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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 Tarreau61c112a2018-10-02 16:43:32 +020046#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020047#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020048#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020049#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020050#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020051#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010052#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010053#include <proto/proto_http.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020054#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020055#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010056#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020057#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010058#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010059#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010060#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010061#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020062#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020063
Willy Tarreaubafbe012017-11-24 17:34:44 +010064struct pool_head *pool_head_stream;
Willy Tarreau87b09662015-04-03 00:22:06 +020065struct list streams;
Christopher Faulet9dcf9b62017-11-13 10:34:01 +010066__decl_hathreads(HA_SPINLOCK_T streams_lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +020067
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020068/* List of all use-service keywords. */
69static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
70
Willy Tarreau5790eb02017-08-28 17:18:36 +020071
72/* Create a new stream for connection <conn>. Return < 0 on error. This is only
73 * valid right after the handshake, before the connection's data layer is
74 * initialized, because it relies on the session to be in conn->owner.
75 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +020076int stream_create_from_cs(struct conn_stream *cs)
Willy Tarreau5790eb02017-08-28 17:18:36 +020077{
78 struct stream *strm;
79
Olivier Houchard9aaf7782017-09-13 18:30:23 +020080 strm = stream_new(cs->conn->owner, &cs->obj_type);
Willy Tarreau5790eb02017-08-28 17:18:36 +020081 if (strm == NULL)
82 return -1;
83
84 task_wakeup(strm->task, TASK_WOKEN_INIT);
85 return 0;
86}
87
Willy Tarreau9903f0e2015-04-04 18:50:31 +020088/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +020089 * handshake, in order to complete initialization of a valid stream. It must be
Willy Tarreau87787ac2017-08-28 16:22:54 +020090 * called with a completley initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +020091 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +020092 * end point is assigned to <origin>, which must be valid. The stream's task
93 * is configured with a nice value inherited from the listener's nice if any.
94 * The task's context is set to the new stream, and its function is set to
95 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +020096 */
Willy Tarreau87787ac2017-08-28 16:22:54 +020097struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +020098{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +020099 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200100 struct task *t;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200101 struct conn_stream *cs = objt_cs(origin);
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200102 struct appctx *appctx = objt_appctx(origin);
Willy Tarreau2542b532012-08-31 16:01:23 +0200103
Willy Tarreaubafbe012017-11-24 17:34:44 +0100104 if (unlikely((s = pool_alloc(pool_head_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200105 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200106
107 /* minimum stream initialization required for an embryonic stream is
108 * fairly low. We need very little to execute L4 ACLs, then we need a
109 * task to make the client-side connection live on its own.
110 * - flags
111 * - stick-entry tracking
112 */
113 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200114 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200115 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200116 s->logs.accept_date = sess->accept_date; /* user-visible date for logging */
117 s->logs.tv_accept = sess->tv_accept; /* corrected date for internal use */
Willy Tarreau590a0512018-09-05 11:56:48 +0200118 s->logs.t_handshake = sess->t_handshake;
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200119 s->logs.t_idle = -1;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200120 tv_zero(&s->logs.tv_request);
121 s->logs.t_queue = -1;
122 s->logs.t_connect = -1;
123 s->logs.t_data = -1;
124 s->logs.t_close = 0;
125 s->logs.bytes_in = s->logs.bytes_out = 0;
Patrick Hemmerffe5e8c2018-05-11 12:52:31 -0400126 s->logs.prx_queue_pos = 0; /* we get the number of pending conns before us */
127 s->logs.srv_queue_pos = 0; /* we will get this number soon */
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200128
129 /* default logging function */
130 s->do_log = strm_log;
131
132 /* default error reporting function, may be changed by analysers */
133 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200134
135 /* Initialise the current rule list pointer to NULL. We are sure that
136 * any rulelist match the NULL pointer.
137 */
138 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200139 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200140
Willy Tarreaua68f7622015-09-21 17:48:24 +0200141 /* Copy SC counters for the stream. We don't touch refcounts because
142 * any reference we have is inherited from the session. Since the stream
143 * doesn't exist without the session, the session's existence guarantees
144 * we don't lose the entry. During the store operation, the stream won't
145 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200146 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200147 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200148
149 s->sess = sess;
150 s->si[0].flags = SI_FL_NONE;
151 s->si[1].flags = SI_FL_ISBACK;
152
Willy Tarreau90a7c032018-09-05 16:21:29 +0200153 s->uniq_id = HA_ATOMIC_XADD(&global.req_count, 1);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200154
Willy Tarreau87b09662015-04-03 00:22:06 +0200155 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200156 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100157
158 LIST_INIT(&s->buffer_wait.list);
159 s->buffer_wait.target = s;
160 s->buffer_wait.wakeup_cb = (int (*)(void *))stream_res_wakeup;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200161
Willy Tarreaue7dff022015-04-03 01:14:29 +0200162 s->flags |= SF_INITIALIZED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200163 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200164
Emeric Brunc60def82017-09-27 14:59:38 +0200165 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200166 goto out_fail_alloc;
167
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200168 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100169 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200170 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200171 t->context = s;
172 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200173 if (sess->listener)
174 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200175
Willy Tarreau87b09662015-04-03 00:22:06 +0200176 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200177 * This changes later when switching rules are executed or
178 * when the default backend is assigned.
179 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200180 s->be = sess->fe;
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200181 s->req.buf = BUF_NULL;
182 s->res.buf = BUF_NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200183 s->req_cap = NULL;
184 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200185
Willy Tarreauebcd4842015-06-19 11:59:02 +0200186 /* Initialise all the variables contexts even if not used.
187 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200188 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200189 vars_init(&s->vars_txn, SCOPE_TXN);
190 vars_init(&s->vars_reqres, SCOPE_REQ);
191
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200192 /* this part should be common with other protocols */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200193 if (si_reset(&s->si[0]) < 0)
194 goto out_fail_alloc;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200195 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100196 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200197
Willy Tarreau984fca92017-12-20 16:31:43 +0100198 if (cs && cs->conn->mux && cs->conn->mux->flags & MX_FL_CLEAN_ABRT)
199 s->si[0].flags |= SI_FL_CLEAN_ABRT;
200
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200201 /* attach the incoming connection to the stream interface now. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200202 if (cs)
203 si_attach_cs(&s->si[0], cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200204 else if (appctx)
205 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200206
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200207 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200208 s->si[0].flags |= SI_FL_INDEP_STR;
209
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200210 /* pre-initialize the other side's stream interface to an INIT state. The
211 * callbacks will be initialized before attempting to connect.
212 */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200213 if (si_reset(&s->si[1]) < 0)
214 goto out_fail_alloc_si1;
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;
Patrick Hemmer268a7072018-05-11 12:52:31 -0400224 s->priority_class = 0;
225 s->priority_offset = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200226
227 /* init store persistence */
228 s->store_count = 0;
229
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100230 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100231 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100232 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaue223e3b2017-11-18 15:39:10 +0100233
234 if (!sess->fe->fe_req_ana) {
235 channel_auto_connect(&s->req); /* don't wait to establish connection */
236 channel_auto_close(&s->req); /* let the producer forward close requests */
237 }
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200238
239 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100240 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100241 s->req.rex = TICK_ETERNITY;
242 s->req.wex = TICK_ETERNITY;
243 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200244
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100245 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100246 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100247 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200248
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200249 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100250 s->req.flags |= CF_NEVER_WAIT;
251 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200252 }
253
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200254 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100255 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100256 s->res.rex = TICK_ETERNITY;
257 s->res.wex = TICK_ETERNITY;
258 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200259
Willy Tarreaueee5b512015-04-03 23:46:31 +0200260 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100261 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100262
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100263 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200264 LIST_ADDQ(&streams, &s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100265 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200266
Christopher Faulet92d36382015-11-05 13:35:03 +0100267 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200268 goto out_fail_accept;
269
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200270 /* finish initialization of the accepted file descriptor */
Olivier Houchard53216e72018-10-10 15:46:36 +0200271 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);
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200289 tasklet_free(s->si[1].wait_event.task);
Willy Tarreaue5f229e2018-10-15 11:08:55 +0200290 LIST_DEL(&s->list);
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200291out_fail_alloc_si1:
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200292 tasklet_free(s->si[0].wait_event.task);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200293 out_fail_alloc:
Willy Tarreaubafbe012017-11-24 17:34:44 +0100294 pool_free(pool_head_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200295 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200296}
297
Willy Tarreaubaaee002006-06-26 02:48:02 +0200298/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200299 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200300 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200301static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200302{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200303 struct session *sess = strm_sess(s);
304 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100305 struct bref *bref, *back;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200306 struct conn_stream *cli_cs = objt_cs(s->si[0].end);
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100307 int must_free_sess;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200308 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100309
Willy Tarreaud0ad4a82018-07-25 11:13:53 +0200310 pendconn_free(s);
Willy Tarreau922a8062008-12-04 09:33:58 +0100311
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100312 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200313 if (s->flags & SF_CURR_SESS) {
314 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200315 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau1e62de62008-11-11 20:20:02 +0100316 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100317 if (may_dequeue_tasks(objt_server(s->target), s->be))
318 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100319 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100320
Willy Tarreau7c669d72008-06-20 15:04:11 +0200321 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200322 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200323 * it should normally be only the same as the one above,
324 * so this should not happen in fact.
