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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>
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +020022#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020023
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020024#include <types/applet.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020025#include <types/capture.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010026#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020027#include <types/filters.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010028#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010029#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020030
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020031#include <proto/acl.h>
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020032#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020033#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010034#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020035#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010036#include <proto/checks.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010037#include <proto/cli.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020038#include <proto/connection.h>
William Lallemand9ed62032016-11-21 17:49:11 +010039#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020040#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020041#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020042#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020043#include <proto/frontend.h>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010044#include <proto/hdr_idx.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010045#include <proto/hlua.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020046#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020047#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020048#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020049#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020050#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010051#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010052#include <proto/proto_http.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020053#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020054#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010055#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020056#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010057#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010058#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010059#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010060#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020061#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020062
Willy Tarreaubafbe012017-11-24 17:34:44 +010063struct pool_head *pool_head_stream;
Willy Tarreau87b09662015-04-03 00:22:06 +020064struct list streams;
Christopher Faulet9dcf9b62017-11-13 10:34:01 +010065__decl_hathreads(HA_SPINLOCK_T streams_lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +020066
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020067/* List of all use-service keywords. */
68static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
69
Willy Tarreau5790eb02017-08-28 17:18:36 +020070
71/* Create a new stream for connection <conn>. Return < 0 on error. This is only
72 * valid right after the handshake, before the connection's data layer is
73 * initialized, because it relies on the session to be in conn->owner.
74 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +020075int stream_create_from_cs(struct conn_stream *cs)
Willy Tarreau5790eb02017-08-28 17:18:36 +020076{
77 struct stream *strm;
78
Olivier Houchard9aaf7782017-09-13 18:30:23 +020079 strm = stream_new(cs->conn->owner, &cs->obj_type);
Willy Tarreau5790eb02017-08-28 17:18:36 +020080 if (strm == NULL)
81 return -1;
82
83 task_wakeup(strm->task, TASK_WOKEN_INIT);
84 return 0;
85}
86
Willy Tarreau9903f0e2015-04-04 18:50:31 +020087/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +020088 * handshake, in order to complete initialization of a valid stream. It must be
Willy Tarreau87787ac2017-08-28 16:22:54 +020089 * called with a completley initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +020090 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +020091 * end point is assigned to <origin>, which must be valid. The stream's task
92 * is configured with a nice value inherited from the listener's nice if any.
93 * The task's context is set to the new stream, and its function is set to
94 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +020095 */
Willy Tarreau87787ac2017-08-28 16:22:54 +020096struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +020097{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +020098 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +020099 struct task *t;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200100 struct conn_stream *cs = objt_cs(origin);
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200101 struct appctx *appctx = objt_appctx(origin);
Willy Tarreau2542b532012-08-31 16:01:23 +0200102
Willy Tarreaubafbe012017-11-24 17:34:44 +0100103 if (unlikely((s = pool_alloc(pool_head_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200104 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200105
106 /* minimum stream initialization required for an embryonic stream is
107 * fairly low. We need very little to execute L4 ACLs, then we need a
108 * task to make the client-side connection live on its own.
109 * - flags
110 * - stick-entry tracking
111 */
112 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200113 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200114 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200115 s->logs.accept_date = sess->accept_date; /* user-visible date for logging */
116 s->logs.tv_accept = sess->tv_accept; /* corrected date for internal use */
Willy Tarreau590a0512018-09-05 11:56:48 +0200117 s->logs.t_handshake = sess->t_handshake;
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200118 s->logs.t_idle = -1;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200119 tv_zero(&s->logs.tv_request);
120 s->logs.t_queue = -1;
121 s->logs.t_connect = -1;
122 s->logs.t_data = -1;
123 s->logs.t_close = 0;
124 s->logs.bytes_in = s->logs.bytes_out = 0;
Patrick Hemmerffe5e8c2018-05-11 12:52:31 -0400125 s->logs.prx_queue_pos = 0; /* we get the number of pending conns before us */
126 s->logs.srv_queue_pos = 0; /* we will get this number soon */
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200127
128 /* default logging function */
129 s->do_log = strm_log;
130
131 /* default error reporting function, may be changed by analysers */
132 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200133
134 /* Initialise the current rule list pointer to NULL. We are sure that
135 * any rulelist match the NULL pointer.
136 */
137 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200138 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200139
Willy Tarreaua68f7622015-09-21 17:48:24 +0200140 /* Copy SC counters for the stream. We don't touch refcounts because
141 * any reference we have is inherited from the session. Since the stream
142 * doesn't exist without the session, the session's existence guarantees
143 * we don't lose the entry. During the store operation, the stream won't
144 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200145 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200146 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200147
148 s->sess = sess;
149 s->si[0].flags = SI_FL_NONE;
150 s->si[1].flags = SI_FL_ISBACK;
151
Willy Tarreau90a7c032018-09-05 16:21:29 +0200152 s->uniq_id = HA_ATOMIC_XADD(&global.req_count, 1);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200153
Willy Tarreau87b09662015-04-03 00:22:06 +0200154 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200155 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100156
157 LIST_INIT(&s->buffer_wait.list);
158 s->buffer_wait.target = s;
159 s->buffer_wait.wakeup_cb = (int (*)(void *))stream_res_wakeup;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200160
Willy Tarreaue7dff022015-04-03 01:14:29 +0200161 s->flags |= SF_INITIALIZED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200162 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200163
Emeric Brunc60def82017-09-27 14:59:38 +0200164 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200165 goto out_fail_alloc;
166
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200167 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100168 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200169 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200170 t->context = s;
171 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200172 if (sess->listener)
173 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200174
Willy Tarreau87b09662015-04-03 00:22:06 +0200175 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200176 * This changes later when switching rules are executed or
177 * when the default backend is assigned.
178 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200179 s->be = sess->fe;
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200180 s->req.buf = BUF_NULL;
181 s->res.buf = BUF_NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200182 s->req_cap = NULL;
183 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200184
Willy Tarreauebcd4842015-06-19 11:59:02 +0200185 /* Initialise all the variables contexts even if not used.
186 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200187 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200188 vars_init(&s->vars_txn, SCOPE_TXN);
189 vars_init(&s->vars_reqres, SCOPE_REQ);
190
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200191 /* this part should be common with other protocols */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200192 if (si_reset(&s->si[0]) < 0)
193 goto out_fail_alloc;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200194 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100195 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200196
Willy Tarreau984fca92017-12-20 16:31:43 +0100197 if (cs && cs->conn->mux && cs->conn->mux->flags & MX_FL_CLEAN_ABRT)
198 s->si[0].flags |= SI_FL_CLEAN_ABRT;
199
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200200 /* attach the incoming connection to the stream interface now. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200201 if (cs)
202 si_attach_cs(&s->si[0], cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200203 else if (appctx)
204 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200205
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200206 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200207 s->si[0].flags |= SI_FL_INDEP_STR;
208
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200209 /* pre-initialize the other side's stream interface to an INIT state. The
210 * callbacks will be initialized before attempting to connect.
211 */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200212 if (si_reset(&s->si[1]) < 0)
213 goto out_fail_alloc_si1;
Hongbo Longe39683c2017-03-10 18:41:51 +0100214 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200215
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200216 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200217 s->si[1].flags |= SI_FL_INDEP_STR;
218
Willy Tarreau87b09662015-04-03 00:22:06 +0200219 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100220 s->target = sess->listener ? sess->listener->default_target : NULL;
221
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200222 s->pend_pos = NULL;
Patrick Hemmer268a7072018-05-11 12:52:31 -0400223 s->priority_class = 0;
224 s->priority_offset = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200225
226 /* init store persistence */
227 s->store_count = 0;
228
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100229 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100230 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100231 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaue223e3b2017-11-18 15:39:10 +0100232
233 if (!sess->fe->fe_req_ana) {
234 channel_auto_connect(&s->req); /* don't wait to establish connection */
235 channel_auto_close(&s->req); /* let the producer forward close requests */
236 }
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200237
238 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100239 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100240 s->req.rex = TICK_ETERNITY;
241 s->req.wex = TICK_ETERNITY;
242 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200243
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100244 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100245 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100246 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200247
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200248 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100249 s->req.flags |= CF_NEVER_WAIT;
250 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200251 }
252
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200253 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100254 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100255 s->res.rex = TICK_ETERNITY;
256 s->res.wex = TICK_ETERNITY;
257 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200258
Willy Tarreaueee5b512015-04-03 23:46:31 +0200259 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100260 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100261
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100262 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200263 LIST_ADDQ(&streams, &s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100264 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200265
Christopher Faulet92d36382015-11-05 13:35:03 +0100266 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200267 goto out_fail_accept;
268
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200269 /* finish initialization of the accepted file descriptor */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200270 if (cs)
271 cs_want_recv(cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200272 else if (appctx)
Willy Tarreaufe127932015-04-21 19:23:39 +0200273 si_applet_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200274
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200275 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200276 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200277
278 /* it is important not to call the wakeup function directly but to
279 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200280 * priorities to tasks. Using multi thread we must be sure that
281 * stream is fully initialized before calling task_wakeup. So
282 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200283 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200284 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200285
286 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200287 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100288 flt_stream_release(s, 0);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200289 task_free(t);
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200290 tasklet_free(s->si[1].wait_list.task);
291out_fail_alloc_si1:
292 tasklet_free(s->si[0].wait_list.task);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200293 out_fail_alloc:
Willy Tarreau3b246412014-11-25 17:10:33 +0100294 LIST_DEL(&s->list);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100295 pool_free(pool_head_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200296 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200297}
298
Willy Tarreaubaaee002006-06-26 02:48:02 +0200299/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200300 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200301 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200302static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200303{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200304 struct session *sess = strm_sess(s);
305 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100306 struct bref *bref, *back;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200307 struct conn_stream *cli_cs = objt_cs(s->si[0].end);
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100308 int must_free_sess;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200309 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100310
Willy Tarreaud0ad4a82018-07-25 11:13:53 +0200311 pendconn_free(s);
Willy Tarreau922a8062008-12-04 09:33:58 +0100312
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100313 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200314 if (s->flags & SF_CURR_SESS) {
315 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200316 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau1e62de62008-11-11 20:20:02 +0100317 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100318 if (may_dequeue_tasks(objt_server(s->target), s->be))
319 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100320 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100321
Willy Tarreau7c669d72008-06-20 15:04:11 +0200322 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200323 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200324 * it should normally be only the same as the one above,
325 * so this should not happen in fact.
