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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
Willy Tarreau87b09662015-04-03 00:22:06 +02002 * Stream management functions.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003 *
Willy Tarreaud28c3532012-04-19 19:28:33 +02004 * Copyright 2000-2012 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <stdlib.h>
Willy Tarreau81f9aa32010-06-01 17:45:26 +020014#include <unistd.h>
15#include <fcntl.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020016
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020017#include <common/cfgparse.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020018#include <common/config.h>
Willy Tarreau9b28e032012-10-12 23:49:43 +020019#include <common/buffer.h>
Willy Tarreau7c669d72008-06-20 15:04:11 +020020#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020021#include <common/memory.h>
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +020022#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020023
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020024#include <types/applet.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020025#include <types/capture.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010026#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020027#include <types/filters.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010028#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010029#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020030
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020031#include <proto/acl.h>
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020032#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020033#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010034#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020035#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010036#include <proto/checks.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010037#include <proto/cli.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020038#include <proto/connection.h>
William Lallemand9ed62032016-11-21 17:49:11 +010039#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020040#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020041#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020042#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020043#include <proto/frontend.h>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010044#include <proto/hdr_idx.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010045#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +020046#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020047#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020048#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020049#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020050#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020051#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010052#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010053#include <proto/proto_http.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020054#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020055#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010056#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020057#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010058#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010059#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010060#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010061#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020062#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020063
Willy Tarreaubafbe012017-11-24 17:34:44 +010064struct pool_head *pool_head_stream;
Willy Tarreau87b09662015-04-03 00:22:06 +020065struct list streams;
Christopher Faulet9dcf9b62017-11-13 10:34:01 +010066__decl_hathreads(HA_SPINLOCK_T streams_lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +020067
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020068/* List of all use-service keywords. */
69static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
70
Willy Tarreau5790eb02017-08-28 17:18:36 +020071
72/* Create a new stream for connection <conn>. Return < 0 on error. This is only
73 * valid right after the handshake, before the connection's data layer is
74 * initialized, because it relies on the session to be in conn->owner.
75 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +020076int stream_create_from_cs(struct conn_stream *cs)
Willy Tarreau5790eb02017-08-28 17:18:36 +020077{
78 struct stream *strm;
79
Olivier Houchard9aaf7782017-09-13 18:30:23 +020080 strm = stream_new(cs->conn->owner, &cs->obj_type);
Willy Tarreau5790eb02017-08-28 17:18:36 +020081 if (strm == NULL)
82 return -1;
83
84 task_wakeup(strm->task, TASK_WOKEN_INIT);
85 return 0;
86}
87
Willy Tarreaub882dd82018-11-06 15:50:21 +010088/* Callback used to wake up a stream when an input buffer is available. The
89 * stream <s>'s stream interfaces are checked for a failed buffer allocation
90 * as indicated by the presence of the SI_FL_WAIT_ROOM flag and the lack of a
91 * buffer, and and input buffer is assigned there (at most one). The function
92 * returns 1 and wakes the stream up if a buffer was taken, otherwise zero.
93 * It's designed to be called from __offer_buffer().
94 */
95int stream_buf_available(void *arg)
96{
97 struct stream *s = arg;
98
99 if (!s->req.buf.size && !s->req.pipe && (s->si[0].flags & SI_FL_WAIT_ROOM) &&
100 b_alloc_margin(&s->req.buf, global.tune.reserved_bufs))
101 s->si[0].flags &= ~SI_FL_WAIT_ROOM;
102 else if (!s->res.buf.size && !s->res.pipe && (s->si[1].flags & SI_FL_WAIT_ROOM) &&
103 b_alloc_margin(&s->res.buf, 0))
104 s->si[1].flags &= ~SI_FL_WAIT_ROOM;
105 else
106 return 0;
107
108 task_wakeup(s->task, TASK_WOKEN_RES);
109 return 1;
110
111}
112
Willy Tarreau9903f0e2015-04-04 18:50:31 +0200113/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200114 * handshake, in order to complete initialization of a valid stream. It must be
Willy Tarreau87787ac2017-08-28 16:22:54 +0200115 * called with a completley initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200116 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +0200117 * end point is assigned to <origin>, which must be valid. The stream's task
118 * is configured with a nice value inherited from the listener's nice if any.
119 * The task's context is set to the new stream, and its function is set to
120 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +0200121 */
Willy Tarreau87787ac2017-08-28 16:22:54 +0200122struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +0200123{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200124 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200125 struct task *t;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200126 struct conn_stream *cs = objt_cs(origin);
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200127 struct appctx *appctx = objt_appctx(origin);
Willy Tarreau2542b532012-08-31 16:01:23 +0200128
Willy Tarreaubafbe012017-11-24 17:34:44 +0100129 if (unlikely((s = pool_alloc(pool_head_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200130 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200131
132 /* minimum stream initialization required for an embryonic stream is
133 * fairly low. We need very little to execute L4 ACLs, then we need a
134 * task to make the client-side connection live on its own.
135 * - flags
136 * - stick-entry tracking
137 */
138 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200139 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200140 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200141 s->logs.accept_date = sess->accept_date; /* user-visible date for logging */
142 s->logs.tv_accept = sess->tv_accept; /* corrected date for internal use */
Willy Tarreau590a0512018-09-05 11:56:48 +0200143 s->logs.t_handshake = sess->t_handshake;
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200144 s->logs.t_idle = -1;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200145 tv_zero(&s->logs.tv_request);
146 s->logs.t_queue = -1;
147 s->logs.t_connect = -1;
148 s->logs.t_data = -1;
149 s->logs.t_close = 0;
150 s->logs.bytes_in = s->logs.bytes_out = 0;
Patrick Hemmerffe5e8c2018-05-11 12:52:31 -0400151 s->logs.prx_queue_pos = 0; /* we get the number of pending conns before us */
152 s->logs.srv_queue_pos = 0; /* we will get this number soon */
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200153
154 /* default logging function */
155 s->do_log = strm_log;
156
157 /* default error reporting function, may be changed by analysers */
158 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200159
160 /* Initialise the current rule list pointer to NULL. We are sure that
161 * any rulelist match the NULL pointer.
162 */
163 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200164 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200165
Willy Tarreaua68f7622015-09-21 17:48:24 +0200166 /* Copy SC counters for the stream. We don't touch refcounts because
167 * any reference we have is inherited from the session. Since the stream
168 * doesn't exist without the session, the session's existence guarantees
169 * we don't lose the entry. During the store operation, the stream won't
170 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200171 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200172 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200173
174 s->sess = sess;
175 s->si[0].flags = SI_FL_NONE;
176 s->si[1].flags = SI_FL_ISBACK;
177
Willy Tarreau90a7c032018-09-05 16:21:29 +0200178 s->uniq_id = HA_ATOMIC_XADD(&global.req_count, 1);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200179
Willy Tarreau87b09662015-04-03 00:22:06 +0200180 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200181 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100182
183 LIST_INIT(&s->buffer_wait.list);
184 s->buffer_wait.target = s;
Willy Tarreaub882dd82018-11-06 15:50:21 +0100185 s->buffer_wait.wakeup_cb = stream_buf_available;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200186
Willy Tarreaue7dff022015-04-03 01:14:29 +0200187 s->flags |= SF_INITIALIZED;
William Lallemandcf62f7e2018-10-26 14:47:40 +0200188 s->pcli_next_pid = 0;
Willy Tarreau2542b532012-08-31 16:01:23 +0200189 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200190
Emeric Brunc60def82017-09-27 14:59:38 +0200191 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200192 goto out_fail_alloc;
193
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200194 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100195 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200196 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200197 t->context = s;
198 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200199 if (sess->listener)
200 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200201
Willy Tarreau87b09662015-04-03 00:22:06 +0200202 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200203 * This changes later when switching rules are executed or
204 * when the default backend is assigned.
205 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200206 s->be = sess->fe;
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200207 s->req.buf = BUF_NULL;
208 s->res.buf = BUF_NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200209 s->req_cap = NULL;
210 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200211
Willy Tarreauebcd4842015-06-19 11:59:02 +0200212 /* Initialise all the variables contexts even if not used.
213 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200214 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200215 vars_init(&s->vars_txn, SCOPE_TXN);
216 vars_init(&s->vars_reqres, SCOPE_REQ);
217
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200218 /* this part should be common with other protocols */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200219 if (si_reset(&s->si[0]) < 0)
220 goto out_fail_alloc;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200221 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100222 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200223
Willy Tarreau984fca92017-12-20 16:31:43 +0100224 if (cs && cs->conn->mux && cs->conn->mux->flags & MX_FL_CLEAN_ABRT)
225 s->si[0].flags |= SI_FL_CLEAN_ABRT;
226
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200227 /* attach the incoming connection to the stream interface now. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200228 if (cs)
229 si_attach_cs(&s->si[0], cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200230 else if (appctx)
231 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200232
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200233 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200234 s->si[0].flags |= SI_FL_INDEP_STR;
235
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200236 /* pre-initialize the other side's stream interface to an INIT state. The
237 * callbacks will be initialized before attempting to connect.
238 */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200239 if (si_reset(&s->si[1]) < 0)
240 goto out_fail_alloc_si1;
Hongbo Longe39683c2017-03-10 18:41:51 +0100241 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200242
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200243 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200244 s->si[1].flags |= SI_FL_INDEP_STR;
245
Willy Tarreau87b09662015-04-03 00:22:06 +0200246 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100247 s->target = sess->listener ? sess->listener->default_target : NULL;
248
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200249 s->pend_pos = NULL;
Patrick Hemmer268a7072018-05-11 12:52:31 -0400250 s->priority_class = 0;
251 s->priority_offset = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200252
253 /* init store persistence */
254 s->store_count = 0;
255
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100256 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100257 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100258 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaue223e3b2017-11-18 15:39:10 +0100259
260 if (!sess->fe->fe_req_ana) {
261 channel_auto_connect(&s->req); /* don't wait to establish connection */
262 channel_auto_close(&s->req); /* let the producer forward close requests */
263 }
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200264
265 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100266 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100267 s->req.rex = TICK_ETERNITY;
268 s->req.wex = TICK_ETERNITY;
269 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200270
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100271 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100272 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100273 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200274
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200275 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100276 s->req.flags |= CF_NEVER_WAIT;
277 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200278 }
279
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200280 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100281 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100282 s->res.rex = TICK_ETERNITY;
283 s->res.wex = TICK_ETERNITY;
284 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200285
Willy Tarreaueee5b512015-04-03 23:46:31 +0200286 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100287 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100288
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100289 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200290 LIST_ADDQ(&streams, &s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100291 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200292
Christopher Faulet92d36382015-11-05 13:35:03 +0100293 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200294 goto out_fail_accept;
295
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200296 /* finish initialization of the accepted file descriptor */
Olivier Houchard53216e72018-10-10 15:46:36 +0200297 if (appctx)
Willy Tarreau0cd3bd62018-11-06 18:46:37 +0100298 si_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200299
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200300 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200301 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200302
303 /* it is important not to call the wakeup function directly but to
304 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200305 * priorities to tasks. Using multi thread we must be sure that
306 * stream is fully initialized before calling task_wakeup. So
307 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200308 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200309 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200310
311 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200312 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100313 flt_stream_release(s, 0);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200314 task_free(t);
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200315 tasklet_free(s->si[1].wait_event.task);
Willy Tarreaue5f229e2018-10-15 11:08:55 +0200316 LIST_DEL(&s->list);
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200317out_fail_alloc_si1:
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200318 tasklet_free(s->si[0].wait_event.task);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200319 out_fail_alloc:
Willy Tarreaubafbe012017-11-24 17:34:44 +0100320 pool_free(pool_head_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200321 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200322}
323
Willy Tarreaubaaee002006-06-26 02:48:02 +0200324/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200325 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200326 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200327static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200328{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200329 struct session *sess = strm_sess(s);
330 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100331 struct bref *bref, *back;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200332 struct conn_stream *cli_cs = objt_cs(s->si[0].end);
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100333 int must_free_sess;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200334 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100335
Willy Tarreaud0ad4a82018-07-25 11:13:53 +0200336 pendconn_free(s);
Willy Tarreau922a8062008-12-04 09:33:58 +0100337
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100338 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200339 if (s->flags & SF_CURR_SESS) {
340 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200341 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau1e62de62008-11-11 20:20:02 +0100342 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100343 if (may_dequeue_tasks(objt_server(s->target), s->be))
344 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100345 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100346
Willy Tarreau7c669d72008-06-20 15:04:11 +0200347 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200348 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200349 * it should normally be only the same as the one above,
350 * so this should not happen in fact.