325 */
326 sess_change_server(s, NULL);
327 }
328
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100329 if (s->req.pipe)
330 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100331
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100332 if (s->res.pipe)
333 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100334
Willy Tarreaubf883e02014-11-25 21:10:35 +0100335 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100336 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100337 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100338 LIST_DEL(&s->buffer_wait.list);
339 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100340 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100341 }
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200342 if (s->req.buf.size || s->res.buf.size) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100343 b_drop(&s->req.buf);
344 b_drop(&s->res.buf);
Olivier Houchard673867c2018-05-25 16:58:52 +0200345 offer_buffers(NULL, tasks_run_queue);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100346 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200347
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100348 hlua_ctx_destroy(s->hlua);
349 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200350 if (s->txn)
351 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100352
Willy Tarreau1e954912012-10-12 17:50:05 +0200353 /* ensure the client-side transport layer is destroyed */
Willy Tarreau32560732017-10-08 11:33:44 +0200354 if (cli_cs)
355 cs_close(cli_cs);
Willy Tarreau1e954912012-10-12 17:50:05 +0200356
Willy Tarreaua4cda672010-06-06 18:28:49 +0200357 for (i = 0; i < s->store_count; i++) {
358 if (!s->store[i].ts)
359 continue;
360 stksess_free(s->store[i].table, s->store[i].ts);
361 s->store[i].ts = NULL;
362 }
363
Willy Tarreaueee5b512015-04-03 23:46:31 +0200364 if (s->txn) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100365 pool_free(pool_head_hdr_idx, s->txn->hdr_idx.v);
366 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200367 s->txn = NULL;
368 }
369
Christopher Fauletd7c91962015-04-30 11:48:27 +0200370 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100371 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200372
Willy Tarreau92fb9832007-10-16 17:34:28 +0200373 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100374 pool_free(fe->rsp_cap_pool, s->res_cap);
375 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200376 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100377
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200378 /* Cleanup all variable contexts. */
Willy Tarreaucda7f3f2018-10-28 13:44:36 +0100379 if (!LIST_ISEMPTY(&s->vars_txn.head))
380 vars_prune(&s->vars_txn, s->sess, s);
381 if (!LIST_ISEMPTY(&s->vars_reqres.head))
382 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200383
Willy Tarreau87b09662015-04-03 00:22:06 +0200384 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200385
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100386 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100387 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100388 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200389 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100390 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100391 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100392 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200393 if (s->list.n != &streams)
394 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100395 bref->ref = s->list.n;
396 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100397 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100398 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200399
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100400 /* applets do not release session yet */
401 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
402
Olivier Houchard4fdec7a2018-10-11 17:09:14 +0200403
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200404 si_release_endpoint(&s->si[1]);
405 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200406
Olivier Houchardd7bd3e32018-10-18 16:22:02 +0200407 tasklet_free(s->si[0].wait_event.task);
408 tasklet_free(s->si[1].wait_event.task);
409
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100410 if (must_free_sess)
411 session_free(sess);
412
Willy Tarreaubafbe012017-11-24 17:34:44 +0100413 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200414
415 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200416 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100417 pool_flush(pool_head_buffer);
418 pool_flush(pool_head_http_txn);
419 pool_flush(pool_head_hdr_idx);
420 pool_flush(pool_head_requri);
421 pool_flush(pool_head_capture);
422 pool_flush(pool_head_stream);
423 pool_flush(pool_head_session);
424 pool_flush(pool_head_connection);
425 pool_flush(pool_head_pendconn);
426 pool_flush(fe->req_cap_pool);
427 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200428 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200429}
430
Willy Tarreau656859d2014-11-25 19:46:36 +0100431
Willy Tarreau87b09662015-04-03 00:22:06 +0200432/* Allocates a work buffer for stream <s>. It is meant to be called inside
433 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200434 * to work fine, which is the response buffer so that an error message may be
435 * built and returned. Response buffers may be allocated from the reserve, this
436 * is critical to ensure that a response may always flow and will never block a
437 * server from releasing a connection. Returns 0 in case of failure, non-zero
438 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100439 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100440static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100441{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100442 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100443 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100444 LIST_DEL(&s->buffer_wait.list);
445 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100446 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100447 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100448
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200449 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100450 return 1;
451
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100452 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100453 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100454 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100455 return 0;
456}
457
458/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100459 * update() functions. It will try to wake up as many tasks/applets as the
460 * number of buffers that it releases. In practice, most often streams are
461 * blocked on a single buffer, so it makes sense to try to wake two up when two
462 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100463 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200464void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100465{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100466 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100467
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200468 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100469 offer = 1;
470 b_free(&s->req.buf);
471 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200472 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100473 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100474 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100475 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100476
Willy Tarreaubf883e02014-11-25 21:10:35 +0100477 /* if we're certain to have at least 1 buffer available, and there is
478 * someone waiting, we can wake up a waiter and offer them.
479 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100480 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200481 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100482}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200483
484/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200485int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200486{
Willy Tarreau87b09662015-04-03 00:22:06 +0200487 LIST_INIT(&streams);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100488 HA_SPIN_INIT(&streams_lock);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100489 pool_head_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
490 return pool_head_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200491}
492
Willy Tarreau87b09662015-04-03 00:22:06 +0200493void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100494{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200495 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100496 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200497 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200498 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100499 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100500
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100501 bytes = s->req.total - s->logs.bytes_in;
502 s->logs.bytes_in = s->req.total;
503 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200504 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
505 HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100506
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100507 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200508 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200509
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200510 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200511 HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200512
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100513 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200514 struct stkctr *stkctr = &s->stkctr[i];
515
Emeric Brun819fc6f2017-06-13 19:37:32 +0200516 ts = stkctr_entry(stkctr);
517 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200518 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200519 ts = stkctr_entry(stkctr);
520 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200521 continue;
522 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200523
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100524 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200525 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200526 if (ptr1)
527 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200528
Emeric Brun819fc6f2017-06-13 19:37:32 +0200529 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200530 if (ptr2)
531 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200532 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100533 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200534
535 /* If data was modified, we need to touch to re-schedule sync */
536 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200537 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100538 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100539 }
540
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100541 bytes = s->res.total - s->logs.bytes_out;
542 s->logs.bytes_out = s->res.total;
543 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200544 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
545 HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100546
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100547 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200548 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200549
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200550 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200551 HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200552
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100553 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200554 struct stkctr *stkctr = &s->stkctr[i];
555
Emeric Brun819fc6f2017-06-13 19:37:32 +0200556 ts = stkctr_entry(stkctr);
557 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200558 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200559 ts = stkctr_entry(stkctr);
560 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200561 continue;
562 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200563
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100564 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200565 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200566 if (ptr1)
567 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200568
Emeric Brun819fc6f2017-06-13 19:37:32 +0200569 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200570 if (ptr2)
571 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200572 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100573 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200574
575 /* If data was modified, we need to touch to re-schedule sync */
576 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200577 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100578 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100579 }
580}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200581
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100582/* This function is called with (si->state == SI_ST_CON) meaning that a
583 * connection was attempted and that the file descriptor is already allocated.
584 * We must check for establishment, error and abort. Possible output states
585 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
586 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200587 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100588 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200589static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100590{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100591 struct stream_interface *si = &s->si[1];
592 struct channel *req = &s->req;
593 struct channel *rep = &s->res;
Willy Tarreaua553ae92017-10-05 18:52:17 +0200594 struct conn_stream *srv_cs = __objt_cs(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100595
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100596 /* If we got an error, or if nothing happened and the connection timed
597 * out, we must give up. The CER state handler will take care of retry
598 * attempts and error reports.
599 */
600 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800601 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100602 /* Some data were sent past the connection establishment,
603 * so we need to pretend we're established to log correctly
604 * and let later states handle the failure.
605 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100606 si->state = SI_ST_EST;
607 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100608 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100609 return 1;
610 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100611 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100612 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100613
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200614 /* XXX cognet: do we really want to kill the connection here ?
615 * Probably not for multiple streams.
616 */
Willy Tarreaua553ae92017-10-05 18:52:17 +0200617 cs_close(srv_cs);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100618
619 if (si->err_type)
620 return 0;
621
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100622 if (si->flags & SI_FL_ERR)
623 si->err_type = SI_ET_CONN_ERR;
624 else
625 si->err_type = SI_ET_CONN_TO;
626 return 0;
627 }
628
629 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800630 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100631 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200632 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
Willy Tarreauede3d882018-10-24 17:17:56 +0200633 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100634 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100635 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200636 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100637 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100638 if (s->srv_error)
639 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100640 return 1;
641 }
642
643 /* we need to wait a bit more if there was no activity either */
Willy Tarreauede3d882018-10-24 17:17:56 +0200644 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100645 return 1;
646
647 /* OK, this means that a connection succeeded. The caller will be
648 * responsible for handling the transition from CON to EST.
649 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100650 si->state = SI_ST_EST;
651 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100652 return 1;
653}
654
655/* This function is called with (si->state == SI_ST_CER) meaning that a
656 * previous connection attempt has failed and that the file descriptor
657 * has already been released. Possible causes include asynchronous error
658 * notification and time out. Possible output states are SI_ST_CLO when
659 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
660 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
661 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
662 * marked as in error state. It returns 0.
663 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200664static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100665{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100666 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200667 struct conn_stream *cs = objt_cs(si->end);
668 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100669
Willy Tarreau87b09662015-04-03 00:22:06 +0200670 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100671 if (objt_server(s->target)) {
672 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100673
Willy Tarreaue7dff022015-04-03 01:14:29 +0200674 if (s->flags & SF_CURR_SESS) {
675 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200676 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100677 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200678
679 if ((si->flags & SI_FL_ERR) &&
680 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
681 /* We tried to connect to a server which is configured
682 * with "verify required" and which doesn't have the
683 * "verifyhost" directive. The server presented a wrong
684 * certificate (a certificate for an unexpected name),
685 * which implies that we have used SNI in the handshake,
686 * and that the server doesn't have the associated cert
687 * and presented a default one.
688 *
689 * This is a serious enough issue not to retry. It's
690 * especially important because this wrong name might
691 * either be the result of a configuration error, and
692 * retrying will only hammer the server, or is caused
693 * by the use of a wrong SNI value, most likely
694 * provided by the client and we don't want to let the
695 * client provoke retries.
696 */
697 si->conn_retries = 0;
698 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100699 }
700
701 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200702 si->conn_retries--;
703 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100704 if (!si->err_type) {
705 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100706 }
707
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100708 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200709 HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200710 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100711 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100712 if (may_dequeue_tasks(objt_server(s->target), s->be))
713 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100714
715 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200716 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100717 s->req.flags |= CF_WRITE_ERROR;
718 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100719
720 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100721 if (s->srv_error)
722 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100723 return 0;
724 }
725
726 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700727 * retry on another server. By default this redispatch occurs on the
728 * last retry, but if configured we allow redispatches to occur on
729 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200730 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100731 * bit to ignore any persistence cookie. We won't count a retry nor a
732 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200733 * If the connection is not persistent, the balancing algorithm is not
734 * determinist (round robin) and there is more than one active server,
735 * we accept to perform an immediate redispatch without waiting since
736 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100737 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200738 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700739 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200740 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100741 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700742 ((s->be->conn_retries - si->conn_retries) %
743 s->be->redispatch_after == 0)) ||
744 ((s->be->redispatch_after < 0) &&
745 ((s->be->conn_retries - si->conn_retries) %
746 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200747 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700748 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100749 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100750 if (may_dequeue_tasks(objt_server(s->target), s->be))
751 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100752
Willy Tarreaue7dff022015-04-03 01:14:29 +0200753 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100754 si->state = SI_ST_REQ;
755 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100756 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200757 HA_ATOMIC_ADD(&objt_server(s->target)->counters.retries, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200758 HA_ATOMIC_ADD(&s->be->be_counters.retries, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100759 si->state = SI_ST_ASS;
760 }
761
762 if (si->flags & SI_FL_ERR) {
763 /* The error was an asynchronous connection error, and we will
764 * likely have to retry connecting to the same server, most
765 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200766 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100767 */
768
Willy Tarreaub0290662014-06-13 17:04:44 +0200769 int delay = 1000;
770
771 if (s->be->timeout.connect && s->be->timeout.connect < delay)
772 delay = s->be->timeout.connect;
773
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100774 if (!si->err_type)
775 si->err_type = SI_ET_CONN_ERR;
776
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200777 /* only wait when we're retrying on the same server */
778 if (si->state == SI_ST_ASS ||
779 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
780 (s->be->srv_act <= 1)) {
781 si->state = SI_ST_TAR;
782 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
783 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100784 return 0;
785 }
786 return 0;
787}
788
789/*
790 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200791 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200792 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100793 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200794static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100795{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100796 struct stream_interface *si = &s->si[1];
797 struct channel *req = &s->req;
798 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100799
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100800 /* First, centralize the timers information */
801 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
802 si->exp = TICK_ETERNITY;
803
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100804 if (objt_server(s->target))
805 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100806
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100807 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100808 /* if the user wants to log as soon as possible, without counting
809 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200810 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau66425e32018-07-25 06:55:12 +0200811 /* note: no pend_pos here, session is established */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100812 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100813 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100814 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100815 }
816 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100817 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100818 }
819
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100820 if (!(s->flags & SF_TUNNEL)) {
821 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100822
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100823 /* Be sure to filter response headers if the backend is an HTTP proxy
824 * and if there are filters attached to the stream. */
825 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
826 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
827 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100828
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200829 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200830 if (req->flags & CF_WAKE_CONNECT) {
831 req->flags |= CF_WAKE_ONCE;
832 req->flags &= ~CF_WAKE_CONNECT;
833 }
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200834 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200835 /* real connections have timeouts */
836 req->wto = s->be->timeout.server;
837 rep->rto = s->be->timeout.server;
838 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100839 req->wex = TICK_ETERNITY;
840}
841
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700842/* Check if the connection request is in such a state that it can be aborted. */
843static int check_req_may_abort(struct channel *req, struct stream *s)
844{
845 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100846 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100847 (channel_is_empty(req) ||
848 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700849}
850
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100851/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
852 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100853 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
854 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
855 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100856 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200857static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100858{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100859 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100860 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100861 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100862
Christopher Faulet45073512018-07-20 10:16:29 +0200863 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 +0100864 now_ms, __FUNCTION__,
865 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400866 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100867 req->rex, s->res.wex,
868 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200869 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 +0100870
871 if (si->state == SI_ST_ASS) {
872 /* Server assigned to connection request, we have to try to connect now */
873 int conn_err;
874
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700875 /* Before we try to initiate the connection, see if the
876 * request may be aborted instead.
