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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
Willy Tarreau87b09662015-04-03 00:22:06 +02002 * Stream management functions.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003 *
Willy Tarreaud28c3532012-04-19 19:28:33 +02004 * Copyright 2000-2012 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <stdlib.h>
Willy Tarreau81f9aa32010-06-01 17:45:26 +020014#include <unistd.h>
15#include <fcntl.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020016
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020017#include <common/cfgparse.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020018#include <common/config.h>
Willy Tarreau9b28e032012-10-12 23:49:43 +020019#include <common/buffer.h>
Willy Tarreau7c669d72008-06-20 15:04:11 +020020#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020021#include <common/memory.h>
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +020022#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020023
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020024#include <types/applet.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020025#include <types/capture.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010026#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020027#include <types/filters.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010028#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010029#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020030
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020031#include <proto/acl.h>
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020032#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020033#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010034#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020035#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010036#include <proto/checks.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010037#include <proto/cli.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020038#include <proto/connection.h>
William Lallemand9ed62032016-11-21 17:49:11 +010039#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020040#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020041#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020042#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020043#include <proto/frontend.h>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010044#include <proto/hdr_idx.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010045#include <proto/hlua.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020046#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020047#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020048#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020049#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020050#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010051#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010052#include <proto/proto_http.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020053#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020054#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010055#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020056#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010057#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010058#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010059#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010060#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020061#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020062
Willy Tarreaubafbe012017-11-24 17:34:44 +010063struct pool_head *pool_head_stream;
Willy Tarreau87b09662015-04-03 00:22:06 +020064struct list streams;
Christopher Faulet9dcf9b62017-11-13 10:34:01 +010065__decl_hathreads(HA_SPINLOCK_T streams_lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +020066
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020067/* List of all use-service keywords. */
68static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
69
Willy Tarreau5790eb02017-08-28 17:18:36 +020070
71/* Create a new stream for connection <conn>. Return < 0 on error. This is only
72 * valid right after the handshake, before the connection's data layer is
73 * initialized, because it relies on the session to be in conn->owner.
74 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +020075int stream_create_from_cs(struct conn_stream *cs)
Willy Tarreau5790eb02017-08-28 17:18:36 +020076{
77 struct stream *strm;
78
Olivier Houchard9aaf7782017-09-13 18:30:23 +020079 strm = stream_new(cs->conn->owner, &cs->obj_type);
Willy Tarreau5790eb02017-08-28 17:18:36 +020080 if (strm == NULL)
81 return -1;
82
83 task_wakeup(strm->task, TASK_WOKEN_INIT);
84 return 0;
85}
86
Willy Tarreau9903f0e2015-04-04 18:50:31 +020087/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +020088 * handshake, in order to complete initialization of a valid stream. It must be
Willy Tarreau87787ac2017-08-28 16:22:54 +020089 * called with a completley initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +020090 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +020091 * end point is assigned to <origin>, which must be valid. The stream's task
92 * is configured with a nice value inherited from the listener's nice if any.
93 * The task's context is set to the new stream, and its function is set to
94 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +020095 */
Willy Tarreau87787ac2017-08-28 16:22:54 +020096struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +020097{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +020098 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +020099 struct task *t;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200100 struct conn_stream *cs = objt_cs(origin);
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200101 struct appctx *appctx = objt_appctx(origin);
Willy Tarreau2542b532012-08-31 16:01:23 +0200102
Willy Tarreaubafbe012017-11-24 17:34:44 +0100103 if (unlikely((s = pool_alloc(pool_head_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200104 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200105
106 /* minimum stream initialization required for an embryonic stream is
107 * fairly low. We need very little to execute L4 ACLs, then we need a
108 * task to make the client-side connection live on its own.
109 * - flags
110 * - stick-entry tracking
111 */
112 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200113 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200114 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200115 s->logs.accept_date = sess->accept_date; /* user-visible date for logging */
116 s->logs.tv_accept = sess->tv_accept; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200117 /* This function is called just after the handshake, so the handshake duration is
118 * between the accept time and now.
119 */
120 s->logs.t_handshake = tv_ms_elapsed(&sess->tv_accept, &now);
121 s->logs.t_idle = -1;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200122 tv_zero(&s->logs.tv_request);
123 s->logs.t_queue = -1;
124 s->logs.t_connect = -1;
125 s->logs.t_data = -1;
126 s->logs.t_close = 0;
127 s->logs.bytes_in = s->logs.bytes_out = 0;
128 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
129 s->logs.srv_queue_size = 0; /* we will get this number soon */
130
131 /* default logging function */
132 s->do_log = strm_log;
133
134 /* default error reporting function, may be changed by analysers */
135 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200136
137 /* Initialise the current rule list pointer to NULL. We are sure that
138 * any rulelist match the NULL pointer.
139 */
140 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200141 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200142
Willy Tarreaua68f7622015-09-21 17:48:24 +0200143 /* Copy SC counters for the stream. We don't touch refcounts because
144 * any reference we have is inherited from the session. Since the stream
145 * doesn't exist without the session, the session's existence guarantees
146 * we don't lose the entry. During the store operation, the stream won't
147 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200148 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200149 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200150
151 s->sess = sess;
152 s->si[0].flags = SI_FL_NONE;
153 s->si[1].flags = SI_FL_ISBACK;
154
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200155 s->uniq_id = global.req_count++;
156
Willy Tarreau87b09662015-04-03 00:22:06 +0200157 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200158 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100159
160 LIST_INIT(&s->buffer_wait.list);
161 s->buffer_wait.target = s;
162 s->buffer_wait.wakeup_cb = (int (*)(void *))stream_res_wakeup;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200163
Willy Tarreaue7dff022015-04-03 01:14:29 +0200164 s->flags |= SF_INITIALIZED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200165 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200166
Emeric Brunc60def82017-09-27 14:59:38 +0200167 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200168 goto out_fail_alloc;
169
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200170 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100171 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200172 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200173 t->context = s;
174 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200175 if (sess->listener)
176 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200177
Willy Tarreau87b09662015-04-03 00:22:06 +0200178 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200179 * This changes later when switching rules are executed or
180 * when the default backend is assigned.
181 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200182 s->be = sess->fe;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100183 s->req.buf = s->res.buf = NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200184 s->req_cap = NULL;
185 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200186
Willy Tarreauebcd4842015-06-19 11:59:02 +0200187 /* Initialise all the variables contexts even if not used.
188 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200189 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200190 vars_init(&s->vars_txn, SCOPE_TXN);
191 vars_init(&s->vars_reqres, SCOPE_REQ);
192
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200193 /* this part should be common with other protocols */
Willy Tarreau819d3322014-11-28 12:12:34 +0100194 si_reset(&s->si[0]);
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 */
Willy Tarreau819d3322014-11-28 12:12:34 +0100213 si_reset(&s->si[1]);
Hongbo Longe39683c2017-03-10 18:41:51 +0100214 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200215
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200216 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200217 s->si[1].flags |= SI_FL_INDEP_STR;
218
Willy Tarreau87b09662015-04-03 00:22:06 +0200219 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100220 s->target = sess->listener ? sess->listener->default_target : NULL;
221
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200222 s->pend_pos = NULL;
223
224 /* init store persistence */
225 s->store_count = 0;
226
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100227 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100228 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100229 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaue223e3b2017-11-18 15:39:10 +0100230
231 if (!sess->fe->fe_req_ana) {
232 channel_auto_connect(&s->req); /* don't wait to establish connection */
233 channel_auto_close(&s->req); /* let the producer forward close requests */
234 }
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200235
236 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100237 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100238 s->req.rex = TICK_ETERNITY;
239 s->req.wex = TICK_ETERNITY;
240 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200241
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100242 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100243 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100244 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200245
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200246 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100247 s->req.flags |= CF_NEVER_WAIT;
248 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200249 }
250
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200251 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100252 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100253 s->res.rex = TICK_ETERNITY;
254 s->res.wex = TICK_ETERNITY;
255 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200256
Willy Tarreaueee5b512015-04-03 23:46:31 +0200257 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100258 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100259
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100260 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200261 LIST_ADDQ(&streams, &s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100262 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200263
Christopher Faulet92d36382015-11-05 13:35:03 +0100264 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200265 goto out_fail_accept;
266
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200267 /* finish initialization of the accepted file descriptor */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200268 if (cs)
269 cs_want_recv(cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200270 else if (appctx)
Willy Tarreaufe127932015-04-21 19:23:39 +0200271 si_applet_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200272
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200273 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200274 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200275
276 /* it is important not to call the wakeup function directly but to
277 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200278 * priorities to tasks. Using multi thread we must be sure that
279 * stream is fully initialized before calling task_wakeup. So
280 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200281 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200282 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200283
284 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200285 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100286 flt_stream_release(s, 0);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200287 task_free(t);
288 out_fail_alloc:
Willy Tarreau3b246412014-11-25 17:10:33 +0100289 LIST_DEL(&s->list);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100290 pool_free(pool_head_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200291 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200292}
293
Willy Tarreaubaaee002006-06-26 02:48:02 +0200294/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200295 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200296 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200297static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200298{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200299 struct session *sess = strm_sess(s);
300 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100301 struct bref *bref, *back;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200302 struct conn_stream *cli_cs = objt_cs(s->si[0].end);
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100303 int must_free_sess;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200304 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100305
Willy Tarreaubaaee002006-06-26 02:48:02 +0200306 if (s->pend_pos)
307 pendconn_free(s->pend_pos);
Willy Tarreau922a8062008-12-04 09:33:58 +0100308
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100309 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200310 if (s->flags & SF_CURR_SESS) {
311 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200312 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau1e62de62008-11-11 20:20:02 +0100313 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100314 if (may_dequeue_tasks(objt_server(s->target), s->be))
315 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100316 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100317
Willy Tarreau7c669d72008-06-20 15:04:11 +0200318 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200319 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200320 * it should normally be only the same as the one above,
321 * so this should not happen in fact.
