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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 */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200117 /* This function is called just after the handshake, so the handshake duration is
118 * between the accept time and now.
119 */
120 s->logs.t_handshake = tv_ms_elapsed(&sess->tv_accept, &now);
121 s->logs.t_idle = -1;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200122 tv_zero(&s->logs.tv_request);
123 s->logs.t_queue = -1;
124 s->logs.t_connect = -1;
125 s->logs.t_data = -1;
126 s->logs.t_close = 0;
127 s->logs.bytes_in = s->logs.bytes_out = 0;
128 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
129 s->logs.srv_queue_size = 0; /* we will get this number soon */
130
131 /* default logging function */
132 s->do_log = strm_log;
133
134 /* default error reporting function, may be changed by analysers */
135 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200136
137 /* Initialise the current rule list pointer to NULL. We are sure that
138 * any rulelist match the NULL pointer.
139 */
140 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200141 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200142
Willy Tarreaua68f7622015-09-21 17:48:24 +0200143 /* Copy SC counters for the stream. We don't touch refcounts because
144 * any reference we have is inherited from the session. Since the stream
145 * doesn't exist without the session, the session's existence guarantees
146 * we don't lose the entry. During the store operation, the stream won't
147 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200148 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200149 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200150
151 s->sess = sess;
152 s->si[0].flags = SI_FL_NONE;
153 s->si[1].flags = SI_FL_ISBACK;
154
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200155 s->uniq_id = global.req_count++;
156
Willy Tarreau87b09662015-04-03 00:22:06 +0200157 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200158 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100159
160 LIST_INIT(&s->buffer_wait.list);
161 s->buffer_wait.target = s;
162 s->buffer_wait.wakeup_cb = (int (*)(void *))stream_res_wakeup;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200163
Willy Tarreaue7dff022015-04-03 01:14:29 +0200164 s->flags |= SF_INITIALIZED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200165 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200166
Emeric Brunc60def82017-09-27 14:59:38 +0200167 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200168 goto out_fail_alloc;
169
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200170 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100171 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200172 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200173 t->context = s;
174 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200175 if (sess->listener)
176 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200177
Willy Tarreau87b09662015-04-03 00:22:06 +0200178 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200179 * This changes later when switching rules are executed or
180 * when the default backend is assigned.
181 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200182 s->be = sess->fe;
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200183 s->req.buf = BUF_NULL;
184 s->res.buf = BUF_NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200185 s->req_cap = NULL;
186 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200187
Willy Tarreauebcd4842015-06-19 11:59:02 +0200188 /* Initialise all the variables contexts even if not used.
189 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200190 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200191 vars_init(&s->vars_txn, SCOPE_TXN);
192 vars_init(&s->vars_reqres, SCOPE_REQ);
193
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200194 /* this part should be common with other protocols */
Willy Tarreau819d3322014-11-28 12:12:34 +0100195 si_reset(&s->si[0]);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200196 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100197 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200198
Willy Tarreau984fca92017-12-20 16:31:43 +0100199 if (cs && cs->conn->mux && cs->conn->mux->flags & MX_FL_CLEAN_ABRT)
200 s->si[0].flags |= SI_FL_CLEAN_ABRT;
201
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200202 /* attach the incoming connection to the stream interface now. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200203 if (cs)
204 si_attach_cs(&s->si[0], cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200205 else if (appctx)
206 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200207
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200208 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200209 s->si[0].flags |= SI_FL_INDEP_STR;
210
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200211 /* pre-initialize the other side's stream interface to an INIT state. The
212 * callbacks will be initialized before attempting to connect.
213 */
Willy Tarreau819d3322014-11-28 12:12:34 +0100214 si_reset(&s->si[1]);
Hongbo Longe39683c2017-03-10 18:41:51 +0100215 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200216
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200217 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200218 s->si[1].flags |= SI_FL_INDEP_STR;
219
Willy Tarreau87b09662015-04-03 00:22:06 +0200220 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100221 s->target = sess->listener ? sess->listener->default_target : NULL;
222
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200223 s->pend_pos = NULL;
224
225 /* init store persistence */
226 s->store_count = 0;
227
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100228 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100229 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100230 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaue223e3b2017-11-18 15:39:10 +0100231
232 if (!sess->fe->fe_req_ana) {
233 channel_auto_connect(&s->req); /* don't wait to establish connection */
234 channel_auto_close(&s->req); /* let the producer forward close requests */
235 }
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200236
237 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100238 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100239 s->req.rex = TICK_ETERNITY;
240 s->req.wex = TICK_ETERNITY;
241 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200242
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100243 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100244 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100245 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200246
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200247 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100248 s->req.flags |= CF_NEVER_WAIT;
249 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200250 }
251
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200252 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100253 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100254 s->res.rex = TICK_ETERNITY;
255 s->res.wex = TICK_ETERNITY;
256 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200257
Willy Tarreaueee5b512015-04-03 23:46:31 +0200258 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100259 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100260
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100261 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200262 LIST_ADDQ(&streams, &s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100263 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200264
Christopher Faulet92d36382015-11-05 13:35:03 +0100265 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200266 goto out_fail_accept;
267
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200268 /* finish initialization of the accepted file descriptor */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200269 if (cs)
270 cs_want_recv(cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200271 else if (appctx)
Willy Tarreaufe127932015-04-21 19:23:39 +0200272 si_applet_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200273
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200274 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200275 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200276
277 /* it is important not to call the wakeup function directly but to
278 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200279 * priorities to tasks. Using multi thread we must be sure that
280 * stream is fully initialized before calling task_wakeup. So
281 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200282 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200283 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200284
285 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200286 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100287 flt_stream_release(s, 0);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200288 task_free(t);
289 out_fail_alloc:
Willy Tarreau3b246412014-11-25 17:10:33 +0100290 LIST_DEL(&s->list);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100291 pool_free(pool_head_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200292 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200293}
294
Willy Tarreaubaaee002006-06-26 02:48:02 +0200295/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200296 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200297 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200298static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200299{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200300 struct session *sess = strm_sess(s);
301 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100302 struct bref *bref, *back;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200303 struct conn_stream *cli_cs = objt_cs(s->si[0].end);
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100304 int must_free_sess;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200305 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100306
Willy Tarreaubaaee002006-06-26 02:48:02 +0200307 if (s->pend_pos)
308 pendconn_free(s->pend_pos);
Willy Tarreau922a8062008-12-04 09:33:58 +0100309
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100310 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200311 if (s->flags & SF_CURR_SESS) {
312 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200313 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau1e62de62008-11-11 20:20:02 +0100314 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100315 if (may_dequeue_tasks(objt_server(s->target), s->be))
316 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100317 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100318
Willy Tarreau7c669d72008-06-20 15:04:11 +0200319 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200320 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200321 * it should normally be only the same as the one above,
322 * so this should not happen in fact.
323 */
324 sess_change_server(s, NULL);
325 }
326
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100327 if (s->req.pipe)
328 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100329
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100330 if (s->res.pipe)
331 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100332
Willy Tarreaubf883e02014-11-25 21:10:35 +0100333 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100334 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100335 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100336 LIST_DEL(&s->buffer_wait.list);
337 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100338 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100339 }
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200340 if (s->req.buf.size || s->res.buf.size) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100341 b_drop(&s->req.buf);
342 b_drop(&s->res.buf);
Olivier Houchard673867c2018-05-25 16:58:52 +0200343 offer_buffers(NULL, tasks_run_queue);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100344 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200345
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100346 hlua_ctx_destroy(s->hlua);
347 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200348 if (s->txn)
349 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100350
Willy Tarreau1e954912012-10-12 17:50:05 +0200351 /* ensure the client-side transport layer is destroyed */
Willy Tarreau32560732017-10-08 11:33:44 +0200352 if (cli_cs)
353 cs_close(cli_cs);
Willy Tarreau1e954912012-10-12 17:50:05 +0200354
Willy Tarreaua4cda672010-06-06 18:28:49 +0200355 for (i = 0; i < s->store_count; i++) {
356 if (!s->store[i].ts)
357 continue;
358 stksess_free(s->store[i].table, s->store[i].ts);
359 s->store[i].ts = NULL;
360 }
361
Willy Tarreaueee5b512015-04-03 23:46:31 +0200362 if (s->txn) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100363 pool_free(pool_head_hdr_idx, s->txn->hdr_idx.v);
364 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200365 s->txn = NULL;
366 }
367
Christopher Fauletd7c91962015-04-30 11:48:27 +0200368 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100369 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200370
Willy Tarreau92fb9832007-10-16 17:34:28 +0200371 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100372 pool_free(fe->rsp_cap_pool, s->res_cap);
373 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200374 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100375
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200376 /* Cleanup all variable contexts. */
Willy Tarreau6204cd92016-03-10 16:33:04 +0100377 vars_prune(&s->vars_txn, s->sess, s);
378 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200379
Willy Tarreau87b09662015-04-03 00:22:06 +0200380 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200381
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100382 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100383 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100384 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200385 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100386 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100387 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100388 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200389 if (s->list.n != &streams)
390 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100391 bref->ref = s->list.n;
392 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100393 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100394 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200395
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100396 /* applets do not release session yet */
397 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
398
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200399 si_release_endpoint(&s->si[1]);
400 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200401
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100402 if (must_free_sess)
403 session_free(sess);
404
Willy Tarreaubafbe012017-11-24 17:34:44 +0100405 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200406
407 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200408 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100409 pool_flush(pool_head_buffer);
410 pool_flush(pool_head_http_txn);
411 pool_flush(pool_head_hdr_idx);
412 pool_flush(pool_head_requri);
413 pool_flush(pool_head_capture);
414 pool_flush(pool_head_stream);
415 pool_flush(pool_head_session);
416 pool_flush(pool_head_connection);
417 pool_flush(pool_head_pendconn);
418 pool_flush(fe->req_cap_pool);
419 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200420 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200421}
422
Willy Tarreau656859d2014-11-25 19:46:36 +0100423
Willy Tarreau87b09662015-04-03 00:22:06 +0200424/* Allocates a work buffer for stream <s>. It is meant to be called inside
425 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200426 * to work fine, which is the response buffer so that an error message may be
427 * built and returned. Response buffers may be allocated from the reserve, this
428 * is critical to ensure that a response may always flow and will never block a
429 * server from releasing a connection. Returns 0 in case of failure, non-zero
430 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100431 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100432static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100433{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100434 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100435 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100436 LIST_DEL(&s->buffer_wait.list);
437 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100438 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100439 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100440
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200441 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100442 return 1;
443
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100444 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100445 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100446 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100447 return 0;
448}
449
450/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100451 * update() functions. It will try to wake up as many tasks/applets as the
452 * number of buffers that it releases. In practice, most often streams are
453 * blocked on a single buffer, so it makes sense to try to wake two up when two
454 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100455 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200456void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100457{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100458 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100459
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200460 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100461 offer = 1;
462 b_free(&s->req.buf);
463 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200464 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100465 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100466 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100467 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100468
Willy Tarreaubf883e02014-11-25 21:10:35 +0100469 /* if we're certain to have at least 1 buffer available, and there is
470 * someone waiting, we can wake up a waiter and offer them.