877 */
878 if (check_req_may_abort(req, s)) {
879 si->err_type |= SI_ET_CONN_ABRT;
880 goto abort_connection;
881 }
882
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100883 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100884 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100885
Willy Tarreaue7dff022015-04-03 01:14:29 +0200886 if (conn_err == SF_ERR_NONE) {
Olivier Houchard85b73e92018-10-21 03:18:11 +0200887 struct connection *conn;
888
889 conn = cs_conn(objt_cs(si->end));
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100890 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100891 if (srv)
892 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500893 if (srv)
894 srv_set_sess_last(srv);
Olivier Houchard85b73e92018-10-21 03:18:11 +0200895 /* If we're retrying to connect to the server, and
896 * somebody subscribed to recv or send events, we have
897 * to make sure the polling is active on the new fd.
898 */
899 if (conn->send_wait)
900 conn_xprt_want_send(conn);
901 if (conn->recv_wait)
902 conn_xprt_want_recv(conn);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100903 return;
904 }
905
906 /* We have received a synchronous error. We might have to
907 * abort, retry immediately or redispatch.
908 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200909 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100910 if (!si->err_type) {
911 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100912 }
913
Willy Tarreau827aee92011-03-10 16:55:02 +0100914 if (srv)
915 srv_inc_sess_ctr(srv);
916 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500917 srv_set_sess_last(srv);
918 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200919 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200920 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100921
Willy Tarreau87b09662015-04-03 00:22:06 +0200922 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100923 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100924 if (may_dequeue_tasks(srv, s->be))
925 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100926
927 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200928 si_shutr(si);
929 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100930 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100931
932 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
933
Willy Tarreau66425e32018-07-25 06:55:12 +0200934 /* we may need to know the position in the queue for logging */
935 pendconn_cond_unlink(s->pend_pos);
936
Willy Tarreau87b09662015-04-03 00:22:06 +0200937 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100938 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100939 if (s->srv_error)
940 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100941 return;
942 }
943
944 /* We are facing a retryable error, but we don't want to run a
945 * turn-around now, as the problem is likely a source port
946 * allocation problem, so we want to retry now.
947 */
948 si->state = SI_ST_CER;
949 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100950 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100951 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
952 return;
953 }
954 else if (si->state == SI_ST_QUE) {
955 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +0100956 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100957 /* The connection is not in the queue anymore. Either
958 * we have a server connection slot available and we
959 * go directly to the assigned state, or we need to
960 * load-balance first and go to the INI state.
961 */
962 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200963 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100964 si->state = SI_ST_REQ;
965 else {
966 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
967 si->state = SI_ST_ASS;
968 }
969 return;
970 }
971
972 /* Connection request still in queue... */
973 if (si->flags & SI_FL_EXP) {
974 /* ... and timeout expired */
975 si->exp = TICK_ETERNITY;
976 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +0200977
978 /* we may need to know the position in the queue for logging */
979 pendconn_cond_unlink(s->pend_pos);
980
Willy Tarreau827aee92011-03-10 16:55:02 +0100981 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200982 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200983 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +0200984 si_shutr(si);
985 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100986 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100987 if (!si->err_type)
988 si->err_type = SI_ET_QUEUE_TO;
989 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100990 if (s->srv_error)
991 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100992 return;
993 }
994
995 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700996 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100997 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +0200998
999 /* we may need to know the position in the queue for logging */
1000 pendconn_cond_unlink(s->pend_pos);
1001
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001002 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001003 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001004 }
1005
1006 /* Nothing changed */
1007 return;
1008 }
1009 else if (si->state == SI_ST_TAR) {
1010 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001011 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001012 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001013 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001014 }
1015
1016 if (!(si->flags & SI_FL_EXP))
1017 return; /* still in turn-around */
1018
1019 si->exp = TICK_ETERNITY;
1020
Willy Tarreau87b09662015-04-03 00:22:06 +02001021 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001022 * marked "assigned".
1023 * FIXME: Should we force a redispatch attempt when the server is down ?
1024 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001025 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001026 si->state = SI_ST_ASS;
1027 else
1028 si->state = SI_ST_REQ;
1029 return;
1030 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001031 return;
1032
1033abort_connection:
1034 /* give up */
1035 si->exp = TICK_ETERNITY;
1036 si_shutr(si);
1037 si_shutw(si);
1038 si->state = SI_ST_CLO;
1039 if (s->srv_error)
1040 s->srv_error(s, si);
1041 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001042}
1043
Willy Tarreau87b09662015-04-03 00:22:06 +02001044/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001045 * also counts a failed request if the server state has not reached the request
1046 * stage.
1047 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001048static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001049{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001050 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +09001051 if (s->si[1].state < SI_ST_REQ) {
1052
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001053 HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001054 if (strm_li(s) && strm_li(s)->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +02001055 HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001056
Willy Tarreaue7dff022015-04-03 01:14:29 +02001057 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001058 }
1059 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001060 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +09001061 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001062 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001063 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001064 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001065 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001066 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001067 }
1068}
1069
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001070/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001071 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1072 * a real connection to a server, indicating that a server has been assigned,
1073 * or SI_ST_EST for a successful connection to an applet. It may also return
1074 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001075 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001076static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001077{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001078 struct stream_interface *si = &s->si[1];
1079
Christopher Faulet45073512018-07-20 10:16:29 +02001080 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 +01001081 now_ms, __FUNCTION__,
1082 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001083 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001084 s->req.rex, s->res.wex,
1085 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001086 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 +01001087
1088 if (si->state != SI_ST_REQ)
1089 return;
1090
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001091 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1092 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001093 struct appctx *appctx = objt_appctx(si->end);
1094
1095 if (!appctx || appctx->applet != __objt_applet(s->target))
1096 appctx = stream_int_register_handler(si, objt_applet(s->target));
1097
1098 if (!appctx) {
1099 /* No more memory, let's immediately abort. Force the
1100 * error code to ignore the ERR_LOCAL which is not a
1101 * real error.
1102 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001103 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001104
1105 si_shutr(si);
1106 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001107 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001108 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001109 si->state = SI_ST_CLO;
1110 if (s->srv_error)
1111 s->srv_error(s, si);
1112 return;
1113 }
1114
Willy Tarreauee8269e2017-11-23 17:34:29 +01001115 if (tv_iszero(&s->logs.tv_request))
1116 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001117 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001118 si->state = SI_ST_EST;
1119 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001120 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001121 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001122 return;
1123 }
1124
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001125 /* Try to assign a server */
1126 if (srv_redispatch_connect(s) != 0) {
1127 /* We did not get a server. Either we queued the
1128 * connection request, or we encountered an error.
1129 */
1130 if (si->state == SI_ST_QUE)
1131 return;
1132
1133 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001134 si_shutr(si);
1135 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001136 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001137 if (!si->err_type)
1138 si->err_type = SI_ET_CONN_OTHER;
1139 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001140 if (s->srv_error)
1141 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001142 return;
1143 }
1144
1145 /* The server is assigned */
1146 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1147 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001148 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001149}
1150
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001151/* This function parses the use-service action ruleset. It executes
1152 * the associated ACL and set an applet as a stream or txn final node.
1153 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1154 * consistent state. It returns ACT_RET_STOP in succes case because
1155 * use-service must be a terminal action. Returns ACT_RET_YIELD
1156 * if the initialisation function require more data.
1157 */
1158enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1159 struct session *sess, struct stream *s, int flags)
1160
1161{
1162 struct appctx *appctx;
1163
1164 /* Initialises the applet if it is required. */
1165 if (flags & ACT_FLAG_FIRST) {
1166 /* Register applet. this function schedules the applet. */
1167 s->target = &rule->applet.obj_type;
1168 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1169 return ACT_RET_ERR;
1170
1171 /* Initialise the context. */
1172 appctx = si_appctx(&s->si[1]);
1173 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1174 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001175
1176 /* enable the minimally required analyzers in case of HTTP
1177 * keep-alive to properly handle keep-alive and compression
1178 * on the HTTP response.
1179 */
1180 if (rule->from == ACT_F_HTTP_REQ) {
1181 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1182 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1183 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001184 }
1185 else
1186 appctx = si_appctx(&s->si[1]);
1187
1188 /* Stops the applet sheduling, in case of the init function miss
1189 * some data.
1190 */
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001191 si_applet_stop_get(&s->si[1]);
1192
1193 /* Call initialisation. */
1194 if (rule->applet.init)
1195 switch (rule->applet.init(appctx, px, s)) {
1196 case 0: return ACT_RET_ERR;
1197 case 1: break;
1198 default: return ACT_RET_YIELD;
1199 }
1200
1201 /* Now we can schedule the applet. */
1202 si_applet_cant_get(&s->si[1]);
1203 appctx_wakeup(appctx);
1204
1205 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001206 HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001207
1208 /* The flag SF_ASSIGNED prevent from server assignment. */
1209 s->flags |= SF_ASSIGNED;
1210
1211 return ACT_RET_STOP;
1212}
1213
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001214/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001215 * if appropriate. The default_backend rule is also considered, then the
1216 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001217 * It returns 1 if the processing can continue on next analysers, or zero if it
1218 * either needs more data or wants to immediately abort the request.
1219 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001220static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001221{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001222 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001223 struct session *sess = s->sess;
1224 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001225
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001226 req->analysers &= ~an_bit;
1227 req->analyse_exp = TICK_ETERNITY;
1228
Christopher Faulet45073512018-07-20 10:16:29 +02001229 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 +02001230 now_ms, __FUNCTION__,
1231 s,
1232 req,
1233 req->rex, req->wex,
1234 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001235 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001236 req->analysers);
1237
1238 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001239 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001240 struct switching_rule *rule;
1241
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001242 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001243 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001244
Willy Tarreauf51658d2014-04-23 01:21:56 +02001245 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001246 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001247 ret = acl_pass(ret);
1248 if (rule->cond->pol == ACL_COND_UNLESS)
1249 ret = !ret;
1250 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001251
1252 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001253 /* If the backend name is dynamic, try to resolve the name.
1254 * If we can't resolve the name, or if any error occurs, break
1255 * the loop and fallback to the default backend.
1256 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001257 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001258
1259 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001260 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001261
1262 tmp = alloc_trash_chunk();
1263 if (!tmp)
1264 goto sw_failed;
1265
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001266 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1267 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001268
1269 free_trash_chunk(tmp);
1270 tmp = NULL;
1271
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001272 if (!backend)
1273 break;
1274 }
1275 else
1276 backend = rule->be.backend;
1277
Willy Tarreau87b09662015-04-03 00:22:06 +02001278 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001279 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001280 break;
1281 }
1282 }
1283
1284 /* To ensure correct connection accounting on the backend, we
1285 * have to assign one if it was not set (eg: a listen). This
1286 * measure also takes care of correctly setting the default
1287 * backend if any.