351 */
352 sess_change_server(s, NULL);
353 }
354
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100355 if (s->req.pipe)
356 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100357
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100358 if (s->res.pipe)
359 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100360
Willy Tarreaubf883e02014-11-25 21:10:35 +0100361 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100362 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100363 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100364 LIST_DEL(&s->buffer_wait.list);
365 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100366 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100367 }
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200368 if (s->req.buf.size || s->res.buf.size) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100369 b_drop(&s->req.buf);
370 b_drop(&s->res.buf);
Olivier Houchard673867c2018-05-25 16:58:52 +0200371 offer_buffers(NULL, tasks_run_queue);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100372 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200373
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100374 hlua_ctx_destroy(s->hlua);
375 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200376 if (s->txn)
377 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100378
Willy Tarreau1e954912012-10-12 17:50:05 +0200379 /* ensure the client-side transport layer is destroyed */
Willy Tarreau32560732017-10-08 11:33:44 +0200380 if (cli_cs)
381 cs_close(cli_cs);
Willy Tarreau1e954912012-10-12 17:50:05 +0200382
Willy Tarreaua4cda672010-06-06 18:28:49 +0200383 for (i = 0; i < s->store_count; i++) {
384 if (!s->store[i].ts)
385 continue;
386 stksess_free(s->store[i].table, s->store[i].ts);
387 s->store[i].ts = NULL;
388 }
389
Willy Tarreaueee5b512015-04-03 23:46:31 +0200390 if (s->txn) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100391 pool_free(pool_head_hdr_idx, s->txn->hdr_idx.v);
392 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200393 s->txn = NULL;
394 }
395
Christopher Fauletd7c91962015-04-30 11:48:27 +0200396 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100397 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200398
Willy Tarreau92fb9832007-10-16 17:34:28 +0200399 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100400 pool_free(fe->rsp_cap_pool, s->res_cap);
401 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200402 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100403
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200404 /* Cleanup all variable contexts. */
Willy Tarreaucda7f3f2018-10-28 13:44:36 +0100405 if (!LIST_ISEMPTY(&s->vars_txn.head))
406 vars_prune(&s->vars_txn, s->sess, s);
407 if (!LIST_ISEMPTY(&s->vars_reqres.head))
408 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200409
Willy Tarreau87b09662015-04-03 00:22:06 +0200410 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200411
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100412 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100413 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100414 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200415 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100416 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100417 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100418 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200419 if (s->list.n != &streams)
420 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100421 bref->ref = s->list.n;
422 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100423 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100424 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200425
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100426 /* applets do not release session yet */
427 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
428
Olivier Houchard4fdec7a2018-10-11 17:09:14 +0200429
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200430 si_release_endpoint(&s->si[1]);
431 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200432
Olivier Houchardd7bd3e32018-10-18 16:22:02 +0200433 tasklet_free(s->si[0].wait_event.task);
434 tasklet_free(s->si[1].wait_event.task);
435
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100436 if (must_free_sess)
437 session_free(sess);
438
Willy Tarreaubafbe012017-11-24 17:34:44 +0100439 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200440
441 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200442 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100443 pool_flush(pool_head_buffer);
444 pool_flush(pool_head_http_txn);
445 pool_flush(pool_head_hdr_idx);
446 pool_flush(pool_head_requri);
447 pool_flush(pool_head_capture);
448 pool_flush(pool_head_stream);
449 pool_flush(pool_head_session);
450 pool_flush(pool_head_connection);
451 pool_flush(pool_head_pendconn);
452 pool_flush(fe->req_cap_pool);
453 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200454 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200455}
456
Willy Tarreau656859d2014-11-25 19:46:36 +0100457
Willy Tarreau87b09662015-04-03 00:22:06 +0200458/* Allocates a work buffer for stream <s>. It is meant to be called inside
459 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200460 * to work fine, which is the response buffer so that an error message may be
461 * built and returned. Response buffers may be allocated from the reserve, this
462 * is critical to ensure that a response may always flow and will never block a
463 * server from releasing a connection. Returns 0 in case of failure, non-zero
464 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100465 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100466static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100467{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100468 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100469 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100470 LIST_DEL(&s->buffer_wait.list);
471 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100472 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100473 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100474
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200475 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100476 return 1;
477
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100478 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100479 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100480 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100481 return 0;
482}
483
484/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100485 * update() functions. It will try to wake up as many tasks/applets as the
486 * number of buffers that it releases. In practice, most often streams are
487 * blocked on a single buffer, so it makes sense to try to wake two up when two
488 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100489 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200490void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100491{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100492 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100493
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200494 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100495 offer = 1;
496 b_free(&s->req.buf);
497 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200498 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100499 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100500 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100501 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100502
Willy Tarreaubf883e02014-11-25 21:10:35 +0100503 /* if we're certain to have at least 1 buffer available, and there is
504 * someone waiting, we can wake up a waiter and offer them.
505 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100506 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200507 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100508}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200509
510/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200511int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200512{
Willy Tarreau87b09662015-04-03 00:22:06 +0200513 LIST_INIT(&streams);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100514 HA_SPIN_INIT(&streams_lock);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100515 pool_head_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
516 return pool_head_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200517}
518
Willy Tarreau87b09662015-04-03 00:22:06 +0200519void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100520{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200521 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100522 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200523 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200524 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100525 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100526
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100527 bytes = s->req.total - s->logs.bytes_in;
528 s->logs.bytes_in = s->req.total;
529 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200530 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
531 HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100532
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100533 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200534 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200535
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200536 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200537 HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200538
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100539 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200540 struct stkctr *stkctr = &s->stkctr[i];
541
Emeric Brun819fc6f2017-06-13 19:37:32 +0200542 ts = stkctr_entry(stkctr);
543 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200544 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200545 ts = stkctr_entry(stkctr);
546 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200547 continue;
548 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200549
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100550 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200551 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200552 if (ptr1)
553 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200554
Emeric Brun819fc6f2017-06-13 19:37:32 +0200555 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200556 if (ptr2)
557 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200558 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100559 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200560
561 /* If data was modified, we need to touch to re-schedule sync */
562 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200563 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100564 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100565 }
566
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100567 bytes = s->res.total - s->logs.bytes_out;
568 s->logs.bytes_out = s->res.total;
569 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200570 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
571 HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100572
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100573 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200574 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200575
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200576 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200577 HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200578
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100579 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200580 struct stkctr *stkctr = &s->stkctr[i];
581
Emeric Brun819fc6f2017-06-13 19:37:32 +0200582 ts = stkctr_entry(stkctr);
583 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200584 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200585 ts = stkctr_entry(stkctr);
586 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200587 continue;
588 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200589
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100590 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200591 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200592 if (ptr1)
593 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200594
Emeric Brun819fc6f2017-06-13 19:37:32 +0200595 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200596 if (ptr2)
597 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200598 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100599 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200600
601 /* If data was modified, we need to touch to re-schedule sync */
602 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200603 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100604 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100605 }
606}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200607
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100608/* This function is called with (si->state == SI_ST_CON) meaning that a
609 * connection was attempted and that the file descriptor is already allocated.
610 * We must check for establishment, error and abort. Possible output states
611 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
612 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200613 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100614 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200615static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100616{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100617 struct stream_interface *si = &s->si[1];
618 struct channel *req = &s->req;
619 struct channel *rep = &s->res;
Willy Tarreaua553ae92017-10-05 18:52:17 +0200620 struct conn_stream *srv_cs = __objt_cs(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100621
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100622 /* If we got an error, or if nothing happened and the connection timed
623 * out, we must give up. The CER state handler will take care of retry
624 * attempts and error reports.
625 */
626 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800627 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100628 /* Some data were sent past the connection establishment,
629 * so we need to pretend we're established to log correctly
630 * and let later states handle the failure.
631 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100632 si->state = SI_ST_EST;
633 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100634 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100635 return 1;
636 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100637 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100638 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100639
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200640 /* XXX cognet: do we really want to kill the connection here ?
641 * Probably not for multiple streams.
642 */
Willy Tarreaua553ae92017-10-05 18:52:17 +0200643 cs_close(srv_cs);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100644
645 if (si->err_type)
646 return 0;
647
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100648 if (si->flags & SI_FL_ERR)
649 si->err_type = SI_ET_CONN_ERR;
650 else
651 si->err_type = SI_ET_CONN_TO;
652 return 0;
653 }
654
655 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800656 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100657 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200658 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
Willy Tarreauede3d882018-10-24 17:17:56 +0200659 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100660 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100661 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200662 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100663 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100664 if (s->srv_error)
665 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100666 return 1;
667 }
668
669 /* we need to wait a bit more if there was no activity either */
Willy Tarreauede3d882018-10-24 17:17:56 +0200670 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100671 return 1;
672
673 /* OK, this means that a connection succeeded. The caller will be
674 * responsible for handling the transition from CON to EST.
675 */
Willy Tarreauf26c26c2018-11-12 16:11:08 +0100676 si_want_put(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100677 si->state = SI_ST_EST;
678 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100679 return 1;
680}
681
682/* This function is called with (si->state == SI_ST_CER) meaning that a
683 * previous connection attempt has failed and that the file descriptor
684 * has already been released. Possible causes include asynchronous error
685 * notification and time out. Possible output states are SI_ST_CLO when
686 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
687 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
688 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
689 * marked as in error state. It returns 0.
690 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200691static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100692{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100693 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200694 struct conn_stream *cs = objt_cs(si->end);
695 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100696
Willy Tarreau87b09662015-04-03 00:22:06 +0200697 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100698 if (objt_server(s->target)) {
699 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100700
Willy Tarreaue7dff022015-04-03 01:14:29 +0200701 if (s->flags & SF_CURR_SESS) {
702 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200703 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100704 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200705
706 if ((si->flags & SI_FL_ERR) &&
707 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
708 /* We tried to connect to a server which is configured
709 * with "verify required" and which doesn't have the
710 * "verifyhost" directive. The server presented a wrong
711 * certificate (a certificate for an unexpected name),
712 * which implies that we have used SNI in the handshake,
713 * and that the server doesn't have the associated cert
714 * and presented a default one.
715 *
716 * This is a serious enough issue not to retry. It's
717 * especially important because this wrong name might
718 * either be the result of a configuration error, and
719 * retrying will only hammer the server, or is caused
720 * by the use of a wrong SNI value, most likely
721 * provided by the client and we don't want to let the
722 * client provoke retries.