326 */
327 sess_change_server(s, NULL);
328 }
329
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100330 if (s->req.pipe)
331 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100332
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100333 if (s->res.pipe)
334 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100335
Willy Tarreaubf883e02014-11-25 21:10:35 +0100336 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100337 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100338 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100339 LIST_DEL(&s->buffer_wait.list);
340 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100341 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100342 }
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200343 if (s->req.buf.size || s->res.buf.size) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100344 b_drop(&s->req.buf);
345 b_drop(&s->res.buf);
Olivier Houchard673867c2018-05-25 16:58:52 +0200346 offer_buffers(NULL, tasks_run_queue);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100347 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200348
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100349 hlua_ctx_destroy(s->hlua);
350 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200351 if (s->txn)
352 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100353
Willy Tarreau1e954912012-10-12 17:50:05 +0200354 /* ensure the client-side transport layer is destroyed */
Willy Tarreau32560732017-10-08 11:33:44 +0200355 if (cli_cs)
356 cs_close(cli_cs);
Willy Tarreau1e954912012-10-12 17:50:05 +0200357
Willy Tarreaua4cda672010-06-06 18:28:49 +0200358 for (i = 0; i < s->store_count; i++) {
359 if (!s->store[i].ts)
360 continue;
361 stksess_free(s->store[i].table, s->store[i].ts);
362 s->store[i].ts = NULL;
363 }
364
Willy Tarreaueee5b512015-04-03 23:46:31 +0200365 if (s->txn) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100366 pool_free(pool_head_hdr_idx, s->txn->hdr_idx.v);
367 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200368 s->txn = NULL;
369 }
370
Christopher Fauletd7c91962015-04-30 11:48:27 +0200371 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100372 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200373
Willy Tarreau92fb9832007-10-16 17:34:28 +0200374 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100375 pool_free(fe->rsp_cap_pool, s->res_cap);
376 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200377 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100378
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200379 /* Cleanup all variable contexts. */
Willy Tarreau6204cd92016-03-10 16:33:04 +0100380 vars_prune(&s->vars_txn, s->sess, s);
381 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200382
Willy Tarreau87b09662015-04-03 00:22:06 +0200383 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200384
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100385 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100386 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100387 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200388 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100389 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100390 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100391 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200392 if (s->list.n != &streams)
393 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100394 bref->ref = s->list.n;
395 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100396 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100397 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200398
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100399 /* applets do not release session yet */
400 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
401
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200402 si_release_endpoint(&s->si[1]);
403 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200404
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100405 if (must_free_sess)
406 session_free(sess);
407
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200408 tasklet_free(s->si[0].wait_list.task);
Olivier Houchard18a85fe2018-08-21 14:25:52 +0200409 LIST_DEL(&s->si[0].wait_list.list);
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200410 tasklet_free(s->si[1].wait_list.task);
Olivier Houchard18a85fe2018-08-21 14:25:52 +0200411 LIST_DEL(&s->si[1].wait_list.list);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100412 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200413
414 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200415 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100416 pool_flush(pool_head_buffer);
417 pool_flush(pool_head_http_txn);
418 pool_flush(pool_head_hdr_idx);
419 pool_flush(pool_head_requri);
420 pool_flush(pool_head_capture);
421 pool_flush(pool_head_stream);
422 pool_flush(pool_head_session);
423 pool_flush(pool_head_connection);
424 pool_flush(pool_head_pendconn);
425 pool_flush(fe->req_cap_pool);
426 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200427 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200428}
429
Willy Tarreau656859d2014-11-25 19:46:36 +0100430
Willy Tarreau87b09662015-04-03 00:22:06 +0200431/* Allocates a work buffer for stream <s>. It is meant to be called inside
432 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200433 * to work fine, which is the response buffer so that an error message may be
434 * built and returned. Response buffers may be allocated from the reserve, this
435 * is critical to ensure that a response may always flow and will never block a
436 * server from releasing a connection. Returns 0 in case of failure, non-zero
437 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100438 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100439static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100440{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100441 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100442 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100443 LIST_DEL(&s->buffer_wait.list);
444 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100445 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100446 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100447
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200448 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100449 return 1;
450
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100451 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100452 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100453 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100454 return 0;
455}
456
457/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100458 * update() functions. It will try to wake up as many tasks/applets as the
459 * number of buffers that it releases. In practice, most often streams are
460 * blocked on a single buffer, so it makes sense to try to wake two up when two
461 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100462 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200463void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100464{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100465 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100466
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200467 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100468 offer = 1;
469 b_free(&s->req.buf);
470 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200471 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100472 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100473 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100474 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100475
Willy Tarreaubf883e02014-11-25 21:10:35 +0100476 /* if we're certain to have at least 1 buffer available, and there is
477 * someone waiting, we can wake up a waiter and offer them.
478 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100479 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200480 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100481}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200482
483/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200484int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200485{
Willy Tarreau87b09662015-04-03 00:22:06 +0200486 LIST_INIT(&streams);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100487 HA_SPIN_INIT(&streams_lock);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100488 pool_head_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
489 return pool_head_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200490}
491
Willy Tarreau87b09662015-04-03 00:22:06 +0200492void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100493{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200494 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100495 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200496 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200497 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100498 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100499
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100500 bytes = s->req.total - s->logs.bytes_in;
501 s->logs.bytes_in = s->req.total;
502 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200503 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
504 HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100505
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100506 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200507 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200508
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200509 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200510 HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200511
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100512 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200513 struct stkctr *stkctr = &s->stkctr[i];
514
Emeric Brun819fc6f2017-06-13 19:37:32 +0200515 ts = stkctr_entry(stkctr);
516 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200517 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200518 ts = stkctr_entry(stkctr);
519 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200520 continue;
521 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200522
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100523 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200524 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200525 if (ptr1)
526 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200527
Emeric Brun819fc6f2017-06-13 19:37:32 +0200528 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200529 if (ptr2)
530 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200531 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100532 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200533
534 /* If data was modified, we need to touch to re-schedule sync */
535 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200536 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100537 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100538 }
539
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100540 bytes = s->res.total - s->logs.bytes_out;
541 s->logs.bytes_out = s->res.total;
542 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200543 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
544 HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100545
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100546 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200547 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200548
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200549 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200550 HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200551
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100552 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200553 struct stkctr *stkctr = &s->stkctr[i];
554
Emeric Brun819fc6f2017-06-13 19:37:32 +0200555 ts = stkctr_entry(stkctr);
556 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200557 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200558 ts = stkctr_entry(stkctr);
559 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200560 continue;
561 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200562
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100563 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200564 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200565 if (ptr1)
566 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200567
Emeric Brun819fc6f2017-06-13 19:37:32 +0200568 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200569 if (ptr2)
570 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200571 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100572 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200573
574 /* If data was modified, we need to touch to re-schedule sync */
575 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200576 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100577 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100578 }
579}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200580
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100581/* This function is called with (si->state == SI_ST_CON) meaning that a
582 * connection was attempted and that the file descriptor is already allocated.
583 * We must check for establishment, error and abort. Possible output states
584 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
585 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200586 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100587 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200588static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100589{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100590 struct stream_interface *si = &s->si[1];
591 struct channel *req = &s->req;
592 struct channel *rep = &s->res;
Willy Tarreaua553ae92017-10-05 18:52:17 +0200593 struct conn_stream *srv_cs = __objt_cs(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100594
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100595 /* If we got an error, or if nothing happened and the connection timed
596 * out, we must give up. The CER state handler will take care of retry
597 * attempts and error reports.
598 */
599 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800600 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100601 /* Some data were sent past the connection establishment,
602 * so we need to pretend we're established to log correctly
603 * and let later states handle the failure.
604 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100605 si->state = SI_ST_EST;
606 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100607 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100608 return 1;
609 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100610 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100611 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100612
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200613 /* XXX cognet: do we really want to kill the connection here ?
614 * Probably not for multiple streams.
615 */
Willy Tarreaua553ae92017-10-05 18:52:17 +0200616 cs_close(srv_cs);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100617
618 if (si->err_type)
619 return 0;
620
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100621 if (si->flags & SI_FL_ERR)
622 si->err_type = SI_ET_CONN_ERR;
623 else
624 si->err_type = SI_ET_CONN_TO;
625 return 0;
626 }
627
628 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800629 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100630 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200631 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +0100632 ((!(req->flags & (CF_WRITE_ACTIVITY|CF_WRITE_EVENT)) && channel_is_empty(req)) ||
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100633 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100634 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200635 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100636 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100637 if (s->srv_error)
638 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100639 return 1;
640 }
641
642 /* we need to wait a bit more if there was no activity either */
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +0100643 if (!(req->flags & (CF_WRITE_ACTIVITY|CF_WRITE_EVENT)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100644 return 1;
645
646 /* OK, this means that a connection succeeded. The caller will be
647 * responsible for handling the transition from CON to EST.
648 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100649 si->state = SI_ST_EST;
650 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100651 return 1;
652}
653
654/* This function is called with (si->state == SI_ST_CER) meaning that a
655 * previous connection attempt has failed and that the file descriptor
656 * has already been released. Possible causes include asynchronous error
657 * notification and time out. Possible output states are SI_ST_CLO when
658 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
659 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
660 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
661 * marked as in error state. It returns 0.
662 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200663static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100664{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100665 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200666 struct conn_stream *cs = objt_cs(si->end);
667 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100668
Willy Tarreau87b09662015-04-03 00:22:06 +0200669 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100670 if (objt_server(s->target)) {
671 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100672
Willy Tarreaue7dff022015-04-03 01:14:29 +0200673 if (s->flags & SF_CURR_SESS) {
674 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200675 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100676 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200677
678 if ((si->flags & SI_FL_ERR) &&
679 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
680 /* We tried to connect to a server which is configured
681 * with "verify required" and which doesn't have the
682 * "verifyhost" directive. The server presented a wrong
683 * certificate (a certificate for an unexpected name),
684 * which implies that we have used SNI in the handshake,
685 * and that the server doesn't have the associated cert
686 * and presented a default one.
687 *
688 * This is a serious enough issue not to retry. It's
689 * especially important because this wrong name might
690 * either be the result of a configuration error, and
691 * retrying will only hammer the server, or is caused
692 * by the use of a wrong SNI value, most likely
693 * provided by the client and we don't want to let the
694 * client provoke retries.
695 */
696 si->conn_retries = 0;
697 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100698 }
699
700 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200701 si->conn_retries--;
702 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100703 if (!si->err_type) {
704 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100705 }
706
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100707 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200708 HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200709 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100710 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100711 if (may_dequeue_tasks(objt_server(s->target), s->be))
712 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100713
714 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200715 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100716 s->req.flags |= CF_WRITE_ERROR;
717 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100718
719 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100720 if (s->srv_error)
721 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100722 return 0;
723 }
724
725 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700726 * retry on another server. By default this redispatch occurs on the
727 * last retry, but if configured we allow redispatches to occur on
728 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200729 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100730 * bit to ignore any persistence cookie. We won't count a retry nor a
731 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200732 * If the connection is not persistent, the balancing algorithm is not
733 * determinist (round robin) and there is more than one active server,
734 * we accept to perform an immediate redispatch without waiting since
735 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100736 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200737 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700738 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200739 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100740 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700741 ((s->be->conn_retries - si->conn_retries) %
742 s->be->redispatch_after == 0)) ||
743 ((s->be->redispatch_after < 0) &&
744 ((s->be->conn_retries - si->conn_retries) %
745 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200746 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700747 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100748 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100749 if (may_dequeue_tasks(objt_server(s->target), s->be))
750 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100751
Willy Tarreaue7dff022015-04-03 01:14:29 +0200752 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100753 si->state = SI_ST_REQ;
754 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100755 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200756 HA_ATOMIC_ADD(&objt_server(s->target)->counters.retries, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200757 HA_ATOMIC_ADD(&s->be->be_counters.retries, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100758 si->state = SI_ST_ASS;
759 }
760
761 if (si->flags & SI_FL_ERR) {
762 /* The error was an asynchronous connection error, and we will
763 * likely have to retry connecting to the same server, most
764 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200765 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100766 */
767
Willy Tarreaub0290662014-06-13 17:04:44 +0200768 int delay = 1000;
769
770 if (s->be->timeout.connect && s->be->timeout.connect < delay)
771 delay = s->be->timeout.connect;
772
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100773 if (!si->err_type)
774 si->err_type = SI_ET_CONN_ERR;
775
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200776 /* only wait when we're retrying on the same server */
777 if (si->state == SI_ST_ASS ||
778 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
779 (s->be->srv_act <= 1)) {
780 si->state = SI_ST_TAR;
781 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
782 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100783 return 0;
784 }
785 return 0;
786}
787
788/*
789 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200790 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200791 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100792 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200793static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100794{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100795 struct stream_interface *si = &s->si[1];
796 struct channel *req = &s->req;
797 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100798
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100799 /* First, centralize the timers information */
800 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
801 si->exp = TICK_ETERNITY;
802
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100803 if (objt_server(s->target))
804 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100805
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100806 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100807 /* if the user wants to log as soon as possible, without counting
808 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200809 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau66425e32018-07-25 06:55:12 +0200810 /* note: no pend_pos here, session is established */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100811 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100812 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100813 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100814 }
815 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100816 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100817 }
818
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100819 if (!(s->flags & SF_TUNNEL)) {
820 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100821
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100822 /* Be sure to filter response headers if the backend is an HTTP proxy
823 * and if there are filters attached to the stream. */
824 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
825 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
826 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100827
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200828 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200829 if (req->flags & CF_WAKE_CONNECT) {
830 req->flags |= CF_WAKE_ONCE;
831 req->flags &= ~CF_WAKE_CONNECT;
832 }
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200833 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200834 /* real connections have timeouts */
835 req->wto = s->be->timeout.server;
836 rep->rto = s->be->timeout.server;
837 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100838 req->wex = TICK_ETERNITY;
839}
840
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700841/* Check if the connection request is in such a state that it can be aborted. */
842static int check_req_may_abort(struct channel *req, struct stream *s)
843{
844 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100845 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100846 (channel_is_empty(req) ||
847 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700848}
849
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100850/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
851 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100852 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
853 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
854 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100855 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200856static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100857{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100858 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100859 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100860 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100861
Christopher Faulet45073512018-07-20 10:16:29 +0200862 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%lu rqt=%lu rph=%lu rpt=%lu cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100863 now_ms, __FUNCTION__,
864 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400865 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100866 req->rex, s->res.wex,
867 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200868 ci_data(req), co_data(req), ci_data(&s->res), co_data(&s->res), s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100869
870 if (si->state == SI_ST_ASS) {
871 /* Server assigned to connection request, we have to try to connect now */
872 int conn_err;
873
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700874 /* Before we try to initiate the connection, see if the
875 * request may be aborted instead.