1288 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001289 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001290 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001291 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001292 }
1293
Willy Tarreaufb356202010-08-03 14:02:05 +02001294 /* 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 +02001295 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001296 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1297 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001298 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001299 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001300
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001301 /* 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 +02001302 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001303 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001304 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001305 int ret = 1;
1306
1307 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001308 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 +01001309 ret = acl_pass(ret);
1310 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1311 ret = !ret;
1312 }
1313
1314 if (ret) {
1315 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001316 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001317 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001318 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001319 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001320 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001321 break;
1322 }
1323 }
1324
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001325 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001326
1327 sw_failed:
1328 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001329 channel_abort(&s->req);
1330 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001331
Willy Tarreaue7dff022015-04-03 01:14:29 +02001332 if (!(s->flags & SF_ERR_MASK))
1333 s->flags |= SF_ERR_RESOURCE;
1334 if (!(s->flags & SF_FINST_MASK))
1335 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001336
Willy Tarreaueee5b512015-04-03 23:46:31 +02001337 if (s->txn)
1338 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001339 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001340 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001341 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001342}
1343
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001344/* This stream analyser works on a request. It applies all use-server rules on
1345 * it then returns 1. The data must already be present in the buffer otherwise
1346 * they won't match. It always returns 1.
1347 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001348static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001349{
1350 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001351 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001352 struct server_rule *rule;
1353
Christopher Faulet45073512018-07-20 10:16:29 +02001354 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 +02001355 now_ms, __FUNCTION__,
1356 s,
1357 req,
1358 req->rex, req->wex,
1359 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001360 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001361 req->analysers);
1362
Willy Tarreaue7dff022015-04-03 01:14:29 +02001363 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001364 list_for_each_entry(rule, &px->server_rules, list) {
1365 int ret;
1366
Willy Tarreau192252e2015-04-04 01:47:55 +02001367 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001368 ret = acl_pass(ret);
1369 if (rule->cond->pol == ACL_COND_UNLESS)
1370 ret = !ret;
1371
1372 if (ret) {
1373 struct server *srv = rule->srv.ptr;
1374
Emeric Brun52a91d32017-08-31 14:41:55 +02001375 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001376 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001377 (s->flags & SF_FORCE_PRST)) {
1378 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001379 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001380 break;
1381 }
1382 /* if the server is not UP, let's go on with next rules
1383 * just in case another one is suited.
1384 */
1385 }
1386 }
1387 }
1388
1389 req->analysers &= ~an_bit;
1390 req->analyse_exp = TICK_ETERNITY;
1391 return 1;
1392}
1393
Emeric Brun1d33b292010-01-04 15:47:17 +01001394/* This stream analyser works on a request. It applies all sticking rules on
1395 * it then returns 1. The data must already be present in the buffer otherwise
1396 * they won't match. It always returns 1.
1397 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001398static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001399{
1400 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001401 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001402 struct sticking_rule *rule;
1403
Christopher Faulet45073512018-07-20 10:16:29 +02001404 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 +01001405 now_ms, __FUNCTION__,
1406 s,
1407 req,
1408 req->rex, req->wex,
1409 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001410 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001411 req->analysers);
1412
1413 list_for_each_entry(rule, &px->sticking_rules, list) {
1414 int ret = 1 ;
1415 int i;
1416
Willy Tarreau9667a802013-12-09 12:52:13 +01001417 /* Only the first stick store-request of each table is applied
1418 * and other ones are ignored. The purpose is to allow complex
1419 * configurations which look for multiple entries by decreasing
1420 * order of precision and to stop at the first which matches.
1421 * An example could be a store of the IP address from an HTTP
1422 * header first, then from the source if not found.
1423 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001424 for (i = 0; i < s->store_count; i++) {
1425 if (rule->table.t == s->store[i].table)
1426 break;
1427 }
1428
1429 if (i != s->store_count)
1430 continue;
1431
1432 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001433 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001434 ret = acl_pass(ret);
1435 if (rule->cond->pol == ACL_COND_UNLESS)
1436 ret = !ret;
1437 }
1438
1439 if (ret) {
1440 struct stktable_key *key;
1441
Willy Tarreau192252e2015-04-04 01:47:55 +02001442 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 +01001443 if (!key)
1444 continue;
1445
1446 if (rule->flags & STK_IS_MATCH) {
1447 struct stksess *ts;
1448
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001449 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001450 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001451 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001452 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001453
1454 /* srv found in table */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001455 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001456 ptr = __stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001457 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001458 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun1d33b292010-01-04 15:47:17 +01001459 if (node) {
1460 struct server *srv;
1461
1462 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001463 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001464 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001465 (s->flags & SF_FORCE_PRST)) {
1466 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001467 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001468 }
1469 }
1470 }
Emeric Brun819fc6f2017-06-13 19:37:32 +02001471 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001472 }
1473 }
1474 if (rule->flags & STK_IS_STORE) {
1475 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1476 struct stksess *ts;
1477
1478 ts = stksess_new(rule->table.t, key);
1479 if (ts) {
1480 s->store[s->store_count].table = rule->table.t;
1481 s->store[s->store_count++].ts = ts;
1482 }
1483 }
1484 }
1485 }
1486 }
1487
1488 req->analysers &= ~an_bit;
1489 req->analyse_exp = TICK_ETERNITY;
1490 return 1;
1491}
1492
1493/* This stream analyser works on a response. It applies all store rules on it
1494 * then returns 1. The data must already be present in the buffer otherwise
1495 * they won't match. It always returns 1.
1496 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001497static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001498{
1499 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001500 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001501 struct sticking_rule *rule;
1502 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001503 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001504
Christopher Faulet45073512018-07-20 10:16:29 +02001505 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 +01001506 now_ms, __FUNCTION__,
1507 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001508 rep,
1509 rep->rex, rep->wex,
1510 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001511 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001512 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001513
1514 list_for_each_entry(rule, &px->storersp_rules, list) {
1515 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001516
Willy Tarreau9667a802013-12-09 12:52:13 +01001517 /* Only the first stick store-response of each table is applied
1518 * and other ones are ignored. The purpose is to allow complex
1519 * configurations which look for multiple entries by decreasing
1520 * order of precision and to stop at the first which matches.
1521 * An example could be a store of a set-cookie value, with a
1522 * fallback to a parameter found in a 302 redirect.
1523 *
1524 * The store-response rules are not allowed to override the
1525 * store-request rules for the same table, but they may coexist.
1526 * Thus we can have up to one store-request entry and one store-
1527 * response entry for the same table at any time.
1528 */
1529 for (i = nbreq; i < s->store_count; i++) {
1530 if (rule->table.t == s->store[i].table)
1531 break;
1532 }
1533
1534 /* skip existing entries for this table */
1535 if (i < s->store_count)
1536 continue;
1537
Emeric Brun1d33b292010-01-04 15:47:17 +01001538 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001539 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001540 ret = acl_pass(ret);
1541 if (rule->cond->pol == ACL_COND_UNLESS)
1542 ret = !ret;
1543 }
1544
1545 if (ret) {
1546 struct stktable_key *key;
1547
Willy Tarreau192252e2015-04-04 01:47:55 +02001548 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 +01001549 if (!key)
1550 continue;
1551
Willy Tarreau37e340c2013-12-06 23:05:21 +01001552 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001553 struct stksess *ts;
1554
1555 ts = stksess_new(rule->table.t, key);
1556 if (ts) {
1557 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001558 s->store[s->store_count++].ts = ts;
1559 }
1560 }
1561 }
1562 }
1563
1564 /* process store request and store response */
1565 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001566 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001567 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001568
Willy Tarreauc93cd162014-05-13 15:54:22 +02001569 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001570 stksess_free(s->store[i].table, s->store[i].ts);
1571 s->store[i].ts = NULL;
1572 continue;
1573 }
1574
Emeric Brun819fc6f2017-06-13 19:37:32 +02001575 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1576 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001577 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001578 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001579 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001580 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001581
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001582 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001583 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
1584 stktable_data_cast(ptr, server_id) = __objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001585 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001586 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001587 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001588 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001589
1590 rep->analysers &= ~an_bit;
1591 rep->analyse_exp = TICK_ETERNITY;
1592 return 1;
1593}
1594
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001595/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001596 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001597 */
1598#define UPDATE_ANALYSERS(real, list, back, flag) { \
1599 list = (((list) & ~(flag)) | ~(back)) & (real); \
1600 back = real; \
1601 if (!(list)) \
1602 break; \
1603 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1604 continue; \
1605}
1606
Christopher Fauleta9215b72016-05-11 17:06:28 +02001607/* These 2 following macros call an analayzer for the specified channel if the
1608 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001609 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001610 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001611 * AN_REQ/RES_HTTP_XFER_BODY) */
1612#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1613 { \
1614 if ((list) & (flag)) { \
1615 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001616 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001617 break; \
1618 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1619 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001620 if (!flt_post_analyze((strm), (chn), (flag))) \
1621 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001622 } \
1623 else { \
1624 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1625 break; \
1626 } \
1627 UPDATE_ANALYSERS((chn)->analysers, (list), \
1628 (back), (flag)); \
1629 } \
1630 }
1631
1632#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1633 { \
1634 if ((list) & (flag)) { \
1635 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1636 break; \
1637 UPDATE_ANALYSERS((chn)->analysers, (list), \
1638 (back), (flag)); \
1639 } \
1640 }
1641
Willy Tarreau87b09662015-04-03 00:22:06 +02001642/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001643 * then puts it back to the wait queue in a clean state, or cleans up its
1644 * resources if it must be deleted. Returns in <next> the date the task wants
1645 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1646 * nothing too many times, the request and response buffers flags are monitored
1647 * and each function is called only if at least another function has changed at
1648 * least one flag it is interested in.
1649 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001650struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001651{
Willy Tarreau827aee92011-03-10 16:55:02 +01001652 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001653 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001654 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001655 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001656 unsigned int rq_prod_last, rq_cons_last;
1657 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001658 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001659 struct channel *req, *res;
1660 struct stream_interface *si_f, *si_b;
Olivier Houchard0e367bb2018-09-14 19:41:13 +02001661 struct conn_stream *cs;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001662
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001663 activity[tid].stream++;
1664
Willy Tarreau8f128b42014-11-28 15:07:47 +01001665 req = &s->req;
1666 res = &s->res;
1667
1668 si_f = &s->si[0];
1669 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001670
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001671 /* First, attempt to receive pending data from I/O layers */
Olivier Houchard0e367bb2018-09-14 19:41:13 +02001672 cs = objt_cs(si_f->end);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001673 if (cs && !(si_f->wait_event.wait_reason & SUB_CAN_RECV) &&
1674 (!(si_f->flags & SI_FL_WAIT_ROOM) || !c_size(req)))
1675 si_cs_recv(cs);
1676
Olivier Houchard0e367bb2018-09-14 19:41:13 +02001677 cs = objt_cs(si_b->end);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001678 if (cs && !(si_b->wait_event.wait_reason & SUB_CAN_RECV) &&
1679 (!(si_b->flags & SI_FL_WAIT_ROOM) || !c_size(res)))
Olivier Houchard0e367bb2018-09-14 19:41:13 +02001680 si_cs_recv(cs);
Olivier Houchard53216e72018-10-10 15:46:36 +02001681redo:
Olivier Houchardc2aa7112018-09-11 18:27:21 +02001682
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001683 //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 +01001684 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001685
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001686 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001687 if (s->txn)
1688 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001689
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001690 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001691 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1692 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001693
1694 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001695 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1696 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001697
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001698 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001699 si_f->flags |= SI_FL_DONT_WAKE;
1700 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001701
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001702 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001703 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001704
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001705 /* 1a: Check for low level timeouts if needed. We just set a flag on
1706 * stream interfaces when their timeouts have expired.
