward, strm->req.total,
2854 strm->req.analyse_exp ?
2855 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
2856 TICKS_TO_MS(1000)) : "<NEVER>");
2857
2858 chunk_appendf(&trash,
2859 " rex=%s",
2860 strm->req.rex ?
2861 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
2862 TICKS_TO_MS(1000)) : "<NEVER>");
2863
2864 chunk_appendf(&trash,
2865 " wex=%s\n"
2866 " buf=%p data=%p o=%d p=%d req.next=%d i=%d size=%d\n",
2867 strm->req.wex ?
2868 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
2869 TICKS_TO_MS(1000)) : "<NEVER>",
2870 strm->req.buf,
2871 strm->req.buf->data, strm->req.buf->o,
2872 (int)(strm->req.buf->p - strm->req.buf->data),
2873 strm->txn ? strm->txn->req.next : 0, strm->req.buf->i,
2874 strm->req.buf->size);
2875
2876 chunk_appendf(&trash,
2877 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2878 " an_exp=%s",
2879 &strm->res,
2880 strm->res.flags, strm->res.analysers,
2881 strm->res.pipe ? strm->res.pipe->data : 0,
2882 strm->res.to_forward, strm->res.total,
2883 strm->res.analyse_exp ?
2884 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
2885 TICKS_TO_MS(1000)) : "<NEVER>");
2886
2887 chunk_appendf(&trash,
2888 " rex=%s",
2889 strm->res.rex ?
2890 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
2891 TICKS_TO_MS(1000)) : "<NEVER>");
2892
2893 chunk_appendf(&trash,
2894 " wex=%s\n"
2895 " buf=%p data=%p o=%d p=%d rsp.next=%d i=%d size=%d\n",
2896 strm->res.wex ?
2897 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
2898 TICKS_TO_MS(1000)) : "<NEVER>",
2899 strm->res.buf,
2900 strm->res.buf->data, strm->res.buf->o,
2901 (int)(strm->res.buf->p - strm->res.buf->data),
2902 strm->txn ? strm->txn->rsp.next : 0, strm->res.buf->i,
2903 strm->res.buf->size);
2904
2905 if (bi_putchk(si_ic(si), &trash) == -1) {
2906 si_applet_cant_put(si);
2907 return 0;
2908 }
2909
2910 /* use other states to dump the contents */
2911 }
2912 /* end of dump */
2913 appctx->ctx.sess.uid = 0;
2914 appctx->ctx.sess.section = 0;
2915 return 1;
2916}
2917
2918
2919static int cli_parse_show_sess(char **args, struct appctx *appctx, void *private)
2920{
William Lallemand4c5b4d52016-11-21 08:51:11 +01002921 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2922 return 1;
2923
2924 if (*args[2] && strcmp(args[2], "all") == 0)
2925 appctx->ctx.sess.target = (void *)-1;
2926 else if (*args[2])
2927 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
2928 else
2929 appctx->ctx.sess.target = NULL;
2930 appctx->ctx.sess.section = 0; /* start with stream status */
2931 appctx->ctx.sess.pos = 0;
2932
2933 return 0;
2934}
2935
2936/* This function dumps all streams' states onto the stream interface's
2937 * read buffer. It returns 0 if the output buffer is full and it needs
2938 * to be called again, otherwise non-zero. It is designed to be called
2939 * from stats_dump_sess_to_buffer() below.
2940 */
2941static int cli_io_handler_dump_sess(struct appctx *appctx)
2942{
2943 struct stream_interface *si = appctx->owner;
2944 struct connection *conn;
2945
2946 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
2947 /* If we're forced to shut down, we might have to remove our
2948 * reference to the last stream being dumped.
2949 */
2950 if (appctx->st2 == STAT_ST_LIST) {
2951 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
2952 LIST_DEL(&appctx->ctx.sess.bref.users);
2953 LIST_INIT(&appctx->ctx.sess.bref.users);
2954 }
2955 }
2956 return 1;
2957 }
2958
2959 chunk_reset(&trash);
2960
2961 switch (appctx->st2) {
2962 case STAT_ST_INIT:
2963 /* the function had not been called yet, let's prepare the
2964 * buffer for a response. We initialize the current stream
2965 * pointer to the first in the global list. When a target
2966 * stream is being destroyed, it is responsible for updating
2967 * this pointer. We know we have reached the end when this
2968 * pointer points back to the head of the streams list.