723 */
724 si->conn_retries = 0;
725 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100726 }
727
728 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200729 si->conn_retries--;
730 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100731 if (!si->err_type) {
732 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100733 }
734
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100735 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200736 HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200737 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100738 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100739 if (may_dequeue_tasks(objt_server(s->target), s->be))
740 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100741
742 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200743 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100744 s->req.flags |= CF_WRITE_ERROR;
745 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100746
747 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100748 if (s->srv_error)
749 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100750 return 0;
751 }
752
753 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700754 * retry on another server. By default this redispatch occurs on the
755 * last retry, but if configured we allow redispatches to occur on
756 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200757 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100758 * bit to ignore any persistence cookie. We won't count a retry nor a
759 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200760 * If the connection is not persistent, the balancing algorithm is not
761 * determinist (round robin) and there is more than one active server,
762 * we accept to perform an immediate redispatch without waiting since
763 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100764 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200765 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700766 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200767 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100768 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700769 ((s->be->conn_retries - si->conn_retries) %
770 s->be->redispatch_after == 0)) ||
771 ((s->be->redispatch_after < 0) &&
772 ((s->be->conn_retries - si->conn_retries) %
773 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200774 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700775 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100776 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100777 if (may_dequeue_tasks(objt_server(s->target), s->be))
778 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100779
Willy Tarreaue7dff022015-04-03 01:14:29 +0200780 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100781 si->state = SI_ST_REQ;
782 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100783 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200784 HA_ATOMIC_ADD(&objt_server(s->target)->counters.retries, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200785 HA_ATOMIC_ADD(&s->be->be_counters.retries, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100786 si->state = SI_ST_ASS;
787 }
788
789 if (si->flags & SI_FL_ERR) {
790 /* The error was an asynchronous connection error, and we will
791 * likely have to retry connecting to the same server, most
792 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200793 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100794 */
795
Willy Tarreaub0290662014-06-13 17:04:44 +0200796 int delay = 1000;
797
798 if (s->be->timeout.connect && s->be->timeout.connect < delay)
799 delay = s->be->timeout.connect;
800
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100801 if (!si->err_type)
802 si->err_type = SI_ET_CONN_ERR;
803
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200804 /* only wait when we're retrying on the same server */
805 if (si->state == SI_ST_ASS ||
806 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
807 (s->be->srv_act <= 1)) {
808 si->state = SI_ST_TAR;
809 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
810 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100811 return 0;
812 }
813 return 0;
814}
815
816/*
817 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200818 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200819 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100820 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200821static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100822{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100823 struct stream_interface *si = &s->si[1];
824 struct channel *req = &s->req;
825 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100826
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100827 /* First, centralize the timers information */
828 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
829 si->exp = TICK_ETERNITY;
830
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100831 if (objt_server(s->target))
832 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100833
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100834 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100835 /* if the user wants to log as soon as possible, without counting
836 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200837 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau66425e32018-07-25 06:55:12 +0200838 /* note: no pend_pos here, session is established */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100839 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100840 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100841 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100842 }
843 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100844 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100845 }
846
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100847 if (!(s->flags & SF_TUNNEL)) {
848 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100849
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100850 /* Be sure to filter response headers if the backend is an HTTP proxy
851 * and if there are filters attached to the stream. */
852 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
853 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
854 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100855
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200856 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200857 if (req->flags & CF_WAKE_CONNECT) {
858 req->flags |= CF_WAKE_ONCE;
859 req->flags &= ~CF_WAKE_CONNECT;
860 }
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200861 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200862 /* real connections have timeouts */
863 req->wto = s->be->timeout.server;
864 rep->rto = s->be->timeout.server;
865 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100866 req->wex = TICK_ETERNITY;
867}
868
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700869/* Check if the connection request is in such a state that it can be aborted. */
870static int check_req_may_abort(struct channel *req, struct stream *s)
871{
872 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100873 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100874 (channel_is_empty(req) ||
875 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700876}
877
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100878/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
879 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100880 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
881 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
882 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100883 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200884static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100885{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100886 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100887 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100888 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100889
Christopher Faulet45073512018-07-20 10:16:29 +0200890 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%lu rqt=%lu rph=%lu rpt=%lu cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100891 now_ms, __FUNCTION__,
892 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400893 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100894 req->rex, s->res.wex,
895 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200896 ci_data(req), co_data(req), ci_data(&s->res), co_data(&s->res), s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100897
898 if (si->state == SI_ST_ASS) {
899 /* Server assigned to connection request, we have to try to connect now */
900 int conn_err;
901
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700902 /* Before we try to initiate the connection, see if the
903 * request may be aborted instead.
904 */
905 if (check_req_may_abort(req, s)) {
906 si->err_type |= SI_ET_CONN_ABRT;
907 goto abort_connection;
908 }
909
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100910 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100911 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100912
Willy Tarreaue7dff022015-04-03 01:14:29 +0200913 if (conn_err == SF_ERR_NONE) {
Olivier Houchard85b73e92018-10-21 03:18:11 +0200914 struct connection *conn;
915
916 conn = cs_conn(objt_cs(si->end));
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100917 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100918 if (srv)
919 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500920 if (srv)
921 srv_set_sess_last(srv);
Olivier Houchard85b73e92018-10-21 03:18:11 +0200922 /* If we're retrying to connect to the server, and
923 * somebody subscribed to recv or send events, we have
924 * to make sure the polling is active on the new fd.
925 */
926 if (conn->send_wait)
927 conn_xprt_want_send(conn);
928 if (conn->recv_wait)
929 conn_xprt_want_recv(conn);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100930 return;
931 }
932
933 /* We have received a synchronous error. We might have to
934 * abort, retry immediately or redispatch.
935 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200936 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100937 if (!si->err_type) {
938 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100939 }
940
Willy Tarreau827aee92011-03-10 16:55:02 +0100941 if (srv)
942 srv_inc_sess_ctr(srv);
943 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500944 srv_set_sess_last(srv);
945 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200946 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200947 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100948
Willy Tarreau87b09662015-04-03 00:22:06 +0200949 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100950 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100951 if (may_dequeue_tasks(srv, s->be))
952 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100953
954 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200955 si_shutr(si);
956 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100957 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100958
959 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
960
Willy Tarreau66425e32018-07-25 06:55:12 +0200961 /* we may need to know the position in the queue for logging */
962 pendconn_cond_unlink(s->pend_pos);
963
Willy Tarreau87b09662015-04-03 00:22:06 +0200964 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100965 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100966 if (s->srv_error)
967 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100968 return;
969 }
970
971 /* We are facing a retryable error, but we don't want to run a
972 * turn-around now, as the problem is likely a source port
973 * allocation problem, so we want to retry now.
974 */
975 si->state = SI_ST_CER;
976 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100977 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100978 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
979 return;
980 }
981 else if (si->state == SI_ST_QUE) {
982 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +0100983 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100984 /* The connection is not in the queue anymore. Either
985 * we have a server connection slot available and we
986 * go directly to the assigned state, or we need to
987 * load-balance first and go to the INI state.
988 */
989 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200990 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100991 si->state = SI_ST_REQ;
992 else {
993 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
994 si->state = SI_ST_ASS;
995 }
996 return;
997 }
998
999 /* Connection request still in queue... */
1000 if (si->flags & SI_FL_EXP) {
1001 /* ... and timeout expired */
1002 si->exp = TICK_ETERNITY;
1003 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001004
1005 /* we may need to know the position in the queue for logging */
1006 pendconn_cond_unlink(s->pend_pos);
1007
Willy Tarreau827aee92011-03-10 16:55:02 +01001008 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001009 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001010 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +02001011 si_shutr(si);
1012 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001013 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001014 if (!si->err_type)
1015 si->err_type = SI_ET_QUEUE_TO;
1016 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001017 if (s->srv_error)
1018 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001019 return;
1020 }
1021
1022 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001023 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001024 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001025
1026 /* we may need to know the position in the queue for logging */
1027 pendconn_cond_unlink(s->pend_pos);
1028
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001029 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001030 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001031 }
1032
1033 /* Nothing changed */
1034 return;
1035 }
1036 else if (si->state == SI_ST_TAR) {
1037 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001038 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001039 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001040 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001041 }
1042
1043 if (!(si->flags & SI_FL_EXP))
1044 return; /* still in turn-around */
1045
1046 si->exp = TICK_ETERNITY;
1047
Willy Tarreau87b09662015-04-03 00:22:06 +02001048 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001049 * marked "assigned".
1050 * FIXME: Should we force a redispatch attempt when the server is down ?
1051 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001052 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001053 si->state = SI_ST_ASS;
1054 else
1055 si->state = SI_ST_REQ;
1056 return;
1057 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001058 return;
1059
1060abort_connection:
1061 /* give up */
1062 si->exp = TICK_ETERNITY;
1063 si_shutr(si);
1064 si_shutw(si);
1065 si->state = SI_ST_CLO;
1066 if (s->srv_error)
1067 s->srv_error(s, si);
1068 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001069}
1070
Willy Tarreau87b09662015-04-03 00:22:06 +02001071/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001072 * also counts a failed request if the server state has not reached the request
1073 * stage.
1074 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001075static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001076{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001077 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +09001078 if (s->si[1].state < SI_ST_REQ) {
1079
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001080 HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001081 if (strm_li(s) && strm_li(s)->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +02001082 HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001083
Willy Tarreaue7dff022015-04-03 01:14:29 +02001084 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001085 }
1086 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001087 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +09001088 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001089 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001090 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001091 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001092 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001093 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001094 }
1095}
1096
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001097/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001098 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1099 * a real connection to a server, indicating that a server has been assigned,
1100 * or SI_ST_EST for a successful connection to an applet. It may also return
1101 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001102 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001103static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001104{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001105 struct stream_interface *si = &s->si[1];
1106
Christopher Faulet45073512018-07-20 10:16:29 +02001107 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%lu rqt=%lu rph=%lu rpt=%lu cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001108 now_ms, __FUNCTION__,
1109 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001110 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001111 s->req.rex, s->res.wex,
1112 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001113 ci_data(&s->req), co_data(&s->req), ci_data(&s->res), co_data(&s->res), s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001114
1115 if (si->state != SI_ST_REQ)
1116 return;
1117
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001118 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1119 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001120 struct appctx *appctx = objt_appctx(si->end);
1121
1122 if (!appctx || appctx->applet != __objt_applet(s->target))
1123 appctx = stream_int_register_handler(si, objt_applet(s->target));
1124
1125 if (!appctx) {
1126 /* No more memory, let's immediately abort. Force the
1127 * error code to ignore the ERR_LOCAL which is not a
1128 * real error.
1129 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001130 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001131
1132 si_shutr(si);
1133 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001134 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001135 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001136 si->state = SI_ST_CLO;
1137 if (s->srv_error)
1138 s->srv_error(s, si);
1139 return;
1140 }
1141
Willy Tarreauee8269e2017-11-23 17:34:29 +01001142 if (tv_iszero(&s->logs.tv_request))
1143 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001144 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001145 si->state = SI_ST_EST;
1146 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001147 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001148 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001149 return;
1150 }
1151
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001152 /* Try to assign a server */
1153 if (srv_redispatch_connect(s) != 0) {
1154 /* We did not get a server. Either we queued the
1155 * connection request, or we encountered an error.
1156 */
1157 if (si->state == SI_ST_QUE)
1158 return;
1159
1160 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001161 si_shutr(si);
1162 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001163 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001164 if (!si->err_type)
1165 si->err_type = SI_ET_CONN_OTHER;
1166 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001167 if (s->srv_error)
1168 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001169 return;
1170 }
1171
1172 /* The server is assigned */
1173 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1174 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001175 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001176}
1177
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001178/* This function parses the use-service action ruleset. It executes
1179 * the associated ACL and set an applet as a stream or txn final node.
1180 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1181 * consistent state. It returns ACT_RET_STOP in succes case because
1182 * use-service must be a terminal action. Returns ACT_RET_YIELD
1183 * if the initialisation function require more data.
1184 */
1185enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1186 struct session *sess, struct stream *s, int flags)
1187
1188{
1189 struct appctx *appctx;
1190
1191 /* Initialises the applet if it is required. */
1192 if (flags & ACT_FLAG_FIRST) {
1193 /* Register applet. this function schedules the applet. */
1194 s->target = &rule->applet.obj_type;
1195 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1196 return ACT_RET_ERR;
1197
1198 /* Initialise the context. */
1199 appctx = si_appctx(&s->si[1]);
1200 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1201 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001202
1203 /* enable the minimally required analyzers in case of HTTP
1204 * keep-alive to properly handle keep-alive and compression
1205 * on the HTTP response.
1206 */
1207 if (rule->from == ACT_F_HTTP_REQ) {
1208 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1209 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1210 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001211 }
1212 else
1213 appctx = si_appctx(&s->si[1]);
1214
1215 /* Stops the applet sheduling, in case of the init function miss
1216 * some data.