1707 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001708 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001709 stream_int_check_timeouts(si_f);
1710 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001711
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001712 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001713 * for future reads or writes. Note: this will also concern upper layers
1714 * but we do not touch any other flag. We must be careful and correctly
1715 * detect state changes when calling them.
1716 */
1717
Willy Tarreau8f128b42014-11-28 15:07:47 +01001718 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001719
Willy Tarreau8f128b42014-11-28 15:07:47 +01001720 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1721 si_b->flags |= SI_FL_NOLINGER;
1722 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001723 }
1724
Willy Tarreau8f128b42014-11-28 15:07:47 +01001725 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1726 if (si_f->flags & SI_FL_NOHALF)
1727 si_f->flags |= SI_FL_NOLINGER;
1728 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001729 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001730
Willy Tarreau8f128b42014-11-28 15:07:47 +01001731 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001732
Willy Tarreau8f128b42014-11-28 15:07:47 +01001733 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1734 si_f->flags |= SI_FL_NOLINGER;
1735 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001736 }
1737
Willy Tarreau8f128b42014-11-28 15:07:47 +01001738 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1739 if (si_b->flags & SI_FL_NOHALF)
1740 si_b->flags |= SI_FL_NOLINGER;
1741 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001742 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001743
Christopher Fauleta00d8172016-11-10 14:58:05 +01001744 if (HAS_FILTERS(s))
1745 flt_stream_check_timeouts(s);
1746
Willy Tarreau798f4322012-11-08 14:49:17 +01001747 /* Once in a while we're woken up because the task expires. But
1748 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001749 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001750 * timeout needs to be refreshed.
1751 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001752 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001753 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Willy Tarreauede3d882018-10-24 17:17:56 +02001754 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001755 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001756 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001757 si_f->flags &= ~SI_FL_DONT_WAKE;
1758 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001759 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001760 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001761 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001762
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001763 /* below we may emit error messages so we have to ensure that we have
1764 * our buffers properly allocated.
1765 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001766 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001767 /* No buffer available, we've been subscribed to the list of
1768 * buffer waiters, let's wait for our turn.
1769 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001770 si_f->flags &= ~SI_FL_DONT_WAKE;
1771 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001772 goto update_exp_and_leave;
1773 }
1774
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001775 /* 1b: check for low-level errors reported at the stream interface.
1776 * First we check if it's a retryable error (in which case we don't
1777 * want to tell the buffer). Otherwise we report the error one level
1778 * upper by setting flags into the buffers. Note that the side towards
1779 * the client cannot have connect (hence retryable) errors. Also, the
1780 * connection setup code must be able to deal with any type of abort.
1781 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001782 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001783 if (unlikely(si_f->flags & SI_FL_ERR)) {
1784 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1785 si_shutr(si_f);
1786 si_shutw(si_f);
1787 stream_int_report_error(si_f);
1788 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001789 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1790 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001791 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001792 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001793 if (!(s->flags & SF_ERR_MASK))
1794 s->flags |= SF_ERR_CLICL;
1795 if (!(s->flags & SF_FINST_MASK))
1796 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001797 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001798 }
1799 }
1800
Willy Tarreau8f128b42014-11-28 15:07:47 +01001801 if (unlikely(si_b->flags & SI_FL_ERR)) {
1802 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1803 si_shutr(si_b);
1804 si_shutw(si_b);
1805 stream_int_report_error(si_b);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001806 HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001807 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001808 HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001809 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001810 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1811 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001812 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001813 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001814 if (!(s->flags & SF_ERR_MASK))
1815 s->flags |= SF_ERR_SRVCL;
1816 if (!(s->flags & SF_FINST_MASK))
1817 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001818 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001819 }
1820 /* note: maybe we should process connection errors here ? */
1821 }
1822
Willy Tarreau8f128b42014-11-28 15:07:47 +01001823 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001824 /* we were trying to establish a connection on the server side,
1825 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1826 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001827 if (unlikely(!sess_update_st_con_tcp(s)))
1828 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001829 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001830 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001831
1832 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1833 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1834 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1835 */
1836 }
1837
Willy Tarreau8f128b42014-11-28 15:07:47 +01001838 rq_prod_last = si_f->state;
1839 rq_cons_last = si_b->state;
1840 rp_cons_last = si_f->state;
1841 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001842
1843 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001844 /* Check for connection closure */
1845
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001846 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001847 "[%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 +01001848 now_ms, __FUNCTION__, __LINE__,
1849 t,
1850 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001851 req, res,
1852 req->rex, res->wex,
1853 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001854 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 +01001855 si_f->err_type, si_b->err_type,
1856 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001857
1858 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001859 if (unlikely(si_f->state == SI_ST_DIS))
1860 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001861
1862 /* When a server-side connection is released, we have to count it and
1863 * check for pending connections on this server.
1864 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001865 if (unlikely(si_b->state == SI_ST_DIS)) {
1866 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001867 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001868 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001869 if (s->flags & SF_CURR_SESS) {
1870 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +02001871 HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001872 }
1873 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001874 if (may_dequeue_tasks(srv, s->be))
1875 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001876 }
1877 }
1878
1879 /*
1880 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1881 * at this point.
1882 */
1883
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001884 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001885 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001886 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1887 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001888 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001889 si_f->state != rq_prod_last ||
1890 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001891 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001892 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001893
Willy Tarreau8f128b42014-11-28 15:07:47 +01001894 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001895 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001896 unsigned int ana_list;
1897 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001898
Willy Tarreau90deb182010-01-07 00:20:41 +01001899 /* it's up to the analysers to stop new connections,
1900 * disable reading or closing. Note: if an analyser
1901 * disables any of these bits, it is responsible for
1902 * enabling them again when it disables itself, so
1903 * that other analysers are called in similar conditions.
1904 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001905 channel_auto_read(req);
1906 channel_auto_connect(req);
1907 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001908
1909 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001910 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001911 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001912 * the list when not needed. Any analyser may return 0
1913 * to break out of the loop, either because of missing
1914 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001915 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001916 * analyser, and we may loop again if other analysers
1917 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001918 *
1919 * We build a list of analysers to run. We evaluate all
1920 * of these analysers in the order of the lower bit to
1921 * the higher bit. This ordering is very important.
1922 * An analyser will often add/remove other analysers,
1923 * including itself. Any changes to itself have no effect
1924 * on the loop. If it removes any other analysers, we
1925 * want those analysers not to be called anymore during
1926 * this loop. If it adds an analyser that is located
1927 * after itself, we want it to be scheduled for being
1928 * processed during the loop. If it adds an analyser
1929 * which is located before it, we want it to switch to
1930 * it immediately, even if it has already been called
1931 * once but removed since.
1932 *
1933 * In order to achieve this, we compare the analyser
1934 * list after the call with a copy of it before the
1935 * call. The work list is fed with analyser bits that
1936 * appeared during the call. Then we compare previous
1937 * work list with the new one, and check the bits that
1938 * appeared. If the lowest of these bits is lower than
1939 * the current bit, it means we have enabled a previous
1940 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001941 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001942
Willy Tarreau8f128b42014-11-28 15:07:47 +01001943 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001944 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001945 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001946 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001947 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1948 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1949 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1950 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1951 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001952 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001953 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1954 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1955 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1956 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1957 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1958 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1959 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001960 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001961 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001962 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1963 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001964 break;
1965 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001966 }
Willy Tarreau84455332009-03-15 22:34:05 +01001967
Willy Tarreau8f128b42014-11-28 15:07:47 +01001968 rq_prod_last = si_f->state;
1969 rq_cons_last = si_b->state;
1970 req->flags &= ~CF_WAKE_ONCE;
1971 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001972
Willy Tarreau8f128b42014-11-28 15:07:47 +01001973 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001974 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001975 }
1976
Willy Tarreau576507f2010-01-07 00:09:04 +01001977 /* we'll monitor the request analysers while parsing the response,
1978 * because some response analysers may indirectly enable new request
1979 * analysers (eg: HTTP keep-alive).
1980 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001981 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01001982
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001983 resync_response:
1984 /* Analyse response */
1985
Willy Tarreau8f128b42014-11-28 15:07:47 +01001986 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
1987 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001988 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001989 si_f->state != rp_cons_last ||
1990 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001991 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001992 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001993
Willy Tarreau8f128b42014-11-28 15:07:47 +01001994 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001995 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001996 unsigned int ana_list;
1997 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001998
Willy Tarreau90deb182010-01-07 00:20:41 +01001999 /* it's up to the analysers to stop disable reading or
2000 * closing. Note: if an analyser disables any of these
2001 * bits, it is responsible for enabling them again when
2002 * it disables itself, so that other analysers are called
2003 * in similar conditions.
2004 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002005 channel_auto_read(res);
2006 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002007
2008 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002009 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002010 * to MSB. The analysers must remove themselves from
2011 * the list when not needed. Any analyser may return 0
2012 * to break out of the loop, either because of missing
2013 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002014 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002015 * analyser, and we may loop again if other analysers
2016 * are added in the middle.
2017 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002018
Willy Tarreau8f128b42014-11-28 15:07:47 +01002019 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002020 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002021 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002022 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
2023 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002024 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
2025 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
2026 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
2027 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 +01002028 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002029 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002030 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
2031 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002032 break;
2033 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002034 }
2035
Willy Tarreau8f128b42014-11-28 15:07:47 +01002036 rp_cons_last = si_f->state;
2037 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02002038 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002039 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002040
Willy Tarreau8f128b42014-11-28 15:07:47 +01002041 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002042 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002043 }
2044
Willy Tarreau576507f2010-01-07 00:09:04 +01002045 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002046 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002047 goto resync_request;
2048
Willy Tarreau8f128b42014-11-28 15:07:47 +01002049 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002050 goto resync_request;
2051
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002052 /* FIXME: here we should call protocol handlers which rely on
2053 * both buffers.
2054 */
2055
2056
2057 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002058 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002059 * we're just in a data phase here since it means we have not
2060 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002061 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002062 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002063 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002064 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002065 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002066 req->analysers = 0;
2067 if (req->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002068 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2069 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002070 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002071 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002072 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002073 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002074 else if (req->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002075 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2076 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002077 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002078 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002079 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002080 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002081 else if (req->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002082 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2083 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002084 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002085 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002086 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002087 }
2088 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002089 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2090 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002091 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002092 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002093 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002094 }
Willy Tarreau84455332009-03-15 22:34:05 +01002095 sess_set_term_flags(s);
2096 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002097 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002098 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002099 res->analysers = 0;
2100 if (res->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002101 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2102 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002103 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002104 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002105 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002106 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002107 else if (res->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002108 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2109 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002110 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002111 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002112 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002113 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002114 else if (res->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002115 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2116 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002117 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002118 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002119 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002120 }
2121 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002122 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2123 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002124 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002125 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002126 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002127 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002128 sess_set_term_flags(s);
2129 }
Willy Tarreau84455332009-03-15 22:34:05 +01002130 }
2131
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002132 /*
2133 * Here we take care of forwarding unhandled data. This also includes
2134 * connection establishments and shutdown requests.
