blob: ed913d119b23d4b7c3eb906de807c4d4413cf9a2 [file] [log] [blame]
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>
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +020021#include <common/hathreads.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010022#include <common/initcall.h>
23#include <common/memory.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020024
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020025#include <types/applet.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020026#include <types/capture.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010027#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020028#include <types/filters.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010029#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010030#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020031
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020032#include <proto/acl.h>
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020033#include <proto/action.h>
Willy Tarreau609aad92018-11-22 08:31:09 +010034#include <proto/activity.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020035#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010036#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020037#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010038#include <proto/checks.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010039#include <proto/cli.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020040#include <proto/connection.h>
William Lallemand9ed62032016-11-21 17:49:11 +010041#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020042#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020043#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020044#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020045#include <proto/frontend.h>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010046#include <proto/hdr_idx.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010047#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +020048#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020049#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020050#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020051#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020052#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020053#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010054#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010055#include <proto/proto_http.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020056#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020057#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010058#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020059#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010060#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010061#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010062#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010063#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020064#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020065
Willy Tarreau8ceae722018-11-26 11:58:30 +010066DECLARE_POOL(pool_head_stream, "stream", sizeof(struct stream));
67
Willy Tarreaub6b3df32018-11-26 16:31:20 +010068struct list streams = LIST_HEAD_INIT(streams);
Willy Tarreau86abe442018-11-25 20:12:18 +010069__decl_spinlock(streams_lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +020070
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020071/* List of all use-service keywords. */
72static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
73
Willy Tarreau5790eb02017-08-28 17:18:36 +020074
75/* Create a new stream for connection <conn>. Return < 0 on error. This is only
76 * valid right after the handshake, before the connection's data layer is
77 * initialized, because it relies on the session to be in conn->owner.
78 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +020079int stream_create_from_cs(struct conn_stream *cs)
Willy Tarreau5790eb02017-08-28 17:18:36 +020080{
81 struct stream *strm;
82
Olivier Houchard9aaf7782017-09-13 18:30:23 +020083 strm = stream_new(cs->conn->owner, &cs->obj_type);
Willy Tarreau5790eb02017-08-28 17:18:36 +020084 if (strm == NULL)
85 return -1;
86
87 task_wakeup(strm->task, TASK_WOKEN_INIT);
88 return 0;
89}
90
Willy Tarreaub882dd82018-11-06 15:50:21 +010091/* Callback used to wake up a stream when an input buffer is available. The
92 * stream <s>'s stream interfaces are checked for a failed buffer allocation
Willy Tarreaud0f5bbc2018-11-14 11:10:26 +010093 * as indicated by the presence of the SI_FL_RXBLK_ROOM flag and the lack of a
Willy Tarreaub882dd82018-11-06 15:50:21 +010094 * buffer, and and input buffer is assigned there (at most one). The function
95 * returns 1 and wakes the stream up if a buffer was taken, otherwise zero.
96 * It's designed to be called from __offer_buffer().
97 */
98int stream_buf_available(void *arg)
99{
100 struct stream *s = arg;
101
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100102 if (!s->req.buf.size && !s->req.pipe && (s->si[0].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100103 b_alloc_margin(&s->req.buf, global.tune.reserved_bufs))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100104 si_rx_buff_rdy(&s->si[0]);
105 else if (!s->res.buf.size && !s->res.pipe && (s->si[1].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100106 b_alloc_margin(&s->res.buf, 0))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100107 si_rx_buff_rdy(&s->si[1]);
Willy Tarreaub882dd82018-11-06 15:50:21 +0100108 else
109 return 0;
110
111 task_wakeup(s->task, TASK_WOKEN_RES);
112 return 1;
113
114}
115
Willy Tarreau9903f0e2015-04-04 18:50:31 +0200116/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200117 * handshake, in order to complete initialization of a valid stream. It must be
Joseph Herlant4cc8d0d2018-11-15 09:14:14 -0800118 * called with a completely initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200119 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +0200120 * end point is assigned to <origin>, which must be valid. The stream's task
121 * is configured with a nice value inherited from the listener's nice if any.
122 * The task's context is set to the new stream, and its function is set to
123 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +0200124 */
Willy Tarreau87787ac2017-08-28 16:22:54 +0200125struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +0200126{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200127 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200128 struct task *t;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200129 struct conn_stream *cs = objt_cs(origin);
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200130 struct appctx *appctx = objt_appctx(origin);
Christopher Fauletb3484d62018-11-29 15:19:05 +0100131 const struct cs_info *csinfo;
Willy Tarreau2542b532012-08-31 16:01:23 +0200132
Willy Tarreaubafbe012017-11-24 17:34:44 +0100133 if (unlikely((s = pool_alloc(pool_head_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200134 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200135
136 /* minimum stream initialization required for an embryonic stream is
137 * fairly low. We need very little to execute L4 ACLs, then we need a
138 * task to make the client-side connection live on its own.
139 * - flags
140 * - stick-entry tracking
141 */
142 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200143 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200144 s->logs.level = 0;
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
Christopher Fauletb3484d62018-11-29 15:19:05 +0100154 csinfo = si_get_cs_info(cs);
155 if (csinfo) {
156 s->logs.accept_date = csinfo->create_date;
157 s->logs.tv_accept = csinfo->tv_create;
158 s->logs.t_handshake = csinfo->t_handshake;
159 s->logs.t_idle = csinfo->t_idle;
160 }
161 else {
162 s->logs.accept_date = sess->accept_date;
163 s->logs.tv_accept = sess->tv_accept;
164 s->logs.t_handshake = sess->t_handshake;
165 s->logs.t_idle = -1;
166 }
167
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200168 /* default logging function */
169 s->do_log = strm_log;
170
171 /* default error reporting function, may be changed by analysers */
172 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200173
174 /* Initialise the current rule list pointer to NULL. We are sure that
175 * any rulelist match the NULL pointer.
176 */
177 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200178 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200179
Willy Tarreaua68f7622015-09-21 17:48:24 +0200180 /* Copy SC counters for the stream. We don't touch refcounts because
181 * any reference we have is inherited from the session. Since the stream
182 * doesn't exist without the session, the session's existence guarantees
183 * we don't lose the entry. During the store operation, the stream won't
184 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200185 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200186 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200187
188 s->sess = sess;
189 s->si[0].flags = SI_FL_NONE;
190 s->si[1].flags = SI_FL_ISBACK;
191
Willy Tarreau90a7c032018-09-05 16:21:29 +0200192 s->uniq_id = HA_ATOMIC_XADD(&global.req_count, 1);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200193
Willy Tarreau87b09662015-04-03 00:22:06 +0200194 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200195 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100196
197 LIST_INIT(&s->buffer_wait.list);
198 s->buffer_wait.target = s;
Willy Tarreaub882dd82018-11-06 15:50:21 +0100199 s->buffer_wait.wakeup_cb = stream_buf_available;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200200
Willy Tarreaue7dff022015-04-03 01:14:29 +0200201 s->flags |= SF_INITIALIZED;
William Lallemandcf62f7e2018-10-26 14:47:40 +0200202 s->pcli_next_pid = 0;
Willy Tarreau2542b532012-08-31 16:01:23 +0200203 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200204
Emeric Brunc60def82017-09-27 14:59:38 +0200205 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200206 goto out_fail_alloc;
207
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200208 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100209 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200210 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200211 t->context = s;
212 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200213 if (sess->listener)
214 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200215
Willy Tarreau87b09662015-04-03 00:22:06 +0200216 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200217 * This changes later when switching rules are executed or
218 * when the default backend is assigned.
219 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200220 s->be = sess->fe;
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200221 s->req.buf = BUF_NULL;
222 s->res.buf = BUF_NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200223 s->req_cap = NULL;
224 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200225
Willy Tarreauebcd4842015-06-19 11:59:02 +0200226 /* Initialise all the variables contexts even if not used.
227 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200228 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200229 vars_init(&s->vars_txn, SCOPE_TXN);
230 vars_init(&s->vars_reqres, SCOPE_REQ);
231
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200232 /* this part should be common with other protocols */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200233 if (si_reset(&s->si[0]) < 0)
234 goto out_fail_alloc;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200235 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100236 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200237
Willy Tarreau984fca92017-12-20 16:31:43 +0100238 if (cs && cs->conn->mux && cs->conn->mux->flags & MX_FL_CLEAN_ABRT)
239 s->si[0].flags |= SI_FL_CLEAN_ABRT;
240
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200241 /* attach the incoming connection to the stream interface now. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200242 if (cs)
243 si_attach_cs(&s->si[0], cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200244 else if (appctx)
245 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200246
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200247 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200248 s->si[0].flags |= SI_FL_INDEP_STR;
249
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200250 /* pre-initialize the other side's stream interface to an INIT state. The
251 * callbacks will be initialized before attempting to connect.
252 */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200253 if (si_reset(&s->si[1]) < 0)
254 goto out_fail_alloc_si1;
Hongbo Longe39683c2017-03-10 18:41:51 +0100255 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200256
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200257 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200258 s->si[1].flags |= SI_FL_INDEP_STR;
259
Willy Tarreau87b09662015-04-03 00:22:06 +0200260 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100261 s->target = sess->listener ? sess->listener->default_target : NULL;
262
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200263 s->pend_pos = NULL;
Patrick Hemmer268a7072018-05-11 12:52:31 -0400264 s->priority_class = 0;
265 s->priority_offset = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200266
267 /* init store persistence */
268 s->store_count = 0;
269
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100270 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100271 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100272 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaue223e3b2017-11-18 15:39:10 +0100273
274 if (!sess->fe->fe_req_ana) {
275 channel_auto_connect(&s->req); /* don't wait to establish connection */
276 channel_auto_close(&s->req); /* let the producer forward close requests */
277 }
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200278
279 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100280 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100281 s->req.rex = TICK_ETERNITY;
282 s->req.wex = TICK_ETERNITY;
283 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200284
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100285 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100286 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100287 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200288
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200289 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100290 s->req.flags |= CF_NEVER_WAIT;
291 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200292 }
293
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200294 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100295 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100296 s->res.rex = TICK_ETERNITY;
297 s->res.wex = TICK_ETERNITY;
298 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200299
Willy Tarreaueee5b512015-04-03 23:46:31 +0200300 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100301 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100302
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100303 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200304 LIST_ADDQ(&streams, &s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100305 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200306
Christopher Faulet92d36382015-11-05 13:35:03 +0100307 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200308 goto out_fail_accept;
309
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200310 /* finish initialization of the accepted file descriptor */
Olivier Houchard53216e72018-10-10 15:46:36 +0200311 if (appctx)
Willy Tarreau0cd3bd62018-11-06 18:46:37 +0100312 si_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200313
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200314 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200315 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200316
317 /* it is important not to call the wakeup function directly but to
318 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200319 * priorities to tasks. Using multi thread we must be sure that
320 * stream is fully initialized before calling task_wakeup. So
321 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200322 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200323 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200324
325 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200326 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100327 flt_stream_release(s, 0);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200328 task_free(t);
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200329 tasklet_free(s->si[1].wait_event.task);
Willy Tarreaue5f229e2018-10-15 11:08:55 +0200330 LIST_DEL(&s->list);
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200331out_fail_alloc_si1:
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200332 tasklet_free(s->si[0].wait_event.task);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200333 out_fail_alloc:
Willy Tarreaubafbe012017-11-24 17:34:44 +0100334 pool_free(pool_head_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200335 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200336}
337
Willy Tarreaubaaee002006-06-26 02:48:02 +0200338/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200339 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200340 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200341static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200342{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200343 struct session *sess = strm_sess(s);
344 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100345 struct bref *bref, *back;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200346 struct conn_stream *cli_cs = objt_cs(s->si[0].end);
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100347 int must_free_sess;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200348 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100349
Willy Tarreaud0ad4a82018-07-25 11:13:53 +0200350 pendconn_free(s);
Willy Tarreau922a8062008-12-04 09:33:58 +0100351
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100352 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200353 if (s->flags & SF_CURR_SESS) {
354 s->flags &= ~SF_CURR_SESS;
Willy Tarreaub54c40a2018-12-02 19:28:41 +0100355 HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1);
Willy Tarreau1e62de62008-11-11 20:20:02 +0100356 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100357 if (may_dequeue_tasks(objt_server(s->target), s->be))
358 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100359 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100360
Willy Tarreau7c669d72008-06-20 15:04:11 +0200361 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200362 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200363 * it should normally be only the same as the one above,
364 * so this should not happen in fact.