1217 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001218 si_stop_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001219
1220 /* Call initialisation. */
1221 if (rule->applet.init)
1222 switch (rule->applet.init(appctx, px, s)) {
1223 case 0: return ACT_RET_ERR;
1224 case 1: break;
1225 default: return ACT_RET_YIELD;
1226 }
1227
1228 /* Now we can schedule the applet. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001229 si_cant_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001230 appctx_wakeup(appctx);
1231
1232 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001233 HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001234
1235 /* The flag SF_ASSIGNED prevent from server assignment. */
1236 s->flags |= SF_ASSIGNED;
1237
1238 return ACT_RET_STOP;
1239}
1240
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001241/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001242 * if appropriate. The default_backend rule is also considered, then the
1243 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001244 * It returns 1 if the processing can continue on next analysers, or zero if it
1245 * either needs more data or wants to immediately abort the request.
1246 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001247static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001248{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001249 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001250 struct session *sess = s->sess;
1251 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001252
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001253 req->analysers &= ~an_bit;
1254 req->analyse_exp = TICK_ETERNITY;
1255
Christopher Faulet45073512018-07-20 10:16:29 +02001256 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001257 now_ms, __FUNCTION__,
1258 s,
1259 req,
1260 req->rex, req->wex,
1261 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001262 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001263 req->analysers);
1264
1265 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001266 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001267 struct switching_rule *rule;
1268
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001269 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001270 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001271
Willy Tarreauf51658d2014-04-23 01:21:56 +02001272 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001273 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001274 ret = acl_pass(ret);
1275 if (rule->cond->pol == ACL_COND_UNLESS)
1276 ret = !ret;
1277 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001278
1279 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001280 /* If the backend name is dynamic, try to resolve the name.
1281 * If we can't resolve the name, or if any error occurs, break
1282 * the loop and fallback to the default backend.
1283 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001284 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001285
1286 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001287 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001288
1289 tmp = alloc_trash_chunk();
1290 if (!tmp)
1291 goto sw_failed;
1292
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001293 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1294 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001295
1296 free_trash_chunk(tmp);
1297 tmp = NULL;
1298
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001299 if (!backend)
1300 break;
1301 }
1302 else
1303 backend = rule->be.backend;
1304
Willy Tarreau87b09662015-04-03 00:22:06 +02001305 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001306 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001307 break;
1308 }
1309 }
1310
1311 /* To ensure correct connection accounting on the backend, we
1312 * have to assign one if it was not set (eg: a listen). This
1313 * measure also takes care of correctly setting the default
1314 * backend if any.
1315 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001316 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001317 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001318 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001319 }
1320
Willy Tarreaufb356202010-08-03 14:02:05 +02001321 /* 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 +02001322 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001323 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1324 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001325 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001326 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001327
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001328 /* 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 +02001329 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001330 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001331 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001332 int ret = 1;
1333
1334 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001335 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 +01001336 ret = acl_pass(ret);
1337 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1338 ret = !ret;
1339 }
1340
1341 if (ret) {
1342 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001343 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001344 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001345 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001346 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001347 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001348 break;
1349 }
1350 }
1351
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001352 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001353
1354 sw_failed:
1355 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001356 channel_abort(&s->req);
1357 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001358
Willy Tarreaue7dff022015-04-03 01:14:29 +02001359 if (!(s->flags & SF_ERR_MASK))
1360 s->flags |= SF_ERR_RESOURCE;
1361 if (!(s->flags & SF_FINST_MASK))
1362 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001363
Willy Tarreaueee5b512015-04-03 23:46:31 +02001364 if (s->txn)
1365 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001366 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001367 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001368 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001369}
1370
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001371/* This stream analyser works on a request. It applies all use-server rules on
1372 * it then returns 1. The data must already be present in the buffer otherwise
1373 * they won't match. It always returns 1.
1374 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001375static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001376{
1377 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001378 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001379 struct server_rule *rule;
1380
Christopher Faulet45073512018-07-20 10:16:29 +02001381 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%lu analysers=%02x\n",
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001382 now_ms, __FUNCTION__,
1383 s,
1384 req,
1385 req->rex, req->wex,
1386 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001387 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001388 req->analysers);
1389
Willy Tarreaue7dff022015-04-03 01:14:29 +02001390 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001391 list_for_each_entry(rule, &px->server_rules, list) {
1392 int ret;
1393
Willy Tarreau192252e2015-04-04 01:47:55 +02001394 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001395 ret = acl_pass(ret);
1396 if (rule->cond->pol == ACL_COND_UNLESS)
1397 ret = !ret;
1398
1399 if (ret) {
1400 struct server *srv = rule->srv.ptr;
1401
Emeric Brun52a91d32017-08-31 14:41:55 +02001402 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001403 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001404 (s->flags & SF_FORCE_PRST)) {
1405 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001406 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001407 break;
1408 }
1409 /* if the server is not UP, let's go on with next rules
1410 * just in case another one is suited.
1411 */
1412 }
1413 }
1414 }
1415
1416 req->analysers &= ~an_bit;
1417 req->analyse_exp = TICK_ETERNITY;
1418 return 1;
1419}
1420
Emeric Brun1d33b292010-01-04 15:47:17 +01001421/* This stream analyser works on a request. It applies all sticking rules on
1422 * it then returns 1. The data must already be present in the buffer otherwise
1423 * they won't match. It always returns 1.
1424 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001425static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001426{
1427 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001428 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001429 struct sticking_rule *rule;
1430
Christopher Faulet45073512018-07-20 10:16:29 +02001431 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001432 now_ms, __FUNCTION__,
1433 s,
1434 req,
1435 req->rex, req->wex,
1436 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001437 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001438 req->analysers);
1439
1440 list_for_each_entry(rule, &px->sticking_rules, list) {
1441 int ret = 1 ;
1442 int i;
1443
Willy Tarreau9667a802013-12-09 12:52:13 +01001444 /* Only the first stick store-request of each table is applied
1445 * and other ones are ignored. The purpose is to allow complex
1446 * configurations which look for multiple entries by decreasing
1447 * order of precision and to stop at the first which matches.
1448 * An example could be a store of the IP address from an HTTP
1449 * header first, then from the source if not found.
1450 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001451 for (i = 0; i < s->store_count; i++) {
1452 if (rule->table.t == s->store[i].table)
1453 break;
1454 }
1455
1456 if (i != s->store_count)
1457 continue;
1458
1459 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001460 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001461 ret = acl_pass(ret);
1462 if (rule->cond->pol == ACL_COND_UNLESS)
1463 ret = !ret;
1464 }
1465
1466 if (ret) {
1467 struct stktable_key *key;
1468
Willy Tarreau192252e2015-04-04 01:47:55 +02001469 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 +01001470 if (!key)
1471 continue;
1472
1473 if (rule->flags & STK_IS_MATCH) {
1474 struct stksess *ts;
1475
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001476 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001477 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001478 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001479 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001480
1481 /* srv found in table */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001482 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001483 ptr = __stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001484 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001485 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun1d33b292010-01-04 15:47:17 +01001486 if (node) {
1487 struct server *srv;
1488
1489 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001490 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001491 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001492 (s->flags & SF_FORCE_PRST)) {
1493 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001494 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001495 }
1496 }
1497 }
Emeric Brun819fc6f2017-06-13 19:37:32 +02001498 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001499 }
1500 }
1501 if (rule->flags & STK_IS_STORE) {
1502 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1503 struct stksess *ts;
1504
1505 ts = stksess_new(rule->table.t, key);
1506 if (ts) {
1507 s->store[s->store_count].table = rule->table.t;
1508 s->store[s->store_count++].ts = ts;
1509 }
1510 }
1511 }
1512 }
1513 }
1514
1515 req->analysers &= ~an_bit;
1516 req->analyse_exp = TICK_ETERNITY;
1517 return 1;
1518}
1519
1520/* This stream analyser works on a response. It applies all store rules on it
1521 * then returns 1. The data must already be present in the buffer otherwise
1522 * they won't match. It always returns 1.
1523 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001524static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001525{
1526 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001527 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001528 struct sticking_rule *rule;
1529 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001530 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001531
Christopher Faulet45073512018-07-20 10:16:29 +02001532 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001533 now_ms, __FUNCTION__,
1534 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001535 rep,
1536 rep->rex, rep->wex,
1537 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001538 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001539 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001540
1541 list_for_each_entry(rule, &px->storersp_rules, list) {
1542 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001543
Willy Tarreau9667a802013-12-09 12:52:13 +01001544 /* Only the first stick store-response of each table is applied
1545 * and other ones are ignored. The purpose is to allow complex
1546 * configurations which look for multiple entries by decreasing
1547 * order of precision and to stop at the first which matches.
1548 * An example could be a store of a set-cookie value, with a
1549 * fallback to a parameter found in a 302 redirect.
1550 *
1551 * The store-response rules are not allowed to override the
1552 * store-request rules for the same table, but they may coexist.
1553 * Thus we can have up to one store-request entry and one store-
1554 * response entry for the same table at any time.
1555 */
1556 for (i = nbreq; i < s->store_count; i++) {
1557 if (rule->table.t == s->store[i].table)
1558 break;
1559 }
1560
1561 /* skip existing entries for this table */
1562 if (i < s->store_count)
1563 continue;
1564
Emeric Brun1d33b292010-01-04 15:47:17 +01001565 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001566 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001567 ret = acl_pass(ret);
1568 if (rule->cond->pol == ACL_COND_UNLESS)
1569 ret = !ret;
1570 }
1571
1572 if (ret) {
1573 struct stktable_key *key;
1574
Willy Tarreau192252e2015-04-04 01:47:55 +02001575 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 +01001576 if (!key)
1577 continue;
1578
Willy Tarreau37e340c2013-12-06 23:05:21 +01001579 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001580 struct stksess *ts;
1581
1582 ts = stksess_new(rule->table.t, key);
1583 if (ts) {
1584 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001585 s->store[s->store_count++].ts = ts;
1586 }
1587 }
1588 }
1589 }
1590
1591 /* process store request and store response */
1592 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001593 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001594 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001595
Willy Tarreauc93cd162014-05-13 15:54:22 +02001596 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001597 stksess_free(s->store[i].table, s->store[i].ts);
1598 s->store[i].ts = NULL;
1599 continue;
1600 }
1601
Emeric Brun819fc6f2017-06-13 19:37:32 +02001602 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1603 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001604 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001605 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001606 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001607 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001608
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001609 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001610 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
1611 stktable_data_cast(ptr, server_id) = __objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001612 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001613 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001614 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001615 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001616
1617 rep->analysers &= ~an_bit;
1618 rep->analyse_exp = TICK_ETERNITY;
1619 return 1;
1620}
1621
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001622/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001623 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001624 */
1625#define UPDATE_ANALYSERS(real, list, back, flag) { \
1626 list = (((list) & ~(flag)) | ~(back)) & (real); \
1627 back = real; \
1628 if (!(list)) \
1629 break; \
1630 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1631 continue; \
1632}
1633
Christopher Fauleta9215b72016-05-11 17:06:28 +02001634/* These 2 following macros call an analayzer for the specified channel if the
1635 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001636 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001637 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001638 * AN_REQ/RES_HTTP_XFER_BODY) */
1639#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1640 { \
1641 if ((list) & (flag)) { \
1642 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001643 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001644 break; \
1645 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1646 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001647 if (!flt_post_analyze((strm), (chn), (flag))) \
1648 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001649 } \
1650 else { \
1651 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1652 break; \
1653 } \
1654 UPDATE_ANALYSERS((chn)->analysers, (list), \
1655 (back), (flag)); \
1656 } \
1657 }
1658
1659#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1660 { \
1661 if ((list) & (flag)) { \
1662 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1663 break; \
1664 UPDATE_ANALYSERS((chn)->analysers, (list), \
1665 (back), (flag)); \
1666 } \
1667 }
1668
Willy Tarreau87b09662015-04-03 00:22:06 +02001669/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001670 * then puts it back to the wait queue in a clean state, or cleans up its
1671 * resources if it must be deleted. Returns in <next> the date the task wants
1672 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1673 * nothing too many times, the request and response buffers flags are monitored
1674 * and each function is called only if at least another function has changed at
1675 * least one flag it is interested in.