471 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100472 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200473 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100474}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200475
476/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200477int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200478{
Willy Tarreau87b09662015-04-03 00:22:06 +0200479 LIST_INIT(&streams);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100480 HA_SPIN_INIT(&streams_lock);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100481 pool_head_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
482 return pool_head_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200483}
484
Willy Tarreau87b09662015-04-03 00:22:06 +0200485void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100486{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200487 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100488 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200489 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200490 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100491 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100492
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100493 bytes = s->req.total - s->logs.bytes_in;
494 s->logs.bytes_in = s->req.total;
495 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200496 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
497 HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100498
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100499 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200500 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200501
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200502 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200503 HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200504
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100505 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200506 struct stkctr *stkctr = &s->stkctr[i];
507
Emeric Brun819fc6f2017-06-13 19:37:32 +0200508 ts = stkctr_entry(stkctr);
509 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200510 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200511 ts = stkctr_entry(stkctr);
512 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200513 continue;
514 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200515
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100516 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200517 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200518 if (ptr1)
519 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200520
Emeric Brun819fc6f2017-06-13 19:37:32 +0200521 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200522 if (ptr2)
523 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200524 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100525 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200526
527 /* If data was modified, we need to touch to re-schedule sync */
528 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200529 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100530 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100531 }
532
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100533 bytes = s->res.total - s->logs.bytes_out;
534 s->logs.bytes_out = s->res.total;
535 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200536 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
537 HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100538
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100539 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200540 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200541
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200542 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200543 HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200544
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100545 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200546 struct stkctr *stkctr = &s->stkctr[i];
547
Emeric Brun819fc6f2017-06-13 19:37:32 +0200548 ts = stkctr_entry(stkctr);
549 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200550 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200551 ts = stkctr_entry(stkctr);
552 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200553 continue;
554 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200555
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100556 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200557 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200558 if (ptr1)
559 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200560
Emeric Brun819fc6f2017-06-13 19:37:32 +0200561 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200562 if (ptr2)
563 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200564 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100565 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200566
567 /* If data was modified, we need to touch to re-schedule sync */
568 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200569 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100570 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100571 }
572}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200573
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100574/* This function is called with (si->state == SI_ST_CON) meaning that a
575 * connection was attempted and that the file descriptor is already allocated.
576 * We must check for establishment, error and abort. Possible output states
577 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
578 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200579 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100580 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200581static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100582{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100583 struct stream_interface *si = &s->si[1];
584 struct channel *req = &s->req;
585 struct channel *rep = &s->res;
Willy Tarreaua553ae92017-10-05 18:52:17 +0200586 struct conn_stream *srv_cs = __objt_cs(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100587
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100588 /* If we got an error, or if nothing happened and the connection timed
589 * out, we must give up. The CER state handler will take care of retry
590 * attempts and error reports.
591 */
592 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800593 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100594 /* Some data were sent past the connection establishment,
595 * so we need to pretend we're established to log correctly
596 * and let later states handle the failure.
597 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100598 si->state = SI_ST_EST;
599 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100600 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100601 return 1;
602 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100603 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100604 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100605
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200606 /* XXX cognet: do we really want to kill the connection here ?
607 * Probably not for multiple streams.
608 */
Willy Tarreaua553ae92017-10-05 18:52:17 +0200609 cs_close(srv_cs);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100610
611 if (si->err_type)
612 return 0;
613
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100614 if (si->flags & SI_FL_ERR)
615 si->err_type = SI_ET_CONN_ERR;
616 else
617 si->err_type = SI_ET_CONN_TO;
618 return 0;
619 }
620
621 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800622 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100623 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200624 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +0100625 ((!(req->flags & (CF_WRITE_ACTIVITY|CF_WRITE_EVENT)) && channel_is_empty(req)) ||
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100626 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100627 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200628 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100629 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100630 if (s->srv_error)
631 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100632 return 1;
633 }
634
635 /* we need to wait a bit more if there was no activity either */
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +0100636 if (!(req->flags & (CF_WRITE_ACTIVITY|CF_WRITE_EVENT)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100637 return 1;
638
639 /* OK, this means that a connection succeeded. The caller will be
640 * responsible for handling the transition from CON to EST.
641 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100642 si->state = SI_ST_EST;
643 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100644 return 1;
645}
646
647/* This function is called with (si->state == SI_ST_CER) meaning that a
648 * previous connection attempt has failed and that the file descriptor
649 * has already been released. Possible causes include asynchronous error
650 * notification and time out. Possible output states are SI_ST_CLO when
651 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
652 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
653 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
654 * marked as in error state. It returns 0.
655 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200656static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100657{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100658 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200659 struct conn_stream *cs = objt_cs(si->end);
660 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100661
Willy Tarreau87b09662015-04-03 00:22:06 +0200662 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100663 if (objt_server(s->target)) {
664 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100665
Willy Tarreaue7dff022015-04-03 01:14:29 +0200666 if (s->flags & SF_CURR_SESS) {
667 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200668 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100669 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200670
671 if ((si->flags & SI_FL_ERR) &&
672 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
673 /* We tried to connect to a server which is configured
674 * with "verify required" and which doesn't have the
675 * "verifyhost" directive. The server presented a wrong
676 * certificate (a certificate for an unexpected name),
677 * which implies that we have used SNI in the handshake,
678 * and that the server doesn't have the associated cert
679 * and presented a default one.
680 *
681 * This is a serious enough issue not to retry. It's
682 * especially important because this wrong name might
683 * either be the result of a configuration error, and
684 * retrying will only hammer the server, or is caused
685 * by the use of a wrong SNI value, most likely
686 * provided by the client and we don't want to let the
687 * client provoke retries.
688 */
689 si->conn_retries = 0;
690 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100691 }
692
693 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200694 si->conn_retries--;
695 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100696 if (!si->err_type) {
697 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100698 }
699
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100700 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200701 HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200702 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100703 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100704 if (may_dequeue_tasks(objt_server(s->target), s->be))
705 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100706
707 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200708 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100709 s->req.flags |= CF_WRITE_ERROR;
710 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100711
712 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100713 if (s->srv_error)
714 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100715 return 0;
716 }
717
718 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700719 * retry on another server. By default this redispatch occurs on the
720 * last retry, but if configured we allow redispatches to occur on
721 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200722 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100723 * bit to ignore any persistence cookie. We won't count a retry nor a
724 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200725 * If the connection is not persistent, the balancing algorithm is not
726 * determinist (round robin) and there is more than one active server,
727 * we accept to perform an immediate redispatch without waiting since
728 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100729 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200730 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700731 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200732 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100733 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700734 ((s->be->conn_retries - si->conn_retries) %
735 s->be->redispatch_after == 0)) ||
736 ((s->be->redispatch_after < 0) &&
737 ((s->be->conn_retries - si->conn_retries) %
738 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200739 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700740 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100741 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100742 if (may_dequeue_tasks(objt_server(s->target), s->be))
743 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100744
Willy Tarreaue7dff022015-04-03 01:14:29 +0200745 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100746 si->state = SI_ST_REQ;
747 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100748 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200749 HA_ATOMIC_ADD(&objt_server(s->target)->counters.retries, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200750 HA_ATOMIC_ADD(&s->be->be_counters.retries, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100751 si->state = SI_ST_ASS;
752 }
753
754 if (si->flags & SI_FL_ERR) {
755 /* The error was an asynchronous connection error, and we will
756 * likely have to retry connecting to the same server, most
757 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200758 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100759 */
760
Willy Tarreaub0290662014-06-13 17:04:44 +0200761 int delay = 1000;
762
763 if (s->be->timeout.connect && s->be->timeout.connect < delay)
764 delay = s->be->timeout.connect;
765
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100766 if (!si->err_type)
767 si->err_type = SI_ET_CONN_ERR;
768
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200769 /* only wait when we're retrying on the same server */
770 if (si->state == SI_ST_ASS ||
771 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
772 (s->be->srv_act <= 1)) {
773 si->state = SI_ST_TAR;
774 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
775 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100776 return 0;
777 }
778 return 0;
779}
780
781/*
782 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200783 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200784 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100785 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200786static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100787{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100788 struct stream_interface *si = &s->si[1];
789 struct channel *req = &s->req;
790 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100791
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100792 /* First, centralize the timers information */
793 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
794 si->exp = TICK_ETERNITY;
795
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100796 if (objt_server(s->target))
797 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100798
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100799 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100800 /* if the user wants to log as soon as possible, without counting
801 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200802 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100803 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100804 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100805 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100806 }
807 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100808 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100809 }
810
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100811 if (!(s->flags & SF_TUNNEL)) {
812 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100813
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100814 /* Be sure to filter response headers if the backend is an HTTP proxy
815 * and if there are filters attached to the stream. */
816 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
817 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
818 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100819
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200820 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200821 if (req->flags & CF_WAKE_CONNECT) {
822 req->flags |= CF_WAKE_ONCE;
823 req->flags &= ~CF_WAKE_CONNECT;
824 }
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200825 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200826 /* real connections have timeouts */
827 req->wto = s->be->timeout.server;
828 rep->rto = s->be->timeout.server;
829 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100830 req->wex = TICK_ETERNITY;
831}
832
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700833/* Check if the connection request is in such a state that it can be aborted. */
834static int check_req_may_abort(struct channel *req, struct stream *s)
835{
836 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100837 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100838 (channel_is_empty(req) ||
839 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700840}
841
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100842/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
843 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100844 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
845 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
846 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100847 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200848static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100849{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100850 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100851 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100852 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100853
Christopher Faulet45073512018-07-20 10:16:29 +0200854 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 +0100855 now_ms, __FUNCTION__,
856 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400857 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100858 req->rex, s->res.wex,
859 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200860 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 +0100861
862 if (si->state == SI_ST_ASS) {
863 /* Server assigned to connection request, we have to try to connect now */
864 int conn_err;
865
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700866 /* Before we try to initiate the connection, see if the
867 * request may be aborted instead.
868 */
869 if (check_req_may_abort(req, s)) {
870 si->err_type |= SI_ET_CONN_ABRT;
871 goto abort_connection;
872 }
873
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100874 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100875 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100876
Willy Tarreaue7dff022015-04-03 01:14:29 +0200877 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100878 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100879 if (srv)
880 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500881 if (srv)
882 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100883 return;
884 }
885
886 /* We have received a synchronous error. We might have to
887 * abort, retry immediately or redispatch.