322 */
323 sess_change_server(s, NULL);
324 }
325
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100326 if (s->req.pipe)
327 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100328
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100329 if (s->res.pipe)
330 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100331
Willy Tarreaubf883e02014-11-25 21:10:35 +0100332 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100333 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100334 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100335 LIST_DEL(&s->buffer_wait.list);
336 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100337 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100338 }
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100339 if (s->req.buf->size || s->res.buf->size) {
340 b_drop(&s->req.buf);
341 b_drop(&s->res.buf);
Olivier Houchard673867c2018-05-25 16:58:52 +0200342 offer_buffers(NULL, tasks_run_queue);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100343 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200344
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100345 hlua_ctx_destroy(s->hlua);
346 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200347 if (s->txn)
348 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100349
Willy Tarreau1e954912012-10-12 17:50:05 +0200350 /* ensure the client-side transport layer is destroyed */
Willy Tarreau32560732017-10-08 11:33:44 +0200351 if (cli_cs)
352 cs_close(cli_cs);
Willy Tarreau1e954912012-10-12 17:50:05 +0200353
Willy Tarreaua4cda672010-06-06 18:28:49 +0200354 for (i = 0; i < s->store_count; i++) {
355 if (!s->store[i].ts)
356 continue;
357 stksess_free(s->store[i].table, s->store[i].ts);
358 s->store[i].ts = NULL;
359 }
360
Willy Tarreaueee5b512015-04-03 23:46:31 +0200361 if (s->txn) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100362 pool_free(pool_head_hdr_idx, s->txn->hdr_idx.v);
363 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200364 s->txn = NULL;
365 }
366
Christopher Fauletd7c91962015-04-30 11:48:27 +0200367 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100368 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200369
Willy Tarreau92fb9832007-10-16 17:34:28 +0200370 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100371 pool_free(fe->rsp_cap_pool, s->res_cap);
372 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200373 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100374
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200375 /* Cleanup all variable contexts. */
Willy Tarreau6204cd92016-03-10 16:33:04 +0100376 vars_prune(&s->vars_txn, s->sess, s);
377 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200378
Willy Tarreau87b09662015-04-03 00:22:06 +0200379 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200380
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100381 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100382 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100383 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200384 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100385 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100386 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100387 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200388 if (s->list.n != &streams)
389 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100390 bref->ref = s->list.n;
391 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100392 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100393 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200394
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100395 /* applets do not release session yet */
396 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
397
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200398 si_release_endpoint(&s->si[1]);
399 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200400
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100401 if (must_free_sess)
402 session_free(sess);
403
Willy Tarreaubafbe012017-11-24 17:34:44 +0100404 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200405
406 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200407 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100408 pool_flush(pool_head_buffer);
409 pool_flush(pool_head_http_txn);
410 pool_flush(pool_head_hdr_idx);
411 pool_flush(pool_head_requri);
412 pool_flush(pool_head_capture);
413 pool_flush(pool_head_stream);
414 pool_flush(pool_head_session);
415 pool_flush(pool_head_connection);
416 pool_flush(pool_head_pendconn);
417 pool_flush(fe->req_cap_pool);
418 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200419 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200420}
421
Willy Tarreau656859d2014-11-25 19:46:36 +0100422
Willy Tarreau87b09662015-04-03 00:22:06 +0200423/* Allocates a work buffer for stream <s>. It is meant to be called inside
424 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200425 * to work fine, which is the response buffer so that an error message may be
426 * built and returned. Response buffers may be allocated from the reserve, this
427 * is critical to ensure that a response may always flow and will never block a
428 * server from releasing a connection. Returns 0 in case of failure, non-zero
429 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100430 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100431static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100432{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100433 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100434 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100435 LIST_DEL(&s->buffer_wait.list);
436 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100437 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100438 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100439
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200440 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100441 return 1;
442
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_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100445 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100446 return 0;
447}
448
449/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100450 * update() functions. It will try to wake up as many tasks/applets as the
451 * number of buffers that it releases. In practice, most often streams are
452 * blocked on a single buffer, so it makes sense to try to wake two up when two
453 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100454 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200455void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100456{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100457 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100458
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100459 if (s->req.buf->size && buffer_empty(s->req.buf)) {
460 offer = 1;
461 b_free(&s->req.buf);
462 }
463 if (s->res.buf->size && buffer_empty(s->res.buf)) {
464 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100465 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100466 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100467
Willy Tarreaubf883e02014-11-25 21:10:35 +0100468 /* if we're certain to have at least 1 buffer available, and there is
469 * someone waiting, we can wake up a waiter and offer them.
470 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100471 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200472 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100473}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200474
475/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200476int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200477{
Willy Tarreau87b09662015-04-03 00:22:06 +0200478 LIST_INIT(&streams);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100479 HA_SPIN_INIT(&streams_lock);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100480 pool_head_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
481 return pool_head_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200482}
483
Willy Tarreau87b09662015-04-03 00:22:06 +0200484void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100485{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200486 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100487 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200488 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200489 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100490 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100491
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100492 bytes = s->req.total - s->logs.bytes_in;
493 s->logs.bytes_in = s->req.total;
494 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200495 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
496 HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100497
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100498 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200499 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200500
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200501 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200502 HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200503
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100504 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200505 struct stkctr *stkctr = &s->stkctr[i];
506
Emeric Brun819fc6f2017-06-13 19:37:32 +0200507 ts = stkctr_entry(stkctr);
508 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200509 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200510 ts = stkctr_entry(stkctr);
511 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200512 continue;
513 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200514
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100515 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200516 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200517 if (ptr1)
518 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200519
Emeric Brun819fc6f2017-06-13 19:37:32 +0200520 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200521 if (ptr2)
522 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200523 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100524 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200525
526 /* If data was modified, we need to touch to re-schedule sync */
527 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200528 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100529 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100530 }
531
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100532 bytes = s->res.total - s->logs.bytes_out;
533 s->logs.bytes_out = s->res.total;
534 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200535 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
536 HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100537
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100538 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200539 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200540
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200541 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200542 HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200543
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100544 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200545 struct stkctr *stkctr = &s->stkctr[i];
546
Emeric Brun819fc6f2017-06-13 19:37:32 +0200547 ts = stkctr_entry(stkctr);
548 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200549 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200550 ts = stkctr_entry(stkctr);
551 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200552 continue;
553 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200554
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100555 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200556 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200557 if (ptr1)
558 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200559
Emeric Brun819fc6f2017-06-13 19:37:32 +0200560 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200561 if (ptr2)
562 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200563 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100564 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200565
566 /* If data was modified, we need to touch to re-schedule sync */
567 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200568 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100569 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100570 }
571}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200572
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100573/* This function is called with (si->state == SI_ST_CON) meaning that a
574 * connection was attempted and that the file descriptor is already allocated.
575 * We must check for establishment, error and abort. Possible output states
576 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
577 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200578 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100579 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200580static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100581{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100582 struct stream_interface *si = &s->si[1];
583 struct channel *req = &s->req;
584 struct channel *rep = &s->res;
Willy Tarreaua553ae92017-10-05 18:52:17 +0200585 struct conn_stream *srv_cs = __objt_cs(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100586
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100587 /* If we got an error, or if nothing happened and the connection timed
588 * out, we must give up. The CER state handler will take care of retry
589 * attempts and error reports.
590 */
591 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800592 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100593 /* Some data were sent past the connection establishment,
594 * so we need to pretend we're established to log correctly
595 * and let later states handle the failure.
596 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100597 si->state = SI_ST_EST;
598 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100599 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100600 return 1;
601 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100602 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100603 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100604
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200605 /* XXX cognet: do we really want to kill the connection here ?
606 * Probably not for multiple streams.
607 */
Willy Tarreaua553ae92017-10-05 18:52:17 +0200608 cs_close(srv_cs);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100609
610 if (si->err_type)
611 return 0;
612
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100613 if (si->flags & SI_FL_ERR)
614 si->err_type = SI_ET_CONN_ERR;
615 else
616 si->err_type = SI_ET_CONN_TO;
617 return 0;
618 }
619
620 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800621 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100622 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200623 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +0100624 ((!(req->flags & (CF_WRITE_ACTIVITY|CF_WRITE_EVENT)) && channel_is_empty(req)) ||
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100625 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100626 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200627 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100628 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100629 if (s->srv_error)
630 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100631 return 1;
632 }
633
634 /* we need to wait a bit more if there was no activity either */
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +0100635 if (!(req->flags & (CF_WRITE_ACTIVITY|CF_WRITE_EVENT)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100636 return 1;
637
638 /* OK, this means that a connection succeeded. The caller will be
639 * responsible for handling the transition from CON to EST.
640 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100641 si->state = SI_ST_EST;
642 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100643 return 1;
644}
645
646/* This function is called with (si->state == SI_ST_CER) meaning that a
647 * previous connection attempt has failed and that the file descriptor
648 * has already been released. Possible causes include asynchronous error
649 * notification and time out. Possible output states are SI_ST_CLO when
650 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
651 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
652 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
653 * marked as in error state. It returns 0.
654 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200655static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100656{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100657 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200658 struct conn_stream *cs = objt_cs(si->end);
659 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100660
Willy Tarreau87b09662015-04-03 00:22:06 +0200661 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100662 if (objt_server(s->target)) {
663 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100664
Willy Tarreaue7dff022015-04-03 01:14:29 +0200665 if (s->flags & SF_CURR_SESS) {
666 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200667 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100668 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200669
670 if ((si->flags & SI_FL_ERR) &&
671 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
672 /* We tried to connect to a server which is configured
673 * with "verify required" and which doesn't have the
674 * "verifyhost" directive. The server presented a wrong
675 * certificate (a certificate for an unexpected name),
676 * which implies that we have used SNI in the handshake,
677 * and that the server doesn't have the associated cert
678 * and presented a default one.
679 *
680 * This is a serious enough issue not to retry. It's
681 * especially important because this wrong name might
682 * either be the result of a configuration error, and
683 * retrying will only hammer the server, or is caused
684 * by the use of a wrong SNI value, most likely
685 * provided by the client and we don't want to let the
686 * client provoke retries.
687 */
688 si->conn_retries = 0;
689 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100690 }
691
692 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200693 si->conn_retries--;
694 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100695 if (!si->err_type) {
696 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100697 }
698
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100699 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200700 HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200701 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100702 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100703 if (may_dequeue_tasks(objt_server(s->target), s->be))
704 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100705
706 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200707 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100708 s->req.flags |= CF_WRITE_ERROR;
709 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100710
711 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100712 if (s->srv_error)
713 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100714 return 0;
715 }
716
717 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700718 * retry on another server. By default this redispatch occurs on the
719 * last retry, but if configured we allow redispatches to occur on
720 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200721 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100722 * bit to ignore any persistence cookie. We won't count a retry nor a
723 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200724 * If the connection is not persistent, the balancing algorithm is not
725 * determinist (round robin) and there is more than one active server,
726 * we accept to perform an immediate redispatch without waiting since
727 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100728 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200729 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700730 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200731 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100732 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700733 ((s->be->conn_retries - si->conn_retries) %
734 s->be->redispatch_after == 0)) ||
735 ((s->be->redispatch_after < 0) &&
736 ((s->be->conn_retries - si->conn_retries) %
737 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200738 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700739 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100740 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100741 if (may_dequeue_tasks(objt_server(s->target), s->be))
742 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100743
Willy Tarreaue7dff022015-04-03 01:14:29 +0200744 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100745 si->state = SI_ST_REQ;
746 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100747 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200748 HA_ATOMIC_ADD(&objt_server(s->target)->counters.retries, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200749 HA_ATOMIC_ADD(&s->be->be_counters.retries, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100750 si->state = SI_ST_ASS;
751 }
752
753 if (si->flags & SI_FL_ERR) {
754 /* The error was an asynchronous connection error, and we will
755 * likely have to retry connecting to the same server, most
756 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200757 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100758 */
759
Willy Tarreaub0290662014-06-13 17:04:44 +0200760 int delay = 1000;
761
762 if (s->be->timeout.connect && s->be->timeout.connect < delay)
763 delay = s->be->timeout.connect;
764
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100765 if (!si->err_type)
766 si->err_type = SI_ET_CONN_ERR;
767
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200768 /* only wait when we're retrying on the same server */
769 if (si->state == SI_ST_ASS ||
770 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
771 (s->be->srv_act <= 1)) {
772 si->state = SI_ST_TAR;
773 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
774 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100775 return 0;
776 }
777 return 0;
778}
779
780/*
781 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200782 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200783 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100784 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200785static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100786{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100787 struct stream_interface *si = &s->si[1];
788 struct channel *req = &s->req;
789 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100790
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100791 /* First, centralize the timers information */
792 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
793 si->exp = TICK_ETERNITY;
794
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100795 if (objt_server(s->target))
796 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100797
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100798 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100799 /* if the user wants to log as soon as possible, without counting
800 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200801 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100802 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100803 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100804 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100805 }
806 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100807 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100808 }
809
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100810 if (!(s->flags & SF_TUNNEL)) {
811 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100812
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100813 /* Be sure to filter response headers if the backend is an HTTP proxy
814 * and if there are filters attached to the stream. */
815 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
816 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
817 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100818
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200819 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200820 if (req->flags & CF_WAKE_CONNECT) {
821 req->flags |= CF_WAKE_ONCE;
822 req->flags &= ~CF_WAKE_CONNECT;
823 }
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200824 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200825 /* real connections have timeouts */
826 req->wto = s->be->timeout.server;
827 rep->rto = s->be->timeout.server;
828 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100829 req->wex = TICK_ETERNITY;
830}
831
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700832/* Check if the connection request is in such a state that it can be aborted. */
833static int check_req_may_abort(struct channel *req, struct stream *s)
834{
835 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100836 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100837 (channel_is_empty(req) ||
838 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700839}
840
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100841/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
842 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100843 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
844 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
845 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100846 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200847static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100848{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100849 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100850 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100851 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100852
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100853 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%d rqt=%d rph=%d rpt=%d cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100854 now_ms, __FUNCTION__,
855 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400856 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100857 req->rex, s->res.wex,
858 req->flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -0400859 req->buf->i, req->buf->o, s->res.buf->i, s->res.buf->o, s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100860
861 if (si->state == SI_ST_ASS) {
862 /* Server assigned to connection request, we have to try to connect now */
863 int conn_err;
864
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700865 /* Before we try to initiate the connection, see if the
866 * request may be aborted instead.