365 */
366 sess_change_server(s, NULL);
367 }
368
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100369 if (s->req.pipe)
370 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100371
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100372 if (s->res.pipe)
373 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100374
Willy Tarreaubf883e02014-11-25 21:10:35 +0100375 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100376 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100377 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100378 LIST_DEL(&s->buffer_wait.list);
379 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100380 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100381 }
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200382 if (s->req.buf.size || s->res.buf.size) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100383 b_drop(&s->req.buf);
384 b_drop(&s->res.buf);
Olivier Houchard673867c2018-05-25 16:58:52 +0200385 offer_buffers(NULL, tasks_run_queue);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100386 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200387
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100388 hlua_ctx_destroy(s->hlua);
389 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200390 if (s->txn)
391 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100392
Willy Tarreau1e954912012-10-12 17:50:05 +0200393 /* ensure the client-side transport layer is destroyed */
Willy Tarreau32560732017-10-08 11:33:44 +0200394 if (cli_cs)
395 cs_close(cli_cs);
Willy Tarreau1e954912012-10-12 17:50:05 +0200396
Willy Tarreaua4cda672010-06-06 18:28:49 +0200397 for (i = 0; i < s->store_count; i++) {
398 if (!s->store[i].ts)
399 continue;
400 stksess_free(s->store[i].table, s->store[i].ts);
401 s->store[i].ts = NULL;
402 }
403
Willy Tarreaueee5b512015-04-03 23:46:31 +0200404 if (s->txn) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100405 pool_free(pool_head_hdr_idx, s->txn->hdr_idx.v);
406 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200407 s->txn = NULL;
408 }
409
Christopher Fauletd7c91962015-04-30 11:48:27 +0200410 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100411 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200412
Willy Tarreau92fb9832007-10-16 17:34:28 +0200413 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100414 pool_free(fe->rsp_cap_pool, s->res_cap);
415 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200416 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100417
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200418 /* Cleanup all variable contexts. */
Willy Tarreaucda7f3f2018-10-28 13:44:36 +0100419 if (!LIST_ISEMPTY(&s->vars_txn.head))
420 vars_prune(&s->vars_txn, s->sess, s);
421 if (!LIST_ISEMPTY(&s->vars_reqres.head))
422 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200423
Willy Tarreau87b09662015-04-03 00:22:06 +0200424 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200425
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100426 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100427 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100428 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200429 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100430 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100431 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100432 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200433 if (s->list.n != &streams)
434 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100435 bref->ref = s->list.n;
436 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100437 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100438 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200439
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100440 /* applets do not release session yet */
441 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
442
Olivier Houchard4fdec7a2018-10-11 17:09:14 +0200443
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200444 si_release_endpoint(&s->si[1]);
445 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200446
Olivier Houchardd7bd3e32018-10-18 16:22:02 +0200447 tasklet_free(s->si[0].wait_event.task);
448 tasklet_free(s->si[1].wait_event.task);
449
Olivier Houchard25607af2018-11-23 14:50:47 +0100450 if (must_free_sess) {
451 sess->origin = NULL;
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100452 session_free(sess);
Olivier Houchard25607af2018-11-23 14:50:47 +0100453 }
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100454
Willy Tarreaubafbe012017-11-24 17:34:44 +0100455 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200456
457 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200458 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100459 pool_flush(pool_head_buffer);
460 pool_flush(pool_head_http_txn);
461 pool_flush(pool_head_hdr_idx);
462 pool_flush(pool_head_requri);
463 pool_flush(pool_head_capture);
464 pool_flush(pool_head_stream);
465 pool_flush(pool_head_session);
466 pool_flush(pool_head_connection);
467 pool_flush(pool_head_pendconn);
468 pool_flush(fe->req_cap_pool);
469 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200470 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200471}
472
Willy Tarreau656859d2014-11-25 19:46:36 +0100473
Willy Tarreau87b09662015-04-03 00:22:06 +0200474/* Allocates a work buffer for stream <s>. It is meant to be called inside
475 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200476 * to work fine, which is the response buffer so that an error message may be
477 * built and returned. Response buffers may be allocated from the reserve, this
478 * is critical to ensure that a response may always flow and will never block a
479 * server from releasing a connection. Returns 0 in case of failure, non-zero
480 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100481 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100482static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100483{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100484 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100485 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100486 LIST_DEL(&s->buffer_wait.list);
487 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100488 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100489 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100490
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200491 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100492 return 1;
493
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100494 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100495 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100496 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100497 return 0;
498}
499
500/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100501 * update() functions. It will try to wake up as many tasks/applets as the
502 * number of buffers that it releases. In practice, most often streams are
503 * blocked on a single buffer, so it makes sense to try to wake two up when two
504 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100505 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200506void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100507{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100508 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100509
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200510 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100511 offer = 1;
512 b_free(&s->req.buf);
513 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200514 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100515 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100516 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100517 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100518
Willy Tarreaubf883e02014-11-25 21:10:35 +0100519 /* if we're certain to have at least 1 buffer available, and there is
520 * someone waiting, we can wake up a waiter and offer them.
521 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100522 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200523 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100524}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200525
Willy Tarreau87b09662015-04-03 00:22:06 +0200526void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100527{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200528 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100529 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200530 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200531 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100532 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100533
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100534 bytes = s->req.total - s->logs.bytes_in;
535 s->logs.bytes_in = s->req.total;
536 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200537 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
538 HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100539
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100540 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200541 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200542
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200543 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200544 HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200545
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100546 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200547 struct stkctr *stkctr = &s->stkctr[i];
548
Emeric Brun819fc6f2017-06-13 19:37:32 +0200549 ts = stkctr_entry(stkctr);
550 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200551 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200552 ts = stkctr_entry(stkctr);
553 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200554 continue;
555 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200556
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100557 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200558 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200559 if (ptr1)
560 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200561
Emeric Brun819fc6f2017-06-13 19:37:32 +0200562 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200563 if (ptr2)
564 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200565 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100566 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200567
568 /* If data was modified, we need to touch to re-schedule sync */
569 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200570 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100571 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100572 }
573
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100574 bytes = s->res.total - s->logs.bytes_out;
575 s->logs.bytes_out = s->res.total;
576 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200577 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
578 HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100579
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100580 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200581 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200582
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200583 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200584 HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200585
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100586 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200587 struct stkctr *stkctr = &s->stkctr[i];
588
Emeric Brun819fc6f2017-06-13 19:37:32 +0200589 ts = stkctr_entry(stkctr);
590 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200591 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200592 ts = stkctr_entry(stkctr);
593 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200594 continue;
595 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200596
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100597 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200598 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200599 if (ptr1)
600 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200601
Emeric Brun819fc6f2017-06-13 19:37:32 +0200602 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200603 if (ptr2)
604 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200605 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100606 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200607
608 /* If data was modified, we need to touch to re-schedule sync */
609 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200610 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100611 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100612 }
613}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200614
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100615/* This function is called with (si->state == SI_ST_CON) meaning that a
616 * connection was attempted and that the file descriptor is already allocated.
617 * We must check for establishment, error and abort. Possible output states
618 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
619 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200620 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100621 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200622static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100623{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100624 struct stream_interface *si = &s->si[1];
625 struct channel *req = &s->req;
626 struct channel *rep = &s->res;
Olivier Houchard14547b22018-11-29 18:01:46 +0100627 struct conn_stream *srv_cs = objt_cs(si->end);
628 struct connection *conn = NULL;
629
630 if (!srv_cs)
631 conn = objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100632
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100633 /* If we got an error, or if nothing happened and the connection timed
634 * out, we must give up. The CER state handler will take care of retry
635 * attempts and error reports.
636 */
637 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800638 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100639 /* Some data were sent past the connection establishment,
640 * so we need to pretend we're established to log correctly
641 * and let later states handle the failure.
642 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100643 si->state = SI_ST_EST;
644 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100645 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100646 return 1;
647 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100648 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100649 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100650
Olivier Houchard201b9f42018-11-21 00:16:29 +0100651 if (srv_cs)
652 cs_close(srv_cs);
Olivier Houchard14547b22018-11-29 18:01:46 +0100653 else if (conn) {
654 conn_stop_tracking(conn);
655 conn_full_close(conn);
656 conn_free(conn);
657 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100658
659 if (si->err_type)
660 return 0;
661
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100662 if (si->flags & SI_FL_ERR)
663 si->err_type = SI_ET_CONN_ERR;
664 else
665 si->err_type = SI_ET_CONN_TO;
666 return 0;
667 }
668
669 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800670 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100671 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200672 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
Willy Tarreauede3d882018-10-24 17:17:56 +0200673 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100674 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100675 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200676 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100677 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100678 if (s->srv_error)
679 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100680 return 1;
681 }
682
683 /* we need to wait a bit more if there was no activity either */
Christopher Faulet3b88b8d2018-10-26 17:36:03 +0200684 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100685 return 1;
686
687 /* OK, this means that a connection succeeded. The caller will be
688 * responsible for handling the transition from CON to EST.
689 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100690 si->state = SI_ST_EST;
691 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100692 return 1;
693}
694
695/* This function is called with (si->state == SI_ST_CER) meaning that a
696 * previous connection attempt has failed and that the file descriptor
697 * has already been released. Possible causes include asynchronous error
698 * notification and time out. Possible output states are SI_ST_CLO when
699 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
700 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
701 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
702 * marked as in error state. It returns 0.
703 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200704static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100705{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100706 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200707 struct conn_stream *cs = objt_cs(si->end);
708 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100709
Willy Tarreau87b09662015-04-03 00:22:06 +0200710 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100711 if (objt_server(s->target)) {
712 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100713
Willy Tarreaue7dff022015-04-03 01:14:29 +0200714 if (s->flags & SF_CURR_SESS) {
715 s->flags &= ~SF_CURR_SESS;
Willy Tarreaub54c40a2018-12-02 19:28:41 +0100716 HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100717 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200718
719 if ((si->flags & SI_FL_ERR) &&
720 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
721 /* We tried to connect to a server which is configured
722 * with "verify required" and which doesn't have the
723 * "verifyhost" directive. The server presented a wrong
724 * certificate (a certificate for an unexpected name),
725 * which implies that we have used SNI in the handshake,
726 * and that the server doesn't have the associated cert
727 * and presented a default one.
728 *
729 * This is a serious enough issue not to retry. It's
730 * especially important because this wrong name might
731 * either be the result of a configuration error, and
732 * retrying will only hammer the server, or is caused
733 * by the use of a wrong SNI value, most likely
734 * provided by the client and we don't want to let the
735 * client provoke retries.