888 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200889 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100890 if (!si->err_type) {
891 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100892 }
893
Willy Tarreau827aee92011-03-10 16:55:02 +0100894 if (srv)
895 srv_inc_sess_ctr(srv);
896 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500897 srv_set_sess_last(srv);
898 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200899 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200900 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100901
Willy Tarreau87b09662015-04-03 00:22:06 +0200902 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100903 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100904 if (may_dequeue_tasks(srv, s->be))
905 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100906
907 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200908 si_shutr(si);
909 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100910 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100911
912 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
913
Willy Tarreau87b09662015-04-03 00:22:06 +0200914 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100915 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100916 if (s->srv_error)
917 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100918 return;
919 }
920
921 /* We are facing a retryable error, but we don't want to run a
922 * turn-around now, as the problem is likely a source port
923 * allocation problem, so we want to retry now.
924 */
925 si->state = SI_ST_CER;
926 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100927 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100928 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
929 return;
930 }
931 else if (si->state == SI_ST_QUE) {
932 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +0100933 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100934 /* The connection is not in the queue anymore. Either
935 * we have a server connection slot available and we
936 * go directly to the assigned state, or we need to
937 * load-balance first and go to the INI state.
938 */
939 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200940 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100941 si->state = SI_ST_REQ;
942 else {
943 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
944 si->state = SI_ST_ASS;
945 }
946 return;
947 }
948
949 /* Connection request still in queue... */
950 if (si->flags & SI_FL_EXP) {
951 /* ... and timeout expired */
952 si->exp = TICK_ETERNITY;
953 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau827aee92011-03-10 16:55:02 +0100954 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200955 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200956 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +0200957 si_shutr(si);
958 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100959 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100960 if (!si->err_type)
961 si->err_type = SI_ET_QUEUE_TO;
962 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100963 if (s->srv_error)
964 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100965 return;
966 }
967
968 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700969 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100970 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100971 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700972 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100973 }
974
975 /* Nothing changed */
976 return;
977 }
978 else if (si->state == SI_ST_TAR) {
979 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700980 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100981 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700982 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100983 }
984
985 if (!(si->flags & SI_FL_EXP))
986 return; /* still in turn-around */
987
988 si->exp = TICK_ETERNITY;
989
Willy Tarreau87b09662015-04-03 00:22:06 +0200990 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100991 * marked "assigned".
992 * FIXME: Should we force a redispatch attempt when the server is down ?
993 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200994 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100995 si->state = SI_ST_ASS;
996 else
997 si->state = SI_ST_REQ;
998 return;
999 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001000 return;
1001
1002abort_connection:
1003 /* give up */
1004 si->exp = TICK_ETERNITY;
1005 si_shutr(si);
1006 si_shutw(si);
1007 si->state = SI_ST_CLO;
1008 if (s->srv_error)
1009 s->srv_error(s, si);
1010 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001011}
1012
Willy Tarreau87b09662015-04-03 00:22:06 +02001013/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001014 * also counts a failed request if the server state has not reached the request
1015 * stage.
1016 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001017static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001018{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001019 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +09001020 if (s->si[1].state < SI_ST_REQ) {
1021
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001022 HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001023 if (strm_li(s) && strm_li(s)->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +02001024 HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001025
Willy Tarreaue7dff022015-04-03 01:14:29 +02001026 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001027 }
1028 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001029 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +09001030 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001031 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001032 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001033 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001034 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001035 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001036 }
1037}
1038
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001039/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001040 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1041 * a real connection to a server, indicating that a server has been assigned,
1042 * or SI_ST_EST for a successful connection to an applet. It may also return
1043 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001044 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001045static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001046{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001047 struct stream_interface *si = &s->si[1];
1048
Christopher Faulet45073512018-07-20 10:16:29 +02001049 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 +01001050 now_ms, __FUNCTION__,
1051 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001052 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001053 s->req.rex, s->res.wex,
1054 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001055 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 +01001056
1057 if (si->state != SI_ST_REQ)
1058 return;
1059
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001060 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1061 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001062 struct appctx *appctx = objt_appctx(si->end);
1063
1064 if (!appctx || appctx->applet != __objt_applet(s->target))
1065 appctx = stream_int_register_handler(si, objt_applet(s->target));
1066
1067 if (!appctx) {
1068 /* No more memory, let's immediately abort. Force the
1069 * error code to ignore the ERR_LOCAL which is not a
1070 * real error.
1071 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001072 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001073
1074 si_shutr(si);
1075 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001076 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001077 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001078 si->state = SI_ST_CLO;
1079 if (s->srv_error)
1080 s->srv_error(s, si);
1081 return;
1082 }
1083
Willy Tarreauee8269e2017-11-23 17:34:29 +01001084 if (tv_iszero(&s->logs.tv_request))
1085 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001086 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001087 si->state = SI_ST_EST;
1088 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001089 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001090 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001091 return;
1092 }
1093
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001094 /* Try to assign a server */
1095 if (srv_redispatch_connect(s) != 0) {
1096 /* We did not get a server. Either we queued the
1097 * connection request, or we encountered an error.
1098 */
1099 if (si->state == SI_ST_QUE)
1100 return;
1101
1102 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001103 si_shutr(si);
1104 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001105 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001106 if (!si->err_type)
1107 si->err_type = SI_ET_CONN_OTHER;
1108 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001109 if (s->srv_error)
1110 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001111 return;
1112 }
1113
1114 /* The server is assigned */
1115 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1116 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001117 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001118}
1119
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001120/* This function parses the use-service action ruleset. It executes
1121 * the associated ACL and set an applet as a stream or txn final node.
1122 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1123 * consistent state. It returns ACT_RET_STOP in succes case because
1124 * use-service must be a terminal action. Returns ACT_RET_YIELD
1125 * if the initialisation function require more data.
1126 */
1127enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1128 struct session *sess, struct stream *s, int flags)
1129
1130{
1131 struct appctx *appctx;
1132
1133 /* Initialises the applet if it is required. */
1134 if (flags & ACT_FLAG_FIRST) {
1135 /* Register applet. this function schedules the applet. */
1136 s->target = &rule->applet.obj_type;
1137 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1138 return ACT_RET_ERR;
1139
1140 /* Initialise the context. */
1141 appctx = si_appctx(&s->si[1]);
1142 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1143 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001144
1145 /* enable the minimally required analyzers in case of HTTP
1146 * keep-alive to properly handle keep-alive and compression
1147 * on the HTTP response.
1148 */
1149 if (rule->from == ACT_F_HTTP_REQ) {
1150 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1151 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1152 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001153 }
1154 else
1155 appctx = si_appctx(&s->si[1]);
1156
1157 /* Stops the applet sheduling, in case of the init function miss
1158 * some data.
1159 */
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001160 si_applet_stop_get(&s->si[1]);
1161
1162 /* Call initialisation. */
1163 if (rule->applet.init)
1164 switch (rule->applet.init(appctx, px, s)) {
1165 case 0: return ACT_RET_ERR;
1166 case 1: break;
1167 default: return ACT_RET_YIELD;
1168 }
1169
1170 /* Now we can schedule the applet. */
1171 si_applet_cant_get(&s->si[1]);
1172 appctx_wakeup(appctx);
1173
1174 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001175 HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001176
1177 /* The flag SF_ASSIGNED prevent from server assignment. */
1178 s->flags |= SF_ASSIGNED;
1179
1180 return ACT_RET_STOP;
1181}
1182
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001183/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001184 * if appropriate. The default_backend rule is also considered, then the
1185 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001186 * It returns 1 if the processing can continue on next analysers, or zero if it
1187 * either needs more data or wants to immediately abort the request.
1188 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001189static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001190{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001191 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001192 struct session *sess = s->sess;
1193 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001194
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001195 req->analysers &= ~an_bit;
1196 req->analyse_exp = TICK_ETERNITY;
1197
Christopher Faulet45073512018-07-20 10:16:29 +02001198 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 +02001199 now_ms, __FUNCTION__,
1200 s,
1201 req,
1202 req->rex, req->wex,
1203 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001204 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001205 req->analysers);
1206
1207 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001208 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001209 struct switching_rule *rule;
1210
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001211 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001212 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001213
Willy Tarreauf51658d2014-04-23 01:21:56 +02001214 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001215 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001216 ret = acl_pass(ret);
1217 if (rule->cond->pol == ACL_COND_UNLESS)
1218 ret = !ret;
1219 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001220
1221 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001222 /* If the backend name is dynamic, try to resolve the name.
1223 * If we can't resolve the name, or if any error occurs, break
1224 * the loop and fallback to the default backend.
1225 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001226 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001227
1228 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001229 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001230
1231 tmp = alloc_trash_chunk();
1232 if (!tmp)
1233 goto sw_failed;
1234
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001235 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1236 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001237
1238 free_trash_chunk(tmp);
1239 tmp = NULL;
1240
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001241 if (!backend)
1242 break;
1243 }
1244 else
1245 backend = rule->be.backend;
1246
Willy Tarreau87b09662015-04-03 00:22:06 +02001247 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001248 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001249 break;
1250 }
1251 }
1252
1253 /* To ensure correct connection accounting on the backend, we
1254 * have to assign one if it was not set (eg: a listen). This
1255 * measure also takes care of correctly setting the default
1256 * backend if any.
1257 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001258 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001259 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001260 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001261 }
1262
Willy Tarreaufb356202010-08-03 14:02:05 +02001263 /* 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 +02001264 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001265 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1266 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001267 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001268 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001269
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001270 /* 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 +02001271 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001272 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001273 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001274 int ret = 1;
1275
1276 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001277 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 +01001278 ret = acl_pass(ret);
1279 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1280 ret = !ret;
1281 }
1282
1283 if (ret) {
1284 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001285 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001286 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001287 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001288 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001289 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001290 break;
1291 }
1292 }
1293
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001294 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001295
1296 sw_failed:
1297 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001298 channel_abort(&s->req);
1299 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001300
Willy Tarreaue7dff022015-04-03 01:14:29 +02001301 if (!(s->flags & SF_ERR_MASK))
1302 s->flags |= SF_ERR_RESOURCE;
1303 if (!(s->flags & SF_FINST_MASK))
1304 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001305
Willy Tarreaueee5b512015-04-03 23:46:31 +02001306 if (s->txn)
1307 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001308 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001309 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001310 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001311}
1312
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001313/* This stream analyser works on a request. It applies all use-server rules on
1314 * it then returns 1. The data must already be present in the buffer otherwise
1315 * they won't match. It always returns 1.