867 */
868 if (check_req_may_abort(req, s)) {
869 si->err_type |= SI_ET_CONN_ABRT;
870 goto abort_connection;
871 }
872
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100873 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100874 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100875
Willy Tarreaue7dff022015-04-03 01:14:29 +0200876 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100877 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100878 if (srv)
879 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500880 if (srv)
881 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100882 return;
883 }
884
885 /* We have received a synchronous error. We might have to
886 * abort, retry immediately or redispatch.
887 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200888 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100889 if (!si->err_type) {
890 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100891 }
892
Willy Tarreau827aee92011-03-10 16:55:02 +0100893 if (srv)
894 srv_inc_sess_ctr(srv);
895 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500896 srv_set_sess_last(srv);
897 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200898 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200899 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100900
Willy Tarreau87b09662015-04-03 00:22:06 +0200901 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100902 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100903 if (may_dequeue_tasks(srv, s->be))
904 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100905
906 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200907 si_shutr(si);
908 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100909 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100910
911 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
912
Willy Tarreau87b09662015-04-03 00:22:06 +0200913 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100914 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100915 if (s->srv_error)
916 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100917 return;
918 }
919
920 /* We are facing a retryable error, but we don't want to run a
921 * turn-around now, as the problem is likely a source port
922 * allocation problem, so we want to retry now.
923 */
924 si->state = SI_ST_CER;
925 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100926 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100927 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
928 return;
929 }
930 else if (si->state == SI_ST_QUE) {
931 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +0100932 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100933 /* The connection is not in the queue anymore. Either
934 * we have a server connection slot available and we
935 * go directly to the assigned state, or we need to
936 * load-balance first and go to the INI state.
937 */
938 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200939 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100940 si->state = SI_ST_REQ;
941 else {
942 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
943 si->state = SI_ST_ASS;
944 }
945 return;
946 }
947
948 /* Connection request still in queue... */
949 if (si->flags & SI_FL_EXP) {
950 /* ... and timeout expired */
951 si->exp = TICK_ETERNITY;
952 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau827aee92011-03-10 16:55:02 +0100953 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200954 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200955 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +0200956 si_shutr(si);
957 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100958 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100959 if (!si->err_type)
960 si->err_type = SI_ET_QUEUE_TO;
961 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100962 if (s->srv_error)
963 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100964 return;
965 }
966
967 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700968 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100969 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100970 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700971 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100972 }
973
974 /* Nothing changed */
975 return;
976 }
977 else if (si->state == SI_ST_TAR) {
978 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700979 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100980 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700981 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100982 }
983
984 if (!(si->flags & SI_FL_EXP))
985 return; /* still in turn-around */
986
987 si->exp = TICK_ETERNITY;
988
Willy Tarreau87b09662015-04-03 00:22:06 +0200989 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100990 * marked "assigned".
991 * FIXME: Should we force a redispatch attempt when the server is down ?
992 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200993 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100994 si->state = SI_ST_ASS;
995 else
996 si->state = SI_ST_REQ;
997 return;
998 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700999 return;
1000
1001abort_connection:
1002 /* give up */
1003 si->exp = TICK_ETERNITY;
1004 si_shutr(si);
1005 si_shutw(si);
1006 si->state = SI_ST_CLO;
1007 if (s->srv_error)
1008 s->srv_error(s, si);
1009 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001010}
1011
Willy Tarreau87b09662015-04-03 00:22:06 +02001012/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001013 * also counts a failed request if the server state has not reached the request
1014 * stage.
1015 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001016static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001017{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001018 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +09001019 if (s->si[1].state < SI_ST_REQ) {
1020
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001021 HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001022 if (strm_li(s) && strm_li(s)->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +02001023 HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001024
Willy Tarreaue7dff022015-04-03 01:14:29 +02001025 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001026 }
1027 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001028 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +09001029 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001030 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001031 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001032 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001033 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001034 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001035 }
1036}
1037
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001038/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001039 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1040 * a real connection to a server, indicating that a server has been assigned,
1041 * or SI_ST_EST for a successful connection to an applet. It may also return
1042 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001043 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001044static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001045{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001046 struct stream_interface *si = &s->si[1];
1047
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001048 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%d rqt=%d rph=%d rpt=%d cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001049 now_ms, __FUNCTION__,
1050 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001051 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001052 s->req.rex, s->res.wex,
1053 s->req.flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -04001054 s->req.buf->i, s->req.buf->o, s->res.buf->i, s->res.buf->o, s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001055
1056 if (si->state != SI_ST_REQ)
1057 return;
1058
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001059 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1060 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001061 struct appctx *appctx = objt_appctx(si->end);
1062
1063 if (!appctx || appctx->applet != __objt_applet(s->target))
1064 appctx = stream_int_register_handler(si, objt_applet(s->target));
1065
1066 if (!appctx) {
1067 /* No more memory, let's immediately abort. Force the
1068 * error code to ignore the ERR_LOCAL which is not a
1069 * real error.
1070 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001071 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001072
1073 si_shutr(si);
1074 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001075 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001076 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001077 si->state = SI_ST_CLO;
1078 if (s->srv_error)
1079 s->srv_error(s, si);
1080 return;
1081 }
1082
Willy Tarreauee8269e2017-11-23 17:34:29 +01001083 if (tv_iszero(&s->logs.tv_request))
1084 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001085 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001086 si->state = SI_ST_EST;
1087 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001088 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001089 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001090 return;
1091 }
1092
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001093 /* Try to assign a server */
1094 if (srv_redispatch_connect(s) != 0) {
1095 /* We did not get a server. Either we queued the
1096 * connection request, or we encountered an error.
1097 */
1098 if (si->state == SI_ST_QUE)
1099 return;
1100
1101 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001102 si_shutr(si);
1103 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001104 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001105 if (!si->err_type)
1106 si->err_type = SI_ET_CONN_OTHER;
1107 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001108 if (s->srv_error)
1109 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001110 return;
1111 }
1112
1113 /* The server is assigned */
1114 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1115 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001116 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001117}
1118
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001119/* This function parses the use-service action ruleset. It executes
1120 * the associated ACL and set an applet as a stream or txn final node.
1121 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1122 * consistent state. It returns ACT_RET_STOP in succes case because
1123 * use-service must be a terminal action. Returns ACT_RET_YIELD
1124 * if the initialisation function require more data.
1125 */
1126enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1127 struct session *sess, struct stream *s, int flags)
1128
1129{
1130 struct appctx *appctx;
1131
1132 /* Initialises the applet if it is required. */
1133 if (flags & ACT_FLAG_FIRST) {
1134 /* Register applet. this function schedules the applet. */
1135 s->target = &rule->applet.obj_type;
1136 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1137 return ACT_RET_ERR;
1138
1139 /* Initialise the context. */
1140 appctx = si_appctx(&s->si[1]);
1141 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1142 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001143
1144 /* enable the minimally required analyzers in case of HTTP
1145 * keep-alive to properly handle keep-alive and compression
1146 * on the HTTP response.
1147 */
1148 if (rule->from == ACT_F_HTTP_REQ) {
1149 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1150 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1151 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001152 }
1153 else
1154 appctx = si_appctx(&s->si[1]);
1155
1156 /* Stops the applet sheduling, in case of the init function miss
1157 * some data.
1158 */
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001159 si_applet_stop_get(&s->si[1]);
1160
1161 /* Call initialisation. */
1162 if (rule->applet.init)
1163 switch (rule->applet.init(appctx, px, s)) {
1164 case 0: return ACT_RET_ERR;
1165 case 1: break;
1166 default: return ACT_RET_YIELD;
1167 }
1168
1169 /* Now we can schedule the applet. */
1170 si_applet_cant_get(&s->si[1]);
1171 appctx_wakeup(appctx);
1172
1173 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001174 HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001175
1176 /* The flag SF_ASSIGNED prevent from server assignment. */
1177 s->flags |= SF_ASSIGNED;
1178
1179 return ACT_RET_STOP;
1180}
1181
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001182/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001183 * if appropriate. The default_backend rule is also considered, then the
1184 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001185 * It returns 1 if the processing can continue on next analysers, or zero if it
1186 * either needs more data or wants to immediately abort the request.
1187 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001188static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001189{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001190 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001191 struct session *sess = s->sess;
1192 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001193
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001194 req->analysers &= ~an_bit;
1195 req->analyse_exp = TICK_ETERNITY;
1196
Willy Tarreau87b09662015-04-03 00:22:06 +02001197 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001198 now_ms, __FUNCTION__,
1199 s,
1200 req,
1201 req->rex, req->wex,
1202 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001203 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001204 req->analysers);
1205
1206 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001207 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001208 struct switching_rule *rule;
1209
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001210 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001211 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001212
Willy Tarreauf51658d2014-04-23 01:21:56 +02001213 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001214 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001215 ret = acl_pass(ret);
1216 if (rule->cond->pol == ACL_COND_UNLESS)
1217 ret = !ret;
1218 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001219
1220 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001221 /* If the backend name is dynamic, try to resolve the name.
1222 * If we can't resolve the name, or if any error occurs, break
1223 * the loop and fallback to the default backend.
1224 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001225 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001226
1227 if (rule->dynamic) {
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001228 struct chunk *tmp;
1229
1230 tmp = alloc_trash_chunk();
1231 if (!tmp)
1232 goto sw_failed;
1233
1234 if (build_logline(s, tmp->str, tmp->size, &rule->be.expr))
1235 backend = proxy_be_by_name(tmp->str);
1236
1237 free_trash_chunk(tmp);
1238 tmp = NULL;
1239
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001240 if (!backend)
1241 break;
1242 }
1243 else
1244 backend = rule->be.backend;
1245
Willy Tarreau87b09662015-04-03 00:22:06 +02001246 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001247 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001248 break;
1249 }
1250 }
1251
1252 /* To ensure correct connection accounting on the backend, we
1253 * have to assign one if it was not set (eg: a listen). This
1254 * measure also takes care of correctly setting the default
1255 * backend if any.