2135 */
2136
2137
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002138 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002139 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002140 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002141 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002142 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002143 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002144 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2145 (si_f->state >= SI_ST_EST) &&
2146 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002147 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002148 * attached to it. If any data are left in, we'll permit them to
2149 * move.
2150 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002151 channel_auto_read(req);
2152 channel_auto_connect(req);
2153 channel_auto_close(req);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002154 c_adv(req, ci_data(req));
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002155
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002156 /* We'll let data flow between the producer (if still connected)
2157 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002158 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002159 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002160 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002161
2162 /* Just in order to support fetching HTTP contents after start
2163 * of forwarding when the HTTP forwarding analyser is not used,
2164 * we simply reset msg->sov so that HTTP rewinding points to the
2165 * headers.
2166 */
2167 if (s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002168 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - co_data(req);
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002169 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002170
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002171 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002172 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2173 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002174 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002175 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2176 (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 +01002177 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002178 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2179 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002180 (req->flags & CF_STREAMER_FAST)))) {
2181 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002182 }
2183
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002184 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002185 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002186
2187 /*
2188 * Now forward all shutdown requests between both sides of the buffer
2189 */
2190
Willy Tarreau520d95e2009-09-19 21:04:57 +02002191 /* first, let's check if the request buffer needs to shutdown(write), which may
2192 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002193 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2194 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002195 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002196 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002197 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002198 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002199 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002200
2201 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002202 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2203 channel_is_empty(req))) {
2204 if (req->flags & CF_READ_ERROR)
2205 si_b->flags |= SI_FL_NOLINGER;
2206 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002207 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002208
2209 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002210 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2211 !req->analysers))
2212 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002213
2214 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002215 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2216 if (si_f->flags & SI_FL_NOHALF)
2217 si_f->flags |= SI_FL_NOLINGER;
2218 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002219 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002220
Willy Tarreau520d95e2009-09-19 21:04:57 +02002221 /* it's possible that an upper layer has requested a connection setup or abort.
2222 * There are 2 situations where we decide to establish a new connection :
2223 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002224 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002225 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002226 if (si_b->state == SI_ST_INI) {
2227 if (!(req->flags & CF_SHUTW)) {
2228 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002229 /* If we have an appctx, there is no connect method, so we
2230 * immediately switch to the connected state, otherwise we
2231 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002232 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002233 si_b->state = SI_ST_REQ; /* new connection requested */
2234 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002235 }
Willy Tarreau73201222009-08-16 18:27:24 +02002236 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002237 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002238 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002239 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2240 channel_shutw_now(req); /* fix buffer flags upon abort */
2241 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002242 }
Willy Tarreau92795622009-03-06 12:51:23 +01002243 }
2244
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002245
2246 /* we may have a pending connection request, or a connection waiting
2247 * for completion.
2248 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002249 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002250
2251 /* prune the request variables and swap to the response variables. */
2252 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreaucda7f3f2018-10-28 13:44:36 +01002253 if (!LIST_ISEMPTY(&s->vars_reqres.head)) {
2254 vars_prune(&s->vars_reqres, s->sess, s);
2255 vars_init(&s->vars_reqres, SCOPE_RES);
2256 }
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002257 }
2258
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002259 do {
2260 /* nb: step 1 might switch from QUE to ASS, but we first want
2261 * to give a chance to step 2 to perform a redirect if needed.
2262 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002263 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002264 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002265 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002266 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002267
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002268 /* applets directly go to the ESTABLISHED state. Similarly,
2269 * servers experience the same fate when their connection
2270 * is reused.
2271 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002272 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002273 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002274
Willy Tarreaub44c8732013-12-31 23:16:50 +01002275 /* Now we can add the server name to a header (if requested) */
2276 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002277 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002278 (s->be->server_id_hdr_name != NULL) &&
2279 (s->be->mode == PR_MODE_HTTP) &&
2280 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002281 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002282 }
2283
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002284 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002285 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002286 http_perform_server_redirect(s, si_b);
2287 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002288 }
2289
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002290 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002291 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002292 goto resync_stream_interface;
2293
Willy Tarreau815a9b22010-07-27 17:15:12 +02002294 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002295 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002296 goto resync_request;
2297
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002298 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002299
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002300 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002301 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002302 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002303 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002304 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002305 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002306 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2307 (si_b->state >= SI_ST_EST) &&
2308 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002309 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002310 * attached to it. If any data are left in, we'll permit them to
2311 * move.
2312 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002313 channel_auto_read(res);
2314 channel_auto_close(res);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002315 c_adv(res, ci_data(res));
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002316
2317 /* We'll let data flow between the producer (if still connected)
2318 * to the consumer.
2319 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002320 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002321 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002322
Willy Tarreau42529c32015-07-09 18:38:57 +02002323 /* Just in order to support fetching HTTP contents after start
2324 * of forwarding when the HTTP forwarding analyser is not used,
2325 * we simply reset msg->sov so that HTTP rewinding points to the
2326 * headers.
2327 */
2328 if (s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002329 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - co_data(res);
Willy Tarreau42529c32015-07-09 18:38:57 +02002330
Willy Tarreauce887fd2012-05-12 12:50:00 +02002331 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002332 * tunnel timeout set, use it now. Note that we must respect
2333 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002334 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002335 if (!req->analysers && s->be->timeout.tunnel) {
2336 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002337 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002338
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002339 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2340 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002341 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2342 res->rto = s->be->timeout.serverfin;
2343 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2344 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002345 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2346 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002347
Willy Tarreau8f128b42014-11-28 15:07:47 +01002348 req->rex = tick_add(now_ms, req->rto);
2349 req->wex = tick_add(now_ms, req->wto);
2350 res->rex = tick_add(now_ms, res->rto);
2351 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002352 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002353 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002354
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002355 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002356 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2357 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002358 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002359 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2360 (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 +01002361 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002362 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2363 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002364 (res->flags & CF_STREAMER_FAST)))) {
2365 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002366 }
2367
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002368 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002369 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002370
2371 /*
2372 * Now forward all shutdown requests between both sides of the buffer
2373 */
2374
2375 /*
2376 * FIXME: this is probably where we should produce error responses.
2377 */
2378
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002379 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002380 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002381 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002382 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002383 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002384
2385 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002386 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2387 channel_is_empty(res))) {
2388 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002389 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002390
2391 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002392 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2393 !res->analysers)
2394 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002395
2396 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002397 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2398 if (si_b->flags & SI_FL_NOHALF)
2399 si_b->flags |= SI_FL_NOLINGER;
2400 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002401 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002402
Willy Tarreau8f128b42014-11-28 15:07:47 +01002403 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002404 goto resync_stream_interface;
2405
Willy Tarreau8f128b42014-11-28 15:07:47 +01002406 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002407 goto resync_request;
2408
Willy Tarreau8f128b42014-11-28 15:07:47 +01002409 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002410 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002411
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002412 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002413 si_f->flags &= ~SI_FL_DONT_WAKE;
2414 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002415
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002416 /* This is needed only when debugging is enabled, to indicate
2417 * client-side or server-side close. Please note that in the unlikely
2418 * event where both sides would close at once, the sequence is reported
2419 * on the server side first.
2420 */
2421 if (unlikely((global.mode & MODE_DEBUG) &&
2422 (!(global.mode & MODE_QUIET) ||
2423 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002424 if (si_b->state == SI_ST_CLO &&
2425 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002426 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002427 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002428 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2429 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002430 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002431 }
2432
Willy Tarreau8f128b42014-11-28 15:07:47 +01002433 if (si_f->state == SI_ST_CLO &&
2434 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002435 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002436 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002437 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2438 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002439 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002440 }
2441 }
2442
Willy Tarreau8f128b42014-11-28 15:07:47 +01002443 if (likely((si_f->state != SI_ST_CLO) ||
2444 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002445
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002446 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002447 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002448
Willy Tarreau85f89012018-10-25 11:06:57 +02002449 si_update(si_f);
2450 si_update(si_b);
Olivier Houchard53216e72018-10-10 15:46:36 +02002451
Willy Tarreau85f89012018-10-25 11:06:57 +02002452 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS ||
2453 (((req->flags ^ rqf_last) | (res->flags ^ rpf_last)) & CF_MASK_ANALYSER))
Olivier Houchard53216e72018-10-10 15:46:36 +02002454 goto redo;
2455
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002456 /* Trick: if a request is being waiting for the server to respond,
2457 * and if we know the server can timeout, we don't want the timeout
2458 * to expire on the client side first, but we're still interested
2459 * in passing data from the client to the server (eg: POST). Thus,
2460 * we can cancel the client's request timeout if the server's
2461 * request timeout is set and the server has not yet sent a response.
2462 */
2463
Willy Tarreau8f128b42014-11-28 15:07:47 +01002464 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2465 (tick_isset(req->wex) || tick_isset(res->rex))) {
2466 req->flags |= CF_READ_NOEXP;
2467 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002468 }
2469
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002470 /* Reset pending events now */
2471 s->pending_events = 0;
2472
Willy Tarreau798f4322012-11-08 14:49:17 +01002473 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002474 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002475 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2476 tick_first(tick_first(req->rex, req->wex),
2477 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002478 if (!req->analysers)
2479 req->analyse_exp = TICK_ETERNITY;
2480
2481 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2482 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2483 req->analyse_exp = tick_add(now_ms, 5000);
2484
2485 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002486
Willy Tarreau9a398be2017-11-10 17:14:23 +01002487 t->expire = tick_first(t->expire, res->analyse_exp);
2488
Willy Tarreau8f128b42014-11-28 15:07:47 +01002489 if (si_f->exp)
2490 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002491
Willy Tarreau8f128b42014-11-28 15:07:47 +01002492 if (si_b->exp)
2493 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002494
Christopher Faulet56803b12017-11-24 16:06:18 +01002495 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002496 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2497 " 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 +01002498 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2499 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002500
2501#ifdef DEBUG_DEV
2502 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002503 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002504 ABORT_NOW();
2505#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002506 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002507 stream_release_buffers(s);
Olivier Houchardc2aa7112018-09-11 18:27:21 +02002508 /* We may have free'd some space in buffers, or have more to send/recv, try again */
Willy Tarreau26c25062009-03-08 09:38:41 +01002509 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002510 }
2511
Willy Tarreaue7dff022015-04-03 01:14:29 +02002512 if (s->flags & SF_BE_ASSIGNED)
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002513 HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002514
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002515 if (unlikely((global.mode & MODE_DEBUG) &&
2516 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002517 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002518 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002519 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2520 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002521 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002522 }
2523
2524 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002525 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002526
Willy Tarreaueee5b512015-04-03 23:46:31 +02002527 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002528 int n;
2529
Willy Tarreaueee5b512015-04-03 23:46:31 +02002530 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002531 if (n < 1 || n > 5)
2532 n = 0;
2533
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002534 if (sess->fe->mode == PR_MODE_HTTP) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002535 HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002536 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002537 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002538 (s->be->mode == PR_MODE_HTTP)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002539 HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2540 HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002541 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002542 }
2543
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002544 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002545 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002546 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002547 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreau66425e32018-07-25 06:55:12 +02002548 /* we may need to know the position in the queue */
2549 pendconn_free(s);
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002550 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002551 }
2552
Willy Tarreau87b09662015-04-03 00:22:06 +02002553 /* update time stats for this stream */
2554 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002555
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002556 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002557 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002558 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002559 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002560 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002561}
2562
Willy Tarreau87b09662015-04-03 00:22:06 +02002563/* Update the stream's backend and server time stats */
2564void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002565{
2566 int t_request;
2567 int t_queue;
2568 int t_connect;
2569 int t_data;
2570 int t_close;
2571 struct server *srv;
2572
2573 t_request = 0;
2574 t_queue = s->logs.t_queue;
2575 t_connect = s->logs.t_connect;
2576 t_close = s->logs.t_close;
2577 t_data = s->logs.t_data;
2578
2579 if (s->be->mode != PR_MODE_HTTP)
2580 t_data = t_connect;
2581
2582 if (t_connect < 0 || t_data < 0)
2583 return;
2584
2585 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2586 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2587
2588 t_data -= t_connect;
2589 t_connect -= t_queue;
2590 t_queue -= t_request;
2591
2592 srv = objt_server(s->target);
2593 if (srv) {
2594 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2595 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2596 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2597 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2598 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002599 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002600 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2601 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2602 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2603 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002604 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002605}
2606
Willy Tarreau7c669d72008-06-20 15:04:11 +02002607/*
2608 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002609 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002610 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002611 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002612 * server.