1316 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001317static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001318{
1319 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001320 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001321 struct server_rule *rule;
1322
Christopher Faulet45073512018-07-20 10:16:29 +02001323 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 +02001324 now_ms, __FUNCTION__,
1325 s,
1326 req,
1327 req->rex, req->wex,
1328 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001329 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001330 req->analysers);
1331
Willy Tarreaue7dff022015-04-03 01:14:29 +02001332 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001333 list_for_each_entry(rule, &px->server_rules, list) {
1334 int ret;
1335
Willy Tarreau192252e2015-04-04 01:47:55 +02001336 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001337 ret = acl_pass(ret);
1338 if (rule->cond->pol == ACL_COND_UNLESS)
1339 ret = !ret;
1340
1341 if (ret) {
1342 struct server *srv = rule->srv.ptr;
1343
Emeric Brun52a91d32017-08-31 14:41:55 +02001344 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001345 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001346 (s->flags & SF_FORCE_PRST)) {
1347 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001348 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001349 break;
1350 }
1351 /* if the server is not UP, let's go on with next rules
1352 * just in case another one is suited.
1353 */
1354 }
1355 }
1356 }
1357
1358 req->analysers &= ~an_bit;
1359 req->analyse_exp = TICK_ETERNITY;
1360 return 1;
1361}
1362
Emeric Brun1d33b292010-01-04 15:47:17 +01001363/* This stream analyser works on a request. It applies all sticking rules on
1364 * it then returns 1. The data must already be present in the buffer otherwise
1365 * they won't match. It always returns 1.
1366 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001367static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001368{
1369 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001370 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001371 struct sticking_rule *rule;
1372
Christopher Faulet45073512018-07-20 10:16:29 +02001373 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 +01001374 now_ms, __FUNCTION__,
1375 s,
1376 req,
1377 req->rex, req->wex,
1378 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001379 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001380 req->analysers);
1381
1382 list_for_each_entry(rule, &px->sticking_rules, list) {
1383 int ret = 1 ;
1384 int i;
1385
Willy Tarreau9667a802013-12-09 12:52:13 +01001386 /* Only the first stick store-request of each table is applied
1387 * and other ones are ignored. The purpose is to allow complex
1388 * configurations which look for multiple entries by decreasing
1389 * order of precision and to stop at the first which matches.
1390 * An example could be a store of the IP address from an HTTP
1391 * header first, then from the source if not found.
1392 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001393 for (i = 0; i < s->store_count; i++) {
1394 if (rule->table.t == s->store[i].table)
1395 break;
1396 }
1397
1398 if (i != s->store_count)
1399 continue;
1400
1401 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001402 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001403 ret = acl_pass(ret);
1404 if (rule->cond->pol == ACL_COND_UNLESS)
1405 ret = !ret;
1406 }
1407
1408 if (ret) {
1409 struct stktable_key *key;
1410
Willy Tarreau192252e2015-04-04 01:47:55 +02001411 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 +01001412 if (!key)
1413 continue;
1414
1415 if (rule->flags & STK_IS_MATCH) {
1416 struct stksess *ts;
1417
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001418 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001419 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001420 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001421 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001422
1423 /* srv found in table */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001424 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001425 ptr = stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
1426 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001427 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun1d33b292010-01-04 15:47:17 +01001428 if (node) {
1429 struct server *srv;
1430
1431 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001432 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001433 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001434 (s->flags & SF_FORCE_PRST)) {
1435 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001436 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001437 }
1438 }
1439 }
Emeric Brun819fc6f2017-06-13 19:37:32 +02001440 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001441 }
1442 }
1443 if (rule->flags & STK_IS_STORE) {
1444 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1445 struct stksess *ts;
1446
1447 ts = stksess_new(rule->table.t, key);
1448 if (ts) {
1449 s->store[s->store_count].table = rule->table.t;
1450 s->store[s->store_count++].ts = ts;
1451 }
1452 }
1453 }
1454 }
1455 }
1456
1457 req->analysers &= ~an_bit;
1458 req->analyse_exp = TICK_ETERNITY;
1459 return 1;
1460}
1461
1462/* This stream analyser works on a response. It applies all store rules on it
1463 * then returns 1. The data must already be present in the buffer otherwise
1464 * they won't match. It always returns 1.
1465 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001466static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001467{
1468 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001469 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001470 struct sticking_rule *rule;
1471 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001472 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001473
Christopher Faulet45073512018-07-20 10:16:29 +02001474 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 +01001475 now_ms, __FUNCTION__,
1476 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001477 rep,
1478 rep->rex, rep->wex,
1479 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001480 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001481 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001482
1483 list_for_each_entry(rule, &px->storersp_rules, list) {
1484 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001485
Willy Tarreau9667a802013-12-09 12:52:13 +01001486 /* Only the first stick store-response of each table is applied
1487 * and other ones are ignored. The purpose is to allow complex
1488 * configurations which look for multiple entries by decreasing
1489 * order of precision and to stop at the first which matches.
1490 * An example could be a store of a set-cookie value, with a
1491 * fallback to a parameter found in a 302 redirect.
1492 *
1493 * The store-response rules are not allowed to override the
1494 * store-request rules for the same table, but they may coexist.
1495 * Thus we can have up to one store-request entry and one store-
1496 * response entry for the same table at any time.
1497 */
1498 for (i = nbreq; i < s->store_count; i++) {
1499 if (rule->table.t == s->store[i].table)
1500 break;
1501 }
1502
1503 /* skip existing entries for this table */
1504 if (i < s->store_count)
1505 continue;
1506
Emeric Brun1d33b292010-01-04 15:47:17 +01001507 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001508 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001509 ret = acl_pass(ret);
1510 if (rule->cond->pol == ACL_COND_UNLESS)
1511 ret = !ret;
1512 }
1513
1514 if (ret) {
1515 struct stktable_key *key;
1516
Willy Tarreau192252e2015-04-04 01:47:55 +02001517 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 +01001518 if (!key)
1519 continue;
1520
Willy Tarreau37e340c2013-12-06 23:05:21 +01001521 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001522 struct stksess *ts;
1523
1524 ts = stksess_new(rule->table.t, key);
1525 if (ts) {
1526 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001527 s->store[s->store_count++].ts = ts;
1528 }
1529 }
1530 }
1531 }
1532
1533 /* process store request and store response */
1534 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001535 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001536 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001537
Willy Tarreauc93cd162014-05-13 15:54:22 +02001538 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001539 stksess_free(s->store[i].table, s->store[i].ts);
1540 s->store[i].ts = NULL;
1541 continue;
1542 }
1543
Emeric Brun819fc6f2017-06-13 19:37:32 +02001544 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1545 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001546 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001547 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001548 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001549 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001550
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001551 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001552 ptr = stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001553 stktable_data_cast(ptr, server_id) = objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001554 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001555 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001556 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001557 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001558
1559 rep->analysers &= ~an_bit;
1560 rep->analyse_exp = TICK_ETERNITY;
1561 return 1;
1562}
1563
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001564/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001565 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001566 */
1567#define UPDATE_ANALYSERS(real, list, back, flag) { \
1568 list = (((list) & ~(flag)) | ~(back)) & (real); \
1569 back = real; \
1570 if (!(list)) \
1571 break; \
1572 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1573 continue; \
1574}
1575
Christopher Fauleta9215b72016-05-11 17:06:28 +02001576/* These 2 following macros call an analayzer for the specified channel if the
1577 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001578 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001579 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001580 * AN_REQ/RES_HTTP_XFER_BODY) */
1581#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1582 { \
1583 if ((list) & (flag)) { \
1584 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001585 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001586 break; \
1587 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1588 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001589 if (!flt_post_analyze((strm), (chn), (flag))) \
1590 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001591 } \
1592 else { \
1593 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1594 break; \
1595 } \
1596 UPDATE_ANALYSERS((chn)->analysers, (list), \
1597 (back), (flag)); \
1598 } \
1599 }
1600
1601#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1602 { \
1603 if ((list) & (flag)) { \
1604 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1605 break; \
1606 UPDATE_ANALYSERS((chn)->analysers, (list), \
1607 (back), (flag)); \
1608 } \
1609 }
1610
Willy Tarreau87b09662015-04-03 00:22:06 +02001611/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001612 * then puts it back to the wait queue in a clean state, or cleans up its
1613 * resources if it must be deleted. Returns in <next> the date the task wants
1614 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1615 * nothing too many times, the request and response buffers flags are monitored
1616 * and each function is called only if at least another function has changed at
1617 * least one flag it is interested in.
1618 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001619struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001620{
Willy Tarreau827aee92011-03-10 16:55:02 +01001621 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001622 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001623 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001624 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001625 unsigned int rq_prod_last, rq_cons_last;
1626 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001627 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001628 struct channel *req, *res;
1629 struct stream_interface *si_f, *si_b;
1630
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001631 activity[tid].stream++;
1632
Willy Tarreau8f128b42014-11-28 15:07:47 +01001633 req = &s->req;
1634 res = &s->res;
1635
1636 si_f = &s->si[0];
1637 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001638
1639 //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 +01001640 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001641
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001642 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001643 if (s->txn)
1644 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001645
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001646 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001647 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1648 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001649
1650 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001651 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1652 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001653
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001654 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001655 si_f->flags |= SI_FL_DONT_WAKE;
1656 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001657
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001658 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001659 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001660
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001661 /* 1a: Check for low level timeouts if needed. We just set a flag on
1662 * stream interfaces when their timeouts have expired.
1663 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001664 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001665 stream_int_check_timeouts(si_f);
1666 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001667
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001668 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001669 * for future reads or writes. Note: this will also concern upper layers
1670 * but we do not touch any other flag. We must be careful and correctly
1671 * detect state changes when calling them.
1672 */
1673
Willy Tarreau8f128b42014-11-28 15:07:47 +01001674 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001675
Willy Tarreau8f128b42014-11-28 15:07:47 +01001676 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1677 si_b->flags |= SI_FL_NOLINGER;
1678 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001679 }
1680
Willy Tarreau8f128b42014-11-28 15:07:47 +01001681 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1682 if (si_f->flags & SI_FL_NOHALF)
1683 si_f->flags |= SI_FL_NOLINGER;
1684 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001685 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001686
Willy Tarreau8f128b42014-11-28 15:07:47 +01001687 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001688
Willy Tarreau8f128b42014-11-28 15:07:47 +01001689 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1690 si_f->flags |= SI_FL_NOLINGER;
1691 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001692 }
1693
Willy Tarreau8f128b42014-11-28 15:07:47 +01001694 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1695 if (si_b->flags & SI_FL_NOHALF)
1696 si_b->flags |= SI_FL_NOLINGER;
1697 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001698 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001699
Christopher Fauleta00d8172016-11-10 14:58:05 +01001700 if (HAS_FILTERS(s))
1701 flt_stream_check_timeouts(s);
1702
Willy Tarreau798f4322012-11-08 14:49:17 +01001703 /* Once in a while we're woken up because the task expires. But
1704 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001705 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001706 * timeout needs to be refreshed.
1707 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001708 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001709 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +01001710 CF_WRITE_ACTIVITY|CF_WRITE_EVENT|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001711 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001712 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001713 si_f->flags &= ~SI_FL_DONT_WAKE;
1714 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001715 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001716 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001717 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001718
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001719 /* below we may emit error messages so we have to ensure that we have
1720 * our buffers properly allocated.