1256 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001257 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001258 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001259 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001260 }
1261
Willy Tarreaufb356202010-08-03 14:02:05 +02001262 /* 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 +02001263 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001264 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1265 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001266 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001267 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001268
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001269 /* 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 +02001270 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001271 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001272 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001273 int ret = 1;
1274
1275 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001276 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 +01001277 ret = acl_pass(ret);
1278 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1279 ret = !ret;
1280 }
1281
1282 if (ret) {
1283 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001284 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001285 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001286 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001287 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001288 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001289 break;
1290 }
1291 }
1292
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001293 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001294
1295 sw_failed:
1296 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001297 channel_abort(&s->req);
1298 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001299
Willy Tarreaue7dff022015-04-03 01:14:29 +02001300 if (!(s->flags & SF_ERR_MASK))
1301 s->flags |= SF_ERR_RESOURCE;
1302 if (!(s->flags & SF_FINST_MASK))
1303 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001304
Willy Tarreaueee5b512015-04-03 23:46:31 +02001305 if (s->txn)
1306 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001307 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001308 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001309 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001310}
1311
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001312/* This stream analyser works on a request. It applies all use-server rules on
1313 * it then returns 1. The data must already be present in the buffer otherwise
1314 * they won't match. It always returns 1.
1315 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001316static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001317{
1318 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001319 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001320 struct server_rule *rule;
1321
Willy Tarreau87b09662015-04-03 00:22:06 +02001322 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001323 now_ms, __FUNCTION__,
1324 s,
1325 req,
1326 req->rex, req->wex,
1327 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001328 req->buf->i + req->buf->o,
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001329 req->analysers);
1330
Willy Tarreaue7dff022015-04-03 01:14:29 +02001331 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001332 list_for_each_entry(rule, &px->server_rules, list) {
1333 int ret;
1334
Willy Tarreau192252e2015-04-04 01:47:55 +02001335 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001336 ret = acl_pass(ret);
1337 if (rule->cond->pol == ACL_COND_UNLESS)
1338 ret = !ret;
1339
1340 if (ret) {
1341 struct server *srv = rule->srv.ptr;
1342
Emeric Brun52a91d32017-08-31 14:41:55 +02001343 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001344 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001345 (s->flags & SF_FORCE_PRST)) {
1346 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001347 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001348 break;
1349 }
1350 /* if the server is not UP, let's go on with next rules
1351 * just in case another one is suited.
1352 */
1353 }
1354 }
1355 }
1356
1357 req->analysers &= ~an_bit;
1358 req->analyse_exp = TICK_ETERNITY;
1359 return 1;
1360}
1361
Emeric Brun1d33b292010-01-04 15:47:17 +01001362/* This stream analyser works on a request. It applies all sticking rules on
1363 * it then returns 1. The data must already be present in the buffer otherwise
1364 * they won't match. It always returns 1.
1365 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001366static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001367{
1368 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001369 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001370 struct sticking_rule *rule;
1371
Willy Tarreau87b09662015-04-03 00:22:06 +02001372 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001373 now_ms, __FUNCTION__,
1374 s,
1375 req,
1376 req->rex, req->wex,
1377 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001378 req->buf->i,
Emeric Brun1d33b292010-01-04 15:47:17 +01001379 req->analysers);
1380
1381 list_for_each_entry(rule, &px->sticking_rules, list) {
1382 int ret = 1 ;
1383 int i;
1384
Willy Tarreau9667a802013-12-09 12:52:13 +01001385 /* Only the first stick store-request of each table is applied
1386 * and other ones are ignored. The purpose is to allow complex
1387 * configurations which look for multiple entries by decreasing
1388 * order of precision and to stop at the first which matches.
1389 * An example could be a store of the IP address from an HTTP
1390 * header first, then from the source if not found.
1391 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001392 for (i = 0; i < s->store_count; i++) {
1393 if (rule->table.t == s->store[i].table)
1394 break;
1395 }
1396
1397 if (i != s->store_count)
1398 continue;
1399
1400 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001401 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001402 ret = acl_pass(ret);
1403 if (rule->cond->pol == ACL_COND_UNLESS)
1404 ret = !ret;
1405 }
1406
1407 if (ret) {
1408 struct stktable_key *key;
1409
Willy Tarreau192252e2015-04-04 01:47:55 +02001410 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 +01001411 if (!key)
1412 continue;
1413
1414 if (rule->flags & STK_IS_MATCH) {
1415 struct stksess *ts;
1416
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001417 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001418 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001419 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001420 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001421
1422 /* srv found in table */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001423 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001424 ptr = stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
1425 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001426 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun1d33b292010-01-04 15:47:17 +01001427 if (node) {
1428 struct server *srv;
1429
1430 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001431 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001432 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001433 (s->flags & SF_FORCE_PRST)) {
1434 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001435 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001436 }
1437 }
1438 }
Emeric Brun819fc6f2017-06-13 19:37:32 +02001439 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001440 }
1441 }
1442 if (rule->flags & STK_IS_STORE) {
1443 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1444 struct stksess *ts;
1445
1446 ts = stksess_new(rule->table.t, key);
1447 if (ts) {
1448 s->store[s->store_count].table = rule->table.t;
1449 s->store[s->store_count++].ts = ts;
1450 }
1451 }
1452 }
1453 }
1454 }
1455
1456 req->analysers &= ~an_bit;
1457 req->analyse_exp = TICK_ETERNITY;
1458 return 1;
1459}
1460
1461/* This stream analyser works on a response. It applies all store rules on it
1462 * then returns 1. The data must already be present in the buffer otherwise
1463 * they won't match. It always returns 1.
1464 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001465static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001466{
1467 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001468 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001469 struct sticking_rule *rule;
1470 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001471 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001472
Willy Tarreau87b09662015-04-03 00:22:06 +02001473 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001474 now_ms, __FUNCTION__,
1475 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001476 rep,
1477 rep->rex, rep->wex,
1478 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001479 rep->buf->i,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001480 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001481
1482 list_for_each_entry(rule, &px->storersp_rules, list) {
1483 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001484
Willy Tarreau9667a802013-12-09 12:52:13 +01001485 /* Only the first stick store-response of each table is applied
1486 * and other ones are ignored. The purpose is to allow complex
1487 * configurations which look for multiple entries by decreasing
1488 * order of precision and to stop at the first which matches.
1489 * An example could be a store of a set-cookie value, with a
1490 * fallback to a parameter found in a 302 redirect.
1491 *
1492 * The store-response rules are not allowed to override the
1493 * store-request rules for the same table, but they may coexist.
1494 * Thus we can have up to one store-request entry and one store-
1495 * response entry for the same table at any time.
1496 */
1497 for (i = nbreq; i < s->store_count; i++) {
1498 if (rule->table.t == s->store[i].table)
1499 break;
1500 }
1501
1502 /* skip existing entries for this table */
1503 if (i < s->store_count)
1504 continue;
1505
Emeric Brun1d33b292010-01-04 15:47:17 +01001506 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001507 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001508 ret = acl_pass(ret);
1509 if (rule->cond->pol == ACL_COND_UNLESS)
1510 ret = !ret;
1511 }
1512
1513 if (ret) {
1514 struct stktable_key *key;
1515
Willy Tarreau192252e2015-04-04 01:47:55 +02001516 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 +01001517 if (!key)
1518 continue;
1519
Willy Tarreau37e340c2013-12-06 23:05:21 +01001520 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001521 struct stksess *ts;
1522
1523 ts = stksess_new(rule->table.t, key);
1524 if (ts) {
1525 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001526 s->store[s->store_count++].ts = ts;
1527 }
1528 }
1529 }
1530 }
1531
1532 /* process store request and store response */
1533 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001534 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001535 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001536
Willy Tarreauc93cd162014-05-13 15:54:22 +02001537 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001538 stksess_free(s->store[i].table, s->store[i].ts);
1539 s->store[i].ts = NULL;
1540 continue;
1541 }
1542
Emeric Brun819fc6f2017-06-13 19:37:32 +02001543 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1544 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001545 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001546 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001547 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001548 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001549
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001550 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001551 ptr = stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001552 stktable_data_cast(ptr, server_id) = objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001553 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001554 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001555 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001556 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001557
1558 rep->analysers &= ~an_bit;
1559 rep->analyse_exp = TICK_ETERNITY;
1560 return 1;
1561}
1562
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001563/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001564 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001565 */
1566#define UPDATE_ANALYSERS(real, list, back, flag) { \
1567 list = (((list) & ~(flag)) | ~(back)) & (real); \
1568 back = real; \
1569 if (!(list)) \
1570 break; \
1571 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1572 continue; \
1573}
1574
Christopher Fauleta9215b72016-05-11 17:06:28 +02001575/* These 2 following macros call an analayzer for the specified channel if the
1576 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001577 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001578 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001579 * AN_REQ/RES_HTTP_XFER_BODY) */
1580#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1581 { \
1582 if ((list) & (flag)) { \
1583 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001584 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001585 break; \
1586 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1587 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001588 if (!flt_post_analyze((strm), (chn), (flag))) \
1589 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001590 } \
1591 else { \
1592 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1593 break; \
1594 } \
1595 UPDATE_ANALYSERS((chn)->analysers, (list), \
1596 (back), (flag)); \
1597 } \
1598 }
1599
1600#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1601 { \
1602 if ((list) & (flag)) { \
1603 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1604 break; \
1605 UPDATE_ANALYSERS((chn)->analysers, (list), \
1606 (back), (flag)); \
1607 } \
1608 }
1609
Willy Tarreau87b09662015-04-03 00:22:06 +02001610/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001611 * then puts it back to the wait queue in a clean state, or cleans up its
1612 * resources if it must be deleted. Returns in <next> the date the task wants
1613 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1614 * nothing too many times, the request and response buffers flags are monitored
1615 * and each function is called only if at least another function has changed at
1616 * least one flag it is interested in.
1617 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001618struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001619{
Willy Tarreau827aee92011-03-10 16:55:02 +01001620 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001621 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001622 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001623 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001624 unsigned int rq_prod_last, rq_cons_last;
1625 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001626 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001627 struct channel *req, *res;
1628 struct stream_interface *si_f, *si_b;
1629
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001630 activity[tid].stream++;
1631
Willy Tarreau8f128b42014-11-28 15:07:47 +01001632 req = &s->req;
1633 res = &s->res;
1634
1635 si_f = &s->si[0];
1636 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001637
1638 //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 +01001639 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001640
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001641 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001642 if (s->txn)
1643 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001644
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001645 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001646 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1647 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001648
1649 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001650 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1651 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001652
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001653 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001654 si_f->flags |= SI_FL_DONT_WAKE;
1655 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001656
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001657 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001658 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001659
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001660 /* 1a: Check for low level timeouts if needed. We just set a flag on
1661 * stream interfaces when their timeouts have expired.
1662 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001663 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001664 stream_int_check_timeouts(si_f);
1665 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001666
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001667 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001668 * for future reads or writes. Note: this will also concern upper layers
1669 * but we do not touch any other flag. We must be careful and correctly
1670 * detect state changes when calling them.