736 */
737 si->conn_retries = 0;
738 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100739 }
740
741 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200742 si->conn_retries--;
743 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100744 if (!si->err_type) {
745 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100746 }
747
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100748 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200749 HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200750 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100751 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100752 if (may_dequeue_tasks(objt_server(s->target), s->be))
753 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100754
755 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200756 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100757 s->req.flags |= CF_WRITE_ERROR;
758 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100759
760 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100761 if (s->srv_error)
762 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100763 return 0;
764 }
765
766 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700767 * retry on another server. By default this redispatch occurs on the
768 * last retry, but if configured we allow redispatches to occur on
769 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200770 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100771 * bit to ignore any persistence cookie. We won't count a retry nor a
772 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200773 * If the connection is not persistent, the balancing algorithm is not
774 * determinist (round robin) and there is more than one active server,
775 * we accept to perform an immediate redispatch without waiting since
776 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100777 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200778 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700779 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200780 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100781 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700782 ((s->be->conn_retries - si->conn_retries) %
783 s->be->redispatch_after == 0)) ||
784 ((s->be->redispatch_after < 0) &&
785 ((s->be->conn_retries - si->conn_retries) %
786 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200787 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700788 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100789 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100790 if (may_dequeue_tasks(objt_server(s->target), s->be))
791 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100792
Willy Tarreaue7dff022015-04-03 01:14:29 +0200793 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100794 si->state = SI_ST_REQ;
795 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100796 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200797 HA_ATOMIC_ADD(&objt_server(s->target)->counters.retries, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200798 HA_ATOMIC_ADD(&s->be->be_counters.retries, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100799 si->state = SI_ST_ASS;
800 }
801
802 if (si->flags & SI_FL_ERR) {
803 /* The error was an asynchronous connection error, and we will
804 * likely have to retry connecting to the same server, most
805 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200806 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100807 */
808
Willy Tarreaub0290662014-06-13 17:04:44 +0200809 int delay = 1000;
810
811 if (s->be->timeout.connect && s->be->timeout.connect < delay)
812 delay = s->be->timeout.connect;
813
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100814 if (!si->err_type)
815 si->err_type = SI_ET_CONN_ERR;
816
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200817 /* only wait when we're retrying on the same server */
818 if (si->state == SI_ST_ASS ||
819 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
820 (s->be->srv_act <= 1)) {
821 si->state = SI_ST_TAR;
822 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
823 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100824 return 0;
825 }
826 return 0;
827}
828
829/*
830 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200831 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200832 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100833 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200834static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100835{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100836 struct stream_interface *si = &s->si[1];
837 struct channel *req = &s->req;
838 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100839
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100840 /* First, centralize the timers information */
841 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
842 si->exp = TICK_ETERNITY;
843
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100844 if (objt_server(s->target))
845 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100846
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100847 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100848 /* if the user wants to log as soon as possible, without counting
849 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200850 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau66425e32018-07-25 06:55:12 +0200851 /* note: no pend_pos here, session is established */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100852 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100853 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100854 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100855 }
856 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100857 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100858 }
859
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100860 if (!(s->flags & SF_TUNNEL)) {
861 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100862
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100863 /* Be sure to filter response headers if the backend is an HTTP proxy
864 * and if there are filters attached to the stream. */
865 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
866 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
867 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100868
Willy Tarreau8bb2ffb2018-11-14 17:54:13 +0100869 si_rx_endp_more(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200870 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200871 if (req->flags & CF_WAKE_CONNECT) {
872 req->flags |= CF_WAKE_ONCE;
873 req->flags &= ~CF_WAKE_CONNECT;
874 }
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200875 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200876 /* real connections have timeouts */
877 req->wto = s->be->timeout.server;
878 rep->rto = s->be->timeout.server;
Olivier Houchard47e9a1a2018-11-07 17:55:19 +0100879 /* The connection is now established, try to read data from the
880 * underlying layer, and subscribe to recv events. We use a
881 * delayed recv here to give a chance to the data to flow back
882 * by the time we process other tasks.
883 */
884 si_chk_rcv(si);
Willy Tarreaud04e8582010-05-31 12:31:35 +0200885 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100886 req->wex = TICK_ETERNITY;
887}
888
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700889/* Check if the connection request is in such a state that it can be aborted. */
890static int check_req_may_abort(struct channel *req, struct stream *s)
891{
892 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100893 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100894 (channel_is_empty(req) ||
895 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700896}
897
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100898/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
899 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100900 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
901 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
902 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100903 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200904static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100905{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100906 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100907 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100908 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100909
Christopher Faulet45073512018-07-20 10:16:29 +0200910 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 +0100911 now_ms, __FUNCTION__,
912 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400913 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100914 req->rex, s->res.wex,
915 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200916 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 +0100917
918 if (si->state == SI_ST_ASS) {
919 /* Server assigned to connection request, we have to try to connect now */
920 int conn_err;
921
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700922 /* Before we try to initiate the connection, see if the
923 * request may be aborted instead.
924 */
925 if (check_req_may_abort(req, s)) {
926 si->err_type |= SI_ET_CONN_ABRT;
927 goto abort_connection;
928 }
929
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100930 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100931 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100932
Willy Tarreaue7dff022015-04-03 01:14:29 +0200933 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100934 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100935 if (srv)
936 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500937 if (srv)
938 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100939 return;
940 }
941
942 /* We have received a synchronous error. We might have to
943 * abort, retry immediately or redispatch.
944 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200945 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100946 if (!si->err_type) {
947 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100948 }
949
Willy Tarreau827aee92011-03-10 16:55:02 +0100950 if (srv)
951 srv_inc_sess_ctr(srv);
952 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500953 srv_set_sess_last(srv);
954 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200955 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200956 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100957
Willy Tarreau87b09662015-04-03 00:22:06 +0200958 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100959 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100960 if (may_dequeue_tasks(srv, s->be))
961 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100962
963 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200964 si_shutr(si);
965 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100966 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100967
968 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
969
Willy Tarreau66425e32018-07-25 06:55:12 +0200970 /* we may need to know the position in the queue for logging */
971 pendconn_cond_unlink(s->pend_pos);
972
Willy Tarreau87b09662015-04-03 00:22:06 +0200973 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100974 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100975 if (s->srv_error)
976 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100977 return;
978 }
979
980 /* We are facing a retryable error, but we don't want to run a
981 * turn-around now, as the problem is likely a source port
982 * allocation problem, so we want to retry now.
983 */
984 si->state = SI_ST_CER;
985 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100986 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100987 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
988 return;
989 }
990 else if (si->state == SI_ST_QUE) {
991 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +0100992 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100993 /* The connection is not in the queue anymore. Either
994 * we have a server connection slot available and we
995 * go directly to the assigned state, or we need to
996 * load-balance first and go to the INI state.
997 */
998 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200999 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001000 si->state = SI_ST_REQ;
1001 else {
1002 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1003 si->state = SI_ST_ASS;
1004 }
1005 return;
1006 }
1007
1008 /* Connection request still in queue... */
1009 if (si->flags & SI_FL_EXP) {
1010 /* ... and timeout expired */
1011 si->exp = TICK_ETERNITY;
1012 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001013
1014 /* we may need to know the position in the queue for logging */
1015 pendconn_cond_unlink(s->pend_pos);
1016
Willy Tarreau827aee92011-03-10 16:55:02 +01001017 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001018 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001019 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +02001020 si_shutr(si);
1021 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001022 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001023 if (!si->err_type)
1024 si->err_type = SI_ET_QUEUE_TO;
1025 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001026 if (s->srv_error)
1027 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001028 return;
1029 }
1030
1031 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001032 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001033 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001034
1035 /* we may need to know the position in the queue for logging */
1036 pendconn_cond_unlink(s->pend_pos);
1037
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001038 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001039 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001040 }
1041
1042 /* Nothing changed */
1043 return;
1044 }
1045 else if (si->state == SI_ST_TAR) {
1046 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001047 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001048 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001049 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001050 }
1051
1052 if (!(si->flags & SI_FL_EXP))
1053 return; /* still in turn-around */
1054
1055 si->exp = TICK_ETERNITY;
1056
Willy Tarreau87b09662015-04-03 00:22:06 +02001057 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001058 * marked "assigned".
1059 * FIXME: Should we force a redispatch attempt when the server is down ?
1060 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001061 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001062 si->state = SI_ST_ASS;
1063 else
1064 si->state = SI_ST_REQ;
1065 return;
1066 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001067 return;
1068
1069abort_connection:
1070 /* give up */
1071 si->exp = TICK_ETERNITY;
1072 si_shutr(si);
1073 si_shutw(si);
1074 si->state = SI_ST_CLO;
1075 if (s->srv_error)
1076 s->srv_error(s, si);
1077 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001078}
1079
Willy Tarreau87b09662015-04-03 00:22:06 +02001080/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001081 * also counts a failed request if the server state has not reached the request
1082 * stage.
1083 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001084static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001085{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001086 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +09001087 if (s->si[1].state < SI_ST_REQ) {
1088
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001089 HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001090 if (strm_li(s) && strm_li(s)->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +02001091 HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001092
Willy Tarreaue7dff022015-04-03 01:14:29 +02001093 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001094 }
1095 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001096 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +09001097 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001098 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001099 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001100 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001101 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001102 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001103 }
1104}
1105
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001106/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001107 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1108 * a real connection to a server, indicating that a server has been assigned,
1109 * or SI_ST_EST for a successful connection to an applet. It may also return
1110 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001111 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001112static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001113{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001114 struct stream_interface *si = &s->si[1];
1115
Christopher Faulet45073512018-07-20 10:16:29 +02001116 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 +01001117 now_ms, __FUNCTION__,
1118 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001119 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001120 s->req.rex, s->res.wex,
1121 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001122 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 +01001123
1124 if (si->state != SI_ST_REQ)
1125 return;
1126
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001127 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1128 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001129 struct appctx *appctx = objt_appctx(si->end);
1130
1131 if (!appctx || appctx->applet != __objt_applet(s->target))
1132 appctx = stream_int_register_handler(si, objt_applet(s->target));
1133
1134 if (!appctx) {
1135 /* No more memory, let's immediately abort. Force the
1136 * error code to ignore the ERR_LOCAL which is not a
1137 * real error.
1138 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001139 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001140
1141 si_shutr(si);
1142 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001143 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001144 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001145 si->state = SI_ST_CLO;
1146 if (s->srv_error)
1147 s->srv_error(s, si);
1148 return;
1149 }
1150
Willy Tarreauee8269e2017-11-23 17:34:29 +01001151 if (tv_iszero(&s->logs.tv_request))
1152 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001153 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001154 si->state = SI_ST_EST;
1155 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001156 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001157 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001158 return;
1159 }
1160
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001161 /* Try to assign a server */
1162 if (srv_redispatch_connect(s) != 0) {
1163 /* We did not get a server. Either we queued the
1164 * connection request, or we encountered an error.
1165 */
1166 if (si->state == SI_ST_QUE)
1167 return;
1168
1169 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001170 si_shutr(si);
1171 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001172 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001173 if (!si->err_type)
1174 si->err_type = SI_ET_CONN_OTHER;
1175 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001176 if (s->srv_error)
1177 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001178 return;
1179 }
1180
1181 /* The server is assigned */
1182 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1183 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001184 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001185}
1186
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001187/* This function parses the use-service action ruleset. It executes
1188 * the associated ACL and set an applet as a stream or txn final node.
1189 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1190 * consistent state. It returns ACT_RET_STOP in succes case because
1191 * use-service must be a terminal action. Returns ACT_RET_YIELD
1192 * if the initialisation function require more data.
1193 */
1194enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1195 struct session *sess, struct stream *s, int flags)
1196
1197{
1198 struct appctx *appctx;
1199
1200 /* Initialises the applet if it is required. */
1201 if (flags & ACT_FLAG_FIRST) {
1202 /* Register applet. this function schedules the applet. */
1203 s->target = &rule->applet.obj_type;
1204 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1205 return ACT_RET_ERR;
1206
1207 /* Initialise the context. */
1208 appctx = si_appctx(&s->si[1]);
1209 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1210 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001211
1212 /* enable the minimally required analyzers in case of HTTP
1213 * keep-alive to properly handle keep-alive and compression
1214 * on the HTTP response.
1215 */
1216 if (rule->from == ACT_F_HTTP_REQ) {
1217 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1218 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1219 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001220 }
1221 else
1222 appctx = si_appctx(&s->si[1]);
1223
1224 /* Stops the applet sheduling, in case of the init function miss
1225 * some data.
1226 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001227 si_stop_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001228
1229 /* Call initialisation. */
1230 if (rule->applet.init)
1231 switch (rule->applet.init(appctx, px, s)) {
1232 case 0: return ACT_RET_ERR;
1233 case 1: break;
1234 default: return ACT_RET_YIELD;
1235 }
1236
1237 /* Now we can schedule the applet. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001238 si_cant_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001239 appctx_wakeup(appctx);
1240
1241 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001242 HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001243
1244 /* The flag SF_ASSIGNED prevent from server assignment. */
1245 s->flags |= SF_ASSIGNED;
1246
1247 return ACT_RET_STOP;
1248}
1249
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001250/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001251 * if appropriate. The default_backend rule is also considered, then the
1252 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001253 * It returns 1 if the processing can continue on next analysers, or zero if it
1254 * either needs more data or wants to immediately abort the request.