2613 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002614void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002615{
2616 if (sess->srv_conn == newsrv)
2617 return;
2618
2619 if (sess->srv_conn) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002620 HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002621 HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002622 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2623 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002624 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002625 }
2626
2627 if (newsrv) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002628 HA_ATOMIC_ADD(&newsrv->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002629 HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002630 if (newsrv->proxy->lbprm.server_take_conn)
2631 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002632 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002633 }
2634}
2635
Willy Tarreau84455332009-03-15 22:34:05 +01002636/* Handle server-side errors for default protocols. It is called whenever a a
2637 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002638 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002639 * them. It's installed as ->srv_error for the server-side stream_interface.
2640 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002641void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002642{
2643 int err_type = si->err_type;
2644 int err = 0, fin = 0;
2645
2646 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002647 err = SF_ERR_CLICL;
2648 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002649 }
2650 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002651 err = SF_ERR_CLICL;
2652 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002653 }
2654 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002655 err = SF_ERR_SRVTO;
2656 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002657 }
2658 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002659 err = SF_ERR_SRVCL;
2660 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002661 }
2662 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002663 err = SF_ERR_SRVTO;
2664 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002665 }
2666 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002667 err = SF_ERR_SRVCL;
2668 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002669 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002670 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002671 err = SF_ERR_RESOURCE;
2672 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002673 }
Willy Tarreau84455332009-03-15 22:34:05 +01002674 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002675 err = SF_ERR_INTERNAL;
2676 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002677 }
2678
Willy Tarreaue7dff022015-04-03 01:14:29 +02002679 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002680 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002681 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002682 s->flags |= fin;
2683}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002684
Willy Tarreaue7dff022015-04-03 01:14:29 +02002685/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002686void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002687{
Willy Tarreau87b09662015-04-03 00:22:06 +02002688 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002689 return;
2690
Willy Tarreau87b09662015-04-03 00:22:06 +02002691 channel_shutw_now(&stream->req);
2692 channel_shutr_now(&stream->res);
2693 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002694 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002695 stream->flags |= why;
2696 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002697}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002698
Willy Tarreau8b22a712010-06-18 17:46:06 +02002699/************************************************************************/
2700/* All supported ACL keywords must be declared here. */
2701/************************************************************************/
2702
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002703/* 0=OK, <0=Alert, >0=Warning */
2704static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2705 struct proxy *px, struct act_rule *rule,
2706 char **err)
2707{
2708 struct action_kw *kw;
2709
2710 /* Check if the service name exists. */
2711 if (*(args[*cur_arg]) == 0) {
2712 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002713 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002714 }
2715
2716 /* lookup for keyword corresponding to a service. */
2717 kw = action_lookup(&service_keywords, args[*cur_arg]);
2718 if (!kw) {
2719 memprintf(err, "'%s' unknown service name.", args[1]);
2720 return ACT_RET_PRS_ERR;
2721 }
2722 (*cur_arg)++;
2723
2724 /* executes specific rule parser. */
2725 rule->kw = kw;
2726 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2727 return ACT_RET_PRS_ERR;
2728
2729 /* Register processing function. */
2730 rule->action_ptr = process_use_service;
2731 rule->action = ACT_CUSTOM;
2732
2733 return ACT_RET_PRS_OK;
2734}
2735
2736void service_keywords_register(struct action_kw_list *kw_list)
2737{
2738 LIST_ADDQ(&service_keywords, &kw_list->list);
2739}
2740
William Lallemand4c5b4d52016-11-21 08:51:11 +01002741
2742/* This function dumps a complete stream state onto the stream interface's
2743 * read buffer. The stream has to be set in strm. It returns 0 if the output
2744 * buffer is full and it needs to be called again, otherwise non-zero. It is
2745 * designed to be called from stats_dump_strm_to_buffer() below.
2746 */
2747static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2748{
2749 struct appctx *appctx = __objt_appctx(si->end);
2750 struct tm tm;
2751 extern const char *monthname[12];
2752 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002753 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01002754 struct connection *conn;
2755 struct appctx *tmpctx;
2756
2757 chunk_reset(&trash);
2758
2759 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2760 /* stream changed, no need to go any further */
2761 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002762 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01002763 si_applet_cant_put(si);
2764 return 0;
2765 }
2766 appctx->ctx.sess.uid = 0;
2767 appctx->ctx.sess.section = 0;
2768 return 1;
2769 }
2770
2771 switch (appctx->ctx.sess.section) {
2772 case 0: /* main status of the stream */
2773 appctx->ctx.sess.uid = strm->uniq_id;
2774 appctx->ctx.sess.section = 1;
2775 /* fall through */
2776
2777 case 1:
2778 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2779 chunk_appendf(&trash,
2780 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2781 strm,
2782 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2783 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2784 strm->uniq_id,
2785 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2786
2787 conn = objt_conn(strm_orig(strm));
2788 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2789 case AF_INET:
2790 case AF_INET6:
2791 chunk_appendf(&trash, " source=%s:%d\n",
2792 pn, get_host_port(&conn->addr.from));
2793 break;
2794 case AF_UNIX:
2795 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2796 break;
2797 default:
2798 /* no more information to print right now */
2799 chunk_appendf(&trash, "\n");
2800 break;
2801 }
2802
2803 chunk_appendf(&trash,
2804 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2805 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2806
2807 chunk_appendf(&trash,
2808 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2809 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2810 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2811 strm_li(strm) ? strm_li(strm)->luid : 0);
2812
2813 if (conn)
2814 conn_get_to_addr(conn);
2815
2816 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2817 case AF_INET:
2818 case AF_INET6:
2819 chunk_appendf(&trash, " addr=%s:%d\n",
2820 pn, get_host_port(&conn->addr.to));
2821 break;
2822 case AF_UNIX:
2823 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2824 break;
2825 default:
2826 /* no more information to print right now */
2827 chunk_appendf(&trash, "\n");
2828 break;
2829 }
2830
2831 if (strm->be->cap & PR_CAP_BE)
2832 chunk_appendf(&trash,
2833 " backend=%s (id=%u mode=%s)",
2834 strm->be->id,
2835 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2836 else
2837 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2838
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002839 cs = objt_cs(strm->si[1].end);
2840 conn = cs_conn(cs);
2841
William Lallemand4c5b4d52016-11-21 08:51:11 +01002842 if (conn)
2843 conn_get_from_addr(conn);
2844
2845 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2846 case AF_INET:
2847 case AF_INET6:
2848 chunk_appendf(&trash, " addr=%s:%d\n",
2849 pn, get_host_port(&conn->addr.from));
2850 break;
2851 case AF_UNIX:
2852 chunk_appendf(&trash, " addr=unix\n");
2853 break;
2854 default:
2855 /* no more information to print right now */
2856 chunk_appendf(&trash, "\n");
2857 break;
2858 }
2859
2860 if (strm->be->cap & PR_CAP_BE)
2861 chunk_appendf(&trash,
2862 " server=%s (id=%u)",
2863 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2864 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2865 else
2866 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2867
2868 if (conn)
2869 conn_get_to_addr(conn);
2870
2871 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2872 case AF_INET:
2873 case AF_INET6:
2874 chunk_appendf(&trash, " addr=%s:%d\n",
2875 pn, get_host_port(&conn->addr.to));
2876 break;
2877 case AF_UNIX:
2878 chunk_appendf(&trash, " addr=unix\n");
2879 break;
2880 default:
2881 /* no more information to print right now */
2882 chunk_appendf(&trash, "\n");
2883 break;
2884 }
2885
2886 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002887 " task=%p (state=0x%02x nice=%d calls=%d exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002888 strm->task,
2889 strm->task->state,
2890 strm->task->nice, strm->task->calls,
2891 strm->task->expire ?
2892 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2893 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2894 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01002895 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01002896 task_in_rq(strm->task) ? ", running" : "");
2897
2898 chunk_appendf(&trash,
2899 " age=%s)\n",
2900 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2901
2902 if (strm->txn)
2903 chunk_appendf(&trash,
2904 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2905 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02002906 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 +01002907
2908 chunk_appendf(&trash,
2909 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2910 &strm->si[0],
2911 si_state_str(strm->si[0].state),
2912 strm->si[0].flags,
2913 obj_type_name(strm->si[0].end),
2914 obj_base_ptr(strm->si[0].end),
2915 strm->si[0].exp ?
2916 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2917 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2918 TICKS_TO_MS(1000)) : "<NEVER>",
2919 strm->si[0].err_type);
2920
2921 chunk_appendf(&trash,
2922 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2923 &strm->si[1],
2924 si_state_str(strm->si[1].state),
2925 strm->si[1].flags,
2926 obj_type_name(strm->si[1].end),
2927 obj_base_ptr(strm->si[1].end),
2928 strm->si[1].exp ?
2929 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2930 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2931 TICKS_TO_MS(1000)) : "<NEVER>",
2932 strm->si[1].err_type);
2933
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002934 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
2935 conn = cs->conn;
2936
William Lallemand4c5b4d52016-11-21 08:51:11 +01002937 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002938 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002939 conn,
2940 conn_get_ctrl_name(conn),
2941 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002942 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002943 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002944 obj_type_name(conn->target),
2945 obj_base_ptr(conn->target));
2946
2947 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002948 " 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 +01002949 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002950 conn->handle.fd,
2951 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002952 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002953 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002954 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002955 }
2956 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2957 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002958 " 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 +01002959 tmpctx,
2960 tmpctx->st0,
2961 tmpctx->st1,
2962 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002963 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002964 tmpctx->thread_mask,
2965 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002966 }
2967
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002968 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
2969 conn = cs->conn;
2970
William Lallemand4c5b4d52016-11-21 08:51:11 +01002971 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002972 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002973 conn,
2974 conn_get_ctrl_name(conn),
2975 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002976 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002977 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002978 obj_type_name(conn->target),
2979 obj_base_ptr(conn->target));
2980
2981 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002982 " 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 +01002983 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002984 conn->handle.fd,
2985 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002986 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002987 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002988 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002989 }
2990 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
2991 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002992 " 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 +01002993 tmpctx,
2994 tmpctx->st0,
2995 tmpctx->st1,
2996 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002997 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002998 tmpctx->thread_mask,
2999 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003000 }
3001
3002 chunk_appendf(&trash,
3003 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3004 " an_exp=%s",
3005 &strm->req,
3006 strm->req.flags, strm->req.analysers,
3007 strm->req.pipe ? strm->req.pipe->data : 0,
3008 strm->req.to_forward, strm->req.total,
3009 strm->req.analyse_exp ?