1721 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001722 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001723 /* No buffer available, we've been subscribed to the list of
1724 * buffer waiters, let's wait for our turn.
1725 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001726 si_f->flags &= ~SI_FL_DONT_WAKE;
1727 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001728 goto update_exp_and_leave;
1729 }
1730
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001731 /* 1b: check for low-level errors reported at the stream interface.
1732 * First we check if it's a retryable error (in which case we don't
1733 * want to tell the buffer). Otherwise we report the error one level
1734 * upper by setting flags into the buffers. Note that the side towards
1735 * the client cannot have connect (hence retryable) errors. Also, the
1736 * connection setup code must be able to deal with any type of abort.
1737 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001738 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001739 if (unlikely(si_f->flags & SI_FL_ERR)) {
1740 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1741 si_shutr(si_f);
1742 si_shutw(si_f);
1743 stream_int_report_error(si_f);
1744 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001745 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1746 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001747 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001748 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001749 if (!(s->flags & SF_ERR_MASK))
1750 s->flags |= SF_ERR_CLICL;
1751 if (!(s->flags & SF_FINST_MASK))
1752 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001753 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001754 }
1755 }
1756
Willy Tarreau8f128b42014-11-28 15:07:47 +01001757 if (unlikely(si_b->flags & SI_FL_ERR)) {
1758 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1759 si_shutr(si_b);
1760 si_shutw(si_b);
1761 stream_int_report_error(si_b);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001762 HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001763 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001764 HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001765 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001766 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1767 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001768 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001769 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001770 if (!(s->flags & SF_ERR_MASK))
1771 s->flags |= SF_ERR_SRVCL;
1772 if (!(s->flags & SF_FINST_MASK))
1773 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001774 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001775 }
1776 /* note: maybe we should process connection errors here ? */
1777 }
1778
Willy Tarreau8f128b42014-11-28 15:07:47 +01001779 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001780 /* we were trying to establish a connection on the server side,
1781 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1782 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001783 if (unlikely(!sess_update_st_con_tcp(s)))
1784 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001785 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001786 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001787
1788 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1789 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1790 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1791 */
1792 }
1793
Willy Tarreau8f128b42014-11-28 15:07:47 +01001794 rq_prod_last = si_f->state;
1795 rq_cons_last = si_b->state;
1796 rp_cons_last = si_f->state;
1797 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001798
1799 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001800 /* Check for connection closure */
1801
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001802 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001803 "[%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 +01001804 now_ms, __FUNCTION__, __LINE__,
1805 t,
1806 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001807 req, res,
1808 req->rex, res->wex,
1809 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001810 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 +01001811 si_f->err_type, si_b->err_type,
1812 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001813
1814 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001815 if (unlikely(si_f->state == SI_ST_DIS))
1816 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001817
1818 /* When a server-side connection is released, we have to count it and
1819 * check for pending connections on this server.
1820 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001821 if (unlikely(si_b->state == SI_ST_DIS)) {
1822 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001823 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001824 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001825 if (s->flags & SF_CURR_SESS) {
1826 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +02001827 HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001828 }
1829 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001830 if (may_dequeue_tasks(srv, s->be))
1831 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001832 }
1833 }
1834
1835 /*
1836 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1837 * at this point.
1838 */
1839
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001840 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001841 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001842 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1843 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001844 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001845 si_f->state != rq_prod_last ||
1846 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001847 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001848 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001849
Willy Tarreau8f128b42014-11-28 15:07:47 +01001850 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001851 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001852 unsigned int ana_list;
1853 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001854
Willy Tarreau90deb182010-01-07 00:20:41 +01001855 /* it's up to the analysers to stop new connections,
1856 * disable reading or closing. Note: if an analyser
1857 * disables any of these bits, it is responsible for
1858 * enabling them again when it disables itself, so
1859 * that other analysers are called in similar conditions.
1860 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001861 channel_auto_read(req);
1862 channel_auto_connect(req);
1863 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001864
1865 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001866 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001867 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001868 * the list when not needed. Any analyser may return 0
1869 * to break out of the loop, either because of missing
1870 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001871 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001872 * analyser, and we may loop again if other analysers
1873 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001874 *
1875 * We build a list of analysers to run. We evaluate all
1876 * of these analysers in the order of the lower bit to
1877 * the higher bit. This ordering is very important.
1878 * An analyser will often add/remove other analysers,
1879 * including itself. Any changes to itself have no effect
1880 * on the loop. If it removes any other analysers, we
1881 * want those analysers not to be called anymore during
1882 * this loop. If it adds an analyser that is located
1883 * after itself, we want it to be scheduled for being
1884 * processed during the loop. If it adds an analyser
1885 * which is located before it, we want it to switch to
1886 * it immediately, even if it has already been called
1887 * once but removed since.
1888 *
1889 * In order to achieve this, we compare the analyser
1890 * list after the call with a copy of it before the
1891 * call. The work list is fed with analyser bits that
1892 * appeared during the call. Then we compare previous
1893 * work list with the new one, and check the bits that
1894 * appeared. If the lowest of these bits is lower than
1895 * the current bit, it means we have enabled a previous
1896 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001897 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001898
Willy Tarreau8f128b42014-11-28 15:07:47 +01001899 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001900 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001901 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001902 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001903 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1904 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1905 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1906 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1907 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001908 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001909 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1910 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1911 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1912 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1913 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1914 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1915 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001916 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001917 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001918 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1919 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001920 break;
1921 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001922 }
Willy Tarreau84455332009-03-15 22:34:05 +01001923
Willy Tarreau8f128b42014-11-28 15:07:47 +01001924 rq_prod_last = si_f->state;
1925 rq_cons_last = si_b->state;
1926 req->flags &= ~CF_WAKE_ONCE;
1927 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001928
Willy Tarreau8f128b42014-11-28 15:07:47 +01001929 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001930 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001931 }
1932
Willy Tarreau576507f2010-01-07 00:09:04 +01001933 /* we'll monitor the request analysers while parsing the response,
1934 * because some response analysers may indirectly enable new request
1935 * analysers (eg: HTTP keep-alive).
1936 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001937 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01001938
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001939 resync_response:
1940 /* Analyse response */
1941
Willy Tarreau8f128b42014-11-28 15:07:47 +01001942 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
1943 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001944 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001945 si_f->state != rp_cons_last ||
1946 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001947 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001948 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001949
Willy Tarreau8f128b42014-11-28 15:07:47 +01001950 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001951 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001952 unsigned int ana_list;
1953 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001954
Willy Tarreau90deb182010-01-07 00:20:41 +01001955 /* it's up to the analysers to stop disable reading or
1956 * closing. Note: if an analyser disables any of these
1957 * bits, it is responsible for enabling them again when
1958 * it disables itself, so that other analysers are called
1959 * in similar conditions.
1960 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001961 channel_auto_read(res);
1962 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001963
1964 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001965 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001966 * to MSB. The analysers must remove themselves from
1967 * the list when not needed. Any analyser may return 0
1968 * to break out of the loop, either because of missing
1969 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001970 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001971 * analyser, and we may loop again if other analysers
1972 * are added in the middle.
1973 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001974
Willy Tarreau8f128b42014-11-28 15:07:47 +01001975 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001976 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001977 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001978 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
1979 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001980 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
1981 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
1982 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
1983 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 +01001984 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001985 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001986 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
1987 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001988 break;
1989 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001990 }
1991
Willy Tarreau8f128b42014-11-28 15:07:47 +01001992 rp_cons_last = si_f->state;
1993 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02001994 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001995 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001996
Willy Tarreau8f128b42014-11-28 15:07:47 +01001997 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001998 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001999 }
2000
Willy Tarreau576507f2010-01-07 00:09:04 +01002001 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002002 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002003 goto resync_request;
2004
Willy Tarreau8f128b42014-11-28 15:07:47 +01002005 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002006 goto resync_request;
2007
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002008 /* FIXME: here we should call protocol handlers which rely on
2009 * both buffers.
2010 */
2011
2012
2013 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002014 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002015 * we're just in a data phase here since it means we have not
2016 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002017 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002018 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002019 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002020 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002021 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002022 req->analysers = 0;
2023 if (req->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002024 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2025 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002026 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002027 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002028 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002029 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002030 else if (req->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002031 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2032 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002033 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002034 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002035 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002036 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002037 else if (req->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002038 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2039 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002040 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002041 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002042 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002043 }
2044 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002045 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2046 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002047 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002048 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002049 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002050 }
Willy Tarreau84455332009-03-15 22:34:05 +01002051 sess_set_term_flags(s);
2052 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002053 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002054 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002055 res->analysers = 0;
2056 if (res->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002057 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2058 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002059 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002060 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002061 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002062 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002063 else if (res->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002064 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2065 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002066 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002067 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002068 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002069 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002070 else if (res->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002071 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2072 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002073 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002074 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002075 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002076 }
2077 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002078 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2079 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002080 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002081 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002082 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002083 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002084 sess_set_term_flags(s);
2085 }
Willy Tarreau84455332009-03-15 22:34:05 +01002086 }
2087
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002088 /*
2089 * Here we take care of forwarding unhandled data. This also includes
2090 * connection establishments and shutdown requests.
2091 */
2092
2093
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002094 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002095 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002096 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002097 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002098 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002099 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002100 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2101 (si_f->state >= SI_ST_EST) &&
2102 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002103 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002104 * attached to it. If any data are left in, we'll permit them to
2105 * move.
2106 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002107 channel_auto_read(req);
2108 channel_auto_connect(req);
2109 channel_auto_close(req);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002110 c_adv(req, ci_data(req));
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002111
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002112 /* We'll let data flow between the producer (if still connected)
2113 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002114 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002115 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002116 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002117
2118 /* Just in order to support fetching HTTP contents after start
2119 * of forwarding when the HTTP forwarding analyser is not used,
2120 * we simply reset msg->sov so that HTTP rewinding points to the
2121 * headers.
2122 */
2123 if (s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002124 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - co_data(req);
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002125 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002126
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002127 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002128 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2129 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002130 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002131 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2132 (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 +01002133 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002134 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2135 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002136 (req->flags & CF_STREAMER_FAST)))) {
2137 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002138 }
2139
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002140 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002141 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002142
2143 /*
2144 * Now forward all shutdown requests between both sides of the buffer
2145 */
2146
Willy Tarreau520d95e2009-09-19 21:04:57 +02002147 /* first, let's check if the request buffer needs to shutdown(write), which may
2148 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002149 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2150 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002151 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002152 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002153 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002154 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002155 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002156
2157 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002158 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2159 channel_is_empty(req))) {
2160 if (req->flags & CF_READ_ERROR)
2161 si_b->flags |= SI_FL_NOLINGER;
2162 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002163 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002164
2165 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002166 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2167 !req->analysers))
2168 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002169
2170 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002171 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2172 if (si_f->flags & SI_FL_NOHALF)
2173 si_f->flags |= SI_FL_NOLINGER;
2174 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002175 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002176
Willy Tarreau520d95e2009-09-19 21:04:57 +02002177 /* it's possible that an upper layer has requested a connection setup or abort.