1255 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001256static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001257{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001258 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001259 struct session *sess = s->sess;
1260 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001261
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001262 req->analysers &= ~an_bit;
1263 req->analyse_exp = TICK_ETERNITY;
1264
Christopher Faulet45073512018-07-20 10:16:29 +02001265 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 +02001266 now_ms, __FUNCTION__,
1267 s,
1268 req,
1269 req->rex, req->wex,
1270 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001271 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001272 req->analysers);
1273
1274 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001275 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001276 struct switching_rule *rule;
1277
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001278 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001279 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001280
Willy Tarreauf51658d2014-04-23 01:21:56 +02001281 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001282 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001283 ret = acl_pass(ret);
1284 if (rule->cond->pol == ACL_COND_UNLESS)
1285 ret = !ret;
1286 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001287
1288 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001289 /* If the backend name is dynamic, try to resolve the name.
1290 * If we can't resolve the name, or if any error occurs, break
1291 * the loop and fallback to the default backend.
1292 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001293 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001294
1295 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001296 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001297
1298 tmp = alloc_trash_chunk();
1299 if (!tmp)
1300 goto sw_failed;
1301
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001302 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1303 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001304
1305 free_trash_chunk(tmp);
1306 tmp = NULL;
1307
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001308 if (!backend)
1309 break;
1310 }
1311 else
1312 backend = rule->be.backend;
1313
Willy Tarreau87b09662015-04-03 00:22:06 +02001314 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001315 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001316 break;
1317 }
1318 }
1319
1320 /* To ensure correct connection accounting on the backend, we
1321 * have to assign one if it was not set (eg: a listen). This
1322 * measure also takes care of correctly setting the default
1323 * backend if any.
1324 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001325 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001326 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001327 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001328 }
1329
Willy Tarreaufb356202010-08-03 14:02:05 +02001330 /* 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 +02001331 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001332 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1333 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001334 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001335 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001336
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001337 /* 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 +02001338 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001339 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001340 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001341 int ret = 1;
1342
1343 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001344 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 +01001345 ret = acl_pass(ret);
1346 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1347 ret = !ret;
1348 }
1349
1350 if (ret) {
1351 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001352 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001353 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001354 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001355 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001356 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001357 break;
1358 }
1359 }
1360
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001361 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001362
1363 sw_failed:
1364 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001365 channel_abort(&s->req);
1366 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001367
Willy Tarreaue7dff022015-04-03 01:14:29 +02001368 if (!(s->flags & SF_ERR_MASK))
1369 s->flags |= SF_ERR_RESOURCE;
1370 if (!(s->flags & SF_FINST_MASK))
1371 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001372
Willy Tarreaueee5b512015-04-03 23:46:31 +02001373 if (s->txn)
1374 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001375 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001376 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001377 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001378}
1379
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001380/* This stream analyser works on a request. It applies all use-server rules on
1381 * it then returns 1. The data must already be present in the buffer otherwise
1382 * they won't match. It always returns 1.
1383 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001384static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001385{
1386 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001387 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001388 struct server_rule *rule;
1389
Christopher Faulet45073512018-07-20 10:16:29 +02001390 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 +02001391 now_ms, __FUNCTION__,
1392 s,
1393 req,
1394 req->rex, req->wex,
1395 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001396 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001397 req->analysers);
1398
Willy Tarreaue7dff022015-04-03 01:14:29 +02001399 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001400 list_for_each_entry(rule, &px->server_rules, list) {
1401 int ret;
1402
Willy Tarreau192252e2015-04-04 01:47:55 +02001403 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001404 ret = acl_pass(ret);
1405 if (rule->cond->pol == ACL_COND_UNLESS)
1406 ret = !ret;
1407
1408 if (ret) {
1409 struct server *srv = rule->srv.ptr;
1410
Emeric Brun52a91d32017-08-31 14:41:55 +02001411 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001412 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001413 (s->flags & SF_FORCE_PRST)) {
1414 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001415 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001416 break;
1417 }
1418 /* if the server is not UP, let's go on with next rules
1419 * just in case another one is suited.
1420 */
1421 }
1422 }
1423 }
1424
1425 req->analysers &= ~an_bit;
1426 req->analyse_exp = TICK_ETERNITY;
1427 return 1;
1428}
1429
Emeric Brun1d33b292010-01-04 15:47:17 +01001430/* This stream analyser works on a request. It applies all sticking rules on
1431 * it then returns 1. The data must already be present in the buffer otherwise
1432 * they won't match. It always returns 1.
1433 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001434static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001435{
1436 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001437 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001438 struct sticking_rule *rule;
1439
Christopher Faulet45073512018-07-20 10:16:29 +02001440 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 +01001441 now_ms, __FUNCTION__,
1442 s,
1443 req,
1444 req->rex, req->wex,
1445 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001446 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001447 req->analysers);
1448
1449 list_for_each_entry(rule, &px->sticking_rules, list) {
1450 int ret = 1 ;
1451 int i;
1452
Willy Tarreau9667a802013-12-09 12:52:13 +01001453 /* Only the first stick store-request of each table is applied
1454 * and other ones are ignored. The purpose is to allow complex
1455 * configurations which look for multiple entries by decreasing
1456 * order of precision and to stop at the first which matches.
1457 * An example could be a store of the IP address from an HTTP
1458 * header first, then from the source if not found.
1459 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001460 for (i = 0; i < s->store_count; i++) {
1461 if (rule->table.t == s->store[i].table)
1462 break;
1463 }
1464
1465 if (i != s->store_count)
1466 continue;
1467
1468 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001469 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001470 ret = acl_pass(ret);
1471 if (rule->cond->pol == ACL_COND_UNLESS)
1472 ret = !ret;
1473 }
1474
1475 if (ret) {
1476 struct stktable_key *key;
1477
Willy Tarreau192252e2015-04-04 01:47:55 +02001478 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 +01001479 if (!key)
1480 continue;
1481
1482 if (rule->flags & STK_IS_MATCH) {
1483 struct stksess *ts;
1484
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001485 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001486 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001487 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001488 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001489
1490 /* srv found in table */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001491 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001492 ptr = __stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001493 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001494 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun1d33b292010-01-04 15:47:17 +01001495 if (node) {
1496 struct server *srv;
1497
1498 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001499 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001500 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001501 (s->flags & SF_FORCE_PRST)) {
1502 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001503 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001504 }
1505 }
1506 }
Emeric Brun819fc6f2017-06-13 19:37:32 +02001507 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001508 }
1509 }
1510 if (rule->flags & STK_IS_STORE) {
1511 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1512 struct stksess *ts;
1513
1514 ts = stksess_new(rule->table.t, key);
1515 if (ts) {
1516 s->store[s->store_count].table = rule->table.t;
1517 s->store[s->store_count++].ts = ts;
1518 }
1519 }
1520 }
1521 }
1522 }
1523
1524 req->analysers &= ~an_bit;
1525 req->analyse_exp = TICK_ETERNITY;
1526 return 1;
1527}
1528
1529/* This stream analyser works on a response. It applies all store rules on it
1530 * then returns 1. The data must already be present in the buffer otherwise
1531 * they won't match. It always returns 1.
1532 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001533static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001534{
1535 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001536 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001537 struct sticking_rule *rule;
1538 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001539 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001540
Christopher Faulet45073512018-07-20 10:16:29 +02001541 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 +01001542 now_ms, __FUNCTION__,
1543 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001544 rep,
1545 rep->rex, rep->wex,
1546 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001547 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001548 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001549
1550 list_for_each_entry(rule, &px->storersp_rules, list) {
1551 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001552
Willy Tarreau9667a802013-12-09 12:52:13 +01001553 /* Only the first stick store-response of each table is applied
1554 * and other ones are ignored. The purpose is to allow complex
1555 * configurations which look for multiple entries by decreasing
1556 * order of precision and to stop at the first which matches.
1557 * An example could be a store of a set-cookie value, with a
1558 * fallback to a parameter found in a 302 redirect.
1559 *
1560 * The store-response rules are not allowed to override the
1561 * store-request rules for the same table, but they may coexist.
1562 * Thus we can have up to one store-request entry and one store-
1563 * response entry for the same table at any time.
1564 */
1565 for (i = nbreq; i < s->store_count; i++) {
1566 if (rule->table.t == s->store[i].table)
1567 break;
1568 }
1569
1570 /* skip existing entries for this table */
1571 if (i < s->store_count)
1572 continue;
1573
Emeric Brun1d33b292010-01-04 15:47:17 +01001574 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001575 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001576 ret = acl_pass(ret);
1577 if (rule->cond->pol == ACL_COND_UNLESS)
1578 ret = !ret;
1579 }
1580
1581 if (ret) {
1582 struct stktable_key *key;
1583
Willy Tarreau192252e2015-04-04 01:47:55 +02001584 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 +01001585 if (!key)
1586 continue;
1587
Willy Tarreau37e340c2013-12-06 23:05:21 +01001588 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001589 struct stksess *ts;
1590
1591 ts = stksess_new(rule->table.t, key);
1592 if (ts) {
1593 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001594 s->store[s->store_count++].ts = ts;
1595 }
1596 }
1597 }
1598 }
1599
1600 /* process store request and store response */
1601 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001602 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001603 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001604
Willy Tarreauc93cd162014-05-13 15:54:22 +02001605 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001606 stksess_free(s->store[i].table, s->store[i].ts);
1607 s->store[i].ts = NULL;
1608 continue;
1609 }
1610
Emeric Brun819fc6f2017-06-13 19:37:32 +02001611 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1612 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001613 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001614 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001615 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001616 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001617
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001618 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001619 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
1620 stktable_data_cast(ptr, server_id) = __objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001621 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001622 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001623 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001624 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001625
1626 rep->analysers &= ~an_bit;
1627 rep->analyse_exp = TICK_ETERNITY;
1628 return 1;
1629}
1630
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001631/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001632 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001633 */
1634#define UPDATE_ANALYSERS(real, list, back, flag) { \
1635 list = (((list) & ~(flag)) | ~(back)) & (real); \
1636 back = real; \
1637 if (!(list)) \
1638 break; \
1639 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1640 continue; \
1641}
1642
Christopher Fauleta9215b72016-05-11 17:06:28 +02001643/* These 2 following macros call an analayzer for the specified channel if the
1644 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001645 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001646 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001647 * AN_REQ/RES_HTTP_XFER_BODY) */
1648#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1649 { \
1650 if ((list) & (flag)) { \
1651 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001652 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001653 break; \
1654 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1655 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001656 if (!flt_post_analyze((strm), (chn), (flag))) \
1657 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001658 } \
1659 else { \
1660 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1661 break; \
1662 } \
1663 UPDATE_ANALYSERS((chn)->analysers, (list), \
1664 (back), (flag)); \
1665 } \
1666 }
1667
1668#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1669 { \
1670 if ((list) & (flag)) { \
1671 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1672 break; \
1673 UPDATE_ANALYSERS((chn)->analysers, (list), \
1674 (back), (flag)); \
1675 } \
1676 }
1677
Willy Tarreau87b09662015-04-03 00:22:06 +02001678/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001679 * then puts it back to the wait queue in a clean state, or cleans up its
1680 * resources if it must be deleted. Returns in <next> the date the task wants
1681 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1682 * nothing too many times, the request and response buffers flags are monitored
1683 * and each function is called only if at least another function has changed at
1684 * least one flag it is interested in.
