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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
Willy Tarreau87b09662015-04-03 00:22:06 +02002 * Stream management functions.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003 *
Willy Tarreaud28c3532012-04-19 19:28:33 +02004 * Copyright 2000-2012 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <stdlib.h>
Willy Tarreau81f9aa32010-06-01 17:45:26 +020014#include <unistd.h>
15#include <fcntl.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020016
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020017#include <common/cfgparse.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020018#include <common/config.h>
Willy Tarreau9b28e032012-10-12 23:49:43 +020019#include <common/buffer.h>
Willy Tarreau7c669d72008-06-20 15:04:11 +020020#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020021#include <common/memory.h>
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +020022#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020023
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020024#include <types/applet.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020025#include <types/capture.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010026#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020027#include <types/filters.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010028#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010029#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020030
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020031#include <proto/acl.h>
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020032#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020033#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010034#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020035#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010036#include <proto/checks.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010037#include <proto/cli.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020038#include <proto/connection.h>
William Lallemand9ed62032016-11-21 17:49:11 +010039#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020040#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020041#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020042#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020043#include <proto/frontend.h>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010044#include <proto/hdr_idx.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010045#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +020046#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020047#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020048#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020049#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020050#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020051#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010052#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010053#include <proto/proto_http.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020054#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020055#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010056#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020057#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010058#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010059#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010060#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010061#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020062#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020063
Willy Tarreaubafbe012017-11-24 17:34:44 +010064struct pool_head *pool_head_stream;
Willy Tarreau87b09662015-04-03 00:22:06 +020065struct list streams;
Christopher Faulet9dcf9b62017-11-13 10:34:01 +010066__decl_hathreads(HA_SPINLOCK_T streams_lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +020067
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020068/* List of all use-service keywords. */
69static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
70
Willy Tarreau5790eb02017-08-28 17:18:36 +020071
72/* Create a new stream for connection <conn>. Return < 0 on error. This is only
73 * valid right after the handshake, before the connection's data layer is
74 * initialized, because it relies on the session to be in conn->owner.
75 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +020076int stream_create_from_cs(struct conn_stream *cs)
Willy Tarreau5790eb02017-08-28 17:18:36 +020077{
78 struct stream *strm;
79
Olivier Houchard9aaf7782017-09-13 18:30:23 +020080 strm = stream_new(cs->conn->owner, &cs->obj_type);
Willy Tarreau5790eb02017-08-28 17:18:36 +020081 if (strm == NULL)
82 return -1;
83
84 task_wakeup(strm->task, TASK_WOKEN_INIT);
85 return 0;
86}
87
Willy Tarreaub882dd82018-11-06 15:50:21 +010088/* Callback used to wake up a stream when an input buffer is available. The
89 * stream <s>'s stream interfaces are checked for a failed buffer allocation
Willy Tarreaud0f5bbc2018-11-14 11:10:26 +010090 * as indicated by the presence of the SI_FL_RXBLK_ROOM flag and the lack of a
Willy Tarreaub882dd82018-11-06 15:50:21 +010091 * buffer, and and input buffer is assigned there (at most one). The function
92 * returns 1 and wakes the stream up if a buffer was taken, otherwise zero.
93 * It's designed to be called from __offer_buffer().
94 */
95int stream_buf_available(void *arg)
96{
97 struct stream *s = arg;
98
Willy Tarreau8be7cd72018-11-14 15:12:08 +010099 if (!s->req.buf.size && !s->req.pipe && (s->si[0].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100100 b_alloc_margin(&s->req.buf, global.tune.reserved_bufs))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100101 si_rx_buff_rdy(&s->si[0]);
102 else if (!s->res.buf.size && !s->res.pipe && (s->si[1].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100103 b_alloc_margin(&s->res.buf, 0))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100104 si_rx_buff_rdy(&s->si[1]);
Willy Tarreaub882dd82018-11-06 15:50:21 +0100105 else
106 return 0;
107
108 task_wakeup(s->task, TASK_WOKEN_RES);
109 return 1;
110
111}
112
Willy Tarreau9903f0e2015-04-04 18:50:31 +0200113/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200114 * handshake, in order to complete initialization of a valid stream. It must be
Joseph Herlant4cc8d0d2018-11-15 09:14:14 -0800115 * called with a completely initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200116 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +0200117 * end point is assigned to <origin>, which must be valid. The stream's task
118 * is configured with a nice value inherited from the listener's nice if any.