1671 */
1672
Willy Tarreau8f128b42014-11-28 15:07:47 +01001673 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001674
Willy Tarreau8f128b42014-11-28 15:07:47 +01001675 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1676 si_b->flags |= SI_FL_NOLINGER;
1677 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001678 }
1679
Willy Tarreau8f128b42014-11-28 15:07:47 +01001680 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1681 if (si_f->flags & SI_FL_NOHALF)
1682 si_f->flags |= SI_FL_NOLINGER;
1683 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001684 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001685
Willy Tarreau8f128b42014-11-28 15:07:47 +01001686 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001687
Willy Tarreau8f128b42014-11-28 15:07:47 +01001688 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1689 si_f->flags |= SI_FL_NOLINGER;
1690 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001691 }
1692
Willy Tarreau8f128b42014-11-28 15:07:47 +01001693 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1694 if (si_b->flags & SI_FL_NOHALF)
1695 si_b->flags |= SI_FL_NOLINGER;
1696 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001697 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001698
Christopher Fauleta00d8172016-11-10 14:58:05 +01001699 if (HAS_FILTERS(s))
1700 flt_stream_check_timeouts(s);
1701
Willy Tarreau798f4322012-11-08 14:49:17 +01001702 /* Once in a while we're woken up because the task expires. But
1703 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001704 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001705 * timeout needs to be refreshed.
1706 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001707 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001708 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +01001709 CF_WRITE_ACTIVITY|CF_WRITE_EVENT|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001710 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001711 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001712 si_f->flags &= ~SI_FL_DONT_WAKE;
1713 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001714 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001715 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001716 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001717
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001718 /* below we may emit error messages so we have to ensure that we have
1719 * our buffers properly allocated.
1720 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001721 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001722 /* No buffer available, we've been subscribed to the list of
1723 * buffer waiters, let's wait for our turn.
1724 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001725 si_f->flags &= ~SI_FL_DONT_WAKE;
1726 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001727 goto update_exp_and_leave;
1728 }
1729
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001730 /* 1b: check for low-level errors reported at the stream interface.
1731 * First we check if it's a retryable error (in which case we don't
1732 * want to tell the buffer). Otherwise we report the error one level
1733 * upper by setting flags into the buffers. Note that the side towards
1734 * the client cannot have connect (hence retryable) errors. Also, the
1735 * connection setup code must be able to deal with any type of abort.
1736 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001737 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001738 if (unlikely(si_f->flags & SI_FL_ERR)) {
1739 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1740 si_shutr(si_f);
1741 si_shutw(si_f);
1742 stream_int_report_error(si_f);
1743 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001744 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1745 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001746 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001747 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001748 if (!(s->flags & SF_ERR_MASK))
1749 s->flags |= SF_ERR_CLICL;
1750 if (!(s->flags & SF_FINST_MASK))
1751 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001752 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001753 }
1754 }
1755
Willy Tarreau8f128b42014-11-28 15:07:47 +01001756 if (unlikely(si_b->flags & SI_FL_ERR)) {
1757 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1758 si_shutr(si_b);
1759 si_shutw(si_b);
1760 stream_int_report_error(si_b);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001761 HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001762 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001763 HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001764 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001765 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1766 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001767 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001768 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001769 if (!(s->flags & SF_ERR_MASK))
1770 s->flags |= SF_ERR_SRVCL;
1771 if (!(s->flags & SF_FINST_MASK))
1772 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001773 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001774 }
1775 /* note: maybe we should process connection errors here ? */
1776 }
1777
Willy Tarreau8f128b42014-11-28 15:07:47 +01001778 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001779 /* we were trying to establish a connection on the server side,
1780 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1781 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001782 if (unlikely(!sess_update_st_con_tcp(s)))
1783 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001784 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001785 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001786
1787 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1788 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1789 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1790 */
1791 }
1792
Willy Tarreau8f128b42014-11-28 15:07:47 +01001793 rq_prod_last = si_f->state;
1794 rq_cons_last = si_b->state;
1795 rp_cons_last = si_f->state;
1796 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001797
1798 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001799 /* Check for connection closure */
1800
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001801 DPRINTF(stderr,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001802 "[%u] %s:%d: task=%p s=%p, sfl=0x%08x, rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%d rqt=%d rph=%d rpt=%d cs=%d ss=%d, cet=0x%x set=0x%x retr=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001803 now_ms, __FUNCTION__, __LINE__,
1804 t,
1805 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001806 req, res,
1807 req->rex, res->wex,
1808 req->flags, res->flags,
1809 req->buf->i, req->buf->o, res->buf->i, res->buf->o, si_f->state, si_b->state,
1810 si_f->err_type, si_b->err_type,
1811 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001812
1813 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001814 if (unlikely(si_f->state == SI_ST_DIS))
1815 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001816
1817 /* When a server-side connection is released, we have to count it and
1818 * check for pending connections on this server.
1819 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001820 if (unlikely(si_b->state == SI_ST_DIS)) {
1821 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001822 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001823 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001824 if (s->flags & SF_CURR_SESS) {
1825 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +02001826 HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001827 }
1828 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001829 if (may_dequeue_tasks(srv, s->be))
1830 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001831 }
1832 }
1833
1834 /*
1835 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1836 * at this point.
1837 */
1838
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001839 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001840 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001841 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1842 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001843 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001844 si_f->state != rq_prod_last ||
1845 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001846 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001847 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001848
Willy Tarreau8f128b42014-11-28 15:07:47 +01001849 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001850 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001851 unsigned int ana_list;
1852 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001853
Willy Tarreau90deb182010-01-07 00:20:41 +01001854 /* it's up to the analysers to stop new connections,
1855 * disable reading or closing. Note: if an analyser
1856 * disables any of these bits, it is responsible for
1857 * enabling them again when it disables itself, so
1858 * that other analysers are called in similar conditions.
1859 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001860 channel_auto_read(req);
1861 channel_auto_connect(req);
1862 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001863
1864 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001865 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001866 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001867 * the list when not needed. Any analyser may return 0
1868 * to break out of the loop, either because of missing
1869 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001870 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001871 * analyser, and we may loop again if other analysers
1872 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001873 *
1874 * We build a list of analysers to run. We evaluate all
1875 * of these analysers in the order of the lower bit to
1876 * the higher bit. This ordering is very important.
1877 * An analyser will often add/remove other analysers,
1878 * including itself. Any changes to itself have no effect
1879 * on the loop. If it removes any other analysers, we
1880 * want those analysers not to be called anymore during
1881 * this loop. If it adds an analyser that is located
1882 * after itself, we want it to be scheduled for being
1883 * processed during the loop. If it adds an analyser
1884 * which is located before it, we want it to switch to
1885 * it immediately, even if it has already been called
1886 * once but removed since.
1887 *
1888 * In order to achieve this, we compare the analyser
1889 * list after the call with a copy of it before the
1890 * call. The work list is fed with analyser bits that
1891 * appeared during the call. Then we compare previous
1892 * work list with the new one, and check the bits that
1893 * appeared. If the lowest of these bits is lower than
1894 * the current bit, it means we have enabled a previous
1895 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001896 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001897
Willy Tarreau8f128b42014-11-28 15:07:47 +01001898 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001899 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001900 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001901 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001902 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1903 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1904 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1905 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1906 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001907 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001908 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1909 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1910 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1911 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1912 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1913 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1914 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001915 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001916 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001917 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1918 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001919 break;
1920 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001921 }
Willy Tarreau84455332009-03-15 22:34:05 +01001922
Willy Tarreau8f128b42014-11-28 15:07:47 +01001923 rq_prod_last = si_f->state;
1924 rq_cons_last = si_b->state;
1925 req->flags &= ~CF_WAKE_ONCE;
1926 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001927
Willy Tarreau8f128b42014-11-28 15:07:47 +01001928 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001929 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001930 }
1931
Willy Tarreau576507f2010-01-07 00:09:04 +01001932 /* we'll monitor the request analysers while parsing the response,
1933 * because some response analysers may indirectly enable new request
1934 * analysers (eg: HTTP keep-alive).
1935 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001936 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01001937
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001938 resync_response:
1939 /* Analyse response */
1940
Willy Tarreau8f128b42014-11-28 15:07:47 +01001941 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
1942 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001943 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001944 si_f->state != rp_cons_last ||
1945 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001946 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001947 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001948
Willy Tarreau8f128b42014-11-28 15:07:47 +01001949 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001950 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001951 unsigned int ana_list;
1952 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001953
Willy Tarreau90deb182010-01-07 00:20:41 +01001954 /* it's up to the analysers to stop disable reading or
1955 * closing. Note: if an analyser disables any of these
1956 * bits, it is responsible for enabling them again when
1957 * it disables itself, so that other analysers are called
1958 * in similar conditions.
1959 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001960 channel_auto_read(res);
1961 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001962
1963 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001964 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001965 * to MSB. The analysers must remove themselves from
1966 * the list when not needed. Any analyser may return 0
1967 * to break out of the loop, either because of missing
1968 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001969 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001970 * analyser, and we may loop again if other analysers
1971 * are added in the middle.
1972 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001973
Willy Tarreau8f128b42014-11-28 15:07:47 +01001974 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001975 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001976 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001977 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
1978 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001979 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
1980 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
1981 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
1982 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 +01001983 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001984 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001985 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
1986 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001987 break;
1988 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001989 }
1990
Willy Tarreau8f128b42014-11-28 15:07:47 +01001991 rp_cons_last = si_f->state;
1992 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02001993 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001994 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001995
Willy Tarreau8f128b42014-11-28 15:07:47 +01001996 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001997 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001998 }
1999
Willy Tarreau576507f2010-01-07 00:09:04 +01002000 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002001 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002002 goto resync_request;
2003
Willy Tarreau8f128b42014-11-28 15:07:47 +01002004 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002005 goto resync_request;
2006
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002007 /* FIXME: here we should call protocol handlers which rely on
2008 * both buffers.
2009 */
2010
2011
2012 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002013 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002014 * we're just in a data phase here since it means we have not
2015 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002016 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002017 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002018 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002019 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002020 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002021 req->analysers = 0;
2022 if (req->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002023 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2024 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002025 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002026 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002027 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002028 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002029 else if (req->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002030 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2031 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002032 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002033 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002034 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002035 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002036 else if (req->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002037 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2038 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002039 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002040 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002041 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002042 }
2043 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002044 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2045 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002046 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002047 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002048 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002049 }
Willy Tarreau84455332009-03-15 22:34:05 +01002050 sess_set_term_flags(s);
2051 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002052 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002053 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002054 res->analysers = 0;
2055 if (res->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002056 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2057 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002058 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002059 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002060 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002061 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002062 else if (res->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002063 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2064 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002065 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002066 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002067 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002068 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002069 else if (res->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002070 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2071 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002072 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002073 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002074 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002075 }
2076 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002077 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2078 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002079 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002080 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002081 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002082 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002083 sess_set_term_flags(s);
2084 }
Willy Tarreau84455332009-03-15 22:34:05 +01002085 }
2086
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002087 /*
2088 * Here we take care of forwarding unhandled data. This also includes
2089 * connection establishments and shutdown requests.
2090 */
2091
2092
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002093 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002094 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002095 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002096 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002097 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002098 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002099 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2100 (si_f->state >= SI_ST_EST) &&
2101 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002102 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002103 * attached to it. If any data are left in, we'll permit them to
2104 * move.
2105 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002106 channel_auto_read(req);
2107 channel_auto_connect(req);
2108 channel_auto_close(req);
2109 buffer_flush(req->buf);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002110
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002111 /* We'll let data flow between the producer (if still connected)
2112 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002113 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002114 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002115 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002116
2117 /* Just in order to support fetching HTTP contents after start
2118 * of forwarding when the HTTP forwarding analyser is not used,
2119 * we simply reset msg->sov so that HTTP rewinding points to the
2120 * headers.