1685 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001686struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001687{
Willy Tarreau827aee92011-03-10 16:55:02 +01001688 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001689 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001690 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001691 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001692 unsigned int rq_prod_last, rq_cons_last;
1693 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001694 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001695 struct channel *req, *res;
1696 struct stream_interface *si_f, *si_b;
1697
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001698 activity[tid].stream++;
1699
Willy Tarreau8f128b42014-11-28 15:07:47 +01001700 req = &s->req;
1701 res = &s->res;
1702
1703 si_f = &s->si[0];
1704 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001705
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001706 /* First, attempt to receive pending data from I/O layers */
Willy Tarreauade64782018-11-17 19:51:07 +01001707 si_sync_recv(si_f);
1708 si_sync_recv(si_b);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001709
Olivier Houchard53216e72018-10-10 15:46:36 +02001710redo:
Olivier Houchardc2aa7112018-09-11 18:27:21 +02001711
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001712 //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 +01001713 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001714
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001715 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001716 if (s->txn)
1717 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001718
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001719 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001720 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1721 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001722
1723 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001724 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1725 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001726
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001727 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001728 si_f->flags |= SI_FL_DONT_WAKE;
1729 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001730
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001731 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001732 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001733
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001734 /* 1a: Check for low level timeouts if needed. We just set a flag on
1735 * stream interfaces when their timeouts have expired.
1736 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001737 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001738 stream_int_check_timeouts(si_f);
1739 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001740
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001741 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001742 * for future reads or writes. Note: this will also concern upper layers
1743 * but we do not touch any other flag. We must be careful and correctly
1744 * detect state changes when calling them.
1745 */
1746
Willy Tarreau8f128b42014-11-28 15:07:47 +01001747 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001748
Willy Tarreau8f128b42014-11-28 15:07:47 +01001749 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1750 si_b->flags |= SI_FL_NOLINGER;
1751 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001752 }
1753
Willy Tarreau8f128b42014-11-28 15:07:47 +01001754 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1755 if (si_f->flags & SI_FL_NOHALF)
1756 si_f->flags |= SI_FL_NOLINGER;
1757 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001758 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001759
Willy Tarreau8f128b42014-11-28 15:07:47 +01001760 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001761
Willy Tarreau8f128b42014-11-28 15:07:47 +01001762 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1763 si_f->flags |= SI_FL_NOLINGER;
1764 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001765 }
1766
Willy Tarreau8f128b42014-11-28 15:07:47 +01001767 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1768 if (si_b->flags & SI_FL_NOHALF)
1769 si_b->flags |= SI_FL_NOLINGER;
1770 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001771 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001772
Christopher Fauleta00d8172016-11-10 14:58:05 +01001773 if (HAS_FILTERS(s))
1774 flt_stream_check_timeouts(s);
1775
Willy Tarreau798f4322012-11-08 14:49:17 +01001776 /* Once in a while we're woken up because the task expires. But
1777 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001778 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001779 * timeout needs to be refreshed.
1780 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001781 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001782 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Willy Tarreauede3d882018-10-24 17:17:56 +02001783 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001784 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001785 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001786 si_f->flags &= ~SI_FL_DONT_WAKE;
1787 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001788 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001789 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001790 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001791
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001792 /* below we may emit error messages so we have to ensure that we have
1793 * our buffers properly allocated.
1794 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001795 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001796 /* No buffer available, we've been subscribed to the list of
1797 * buffer waiters, let's wait for our turn.
1798 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001799 si_f->flags &= ~SI_FL_DONT_WAKE;
1800 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001801 goto update_exp_and_leave;
1802 }
1803
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001804 /* 1b: check for low-level errors reported at the stream interface.
1805 * First we check if it's a retryable error (in which case we don't
1806 * want to tell the buffer). Otherwise we report the error one level
1807 * upper by setting flags into the buffers. Note that the side towards
1808 * the client cannot have connect (hence retryable) errors. Also, the
1809 * connection setup code must be able to deal with any type of abort.
1810 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001811 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001812 if (unlikely(si_f->flags & SI_FL_ERR)) {
1813 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1814 si_shutr(si_f);
1815 si_shutw(si_f);
1816 stream_int_report_error(si_f);
1817 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001818 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1819 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001820 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001821 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001822 if (!(s->flags & SF_ERR_MASK))
1823 s->flags |= SF_ERR_CLICL;
1824 if (!(s->flags & SF_FINST_MASK))
1825 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001826 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001827 }
1828 }
1829
Willy Tarreau8f128b42014-11-28 15:07:47 +01001830 if (unlikely(si_b->flags & SI_FL_ERR)) {
1831 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1832 si_shutr(si_b);
1833 si_shutw(si_b);
1834 stream_int_report_error(si_b);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001835 HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001836 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001837 HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001838 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001839 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1840 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001841 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001842 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001843 if (!(s->flags & SF_ERR_MASK))
1844 s->flags |= SF_ERR_SRVCL;
1845 if (!(s->flags & SF_FINST_MASK))
1846 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001847 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001848 }
1849 /* note: maybe we should process connection errors here ? */
1850 }
1851
Willy Tarreau8f128b42014-11-28 15:07:47 +01001852 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001853 /* we were trying to establish a connection on the server side,
1854 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1855 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001856 if (unlikely(!sess_update_st_con_tcp(s)))
1857 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001858 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001859 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001860
1861 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1862 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1863 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1864 */
1865 }
1866
Willy Tarreau8f128b42014-11-28 15:07:47 +01001867 rq_prod_last = si_f->state;
1868 rq_cons_last = si_b->state;
1869 rp_cons_last = si_f->state;
1870 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001871
1872 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001873 /* Check for connection closure */
1874
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001875 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001876 "[%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 +01001877 now_ms, __FUNCTION__, __LINE__,
1878 t,
1879 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001880 req, res,
1881 req->rex, res->wex,
1882 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001883 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 +01001884 si_f->err_type, si_b->err_type,
1885 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001886
1887 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001888 if (unlikely(si_f->state == SI_ST_DIS))
1889 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001890
1891 /* When a server-side connection is released, we have to count it and
1892 * check for pending connections on this server.
1893 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001894 if (unlikely(si_b->state == SI_ST_DIS)) {
1895 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001896 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001897 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001898 if (s->flags & SF_CURR_SESS) {
1899 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +02001900 HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001901 }
1902 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001903 if (may_dequeue_tasks(srv, s->be))
1904 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001905 }
1906 }
1907
1908 /*
1909 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1910 * at this point.
1911 */
1912
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001913 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001914 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001915 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1916 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001917 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001918 si_f->state != rq_prod_last ||
1919 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001920 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001921 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001922
Willy Tarreau8f128b42014-11-28 15:07:47 +01001923 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001924 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001925 unsigned int ana_list;
1926 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001927
Willy Tarreau90deb182010-01-07 00:20:41 +01001928 /* it's up to the analysers to stop new connections,
1929 * disable reading or closing. Note: if an analyser
1930 * disables any of these bits, it is responsible for
1931 * enabling them again when it disables itself, so
1932 * that other analysers are called in similar conditions.
1933 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001934 channel_auto_read(req);
1935 channel_auto_connect(req);
1936 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001937
1938 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001939 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001940 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001941 * the list when not needed. Any analyser may return 0
1942 * to break out of the loop, either because of missing
1943 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001944 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001945 * analyser, and we may loop again if other analysers
1946 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001947 *
1948 * We build a list of analysers to run. We evaluate all
1949 * of these analysers in the order of the lower bit to
1950 * the higher bit. This ordering is very important.
1951 * An analyser will often add/remove other analysers,
1952 * including itself. Any changes to itself have no effect
1953 * on the loop. If it removes any other analysers, we
1954 * want those analysers not to be called anymore during
1955 * this loop. If it adds an analyser that is located
1956 * after itself, we want it to be scheduled for being
1957 * processed during the loop. If it adds an analyser
1958 * which is located before it, we want it to switch to
1959 * it immediately, even if it has already been called
1960 * once but removed since.
1961 *
1962 * In order to achieve this, we compare the analyser
1963 * list after the call with a copy of it before the
1964 * call. The work list is fed with analyser bits that
1965 * appeared during the call. Then we compare previous
1966 * work list with the new one, and check the bits that
1967 * appeared. If the lowest of these bits is lower than
1968 * the current bit, it means we have enabled a previous
1969 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001970 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001971
Willy Tarreau8f128b42014-11-28 15:07:47 +01001972 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001973 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001974 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001975 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001976 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1977 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1978 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1979 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1980 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001981 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001982 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1983 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1984 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1985 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1986 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1987 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1988 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001989 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001990 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02001991 ANALYZE (s, req, pcli_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001992 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1993 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001994 break;
1995 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001996 }
Willy Tarreau84455332009-03-15 22:34:05 +01001997
Willy Tarreau8f128b42014-11-28 15:07:47 +01001998 rq_prod_last = si_f->state;
1999 rq_cons_last = si_b->state;
2000 req->flags &= ~CF_WAKE_ONCE;
2001 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002002
Willy Tarreau8f128b42014-11-28 15:07:47 +01002003 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002004 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002005 }
2006
Willy Tarreau576507f2010-01-07 00:09:04 +01002007 /* we'll monitor the request analysers while parsing the response,
2008 * because some response analysers may indirectly enable new request
2009 * analysers (eg: HTTP keep-alive).
2010 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002011 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01002012
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002013 resync_response:
2014 /* Analyse response */
2015
Willy Tarreau8f128b42014-11-28 15:07:47 +01002016 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
2017 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002018 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002019 si_f->state != rp_cons_last ||
2020 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002021 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002022 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002023
Willy Tarreau8f128b42014-11-28 15:07:47 +01002024 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002025 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002026 unsigned int ana_list;
2027 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002028
Willy Tarreau90deb182010-01-07 00:20:41 +01002029 /* it's up to the analysers to stop disable reading or
2030 * closing. Note: if an analyser disables any of these
2031 * bits, it is responsible for enabling them again when
2032 * it disables itself, so that other analysers are called
2033 * in similar conditions.
2034 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002035 channel_auto_read(res);
2036 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002037
2038 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002039 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002040 * to MSB. The analysers must remove themselves from
2041 * the list when not needed. Any analyser may return 0
2042 * to break out of the loop, either because of missing
2043 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002044 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002045 * analyser, and we may loop again if other analysers
2046 * are added in the middle.
2047 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002048
Willy Tarreau8f128b42014-11-28 15:07:47 +01002049 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002050 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002051 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002052 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
2053 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002054 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
2055 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
2056 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
2057 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 +01002058 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002059 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002060 ANALYZE (s, res, pcli_wait_for_response, ana_list, ana_back, AN_RES_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002061 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
2062 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002063 break;
2064 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002065 }
2066
Willy Tarreau8f128b42014-11-28 15:07:47 +01002067 rp_cons_last = si_f->state;
2068 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02002069 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002070 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002071
Willy Tarreau8f128b42014-11-28 15:07:47 +01002072 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002073 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002074 }
2075
Willy Tarreau576507f2010-01-07 00:09:04 +01002076 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002077 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002078 goto resync_request;
2079
Willy Tarreau8f128b42014-11-28 15:07:47 +01002080 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002081 goto resync_request;
2082
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002083 /* FIXME: here we should call protocol handlers which rely on
2084 * both buffers.
2085 */
2086
2087
2088 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002089 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002090 * we're just in a data phase here since it means we have not
2091 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002092 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002093 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002094 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002095 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002096 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002097 req->analysers = 0;
2098 if (req->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002099 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2100 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002101 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002102 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002103 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002104 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002105 else if (req->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002106 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2107 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002108 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002109 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002110 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002111 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002112 else if (req->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002113 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2114 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002115 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002116 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002117 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002118 }
2119 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002120 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2121 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002122 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002123 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002124 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002125 }
Willy Tarreau84455332009-03-15 22:34:05 +01002126 sess_set_term_flags(s);
2127 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002128 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002129 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002130 res->analysers = 0;
2131 if (res->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002132 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2133 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002134 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002135 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002136 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002137 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002138 else if (res->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002139 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2140 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002141 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002142 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002143 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002144 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002145 else if (res->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002146 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2147 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002148 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002149 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002150 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002151 }
2152 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002153 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2154 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002155 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002156 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002157 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002158 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002159 sess_set_term_flags(s);
2160 }
Willy Tarreau84455332009-03-15 22:34:05 +01002161 }
2162
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002163 /*
2164 * Here we take care of forwarding unhandled data. This also includes
2165 * connection establishments and shutdown requests.
2166 */
2167
2168
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002169 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002170 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002171 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002172 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002173 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002174 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002175 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2176 (si_f->state >= SI_ST_EST) &&
2177 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002178 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002179 * attached to it. If any data are left in, we'll permit them to
2180 * move.