119 * The task's context is set to the new stream, and its function is set to
120 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +0200121 */
Willy Tarreau87787ac2017-08-28 16:22:54 +0200122struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +0200123{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200124 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200125 struct task *t;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200126 struct conn_stream *cs = objt_cs(origin);
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200127 struct appctx *appctx = objt_appctx(origin);
Willy Tarreau2542b532012-08-31 16:01:23 +0200128
Willy Tarreaubafbe012017-11-24 17:34:44 +0100129 if (unlikely((s = pool_alloc(pool_head_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200130 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200131
132 /* minimum stream initialization required for an embryonic stream is
133 * fairly low. We need very little to execute L4 ACLs, then we need a
134 * task to make the client-side connection live on its own.
135 * - flags
136 * - stick-entry tracking
137 */
138 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200139 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200140 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200141 s->logs.accept_date = sess->accept_date; /* user-visible date for logging */
142 s->logs.tv_accept = sess->tv_accept; /* corrected date for internal use */
Willy Tarreau590a0512018-09-05 11:56:48 +0200143 s->logs.t_handshake = sess->t_handshake;
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200144 s->logs.t_idle = -1;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200145 tv_zero(&s->logs.tv_request);
146 s->logs.t_queue = -1;
147 s->logs.t_connect = -1;
148 s->logs.t_data = -1;
149 s->logs.t_close = 0;
150 s->logs.bytes_in = s->logs.bytes_out = 0;
Patrick Hemmerffe5e8c2018-05-11 12:52:31 -0400151 s->logs.prx_queue_pos = 0; /* we get the number of pending conns before us */
152 s->logs.srv_queue_pos = 0; /* we will get this number soon */
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200153
154 /* default logging function */
155 s->do_log = strm_log;
156
157 /* default error reporting function, may be changed by analysers */
158 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200159
160 /* Initialise the current rule list pointer to NULL. We are sure that
161 * any rulelist match the NULL pointer.
162 */
163 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200164 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200165
Willy Tarreaua68f7622015-09-21 17:48:24 +0200166 /* Copy SC counters for the stream. We don't touch refcounts because
167 * any reference we have is inherited from the session. Since the stream
168 * doesn't exist without the session, the session's existence guarantees
169 * we don't lose the entry. During the store operation, the stream won't
170 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200171 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200172 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200173
174 s->sess = sess;
175 s->si[0].flags = SI_FL_NONE;
176 s->si[1].flags = SI_FL_ISBACK;
177
Willy Tarreau90a7c032018-09-05 16:21:29 +0200178 s->uniq_id = HA_ATOMIC_XADD(&global.req_count, 1);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200179
Willy Tarreau87b09662015-04-03 00:22:06 +0200180 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200181 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100182
183 LIST_INIT(&s->buffer_wait.list);
184 s->buffer_wait.target = s;
Willy Tarreaub882dd82018-11-06 15:50:21 +0100185 s->buffer_wait.wakeup_cb = stream_buf_available;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200186
Willy Tarreaue7dff022015-04-03 01:14:29 +0200187 s->flags |= SF_INITIALIZED;
William Lallemandcf62f7e2018-10-26 14:47:40 +0200188 s->pcli_next_pid = 0;
Willy Tarreau2542b532012-08-31 16:01:23 +0200189 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200190
Emeric Brunc60def82017-09-27 14:59:38 +0200191 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200192 goto out_fail_alloc;
193
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200194 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100195 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200196 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200197 t->context = s;
198 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200199 if (sess->listener)
200 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200201
Willy Tarreau87b09662015-04-03 00:22:06 +0200202 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200203 * This changes later when switching rules are executed or
204 * when the default backend is assigned.
205 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200206 s->be = sess->fe;
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200207 s->req.buf = BUF_NULL;
208 s->res.buf = BUF_NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200209 s->req_cap = NULL;
210 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200211
Willy Tarreauebcd4842015-06-19 11:59:02 +0200212 /* Initialise all the variables contexts even if not used.