2969 */
2970 LIST_INIT(&appctx->ctx.sess.bref.users);
2971 appctx->ctx.sess.bref.ref = streams.n;
2972 appctx->st2 = STAT_ST_LIST;
2973 /* fall through */
2974
2975 case STAT_ST_LIST:
2976 /* first, let's detach the back-ref from a possible previous stream */
2977 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
2978 LIST_DEL(&appctx->ctx.sess.bref.users);
2979 LIST_INIT(&appctx->ctx.sess.bref.users);
2980 }
2981
2982 /* and start from where we stopped */
2983 while (appctx->ctx.sess.bref.ref != &streams) {
2984 char pn[INET6_ADDRSTRLEN];
2985 struct stream *curr_strm;
2986
2987 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
2988
2989 if (appctx->ctx.sess.target) {
2990 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
2991 goto next_sess;
2992
2993 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
2994 /* call the proper dump() function and return if we're missing space */
2995 if (!stats_dump_full_strm_to_buffer(si, curr_strm))
2996 return 0;
2997
2998 /* stream dump complete */
2999 LIST_DEL(&appctx->ctx.sess.bref.users);
3000 LIST_INIT(&appctx->ctx.sess.bref.users);
3001 if (appctx->ctx.sess.target != (void *)-1) {
3002 appctx->ctx.sess.target = NULL;
3003 break;
3004 }
3005 else
3006 goto next_sess;
3007 }
3008
3009 chunk_appendf(&trash,
3010 "%p: proto=%s",
3011 curr_strm,
3012 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3013
3014 conn = objt_conn(strm_orig(curr_strm));
3015 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3016 case AF_INET:
3017 case AF_INET6:
3018 chunk_appendf(&trash,
3019 " src=%s:%d fe=%s be=%s srv=%s",
3020 pn,
3021 get_host_port(&conn->addr.from),
3022 strm_fe(curr_strm)->id,
3023 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3024 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3025 );
3026 break;
3027 case AF_UNIX:
3028 chunk_appendf(&trash,
3029 " src=unix:%d fe=%s be=%s srv=%s",
3030 strm_li(curr_strm)->luid,
3031 strm_fe(curr_strm)->id,
3032 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3033 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3034 );
3035 break;
3036 }
3037
3038 chunk_appendf(&trash,
3039 " ts=%02x age=%s calls=%d",
3040 curr_strm->task->state,
3041 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3042 curr_strm->task->calls);
3043
3044 chunk_appendf(&trash,
3045 " rq[f=%06xh,i=%d,an=%02xh,rx=%s",
3046 curr_strm->req.flags,
3047 curr_strm->req.buf->i,
3048 curr_strm->req.analysers,
3049 curr_strm->req.rex ?
3050 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3051 TICKS_TO_MS(1000)) : "");
3052
3053 chunk_appendf(&trash,
3054 ",wx=%s",
3055 curr_strm->req.wex ?
3056 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3057 TICKS_TO_MS(1000)) : "");
3058
3059 chunk_appendf(&trash,
3060 ",ax=%s]",
3061 curr_strm->req.analyse_exp ?
3062 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3063 TICKS_TO_MS(1000)) : "");
3064
3065 chunk_appendf(&trash,
3066 " rp[f=%06xh,i=%d,an=%02xh,rx=%s",
3067 curr_strm->res.flags,
3068 curr_strm->res.buf->i,
3069 curr_strm->res.analysers,
3070 curr_strm->res.rex ?
3071 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3072 TICKS_TO_MS(1000)) : "");
3073
3074 chunk_appendf(&trash,
3075 ",wx=%s",
3076 curr_strm->res.wex ?
3077 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3078 TICKS_TO_MS(1000)) : "");
3079
3080 chunk_appendf(&trash,
3081 ",ax=%s]",
3082 curr_strm->res.analyse_exp ?
3083 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3084 TICKS_TO_MS(1000)) : "");
3085
3086 conn = objt_conn(curr_strm->si[0].end);
3087 chunk_appendf(&trash,
3088 " s0=[%d,%1xh,fd=%d,ex=%s]",
3089 curr_strm->si[0].state,
3090 curr_strm->si[0].flags,
3091 conn ? conn->t.sock.fd : -1,
3092 curr_strm->si[0].exp ?
3093 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3094 TICKS_TO_MS(1000)) : "");
3095
3096 conn = objt_conn(curr_strm->si[1].end);
3097 chunk_appendf(&trash,
3098 " s1=[%d,%1xh,fd=%d,ex=%s]",
3099 curr_strm->si[1].state,
3100 curr_strm->si[1].flags,
3101 conn ? conn->t.sock.fd : -1,
3102 curr_strm->si[1].exp ?