2181 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002182 channel_auto_read(req);
2183 channel_auto_connect(req);
2184 channel_auto_close(req);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002185 c_adv(req, ci_data(req));
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002186
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002187 /* We'll let data flow between the producer (if still connected)
2188 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002189 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002190 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002191 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002192
2193 /* Just in order to support fetching HTTP contents after start
2194 * of forwarding when the HTTP forwarding analyser is not used,
2195 * we simply reset msg->sov so that HTTP rewinding points to the
2196 * headers.
2197 */
Christopher Fauleted28da52018-10-31 13:43:33 +01002198 if (IS_HTX_STRM(s) && s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002199 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - co_data(req);
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002200 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002201
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002202 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002203 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2204 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002205 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002206 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2207 (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 +01002208 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002209 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2210 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002211 (req->flags & CF_STREAMER_FAST)))) {
2212 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002213 }
2214
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002215 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002216 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002217
2218 /*
2219 * Now forward all shutdown requests between both sides of the buffer
2220 */
2221
Willy Tarreau520d95e2009-09-19 21:04:57 +02002222 /* first, let's check if the request buffer needs to shutdown(write), which may
2223 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002224 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2225 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002226 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002227 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002228 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002229 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002230 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002231
2232 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002233 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2234 channel_is_empty(req))) {
2235 if (req->flags & CF_READ_ERROR)
2236 si_b->flags |= SI_FL_NOLINGER;
2237 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002238 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002239
2240 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002241 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2242 !req->analysers))
2243 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002244
2245 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002246 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2247 if (si_f->flags & SI_FL_NOHALF)
2248 si_f->flags |= SI_FL_NOLINGER;
2249 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002250 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002251
Willy Tarreau520d95e2009-09-19 21:04:57 +02002252 /* it's possible that an upper layer has requested a connection setup or abort.
2253 * There are 2 situations where we decide to establish a new connection :
2254 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002255 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002256 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002257 if (si_b->state == SI_ST_INI) {
2258 if (!(req->flags & CF_SHUTW)) {
2259 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002260 /* If we have an appctx, there is no connect method, so we
2261 * immediately switch to the connected state, otherwise we
2262 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002263 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002264 si_b->state = SI_ST_REQ; /* new connection requested */
2265 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002266 }
Willy Tarreau73201222009-08-16 18:27:24 +02002267 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002268 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002269 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002270 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2271 channel_shutw_now(req); /* fix buffer flags upon abort */
2272 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002273 }
Willy Tarreau92795622009-03-06 12:51:23 +01002274 }
2275
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002276
2277 /* we may have a pending connection request, or a connection waiting
2278 * for completion.
2279 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002280 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002281
2282 /* prune the request variables and swap to the response variables. */
2283 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreaucda7f3f2018-10-28 13:44:36 +01002284 if (!LIST_ISEMPTY(&s->vars_reqres.head)) {
2285 vars_prune(&s->vars_reqres, s->sess, s);
2286 vars_init(&s->vars_reqres, SCOPE_RES);
2287 }
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002288 }
2289
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002290 do {
2291 /* nb: step 1 might switch from QUE to ASS, but we first want
2292 * to give a chance to step 2 to perform a redirect if needed.
2293 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002294 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002295 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002296 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002297 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002298
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002299 /* applets directly go to the ESTABLISHED state. Similarly,
2300 * servers experience the same fate when their connection
2301 * is reused.
2302 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002303 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002304 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002305
Willy Tarreaub44c8732013-12-31 23:16:50 +01002306 /* Now we can add the server name to a header (if requested) */
2307 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002308 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002309 (s->be->server_id_hdr_name != NULL) &&
2310 (s->be->mode == PR_MODE_HTTP) &&
2311 objt_server(s->target)) {
Christopher Faulet27a3dc82018-10-23 15:34:07 +02002312 http_send_name_header(s, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002313 }
2314
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002315 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002316 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002317 http_perform_server_redirect(s, si_b);
2318 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002319 }
2320
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002321 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002322 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002323 goto resync_stream_interface;
2324
Willy Tarreau815a9b22010-07-27 17:15:12 +02002325 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002326 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002327 goto resync_request;
2328
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002329 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002330
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002331 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002332 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002333 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002334 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002335 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002336 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002337 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2338 (si_b->state >= SI_ST_EST) &&
2339 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002340 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002341 * attached to it. If any data are left in, we'll permit them to
2342 * move.
2343 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002344 channel_auto_read(res);
2345 channel_auto_close(res);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002346 c_adv(res, ci_data(res));
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002347
2348 /* We'll let data flow between the producer (if still connected)
2349 * to the consumer.
2350 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002351 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002352 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002353
Willy Tarreau42529c32015-07-09 18:38:57 +02002354 /* Just in order to support fetching HTTP contents after start
2355 * of forwarding when the HTTP forwarding analyser is not used,
2356 * we simply reset msg->sov so that HTTP rewinding points to the
2357 * headers.
2358 */
Christopher Fauleted28da52018-10-31 13:43:33 +01002359 if (IS_HTX_STRM(s) && s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002360 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - co_data(res);
Willy Tarreau42529c32015-07-09 18:38:57 +02002361
Willy Tarreauce887fd2012-05-12 12:50:00 +02002362 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002363 * tunnel timeout set, use it now. Note that we must respect
2364 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002365 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002366 if (!req->analysers && s->be->timeout.tunnel) {
2367 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002368 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002369
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002370 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2371 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002372 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2373 res->rto = s->be->timeout.serverfin;
2374 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2375 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002376 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2377 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002378
Willy Tarreau8f128b42014-11-28 15:07:47 +01002379 req->rex = tick_add(now_ms, req->rto);
2380 req->wex = tick_add(now_ms, req->wto);
2381 res->rex = tick_add(now_ms, res->rto);
2382 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002383 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002384 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002385
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002386 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002387 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2388 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002389 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002390 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2391 (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 +01002392 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002393 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2394 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002395 (res->flags & CF_STREAMER_FAST)))) {
2396 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002397 }
2398
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002399 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002400 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002401
2402 /*
2403 * Now forward all shutdown requests between both sides of the buffer
2404 */
2405
2406 /*
2407 * FIXME: this is probably where we should produce error responses.
2408 */
2409
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002410 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002411 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002412 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002413 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002414 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002415
2416 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002417 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2418 channel_is_empty(res))) {
2419 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002420 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002421
2422 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002423 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2424 !res->analysers)
2425 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002426
2427 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002428 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2429 if (si_b->flags & SI_FL_NOHALF)
2430 si_b->flags |= SI_FL_NOLINGER;
2431 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002432 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002433
Willy Tarreau8f128b42014-11-28 15:07:47 +01002434 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002435 goto resync_stream_interface;
2436
Willy Tarreau8f128b42014-11-28 15:07:47 +01002437 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002438 goto resync_request;
2439
Willy Tarreau8f128b42014-11-28 15:07:47 +01002440 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002441 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002442
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002443 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002444 si_f->flags &= ~SI_FL_DONT_WAKE;
2445 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002446
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002447 /* This is needed only when debugging is enabled, to indicate
2448 * client-side or server-side close. Please note that in the unlikely
2449 * event where both sides would close at once, the sequence is reported
2450 * on the server side first.
2451 */
2452 if (unlikely((global.mode & MODE_DEBUG) &&
2453 (!(global.mode & MODE_QUIET) ||
2454 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002455 if (si_b->state == SI_ST_CLO &&
2456 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002457 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002458 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002459 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2460 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002461 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002462 }
2463
Willy Tarreau8f128b42014-11-28 15:07:47 +01002464 if (si_f->state == SI_ST_CLO &&
2465 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002466 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002467 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002468 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2469 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002470 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002471 }
2472 }
2473
Willy Tarreau8f128b42014-11-28 15:07:47 +01002474 if (likely((si_f->state != SI_ST_CLO) ||
2475 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002476
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002477 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002478 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002479
Willy Tarreaud14844a2018-11-08 18:15:29 +01002480 si_update_both(si_f, si_b);
Olivier Houchard53216e72018-10-10 15:46:36 +02002481
Willy Tarreaubf89ff32018-11-09 14:59:25 +01002482 if (si_f->state == SI_ST_DIS || si_f->state != si_f->prev_state ||
2483 si_b->state == SI_ST_DIS || si_b->state != si_b->prev_state ||
Willy Tarreau85f89012018-10-25 11:06:57 +02002484 (((req->flags ^ rqf_last) | (res->flags ^ rpf_last)) & CF_MASK_ANALYSER))
Olivier Houchard53216e72018-10-10 15:46:36 +02002485 goto redo;
2486
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002487 /* Trick: if a request is being waiting for the server to respond,
2488 * and if we know the server can timeout, we don't want the timeout
2489 * to expire on the client side first, but we're still interested
2490 * in passing data from the client to the server (eg: POST). Thus,
2491 * we can cancel the client's request timeout if the server's
2492 * request timeout is set and the server has not yet sent a response.
2493 */
2494
Willy Tarreau8f128b42014-11-28 15:07:47 +01002495 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2496 (tick_isset(req->wex) || tick_isset(res->rex))) {
2497 req->flags |= CF_READ_NOEXP;
2498 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002499 }
2500
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002501 /* Reset pending events now */
2502 s->pending_events = 0;
2503
Willy Tarreau798f4322012-11-08 14:49:17 +01002504 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002505 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002506 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2507 tick_first(tick_first(req->rex, req->wex),
2508 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002509 if (!req->analysers)
2510 req->analyse_exp = TICK_ETERNITY;
2511
2512 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2513 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2514 req->analyse_exp = tick_add(now_ms, 5000);
2515
2516 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002517
Willy Tarreau9a398be2017-11-10 17:14:23 +01002518 t->expire = tick_first(t->expire, res->analyse_exp);
2519
Willy Tarreau8f128b42014-11-28 15:07:47 +01002520 if (si_f->exp)
2521 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002522
Willy Tarreau8f128b42014-11-28 15:07:47 +01002523 if (si_b->exp)
2524 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002525
Christopher Faulet56803b12017-11-24 16:06:18 +01002526 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002527 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2528 " 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 +01002529 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2530 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002531
2532#ifdef DEBUG_DEV
2533 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002534 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002535 ABORT_NOW();
2536#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002537 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002538 stream_release_buffers(s);
Olivier Houchardc2aa7112018-09-11 18:27:21 +02002539 /* We may have free'd some space in buffers, or have more to send/recv, try again */
Willy Tarreau26c25062009-03-08 09:38:41 +01002540 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002541 }
2542
Willy Tarreaue7dff022015-04-03 01:14:29 +02002543 if (s->flags & SF_BE_ASSIGNED)
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002544 HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002545
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002546 if (unlikely((global.mode & MODE_DEBUG) &&
2547 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002548 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002549 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002550 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2551 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002552 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002553 }
2554
2555 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002556 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002557
Willy Tarreaueee5b512015-04-03 23:46:31 +02002558 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002559 int n;
2560
Willy Tarreaueee5b512015-04-03 23:46:31 +02002561 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002562 if (n < 1 || n > 5)
2563 n = 0;
2564
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002565 if (sess->fe->mode == PR_MODE_HTTP) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002566 HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002567 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002568 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002569 (s->be->mode == PR_MODE_HTTP)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002570 HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2571 HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002572 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002573 }
2574
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002575 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002576 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002577 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002578 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreau66425e32018-07-25 06:55:12 +02002579 /* we may need to know the position in the queue */
2580 pendconn_free(s);
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002581 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002582 }
2583
Willy Tarreau87b09662015-04-03 00:22:06 +02002584 /* update time stats for this stream */
2585 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002586
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002587 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002588 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002589 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002590 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002591 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002592}
2593
Willy Tarreau87b09662015-04-03 00:22:06 +02002594/* Update the stream's backend and server time stats */
2595void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002596{
2597 int t_request;
2598 int t_queue;
2599 int t_connect;
2600 int t_data;
2601 int t_close;
2602 struct server *srv;
2603
2604 t_request = 0;
2605 t_queue = s->logs.t_queue;
2606 t_connect = s->logs.t_connect;
2607 t_close = s->logs.t_close;
2608 t_data = s->logs.t_data;
2609
2610 if (s->be->mode != PR_MODE_HTTP)
2611 t_data = t_connect;
2612
2613 if (t_connect < 0 || t_data < 0)
2614 return;
2615
2616 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2617 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2618
2619 t_data -= t_connect;
2620 t_connect -= t_queue;
2621 t_queue -= t_request;
2622
2623 srv = objt_server(s->target);
2624 if (srv) {
2625 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2626 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2627 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2628 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2629 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002630 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002631 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2632 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2633 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2634 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002635 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002636}
2637
Willy Tarreau7c669d72008-06-20 15:04:11 +02002638/*
2639 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002640 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002641 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002642 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002643 * server.