2178 * There are 2 situations where we decide to establish a new connection :
2179 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002180 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002181 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002182 if (si_b->state == SI_ST_INI) {
2183 if (!(req->flags & CF_SHUTW)) {
2184 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002185 /* If we have an appctx, there is no connect method, so we
2186 * immediately switch to the connected state, otherwise we
2187 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002188 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002189 si_b->state = SI_ST_REQ; /* new connection requested */
2190 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002191 }
Willy Tarreau73201222009-08-16 18:27:24 +02002192 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002193 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002194 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002195 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2196 channel_shutw_now(req); /* fix buffer flags upon abort */
2197 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002198 }
Willy Tarreau92795622009-03-06 12:51:23 +01002199 }
2200
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002201
2202 /* we may have a pending connection request, or a connection waiting
2203 * for completion.
2204 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002205 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002206
2207 /* prune the request variables and swap to the response variables. */
2208 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreau6204cd92016-03-10 16:33:04 +01002209 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002210 vars_init(&s->vars_reqres, SCOPE_RES);
2211 }
2212
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002213 do {
2214 /* nb: step 1 might switch from QUE to ASS, but we first want
2215 * to give a chance to step 2 to perform a redirect if needed.
2216 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002217 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002218 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002219 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002220 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002221
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002222 /* applets directly go to the ESTABLISHED state. Similarly,
2223 * servers experience the same fate when their connection
2224 * is reused.
2225 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002226 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002227 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002228
Willy Tarreaub44c8732013-12-31 23:16:50 +01002229 /* Now we can add the server name to a header (if requested) */
2230 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002231 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002232 (s->be->server_id_hdr_name != NULL) &&
2233 (s->be->mode == PR_MODE_HTTP) &&
2234 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002235 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002236 }
2237
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002238 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002239 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002240 http_perform_server_redirect(s, si_b);
2241 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002242 }
2243
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002244 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002245 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002246 goto resync_stream_interface;
2247
Willy Tarreau815a9b22010-07-27 17:15:12 +02002248 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002249 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002250 goto resync_request;
2251
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002252 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002253
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002254 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002255 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002256 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002257 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002258 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002259 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002260 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2261 (si_b->state >= SI_ST_EST) &&
2262 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002263 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002264 * attached to it. If any data are left in, we'll permit them to
2265 * move.
2266 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002267 channel_auto_read(res);
2268 channel_auto_close(res);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002269 c_adv(res, ci_data(res));
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002270
2271 /* We'll let data flow between the producer (if still connected)
2272 * to the consumer.
2273 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002274 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002275 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002276
Willy Tarreau42529c32015-07-09 18:38:57 +02002277 /* Just in order to support fetching HTTP contents after start
2278 * of forwarding when the HTTP forwarding analyser is not used,
2279 * we simply reset msg->sov so that HTTP rewinding points to the
2280 * headers.
2281 */
2282 if (s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002283 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - co_data(res);
Willy Tarreau42529c32015-07-09 18:38:57 +02002284
Willy Tarreauce887fd2012-05-12 12:50:00 +02002285 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002286 * tunnel timeout set, use it now. Note that we must respect
2287 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002288 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002289 if (!req->analysers && s->be->timeout.tunnel) {
2290 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002291 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002292
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002293 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2294 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002295 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2296 res->rto = s->be->timeout.serverfin;
2297 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2298 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002299 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2300 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002301
Willy Tarreau8f128b42014-11-28 15:07:47 +01002302 req->rex = tick_add(now_ms, req->rto);
2303 req->wex = tick_add(now_ms, req->wto);
2304 res->rex = tick_add(now_ms, res->rto);
2305 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002306 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002307 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002308
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002309 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002310 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2311 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002312 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002313 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2314 (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 +01002315 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002316 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2317 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002318 (res->flags & CF_STREAMER_FAST)))) {
2319 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002320 }
2321
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002322 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002323 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002324
2325 /*
2326 * Now forward all shutdown requests between both sides of the buffer
2327 */
2328
2329 /*
2330 * FIXME: this is probably where we should produce error responses.
2331 */
2332
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002333 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002334 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002335 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002336 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002337 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002338
2339 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002340 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2341 channel_is_empty(res))) {
2342 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002343 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002344
2345 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002346 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2347 !res->analysers)
2348 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002349
2350 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002351 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2352 if (si_b->flags & SI_FL_NOHALF)
2353 si_b->flags |= SI_FL_NOLINGER;
2354 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002355 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002356
Willy Tarreau8f128b42014-11-28 15:07:47 +01002357 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002358 goto resync_stream_interface;
2359
Willy Tarreau8f128b42014-11-28 15:07:47 +01002360 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002361 goto resync_request;
2362
Willy Tarreau8f128b42014-11-28 15:07:47 +01002363 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002364 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002365
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002366 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002367 si_f->flags &= ~SI_FL_DONT_WAKE;
2368 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002369
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002370 /* This is needed only when debugging is enabled, to indicate
2371 * client-side or server-side close. Please note that in the unlikely
2372 * event where both sides would close at once, the sequence is reported
2373 * on the server side first.
2374 */
2375 if (unlikely((global.mode & MODE_DEBUG) &&
2376 (!(global.mode & MODE_QUIET) ||
2377 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002378 if (si_b->state == SI_ST_CLO &&
2379 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002380 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002381 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002382 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2383 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002384 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002385 }
2386
Willy Tarreau8f128b42014-11-28 15:07:47 +01002387 if (si_f->state == SI_ST_CLO &&
2388 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002389 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002390 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002391 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2392 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002393 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002394 }
2395 }
2396
Willy Tarreau8f128b42014-11-28 15:07:47 +01002397 if (likely((si_f->state != SI_ST_CLO) ||
2398 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002399
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002400 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002401 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002402
Willy Tarreau563cc372015-04-19 18:13:56 +02002403 if (si_f->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002404 si_update(si_f);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002405
Willy Tarreau563cc372015-04-19 18:13:56 +02002406 if (si_b->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002407 si_update(si_b);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002408
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +01002409 req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED|CF_WRITE_EVENT);
2410 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 +01002411 si_f->prev_state = si_f->state;
2412 si_b->prev_state = si_b->state;
2413 si_f->flags &= ~(SI_FL_ERR|SI_FL_EXP);
2414 si_b->flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002415
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002416 /* Trick: if a request is being waiting for the server to respond,
2417 * and if we know the server can timeout, we don't want the timeout
2418 * to expire on the client side first, but we're still interested
2419 * in passing data from the client to the server (eg: POST). Thus,
2420 * we can cancel the client's request timeout if the server's
2421 * request timeout is set and the server has not yet sent a response.
2422 */
2423
Willy Tarreau8f128b42014-11-28 15:07:47 +01002424 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2425 (tick_isset(req->wex) || tick_isset(res->rex))) {
2426 req->flags |= CF_READ_NOEXP;
2427 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002428 }
2429
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002430 /* Reset pending events now */
2431 s->pending_events = 0;
2432
Willy Tarreau798f4322012-11-08 14:49:17 +01002433 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002434 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002435 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2436 tick_first(tick_first(req->rex, req->wex),
2437 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002438 if (!req->analysers)
2439 req->analyse_exp = TICK_ETERNITY;
2440
2441 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2442 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2443 req->analyse_exp = tick_add(now_ms, 5000);
2444
2445 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002446
Willy Tarreau9a398be2017-11-10 17:14:23 +01002447 t->expire = tick_first(t->expire, res->analyse_exp);
2448
Willy Tarreau8f128b42014-11-28 15:07:47 +01002449 if (si_f->exp)
2450 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002451
Willy Tarreau8f128b42014-11-28 15:07:47 +01002452 if (si_b->exp)
2453 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002454
Christopher Faulet56803b12017-11-24 16:06:18 +01002455 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002456 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2457 " 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 +01002458 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2459 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002460
2461#ifdef DEBUG_DEV
2462 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002463 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002464 ABORT_NOW();
2465#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002466 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002467 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002468 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002469 }
2470
Willy Tarreaue7dff022015-04-03 01:14:29 +02002471 if (s->flags & SF_BE_ASSIGNED)
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002472 HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002473
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002474 if (unlikely((global.mode & MODE_DEBUG) &&
2475 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002476 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002477 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002478 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2479 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002480 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002481 }
2482
2483 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002484 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002485
Willy Tarreaueee5b512015-04-03 23:46:31 +02002486 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002487 int n;
2488
Willy Tarreaueee5b512015-04-03 23:46:31 +02002489 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002490 if (n < 1 || n > 5)
2491 n = 0;
2492
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002493 if (sess->fe->mode == PR_MODE_HTTP) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002494 HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002495 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002496 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002497 (s->be->mode == PR_MODE_HTTP)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002498 HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2499 HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002500 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002501 }
2502
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002503 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002504 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002505 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002506 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002507 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002508 }
2509
Willy Tarreau87b09662015-04-03 00:22:06 +02002510 /* update time stats for this stream */
2511 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002512
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002513 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002514 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002515 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002516 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002517 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002518}
2519
Willy Tarreau87b09662015-04-03 00:22:06 +02002520/* Update the stream's backend and server time stats */
2521void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002522{
2523 int t_request;
2524 int t_queue;
2525 int t_connect;
2526 int t_data;
2527 int t_close;
2528 struct server *srv;
2529
2530 t_request = 0;
2531 t_queue = s->logs.t_queue;
2532 t_connect = s->logs.t_connect;
2533 t_close = s->logs.t_close;
2534 t_data = s->logs.t_data;
2535
2536 if (s->be->mode != PR_MODE_HTTP)
2537 t_data = t_connect;
2538
2539 if (t_connect < 0 || t_data < 0)
2540 return;
2541
2542 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2543 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2544
2545 t_data -= t_connect;
2546 t_connect -= t_queue;
2547 t_queue -= t_request;
2548
2549 srv = objt_server(s->target);
2550 if (srv) {
2551 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2552 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2553 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2554 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2555 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002556 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002557 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2558 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2559 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2560 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002561 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002562}
2563
Willy Tarreau7c669d72008-06-20 15:04:11 +02002564/*
2565 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002566 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002567 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002568 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002569 * server.