876 */
877 if (check_req_may_abort(req, s)) {
878 si->err_type |= SI_ET_CONN_ABRT;
879 goto abort_connection;
880 }
881
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100882 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100883 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100884
Willy Tarreaue7dff022015-04-03 01:14:29 +0200885 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100886 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100887 if (srv)
888 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500889 if (srv)
890 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100891 return;
892 }
893
894 /* We have received a synchronous error. We might have to
895 * abort, retry immediately or redispatch.
896 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200897 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100898 if (!si->err_type) {
899 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100900 }
901
Willy Tarreau827aee92011-03-10 16:55:02 +0100902 if (srv)
903 srv_inc_sess_ctr(srv);
904 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500905 srv_set_sess_last(srv);
906 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200907 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200908 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100909
Willy Tarreau87b09662015-04-03 00:22:06 +0200910 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100911 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100912 if (may_dequeue_tasks(srv, s->be))
913 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100914
915 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200916 si_shutr(si);
917 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100918 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100919
920 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
921
Willy Tarreau66425e32018-07-25 06:55:12 +0200922 /* we may need to know the position in the queue for logging */
923 pendconn_cond_unlink(s->pend_pos);
924
Willy Tarreau87b09662015-04-03 00:22:06 +0200925 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100926 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100927 if (s->srv_error)
928 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100929 return;
930 }
931
932 /* We are facing a retryable error, but we don't want to run a
933 * turn-around now, as the problem is likely a source port
934 * allocation problem, so we want to retry now.
935 */
936 si->state = SI_ST_CER;
937 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100938 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100939 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
940 return;
941 }
942 else if (si->state == SI_ST_QUE) {
943 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +0100944 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100945 /* The connection is not in the queue anymore. Either
946 * we have a server connection slot available and we
947 * go directly to the assigned state, or we need to
948 * load-balance first and go to the INI state.
949 */
950 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200951 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100952 si->state = SI_ST_REQ;
953 else {
954 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
955 si->state = SI_ST_ASS;
956 }
957 return;
958 }
959
960 /* Connection request still in queue... */
961 if (si->flags & SI_FL_EXP) {
962 /* ... and timeout expired */
963 si->exp = TICK_ETERNITY;
964 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +0200965
966 /* we may need to know the position in the queue for logging */
967 pendconn_cond_unlink(s->pend_pos);
968
Willy Tarreau827aee92011-03-10 16:55:02 +0100969 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200970 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200971 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +0200972 si_shutr(si);
973 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100974 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100975 if (!si->err_type)
976 si->err_type = SI_ET_QUEUE_TO;
977 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100978 if (s->srv_error)
979 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100980 return;
981 }
982
983 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700984 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100985 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +0200986
987 /* we may need to know the position in the queue for logging */
988 pendconn_cond_unlink(s->pend_pos);
989
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100990 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700991 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100992 }
993
994 /* Nothing changed */
995 return;
996 }
997 else if (si->state == SI_ST_TAR) {
998 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700999 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001000 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001001 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001002 }
1003
1004 if (!(si->flags & SI_FL_EXP))
1005 return; /* still in turn-around */
1006
1007 si->exp = TICK_ETERNITY;
1008
Willy Tarreau87b09662015-04-03 00:22:06 +02001009 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001010 * marked "assigned".
1011 * FIXME: Should we force a redispatch attempt when the server is down ?
1012 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001013 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001014 si->state = SI_ST_ASS;
1015 else
1016 si->state = SI_ST_REQ;
1017 return;
1018 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001019 return;
1020
1021abort_connection:
1022 /* give up */
1023 si->exp = TICK_ETERNITY;
1024 si_shutr(si);
1025 si_shutw(si);
1026 si->state = SI_ST_CLO;
1027 if (s->srv_error)
1028 s->srv_error(s, si);
1029 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001030}
1031
Willy Tarreau87b09662015-04-03 00:22:06 +02001032/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001033 * also counts a failed request if the server state has not reached the request
1034 * stage.
1035 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001036static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001037{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001038 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +09001039 if (s->si[1].state < SI_ST_REQ) {
1040
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001041 HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001042 if (strm_li(s) && strm_li(s)->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +02001043 HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001044
Willy Tarreaue7dff022015-04-03 01:14:29 +02001045 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001046 }
1047 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001048 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +09001049 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001050 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001051 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001052 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001053 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001054 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001055 }
1056}
1057
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001058/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001059 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1060 * a real connection to a server, indicating that a server has been assigned,
1061 * or SI_ST_EST for a successful connection to an applet. It may also return
1062 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001063 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001064static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001065{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001066 struct stream_interface *si = &s->si[1];
1067
Christopher Faulet45073512018-07-20 10:16:29 +02001068 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%lu rqt=%lu rph=%lu rpt=%lu cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001069 now_ms, __FUNCTION__,
1070 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001071 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001072 s->req.rex, s->res.wex,
1073 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001074 ci_data(&s->req), co_data(&s->req), ci_data(&s->res), co_data(&s->res), s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001075
1076 if (si->state != SI_ST_REQ)
1077 return;
1078
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001079 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1080 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001081 struct appctx *appctx = objt_appctx(si->end);
1082
1083 if (!appctx || appctx->applet != __objt_applet(s->target))
1084 appctx = stream_int_register_handler(si, objt_applet(s->target));
1085
1086 if (!appctx) {
1087 /* No more memory, let's immediately abort. Force the
1088 * error code to ignore the ERR_LOCAL which is not a
1089 * real error.
1090 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001091 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001092
1093 si_shutr(si);
1094 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001095 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001096 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001097 si->state = SI_ST_CLO;
1098 if (s->srv_error)
1099 s->srv_error(s, si);
1100 return;
1101 }
1102
Willy Tarreauee8269e2017-11-23 17:34:29 +01001103 if (tv_iszero(&s->logs.tv_request))
1104 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001105 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001106 si->state = SI_ST_EST;
1107 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001108 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001109 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001110 return;
1111 }
1112
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001113 /* Try to assign a server */
1114 if (srv_redispatch_connect(s) != 0) {
1115 /* We did not get a server. Either we queued the
1116 * connection request, or we encountered an error.
1117 */
1118 if (si->state == SI_ST_QUE)
1119 return;
1120
1121 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001122 si_shutr(si);
1123 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001124 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001125 if (!si->err_type)
1126 si->err_type = SI_ET_CONN_OTHER;
1127 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001128 if (s->srv_error)
1129 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001130 return;
1131 }
1132
1133 /* The server is assigned */
1134 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1135 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001136 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001137}
1138
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001139/* This function parses the use-service action ruleset. It executes
1140 * the associated ACL and set an applet as a stream or txn final node.
1141 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1142 * consistent state. It returns ACT_RET_STOP in succes case because
1143 * use-service must be a terminal action. Returns ACT_RET_YIELD
1144 * if the initialisation function require more data.
1145 */
1146enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1147 struct session *sess, struct stream *s, int flags)
1148
1149{
1150 struct appctx *appctx;
1151
1152 /* Initialises the applet if it is required. */
1153 if (flags & ACT_FLAG_FIRST) {
1154 /* Register applet. this function schedules the applet. */
1155 s->target = &rule->applet.obj_type;
1156 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1157 return ACT_RET_ERR;
1158
1159 /* Initialise the context. */
1160 appctx = si_appctx(&s->si[1]);
1161 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1162 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001163
1164 /* enable the minimally required analyzers in case of HTTP
1165 * keep-alive to properly handle keep-alive and compression
1166 * on the HTTP response.
1167 */
1168 if (rule->from == ACT_F_HTTP_REQ) {
1169 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1170 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1171 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001172 }
1173 else
1174 appctx = si_appctx(&s->si[1]);
1175
1176 /* Stops the applet sheduling, in case of the init function miss
1177 * some data.
1178 */
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001179 si_applet_stop_get(&s->si[1]);
1180
1181 /* Call initialisation. */
1182 if (rule->applet.init)
1183 switch (rule->applet.init(appctx, px, s)) {
1184 case 0: return ACT_RET_ERR;
1185 case 1: break;
1186 default: return ACT_RET_YIELD;
1187 }
1188
1189 /* Now we can schedule the applet. */
1190 si_applet_cant_get(&s->si[1]);
1191 appctx_wakeup(appctx);
1192
1193 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001194 HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001195
1196 /* The flag SF_ASSIGNED prevent from server assignment. */
1197 s->flags |= SF_ASSIGNED;
1198
1199 return ACT_RET_STOP;
1200}
1201
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001202/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001203 * if appropriate. The default_backend rule is also considered, then the
1204 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001205 * It returns 1 if the processing can continue on next analysers, or zero if it
1206 * either needs more data or wants to immediately abort the request.
1207 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001208static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001209{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001210 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001211 struct session *sess = s->sess;
1212 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001213
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001214 req->analysers &= ~an_bit;
1215 req->analyse_exp = TICK_ETERNITY;
1216
Christopher Faulet45073512018-07-20 10:16:29 +02001217 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001218 now_ms, __FUNCTION__,
1219 s,
1220 req,
1221 req->rex, req->wex,
1222 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001223 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001224 req->analysers);
1225
1226 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001227 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001228 struct switching_rule *rule;
1229
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001230 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001231 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001232
Willy Tarreauf51658d2014-04-23 01:21:56 +02001233 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001234 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001235 ret = acl_pass(ret);
1236 if (rule->cond->pol == ACL_COND_UNLESS)
1237 ret = !ret;
1238 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001239
1240 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001241 /* If the backend name is dynamic, try to resolve the name.
1242 * If we can't resolve the name, or if any error occurs, break
1243 * the loop and fallback to the default backend.