2644 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002645void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002646{
2647 if (sess->srv_conn == newsrv)
2648 return;
2649
2650 if (sess->srv_conn) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002651 HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002652 HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002653 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2654 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002655 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002656 }
2657
2658 if (newsrv) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002659 HA_ATOMIC_ADD(&newsrv->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002660 HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002661 if (newsrv->proxy->lbprm.server_take_conn)
2662 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002663 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002664 }
2665}
2666
Willy Tarreau84455332009-03-15 22:34:05 +01002667/* Handle server-side errors for default protocols. It is called whenever a a
2668 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002669 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002670 * them. It's installed as ->srv_error for the server-side stream_interface.
2671 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002672void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002673{
2674 int err_type = si->err_type;
2675 int err = 0, fin = 0;
2676
2677 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002678 err = SF_ERR_CLICL;
2679 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002680 }
2681 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002682 err = SF_ERR_CLICL;
2683 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002684 }
2685 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002686 err = SF_ERR_SRVTO;
2687 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002688 }
2689 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002690 err = SF_ERR_SRVCL;
2691 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002692 }
2693 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002694 err = SF_ERR_SRVTO;
2695 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002696 }
2697 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002698 err = SF_ERR_SRVCL;
2699 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002700 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002701 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002702 err = SF_ERR_RESOURCE;
2703 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002704 }
Willy Tarreau84455332009-03-15 22:34:05 +01002705 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002706 err = SF_ERR_INTERNAL;
2707 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002708 }
2709
Willy Tarreaue7dff022015-04-03 01:14:29 +02002710 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002711 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002712 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002713 s->flags |= fin;
2714}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002715
Willy Tarreaue7dff022015-04-03 01:14:29 +02002716/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002717void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002718{
Willy Tarreau87b09662015-04-03 00:22:06 +02002719 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002720 return;
2721
Willy Tarreau87b09662015-04-03 00:22:06 +02002722 channel_shutw_now(&stream->req);
2723 channel_shutr_now(&stream->res);
2724 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002725 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002726 stream->flags |= why;
2727 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002728}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002729
Willy Tarreau8b22a712010-06-18 17:46:06 +02002730/************************************************************************/
2731/* All supported ACL keywords must be declared here. */
2732/************************************************************************/
2733
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002734/* 0=OK, <0=Alert, >0=Warning */
2735static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2736 struct proxy *px, struct act_rule *rule,
2737 char **err)
2738{
2739 struct action_kw *kw;
2740
2741 /* Check if the service name exists. */
2742 if (*(args[*cur_arg]) == 0) {
2743 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002744 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002745 }
2746
2747 /* lookup for keyword corresponding to a service. */
2748 kw = action_lookup(&service_keywords, args[*cur_arg]);
2749 if (!kw) {
2750 memprintf(err, "'%s' unknown service name.", args[1]);
2751 return ACT_RET_PRS_ERR;
2752 }
2753 (*cur_arg)++;
2754
2755 /* executes specific rule parser. */
2756 rule->kw = kw;
2757 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2758 return ACT_RET_PRS_ERR;
2759
2760 /* Register processing function. */
2761 rule->action_ptr = process_use_service;
2762 rule->action = ACT_CUSTOM;
2763
2764 return ACT_RET_PRS_OK;
2765}
2766
2767void service_keywords_register(struct action_kw_list *kw_list)
2768{
2769 LIST_ADDQ(&service_keywords, &kw_list->list);
2770}
2771
William Lallemand4c5b4d52016-11-21 08:51:11 +01002772
2773/* This function dumps a complete stream state onto the stream interface's
2774 * read buffer. The stream has to be set in strm. It returns 0 if the output
2775 * buffer is full and it needs to be called again, otherwise non-zero. It is
2776 * designed to be called from stats_dump_strm_to_buffer() below.
2777 */
2778static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2779{
2780 struct appctx *appctx = __objt_appctx(si->end);
2781 struct tm tm;
2782 extern const char *monthname[12];
2783 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002784 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01002785 struct connection *conn;
2786 struct appctx *tmpctx;
2787
2788 chunk_reset(&trash);
2789
2790 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2791 /* stream changed, no need to go any further */
2792 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002793 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01002794 si_rx_room_blk(si);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002795 return 0;
2796 }
2797 appctx->ctx.sess.uid = 0;
2798 appctx->ctx.sess.section = 0;
2799 return 1;
2800 }
2801
2802 switch (appctx->ctx.sess.section) {
2803 case 0: /* main status of the stream */
2804 appctx->ctx.sess.uid = strm->uniq_id;
2805 appctx->ctx.sess.section = 1;
2806 /* fall through */
2807
2808 case 1:
2809 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2810 chunk_appendf(&trash,
2811 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2812 strm,
2813 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2814 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2815 strm->uniq_id,
2816 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2817
2818 conn = objt_conn(strm_orig(strm));
2819 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2820 case AF_INET:
2821 case AF_INET6:
2822 chunk_appendf(&trash, " source=%s:%d\n",
2823 pn, get_host_port(&conn->addr.from));
2824 break;
2825 case AF_UNIX:
2826 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2827 break;
2828 default:
2829 /* no more information to print right now */
2830 chunk_appendf(&trash, "\n");
2831 break;
2832 }
2833
2834 chunk_appendf(&trash,
2835 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2836 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2837
2838 chunk_appendf(&trash,
2839 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2840 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2841 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2842 strm_li(strm) ? strm_li(strm)->luid : 0);
2843
2844 if (conn)
2845 conn_get_to_addr(conn);
2846
2847 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2848 case AF_INET:
2849 case AF_INET6:
2850 chunk_appendf(&trash, " addr=%s:%d\n",
2851 pn, get_host_port(&conn->addr.to));
2852 break;
2853 case AF_UNIX:
2854 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2855 break;
2856 default:
2857 /* no more information to print right now */
2858 chunk_appendf(&trash, "\n");
2859 break;
2860 }
2861
2862 if (strm->be->cap & PR_CAP_BE)
2863 chunk_appendf(&trash,
2864 " backend=%s (id=%u mode=%s)",
2865 strm->be->id,
2866 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2867 else
2868 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2869
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002870 cs = objt_cs(strm->si[1].end);
2871 conn = cs_conn(cs);
2872
William Lallemand4c5b4d52016-11-21 08:51:11 +01002873 if (conn)
2874 conn_get_from_addr(conn);
2875
2876 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2877 case AF_INET:
2878 case AF_INET6:
2879 chunk_appendf(&trash, " addr=%s:%d\n",
2880 pn, get_host_port(&conn->addr.from));
2881 break;
2882 case AF_UNIX:
2883 chunk_appendf(&trash, " addr=unix\n");
2884 break;
2885 default:
2886 /* no more information to print right now */
2887 chunk_appendf(&trash, "\n");
2888 break;
2889 }
2890
2891 if (strm->be->cap & PR_CAP_BE)
2892 chunk_appendf(&trash,
2893 " server=%s (id=%u)",
2894 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2895 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2896 else
2897 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2898
2899 if (conn)
2900 conn_get_to_addr(conn);
2901
2902 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2903 case AF_INET:
2904 case AF_INET6:
2905 chunk_appendf(&trash, " addr=%s:%d\n",
2906 pn, get_host_port(&conn->addr.to));
2907 break;
2908 case AF_UNIX:
2909 chunk_appendf(&trash, " addr=unix\n");
2910 break;
2911 default:
2912 /* no more information to print right now */
2913 chunk_appendf(&trash, "\n");
2914 break;
2915 }
2916
2917 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002918 " task=%p (state=0x%02x nice=%d calls=%d exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002919 strm->task,
2920 strm->task->state,
2921 strm->task->nice, strm->task->calls,
2922 strm->task->expire ?
2923 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2924 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2925 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01002926 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01002927 task_in_rq(strm->task) ? ", running" : "");
2928
2929 chunk_appendf(&trash,
2930 " age=%s)\n",
2931 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2932
2933 if (strm->txn)
2934 chunk_appendf(&trash,
2935 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2936 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02002937 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 +01002938
2939 chunk_appendf(&trash,
2940 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2941 &strm->si[0],
2942 si_state_str(strm->si[0].state),
2943 strm->si[0].flags,
2944 obj_type_name(strm->si[0].end),
2945 obj_base_ptr(strm->si[0].end),
2946 strm->si[0].exp ?
2947 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2948 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2949 TICKS_TO_MS(1000)) : "<NEVER>",
2950 strm->si[0].err_type);
2951
2952 chunk_appendf(&trash,
2953 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2954 &strm->si[1],
2955 si_state_str(strm->si[1].state),
2956 strm->si[1].flags,
2957 obj_type_name(strm->si[1].end),
2958 obj_base_ptr(strm->si[1].end),
2959 strm->si[1].exp ?
2960 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2961 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2962 TICKS_TO_MS(1000)) : "<NEVER>",
2963 strm->si[1].err_type);
2964
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002965 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
2966 conn = cs->conn;
2967
William Lallemand4c5b4d52016-11-21 08:51:11 +01002968 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002969 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002970 conn,
2971 conn_get_ctrl_name(conn),
2972 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002973 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002974 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002975 obj_type_name(conn->target),
2976 obj_base_ptr(conn->target));
2977
2978 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002979 " 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 +01002980 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002981 conn->handle.fd,
2982 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002983 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002984 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002985 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002986 }
2987 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2988 chunk_appendf(&trash,
Willy Tarreau9efd7452018-05-31 14:48:54 +02002989 " app0=%p st0=%d st1=%d st2=%d applet=%s tmask=0x%lx nice=%d calls=%u cpu=%llu lat=%llu\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002990 tmpctx,
2991 tmpctx->st0,
2992 tmpctx->st1,
2993 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002994 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002995 tmpctx->thread_mask,
Willy Tarreau9efd7452018-05-31 14:48:54 +02002996 tmpctx->t->nice, tmpctx->t->calls,
2997 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002998 }
2999
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003000 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
3001 conn = cs->conn;
3002
William Lallemand4c5b4d52016-11-21 08:51:11 +01003003 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003004 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003005 conn,
3006 conn_get_ctrl_name(conn),
3007 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003008 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003009 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003010 obj_type_name(conn->target),
3011 obj_base_ptr(conn->target));
3012
3013 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01003014 " 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 +01003015 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003016 conn->handle.fd,
3017 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01003018 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003019 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003020 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003021 }
3022 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
3023 chunk_appendf(&trash,
Willy Tarreau9efd7452018-05-31 14:48:54 +02003024 " app1=%p st0=%d st1=%d st2=%d applet=%s tmask=0x%lx, nice=%d, calls=%u, cpu=%llu, lat=%llu\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003025 tmpctx,
3026 tmpctx->st0,
3027 tmpctx->st1,
3028 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003029 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003030 tmpctx->thread_mask,
Willy Tarreau9efd7452018-05-31 14:48:54 +02003031 tmpctx->t->nice, tmpctx->t->calls,
3032 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003033 }
3034
3035 chunk_appendf(&trash,
3036 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3037 " an_exp=%s",
3038 &strm->req,
3039 strm->req.flags, strm->req.analysers,
3040 strm->req.pipe ? strm->req.pipe->data : 0,
3041 strm->req.to_forward, strm->req.total,
3042 strm->req.analyse_exp ?