1676 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001677struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001678{
Willy Tarreau827aee92011-03-10 16:55:02 +01001679 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001680 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001681 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001682 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001683 unsigned int rq_prod_last, rq_cons_last;
1684 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001685 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001686 struct channel *req, *res;
1687 struct stream_interface *si_f, *si_b;
Olivier Houchard0e367bb2018-09-14 19:41:13 +02001688 struct conn_stream *cs;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001689
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001690 activity[tid].stream++;
1691
Willy Tarreau8f128b42014-11-28 15:07:47 +01001692 req = &s->req;
1693 res = &s->res;
1694
1695 si_f = &s->si[0];
1696 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001697
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001698 /* First, attempt to receive pending data from I/O layers */
Olivier Houchard0e367bb2018-09-14 19:41:13 +02001699 cs = objt_cs(si_f->end);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001700 if (cs && !(si_f->wait_event.wait_reason & SUB_CAN_RECV) &&
1701 (!(si_f->flags & SI_FL_WAIT_ROOM) || !c_size(req)))
1702 si_cs_recv(cs);
1703
Olivier Houchard0e367bb2018-09-14 19:41:13 +02001704 cs = objt_cs(si_b->end);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001705 if (cs && !(si_b->wait_event.wait_reason & SUB_CAN_RECV) &&
1706 (!(si_b->flags & SI_FL_WAIT_ROOM) || !c_size(res)))
Olivier Houchard0e367bb2018-09-14 19:41:13 +02001707 si_cs_recv(cs);
Olivier Houchard53216e72018-10-10 15:46:36 +02001708redo:
Olivier Houchardc2aa7112018-09-11 18:27:21 +02001709
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001710 //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 +01001711 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001712
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001713 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001714 if (s->txn)
1715 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001716
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001717 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001718 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1719 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001720
1721 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001722 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1723 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001724
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001725 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001726 si_f->flags |= SI_FL_DONT_WAKE;
1727 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001728
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001729 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001730 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001731
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001732 /* 1a: Check for low level timeouts if needed. We just set a flag on
1733 * stream interfaces when their timeouts have expired.
1734 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001735 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001736 stream_int_check_timeouts(si_f);
1737 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001738
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001739 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001740 * for future reads or writes. Note: this will also concern upper layers
1741 * but we do not touch any other flag. We must be careful and correctly
1742 * detect state changes when calling them.
1743 */
1744
Willy Tarreau8f128b42014-11-28 15:07:47 +01001745 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001746
Willy Tarreau8f128b42014-11-28 15:07:47 +01001747 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1748 si_b->flags |= SI_FL_NOLINGER;
1749 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001750 }
1751
Willy Tarreau8f128b42014-11-28 15:07:47 +01001752 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1753 if (si_f->flags & SI_FL_NOHALF)
1754 si_f->flags |= SI_FL_NOLINGER;
1755 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001756 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001757
Willy Tarreau8f128b42014-11-28 15:07:47 +01001758 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001759
Willy Tarreau8f128b42014-11-28 15:07:47 +01001760 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1761 si_f->flags |= SI_FL_NOLINGER;
1762 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001763 }
1764
Willy Tarreau8f128b42014-11-28 15:07:47 +01001765 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1766 if (si_b->flags & SI_FL_NOHALF)
1767 si_b->flags |= SI_FL_NOLINGER;
1768 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001769 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001770
Christopher Fauleta00d8172016-11-10 14:58:05 +01001771 if (HAS_FILTERS(s))
1772 flt_stream_check_timeouts(s);
1773
Willy Tarreau798f4322012-11-08 14:49:17 +01001774 /* Once in a while we're woken up because the task expires. But
1775 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001776 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001777 * timeout needs to be refreshed.
1778 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001779 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001780 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Willy Tarreauede3d882018-10-24 17:17:56 +02001781 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001782 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001783 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001784 si_f->flags &= ~SI_FL_DONT_WAKE;
1785 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001786 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001787 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001788 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001789
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001790 /* below we may emit error messages so we have to ensure that we have
1791 * our buffers properly allocated.
1792 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001793 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001794 /* No buffer available, we've been subscribed to the list of
1795 * buffer waiters, let's wait for our turn.
1796 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001797 si_f->flags &= ~SI_FL_DONT_WAKE;
1798 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001799 goto update_exp_and_leave;
1800 }
1801
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001802 /* 1b: check for low-level errors reported at the stream interface.
1803 * First we check if it's a retryable error (in which case we don't
1804 * want to tell the buffer). Otherwise we report the error one level
1805 * upper by setting flags into the buffers. Note that the side towards
1806 * the client cannot have connect (hence retryable) errors. Also, the
1807 * connection setup code must be able to deal with any type of abort.
1808 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001809 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001810 if (unlikely(si_f->flags & SI_FL_ERR)) {
1811 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1812 si_shutr(si_f);
1813 si_shutw(si_f);
1814 stream_int_report_error(si_f);
1815 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001816 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1817 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001818 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001819 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001820 if (!(s->flags & SF_ERR_MASK))
1821 s->flags |= SF_ERR_CLICL;
1822 if (!(s->flags & SF_FINST_MASK))
1823 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001824 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001825 }
1826 }
1827
Willy Tarreau8f128b42014-11-28 15:07:47 +01001828 if (unlikely(si_b->flags & SI_FL_ERR)) {
1829 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1830 si_shutr(si_b);
1831 si_shutw(si_b);
1832 stream_int_report_error(si_b);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001833 HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001834 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001835 HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001836 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001837 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1838 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001839 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001840 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001841 if (!(s->flags & SF_ERR_MASK))
1842 s->flags |= SF_ERR_SRVCL;
1843 if (!(s->flags & SF_FINST_MASK))
1844 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001845 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001846 }
1847 /* note: maybe we should process connection errors here ? */
1848 }
1849
Willy Tarreau8f128b42014-11-28 15:07:47 +01001850 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001851 /* we were trying to establish a connection on the server side,
1852 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1853 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001854 if (unlikely(!sess_update_st_con_tcp(s)))
1855 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001856 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001857 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001858
1859 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1860 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1861 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1862 */
1863 }
1864
Willy Tarreau8f128b42014-11-28 15:07:47 +01001865 rq_prod_last = si_f->state;
1866 rq_cons_last = si_b->state;
1867 rp_cons_last = si_f->state;
1868 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001869
1870 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001871 /* Check for connection closure */
1872
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001873 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001874 "[%u] %s:%d: task=%p s=%p, sfl=0x%08x, rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%lu rqt=%lu rph=%lu rpt=%lu cs=%d ss=%d, cet=0x%x set=0x%x retr=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001875 now_ms, __FUNCTION__, __LINE__,
1876 t,
1877 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001878 req, res,
1879 req->rex, res->wex,
1880 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001881 ci_data(req), co_data(req), ci_data(res), co_data(res), si_f->state, si_b->state,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001882 si_f->err_type, si_b->err_type,
1883 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001884
1885 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001886 if (unlikely(si_f->state == SI_ST_DIS))
1887 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001888
1889 /* When a server-side connection is released, we have to count it and
1890 * check for pending connections on this server.
1891 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001892 if (unlikely(si_b->state == SI_ST_DIS)) {
1893 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001894 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001895 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001896 if (s->flags & SF_CURR_SESS) {
1897 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +02001898 HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001899 }
1900 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001901 if (may_dequeue_tasks(srv, s->be))
1902 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001903 }
1904 }
1905
1906 /*
1907 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1908 * at this point.
1909 */
1910
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001911 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001912 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001913 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1914 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001915 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001916 si_f->state != rq_prod_last ||
1917 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001918 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001919 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001920
Willy Tarreau8f128b42014-11-28 15:07:47 +01001921 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001922 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001923 unsigned int ana_list;
1924 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001925
Willy Tarreau90deb182010-01-07 00:20:41 +01001926 /* it's up to the analysers to stop new connections,
1927 * disable reading or closing. Note: if an analyser
1928 * disables any of these bits, it is responsible for
1929 * enabling them again when it disables itself, so
1930 * that other analysers are called in similar conditions.
1931 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001932 channel_auto_read(req);
1933 channel_auto_connect(req);
1934 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001935
1936 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001937 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001938 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001939 * the list when not needed. Any analyser may return 0
1940 * to break out of the loop, either because of missing
1941 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001942 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001943 * analyser, and we may loop again if other analysers
1944 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001945 *
1946 * We build a list of analysers to run. We evaluate all
1947 * of these analysers in the order of the lower bit to
1948 * the higher bit. This ordering is very important.
1949 * An analyser will often add/remove other analysers,
1950 * including itself. Any changes to itself have no effect
1951 * on the loop. If it removes any other analysers, we
1952 * want those analysers not to be called anymore during
1953 * this loop. If it adds an analyser that is located
1954 * after itself, we want it to be scheduled for being
1955 * processed during the loop. If it adds an analyser
1956 * which is located before it, we want it to switch to
1957 * it immediately, even if it has already been called
1958 * once but removed since.
1959 *
1960 * In order to achieve this, we compare the analyser
1961 * list after the call with a copy of it before the
1962 * call. The work list is fed with analyser bits that
1963 * appeared during the call. Then we compare previous
1964 * work list with the new one, and check the bits that
1965 * appeared. If the lowest of these bits is lower than
1966 * the current bit, it means we have enabled a previous
1967 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001968 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001969
Willy Tarreau8f128b42014-11-28 15:07:47 +01001970 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001971 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001972 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001973 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001974 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1975 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1976 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1977 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1978 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001979 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001980 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1981 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1982 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1983 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1984 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1985 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1986 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001987 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001988 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02001989 ANALYZE (s, req, pcli_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001990 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1991 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001992 break;
1993 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001994 }
Willy Tarreau84455332009-03-15 22:34:05 +01001995
Willy Tarreau8f128b42014-11-28 15:07:47 +01001996 rq_prod_last = si_f->state;
1997 rq_cons_last = si_b->state;
1998 req->flags &= ~CF_WAKE_ONCE;
1999 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002000
Willy Tarreau8f128b42014-11-28 15:07:47 +01002001 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002002 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002003 }
2004
Willy Tarreau576507f2010-01-07 00:09:04 +01002005 /* we'll monitor the request analysers while parsing the response,
2006 * because some response analysers may indirectly enable new request
2007 * analysers (eg: HTTP keep-alive).
2008 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002009 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01002010
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002011 resync_response:
2012 /* Analyse response */
2013
Willy Tarreau8f128b42014-11-28 15:07:47 +01002014 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
2015 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002016 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002017 si_f->state != rp_cons_last ||
2018 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002019 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002020 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002021
Willy Tarreau8f128b42014-11-28 15:07:47 +01002022 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002023 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002024 unsigned int ana_list;
2025 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002026
Willy Tarreau90deb182010-01-07 00:20:41 +01002027 /* it's up to the analysers to stop disable reading or
2028 * closing. Note: if an analyser disables any of these
2029 * bits, it is responsible for enabling them again when
2030 * it disables itself, so that other analysers are called
2031 * in similar conditions.
2032 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002033 channel_auto_read(res);
2034 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002035
2036 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002037 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002038 * to MSB. The analysers must remove themselves from
2039 * the list when not needed. Any analyser may return 0
2040 * to break out of the loop, either because of missing
2041 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002042 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002043 * analyser, and we may loop again if other analysers
2044 * are added in the middle.
2045 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002046
Willy Tarreau8f128b42014-11-28 15:07:47 +01002047 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002048 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002049 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002050 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
2051 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002052 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
2053 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
2054 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
2055 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 +01002056 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002057 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002058 ANALYZE (s, res, pcli_wait_for_response, ana_list, ana_back, AN_RES_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002059 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
2060 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002061 break;
2062 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002063 }
2064
Willy Tarreau8f128b42014-11-28 15:07:47 +01002065 rp_cons_last = si_f->state;
2066 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02002067 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002068 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002069
Willy Tarreau8f128b42014-11-28 15:07:47 +01002070 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002071 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002072 }
2073
Willy Tarreau576507f2010-01-07 00:09:04 +01002074 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002075 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002076 goto resync_request;
2077
Willy Tarreau8f128b42014-11-28 15:07:47 +01002078 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002079 goto resync_request;
2080
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002081 /* FIXME: here we should call protocol handlers which rely on
2082 * both buffers.