1244 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001245 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001246
1247 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001248 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001249
1250 tmp = alloc_trash_chunk();
1251 if (!tmp)
1252 goto sw_failed;
1253
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001254 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1255 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001256
1257 free_trash_chunk(tmp);
1258 tmp = NULL;
1259
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001260 if (!backend)
1261 break;
1262 }
1263 else
1264 backend = rule->be.backend;
1265
Willy Tarreau87b09662015-04-03 00:22:06 +02001266 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001267 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001268 break;
1269 }
1270 }
1271
1272 /* To ensure correct connection accounting on the backend, we
1273 * have to assign one if it was not set (eg: a listen). This
1274 * measure also takes care of correctly setting the default
1275 * backend if any.
1276 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001277 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001278 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001279 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001280 }
1281
Willy Tarreaufb356202010-08-03 14:02:05 +02001282 /* 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 +02001283 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001284 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1285 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001286 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001287 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001288
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001289 /* 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 +02001290 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001291 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001292 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001293 int ret = 1;
1294
1295 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001296 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 +01001297 ret = acl_pass(ret);
1298 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1299 ret = !ret;
1300 }
1301
1302 if (ret) {
1303 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001304 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001305 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001306 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001307 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001308 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001309 break;
1310 }
1311 }
1312
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001313 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001314
1315 sw_failed:
1316 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001317 channel_abort(&s->req);
1318 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001319
Willy Tarreaue7dff022015-04-03 01:14:29 +02001320 if (!(s->flags & SF_ERR_MASK))
1321 s->flags |= SF_ERR_RESOURCE;
1322 if (!(s->flags & SF_FINST_MASK))
1323 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001324
Willy Tarreaueee5b512015-04-03 23:46:31 +02001325 if (s->txn)
1326 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001327 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001328 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001329 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001330}
1331
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001332/* This stream analyser works on a request. It applies all use-server rules on
1333 * it then returns 1. The data must already be present in the buffer otherwise
1334 * they won't match. It always returns 1.
1335 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001336static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001337{
1338 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001339 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001340 struct server_rule *rule;
1341
Christopher Faulet45073512018-07-20 10:16:29 +02001342 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%lu analysers=%02x\n",
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001343 now_ms, __FUNCTION__,
1344 s,
1345 req,
1346 req->rex, req->wex,
1347 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001348 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001349 req->analysers);
1350
Willy Tarreaue7dff022015-04-03 01:14:29 +02001351 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001352 list_for_each_entry(rule, &px->server_rules, list) {
1353 int ret;
1354
Willy Tarreau192252e2015-04-04 01:47:55 +02001355 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001356 ret = acl_pass(ret);
1357 if (rule->cond->pol == ACL_COND_UNLESS)
1358 ret = !ret;
1359
1360 if (ret) {
1361 struct server *srv = rule->srv.ptr;
1362
Emeric Brun52a91d32017-08-31 14:41:55 +02001363 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001364 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001365 (s->flags & SF_FORCE_PRST)) {
1366 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001367 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001368 break;
1369 }
1370 /* if the server is not UP, let's go on with next rules
1371 * just in case another one is suited.
1372 */
1373 }
1374 }
1375 }
1376
1377 req->analysers &= ~an_bit;
1378 req->analyse_exp = TICK_ETERNITY;
1379 return 1;
1380}
1381
Emeric Brun1d33b292010-01-04 15:47:17 +01001382/* This stream analyser works on a request. It applies all sticking rules on
1383 * it then returns 1. The data must already be present in the buffer otherwise
1384 * they won't match. It always returns 1.
1385 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001386static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001387{
1388 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001389 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001390 struct sticking_rule *rule;
1391
Christopher Faulet45073512018-07-20 10:16:29 +02001392 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001393 now_ms, __FUNCTION__,
1394 s,
1395 req,
1396 req->rex, req->wex,
1397 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001398 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001399 req->analysers);
1400
1401 list_for_each_entry(rule, &px->sticking_rules, list) {
1402 int ret = 1 ;
1403 int i;
1404
Willy Tarreau9667a802013-12-09 12:52:13 +01001405 /* Only the first stick store-request of each table is applied
1406 * and other ones are ignored. The purpose is to allow complex
1407 * configurations which look for multiple entries by decreasing
1408 * order of precision and to stop at the first which matches.
1409 * An example could be a store of the IP address from an HTTP
1410 * header first, then from the source if not found.
1411 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001412 for (i = 0; i < s->store_count; i++) {
1413 if (rule->table.t == s->store[i].table)
1414 break;
1415 }
1416
1417 if (i != s->store_count)
1418 continue;
1419
1420 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001421 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001422 ret = acl_pass(ret);
1423 if (rule->cond->pol == ACL_COND_UNLESS)
1424 ret = !ret;
1425 }
1426
1427 if (ret) {
1428 struct stktable_key *key;
1429
Willy Tarreau192252e2015-04-04 01:47:55 +02001430 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 +01001431 if (!key)
1432 continue;
1433
1434 if (rule->flags & STK_IS_MATCH) {
1435 struct stksess *ts;
1436
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001437 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001438 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001439 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001440 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001441
1442 /* srv found in table */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001443 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001444 ptr = __stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001445 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001446 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun1d33b292010-01-04 15:47:17 +01001447 if (node) {
1448 struct server *srv;
1449
1450 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001451 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001452 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001453 (s->flags & SF_FORCE_PRST)) {
1454 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001455 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001456 }
1457 }
1458 }
Emeric Brun819fc6f2017-06-13 19:37:32 +02001459 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001460 }
1461 }
1462 if (rule->flags & STK_IS_STORE) {
1463 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1464 struct stksess *ts;
1465
1466 ts = stksess_new(rule->table.t, key);
1467 if (ts) {
1468 s->store[s->store_count].table = rule->table.t;
1469 s->store[s->store_count++].ts = ts;
1470 }
1471 }
1472 }
1473 }
1474 }
1475
1476 req->analysers &= ~an_bit;
1477 req->analyse_exp = TICK_ETERNITY;
1478 return 1;
1479}
1480
1481/* This stream analyser works on a response. It applies all store rules on it
1482 * then returns 1. The data must already be present in the buffer otherwise
1483 * they won't match. It always returns 1.
1484 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001485static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001486{
1487 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001488 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001489 struct sticking_rule *rule;
1490 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001491 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001492
Christopher Faulet45073512018-07-20 10:16:29 +02001493 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001494 now_ms, __FUNCTION__,
1495 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001496 rep,
1497 rep->rex, rep->wex,
1498 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001499 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001500 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001501
1502 list_for_each_entry(rule, &px->storersp_rules, list) {
1503 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001504
Willy Tarreau9667a802013-12-09 12:52:13 +01001505 /* Only the first stick store-response of each table is applied
1506 * and other ones are ignored. The purpose is to allow complex
1507 * configurations which look for multiple entries by decreasing
1508 * order of precision and to stop at the first which matches.
1509 * An example could be a store of a set-cookie value, with a
1510 * fallback to a parameter found in a 302 redirect.
1511 *
1512 * The store-response rules are not allowed to override the
1513 * store-request rules for the same table, but they may coexist.
1514 * Thus we can have up to one store-request entry and one store-
1515 * response entry for the same table at any time.
1516 */
1517 for (i = nbreq; i < s->store_count; i++) {
1518 if (rule->table.t == s->store[i].table)
1519 break;
1520 }
1521
1522 /* skip existing entries for this table */
1523 if (i < s->store_count)
1524 continue;
1525
Emeric Brun1d33b292010-01-04 15:47:17 +01001526 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001527 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001528 ret = acl_pass(ret);
1529 if (rule->cond->pol == ACL_COND_UNLESS)
1530 ret = !ret;
1531 }
1532
1533 if (ret) {
1534 struct stktable_key *key;
1535
Willy Tarreau192252e2015-04-04 01:47:55 +02001536 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 +01001537 if (!key)
1538 continue;
1539
Willy Tarreau37e340c2013-12-06 23:05:21 +01001540 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001541 struct stksess *ts;
1542
1543 ts = stksess_new(rule->table.t, key);
1544 if (ts) {
1545 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001546 s->store[s->store_count++].ts = ts;
1547 }
1548 }
1549 }
1550 }
1551
1552 /* process store request and store response */
1553 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001554 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001555 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001556
Willy Tarreauc93cd162014-05-13 15:54:22 +02001557 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001558 stksess_free(s->store[i].table, s->store[i].ts);
1559 s->store[i].ts = NULL;
1560 continue;
1561 }
1562
Emeric Brun819fc6f2017-06-13 19:37:32 +02001563 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1564 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001565 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001566 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001567 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001568 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001569
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001570 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001571 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
1572 stktable_data_cast(ptr, server_id) = __objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001573 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001574 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001575 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001576 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001577
1578 rep->analysers &= ~an_bit;
1579 rep->analyse_exp = TICK_ETERNITY;
1580 return 1;
1581}
1582
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001583/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001584 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001585 */
1586#define UPDATE_ANALYSERS(real, list, back, flag) { \
1587 list = (((list) & ~(flag)) | ~(back)) & (real); \
1588 back = real; \
1589 if (!(list)) \
1590 break; \
1591 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1592 continue; \
1593}
1594
Christopher Fauleta9215b72016-05-11 17:06:28 +02001595/* These 2 following macros call an analayzer for the specified channel if the
1596 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001597 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001598 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001599 * AN_REQ/RES_HTTP_XFER_BODY) */
1600#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1601 { \
1602 if ((list) & (flag)) { \
1603 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001604 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001605 break; \
1606 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1607 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001608 if (!flt_post_analyze((strm), (chn), (flag))) \
1609 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001610 } \
1611 else { \
1612 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1613 break; \
1614 } \
1615 UPDATE_ANALYSERS((chn)->analysers, (list), \
1616 (back), (flag)); \
1617 } \
1618 }
1619
1620#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1621 { \
1622 if ((list) & (flag)) { \
1623 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1624 break; \
1625 UPDATE_ANALYSERS((chn)->analysers, (list), \
1626 (back), (flag)); \
1627 } \
1628 }
1629
Willy Tarreau87b09662015-04-03 00:22:06 +02001630/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001631 * then puts it back to the wait queue in a clean state, or cleans up its
1632 * resources if it must be deleted. Returns in <next> the date the task wants
1633 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1634 * nothing too many times, the request and response buffers flags are monitored
1635 * and each function is called only if at least another function has changed at
1636 * least one flag it is interested in.
1637 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001638struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001639{
Willy Tarreau827aee92011-03-10 16:55:02 +01001640 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001641 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001642 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001643 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001644 unsigned int rq_prod_last, rq_cons_last;
1645 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001646 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001647 struct channel *req, *res;
1648 struct stream_interface *si_f, *si_b;
1649
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001650 activity[tid].stream++;
1651
Willy Tarreau8f128b42014-11-28 15:07:47 +01001652 req = &s->req;
1653 res = &s->res;
1654
1655 si_f = &s->si[0];
1656 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001657
Olivier Houchardc2aa7112018-09-11 18:27:21 +02001658 /* First, attempd to do I/Os */
1659 si_cs_io_cb(NULL, si_f, 0);
1660 si_cs_io_cb(NULL, si_b, 0);
1661
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001662 //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 +01001663 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001664
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001665 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001666 if (s->txn)
1667 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001668
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001669 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001670 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1671 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001672
1673 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001674 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1675 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001676
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001677 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001678 si_f->flags |= SI_FL_DONT_WAKE;
1679 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001680
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001681 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001682 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001683
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001684 /* 1a: Check for low level timeouts if needed. We just set a flag on
1685 * stream interfaces when their timeouts have expired.