3103 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3104 TICKS_TO_MS(1000)) : "");
3105
3106 chunk_appendf(&trash,
3107 " exp=%s",
3108 curr_strm->task->expire ?
3109 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3110 TICKS_TO_MS(1000)) : "");
3111 if (task_in_rq(curr_strm->task))
3112 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3113
3114 chunk_appendf(&trash, "\n");
3115
3116 if (bi_putchk(si_ic(si), &trash) == -1) {
3117 /* let's try again later from this stream. We add ourselves into
3118 * this stream's users so that it can remove us upon termination.
3119 */
3120 si_applet_cant_put(si);
3121 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3122 return 0;
3123 }
3124
3125 next_sess:
3126 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3127 }
3128
3129 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3130 /* specified stream not found */
3131 if (appctx->ctx.sess.section > 0)
3132 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3133 else
3134 chunk_appendf(&trash, "Session not found.\n");
3135
3136 if (bi_putchk(si_ic(si), &trash) == -1) {
3137 si_applet_cant_put(si);
3138 return 0;
3139 }
3140
3141 appctx->ctx.sess.target = NULL;
3142 appctx->ctx.sess.uid = 0;
3143 return 1;
3144 }
3145
3146 appctx->st2 = STAT_ST_FIN;
3147 /* fall through */
3148
3149 default:
3150 appctx->st2 = STAT_ST_FIN;
3151 return 1;
3152 }
3153}
3154
3155static void cli_release_show_sess(struct appctx *appctx)
3156{
3157 if (appctx->st2 == STAT_ST_LIST) {
3158 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3159 LIST_DEL(&appctx->ctx.sess.bref.users);
3160 }
3161}
3162
Willy Tarreau61b65212016-11-24 11:09:25 +01003163/* Parses the "shutdown session" directive, it always returns 1 */
3164static int cli_parse_shutdown_session(char **args, struct appctx *appctx, void *private)
3165{
3166 struct stream *strm, *ptr;
3167
3168 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3169 return 1;
3170
3171 if (!*args[2]) {
3172 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003173 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003174 return 1;
3175 }
3176
3177 ptr = (void *)strtoul(args[2], NULL, 0);
3178
3179 /* first, look for the requested stream in the stream table */
3180 list_for_each_entry(strm, &streams, list) {
3181 if (strm == ptr)
3182 break;
3183 }
3184
3185 /* do we have the stream ? */
3186 if (strm != ptr) {
3187 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003188 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003189 return 1;
3190 }
3191
3192 stream_shutdown(strm, SF_ERR_KILLED);
3193 return 1;
3194}
3195
Willy Tarreau4e46b622016-11-23 16:50:48 +01003196/* Parses the "shutdown session server" directive, it always returns 1 */
3197static int cli_parse_shutdown_sessions_server(char **args, struct appctx *appctx, void *private)
3198{
3199 struct server *sv;
3200 struct stream *strm, *strm_bck;
3201
3202 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3203 return 1;
3204
3205 sv = cli_find_server(appctx, args[3]);
3206 if (!sv)
3207 return 1;
3208
3209 /* kill all the stream that are on this server */
3210 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3211 if (strm->srv_conn == sv)
3212 stream_shutdown(strm, SF_ERR_KILLED);
3213 return 1;
3214}
3215
William Lallemand4c5b4d52016-11-21 08:51:11 +01003216/* register cli keywords */
3217static struct cli_kw_list cli_kws = {{ },{
3218 { { "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 +01003219 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003220 { { "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 +01003221 {{},}
3222}};
3223
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003224/* main configuration keyword registration. */
3225static struct action_kw_list stream_tcp_keywords = { ILH, {
3226 { "use-service", stream_parse_use_service },
3227 { /* END */ }
3228}};
3229
3230static struct action_kw_list stream_http_keywords = { ILH, {
3231 { "use-service", stream_parse_use_service },
3232 { /* END */ }
3233}};
3234
Willy Tarreau8b22a712010-06-18 17:46:06 +02003235__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003236static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003237{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003238 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3239 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003240 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003241}
3242
Willy Tarreaubaaee002006-06-26 02:48:02 +02003243/*
3244 * Local variables:
3245 * c-indent-level: 8
3246 * c-basic-offset: 8
3247 * End:
3248 */