213 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200214 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200215 vars_init(&s->vars_txn, SCOPE_TXN);
216 vars_init(&s->vars_reqres, SCOPE_REQ);
217
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200218 /* this part should be common with other protocols */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200219 if (si_reset(&s->si[0]) < 0)
220 goto out_fail_alloc;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200221 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100222 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200223
Willy Tarreau984fca92017-12-20 16:31:43 +0100224 if (cs && cs->conn->mux && cs->conn->mux->flags & MX_FL_CLEAN_ABRT)
225 s->si[0].flags |= SI_FL_CLEAN_ABRT;
226
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200227 /* attach the incoming connection to the stream interface now. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200228 if (cs)
229 si_attach_cs(&s->si[0], cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200230 else if (appctx)
231 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200232
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200233 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200234 s->si[0].flags |= SI_FL_INDEP_STR;
235
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200236 /* pre-initialize the other side's stream interface to an INIT state. The
237 * callbacks will be initialized before attempting to connect.
238 */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200239 if (si_reset(&s->si[1]) < 0)
240 goto out_fail_alloc_si1;
Hongbo Longe39683c2017-03-10 18:41:51 +0100241 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200242
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200243 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200244 s->si[1].flags |= SI_FL_INDEP_STR;
245
Willy Tarreau87b09662015-04-03 00:22:06 +0200246 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100247 s->target = sess->listener ? sess->listener->default_target : NULL;
248
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200249 s->pend_pos = NULL;
Patrick Hemmer268a7072018-05-11 12:52:31 -0400250 s->priority_class = 0;
251 s->priority_offset = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200252
253 /* init store persistence */
254 s->store_count = 0;
255
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100256 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100257 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100258 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaue223e3b2017-11-18 15:39:10 +0100259
260 if (!sess->fe->fe_req_ana) {
261 channel_auto_connect(&s->req); /* don't wait to establish connection */
262 channel_auto_close(&s->req); /* let the producer forward close requests */
263 }
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200264
265 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100266 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100267 s->req.rex = TICK_ETERNITY;
268 s->req.wex = TICK_ETERNITY;
269 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200270
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100271 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100272 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100273 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200274
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200275 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100276 s->req.flags |= CF_NEVER_WAIT;
277 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200278 }
279
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200280 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100281 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100282 s->res.rex = TICK_ETERNITY;
283 s->res.wex = TICK_ETERNITY;
284 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200285
Willy Tarreaueee5b512015-04-03 23:46:31 +0200286 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100287 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100288
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100289 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200290 LIST_ADDQ(&streams, &s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100291 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200292
Christopher Faulet92d36382015-11-05 13:35:03 +0100293 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200294 goto out_fail_accept;
295
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200296 /* finish initialization of the accepted file descriptor */
Olivier Houchard53216e72018-10-10 15:46:36 +0200297 if (appctx)
Willy Tarreau0cd3bd62018-11-06 18:46:37 +0100298 si_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200299
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200300 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200301 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200302
303 /* it is important not to call the wakeup function directly but to
304 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200305 * priorities to tasks. Using multi thread we must be sure that
306 * stream is fully initialized before calling task_wakeup. So
307 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200308 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200309 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200310
311 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200312 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100313 flt_stream_release(s, 0);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200314 task_free(t);
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200315 tasklet_free(s->si[1].wait_event.task);
Willy Tarreaue5f229e2018-10-15 11:08:55 +0200316 LIST_DEL(&s->list);
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200317out_fail_alloc_si1:
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200318 tasklet_free(s->si[0].wait_event.task);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200319 out_fail_alloc:
Willy Tarreaubafbe012017-11-24 17:34:44 +0100320 pool_free(pool_head_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200321 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200322}
323
Willy Tarreaubaaee002006-06-26 02:48:02 +0200324/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200325 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200326 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200327static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200328{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200329 struct session *sess = strm_sess(s);
330 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100331 struct bref *bref, *back;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200332 struct conn_stream *cli_cs = objt_cs(s->si[0].end);
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100333 int must_free_sess;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200334 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100335
Willy Tarreaud0ad4a82018-07-25 11:13:53 +0200336 pendconn_free(s);
Willy Tarreau922a8062008-12-04 09:33:58 +0100337
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100338 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200339 if (s->flags & SF_CURR_SESS) {
340 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200341 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau1e62de62008-11-11 20:20:02 +0100342 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100343 if (may_dequeue_tasks(objt_server(s->target), s->be))
344 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100345 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100346
Willy Tarreau7c669d72008-06-20 15:04:11 +0200347 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200348 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200349 * it should normally be only the same as the one above,
350 * so this should not happen in fact.