1686 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001687 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001688 stream_int_check_timeouts(si_f);
1689 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001690
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001691 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001692 * for future reads or writes. Note: this will also concern upper layers
1693 * but we do not touch any other flag. We must be careful and correctly
1694 * detect state changes when calling them.
1695 */
1696
Willy Tarreau8f128b42014-11-28 15:07:47 +01001697 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001698
Willy Tarreau8f128b42014-11-28 15:07:47 +01001699 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1700 si_b->flags |= SI_FL_NOLINGER;
1701 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001702 }
1703
Willy Tarreau8f128b42014-11-28 15:07:47 +01001704 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1705 if (si_f->flags & SI_FL_NOHALF)
1706 si_f->flags |= SI_FL_NOLINGER;
1707 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001708 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001709
Willy Tarreau8f128b42014-11-28 15:07:47 +01001710 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001711
Willy Tarreau8f128b42014-11-28 15:07:47 +01001712 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1713 si_f->flags |= SI_FL_NOLINGER;
1714 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001715 }
1716
Willy Tarreau8f128b42014-11-28 15:07:47 +01001717 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1718 if (si_b->flags & SI_FL_NOHALF)
1719 si_b->flags |= SI_FL_NOLINGER;
1720 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001721 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001722
Christopher Fauleta00d8172016-11-10 14:58:05 +01001723 if (HAS_FILTERS(s))
1724 flt_stream_check_timeouts(s);
1725
Willy Tarreau798f4322012-11-08 14:49:17 +01001726 /* Once in a while we're woken up because the task expires. But
1727 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001728 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001729 * timeout needs to be refreshed.
1730 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001731 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001732 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +01001733 CF_WRITE_ACTIVITY|CF_WRITE_EVENT|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001734 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001735 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001736 si_f->flags &= ~SI_FL_DONT_WAKE;
1737 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001738 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001739 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001740 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001741
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001742 /* below we may emit error messages so we have to ensure that we have
1743 * our buffers properly allocated.
1744 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001745 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001746 /* No buffer available, we've been subscribed to the list of
1747 * buffer waiters, let's wait for our turn.
1748 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001749 si_f->flags &= ~SI_FL_DONT_WAKE;
1750 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001751 goto update_exp_and_leave;
1752 }
1753
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001754 /* 1b: check for low-level errors reported at the stream interface.
1755 * First we check if it's a retryable error (in which case we don't
1756 * want to tell the buffer). Otherwise we report the error one level
1757 * upper by setting flags into the buffers. Note that the side towards
1758 * the client cannot have connect (hence retryable) errors. Also, the
1759 * connection setup code must be able to deal with any type of abort.
1760 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001761 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001762 if (unlikely(si_f->flags & SI_FL_ERR)) {
1763 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1764 si_shutr(si_f);
1765 si_shutw(si_f);
1766 stream_int_report_error(si_f);
1767 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001768 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1769 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001770 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001771 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001772 if (!(s->flags & SF_ERR_MASK))
1773 s->flags |= SF_ERR_CLICL;
1774 if (!(s->flags & SF_FINST_MASK))
1775 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001776 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001777 }
1778 }
1779
Willy Tarreau8f128b42014-11-28 15:07:47 +01001780 if (unlikely(si_b->flags & SI_FL_ERR)) {
1781 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1782 si_shutr(si_b);
1783 si_shutw(si_b);
1784 stream_int_report_error(si_b);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001785 HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001786 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001787 HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001788 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001789 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1790 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001791 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001792 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001793 if (!(s->flags & SF_ERR_MASK))
1794 s->flags |= SF_ERR_SRVCL;
1795 if (!(s->flags & SF_FINST_MASK))
1796 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001797 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001798 }
1799 /* note: maybe we should process connection errors here ? */
1800 }
1801
Willy Tarreau8f128b42014-11-28 15:07:47 +01001802 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001803 /* we were trying to establish a connection on the server side,
1804 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1805 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001806 if (unlikely(!sess_update_st_con_tcp(s)))
1807 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001808 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001809 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001810
1811 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1812 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1813 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1814 */
1815 }
1816
Willy Tarreau8f128b42014-11-28 15:07:47 +01001817 rq_prod_last = si_f->state;
1818 rq_cons_last = si_b->state;
1819 rp_cons_last = si_f->state;
1820 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001821
1822 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001823 /* Check for connection closure */
1824
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001825 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001826 "[%u] %s:%d: task=%p s=%p, sfl=0x%08x, rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%lu rqt=%lu rph=%lu rpt=%lu cs=%d ss=%d, cet=0x%x set=0x%x retr=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001827 now_ms, __FUNCTION__, __LINE__,
1828 t,
1829 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001830 req, res,
1831 req->rex, res->wex,
1832 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001833 ci_data(req), co_data(req), ci_data(res), co_data(res), si_f->state, si_b->state,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001834 si_f->err_type, si_b->err_type,
1835 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001836
1837 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001838 if (unlikely(si_f->state == SI_ST_DIS))
1839 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001840
1841 /* When a server-side connection is released, we have to count it and
1842 * check for pending connections on this server.
1843 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001844 if (unlikely(si_b->state == SI_ST_DIS)) {
1845 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001846 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001847 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001848 if (s->flags & SF_CURR_SESS) {
1849 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +02001850 HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001851 }
1852 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001853 if (may_dequeue_tasks(srv, s->be))
1854 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001855 }
1856 }
1857
1858 /*
1859 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1860 * at this point.
1861 */
1862
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001863 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001864 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001865 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1866 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001867 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001868 si_f->state != rq_prod_last ||
1869 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001870 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001871 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001872
Willy Tarreau8f128b42014-11-28 15:07:47 +01001873 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001874 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001875 unsigned int ana_list;
1876 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001877
Willy Tarreau90deb182010-01-07 00:20:41 +01001878 /* it's up to the analysers to stop new connections,
1879 * disable reading or closing. Note: if an analyser
1880 * disables any of these bits, it is responsible for
1881 * enabling them again when it disables itself, so
1882 * that other analysers are called in similar conditions.
1883 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001884 channel_auto_read(req);
1885 channel_auto_connect(req);
1886 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001887
1888 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001889 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001890 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001891 * the list when not needed. Any analyser may return 0
1892 * to break out of the loop, either because of missing
1893 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001894 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001895 * analyser, and we may loop again if other analysers
1896 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001897 *
1898 * We build a list of analysers to run. We evaluate all
1899 * of these analysers in the order of the lower bit to
1900 * the higher bit. This ordering is very important.
1901 * An analyser will often add/remove other analysers,
1902 * including itself. Any changes to itself have no effect
1903 * on the loop. If it removes any other analysers, we
1904 * want those analysers not to be called anymore during
1905 * this loop. If it adds an analyser that is located
1906 * after itself, we want it to be scheduled for being
1907 * processed during the loop. If it adds an analyser
1908 * which is located before it, we want it to switch to
1909 * it immediately, even if it has already been called
1910 * once but removed since.
1911 *
1912 * In order to achieve this, we compare the analyser
1913 * list after the call with a copy of it before the
1914 * call. The work list is fed with analyser bits that
1915 * appeared during the call. Then we compare previous
1916 * work list with the new one, and check the bits that
1917 * appeared. If the lowest of these bits is lower than
1918 * the current bit, it means we have enabled a previous
1919 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001920 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001921
Willy Tarreau8f128b42014-11-28 15:07:47 +01001922 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001923 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001924 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001925 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001926 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1927 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1928 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1929 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1930 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001931 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001932 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1933 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1934 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1935 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1936 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1937 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1938 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001939 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001940 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001941 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1942 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001943 break;
1944 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001945 }
Willy Tarreau84455332009-03-15 22:34:05 +01001946
Willy Tarreau8f128b42014-11-28 15:07:47 +01001947 rq_prod_last = si_f->state;
1948 rq_cons_last = si_b->state;
1949 req->flags &= ~CF_WAKE_ONCE;
1950 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001951
Willy Tarreau8f128b42014-11-28 15:07:47 +01001952 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001953 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001954 }
1955
Willy Tarreau576507f2010-01-07 00:09:04 +01001956 /* we'll monitor the request analysers while parsing the response,
1957 * because some response analysers may indirectly enable new request
1958 * analysers (eg: HTTP keep-alive).
1959 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001960 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01001961
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001962 resync_response:
1963 /* Analyse response */
1964
Willy Tarreau8f128b42014-11-28 15:07:47 +01001965 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
1966 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001967 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001968 si_f->state != rp_cons_last ||
1969 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001970 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001971 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001972
Willy Tarreau8f128b42014-11-28 15:07:47 +01001973 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001974 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001975 unsigned int ana_list;
1976 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001977
Willy Tarreau90deb182010-01-07 00:20:41 +01001978 /* it's up to the analysers to stop disable reading or
1979 * closing. Note: if an analyser disables any of these
1980 * bits, it is responsible for enabling them again when
1981 * it disables itself, so that other analysers are called
1982 * in similar conditions.
1983 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001984 channel_auto_read(res);
1985 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001986
1987 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001988 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001989 * to MSB. The analysers must remove themselves from
1990 * the list when not needed. Any analyser may return 0
1991 * to break out of the loop, either because of missing
1992 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001993 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001994 * analyser, and we may loop again if other analysers
1995 * are added in the middle.
1996 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001997
Willy Tarreau8f128b42014-11-28 15:07:47 +01001998 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001999 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002000 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002001 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
2002 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002003 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
2004 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
2005 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
2006 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 +01002007 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002008 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002009 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
2010 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002011 break;
2012 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002013 }
2014
Willy Tarreau8f128b42014-11-28 15:07:47 +01002015 rp_cons_last = si_f->state;
2016 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02002017 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002018 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002019
Willy Tarreau8f128b42014-11-28 15:07:47 +01002020 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002021 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002022 }
2023
Willy Tarreau576507f2010-01-07 00:09:04 +01002024 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002025 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002026 goto resync_request;
2027
Willy Tarreau8f128b42014-11-28 15:07:47 +01002028 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002029 goto resync_request;
2030
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002031 /* FIXME: here we should call protocol handlers which rely on
2032 * both buffers.
2033 */
2034
2035
2036 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002037 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002038 * we're just in a data phase here since it means we have not
2039 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002040 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002041 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002042 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002043 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002044 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002045 req->analysers = 0;
2046 if (req->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002047 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2048 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002049 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002050 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002051 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002052 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002053 else if (req->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002054 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2055 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002056 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002057 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002058 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002059 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002060 else if (req->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002061 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2062 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002063 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002064 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002065 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002066 }
2067 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002068 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2069 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002070 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002071 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002072 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002073 }
Willy Tarreau84455332009-03-15 22:34:05 +01002074 sess_set_term_flags(s);
2075 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002076 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002077 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002078 res->analysers = 0;
2079 if (res->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002080 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2081 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002082 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002083 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002084 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002085 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002086 else if (res->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002087 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2088 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002089 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002090 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002091 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002092 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002093 else if (res->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002094 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2095 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002096 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002097 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002098 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002099 }
2100 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002101 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2102 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002103 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002104 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002105 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002106 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002107 sess_set_term_flags(s);
2108 }
Willy Tarreau84455332009-03-15 22:34:05 +01002109 }
2110
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002111 /*
2112 * Here we take care of forwarding unhandled data. This also includes
2113 * connection establishments and shutdown requests.
2114 */
2115
2116
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002117 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002118 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002119 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002120 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002121 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002122 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002123 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2124 (si_f->state >= SI_ST_EST) &&
2125 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002126 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002127 * attached to it. If any data are left in, we'll permit them to
2128 * move.