2570 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002571void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002572{
2573 if (sess->srv_conn == newsrv)
2574 return;
2575
2576 if (sess->srv_conn) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002577 HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002578 HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002579 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2580 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002581 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002582 }
2583
2584 if (newsrv) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002585 HA_ATOMIC_ADD(&newsrv->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002586 HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002587 if (newsrv->proxy->lbprm.server_take_conn)
2588 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002589 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002590 }
2591}
2592
Willy Tarreau84455332009-03-15 22:34:05 +01002593/* Handle server-side errors for default protocols. It is called whenever a a
2594 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002595 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002596 * them. It's installed as ->srv_error for the server-side stream_interface.
2597 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002598void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002599{
2600 int err_type = si->err_type;
2601 int err = 0, fin = 0;
2602
2603 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002604 err = SF_ERR_CLICL;
2605 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002606 }
2607 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002608 err = SF_ERR_CLICL;
2609 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002610 }
2611 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002612 err = SF_ERR_SRVTO;
2613 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002614 }
2615 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002616 err = SF_ERR_SRVCL;
2617 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002618 }
2619 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002620 err = SF_ERR_SRVTO;
2621 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002622 }
2623 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002624 err = SF_ERR_SRVCL;
2625 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002626 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002627 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002628 err = SF_ERR_RESOURCE;
2629 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002630 }
Willy Tarreau84455332009-03-15 22:34:05 +01002631 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002632 err = SF_ERR_INTERNAL;
2633 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002634 }
2635
Willy Tarreaue7dff022015-04-03 01:14:29 +02002636 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002637 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002638 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002639 s->flags |= fin;
2640}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002641
Willy Tarreaue7dff022015-04-03 01:14:29 +02002642/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002643void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002644{
Willy Tarreau87b09662015-04-03 00:22:06 +02002645 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002646 return;
2647
Willy Tarreau87b09662015-04-03 00:22:06 +02002648 channel_shutw_now(&stream->req);
2649 channel_shutr_now(&stream->res);
2650 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002651 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002652 stream->flags |= why;
2653 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002654}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002655
Willy Tarreau8b22a712010-06-18 17:46:06 +02002656/************************************************************************/
2657/* All supported ACL keywords must be declared here. */
2658/************************************************************************/
2659
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002660/* 0=OK, <0=Alert, >0=Warning */
2661static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2662 struct proxy *px, struct act_rule *rule,
2663 char **err)
2664{
2665 struct action_kw *kw;
2666
2667 /* Check if the service name exists. */
2668 if (*(args[*cur_arg]) == 0) {
2669 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002670 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002671 }
2672
2673 /* lookup for keyword corresponding to a service. */
2674 kw = action_lookup(&service_keywords, args[*cur_arg]);
2675 if (!kw) {
2676 memprintf(err, "'%s' unknown service name.", args[1]);
2677 return ACT_RET_PRS_ERR;
2678 }
2679 (*cur_arg)++;
2680
2681 /* executes specific rule parser. */
2682 rule->kw = kw;
2683 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2684 return ACT_RET_PRS_ERR;
2685
2686 /* Register processing function. */
2687 rule->action_ptr = process_use_service;
2688 rule->action = ACT_CUSTOM;
2689
2690 return ACT_RET_PRS_OK;
2691}
2692
2693void service_keywords_register(struct action_kw_list *kw_list)
2694{
2695 LIST_ADDQ(&service_keywords, &kw_list->list);
2696}
2697
William Lallemand4c5b4d52016-11-21 08:51:11 +01002698
2699/* This function dumps a complete stream state onto the stream interface's
2700 * read buffer. The stream has to be set in strm. It returns 0 if the output
2701 * buffer is full and it needs to be called again, otherwise non-zero. It is
2702 * designed to be called from stats_dump_strm_to_buffer() below.
2703 */
2704static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2705{
2706 struct appctx *appctx = __objt_appctx(si->end);
2707 struct tm tm;
2708 extern const char *monthname[12];
2709 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002710 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01002711 struct connection *conn;
2712 struct appctx *tmpctx;
2713
2714 chunk_reset(&trash);
2715
2716 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2717 /* stream changed, no need to go any further */
2718 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002719 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01002720 si_applet_cant_put(si);
2721 return 0;
2722 }
2723 appctx->ctx.sess.uid = 0;
2724 appctx->ctx.sess.section = 0;
2725 return 1;
2726 }
2727
2728 switch (appctx->ctx.sess.section) {
2729 case 0: /* main status of the stream */
2730 appctx->ctx.sess.uid = strm->uniq_id;
2731 appctx->ctx.sess.section = 1;
2732 /* fall through */
2733
2734 case 1:
2735 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2736 chunk_appendf(&trash,
2737 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2738 strm,
2739 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2740 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2741 strm->uniq_id,
2742 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2743
2744 conn = objt_conn(strm_orig(strm));
2745 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2746 case AF_INET:
2747 case AF_INET6:
2748 chunk_appendf(&trash, " source=%s:%d\n",
2749 pn, get_host_port(&conn->addr.from));
2750 break;
2751 case AF_UNIX:
2752 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2753 break;
2754 default:
2755 /* no more information to print right now */
2756 chunk_appendf(&trash, "\n");
2757 break;
2758 }
2759
2760 chunk_appendf(&trash,
2761 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2762 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2763
2764 chunk_appendf(&trash,
2765 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2766 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2767 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2768 strm_li(strm) ? strm_li(strm)->luid : 0);
2769
2770 if (conn)
2771 conn_get_to_addr(conn);
2772
2773 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2774 case AF_INET:
2775 case AF_INET6:
2776 chunk_appendf(&trash, " addr=%s:%d\n",
2777 pn, get_host_port(&conn->addr.to));
2778 break;
2779 case AF_UNIX:
2780 chunk_appendf(&trash, " addr=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 if (strm->be->cap & PR_CAP_BE)
2789 chunk_appendf(&trash,
2790 " backend=%s (id=%u mode=%s)",
2791 strm->be->id,
2792 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2793 else
2794 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2795
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002796 cs = objt_cs(strm->si[1].end);
2797 conn = cs_conn(cs);
2798
William Lallemand4c5b4d52016-11-21 08:51:11 +01002799 if (conn)
2800 conn_get_from_addr(conn);
2801
2802 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2803 case AF_INET:
2804 case AF_INET6:
2805 chunk_appendf(&trash, " addr=%s:%d\n",
2806 pn, get_host_port(&conn->addr.from));
2807 break;
2808 case AF_UNIX:
2809 chunk_appendf(&trash, " addr=unix\n");
2810 break;
2811 default:
2812 /* no more information to print right now */
2813 chunk_appendf(&trash, "\n");
2814 break;
2815 }
2816
2817 if (strm->be->cap & PR_CAP_BE)
2818 chunk_appendf(&trash,
2819 " server=%s (id=%u)",
2820 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2821 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2822 else
2823 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2824
2825 if (conn)
2826 conn_get_to_addr(conn);
2827
2828 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2829 case AF_INET:
2830 case AF_INET6:
2831 chunk_appendf(&trash, " addr=%s:%d\n",
2832 pn, get_host_port(&conn->addr.to));
2833 break;
2834 case AF_UNIX:
2835 chunk_appendf(&trash, " addr=unix\n");
2836 break;
2837 default:
2838 /* no more information to print right now */
2839 chunk_appendf(&trash, "\n");
2840 break;
2841 }
2842
2843 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002844 " task=%p (state=0x%02x nice=%d calls=%d exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002845 strm->task,
2846 strm->task->state,
2847 strm->task->nice, strm->task->calls,
2848 strm->task->expire ?
2849 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2850 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2851 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01002852 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01002853 task_in_rq(strm->task) ? ", running" : "");
2854
2855 chunk_appendf(&trash,
2856 " age=%s)\n",
2857 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2858
2859 if (strm->txn)
2860 chunk_appendf(&trash,
2861 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2862 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02002863 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 +01002864
2865 chunk_appendf(&trash,
2866 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2867 &strm->si[0],
2868 si_state_str(strm->si[0].state),
2869 strm->si[0].flags,
2870 obj_type_name(strm->si[0].end),
2871 obj_base_ptr(strm->si[0].end),
2872 strm->si[0].exp ?
2873 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2874 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2875 TICKS_TO_MS(1000)) : "<NEVER>",
2876 strm->si[0].err_type);
2877
2878 chunk_appendf(&trash,
2879 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2880 &strm->si[1],
2881 si_state_str(strm->si[1].state),
2882 strm->si[1].flags,
2883 obj_type_name(strm->si[1].end),
2884 obj_base_ptr(strm->si[1].end),
2885 strm->si[1].exp ?
2886 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2887 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2888 TICKS_TO_MS(1000)) : "<NEVER>",
2889 strm->si[1].err_type);
2890
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002891 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
2892 conn = cs->conn;
2893
William Lallemand4c5b4d52016-11-21 08:51:11 +01002894 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002895 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002896 conn,
2897 conn_get_ctrl_name(conn),
2898 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002899 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002900 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002901 obj_type_name(conn->target),
2902 obj_base_ptr(conn->target));
2903
2904 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002905 " 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 +01002906 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002907 conn->handle.fd,
2908 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002909 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002910 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002911 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002912 }
2913 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2914 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002915 " 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 +01002916 tmpctx,
2917 tmpctx->st0,
2918 tmpctx->st1,
2919 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002920 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002921 tmpctx->thread_mask,
2922 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002923 }
2924
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002925 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
2926 conn = cs->conn;
2927
William Lallemand4c5b4d52016-11-21 08:51:11 +01002928 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002929 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002930 conn,
2931 conn_get_ctrl_name(conn),
2932 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002933 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002934 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002935 obj_type_name(conn->target),
2936 obj_base_ptr(conn->target));
2937
2938 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002939 " 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 +01002940 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002941 conn->handle.fd,
2942 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002943 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002944 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002945 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002946 }
2947 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
2948 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002949 " 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 +01002950 tmpctx,
2951 tmpctx->st0,
2952 tmpctx->st1,
2953 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002954 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002955 tmpctx->thread_mask,
2956 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002957 }
2958
2959 chunk_appendf(&trash,
2960 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2961 " an_exp=%s",
2962 &strm->req,
2963 strm->req.flags, strm->req.analysers,
2964 strm->req.pipe ? strm->req.pipe->data : 0,
2965 strm->req.to_forward, strm->req.total,
2966 strm->req.analyse_exp ?
2967 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
2968 TICKS_TO_MS(1000)) : "<NEVER>");
2969
2970 chunk_appendf(&trash,
2971 " rex=%s",
2972 strm->req.rex ?
2973 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
2974 TICKS_TO_MS(1000)) : "<NEVER>");
2975
2976 chunk_appendf(&trash,
2977 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002978 " buf=%p data=%p o=%u p=%u req.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002979 strm->req.wex ?