351 */
352 sess_change_server(s, NULL);
353 }
354
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100355 if (s->req.pipe)
356 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100357
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100358 if (s->res.pipe)
359 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100360
Willy Tarreaubf883e02014-11-25 21:10:35 +0100361 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100362 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100363 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100364 LIST_DEL(&s->buffer_wait.list);
365 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100366 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100367 }
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200368 if (s->req.buf.size || s->res.buf.size) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100369 b_drop(&s->req.buf);
370 b_drop(&s->res.buf);
Olivier Houchard673867c2018-05-25 16:58:52 +0200371 offer_buffers(NULL, tasks_run_queue);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100372 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200373
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100374 hlua_ctx_destroy(s->hlua);
375 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200376 if (s->txn)
377 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100378
Willy Tarreau1e954912012-10-12 17:50:05 +0200379 /* ensure the client-side transport layer is destroyed */
Willy Tarreau32560732017-10-08 11:33:44 +0200380 if (cli_cs)
381 cs_close(cli_cs);
Willy Tarreau1e954912012-10-12 17:50:05 +0200382
Willy Tarreaua4cda672010-06-06 18:28:49 +0200383 for (i = 0; i < s->store_count; i++) {
384 if (!s->store[i].ts)
385 continue;
386 stksess_free(s->store[i].table, s->store[i].ts);
387 s->store[i].ts = NULL;
388 }
389
Willy Tarreaueee5b512015-04-03 23:46:31 +0200390 if (s->txn) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100391 pool_free(pool_head_hdr_idx, s->txn->hdr_idx.v);
392 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200393 s->txn = NULL;
394 }
395
Christopher Fauletd7c91962015-04-30 11:48:27 +0200396 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100397 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200398
Willy Tarreau92fb9832007-10-16 17:34:28 +0200399 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100400 pool_free(fe->rsp_cap_pool, s->res_cap);
401 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200402 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100403
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200404 /* Cleanup all variable contexts. */
Willy Tarreaucda7f3f2018-10-28 13:44:36 +0100405 if (!LIST_ISEMPTY(&s->vars_txn.head))
406 vars_prune(&s->vars_txn, s->sess, s);
407 if (!LIST_ISEMPTY(&s->vars_reqres.head))
408 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200409
Willy Tarreau87b09662015-04-03 00:22:06 +0200410 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200411
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100412 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100413 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100414 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200415 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100416 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100417 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100418 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200419 if (s->list.n != &streams)
420 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100421 bref->ref = s->list.n;
422 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100423 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100424 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200425
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100426 /* applets do not release session yet */
427 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
428
Olivier Houchard4fdec7a2018-10-11 17:09:14 +0200429
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200430 si_release_endpoint(&s->si[1]);
431 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200432
Olivier Houchardd7bd3e32018-10-18 16:22:02 +0200433 tasklet_free(s->si[0].wait_event.task);
434 tasklet_free(s->si[1].wait_event.task);
435
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100436 if (must_free_sess)
437 session_free(sess);
438
Willy Tarreaubafbe012017-11-24 17:34:44 +0100439 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200440
441 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200442 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100443 pool_flush(pool_head_buffer);
444 pool_flush(pool_head_http_txn);
445 pool_flush(pool_head_hdr_idx);
446 pool_flush(pool_head_requri);
447 pool_flush(pool_head_capture);
448 pool_flush(pool_head_stream);
449 pool_flush(pool_head_session);
450 pool_flush(pool_head_connection);
451 pool_flush(pool_head_pendconn);
452 pool_flush(fe->req_cap_pool);
453 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200454 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200455}
456
Willy Tarreau656859d2014-11-25 19:46:36 +0100457
Willy Tarreau87b09662015-04-03 00:22:06 +0200458/* Allocates a work buffer for stream <s>. It is meant to be called inside
459 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200460 * to work fine, which is the response buffer so that an error message may be
461 * built and returned. Response buffers may be allocated from the reserve, this
462 * is critical to ensure that a response may always flow and will never block a
463 * server from releasing a connection. Returns 0 in case of failure, non-zero
464 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100465 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100466static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100467{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100468 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100469 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100470 LIST_DEL(&s->buffer_wait.list);
471 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100472 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100473 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100474
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200475 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100476 return 1;
477
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100478 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100479 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100480 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100481 return 0;
482}
483
484/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100485 * update() functions. It will try to wake up as many tasks/applets as the
486 * number of buffers that it releases. In practice, most often streams are
487 * blocked on a single buffer, so it makes sense to try to wake two up when two
488 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100489 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200490void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100491{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100492 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100493
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200494 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100495 offer = 1;
496 b_free(&s->req.buf);
497 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200498 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100499 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100500 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100501 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100502
Willy Tarreaubf883e02014-11-25 21:10:35 +0100503 /* if we're certain to have at least 1 buffer available, and there is
504 * someone waiting, we can wake up a waiter and offer them.