2121 */
2122 if (s->txn)
2123 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - req->buf->o;
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002124 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002125
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002126 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002127 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2128 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002129 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002130 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2131 (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 +01002132 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002133 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2134 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002135 (req->flags & CF_STREAMER_FAST)))) {
2136 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002137 }
2138
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002139 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002140 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002141
2142 /*
2143 * Now forward all shutdown requests between both sides of the buffer
2144 */
2145
Willy Tarreau520d95e2009-09-19 21:04:57 +02002146 /* first, let's check if the request buffer needs to shutdown(write), which may
2147 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002148 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2149 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002150 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002151 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002152 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002153 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002154 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002155
2156 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002157 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2158 channel_is_empty(req))) {
2159 if (req->flags & CF_READ_ERROR)
2160 si_b->flags |= SI_FL_NOLINGER;
2161 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002162 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002163
2164 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002165 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2166 !req->analysers))
2167 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002168
2169 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002170 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2171 if (si_f->flags & SI_FL_NOHALF)
2172 si_f->flags |= SI_FL_NOLINGER;
2173 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002174 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002175
Willy Tarreau520d95e2009-09-19 21:04:57 +02002176 /* it's possible that an upper layer has requested a connection setup or abort.
2177 * There are 2 situations where we decide to establish a new connection :
2178 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002179 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002180 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002181 if (si_b->state == SI_ST_INI) {
2182 if (!(req->flags & CF_SHUTW)) {
2183 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002184 /* If we have an appctx, there is no connect method, so we
2185 * immediately switch to the connected state, otherwise we
2186 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002187 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002188 si_b->state = SI_ST_REQ; /* new connection requested */
2189 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002190 }
Willy Tarreau73201222009-08-16 18:27:24 +02002191 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002192 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002193 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002194 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2195 channel_shutw_now(req); /* fix buffer flags upon abort */
2196 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002197 }
Willy Tarreau92795622009-03-06 12:51:23 +01002198 }
2199
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002200
2201 /* we may have a pending connection request, or a connection waiting
2202 * for completion.
2203 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002204 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002205
2206 /* prune the request variables and swap to the response variables. */
2207 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreau6204cd92016-03-10 16:33:04 +01002208 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002209 vars_init(&s->vars_reqres, SCOPE_RES);
2210 }
2211
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002212 do {
2213 /* nb: step 1 might switch from QUE to ASS, but we first want
2214 * to give a chance to step 2 to perform a redirect if needed.
2215 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002216 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002217 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002218 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002219 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002220
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002221 /* applets directly go to the ESTABLISHED state. Similarly,
2222 * servers experience the same fate when their connection
2223 * is reused.
2224 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002225 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002226 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002227
Willy Tarreaub44c8732013-12-31 23:16:50 +01002228 /* Now we can add the server name to a header (if requested) */
2229 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002230 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002231 (s->be->server_id_hdr_name != NULL) &&
2232 (s->be->mode == PR_MODE_HTTP) &&
2233 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002234 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002235 }
2236
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002237 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002238 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002239 http_perform_server_redirect(s, si_b);
2240 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002241 }
2242
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002243 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002244 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002245 goto resync_stream_interface;
2246
Willy Tarreau815a9b22010-07-27 17:15:12 +02002247 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002248 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002249 goto resync_request;
2250
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002251 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002252
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002253 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002254 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002255 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002256 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002257 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002258 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002259 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2260 (si_b->state >= SI_ST_EST) &&
2261 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002262 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002263 * attached to it. If any data are left in, we'll permit them to
2264 * move.
2265 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002266 channel_auto_read(res);
2267 channel_auto_close(res);
2268 buffer_flush(res->buf);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002269
2270 /* We'll let data flow between the producer (if still connected)
2271 * to the consumer.
2272 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002273 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002274 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002275
Willy Tarreau42529c32015-07-09 18:38:57 +02002276 /* Just in order to support fetching HTTP contents after start
2277 * of forwarding when the HTTP forwarding analyser is not used,
2278 * we simply reset msg->sov so that HTTP rewinding points to the
2279 * headers.
2280 */
2281 if (s->txn)
2282 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - res->buf->o;
2283
Willy Tarreauce887fd2012-05-12 12:50:00 +02002284 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002285 * tunnel timeout set, use it now. Note that we must respect
2286 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002287 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002288 if (!req->analysers && s->be->timeout.tunnel) {
2289 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002290 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002291
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002292 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2293 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002294 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2295 res->rto = s->be->timeout.serverfin;
2296 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2297 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002298 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2299 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002300
Willy Tarreau8f128b42014-11-28 15:07:47 +01002301 req->rex = tick_add(now_ms, req->rto);
2302 req->wex = tick_add(now_ms, req->wto);
2303 res->rex = tick_add(now_ms, res->rto);
2304 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002305 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002306 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002307
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002308 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002309 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2310 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002311 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002312 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2313 (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 +01002314 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002315 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2316 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002317 (res->flags & CF_STREAMER_FAST)))) {
2318 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002319 }
2320
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002321 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002322 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002323
2324 /*
2325 * Now forward all shutdown requests between both sides of the buffer
2326 */
2327
2328 /*
2329 * FIXME: this is probably where we should produce error responses.
2330 */
2331
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002332 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002333 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002334 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002335 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002336 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002337
2338 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002339 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2340 channel_is_empty(res))) {
2341 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002342 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002343
2344 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002345 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2346 !res->analysers)
2347 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002348
2349 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002350 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2351 if (si_b->flags & SI_FL_NOHALF)
2352 si_b->flags |= SI_FL_NOLINGER;
2353 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002354 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002355
Willy Tarreau8f128b42014-11-28 15:07:47 +01002356 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002357 goto resync_stream_interface;
2358
Willy Tarreau8f128b42014-11-28 15:07:47 +01002359 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002360 goto resync_request;
2361
Willy Tarreau8f128b42014-11-28 15:07:47 +01002362 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002363 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002364
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002365 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002366 si_f->flags &= ~SI_FL_DONT_WAKE;
2367 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002368
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002369 /* This is needed only when debugging is enabled, to indicate
2370 * client-side or server-side close. Please note that in the unlikely
2371 * event where both sides would close at once, the sequence is reported
2372 * on the server side first.
2373 */
2374 if (unlikely((global.mode & MODE_DEBUG) &&
2375 (!(global.mode & MODE_QUIET) ||
2376 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002377 if (si_b->state == SI_ST_CLO &&
2378 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002379 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002380 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002381 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2382 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002383 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002384 }
2385
Willy Tarreau8f128b42014-11-28 15:07:47 +01002386 if (si_f->state == SI_ST_CLO &&
2387 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002388 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002389 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002390 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2391 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002392 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002393 }
2394 }
2395
Willy Tarreau8f128b42014-11-28 15:07:47 +01002396 if (likely((si_f->state != SI_ST_CLO) ||
2397 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002398
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002399 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002400 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002401
Willy Tarreau563cc372015-04-19 18:13:56 +02002402 if (si_f->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002403 si_update(si_f);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002404
Willy Tarreau563cc372015-04-19 18:13:56 +02002405 if (si_b->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002406 si_update(si_b);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002407
Christopher Fauletc5a9d5b2017-11-09 09:36:43 +01002408 req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED|CF_WRITE_EVENT);
2409 res->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED|CF_WRITE_EVENT);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002410 si_f->prev_state = si_f->state;
2411 si_b->prev_state = si_b->state;
2412 si_f->flags &= ~(SI_FL_ERR|SI_FL_EXP);
2413 si_b->flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002414
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002415 /* Trick: if a request is being waiting for the server to respond,
2416 * and if we know the server can timeout, we don't want the timeout
2417 * to expire on the client side first, but we're still interested
2418 * in passing data from the client to the server (eg: POST). Thus,
2419 * we can cancel the client's request timeout if the server's
2420 * request timeout is set and the server has not yet sent a response.
2421 */
2422
Willy Tarreau8f128b42014-11-28 15:07:47 +01002423 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2424 (tick_isset(req->wex) || tick_isset(res->rex))) {
2425 req->flags |= CF_READ_NOEXP;
2426 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002427 }
2428
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002429 /* Reset pending events now */
2430 s->pending_events = 0;
2431
Willy Tarreau798f4322012-11-08 14:49:17 +01002432 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002433 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002434 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2435 tick_first(tick_first(req->rex, req->wex),
2436 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002437 if (!req->analysers)
2438 req->analyse_exp = TICK_ETERNITY;
2439
2440 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2441 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2442 req->analyse_exp = tick_add(now_ms, 5000);
2443
2444 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002445
Willy Tarreau9a398be2017-11-10 17:14:23 +01002446 t->expire = tick_first(t->expire, res->analyse_exp);
2447
Willy Tarreau8f128b42014-11-28 15:07:47 +01002448 if (si_f->exp)
2449 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002450
Willy Tarreau8f128b42014-11-28 15:07:47 +01002451 if (si_b->exp)
2452 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002453
Christopher Faulet56803b12017-11-24 16:06:18 +01002454 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002455 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2456 " 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 +01002457 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2458 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002459
2460#ifdef DEBUG_DEV
2461 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002462 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002463 ABORT_NOW();
2464#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002465 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002466 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002467 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002468 }
2469
Willy Tarreaue7dff022015-04-03 01:14:29 +02002470 if (s->flags & SF_BE_ASSIGNED)
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002471 HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002472
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002473 if (unlikely((global.mode & MODE_DEBUG) &&
2474 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002475 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002476 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002477 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2478 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002479 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002480 }
2481
2482 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002483 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002484
Willy Tarreaueee5b512015-04-03 23:46:31 +02002485 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002486 int n;
2487
Willy Tarreaueee5b512015-04-03 23:46:31 +02002488 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002489 if (n < 1 || n > 5)
2490 n = 0;
2491
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002492 if (sess->fe->mode == PR_MODE_HTTP) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002493 HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002494 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002495 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002496 (s->be->mode == PR_MODE_HTTP)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002497 HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2498 HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002499 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002500 }
2501
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002502 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002503 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002504 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002505 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002506 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002507 }
2508
Willy Tarreau87b09662015-04-03 00:22:06 +02002509 /* update time stats for this stream */
2510 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002511
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002512 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002513 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002514 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002515 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002516 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002517}
2518
Willy Tarreau87b09662015-04-03 00:22:06 +02002519/* Update the stream's backend and server time stats */
2520void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002521{
2522 int t_request;
2523 int t_queue;
2524 int t_connect;
2525 int t_data;
2526 int t_close;
2527 struct server *srv;
2528
2529 t_request = 0;
2530 t_queue = s->logs.t_queue;
2531 t_connect = s->logs.t_connect;
2532 t_close = s->logs.t_close;
2533 t_data = s->logs.t_data;
2534
2535 if (s->be->mode != PR_MODE_HTTP)
2536 t_data = t_connect;
2537
2538 if (t_connect < 0 || t_data < 0)
2539 return;
2540
2541 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2542 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2543
2544 t_data -= t_connect;
2545 t_connect -= t_queue;
2546 t_queue -= t_request;
2547
2548 srv = objt_server(s->target);
2549 if (srv) {
2550 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2551 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2552 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2553 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2554 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002555 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002556 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2557 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2558 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2559 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002560 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002561}
2562
Willy Tarreau7c669d72008-06-20 15:04:11 +02002563/*
2564 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002565 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002566 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002567 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002568 * server.