3043 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
3044 TICKS_TO_MS(1000)) : "<NEVER>");
3045
3046 chunk_appendf(&trash,
3047 " rex=%s",
3048 strm->req.rex ?
3049 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
3050 TICKS_TO_MS(1000)) : "<NEVER>");
3051
3052 chunk_appendf(&trash,
3053 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003054 " buf=%p data=%p o=%u p=%u req.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003055 strm->req.wex ?
3056 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
3057 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003058 &strm->req.buf,
3059 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003060 (unsigned int)ci_head_ofs(&strm->req),
Willy Tarreau591d4452018-06-15 17:21:00 +02003061 strm->txn ? strm->txn->req.next : 0, (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003062 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003063
3064 chunk_appendf(&trash,
3065 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3066 " an_exp=%s",
3067 &strm->res,
3068 strm->res.flags, strm->res.analysers,
3069 strm->res.pipe ? strm->res.pipe->data : 0,
3070 strm->res.to_forward, strm->res.total,
3071 strm->res.analyse_exp ?
3072 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
3073 TICKS_TO_MS(1000)) : "<NEVER>");
3074
3075 chunk_appendf(&trash,
3076 " rex=%s",
3077 strm->res.rex ?
3078 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3079 TICKS_TO_MS(1000)) : "<NEVER>");
3080
3081 chunk_appendf(&trash,
3082 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003083 " buf=%p data=%p o=%u p=%u rsp.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003084 strm->res.wex ?
3085 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3086 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003087 &strm->res.buf,
3088 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003089 (unsigned int)ci_head_ofs(&strm->res),
Willy Tarreau591d4452018-06-15 17:21:00 +02003090 strm->txn ? strm->txn->rsp.next : 0, (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003091 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003092
Willy Tarreau06d80a92017-10-19 14:32:15 +02003093 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01003094 si_rx_room_blk(si);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003095 return 0;
3096 }
3097
3098 /* use other states to dump the contents */
3099 }
3100 /* end of dump */
3101 appctx->ctx.sess.uid = 0;
3102 appctx->ctx.sess.section = 0;
3103 return 1;
3104}
3105
3106
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003107static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003108{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003109 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3110 return 1;
3111
3112 if (*args[2] && strcmp(args[2], "all") == 0)
3113 appctx->ctx.sess.target = (void *)-1;
3114 else if (*args[2])
3115 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3116 else
3117 appctx->ctx.sess.target = NULL;
3118 appctx->ctx.sess.section = 0; /* start with stream status */
3119 appctx->ctx.sess.pos = 0;
3120
3121 return 0;
3122}
3123
3124/* This function dumps all streams' states onto the stream interface's
3125 * read buffer. It returns 0 if the output buffer is full and it needs
3126 * to be called again, otherwise non-zero. It is designed to be called
3127 * from stats_dump_sess_to_buffer() below.
3128 */
3129static int cli_io_handler_dump_sess(struct appctx *appctx)
3130{
3131 struct stream_interface *si = appctx->owner;
3132 struct connection *conn;
3133
3134 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3135 /* If we're forced to shut down, we might have to remove our
3136 * reference to the last stream being dumped.
3137 */
3138 if (appctx->st2 == STAT_ST_LIST) {
3139 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3140 LIST_DEL(&appctx->ctx.sess.bref.users);
3141 LIST_INIT(&appctx->ctx.sess.bref.users);
3142 }
3143 }
3144 return 1;
3145 }
3146
3147 chunk_reset(&trash);
3148
3149 switch (appctx->st2) {
3150 case STAT_ST_INIT:
3151 /* the function had not been called yet, let's prepare the
3152 * buffer for a response. We initialize the current stream
3153 * pointer to the first in the global list. When a target
3154 * stream is being destroyed, it is responsible for updating
3155 * this pointer. We know we have reached the end when this
3156 * pointer points back to the head of the streams list.
3157 */
3158 LIST_INIT(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003159 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003160 appctx->ctx.sess.bref.ref = streams.n;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003161 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003162 appctx->st2 = STAT_ST_LIST;
3163 /* fall through */
3164
3165 case STAT_ST_LIST:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003166 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003167 /* first, let's detach the back-ref from a possible previous stream */
3168 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3169 LIST_DEL(&appctx->ctx.sess.bref.users);
3170 LIST_INIT(&appctx->ctx.sess.bref.users);
3171 }
3172
3173 /* and start from where we stopped */
3174 while (appctx->ctx.sess.bref.ref != &streams) {
3175 char pn[INET6_ADDRSTRLEN];
3176 struct stream *curr_strm;
3177
3178 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3179
3180 if (appctx->ctx.sess.target) {
3181 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3182 goto next_sess;
3183
3184 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3185 /* call the proper dump() function and return if we're missing space */
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003186 if (!stats_dump_full_strm_to_buffer(si, curr_strm)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003187 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003188 return 0;
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003189 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003190
3191 /* stream dump complete */
3192 LIST_DEL(&appctx->ctx.sess.bref.users);
3193 LIST_INIT(&appctx->ctx.sess.bref.users);
3194 if (appctx->ctx.sess.target != (void *)-1) {
3195 appctx->ctx.sess.target = NULL;
3196 break;
3197 }
3198 else
3199 goto next_sess;
3200 }
3201
3202 chunk_appendf(&trash,
3203 "%p: proto=%s",
3204 curr_strm,
3205 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3206
3207 conn = objt_conn(strm_orig(curr_strm));
3208 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3209 case AF_INET:
3210 case AF_INET6:
3211 chunk_appendf(&trash,
3212 " src=%s:%d fe=%s be=%s srv=%s",
3213 pn,
3214 get_host_port(&conn->addr.from),
3215 strm_fe(curr_strm)->id,
3216 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3217 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3218 );
3219 break;
3220 case AF_UNIX:
3221 chunk_appendf(&trash,
3222 " src=unix:%d fe=%s be=%s srv=%s",
3223 strm_li(curr_strm)->luid,
3224 strm_fe(curr_strm)->id,
3225 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3226 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3227 );
3228 break;
3229 }
3230
3231 chunk_appendf(&trash,
Willy Tarreau9efd7452018-05-31 14:48:54 +02003232 " ts=%02x age=%s calls=%d cpu=%llu lat=%llu",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003233 curr_strm->task->state,
3234 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003235 curr_strm->task->calls,
3236 (unsigned long long)curr_strm->task->cpu_time, (unsigned long long)curr_strm->task->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003237
3238 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003239 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003240 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003241 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003242 curr_strm->req.analysers,
3243 curr_strm->req.rex ?
3244 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3245 TICKS_TO_MS(1000)) : "");
3246
3247 chunk_appendf(&trash,
3248 ",wx=%s",
3249 curr_strm->req.wex ?
3250 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3251 TICKS_TO_MS(1000)) : "");
3252
3253 chunk_appendf(&trash,
3254 ",ax=%s]",
3255 curr_strm->req.analyse_exp ?
3256 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3257 TICKS_TO_MS(1000)) : "");
3258
3259 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003260 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003261 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003262 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003263 curr_strm->res.analysers,
3264 curr_strm->res.rex ?
3265 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3266 TICKS_TO_MS(1000)) : "");
3267
3268 chunk_appendf(&trash,
3269 ",wx=%s",
3270 curr_strm->res.wex ?
3271 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3272 TICKS_TO_MS(1000)) : "");
3273
3274 chunk_appendf(&trash,
3275 ",ax=%s]",
3276 curr_strm->res.analyse_exp ?
3277 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3278 TICKS_TO_MS(1000)) : "");
3279
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003280 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003281 chunk_appendf(&trash,
3282 " s0=[%d,%1xh,fd=%d,ex=%s]",
3283 curr_strm->si[0].state,
3284 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003285 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003286 curr_strm->si[0].exp ?
3287 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3288 TICKS_TO_MS(1000)) : "");
3289
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003290 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003291 chunk_appendf(&trash,
3292 " s1=[%d,%1xh,fd=%d,ex=%s]",
3293 curr_strm->si[1].state,
3294 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003295 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003296 curr_strm->si[1].exp ?
3297 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3298 TICKS_TO_MS(1000)) : "");
3299
3300 chunk_appendf(&trash,
3301 " exp=%s",
3302 curr_strm->task->expire ?
3303 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3304 TICKS_TO_MS(1000)) : "");
3305 if (task_in_rq(curr_strm->task))
3306 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3307
3308 chunk_appendf(&trash, "\n");
3309
Willy Tarreau06d80a92017-10-19 14:32:15 +02003310 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003311 /* let's try again later from this stream. We add ourselves into
3312 * this stream's users so that it can remove us upon termination.
3313 */
Willy Tarreaudb398432018-11-15 11:08:52 +01003314 si_rx_room_blk(si);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003315 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003316 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003317 return 0;
3318 }
3319
3320 next_sess:
3321 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3322 }
3323
3324 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3325 /* specified stream not found */
3326 if (appctx->ctx.sess.section > 0)
3327 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3328 else
3329 chunk_appendf(&trash, "Session not found.\n");
3330
Willy Tarreau06d80a92017-10-19 14:32:15 +02003331 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01003332 si_rx_room_blk(si);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003333 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003334 return 0;
3335 }
3336
3337 appctx->ctx.sess.target = NULL;
3338 appctx->ctx.sess.uid = 0;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003339 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003340 return 1;
3341 }
3342
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003343 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003344 /* fall through */
3345
3346 default:
3347 appctx->st2 = STAT_ST_FIN;
3348 return 1;
3349 }
3350}
3351
3352static void cli_release_show_sess(struct appctx *appctx)
3353{
3354 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003355 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003356 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3357 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003358 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003359 }
3360}
3361
Willy Tarreau61b65212016-11-24 11:09:25 +01003362/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003363static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003364{
3365 struct stream *strm, *ptr;
3366
3367 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3368 return 1;
3369
3370 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003371 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003372 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003373 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003374 return 1;
3375 }
3376
3377 ptr = (void *)strtoul(args[2], NULL, 0);
3378
3379 /* first, look for the requested stream in the stream table */
3380 list_for_each_entry(strm, &streams, list) {
3381 if (strm == ptr)
3382 break;
3383 }
3384
3385 /* do we have the stream ? */
3386 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003387 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003388 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003389 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003390 return 1;
3391 }
3392
3393 stream_shutdown(strm, SF_ERR_KILLED);
3394 return 1;
3395}
3396
Willy Tarreau4e46b622016-11-23 16:50:48 +01003397/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003398static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003399{
3400 struct server *sv;
3401 struct stream *strm, *strm_bck;
3402
3403 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3404 return 1;
3405
3406 sv = cli_find_server(appctx, args[3]);
3407 if (!sv)
3408 return 1;
3409
3410 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003411 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003412 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3413 if (strm->srv_conn == sv)
3414 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003415 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003416 return 1;
3417}
3418
William Lallemand4c5b4d52016-11-21 08:51:11 +01003419/* register cli keywords */
3420static struct cli_kw_list cli_kws = {{ },{
3421 { { "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 +01003422 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003423 { { "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 +01003424 {{},}
3425}};
3426
Willy Tarreau0108d902018-11-25 19:14:37 +01003427INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
3428
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003429/* main configuration keyword registration. */
3430static struct action_kw_list stream_tcp_keywords = { ILH, {
3431 { "use-service", stream_parse_use_service },
3432 { /* END */ }
3433}};
3434
Willy Tarreau0108d902018-11-25 19:14:37 +01003435INITCALL1(STG_REGISTER, tcp_req_cont_keywords_register, &stream_tcp_keywords);
3436
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003437static struct action_kw_list stream_http_keywords = { ILH, {
3438 { "use-service", stream_parse_use_service },
3439 { /* END */ }
3440}};
3441
Willy Tarreau0108d902018-11-25 19:14:37 +01003442INITCALL1(STG_REGISTER, http_req_keywords_register, &stream_http_keywords);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003443
Willy Tarreaubaaee002006-06-26 02:48:02 +02003444/*
3445 * Local variables:
3446 * c-indent-level: 8
3447 * c-basic-offset: 8
3448 * End:
3449 */