2980 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
2981 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002982 &strm->req.buf,
2983 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002984 (unsigned int)ci_head_ofs(&strm->req),
Willy Tarreau591d4452018-06-15 17:21:00 +02002985 strm->txn ? strm->txn->req.next : 0, (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002986 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002987
2988 chunk_appendf(&trash,
2989 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2990 " an_exp=%s",
2991 &strm->res,
2992 strm->res.flags, strm->res.analysers,
2993 strm->res.pipe ? strm->res.pipe->data : 0,
2994 strm->res.to_forward, strm->res.total,
2995 strm->res.analyse_exp ?
2996 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
2997 TICKS_TO_MS(1000)) : "<NEVER>");
2998
2999 chunk_appendf(&trash,
3000 " rex=%s",
3001 strm->res.rex ?
3002 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3003 TICKS_TO_MS(1000)) : "<NEVER>");
3004
3005 chunk_appendf(&trash,
3006 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003007 " buf=%p data=%p o=%u p=%u rsp.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003008 strm->res.wex ?
3009 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3010 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003011 &strm->res.buf,
3012 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003013 (unsigned int)ci_head_ofs(&strm->res),
Willy Tarreau591d4452018-06-15 17:21:00 +02003014 strm->txn ? strm->txn->rsp.next : 0, (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003015 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003016
Willy Tarreau06d80a92017-10-19 14:32:15 +02003017 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003018 si_applet_cant_put(si);
3019 return 0;
3020 }
3021
3022 /* use other states to dump the contents */
3023 }
3024 /* end of dump */
3025 appctx->ctx.sess.uid = 0;
3026 appctx->ctx.sess.section = 0;
3027 return 1;
3028}
3029
3030
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003031static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003032{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003033 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3034 return 1;
3035
3036 if (*args[2] && strcmp(args[2], "all") == 0)
3037 appctx->ctx.sess.target = (void *)-1;
3038 else if (*args[2])
3039 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3040 else
3041 appctx->ctx.sess.target = NULL;
3042 appctx->ctx.sess.section = 0; /* start with stream status */
3043 appctx->ctx.sess.pos = 0;
3044
3045 return 0;
3046}
3047
3048/* This function dumps all streams' states onto the stream interface's
3049 * read buffer. It returns 0 if the output buffer is full and it needs
3050 * to be called again, otherwise non-zero. It is designed to be called
3051 * from stats_dump_sess_to_buffer() below.
3052 */
3053static int cli_io_handler_dump_sess(struct appctx *appctx)
3054{
3055 struct stream_interface *si = appctx->owner;
3056 struct connection *conn;
3057
3058 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3059 /* If we're forced to shut down, we might have to remove our
3060 * reference to the last stream being dumped.
3061 */
3062 if (appctx->st2 == STAT_ST_LIST) {
3063 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3064 LIST_DEL(&appctx->ctx.sess.bref.users);
3065 LIST_INIT(&appctx->ctx.sess.bref.users);
3066 }
3067 }
3068 return 1;
3069 }
3070
3071 chunk_reset(&trash);
3072
3073 switch (appctx->st2) {
3074 case STAT_ST_INIT:
3075 /* the function had not been called yet, let's prepare the
3076 * buffer for a response. We initialize the current stream
3077 * pointer to the first in the global list. When a target
3078 * stream is being destroyed, it is responsible for updating
3079 * this pointer. We know we have reached the end when this
3080 * pointer points back to the head of the streams list.
3081 */
3082 LIST_INIT(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003083 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003084 appctx->ctx.sess.bref.ref = streams.n;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003085 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003086 appctx->st2 = STAT_ST_LIST;
3087 /* fall through */
3088
3089 case STAT_ST_LIST:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003090 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003091 /* first, let's detach the back-ref from a possible previous stream */
3092 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3093 LIST_DEL(&appctx->ctx.sess.bref.users);
3094 LIST_INIT(&appctx->ctx.sess.bref.users);
3095 }
3096
3097 /* and start from where we stopped */
3098 while (appctx->ctx.sess.bref.ref != &streams) {
3099 char pn[INET6_ADDRSTRLEN];
3100 struct stream *curr_strm;
3101
3102 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3103
3104 if (appctx->ctx.sess.target) {
3105 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3106 goto next_sess;
3107
3108 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3109 /* call the proper dump() function and return if we're missing space */
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003110 if (!stats_dump_full_strm_to_buffer(si, curr_strm)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003111 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003112 return 0;
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003113 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003114
3115 /* stream dump complete */
3116 LIST_DEL(&appctx->ctx.sess.bref.users);
3117 LIST_INIT(&appctx->ctx.sess.bref.users);
3118 if (appctx->ctx.sess.target != (void *)-1) {
3119 appctx->ctx.sess.target = NULL;
3120 break;
3121 }
3122 else
3123 goto next_sess;
3124 }
3125
3126 chunk_appendf(&trash,
3127 "%p: proto=%s",
3128 curr_strm,
3129 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3130
3131 conn = objt_conn(strm_orig(curr_strm));
3132 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3133 case AF_INET:
3134 case AF_INET6:
3135 chunk_appendf(&trash,
3136 " src=%s:%d fe=%s be=%s srv=%s",
3137 pn,
3138 get_host_port(&conn->addr.from),
3139 strm_fe(curr_strm)->id,
3140 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3141 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3142 );
3143 break;
3144 case AF_UNIX:
3145 chunk_appendf(&trash,
3146 " src=unix:%d fe=%s be=%s srv=%s",
3147 strm_li(curr_strm)->luid,
3148 strm_fe(curr_strm)->id,
3149 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3150 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3151 );
3152 break;
3153 }
3154
3155 chunk_appendf(&trash,
3156 " ts=%02x age=%s calls=%d",
3157 curr_strm->task->state,
3158 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3159 curr_strm->task->calls);
3160
3161 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003162 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003163 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003164 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003165 curr_strm->req.analysers,
3166 curr_strm->req.rex ?
3167 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3168 TICKS_TO_MS(1000)) : "");
3169
3170 chunk_appendf(&trash,
3171 ",wx=%s",
3172 curr_strm->req.wex ?
3173 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3174 TICKS_TO_MS(1000)) : "");
3175
3176 chunk_appendf(&trash,
3177 ",ax=%s]",
3178 curr_strm->req.analyse_exp ?
3179 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3180 TICKS_TO_MS(1000)) : "");
3181
3182 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003183 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003184 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003185 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003186 curr_strm->res.analysers,
3187 curr_strm->res.rex ?
3188 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3189 TICKS_TO_MS(1000)) : "");
3190
3191 chunk_appendf(&trash,
3192 ",wx=%s",
3193 curr_strm->res.wex ?
3194 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3195 TICKS_TO_MS(1000)) : "");
3196
3197 chunk_appendf(&trash,
3198 ",ax=%s]",
3199 curr_strm->res.analyse_exp ?
3200 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3201 TICKS_TO_MS(1000)) : "");
3202
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003203 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003204 chunk_appendf(&trash,
3205 " s0=[%d,%1xh,fd=%d,ex=%s]",
3206 curr_strm->si[0].state,
3207 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003208 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003209 curr_strm->si[0].exp ?
3210 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3211 TICKS_TO_MS(1000)) : "");
3212
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003213 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003214 chunk_appendf(&trash,
3215 " s1=[%d,%1xh,fd=%d,ex=%s]",
3216 curr_strm->si[1].state,
3217 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003218 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003219 curr_strm->si[1].exp ?
3220 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3221 TICKS_TO_MS(1000)) : "");
3222
3223 chunk_appendf(&trash,
3224 " exp=%s",
3225 curr_strm->task->expire ?
3226 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3227 TICKS_TO_MS(1000)) : "");
3228 if (task_in_rq(curr_strm->task))
3229 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3230
3231 chunk_appendf(&trash, "\n");
3232
Willy Tarreau06d80a92017-10-19 14:32:15 +02003233 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003234 /* let's try again later from this stream. We add ourselves into
3235 * this stream's users so that it can remove us upon termination.
3236 */
3237 si_applet_cant_put(si);
3238 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003239 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003240 return 0;
3241 }
3242
3243 next_sess:
3244 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3245 }
3246
3247 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3248 /* specified stream not found */
3249 if (appctx->ctx.sess.section > 0)
3250 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3251 else
3252 chunk_appendf(&trash, "Session not found.\n");
3253
Willy Tarreau06d80a92017-10-19 14:32:15 +02003254 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003255 si_applet_cant_put(si);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003256 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003257 return 0;
3258 }
3259
3260 appctx->ctx.sess.target = NULL;
3261 appctx->ctx.sess.uid = 0;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003262 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003263 return 1;
3264 }
3265
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003266 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003267 /* fall through */
3268
3269 default:
3270 appctx->st2 = STAT_ST_FIN;
3271 return 1;
3272 }
3273}
3274
3275static void cli_release_show_sess(struct appctx *appctx)
3276{
3277 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003278 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003279 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3280 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003281 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003282 }
3283}
3284
Willy Tarreau61b65212016-11-24 11:09:25 +01003285/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003286static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003287{
3288 struct stream *strm, *ptr;
3289
3290 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3291 return 1;
3292
3293 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003294 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003295 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003296 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003297 return 1;
3298 }
3299
3300 ptr = (void *)strtoul(args[2], NULL, 0);
3301
3302 /* first, look for the requested stream in the stream table */
3303 list_for_each_entry(strm, &streams, list) {
3304 if (strm == ptr)
3305 break;
3306 }
3307
3308 /* do we have the stream ? */
3309 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003310 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003311 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003312 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003313 return 1;
3314 }
3315
3316 stream_shutdown(strm, SF_ERR_KILLED);
3317 return 1;
3318}
3319
Willy Tarreau4e46b622016-11-23 16:50:48 +01003320/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003321static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003322{
3323 struct server *sv;
3324 struct stream *strm, *strm_bck;
3325
3326 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3327 return 1;
3328
3329 sv = cli_find_server(appctx, args[3]);
3330 if (!sv)
3331 return 1;
3332
3333 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003334 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003335 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3336 if (strm->srv_conn == sv)
3337 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003338 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003339 return 1;
3340}
3341
William Lallemand4c5b4d52016-11-21 08:51:11 +01003342/* register cli keywords */
3343static struct cli_kw_list cli_kws = {{ },{
3344 { { "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 +01003345 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003346 { { "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 +01003347 {{},}
3348}};
3349
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003350/* main configuration keyword registration. */
3351static struct action_kw_list stream_tcp_keywords = { ILH, {
3352 { "use-service", stream_parse_use_service },
3353 { /* END */ }
3354}};
3355
3356static struct action_kw_list stream_http_keywords = { ILH, {
3357 { "use-service", stream_parse_use_service },
3358 { /* END */ }
3359}};
3360
Willy Tarreau8b22a712010-06-18 17:46:06 +02003361__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003362static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003363{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003364 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3365 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003366 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003367}
3368
Willy Tarreaubaaee002006-06-26 02:48:02 +02003369/*
3370 * Local variables:
3371 * c-indent-level: 8
3372 * c-basic-offset: 8
3373 * End:
3374 */