2569 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002570void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002571{
2572 if (sess->srv_conn == newsrv)
2573 return;
2574
2575 if (sess->srv_conn) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002576 HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002577 HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002578 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2579 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002580 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002581 }
2582
2583 if (newsrv) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002584 HA_ATOMIC_ADD(&newsrv->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002585 HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002586 if (newsrv->proxy->lbprm.server_take_conn)
2587 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002588 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002589 }
2590}
2591
Willy Tarreau84455332009-03-15 22:34:05 +01002592/* Handle server-side errors for default protocols. It is called whenever a a
2593 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002594 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002595 * them. It's installed as ->srv_error for the server-side stream_interface.
2596 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002597void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002598{
2599 int err_type = si->err_type;
2600 int err = 0, fin = 0;
2601
2602 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002603 err = SF_ERR_CLICL;
2604 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002605 }
2606 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002607 err = SF_ERR_CLICL;
2608 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002609 }
2610 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002611 err = SF_ERR_SRVTO;
2612 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002613 }
2614 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002615 err = SF_ERR_SRVCL;
2616 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002617 }
2618 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002619 err = SF_ERR_SRVTO;
2620 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002621 }
2622 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002623 err = SF_ERR_SRVCL;
2624 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002625 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002626 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002627 err = SF_ERR_RESOURCE;
2628 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002629 }
Willy Tarreau84455332009-03-15 22:34:05 +01002630 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002631 err = SF_ERR_INTERNAL;
2632 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002633 }
2634
Willy Tarreaue7dff022015-04-03 01:14:29 +02002635 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002636 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002637 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002638 s->flags |= fin;
2639}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002640
Willy Tarreaue7dff022015-04-03 01:14:29 +02002641/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002642void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002643{
Willy Tarreau87b09662015-04-03 00:22:06 +02002644 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002645 return;
2646
Willy Tarreau87b09662015-04-03 00:22:06 +02002647 channel_shutw_now(&stream->req);
2648 channel_shutr_now(&stream->res);
2649 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002650 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002651 stream->flags |= why;
2652 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002653}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002654
Willy Tarreau8b22a712010-06-18 17:46:06 +02002655/************************************************************************/
2656/* All supported ACL keywords must be declared here. */
2657/************************************************************************/
2658
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002659/* 0=OK, <0=Alert, >0=Warning */
2660static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2661 struct proxy *px, struct act_rule *rule,
2662 char **err)
2663{
2664 struct action_kw *kw;
2665
2666 /* Check if the service name exists. */
2667 if (*(args[*cur_arg]) == 0) {
2668 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002669 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002670 }
2671
2672 /* lookup for keyword corresponding to a service. */
2673 kw = action_lookup(&service_keywords, args[*cur_arg]);
2674 if (!kw) {
2675 memprintf(err, "'%s' unknown service name.", args[1]);
2676 return ACT_RET_PRS_ERR;
2677 }
2678 (*cur_arg)++;
2679
2680 /* executes specific rule parser. */
2681 rule->kw = kw;
2682 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2683 return ACT_RET_PRS_ERR;
2684
2685 /* Register processing function. */
2686 rule->action_ptr = process_use_service;
2687 rule->action = ACT_CUSTOM;
2688
2689 return ACT_RET_PRS_OK;
2690}
2691
2692void service_keywords_register(struct action_kw_list *kw_list)
2693{
2694 LIST_ADDQ(&service_keywords, &kw_list->list);
2695}
2696
William Lallemand4c5b4d52016-11-21 08:51:11 +01002697
2698/* This function dumps a complete stream state onto the stream interface's
2699 * read buffer. The stream has to be set in strm. It returns 0 if the output
2700 * buffer is full and it needs to be called again, otherwise non-zero. It is
2701 * designed to be called from stats_dump_strm_to_buffer() below.
2702 */
2703static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2704{
2705 struct appctx *appctx = __objt_appctx(si->end);
2706 struct tm tm;
2707 extern const char *monthname[12];
2708 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002709 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01002710 struct connection *conn;
2711 struct appctx *tmpctx;
2712
2713 chunk_reset(&trash);
2714
2715 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2716 /* stream changed, no need to go any further */
2717 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002718 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01002719 si_applet_cant_put(si);
2720 return 0;
2721 }
2722 appctx->ctx.sess.uid = 0;
2723 appctx->ctx.sess.section = 0;
2724 return 1;
2725 }
2726
2727 switch (appctx->ctx.sess.section) {
2728 case 0: /* main status of the stream */
2729 appctx->ctx.sess.uid = strm->uniq_id;
2730 appctx->ctx.sess.section = 1;
2731 /* fall through */
2732
2733 case 1:
2734 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2735 chunk_appendf(&trash,
2736 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2737 strm,
2738 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2739 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2740 strm->uniq_id,
2741 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2742
2743 conn = objt_conn(strm_orig(strm));
2744 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2745 case AF_INET:
2746 case AF_INET6:
2747 chunk_appendf(&trash, " source=%s:%d\n",
2748 pn, get_host_port(&conn->addr.from));
2749 break;
2750 case AF_UNIX:
2751 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2752 break;
2753 default:
2754 /* no more information to print right now */
2755 chunk_appendf(&trash, "\n");
2756 break;
2757 }
2758
2759 chunk_appendf(&trash,
2760 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2761 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2762
2763 chunk_appendf(&trash,
2764 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2765 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2766 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2767 strm_li(strm) ? strm_li(strm)->luid : 0);
2768
2769 if (conn)
2770 conn_get_to_addr(conn);
2771
2772 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2773 case AF_INET:
2774 case AF_INET6:
2775 chunk_appendf(&trash, " addr=%s:%d\n",
2776 pn, get_host_port(&conn->addr.to));
2777 break;
2778 case AF_UNIX:
2779 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2780 break;
2781 default:
2782 /* no more information to print right now */
2783 chunk_appendf(&trash, "\n");
2784 break;
2785 }
2786
2787 if (strm->be->cap & PR_CAP_BE)
2788 chunk_appendf(&trash,
2789 " backend=%s (id=%u mode=%s)",
2790 strm->be->id,
2791 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2792 else
2793 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2794
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002795 cs = objt_cs(strm->si[1].end);
2796 conn = cs_conn(cs);
2797
William Lallemand4c5b4d52016-11-21 08:51:11 +01002798 if (conn)
2799 conn_get_from_addr(conn);
2800
2801 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2802 case AF_INET:
2803 case AF_INET6:
2804 chunk_appendf(&trash, " addr=%s:%d\n",
2805 pn, get_host_port(&conn->addr.from));
2806 break;
2807 case AF_UNIX:
2808 chunk_appendf(&trash, " addr=unix\n");
2809 break;
2810 default:
2811 /* no more information to print right now */
2812 chunk_appendf(&trash, "\n");
2813 break;
2814 }
2815
2816 if (strm->be->cap & PR_CAP_BE)
2817 chunk_appendf(&trash,
2818 " server=%s (id=%u)",
2819 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2820 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2821 else
2822 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2823
2824 if (conn)
2825 conn_get_to_addr(conn);
2826
2827 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2828 case AF_INET:
2829 case AF_INET6:
2830 chunk_appendf(&trash, " addr=%s:%d\n",
2831 pn, get_host_port(&conn->addr.to));
2832 break;
2833 case AF_UNIX:
2834 chunk_appendf(&trash, " addr=unix\n");
2835 break;
2836 default:
2837 /* no more information to print right now */
2838 chunk_appendf(&trash, "\n");
2839 break;
2840 }
2841
2842 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002843 " task=%p (state=0x%02x nice=%d calls=%d exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002844 strm->task,
2845 strm->task->state,
2846 strm->task->nice, strm->task->calls,
2847 strm->task->expire ?
2848 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2849 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2850 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01002851 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01002852 task_in_rq(strm->task) ? ", running" : "");
2853
2854 chunk_appendf(&trash,
2855 " age=%s)\n",
2856 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2857
2858 if (strm->txn)
2859 chunk_appendf(&trash,
2860 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2861 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02002862 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 +01002863
2864 chunk_appendf(&trash,
2865 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2866 &strm->si[0],
2867 si_state_str(strm->si[0].state),
2868 strm->si[0].flags,
2869 obj_type_name(strm->si[0].end),
2870 obj_base_ptr(strm->si[0].end),
2871 strm->si[0].exp ?
2872 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2873 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2874 TICKS_TO_MS(1000)) : "<NEVER>",
2875 strm->si[0].err_type);
2876
2877 chunk_appendf(&trash,
2878 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2879 &strm->si[1],
2880 si_state_str(strm->si[1].state),
2881 strm->si[1].flags,
2882 obj_type_name(strm->si[1].end),
2883 obj_base_ptr(strm->si[1].end),
2884 strm->si[1].exp ?
2885 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2886 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2887 TICKS_TO_MS(1000)) : "<NEVER>",
2888 strm->si[1].err_type);
2889
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002890 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
2891 conn = cs->conn;
2892
William Lallemand4c5b4d52016-11-21 08:51:11 +01002893 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002894 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002895 conn,
2896 conn_get_ctrl_name(conn),
2897 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002898 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002899 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002900 obj_type_name(conn->target),
2901 obj_base_ptr(conn->target));
2902
2903 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002904 " 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 +01002905 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002906 conn->handle.fd,
2907 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002908 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002909 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002910 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002911 }
2912 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2913 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002914 " 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 +01002915 tmpctx,
2916 tmpctx->st0,
2917 tmpctx->st1,
2918 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002919 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002920 tmpctx->thread_mask,
2921 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002922 }
2923
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002924 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
2925 conn = cs->conn;
2926
William Lallemand4c5b4d52016-11-21 08:51:11 +01002927 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002928 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002929 conn,
2930 conn_get_ctrl_name(conn),
2931 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002932 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002933 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002934 obj_type_name(conn->target),
2935 obj_base_ptr(conn->target));
2936
2937 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002938 " 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 +01002939 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002940 conn->handle.fd,
2941 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002942 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002943 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002944 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002945 }
2946 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
2947 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002948 " 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 +01002949 tmpctx,
2950 tmpctx->st0,
2951 tmpctx->st1,
2952 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002953 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002954 tmpctx->thread_mask,
2955 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002956 }
2957
2958 chunk_appendf(&trash,
2959 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2960 " an_exp=%s",
2961 &strm->req,
2962 strm->req.flags, strm->req.analysers,
2963 strm->req.pipe ? strm->req.pipe->data : 0,
2964 strm->req.to_forward, strm->req.total,
2965 strm->req.analyse_exp ?
2966 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
2967 TICKS_TO_MS(1000)) : "<NEVER>");
2968
2969 chunk_appendf(&trash,
2970 " rex=%s",
2971 strm->req.rex ?
2972 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
2973 TICKS_TO_MS(1000)) : "<NEVER>");
2974
2975 chunk_appendf(&trash,
2976 " wex=%s\n"
2977 " buf=%p data=%p o=%d p=%d req.next=%d i=%d size=%d\n",
2978 strm->req.wex ?