3010 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
3011 TICKS_TO_MS(1000)) : "<NEVER>");
3012
3013 chunk_appendf(&trash,
3014 " rex=%s",
3015 strm->req.rex ?
3016 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
3017 TICKS_TO_MS(1000)) : "<NEVER>");
3018
3019 chunk_appendf(&trash,
3020 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003021 " buf=%p data=%p o=%u p=%u req.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003022 strm->req.wex ?
3023 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
3024 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003025 &strm->req.buf,
3026 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003027 (unsigned int)ci_head_ofs(&strm->req),
Willy Tarreau591d4452018-06-15 17:21:00 +02003028 strm->txn ? strm->txn->req.next : 0, (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003029 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003030
3031 chunk_appendf(&trash,
3032 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3033 " an_exp=%s",
3034 &strm->res,
3035 strm->res.flags, strm->res.analysers,
3036 strm->res.pipe ? strm->res.pipe->data : 0,
3037 strm->res.to_forward, strm->res.total,
3038 strm->res.analyse_exp ?
3039 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
3040 TICKS_TO_MS(1000)) : "<NEVER>");
3041
3042 chunk_appendf(&trash,
3043 " rex=%s",
3044 strm->res.rex ?
3045 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3046 TICKS_TO_MS(1000)) : "<NEVER>");
3047
3048 chunk_appendf(&trash,
3049 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003050 " buf=%p data=%p o=%u p=%u rsp.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003051 strm->res.wex ?
3052 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3053 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003054 &strm->res.buf,
3055 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003056 (unsigned int)ci_head_ofs(&strm->res),
Willy Tarreau591d4452018-06-15 17:21:00 +02003057 strm->txn ? strm->txn->rsp.next : 0, (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003058 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003059
Willy Tarreau06d80a92017-10-19 14:32:15 +02003060 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003061 si_applet_cant_put(si);
3062 return 0;
3063 }
3064
3065 /* use other states to dump the contents */
3066 }
3067 /* end of dump */
3068 appctx->ctx.sess.uid = 0;
3069 appctx->ctx.sess.section = 0;
3070 return 1;
3071}
3072
3073
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003074static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003075{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003076 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3077 return 1;
3078
3079 if (*args[2] && strcmp(args[2], "all") == 0)
3080 appctx->ctx.sess.target = (void *)-1;
3081 else if (*args[2])
3082 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3083 else
3084 appctx->ctx.sess.target = NULL;
3085 appctx->ctx.sess.section = 0; /* start with stream status */
3086 appctx->ctx.sess.pos = 0;
3087
3088 return 0;
3089}
3090
3091/* This function dumps all streams' states onto the stream interface's
3092 * read buffer. It returns 0 if the output buffer is full and it needs
3093 * to be called again, otherwise non-zero. It is designed to be called
3094 * from stats_dump_sess_to_buffer() below.
3095 */
3096static int cli_io_handler_dump_sess(struct appctx *appctx)
3097{
3098 struct stream_interface *si = appctx->owner;
3099 struct connection *conn;
3100
3101 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3102 /* If we're forced to shut down, we might have to remove our
3103 * reference to the last stream being dumped.
3104 */
3105 if (appctx->st2 == STAT_ST_LIST) {
3106 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3107 LIST_DEL(&appctx->ctx.sess.bref.users);
3108 LIST_INIT(&appctx->ctx.sess.bref.users);
3109 }
3110 }
3111 return 1;
3112 }
3113
3114 chunk_reset(&trash);
3115
3116 switch (appctx->st2) {
3117 case STAT_ST_INIT:
3118 /* the function had not been called yet, let's prepare the
3119 * buffer for a response. We initialize the current stream
3120 * pointer to the first in the global list. When a target
3121 * stream is being destroyed, it is responsible for updating
3122 * this pointer. We know we have reached the end when this
3123 * pointer points back to the head of the streams list.
3124 */
3125 LIST_INIT(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003126 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003127 appctx->ctx.sess.bref.ref = streams.n;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003128 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003129 appctx->st2 = STAT_ST_LIST;
3130 /* fall through */
3131
3132 case STAT_ST_LIST:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003133 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003134 /* first, let's detach the back-ref from a possible previous stream */
3135 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3136 LIST_DEL(&appctx->ctx.sess.bref.users);
3137 LIST_INIT(&appctx->ctx.sess.bref.users);
3138 }
3139
3140 /* and start from where we stopped */
3141 while (appctx->ctx.sess.bref.ref != &streams) {
3142 char pn[INET6_ADDRSTRLEN];
3143 struct stream *curr_strm;
3144
3145 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3146
3147 if (appctx->ctx.sess.target) {
3148 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3149 goto next_sess;
3150
3151 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3152 /* call the proper dump() function and return if we're missing space */
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003153 if (!stats_dump_full_strm_to_buffer(si, curr_strm)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003154 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003155 return 0;
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003156 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003157
3158 /* stream dump complete */
3159 LIST_DEL(&appctx->ctx.sess.bref.users);
3160 LIST_INIT(&appctx->ctx.sess.bref.users);
3161 if (appctx->ctx.sess.target != (void *)-1) {
3162 appctx->ctx.sess.target = NULL;
3163 break;
3164 }
3165 else
3166 goto next_sess;
3167 }
3168
3169 chunk_appendf(&trash,
3170 "%p: proto=%s",
3171 curr_strm,
3172 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3173
3174 conn = objt_conn(strm_orig(curr_strm));
3175 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3176 case AF_INET:
3177 case AF_INET6:
3178 chunk_appendf(&trash,
3179 " src=%s:%d fe=%s be=%s srv=%s",
3180 pn,
3181 get_host_port(&conn->addr.from),
3182 strm_fe(curr_strm)->id,
3183 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3184 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3185 );
3186 break;
3187 case AF_UNIX:
3188 chunk_appendf(&trash,
3189 " src=unix:%d fe=%s be=%s srv=%s",
3190 strm_li(curr_strm)->luid,
3191 strm_fe(curr_strm)->id,
3192 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3193 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3194 );
3195 break;
3196 }
3197
3198 chunk_appendf(&trash,
3199 " ts=%02x age=%s calls=%d",
3200 curr_strm->task->state,
3201 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3202 curr_strm->task->calls);
3203
3204 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003205 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003206 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003207 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003208 curr_strm->req.analysers,
3209 curr_strm->req.rex ?
3210 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3211 TICKS_TO_MS(1000)) : "");
3212
3213 chunk_appendf(&trash,
3214 ",wx=%s",
3215 curr_strm->req.wex ?
3216 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3217 TICKS_TO_MS(1000)) : "");
3218
3219 chunk_appendf(&trash,
3220 ",ax=%s]",
3221 curr_strm->req.analyse_exp ?
3222 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3223 TICKS_TO_MS(1000)) : "");
3224
3225 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003226 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003227 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003228 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003229 curr_strm->res.analysers,
3230 curr_strm->res.rex ?
3231 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3232 TICKS_TO_MS(1000)) : "");
3233
3234 chunk_appendf(&trash,
3235 ",wx=%s",
3236 curr_strm->res.wex ?
3237 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3238 TICKS_TO_MS(1000)) : "");
3239
3240 chunk_appendf(&trash,
3241 ",ax=%s]",
3242 curr_strm->res.analyse_exp ?
3243 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3244 TICKS_TO_MS(1000)) : "");
3245
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003246 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003247 chunk_appendf(&trash,
3248 " s0=[%d,%1xh,fd=%d,ex=%s]",
3249 curr_strm->si[0].state,
3250 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003251 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003252 curr_strm->si[0].exp ?
3253 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3254 TICKS_TO_MS(1000)) : "");
3255
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003256 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003257 chunk_appendf(&trash,
3258 " s1=[%d,%1xh,fd=%d,ex=%s]",
3259 curr_strm->si[1].state,
3260 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003261 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003262 curr_strm->si[1].exp ?
3263 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3264 TICKS_TO_MS(1000)) : "");
3265
3266 chunk_appendf(&trash,
3267 " exp=%s",
3268 curr_strm->task->expire ?
3269 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3270 TICKS_TO_MS(1000)) : "");
3271 if (task_in_rq(curr_strm->task))
3272 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3273
3274 chunk_appendf(&trash, "\n");
3275
Willy Tarreau06d80a92017-10-19 14:32:15 +02003276 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003277 /* let's try again later from this stream. We add ourselves into
3278 * this stream's users so that it can remove us upon termination.
3279 */
3280 si_applet_cant_put(si);
3281 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003282 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003283 return 0;
3284 }
3285
3286 next_sess:
3287 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3288 }
3289
3290 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3291 /* specified stream not found */
3292 if (appctx->ctx.sess.section > 0)
3293 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3294 else
3295 chunk_appendf(&trash, "Session not found.\n");
3296
Willy Tarreau06d80a92017-10-19 14:32:15 +02003297 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003298 si_applet_cant_put(si);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003299 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003300 return 0;
3301 }
3302
3303 appctx->ctx.sess.target = NULL;
3304 appctx->ctx.sess.uid = 0;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003305 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003306 return 1;
3307 }
3308
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003309 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003310 /* fall through */
3311
3312 default:
3313 appctx->st2 = STAT_ST_FIN;
3314 return 1;
3315 }
3316}
3317
3318static void cli_release_show_sess(struct appctx *appctx)
3319{
3320 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003321 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003322 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3323 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003324 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003325 }
3326}
3327
Willy Tarreau61b65212016-11-24 11:09:25 +01003328/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003329static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003330{
3331 struct stream *strm, *ptr;
3332
3333 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3334 return 1;
3335
3336 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003337 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003338 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003339 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003340 return 1;
3341 }
3342
3343 ptr = (void *)strtoul(args[2], NULL, 0);
3344
3345 /* first, look for the requested stream in the stream table */
3346 list_for_each_entry(strm, &streams, list) {
3347 if (strm == ptr)
3348 break;
3349 }
3350
3351 /* do we have the stream ? */
3352 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003353 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003354 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003355 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003356 return 1;
3357 }
3358
3359 stream_shutdown(strm, SF_ERR_KILLED);
3360 return 1;
3361}
3362
Willy Tarreau4e46b622016-11-23 16:50:48 +01003363/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003364static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003365{
3366 struct server *sv;
3367 struct stream *strm, *strm_bck;
3368
3369 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3370 return 1;
3371
3372 sv = cli_find_server(appctx, args[3]);
3373 if (!sv)
3374 return 1;
3375
3376 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003377 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003378 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3379 if (strm->srv_conn == sv)
3380 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003381 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003382 return 1;
3383}
3384
William Lallemand4c5b4d52016-11-21 08:51:11 +01003385/* register cli keywords */
3386static struct cli_kw_list cli_kws = {{ },{
3387 { { "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 +01003388 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003389 { { "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 +01003390 {{},}
3391}};
3392
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003393/* main configuration keyword registration. */
3394static struct action_kw_list stream_tcp_keywords = { ILH, {
3395 { "use-service", stream_parse_use_service },
3396 { /* END */ }
3397}};
3398
3399static struct action_kw_list stream_http_keywords = { ILH, {
3400 { "use-service", stream_parse_use_service },
3401 { /* END */ }
3402}};
3403
Willy Tarreau8b22a712010-06-18 17:46:06 +02003404__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003405static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003406{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003407 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3408 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003409 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003410}
3411
Willy Tarreaubaaee002006-06-26 02:48:02 +02003412/*
3413 * Local variables:
3414 * c-indent-level: 8
3415 * c-basic-offset: 8
3416 * End:
3417 */