2083 */
2084
2085
2086 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002087 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002088 * we're just in a data phase here since it means we have not
2089 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002090 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002091 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002092 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002093 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002094 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002095 req->analysers = 0;
2096 if (req->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002097 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2098 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002099 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002100 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002101 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002102 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002103 else if (req->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002104 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2105 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002106 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002107 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002108 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002109 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002110 else if (req->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002111 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2112 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002113 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002114 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002115 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002116 }
2117 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002118 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2119 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002120 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002121 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002122 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002123 }
Willy Tarreau84455332009-03-15 22:34:05 +01002124 sess_set_term_flags(s);
2125 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002126 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002127 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002128 res->analysers = 0;
2129 if (res->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002130 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2131 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002132 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002133 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002134 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002135 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002136 else if (res->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002137 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2138 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002139 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002140 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002141 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002142 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002143 else if (res->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002144 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2145 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002146 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002147 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002148 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002149 }
2150 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002151 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2152 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002153 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002154 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002155 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002156 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002157 sess_set_term_flags(s);
2158 }
Willy Tarreau84455332009-03-15 22:34:05 +01002159 }
2160
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002161 /*
2162 * Here we take care of forwarding unhandled data. This also includes
2163 * connection establishments and shutdown requests.
2164 */
2165
2166
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002167 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002168 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002169 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002170 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002171 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002172 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002173 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2174 (si_f->state >= SI_ST_EST) &&
2175 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002176 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002177 * attached to it. If any data are left in, we'll permit them to
2178 * move.
2179 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002180 channel_auto_read(req);
2181 channel_auto_connect(req);
2182 channel_auto_close(req);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002183 c_adv(req, ci_data(req));
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002184
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002185 /* We'll let data flow between the producer (if still connected)
2186 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002187 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002188 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002189 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002190
2191 /* Just in order to support fetching HTTP contents after start
2192 * of forwarding when the HTTP forwarding analyser is not used,
2193 * we simply reset msg->sov so that HTTP rewinding points to the
2194 * headers.
2195 */
2196 if (s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002197 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - co_data(req);
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002198 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002199
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002200 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002201 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2202 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002203 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002204 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2205 (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 +01002206 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002207 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2208 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002209 (req->flags & CF_STREAMER_FAST)))) {
2210 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002211 }
2212
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002213 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002214 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002215
2216 /*
2217 * Now forward all shutdown requests between both sides of the buffer
2218 */
2219
Willy Tarreau520d95e2009-09-19 21:04:57 +02002220 /* first, let's check if the request buffer needs to shutdown(write), which may
2221 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002222 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2223 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002224 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002225 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002226 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002227 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002228 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002229
2230 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002231 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2232 channel_is_empty(req))) {
2233 if (req->flags & CF_READ_ERROR)
2234 si_b->flags |= SI_FL_NOLINGER;
2235 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002236 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002237
2238 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002239 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2240 !req->analysers))
2241 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002242
2243 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002244 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2245 if (si_f->flags & SI_FL_NOHALF)
2246 si_f->flags |= SI_FL_NOLINGER;
2247 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002248 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002249
Willy Tarreau520d95e2009-09-19 21:04:57 +02002250 /* it's possible that an upper layer has requested a connection setup or abort.
2251 * There are 2 situations where we decide to establish a new connection :
2252 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002253 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002254 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002255 if (si_b->state == SI_ST_INI) {
2256 if (!(req->flags & CF_SHUTW)) {
2257 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002258 /* If we have an appctx, there is no connect method, so we
2259 * immediately switch to the connected state, otherwise we
2260 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002261 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002262 si_b->state = SI_ST_REQ; /* new connection requested */
2263 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002264 }
Willy Tarreau73201222009-08-16 18:27:24 +02002265 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002266 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002267 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002268 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2269 channel_shutw_now(req); /* fix buffer flags upon abort */
2270 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002271 }
Willy Tarreau92795622009-03-06 12:51:23 +01002272 }
2273
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002274
2275 /* we may have a pending connection request, or a connection waiting
2276 * for completion.
2277 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002278 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002279
2280 /* prune the request variables and swap to the response variables. */
2281 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreaucda7f3f2018-10-28 13:44:36 +01002282 if (!LIST_ISEMPTY(&s->vars_reqres.head)) {
2283 vars_prune(&s->vars_reqres, s->sess, s);
2284 vars_init(&s->vars_reqres, SCOPE_RES);
2285 }
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002286 }
2287
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002288 do {
2289 /* nb: step 1 might switch from QUE to ASS, but we first want
2290 * to give a chance to step 2 to perform a redirect if needed.
2291 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002292 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002293 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002294 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002295 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002296
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002297 /* applets directly go to the ESTABLISHED state. Similarly,
2298 * servers experience the same fate when their connection
2299 * is reused.
2300 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002301 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002302 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002303
Willy Tarreaub44c8732013-12-31 23:16:50 +01002304 /* Now we can add the server name to a header (if requested) */
2305 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002306 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002307 (s->be->server_id_hdr_name != NULL) &&
2308 (s->be->mode == PR_MODE_HTTP) &&
2309 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002310 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002311 }
2312
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002313 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002314 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002315 http_perform_server_redirect(s, si_b);
2316 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002317 }
2318
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002319 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002320 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002321 goto resync_stream_interface;
2322
Willy Tarreau815a9b22010-07-27 17:15:12 +02002323 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002324 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002325 goto resync_request;
2326
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002327 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002328
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002329 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002330 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002331 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002332 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002333 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002334 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002335 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2336 (si_b->state >= SI_ST_EST) &&
2337 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002338 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002339 * attached to it. If any data are left in, we'll permit them to
2340 * move.
2341 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002342 channel_auto_read(res);
2343 channel_auto_close(res);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002344 c_adv(res, ci_data(res));
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002345
2346 /* We'll let data flow between the producer (if still connected)
2347 * to the consumer.
2348 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002349 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002350 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002351
Willy Tarreau42529c32015-07-09 18:38:57 +02002352 /* Just in order to support fetching HTTP contents after start
2353 * of forwarding when the HTTP forwarding analyser is not used,
2354 * we simply reset msg->sov so that HTTP rewinding points to the
2355 * headers.
2356 */
2357 if (s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002358 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - co_data(res);
Willy Tarreau42529c32015-07-09 18:38:57 +02002359
Willy Tarreauce887fd2012-05-12 12:50:00 +02002360 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002361 * tunnel timeout set, use it now. Note that we must respect
2362 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002363 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002364 if (!req->analysers && s->be->timeout.tunnel) {
2365 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002366 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002367
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002368 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2369 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002370 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2371 res->rto = s->be->timeout.serverfin;
2372 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2373 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002374 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2375 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002376
Willy Tarreau8f128b42014-11-28 15:07:47 +01002377 req->rex = tick_add(now_ms, req->rto);
2378 req->wex = tick_add(now_ms, req->wto);
2379 res->rex = tick_add(now_ms, res->rto);
2380 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002381 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002382 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002383
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002384 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002385 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2386 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002387 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002388 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2389 (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 +01002390 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002391 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2392 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002393 (res->flags & CF_STREAMER_FAST)))) {
2394 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002395 }
2396
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002397 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002398 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002399
2400 /*
2401 * Now forward all shutdown requests between both sides of the buffer
2402 */
2403
2404 /*
2405 * FIXME: this is probably where we should produce error responses.
2406 */
2407
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002408 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002409 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002410 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002411 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002412 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002413
2414 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002415 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2416 channel_is_empty(res))) {
2417 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002418 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002419
2420 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002421 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2422 !res->analysers)
2423 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002424
2425 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002426 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2427 if (si_b->flags & SI_FL_NOHALF)
2428 si_b->flags |= SI_FL_NOLINGER;
2429 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002430 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002431
Willy Tarreau8f128b42014-11-28 15:07:47 +01002432 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002433 goto resync_stream_interface;
2434
Willy Tarreau8f128b42014-11-28 15:07:47 +01002435 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002436 goto resync_request;
2437
Willy Tarreau8f128b42014-11-28 15:07:47 +01002438 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002439 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002440
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002441 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002442 si_f->flags &= ~SI_FL_DONT_WAKE;
2443 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002444
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002445 /* This is needed only when debugging is enabled, to indicate
2446 * client-side or server-side close. Please note that in the unlikely
2447 * event where both sides would close at once, the sequence is reported
2448 * on the server side first.
2449 */
2450 if (unlikely((global.mode & MODE_DEBUG) &&
2451 (!(global.mode & MODE_QUIET) ||
2452 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002453 if (si_b->state == SI_ST_CLO &&
2454 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002455 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002456 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002457 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2458 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002459 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002460 }
2461
Willy Tarreau8f128b42014-11-28 15:07:47 +01002462 if (si_f->state == SI_ST_CLO &&
2463 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002464 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002465 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002466 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2467 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002468 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002469 }
2470 }
2471
Willy Tarreau8f128b42014-11-28 15:07:47 +01002472 if (likely((si_f->state != SI_ST_CLO) ||
2473 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002474
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002475 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002476 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002477
Willy Tarreaud14844a2018-11-08 18:15:29 +01002478 si_update_both(si_f, si_b);
Olivier Houchard53216e72018-10-10 15:46:36 +02002479
Willy Tarreaubf89ff32018-11-09 14:59:25 +01002480 if (si_f->state == SI_ST_DIS || si_f->state != si_f->prev_state ||
2481 si_b->state == SI_ST_DIS || si_b->state != si_b->prev_state ||
Willy Tarreau85f89012018-10-25 11:06:57 +02002482 (((req->flags ^ rqf_last) | (res->flags ^ rpf_last)) & CF_MASK_ANALYSER))
Olivier Houchard53216e72018-10-10 15:46:36 +02002483 goto redo;
2484
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002485 /* Trick: if a request is being waiting for the server to respond,
2486 * and if we know the server can timeout, we don't want the timeout
2487 * to expire on the client side first, but we're still interested
2488 * in passing data from the client to the server (eg: POST). Thus,
2489 * we can cancel the client's request timeout if the server's
2490 * request timeout is set and the server has not yet sent a response.