2979 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
2980 TICKS_TO_MS(1000)) : "<NEVER>",
2981 strm->req.buf,
2982 strm->req.buf->data, strm->req.buf->o,
2983 (int)(strm->req.buf->p - strm->req.buf->data),
2984 strm->txn ? strm->txn->req.next : 0, strm->req.buf->i,
2985 strm->req.buf->size);
2986
2987 chunk_appendf(&trash,
2988 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2989 " an_exp=%s",
2990 &strm->res,
2991 strm->res.flags, strm->res.analysers,
2992 strm->res.pipe ? strm->res.pipe->data : 0,
2993 strm->res.to_forward, strm->res.total,
2994 strm->res.analyse_exp ?
2995 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
2996 TICKS_TO_MS(1000)) : "<NEVER>");
2997
2998 chunk_appendf(&trash,
2999 " rex=%s",
3000 strm->res.rex ?
3001 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3002 TICKS_TO_MS(1000)) : "<NEVER>");
3003
3004 chunk_appendf(&trash,
3005 " wex=%s\n"
3006 " buf=%p data=%p o=%d p=%d rsp.next=%d i=%d size=%d\n",
3007 strm->res.wex ?
3008 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3009 TICKS_TO_MS(1000)) : "<NEVER>",
3010 strm->res.buf,
3011 strm->res.buf->data, strm->res.buf->o,
3012 (int)(strm->res.buf->p - strm->res.buf->data),
3013 strm->txn ? strm->txn->rsp.next : 0, strm->res.buf->i,
3014 strm->res.buf->size);
3015
Willy Tarreau06d80a92017-10-19 14:32:15 +02003016 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003017 si_applet_cant_put(si);
3018 return 0;
3019 }
3020
3021 /* use other states to dump the contents */
3022 }
3023 /* end of dump */
3024 appctx->ctx.sess.uid = 0;
3025 appctx->ctx.sess.section = 0;
3026 return 1;
3027}
3028
3029
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003030static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003031{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003032 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3033 return 1;
3034
3035 if (*args[2] && strcmp(args[2], "all") == 0)
3036 appctx->ctx.sess.target = (void *)-1;
3037 else if (*args[2])
3038 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3039 else
3040 appctx->ctx.sess.target = NULL;
3041 appctx->ctx.sess.section = 0; /* start with stream status */
3042 appctx->ctx.sess.pos = 0;
3043
3044 return 0;
3045}
3046
3047/* This function dumps all streams' states onto the stream interface's
3048 * read buffer. It returns 0 if the output buffer is full and it needs
3049 * to be called again, otherwise non-zero. It is designed to be called
3050 * from stats_dump_sess_to_buffer() below.
3051 */
3052static int cli_io_handler_dump_sess(struct appctx *appctx)
3053{
3054 struct stream_interface *si = appctx->owner;
3055 struct connection *conn;
3056
3057 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3058 /* If we're forced to shut down, we might have to remove our
3059 * reference to the last stream being dumped.
3060 */
3061 if (appctx->st2 == STAT_ST_LIST) {
3062 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3063 LIST_DEL(&appctx->ctx.sess.bref.users);
3064 LIST_INIT(&appctx->ctx.sess.bref.users);
3065 }
3066 }
3067 return 1;
3068 }
3069
3070 chunk_reset(&trash);
3071
3072 switch (appctx->st2) {
3073 case STAT_ST_INIT:
3074 /* the function had not been called yet, let's prepare the
3075 * buffer for a response. We initialize the current stream
3076 * pointer to the first in the global list. When a target
3077 * stream is being destroyed, it is responsible for updating
3078 * this pointer. We know we have reached the end when this
3079 * pointer points back to the head of the streams list.
3080 */
3081 LIST_INIT(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003082 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003083 appctx->ctx.sess.bref.ref = streams.n;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003084 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003085 appctx->st2 = STAT_ST_LIST;
3086 /* fall through */
3087
3088 case STAT_ST_LIST:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003089 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003090 /* first, let's detach the back-ref from a possible previous stream */
3091 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3092 LIST_DEL(&appctx->ctx.sess.bref.users);
3093 LIST_INIT(&appctx->ctx.sess.bref.users);
3094 }
3095
3096 /* and start from where we stopped */
3097 while (appctx->ctx.sess.bref.ref != &streams) {
3098 char pn[INET6_ADDRSTRLEN];
3099 struct stream *curr_strm;
3100
3101 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3102
3103 if (appctx->ctx.sess.target) {
3104 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3105 goto next_sess;
3106
3107 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3108 /* call the proper dump() function and return if we're missing space */
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003109 if (!stats_dump_full_strm_to_buffer(si, curr_strm)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003110 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003111 return 0;
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003112 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003113
3114 /* stream dump complete */
3115 LIST_DEL(&appctx->ctx.sess.bref.users);
3116 LIST_INIT(&appctx->ctx.sess.bref.users);
3117 if (appctx->ctx.sess.target != (void *)-1) {
3118 appctx->ctx.sess.target = NULL;
3119 break;
3120 }
3121 else
3122 goto next_sess;
3123 }
3124
3125 chunk_appendf(&trash,
3126 "%p: proto=%s",
3127 curr_strm,
3128 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3129
3130 conn = objt_conn(strm_orig(curr_strm));
3131 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3132 case AF_INET:
3133 case AF_INET6:
3134 chunk_appendf(&trash,
3135 " src=%s:%d fe=%s be=%s srv=%s",
3136 pn,
3137 get_host_port(&conn->addr.from),
3138 strm_fe(curr_strm)->id,
3139 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3140 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3141 );
3142 break;
3143 case AF_UNIX:
3144 chunk_appendf(&trash,
3145 " src=unix:%d fe=%s be=%s srv=%s",
3146 strm_li(curr_strm)->luid,
3147 strm_fe(curr_strm)->id,
3148 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3149 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3150 );
3151 break;
3152 }
3153
3154 chunk_appendf(&trash,
3155 " ts=%02x age=%s calls=%d",
3156 curr_strm->task->state,
3157 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3158 curr_strm->task->calls);
3159
3160 chunk_appendf(&trash,
3161 " rq[f=%06xh,i=%d,an=%02xh,rx=%s",
3162 curr_strm->req.flags,
3163 curr_strm->req.buf->i,
3164 curr_strm->req.analysers,
3165 curr_strm->req.rex ?
3166 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3167 TICKS_TO_MS(1000)) : "");
3168
3169 chunk_appendf(&trash,
3170 ",wx=%s",
3171 curr_strm->req.wex ?
3172 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3173 TICKS_TO_MS(1000)) : "");
3174
3175 chunk_appendf(&trash,
3176 ",ax=%s]",
3177 curr_strm->req.analyse_exp ?
3178 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3179 TICKS_TO_MS(1000)) : "");
3180
3181 chunk_appendf(&trash,
3182 " rp[f=%06xh,i=%d,an=%02xh,rx=%s",
3183 curr_strm->res.flags,
3184 curr_strm->res.buf->i,
3185 curr_strm->res.analysers,
3186 curr_strm->res.rex ?
3187 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3188 TICKS_TO_MS(1000)) : "");
3189
3190 chunk_appendf(&trash,
3191 ",wx=%s",
3192 curr_strm->res.wex ?
3193 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3194 TICKS_TO_MS(1000)) : "");
3195
3196 chunk_appendf(&trash,
3197 ",ax=%s]",
3198 curr_strm->res.analyse_exp ?
3199 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3200 TICKS_TO_MS(1000)) : "");
3201
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003202 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003203 chunk_appendf(&trash,
3204 " s0=[%d,%1xh,fd=%d,ex=%s]",
3205 curr_strm->si[0].state,
3206 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003207 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003208 curr_strm->si[0].exp ?
3209 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3210 TICKS_TO_MS(1000)) : "");
3211
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003212 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003213 chunk_appendf(&trash,
3214 " s1=[%d,%1xh,fd=%d,ex=%s]",
3215 curr_strm->si[1].state,
3216 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003217 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003218 curr_strm->si[1].exp ?
3219 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3220 TICKS_TO_MS(1000)) : "");
3221
3222 chunk_appendf(&trash,
3223 " exp=%s",
3224 curr_strm->task->expire ?
3225 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3226 TICKS_TO_MS(1000)) : "");
3227 if (task_in_rq(curr_strm->task))
3228 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3229
3230 chunk_appendf(&trash, "\n");
3231
Willy Tarreau06d80a92017-10-19 14:32:15 +02003232 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003233 /* let's try again later from this stream. We add ourselves into
3234 * this stream's users so that it can remove us upon termination.
3235 */
3236 si_applet_cant_put(si);
3237 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003238 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003239 return 0;
3240 }
3241
3242 next_sess:
3243 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3244 }
3245
3246 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3247 /* specified stream not found */
3248 if (appctx->ctx.sess.section > 0)
3249 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3250 else
3251 chunk_appendf(&trash, "Session not found.\n");
3252
Willy Tarreau06d80a92017-10-19 14:32:15 +02003253 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003254 si_applet_cant_put(si);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003255 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003256 return 0;
3257 }
3258
3259 appctx->ctx.sess.target = NULL;
3260 appctx->ctx.sess.uid = 0;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003261 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003262 return 1;
3263 }
3264
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003265 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003266 /* fall through */
3267
3268 default:
3269 appctx->st2 = STAT_ST_FIN;
3270 return 1;
3271 }
3272}
3273
3274static void cli_release_show_sess(struct appctx *appctx)
3275{
3276 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003277 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003278 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3279 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003280 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003281 }
3282}
3283
Willy Tarreau61b65212016-11-24 11:09:25 +01003284/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003285static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003286{
3287 struct stream *strm, *ptr;
3288
3289 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3290 return 1;
3291
3292 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003293 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003294 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003295 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003296 return 1;
3297 }
3298
3299 ptr = (void *)strtoul(args[2], NULL, 0);
3300
3301 /* first, look for the requested stream in the stream table */
3302 list_for_each_entry(strm, &streams, list) {
3303 if (strm == ptr)
3304 break;
3305 }
3306
3307 /* do we have the stream ? */
3308 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003309 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003310 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003311 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003312 return 1;
3313 }
3314
3315 stream_shutdown(strm, SF_ERR_KILLED);
3316 return 1;
3317}
3318
Willy Tarreau4e46b622016-11-23 16:50:48 +01003319/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003320static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003321{
3322 struct server *sv;
3323 struct stream *strm, *strm_bck;
3324
3325 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3326 return 1;
3327
3328 sv = cli_find_server(appctx, args[3]);
3329 if (!sv)
3330 return 1;
3331
3332 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003333 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003334 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3335 if (strm->srv_conn == sv)
3336 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003337 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003338 return 1;
3339}
3340
William Lallemand4c5b4d52016-11-21 08:51:11 +01003341/* register cli keywords */
3342static struct cli_kw_list cli_kws = {{ },{
3343 { { "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 +01003344 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003345 { { "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 +01003346 {{},}
3347}};
3348
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003349/* main configuration keyword registration. */
3350static struct action_kw_list stream_tcp_keywords = { ILH, {
3351 { "use-service", stream_parse_use_service },
3352 { /* END */ }
3353}};
3354
3355static struct action_kw_list stream_http_keywords = { ILH, {
3356 { "use-service", stream_parse_use_service },
3357 { /* END */ }
3358}};
3359
Willy Tarreau8b22a712010-06-18 17:46:06 +02003360__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003361static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003362{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003363 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3364 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003365 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003366}
3367
Willy Tarreaubaaee002006-06-26 02:48:02 +02003368/*
3369 * Local variables:
3370 * c-indent-level: 8
3371 * c-basic-offset: 8
3372 * End:
3373 */