505 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100506 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200507 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100508}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200509
510/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200511int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200512{
Willy Tarreau87b09662015-04-03 00:22:06 +0200513 LIST_INIT(&streams);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100514 HA_SPIN_INIT(&streams_lock);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100515 pool_head_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
516 return pool_head_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200517}
518
Willy Tarreau87b09662015-04-03 00:22:06 +0200519void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100520{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200521 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100522 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200523 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200524 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100525 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100526
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100527 bytes = s->req.total - s->logs.bytes_in;
528 s->logs.bytes_in = s->req.total;
529 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200530 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
531 HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100532
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100533 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200534 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200535
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200536 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200537 HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200538
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100539 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200540 struct stkctr *stkctr = &s->stkctr[i];
541
Emeric Brun819fc6f2017-06-13 19:37:32 +0200542 ts = stkctr_entry(stkctr);
543 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200544 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200545 ts = stkctr_entry(stkctr);
546 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200547 continue;
548 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200549
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100550 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200551 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200552 if (ptr1)
553 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200554
Emeric Brun819fc6f2017-06-13 19:37:32 +0200555 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200556 if (ptr2)
557 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200558 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100559 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200560
561 /* If data was modified, we need to touch to re-schedule sync */
562 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200563 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100564 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100565 }
566
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100567 bytes = s->res.total - s->logs.bytes_out;
568 s->logs.bytes_out = s->res.total;
569 if (bytes) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200570 HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
571 HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100572
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100573 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200574 HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200575
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200576 if (sess->listener && sess->listener->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +0200577 HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200578
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100579 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200580 struct stkctr *stkctr = &s->stkctr[i];
581
Emeric Brun819fc6f2017-06-13 19:37:32 +0200582 ts = stkctr_entry(stkctr);
583 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200584 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200585 ts = stkctr_entry(stkctr);
586 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200587 continue;
588 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200589
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100590 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200591 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200592 if (ptr1)
593 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200594
Emeric Brun819fc6f2017-06-13 19:37:32 +0200595 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200596 if (ptr2)
597 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200598 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100599 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200600
601 /* If data was modified, we need to touch to re-schedule sync */
602 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200603 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100604 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100605 }
606}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200607
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100608/* This function is called with (si->state == SI_ST_CON) meaning that a
609 * connection was attempted and that the file descriptor is already allocated.
610 * We must check for establishment, error and abort. Possible output states
611 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
612 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200613 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100614 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200615static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100616{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100617 struct stream_interface *si = &s->si[1];
618 struct channel *req = &s->req;
619 struct channel *rep = &s->res;
Willy Tarreaua553ae92017-10-05 18:52:17 +0200620 struct conn_stream *srv_cs = __objt_cs(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100621
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100622 /* If we got an error, or if nothing happened and the connection timed
623 * out, we must give up. The CER state handler will take care of retry
624 * attempts and error reports.
625 */
626 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800627 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100628 /* Some data were sent past the connection establishment,
629 * so we need to pretend we're established to log correctly
630 * and let later states handle the failure.
631 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100632 si->state = SI_ST_EST;
633 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100634 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100635 return 1;
636 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100637 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100638 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100639
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200640 /* XXX cognet: do we really want to kill the connection here ?
641 * Probably not for multiple streams.