2491 */
2492
Willy Tarreau8f128b42014-11-28 15:07:47 +01002493 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2494 (tick_isset(req->wex) || tick_isset(res->rex))) {
2495 req->flags |= CF_READ_NOEXP;
2496 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002497 }
2498
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002499 /* Reset pending events now */
2500 s->pending_events = 0;
2501
Willy Tarreau798f4322012-11-08 14:49:17 +01002502 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002503 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002504 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2505 tick_first(tick_first(req->rex, req->wex),
2506 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002507 if (!req->analysers)
2508 req->analyse_exp = TICK_ETERNITY;
2509
2510 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2511 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2512 req->analyse_exp = tick_add(now_ms, 5000);
2513
2514 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002515
Willy Tarreau9a398be2017-11-10 17:14:23 +01002516 t->expire = tick_first(t->expire, res->analyse_exp);
2517
Willy Tarreau8f128b42014-11-28 15:07:47 +01002518 if (si_f->exp)
2519 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002520
Willy Tarreau8f128b42014-11-28 15:07:47 +01002521 if (si_b->exp)
2522 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002523
Christopher Faulet56803b12017-11-24 16:06:18 +01002524 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002525 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2526 " 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 +01002527 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2528 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002529
2530#ifdef DEBUG_DEV
2531 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002532 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002533 ABORT_NOW();
2534#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002535 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002536 stream_release_buffers(s);
Olivier Houchardc2aa7112018-09-11 18:27:21 +02002537 /* We may have free'd some space in buffers, or have more to send/recv, try again */
Willy Tarreau26c25062009-03-08 09:38:41 +01002538 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002539 }
2540
Willy Tarreaue7dff022015-04-03 01:14:29 +02002541 if (s->flags & SF_BE_ASSIGNED)
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002542 HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002543
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002544 if (unlikely((global.mode & MODE_DEBUG) &&
2545 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002546 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002547 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002548 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2549 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002550 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002551 }
2552
2553 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002554 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002555
Willy Tarreaueee5b512015-04-03 23:46:31 +02002556 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002557 int n;
2558
Willy Tarreaueee5b512015-04-03 23:46:31 +02002559 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002560 if (n < 1 || n > 5)
2561 n = 0;
2562
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002563 if (sess->fe->mode == PR_MODE_HTTP) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002564 HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002565 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002566 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002567 (s->be->mode == PR_MODE_HTTP)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002568 HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2569 HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002570 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002571 }
2572
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002573 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002574 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002575 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002576 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreau66425e32018-07-25 06:55:12 +02002577 /* we may need to know the position in the queue */
2578 pendconn_free(s);
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002579 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002580 }
2581
Willy Tarreau87b09662015-04-03 00:22:06 +02002582 /* update time stats for this stream */
2583 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002584
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002585 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002586 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002587 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002588 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002589 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002590}
2591
Willy Tarreau87b09662015-04-03 00:22:06 +02002592/* Update the stream's backend and server time stats */
2593void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002594{
2595 int t_request;
2596 int t_queue;
2597 int t_connect;
2598 int t_data;
2599 int t_close;
2600 struct server *srv;
2601
2602 t_request = 0;
2603 t_queue = s->logs.t_queue;
2604 t_connect = s->logs.t_connect;
2605 t_close = s->logs.t_close;
2606 t_data = s->logs.t_data;
2607
2608 if (s->be->mode != PR_MODE_HTTP)
2609 t_data = t_connect;
2610
2611 if (t_connect < 0 || t_data < 0)
2612 return;
2613
2614 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2615 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2616
2617 t_data -= t_connect;
2618 t_connect -= t_queue;
2619 t_queue -= t_request;
2620
2621 srv = objt_server(s->target);
2622 if (srv) {
2623 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2624 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2625 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2626 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2627 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002628 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002629 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2630 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2631 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2632 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002633 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002634}
2635
Willy Tarreau7c669d72008-06-20 15:04:11 +02002636/*
2637 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002638 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002639 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002640 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002641 * server.
2642 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002643void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002644{
2645 if (sess->srv_conn == newsrv)
2646 return;
2647
2648 if (sess->srv_conn) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002649 HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002650 HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002651 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2652 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002653 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002654 }
2655
2656 if (newsrv) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002657 HA_ATOMIC_ADD(&newsrv->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002658 HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002659 if (newsrv->proxy->lbprm.server_take_conn)
2660 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002661 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002662 }
2663}
2664
Willy Tarreau84455332009-03-15 22:34:05 +01002665/* Handle server-side errors for default protocols. It is called whenever a a
2666 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002667 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002668 * them. It's installed as ->srv_error for the server-side stream_interface.
2669 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002670void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002671{
2672 int err_type = si->err_type;
2673 int err = 0, fin = 0;
2674
2675 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002676 err = SF_ERR_CLICL;
2677 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002678 }
2679 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002680 err = SF_ERR_CLICL;
2681 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002682 }
2683 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002684 err = SF_ERR_SRVTO;
2685 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002686 }
2687 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002688 err = SF_ERR_SRVCL;
2689 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002690 }
2691 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002692 err = SF_ERR_SRVTO;
2693 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002694 }
2695 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002696 err = SF_ERR_SRVCL;
2697 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002698 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002699 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002700 err = SF_ERR_RESOURCE;
2701 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002702 }
Willy Tarreau84455332009-03-15 22:34:05 +01002703 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002704 err = SF_ERR_INTERNAL;
2705 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002706 }
2707
Willy Tarreaue7dff022015-04-03 01:14:29 +02002708 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002709 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002710 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002711 s->flags |= fin;
2712}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002713
Willy Tarreaue7dff022015-04-03 01:14:29 +02002714/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002715void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002716{
Willy Tarreau87b09662015-04-03 00:22:06 +02002717 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002718 return;
2719
Willy Tarreau87b09662015-04-03 00:22:06 +02002720 channel_shutw_now(&stream->req);
2721 channel_shutr_now(&stream->res);
2722 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002723 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002724 stream->flags |= why;
2725 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002726}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002727
Willy Tarreau8b22a712010-06-18 17:46:06 +02002728/************************************************************************/
2729/* All supported ACL keywords must be declared here. */
2730/************************************************************************/
2731
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002732/* 0=OK, <0=Alert, >0=Warning */
2733static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2734 struct proxy *px, struct act_rule *rule,
2735 char **err)
2736{
2737 struct action_kw *kw;
2738
2739 /* Check if the service name exists. */
2740 if (*(args[*cur_arg]) == 0) {
2741 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002742 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002743 }
2744
2745 /* lookup for keyword corresponding to a service. */
2746 kw = action_lookup(&service_keywords, args[*cur_arg]);
2747 if (!kw) {
2748 memprintf(err, "'%s' unknown service name.", args[1]);
2749 return ACT_RET_PRS_ERR;
2750 }
2751 (*cur_arg)++;
2752
2753 /* executes specific rule parser. */
2754 rule->kw = kw;
2755 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2756 return ACT_RET_PRS_ERR;
2757
2758 /* Register processing function. */
2759 rule->action_ptr = process_use_service;
2760 rule->action = ACT_CUSTOM;
2761
2762 return ACT_RET_PRS_OK;
2763}
2764
2765void service_keywords_register(struct action_kw_list *kw_list)
2766{
2767 LIST_ADDQ(&service_keywords, &kw_list->list);
2768}
2769
William Lallemand4c5b4d52016-11-21 08:51:11 +01002770
2771/* This function dumps a complete stream state onto the stream interface's
2772 * read buffer. The stream has to be set in strm. It returns 0 if the output
2773 * buffer is full and it needs to be called again, otherwise non-zero. It is
2774 * designed to be called from stats_dump_strm_to_buffer() below.
2775 */
2776static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2777{
2778 struct appctx *appctx = __objt_appctx(si->end);
2779 struct tm tm;
2780 extern const char *monthname[12];
2781 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002782 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01002783 struct connection *conn;
2784 struct appctx *tmpctx;
2785
2786 chunk_reset(&trash);
2787
2788 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2789 /* stream changed, no need to go any further */
2790 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002791 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01002792 si_cant_put(si);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002793 return 0;
2794 }
2795 appctx->ctx.sess.uid = 0;
2796 appctx->ctx.sess.section = 0;
2797 return 1;
2798 }
2799
2800 switch (appctx->ctx.sess.section) {
2801 case 0: /* main status of the stream */
2802 appctx->ctx.sess.uid = strm->uniq_id;
2803 appctx->ctx.sess.section = 1;
2804 /* fall through */
2805
2806 case 1:
2807 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2808 chunk_appendf(&trash,
2809 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2810 strm,
2811 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2812 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2813 strm->uniq_id,
2814 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2815
2816 conn = objt_conn(strm_orig(strm));
2817 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2818 case AF_INET:
2819 case AF_INET6:
2820 chunk_appendf(&trash, " source=%s:%d\n",
2821 pn, get_host_port(&conn->addr.from));
2822 break;
2823 case AF_UNIX:
2824 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2825 break;
2826 default:
2827 /* no more information to print right now */
2828 chunk_appendf(&trash, "\n");
2829 break;
2830 }
2831
2832 chunk_appendf(&trash,
2833 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2834 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2835
2836 chunk_appendf(&trash,
2837 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2838 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2839 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2840 strm_li(strm) ? strm_li(strm)->luid : 0);
2841
2842 if (conn)
2843 conn_get_to_addr(conn);
2844
2845 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2846 case AF_INET:
2847 case AF_INET6:
2848 chunk_appendf(&trash, " addr=%s:%d\n",
2849 pn, get_host_port(&conn->addr.to));
2850 break;
2851 case AF_UNIX:
2852 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2853 break;
2854 default:
2855 /* no more information to print right now */
2856 chunk_appendf(&trash, "\n");
2857 break;
2858 }
2859
2860 if (strm->be->cap & PR_CAP_BE)
2861 chunk_appendf(&trash,
2862 " backend=%s (id=%u mode=%s)",
2863 strm->be->id,
2864 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2865 else
2866 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2867
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002868 cs = objt_cs(strm->si[1].end);
2869 conn = cs_conn(cs);
2870
William Lallemand4c5b4d52016-11-21 08:51:11 +01002871 if (conn)
2872 conn_get_from_addr(conn);
2873
2874 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2875 case AF_INET:
2876 case AF_INET6:
2877 chunk_appendf(&trash, " addr=%s:%d\n",
2878 pn, get_host_port(&conn->addr.from));
2879 break;
2880 case AF_UNIX:
2881 chunk_appendf(&trash, " addr=unix\n");
2882 break;
2883 default:
2884 /* no more information to print right now */
2885 chunk_appendf(&trash, "\n");
2886 break;
2887 }
2888
2889 if (strm->be->cap & PR_CAP_BE)
2890 chunk_appendf(&trash,
2891 " server=%s (id=%u)",
2892 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2893 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2894 else
2895 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2896
2897 if (conn)
2898 conn_get_to_addr(conn);
2899
2900 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2901 case AF_INET:
2902 case AF_INET6:
2903 chunk_appendf(&trash, " addr=%s:%d\n",
2904 pn, get_host_port(&conn->addr.to));
2905 break;
2906 case AF_UNIX:
2907 chunk_appendf(&trash, " addr=unix\n");
2908 break;
2909 default:
2910 /* no more information to print right now */
2911 chunk_appendf(&trash, "\n");
2912 break;
2913 }
2914
2915 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002916 " task=%p (state=0x%02x nice=%d calls=%d exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002917 strm->task,
2918 strm->task->state,
2919 strm->task->nice, strm->task->calls,
2920 strm->task->expire ?
2921 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2922 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2923 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01002924 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01002925 task_in_rq(strm->task) ? ", running" : "");
2926
2927 chunk_appendf(&trash,
2928 " age=%s)\n",
2929 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2930
2931 if (strm->txn)
2932 chunk_appendf(&trash,
2933 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2934 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02002935 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 +01002936
2937 chunk_appendf(&trash,
2938 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2939 &strm->si[0],
2940 si_state_str(strm->si[0].state),
2941 strm->si[0].flags,
2942 obj_type_name(strm->si[0].end),
2943 obj_base_ptr(strm->si[0].end),
2944 strm->si[0].exp ?
2945 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2946 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2947 TICKS_TO_MS(1000)) : "<NEVER>",
2948 strm->si[0].err_type);
2949
2950 chunk_appendf(&trash,
2951 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2952 &strm->si[1],
2953 si_state_str(strm->si[1].state),
2954 strm->si[1].flags,
2955 obj_type_name(strm->si[1].end),
2956 obj_base_ptr(strm->si[1].end),
2957 strm->si[1].exp ?
2958 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2959 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2960 TICKS_TO_MS(1000)) : "<NEVER>",
2961 strm->si[1].err_type);
2962
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002963 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
2964 conn = cs->conn;
2965
William Lallemand4c5b4d52016-11-21 08:51:11 +01002966 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002967 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002968 conn,
2969 conn_get_ctrl_name(conn),
2970 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002971 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002972 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002973 obj_type_name(conn->target),
2974 obj_base_ptr(conn->target));
2975
2976 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002977 " 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 +01002978 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002979 conn->handle.fd,
2980 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002981 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002982 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002983 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002984 }
2985 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2986 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002987 " 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 +01002988 tmpctx,
2989 tmpctx->st0,
2990 tmpctx->st1,
2991 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002992 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002993 tmpctx->thread_mask,
2994 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002995 }
2996
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002997 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
2998 conn = cs->conn;
2999
William Lallemand4c5b4d52016-11-21 08:51:11 +01003000 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003001 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003002 conn,
3003 conn_get_ctrl_name(conn),
3004 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003005 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003006 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003007 obj_type_name(conn->target),
3008 obj_base_ptr(conn->target));
3009
3010 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01003011 " 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 +01003012 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003013 conn->handle.fd,
3014 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01003015 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003016 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003017 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003018 }
3019 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
3020 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003021 " 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 +01003022 tmpctx,
3023 tmpctx->st0,
3024 tmpctx->st1,
3025 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003026 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003027 tmpctx->thread_mask,
3028 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003029 }
3030
3031 chunk_appendf(&trash,
3032 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3033 " an_exp=%s",
3034 &strm->req,
3035 strm->req.flags, strm->req.analysers,
3036 strm->req.pipe ? strm->req.pipe->data : 0,
3037 strm->req.to_forward, strm->req.total,
3038 strm->req.analyse_exp ?