2129 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002130 channel_auto_read(req);
2131 channel_auto_connect(req);
2132 channel_auto_close(req);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002133 c_adv(req, ci_data(req));
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002134
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002135 /* We'll let data flow between the producer (if still connected)
2136 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002137 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002138 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002139 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002140
2141 /* Just in order to support fetching HTTP contents after start
2142 * of forwarding when the HTTP forwarding analyser is not used,
2143 * we simply reset msg->sov so that HTTP rewinding points to the
2144 * headers.
2145 */
2146 if (s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002147 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - co_data(req);
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002148 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002149
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002150 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002151 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2152 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002153 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002154 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2155 (objt_cs(si_b->end) && __objt_cs(si_b->end)->conn->xprt && __objt_cs(si_b->end)->conn->xprt->snd_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002156 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002157 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2158 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002159 (req->flags & CF_STREAMER_FAST)))) {
2160 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002161 }
2162
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002163 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002164 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002165
2166 /*
2167 * Now forward all shutdown requests between both sides of the buffer
2168 */
2169
Willy Tarreau520d95e2009-09-19 21:04:57 +02002170 /* first, let's check if the request buffer needs to shutdown(write), which may
2171 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002172 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2173 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002174 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002175 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002176 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002177 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002178 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002179
2180 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002181 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2182 channel_is_empty(req))) {
2183 if (req->flags & CF_READ_ERROR)
2184 si_b->flags |= SI_FL_NOLINGER;
2185 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002186 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002187
2188 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002189 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2190 !req->analysers))
2191 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002192
2193 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002194 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2195 if (si_f->flags & SI_FL_NOHALF)
2196 si_f->flags |= SI_FL_NOLINGER;
2197 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002198 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002199
Willy Tarreau520d95e2009-09-19 21:04:57 +02002200 /* it's possible that an upper layer has requested a connection setup or abort.
2201 * There are 2 situations where we decide to establish a new connection :
2202 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002203 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002204 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002205 if (si_b->state == SI_ST_INI) {
2206 if (!(req->flags & CF_SHUTW)) {
2207 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002208 /* If we have an appctx, there is no connect method, so we
2209 * immediately switch to the connected state, otherwise we
2210 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002211 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002212 si_b->state = SI_ST_REQ; /* new connection requested */
2213 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002214 }
Willy Tarreau73201222009-08-16 18:27:24 +02002215 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002216 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002217 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002218 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2219 channel_shutw_now(req); /* fix buffer flags upon abort */
2220 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002221 }
Willy Tarreau92795622009-03-06 12:51:23 +01002222 }
2223
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002224
2225 /* we may have a pending connection request, or a connection waiting
2226 * for completion.
2227 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002228 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002229
2230 /* prune the request variables and swap to the response variables. */
2231 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreau6204cd92016-03-10 16:33:04 +01002232 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002233 vars_init(&s->vars_reqres, SCOPE_RES);
2234 }
2235
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002236 do {
2237 /* nb: step 1 might switch from QUE to ASS, but we first want
2238 * to give a chance to step 2 to perform a redirect if needed.
2239 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002240 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002241 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002242 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002243 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002244
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002245 /* applets directly go to the ESTABLISHED state. Similarly,
2246 * servers experience the same fate when their connection
2247 * is reused.
2248 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002249 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002250 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002251
Willy Tarreaub44c8732013-12-31 23:16:50 +01002252 /* Now we can add the server name to a header (if requested) */
2253 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002254 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002255 (s->be->server_id_hdr_name != NULL) &&
2256 (s->be->mode == PR_MODE_HTTP) &&
2257 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002258 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002259 }
2260
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002261 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002262 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002263 http_perform_server_redirect(s, si_b);
2264 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002265 }
2266
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002267 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002268 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002269 goto resync_stream_interface;
2270
Willy Tarreau815a9b22010-07-27 17:15:12 +02002271 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002272 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002273 goto resync_request;
2274
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002275 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002276
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002277 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002278 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002279 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002280 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002281 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002282 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002283 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2284 (si_b->state >= SI_ST_EST) &&
2285 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002286 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002287 * attached to it. If any data are left in, we'll permit them to
2288 * move.
2289 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002290 channel_auto_read(res);
2291 channel_auto_close(res);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002292 c_adv(res, ci_data(res));
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002293
2294 /* We'll let data flow between the producer (if still connected)
2295 * to the consumer.
2296 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002297 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002298 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002299
Willy Tarreau42529c32015-07-09 18:38:57 +02002300 /* Just in order to support fetching HTTP contents after start
2301 * of forwarding when the HTTP forwarding analyser is not used,
2302 * we simply reset msg->sov so that HTTP rewinding points to the
2303 * headers.
2304 */
2305 if (s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002306 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - co_data(res);
Willy Tarreau42529c32015-07-09 18:38:57 +02002307
Willy Tarreauce887fd2012-05-12 12:50:00 +02002308 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002309 * tunnel timeout set, use it now. Note that we must respect
2310 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002311 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002312 if (!req->analysers && s->be->timeout.tunnel) {
2313 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002314 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002315
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002316 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2317 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002318 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2319 res->rto = s->be->timeout.serverfin;
2320 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2321 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002322 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2323 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002324
Willy Tarreau8f128b42014-11-28 15:07:47 +01002325 req->rex = tick_add(now_ms, req->rto);
2326 req->wex = tick_add(now_ms, req->wto);
2327 res->rex = tick_add(now_ms, res->rto);
2328 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002329 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002330 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002331
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002332 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002333 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2334 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002335 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002336 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2337 (objt_cs(si_b->end) && __objt_cs(si_b->end)->conn->xprt && __objt_cs(si_b->end)->conn->xprt->rcv_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002338 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002339 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2340 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002341 (res->flags & CF_STREAMER_FAST)))) {
2342 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002343 }
2344
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002345 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002346 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002347
2348 /*
2349 * Now forward all shutdown requests between both sides of the buffer
2350 */
2351
2352 /*
2353 * FIXME: this is probably where we should produce error responses.
2354 */
2355
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002356 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002357 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002358 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002359 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002360 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002361
2362 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002363 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2364 channel_is_empty(res))) {
2365 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002366 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002367
2368 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002369 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2370 !res->analysers)
2371 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002372
2373 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002374 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2375 if (si_b->flags & SI_FL_NOHALF)
2376 si_b->flags |= SI_FL_NOLINGER;
2377 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002378 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002379
Willy Tarreau8f128b42014-11-28 15:07:47 +01002380 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002381 goto resync_stream_interface;
2382
Willy Tarreau8f128b42014-11-28 15:07:47 +01002383 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002384 goto resync_request;
2385
Willy Tarreau8f128b42014-11-28 15:07:47 +01002386 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002387 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002388
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002389 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002390 si_f->flags &= ~SI_FL_DONT_WAKE;
2391 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002392
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002393 /* This is needed only when debugging is enabled, to indicate
2394 * client-side or server-side close. Please note that in the unlikely
2395 * event where both sides would close at once, the sequence is reported
2396 * on the server side first.
2397 */
2398 if (unlikely((global.mode & MODE_DEBUG) &&
2399 (!(global.mode & MODE_QUIET) ||
2400 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002401 if (si_b->state == SI_ST_CLO &&
2402 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002403 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002404 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002405 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2406 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002407 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002408 }
2409
Willy Tarreau8f128b42014-11-28 15:07:47 +01002410 if (si_f->state == SI_ST_CLO &&
2411 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002412 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002413 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002414 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2415 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002416 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002417 }
2418 }
2419
Willy Tarreau8f128b42014-11-28 15:07:47 +01002420 if (likely((si_f->state != SI_ST_CLO) ||
2421 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002422
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002423 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002424 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002425
Willy Tarreau563cc372015-04-19 18:13:56 +02002426 if (si_f->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002427 si_update(si_f);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002428
Willy Tarreau563cc372015-04-19 18:13:56 +02002429 if (si_b->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002430 si_update(si_b);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002431
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +01002432 req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED|CF_WRITE_EVENT);
2433 res->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED|CF_WRITE_EVENT);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002434 si_f->prev_state = si_f->state;
2435 si_b->prev_state = si_b->state;
2436 si_f->flags &= ~(SI_FL_ERR|SI_FL_EXP);
2437 si_b->flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002438
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002439 /* Trick: if a request is being waiting for the server to respond,
2440 * and if we know the server can timeout, we don't want the timeout
2441 * to expire on the client side first, but we're still interested
2442 * in passing data from the client to the server (eg: POST). Thus,
2443 * we can cancel the client's request timeout if the server's
2444 * request timeout is set and the server has not yet sent a response.
2445 */
2446
Willy Tarreau8f128b42014-11-28 15:07:47 +01002447 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2448 (tick_isset(req->wex) || tick_isset(res->rex))) {
2449 req->flags |= CF_READ_NOEXP;
2450 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002451 }
2452
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002453 /* Reset pending events now */
2454 s->pending_events = 0;
2455
Willy Tarreau798f4322012-11-08 14:49:17 +01002456 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002457 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002458 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2459 tick_first(tick_first(req->rex, req->wex),
2460 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002461 if (!req->analysers)
2462 req->analyse_exp = TICK_ETERNITY;
2463
2464 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2465 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2466 req->analyse_exp = tick_add(now_ms, 5000);
2467
2468 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002469
Willy Tarreau9a398be2017-11-10 17:14:23 +01002470 t->expire = tick_first(t->expire, res->analyse_exp);
2471
Willy Tarreau8f128b42014-11-28 15:07:47 +01002472 if (si_f->exp)
2473 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002474
Willy Tarreau8f128b42014-11-28 15:07:47 +01002475 if (si_b->exp)
2476 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002477
Christopher Faulet56803b12017-11-24 16:06:18 +01002478 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002479 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2480 " 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 +01002481 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2482 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002483
2484#ifdef DEBUG_DEV
2485 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002486 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002487 ABORT_NOW();
2488#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002489 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002490 stream_release_buffers(s);
Olivier Houchardc2aa7112018-09-11 18:27:21 +02002491 /* We may have free'd some space in buffers, or have more to send/recv, try again */
2492 si_cs_io_cb(NULL, si_f, 0);
2493 si_cs_io_cb(NULL, si_b, 0);
Willy Tarreau26c25062009-03-08 09:38:41 +01002494 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002495 }
2496
Willy Tarreaue7dff022015-04-03 01:14:29 +02002497 if (s->flags & SF_BE_ASSIGNED)
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002498 HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002499
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002500 if (unlikely((global.mode & MODE_DEBUG) &&
2501 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002502 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002503 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002504 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2505 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002506 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002507 }
2508
2509 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002510 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002511
Willy Tarreaueee5b512015-04-03 23:46:31 +02002512 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002513 int n;
2514
Willy Tarreaueee5b512015-04-03 23:46:31 +02002515 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002516 if (n < 1 || n > 5)
2517 n = 0;
2518
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002519 if (sess->fe->mode == PR_MODE_HTTP) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002520 HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002521 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002522 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002523 (s->be->mode == PR_MODE_HTTP)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002524 HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2525 HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002526 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002527 }
2528
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002529 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002530 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002531 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002532 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreau66425e32018-07-25 06:55:12 +02002533 /* we may need to know the position in the queue */
2534 pendconn_free(s);
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002535 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002536 }
2537
Willy Tarreau87b09662015-04-03 00:22:06 +02002538 /* update time stats for this stream */
2539 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002540
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002541 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002542 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002543 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002544 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002545 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002546}
2547
Willy Tarreau87b09662015-04-03 00:22:06 +02002548/* Update the stream's backend and server time stats */
2549void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002550{
2551 int t_request;
2552 int t_queue;
2553 int t_connect;
2554 int t_data;
2555 int t_close;
2556 struct server *srv;
2557
2558 t_request = 0;
2559 t_queue = s->logs.t_queue;
2560 t_connect = s->logs.t_connect;
2561 t_close = s->logs.t_close;
2562 t_data = s->logs.t_data;
2563
2564 if (s->be->mode != PR_MODE_HTTP)
2565 t_data = t_connect;
2566
2567 if (t_connect < 0 || t_data < 0)
2568 return;
2569
2570 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2571 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2572
2573 t_data -= t_connect;
2574 t_connect -= t_queue;
2575 t_queue -= t_request;
2576
2577 srv = objt_server(s->target);
2578 if (srv) {
2579 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2580 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2581 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2582 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2583 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002584 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002585 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2586 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2587 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2588 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002589 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002590}
2591
Willy Tarreau7c669d72008-06-20 15:04:11 +02002592/*
2593 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002594 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002595 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002596 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002597 * server.