3039 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
3040 TICKS_TO_MS(1000)) : "<NEVER>");
3041
3042 chunk_appendf(&trash,
3043 " rex=%s",
3044 strm->req.rex ?
3045 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
3046 TICKS_TO_MS(1000)) : "<NEVER>");
3047
3048 chunk_appendf(&trash,
3049 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003050 " buf=%p data=%p o=%u p=%u req.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003051 strm->req.wex ?
3052 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
3053 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003054 &strm->req.buf,
3055 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003056 (unsigned int)ci_head_ofs(&strm->req),
Willy Tarreau591d4452018-06-15 17:21:00 +02003057 strm->txn ? strm->txn->req.next : 0, (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003058 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003059
3060 chunk_appendf(&trash,
3061 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3062 " an_exp=%s",
3063 &strm->res,
3064 strm->res.flags, strm->res.analysers,
3065 strm->res.pipe ? strm->res.pipe->data : 0,
3066 strm->res.to_forward, strm->res.total,
3067 strm->res.analyse_exp ?
3068 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
3069 TICKS_TO_MS(1000)) : "<NEVER>");
3070
3071 chunk_appendf(&trash,
3072 " rex=%s",
3073 strm->res.rex ?
3074 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3075 TICKS_TO_MS(1000)) : "<NEVER>");
3076
3077 chunk_appendf(&trash,
3078 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003079 " buf=%p data=%p o=%u p=%u rsp.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003080 strm->res.wex ?
3081 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3082 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003083 &strm->res.buf,
3084 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003085 (unsigned int)ci_head_ofs(&strm->res),
Willy Tarreau591d4452018-06-15 17:21:00 +02003086 strm->txn ? strm->txn->rsp.next : 0, (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003087 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003088
Willy Tarreau06d80a92017-10-19 14:32:15 +02003089 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003090 si_cant_put(si);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003091 return 0;
3092 }
3093
3094 /* use other states to dump the contents */
3095 }
3096 /* end of dump */
3097 appctx->ctx.sess.uid = 0;
3098 appctx->ctx.sess.section = 0;
3099 return 1;
3100}
3101
3102
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003103static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003104{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003105 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3106 return 1;
3107
3108 if (*args[2] && strcmp(args[2], "all") == 0)
3109 appctx->ctx.sess.target = (void *)-1;
3110 else if (*args[2])
3111 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3112 else
3113 appctx->ctx.sess.target = NULL;
3114 appctx->ctx.sess.section = 0; /* start with stream status */
3115 appctx->ctx.sess.pos = 0;
3116
3117 return 0;
3118}
3119
3120/* This function dumps all streams' states onto the stream interface's
3121 * read buffer. It returns 0 if the output buffer is full and it needs
3122 * to be called again, otherwise non-zero. It is designed to be called
3123 * from stats_dump_sess_to_buffer() below.
3124 */
3125static int cli_io_handler_dump_sess(struct appctx *appctx)
3126{
3127 struct stream_interface *si = appctx->owner;
3128 struct connection *conn;
3129
3130 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3131 /* If we're forced to shut down, we might have to remove our
3132 * reference to the last stream being dumped.
3133 */
3134 if (appctx->st2 == STAT_ST_LIST) {
3135 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3136 LIST_DEL(&appctx->ctx.sess.bref.users);
3137 LIST_INIT(&appctx->ctx.sess.bref.users);
3138 }
3139 }
3140 return 1;
3141 }
3142
3143 chunk_reset(&trash);
3144
3145 switch (appctx->st2) {
3146 case STAT_ST_INIT:
3147 /* the function had not been called yet, let's prepare the
3148 * buffer for a response. We initialize the current stream
3149 * pointer to the first in the global list. When a target
3150 * stream is being destroyed, it is responsible for updating
3151 * this pointer. We know we have reached the end when this
3152 * pointer points back to the head of the streams list.
3153 */
3154 LIST_INIT(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003155 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003156 appctx->ctx.sess.bref.ref = streams.n;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003157 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003158 appctx->st2 = STAT_ST_LIST;
3159 /* fall through */
3160
3161 case STAT_ST_LIST:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003162 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003163 /* first, let's detach the back-ref from a possible previous stream */
3164 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3165 LIST_DEL(&appctx->ctx.sess.bref.users);
3166 LIST_INIT(&appctx->ctx.sess.bref.users);
3167 }
3168
3169 /* and start from where we stopped */
3170 while (appctx->ctx.sess.bref.ref != &streams) {
3171 char pn[INET6_ADDRSTRLEN];
3172 struct stream *curr_strm;
3173
3174 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3175
3176 if (appctx->ctx.sess.target) {
3177 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3178 goto next_sess;
3179
3180 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3181 /* call the proper dump() function and return if we're missing space */
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003182 if (!stats_dump_full_strm_to_buffer(si, curr_strm)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003183 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003184 return 0;
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003185 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003186
3187 /* stream dump complete */
3188 LIST_DEL(&appctx->ctx.sess.bref.users);
3189 LIST_INIT(&appctx->ctx.sess.bref.users);
3190 if (appctx->ctx.sess.target != (void *)-1) {
3191 appctx->ctx.sess.target = NULL;
3192 break;
3193 }
3194 else
3195 goto next_sess;
3196 }
3197
3198 chunk_appendf(&trash,
3199 "%p: proto=%s",
3200 curr_strm,
3201 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3202
3203 conn = objt_conn(strm_orig(curr_strm));
3204 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3205 case AF_INET:
3206 case AF_INET6:
3207 chunk_appendf(&trash,
3208 " src=%s:%d fe=%s be=%s srv=%s",
3209 pn,
3210 get_host_port(&conn->addr.from),
3211 strm_fe(curr_strm)->id,
3212 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3213 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3214 );
3215 break;
3216 case AF_UNIX:
3217 chunk_appendf(&trash,
3218 " src=unix:%d fe=%s be=%s srv=%s",
3219 strm_li(curr_strm)->luid,
3220 strm_fe(curr_strm)->id,
3221 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3222 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3223 );
3224 break;
3225 }
3226
3227 chunk_appendf(&trash,
3228 " ts=%02x age=%s calls=%d",
3229 curr_strm->task->state,
3230 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3231 curr_strm->task->calls);
3232
3233 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003234 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003235 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003236 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003237 curr_strm->req.analysers,
3238 curr_strm->req.rex ?
3239 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3240 TICKS_TO_MS(1000)) : "");
3241
3242 chunk_appendf(&trash,
3243 ",wx=%s",
3244 curr_strm->req.wex ?
3245 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3246 TICKS_TO_MS(1000)) : "");
3247
3248 chunk_appendf(&trash,
3249 ",ax=%s]",
3250 curr_strm->req.analyse_exp ?
3251 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3252 TICKS_TO_MS(1000)) : "");
3253
3254 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003255 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003256 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003257 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003258 curr_strm->res.analysers,
3259 curr_strm->res.rex ?
3260 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3261 TICKS_TO_MS(1000)) : "");
3262
3263 chunk_appendf(&trash,
3264 ",wx=%s",
3265 curr_strm->res.wex ?
3266 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3267 TICKS_TO_MS(1000)) : "");
3268
3269 chunk_appendf(&trash,
3270 ",ax=%s]",
3271 curr_strm->res.analyse_exp ?
3272 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3273 TICKS_TO_MS(1000)) : "");
3274
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003275 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003276 chunk_appendf(&trash,
3277 " s0=[%d,%1xh,fd=%d,ex=%s]",
3278 curr_strm->si[0].state,
3279 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003280 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003281 curr_strm->si[0].exp ?
3282 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3283 TICKS_TO_MS(1000)) : "");
3284
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003285 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003286 chunk_appendf(&trash,
3287 " s1=[%d,%1xh,fd=%d,ex=%s]",
3288 curr_strm->si[1].state,
3289 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003290 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003291 curr_strm->si[1].exp ?
3292 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3293 TICKS_TO_MS(1000)) : "");
3294
3295 chunk_appendf(&trash,
3296 " exp=%s",
3297 curr_strm->task->expire ?
3298 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3299 TICKS_TO_MS(1000)) : "");
3300 if (task_in_rq(curr_strm->task))
3301 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3302
3303 chunk_appendf(&trash, "\n");
3304
Willy Tarreau06d80a92017-10-19 14:32:15 +02003305 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003306 /* let's try again later from this stream. We add ourselves into
3307 * this stream's users so that it can remove us upon termination.
3308 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003309 si_cant_put(si);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003310 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003311 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003312 return 0;
3313 }
3314
3315 next_sess:
3316 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3317 }
3318
3319 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3320 /* specified stream not found */
3321 if (appctx->ctx.sess.section > 0)
3322 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3323 else
3324 chunk_appendf(&trash, "Session not found.\n");
3325
Willy Tarreau06d80a92017-10-19 14:32:15 +02003326 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01003327 si_cant_put(si);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003328 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003329 return 0;
3330 }
3331
3332 appctx->ctx.sess.target = NULL;
3333 appctx->ctx.sess.uid = 0;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003334 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003335 return 1;
3336 }
3337
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003338 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003339 /* fall through */
3340
3341 default:
3342 appctx->st2 = STAT_ST_FIN;
3343 return 1;
3344 }
3345}
3346
3347static void cli_release_show_sess(struct appctx *appctx)
3348{
3349 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003350 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003351 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3352 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003353 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003354 }
3355}
3356
Willy Tarreau61b65212016-11-24 11:09:25 +01003357/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003358static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003359{
3360 struct stream *strm, *ptr;
3361
3362 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3363 return 1;
3364
3365 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003366 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003367 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003368 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003369 return 1;
3370 }
3371
3372 ptr = (void *)strtoul(args[2], NULL, 0);
3373
3374 /* first, look for the requested stream in the stream table */
3375 list_for_each_entry(strm, &streams, list) {
3376 if (strm == ptr)
3377 break;
3378 }
3379
3380 /* do we have the stream ? */
3381 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003382 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003383 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003384 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003385 return 1;
3386 }
3387
3388 stream_shutdown(strm, SF_ERR_KILLED);
3389 return 1;
3390}
3391
Willy Tarreau4e46b622016-11-23 16:50:48 +01003392/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003393static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003394{
3395 struct server *sv;
3396 struct stream *strm, *strm_bck;
3397
3398 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3399 return 1;
3400
3401 sv = cli_find_server(appctx, args[3]);
3402 if (!sv)
3403 return 1;
3404
3405 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003406 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003407 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3408 if (strm->srv_conn == sv)
3409 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003410 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003411 return 1;
3412}
3413
William Lallemand4c5b4d52016-11-21 08:51:11 +01003414/* register cli keywords */
3415static struct cli_kw_list cli_kws = {{ },{
3416 { { "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 +01003417 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003418 { { "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 +01003419 {{},}
3420}};
3421
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003422/* main configuration keyword registration. */
3423static struct action_kw_list stream_tcp_keywords = { ILH, {
3424 { "use-service", stream_parse_use_service },
3425 { /* END */ }
3426}};
3427
3428static struct action_kw_list stream_http_keywords = { ILH, {
3429 { "use-service", stream_parse_use_service },
3430 { /* END */ }
3431}};
3432
Willy Tarreau8b22a712010-06-18 17:46:06 +02003433__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003434static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003435{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003436 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3437 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003438 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003439}
3440
Willy Tarreaubaaee002006-06-26 02:48:02 +02003441/*
3442 * Local variables:
3443 * c-indent-level: 8
3444 * c-basic-offset: 8
3445 * End:
3446 */