2598 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002599void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002600{
2601 if (sess->srv_conn == newsrv)
2602 return;
2603
2604 if (sess->srv_conn) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002605 HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002606 HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002607 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2608 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002609 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002610 }
2611
2612 if (newsrv) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002613 HA_ATOMIC_ADD(&newsrv->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002614 HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002615 if (newsrv->proxy->lbprm.server_take_conn)
2616 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002617 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002618 }
2619}
2620
Willy Tarreau84455332009-03-15 22:34:05 +01002621/* Handle server-side errors for default protocols. It is called whenever a a
2622 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002623 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002624 * them. It's installed as ->srv_error for the server-side stream_interface.
2625 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002626void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002627{
2628 int err_type = si->err_type;
2629 int err = 0, fin = 0;
2630
2631 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002632 err = SF_ERR_CLICL;
2633 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002634 }
2635 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002636 err = SF_ERR_CLICL;
2637 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002638 }
2639 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002640 err = SF_ERR_SRVTO;
2641 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002642 }
2643 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002644 err = SF_ERR_SRVCL;
2645 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002646 }
2647 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002648 err = SF_ERR_SRVTO;
2649 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002650 }
2651 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002652 err = SF_ERR_SRVCL;
2653 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002654 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002655 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002656 err = SF_ERR_RESOURCE;
2657 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002658 }
Willy Tarreau84455332009-03-15 22:34:05 +01002659 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002660 err = SF_ERR_INTERNAL;
2661 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002662 }
2663
Willy Tarreaue7dff022015-04-03 01:14:29 +02002664 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002665 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002666 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002667 s->flags |= fin;
2668}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002669
Willy Tarreaue7dff022015-04-03 01:14:29 +02002670/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002671void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002672{
Willy Tarreau87b09662015-04-03 00:22:06 +02002673 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002674 return;
2675
Willy Tarreau87b09662015-04-03 00:22:06 +02002676 channel_shutw_now(&stream->req);
2677 channel_shutr_now(&stream->res);
2678 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002679 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002680 stream->flags |= why;
2681 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002682}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002683
Willy Tarreau8b22a712010-06-18 17:46:06 +02002684/************************************************************************/
2685/* All supported ACL keywords must be declared here. */
2686/************************************************************************/
2687
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002688/* 0=OK, <0=Alert, >0=Warning */
2689static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2690 struct proxy *px, struct act_rule *rule,
2691 char **err)
2692{
2693 struct action_kw *kw;
2694
2695 /* Check if the service name exists. */
2696 if (*(args[*cur_arg]) == 0) {
2697 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002698 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002699 }
2700
2701 /* lookup for keyword corresponding to a service. */
2702 kw = action_lookup(&service_keywords, args[*cur_arg]);
2703 if (!kw) {
2704 memprintf(err, "'%s' unknown service name.", args[1]);
2705 return ACT_RET_PRS_ERR;
2706 }
2707 (*cur_arg)++;
2708
2709 /* executes specific rule parser. */
2710 rule->kw = kw;
2711 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2712 return ACT_RET_PRS_ERR;
2713
2714 /* Register processing function. */
2715 rule->action_ptr = process_use_service;
2716 rule->action = ACT_CUSTOM;
2717
2718 return ACT_RET_PRS_OK;
2719}
2720
2721void service_keywords_register(struct action_kw_list *kw_list)
2722{
2723 LIST_ADDQ(&service_keywords, &kw_list->list);
2724}
2725
William Lallemand4c5b4d52016-11-21 08:51:11 +01002726
2727/* This function dumps a complete stream state onto the stream interface's
2728 * read buffer. The stream has to be set in strm. It returns 0 if the output
2729 * buffer is full and it needs to be called again, otherwise non-zero. It is
2730 * designed to be called from stats_dump_strm_to_buffer() below.
2731 */
2732static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2733{
2734 struct appctx *appctx = __objt_appctx(si->end);
2735 struct tm tm;
2736 extern const char *monthname[12];
2737 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002738 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01002739 struct connection *conn;
2740 struct appctx *tmpctx;
2741
2742 chunk_reset(&trash);
2743
2744 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2745 /* stream changed, no need to go any further */
2746 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002747 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01002748 si_applet_cant_put(si);
2749 return 0;
2750 }
2751 appctx->ctx.sess.uid = 0;
2752 appctx->ctx.sess.section = 0;
2753 return 1;
2754 }
2755
2756 switch (appctx->ctx.sess.section) {
2757 case 0: /* main status of the stream */
2758 appctx->ctx.sess.uid = strm->uniq_id;
2759 appctx->ctx.sess.section = 1;
2760 /* fall through */
2761
2762 case 1:
2763 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2764 chunk_appendf(&trash,
2765 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2766 strm,
2767 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2768 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2769 strm->uniq_id,
2770 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2771
2772 conn = objt_conn(strm_orig(strm));
2773 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2774 case AF_INET:
2775 case AF_INET6:
2776 chunk_appendf(&trash, " source=%s:%d\n",
2777 pn, get_host_port(&conn->addr.from));
2778 break;
2779 case AF_UNIX:
2780 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2781 break;
2782 default:
2783 /* no more information to print right now */
2784 chunk_appendf(&trash, "\n");
2785 break;
2786 }
2787
2788 chunk_appendf(&trash,
2789 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2790 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2791
2792 chunk_appendf(&trash,
2793 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2794 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2795 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2796 strm_li(strm) ? strm_li(strm)->luid : 0);
2797
2798 if (conn)
2799 conn_get_to_addr(conn);
2800
2801 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2802 case AF_INET:
2803 case AF_INET6:
2804 chunk_appendf(&trash, " addr=%s:%d\n",
2805 pn, get_host_port(&conn->addr.to));
2806 break;
2807 case AF_UNIX:
2808 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2809 break;
2810 default:
2811 /* no more information to print right now */
2812 chunk_appendf(&trash, "\n");
2813 break;
2814 }
2815
2816 if (strm->be->cap & PR_CAP_BE)
2817 chunk_appendf(&trash,
2818 " backend=%s (id=%u mode=%s)",
2819 strm->be->id,
2820 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2821 else
2822 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2823
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002824 cs = objt_cs(strm->si[1].end);
2825 conn = cs_conn(cs);
2826
William Lallemand4c5b4d52016-11-21 08:51:11 +01002827 if (conn)
2828 conn_get_from_addr(conn);
2829
2830 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2831 case AF_INET:
2832 case AF_INET6:
2833 chunk_appendf(&trash, " addr=%s:%d\n",
2834 pn, get_host_port(&conn->addr.from));
2835 break;
2836 case AF_UNIX:
2837 chunk_appendf(&trash, " addr=unix\n");
2838 break;
2839 default:
2840 /* no more information to print right now */
2841 chunk_appendf(&trash, "\n");
2842 break;
2843 }
2844
2845 if (strm->be->cap & PR_CAP_BE)
2846 chunk_appendf(&trash,
2847 " server=%s (id=%u)",
2848 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2849 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2850 else
2851 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2852
2853 if (conn)
2854 conn_get_to_addr(conn);
2855
2856 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2857 case AF_INET:
2858 case AF_INET6:
2859 chunk_appendf(&trash, " addr=%s:%d\n",
2860 pn, get_host_port(&conn->addr.to));
2861 break;
2862 case AF_UNIX:
2863 chunk_appendf(&trash, " addr=unix\n");
2864 break;
2865 default:
2866 /* no more information to print right now */
2867 chunk_appendf(&trash, "\n");
2868 break;
2869 }
2870
2871 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002872 " task=%p (state=0x%02x nice=%d calls=%d exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002873 strm->task,
2874 strm->task->state,
2875 strm->task->nice, strm->task->calls,
2876 strm->task->expire ?
2877 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2878 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2879 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01002880 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01002881 task_in_rq(strm->task) ? ", running" : "");
2882
2883 chunk_appendf(&trash,
2884 " age=%s)\n",
2885 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2886
2887 if (strm->txn)
2888 chunk_appendf(&trash,
2889 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2890 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02002891 h1_msg_state_str(strm->txn->req.msg_state), h1_msg_state_str(strm->txn->rsp.msg_state), !LIST_ISEMPTY(&strm->buffer_wait.list));
William Lallemand4c5b4d52016-11-21 08:51:11 +01002892
2893 chunk_appendf(&trash,
2894 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2895 &strm->si[0],
2896 si_state_str(strm->si[0].state),
2897 strm->si[0].flags,
2898 obj_type_name(strm->si[0].end),
2899 obj_base_ptr(strm->si[0].end),
2900 strm->si[0].exp ?
2901 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2902 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2903 TICKS_TO_MS(1000)) : "<NEVER>",
2904 strm->si[0].err_type);
2905
2906 chunk_appendf(&trash,
2907 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2908 &strm->si[1],
2909 si_state_str(strm->si[1].state),
2910 strm->si[1].flags,
2911 obj_type_name(strm->si[1].end),
2912 obj_base_ptr(strm->si[1].end),
2913 strm->si[1].exp ?
2914 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2915 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2916 TICKS_TO_MS(1000)) : "<NEVER>",
2917 strm->si[1].err_type);
2918
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002919 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
2920 conn = cs->conn;
2921
William Lallemand4c5b4d52016-11-21 08:51:11 +01002922 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002923 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002924 conn,
2925 conn_get_ctrl_name(conn),
2926 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002927 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002928 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002929 obj_type_name(conn->target),
2930 obj_base_ptr(conn->target));
2931
2932 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002933 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d fd.tmask=0x%lx\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002934 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002935 conn->handle.fd,
2936 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002937 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002938 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002939 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002940 }
2941 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2942 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002943 " app0=%p st0=%d st1=%d st2=%d applet=%s tmask=0x%lx nice=%d calls=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002944 tmpctx,
2945 tmpctx->st0,
2946 tmpctx->st1,
2947 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002948 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002949 tmpctx->thread_mask,
2950 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002951 }
2952
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002953 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
2954 conn = cs->conn;
2955
William Lallemand4c5b4d52016-11-21 08:51:11 +01002956 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002957 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002958 conn,
2959 conn_get_ctrl_name(conn),
2960 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002961 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002962 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002963 obj_type_name(conn->target),
2964 obj_base_ptr(conn->target));
2965
2966 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002967 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d fd.tmask=0x%lx\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002968 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002969 conn->handle.fd,
2970 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002971 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002972 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002973 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002974 }
2975 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
2976 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002977 " app1=%p st0=%d st1=%d st2=%d applet=%s tmask=0x%lx, nice=%d, calls=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002978 tmpctx,
2979 tmpctx->st0,
2980 tmpctx->st1,
2981 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002982 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002983 tmpctx->thread_mask,
2984 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002985 }
2986
2987 chunk_appendf(&trash,
2988 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2989 " an_exp=%s",
2990 &strm->req,
2991 strm->req.flags, strm->req.analysers,
2992 strm->req.pipe ? strm->req.pipe->data : 0,
2993 strm->req.to_forward, strm->req.total,
2994 strm->req.analyse_exp ?
2995 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
2996 TICKS_TO_MS(1000)) : "<NEVER>");
2997
2998 chunk_appendf(&trash,
2999 " rex=%s",
3000 strm->req.rex ?
3001 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
3002 TICKS_TO_MS(1000)) : "<NEVER>");
3003
3004 chunk_appendf(&trash,
3005 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003006 " buf=%p data=%p o=%u p=%u req.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003007 strm->req.wex ?
3008 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
3009 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003010 &strm->req.buf,
3011 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003012 (unsigned int)ci_head_ofs(&strm->req),
Willy Tarreau591d4452018-06-15 17:21:00 +02003013 strm->txn ? strm->txn->req.next : 0, (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003014 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003015
3016 chunk_appendf(&trash,
3017 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3018 " an_exp=%s",
3019 &strm->res,
3020 strm->res.flags, strm->res.analysers,
3021 strm->res.pipe ? strm->res.pipe->data : 0,
3022 strm->res.to_forward, strm->res.total,
3023 strm->res.analyse_exp ?
3024 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
3025 TICKS_TO_MS(1000)) : "<NEVER>");
3026
3027 chunk_appendf(&trash,
3028 " rex=%s",
3029 strm->res.rex ?
3030 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3031 TICKS_TO_MS(1000)) : "<NEVER>");
3032
3033 chunk_appendf(&trash,
3034 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003035 " buf=%p data=%p o=%u p=%u rsp.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003036 strm->res.wex ?
3037 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3038 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003039 &strm->res.buf,
3040 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003041 (unsigned int)ci_head_ofs(&strm->res),
Willy Tarreau591d4452018-06-15 17:21:00 +02003042 strm->txn ? strm->txn->rsp.next : 0, (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003043 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003044
Willy Tarreau06d80a92017-10-19 14:32:15 +02003045 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003046 si_applet_cant_put(si);
3047 return 0;
3048 }
3049
3050 /* use other states to dump the contents */
3051 }
3052 /* end of dump */
3053 appctx->ctx.sess.uid = 0;
3054 appctx->ctx.sess.section = 0;
3055 return 1;
3056}
3057
3058
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003059static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003060{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003061 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3062 return 1;
3063
3064 if (*args[2] && strcmp(args[2], "all") == 0)
3065 appctx->ctx.sess.target = (void *)-1;
3066 else if (*args[2])
3067 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3068 else
3069 appctx->ctx.sess.target = NULL;
3070 appctx->ctx.sess.section = 0; /* start with stream status */
3071 appctx->ctx.sess.pos = 0;
3072
3073 return 0;
3074}
3075
3076/* This function dumps all streams' states onto the stream interface's
3077 * read buffer. It returns 0 if the output buffer is full and it needs
3078 * to be called again, otherwise non-zero. It is designed to be called
3079 * from stats_dump_sess_to_buffer() below.
3080 */
3081static int cli_io_handler_dump_sess(struct appctx *appctx)
3082{
3083 struct stream_interface *si = appctx->owner;
3084 struct connection *conn;
3085
3086 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3087 /* If we're forced to shut down, we might have to remove our
3088 * reference to the last stream being dumped.
3089 */
3090 if (appctx->st2 == STAT_ST_LIST) {
3091 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3092 LIST_DEL(&appctx->ctx.sess.bref.users);
3093 LIST_INIT(&appctx->ctx.sess.bref.users);
3094 }
3095 }
3096 return 1;
3097 }
3098
3099 chunk_reset(&trash);
3100
3101 switch (appctx->st2) {
3102 case STAT_ST_INIT:
3103 /* the function had not been called yet, let's prepare the
3104 * buffer for a response. We initialize the current stream
3105 * pointer to the first in the global list. When a target
3106 * stream is being destroyed, it is responsible for updating
3107 * this pointer. We know we have reached the end when this
3108 * pointer points back to the head of the streams list.
3109 */
3110 LIST_INIT(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003111 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003112 appctx->ctx.sess.bref.ref = streams.n;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003113 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003114 appctx->st2 = STAT_ST_LIST;
3115 /* fall through */
3116
3117 case STAT_ST_LIST:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003118 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003119 /* first, let's detach the back-ref from a possible previous stream */
3120 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3121 LIST_DEL(&appctx->ctx.sess.bref.users);
3122 LIST_INIT(&appctx->ctx.sess.bref.users);
3123 }
3124
3125 /* and start from where we stopped */
3126 while (appctx->ctx.sess.bref.ref != &streams) {
3127 char pn[INET6_ADDRSTRLEN];
3128 struct stream *curr_strm;
3129
3130 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3131
3132 if (appctx->ctx.sess.target) {
3133 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3134 goto next_sess;
3135
3136 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3137 /* call the proper dump() function and return if we're missing space */
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003138 if (!stats_dump_full_strm_to_buffer(si, curr_strm)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003139 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003140 return 0;
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003141 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003142
3143 /* stream dump complete */
3144 LIST_DEL(&appctx->ctx.sess.bref.users);
3145 LIST_INIT(&appctx->ctx.sess.bref.users);
3146 if (appctx->ctx.sess.target != (void *)-1) {
3147 appctx->ctx.sess.target = NULL;
3148 break;
3149 }
3150 else
3151 goto next_sess;
3152 }
3153
3154 chunk_appendf(&trash,
3155 "%p: proto=%s",
3156 curr_strm,
3157 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3158
3159 conn = objt_conn(strm_orig(curr_strm));
3160 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3161 case AF_INET:
3162 case AF_INET6:
3163 chunk_appendf(&trash,
3164 " src=%s:%d fe=%s be=%s srv=%s",
3165 pn,
3166 get_host_port(&conn->addr.from),
3167 strm_fe(curr_strm)->id,
3168 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3169 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3170 );
3171 break;
3172 case AF_UNIX:
3173 chunk_appendf(&trash,
3174 " src=unix:%d fe=%s be=%s srv=%s",
3175 strm_li(curr_strm)->luid,
3176 strm_fe(curr_strm)->id,
3177 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3178 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3179 );
3180 break;
3181 }
3182
3183 chunk_appendf(&trash,
3184 " ts=%02x age=%s calls=%d",
3185 curr_strm->task->state,
3186 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3187 curr_strm->task->calls);
3188
3189 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003190 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003191 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003192 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003193 curr_strm->req.analysers,
3194 curr_strm->req.rex ?
3195 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3196 TICKS_TO_MS(1000)) : "");
3197
3198 chunk_appendf(&trash,
3199 ",wx=%s",
3200 curr_strm->req.wex ?
3201 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3202 TICKS_TO_MS(1000)) : "");
3203
3204 chunk_appendf(&trash,
3205 ",ax=%s]",
3206 curr_strm->req.analyse_exp ?
3207 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3208 TICKS_TO_MS(1000)) : "");
3209
3210 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003211 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003212 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003213 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003214 curr_strm->res.analysers,
3215 curr_strm->res.rex ?
3216 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3217 TICKS_TO_MS(1000)) : "");
3218
3219 chunk_appendf(&trash,
3220 ",wx=%s",
3221 curr_strm->res.wex ?
3222 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3223 TICKS_TO_MS(1000)) : "");
3224
3225 chunk_appendf(&trash,
3226 ",ax=%s]",
3227 curr_strm->res.analyse_exp ?
3228 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3229 TICKS_TO_MS(1000)) : "");
3230
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003231 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003232 chunk_appendf(&trash,
3233 " s0=[%d,%1xh,fd=%d,ex=%s]",
3234 curr_strm->si[0].state,
3235 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003236 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003237 curr_strm->si[0].exp ?
3238 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3239 TICKS_TO_MS(1000)) : "");
3240
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003241 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003242 chunk_appendf(&trash,
3243 " s1=[%d,%1xh,fd=%d,ex=%s]",
3244 curr_strm->si[1].state,
3245 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003246 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003247 curr_strm->si[1].exp ?
3248 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3249 TICKS_TO_MS(1000)) : "");
3250
3251 chunk_appendf(&trash,
3252 " exp=%s",
3253 curr_strm->task->expire ?
3254 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3255 TICKS_TO_MS(1000)) : "");
3256 if (task_in_rq(curr_strm->task))
3257 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3258
3259 chunk_appendf(&trash, "\n");
3260
Willy Tarreau06d80a92017-10-19 14:32:15 +02003261 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003262 /* let's try again later from this stream. We add ourselves into
3263 * this stream's users so that it can remove us upon termination.
3264 */
3265 si_applet_cant_put(si);
3266 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003267 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003268 return 0;
3269 }
3270
3271 next_sess:
3272 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3273 }
3274
3275 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3276 /* specified stream not found */
3277 if (appctx->ctx.sess.section > 0)
3278 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3279 else
3280 chunk_appendf(&trash, "Session not found.\n");
3281
Willy Tarreau06d80a92017-10-19 14:32:15 +02003282 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003283 si_applet_cant_put(si);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003284 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003285 return 0;
3286 }
3287
3288 appctx->ctx.sess.target = NULL;
3289 appctx->ctx.sess.uid = 0;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003290 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003291 return 1;
3292 }
3293
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003294 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003295 /* fall through */
3296
3297 default:
3298 appctx->st2 = STAT_ST_FIN;
3299 return 1;
3300 }
3301}
3302
3303static void cli_release_show_sess(struct appctx *appctx)
3304{
3305 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003306 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003307 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3308 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003309 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003310 }
3311}
3312
Willy Tarreau61b65212016-11-24 11:09:25 +01003313/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003314static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003315{
3316 struct stream *strm, *ptr;
3317
3318 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3319 return 1;
3320
3321 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003322 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003323 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003324 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003325 return 1;
3326 }
3327
3328 ptr = (void *)strtoul(args[2], NULL, 0);
3329
3330 /* first, look for the requested stream in the stream table */
3331 list_for_each_entry(strm, &streams, list) {
3332 if (strm == ptr)
3333 break;
3334 }
3335
3336 /* do we have the stream ? */
3337 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003338 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003339 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003340 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003341 return 1;
3342 }
3343
3344 stream_shutdown(strm, SF_ERR_KILLED);
3345 return 1;
3346}
3347
Willy Tarreau4e46b622016-11-23 16:50:48 +01003348/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003349static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003350{
3351 struct server *sv;
3352 struct stream *strm, *strm_bck;
3353
3354 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3355 return 1;
3356
3357 sv = cli_find_server(appctx, args[3]);
3358 if (!sv)
3359 return 1;
3360
3361 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003362 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003363 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3364 if (strm->srv_conn == sv)
3365 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003366 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003367 return 1;
3368}
3369
William Lallemand4c5b4d52016-11-21 08:51:11 +01003370/* register cli keywords */
3371static struct cli_kw_list cli_kws = {{ },{
3372 { { "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 +01003373 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003374 { { "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 +01003375 {{},}
3376}};
3377
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003378/* main configuration keyword registration. */
3379static struct action_kw_list stream_tcp_keywords = { ILH, {
3380 { "use-service", stream_parse_use_service },
3381 { /* END */ }
3382}};
3383
3384static struct action_kw_list stream_http_keywords = { ILH, {
3385 { "use-service", stream_parse_use_service },
3386 { /* END */ }
3387}};
3388
Willy Tarreau8b22a712010-06-18 17:46:06 +02003389__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003390static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003391{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003392 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3393 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003394 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003395}
3396
Willy Tarreaubaaee002006-06-26 02:48:02 +02003397/*
3398 * Local variables:
3399 * c-indent-level: 8
3400 * c-basic-offset: 8
3401 * End:
3402 */