642 */
Willy Tarreaua553ae92017-10-05 18:52:17 +0200643 cs_close(srv_cs);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100644
645 if (si->err_type)
646 return 0;
647
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100648 if (si->flags & SI_FL_ERR)
649 si->err_type = SI_ET_CONN_ERR;
650 else
651 si->err_type = SI_ET_CONN_TO;
652 return 0;
653 }
654
655 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800656 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100657 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200658 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
Willy Tarreauede3d882018-10-24 17:17:56 +0200659 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100660 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100661 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200662 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100663 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100664 if (s->srv_error)
665 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100666 return 1;
667 }
668
669 /* we need to wait a bit more if there was no activity either */
Christopher Faulet3b88b8d2018-10-26 17:36:03 +0200670 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100671 return 1;
672
673 /* OK, this means that a connection succeeded. The caller will be
674 * responsible for handling the transition from CON to EST.
675 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100676 si->state = SI_ST_EST;
677 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100678 return 1;
679}
680
681/* This function is called with (si->state == SI_ST_CER) meaning that a
682 * previous connection attempt has failed and that the file descriptor
683 * has already been released. Possible causes include asynchronous error
684 * notification and time out. Possible output states are SI_ST_CLO when
685 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
686 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
687 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
688 * marked as in error state. It returns 0.
689 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200690static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100691{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100692 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200693 struct conn_stream *cs = objt_cs(si->end);
694 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100695
Willy Tarreau87b09662015-04-03 00:22:06 +0200696 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100697 if (objt_server(s->target)) {
698 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100699
Willy Tarreaue7dff022015-04-03 01:14:29 +0200700 if (s->flags & SF_CURR_SESS) {
701 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +0200702 HA_ATOMIC_SUB(&objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100703 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200704
705 if ((si->flags & SI_FL_ERR) &&
706 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
707 /* We tried to connect to a server which is configured
708 * with "verify required" and which doesn't have the
709 * "verifyhost" directive. The server presented a wrong
710 * certificate (a certificate for an unexpected name),
711 * which implies that we have used SNI in the handshake,
712 * and that the server doesn't have the associated cert
713 * and presented a default one.
714 *
715 * This is a serious enough issue not to retry. It's
716 * especially important because this wrong name might
717 * either be the result of a configuration error, and
718 * retrying will only hammer the server, or is caused
719 * by the use of a wrong SNI value, most likely
720 * provided by the client and we don't want to let the
721 * client provoke retries.
722 */
723 si->conn_retries = 0;
724 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100725 }
726
727 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200728 si->conn_retries--;
729 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100730 if (!si->err_type) {
731 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100732 }
733
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100734 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200735 HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200736 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100737 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100738 if (may_dequeue_tasks(objt_server(s->target), s->be))
739 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100740
741 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200742 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100743 s->req.flags |= CF_WRITE_ERROR;
744 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100745
746 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100747 if (s->srv_error)
748 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100749 return 0;
750 }
751
752 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700753 * retry on another server. By default this redispatch occurs on the
754 * last retry, but if configured we allow redispatches to occur on
755 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200756 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100757 * bit to ignore any persistence cookie. We won't count a retry nor a
758 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200759 * If the connection is not persistent, the balancing algorithm is not
760 * determinist (round robin) and there is more than one active server,
761 * we accept to perform an immediate redispatch without waiting since
762 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100763 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200764 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700765 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200766 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100767 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700768 ((s->be->conn_retries - si->conn_retries) %
769 s->be->redispatch_after == 0)) ||
770 ((s->be->redispatch_after < 0) &&
771 ((s->be->conn_retries - si->conn_retries) %
772 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200773 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700774 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100775 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100776 if (may_dequeue_tasks(objt_server(s->target), s->be))
777 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100778
Willy Tarreaue7dff022015-04-03 01:14:29 +0200779 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100780 si->state = SI_ST_REQ;
781 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100782 if (objt_server(s->target))
Christopher Faulet29f77e82017-06-08 14:04:45 +0200783 HA_ATOMIC_ADD(&objt_server(s->target)->counters.retries, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200784 HA_ATOMIC_ADD(&s->be->be_counters.retries, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100785 si->state = SI_ST_ASS;
786 }
787
788 if (si->flags & SI_FL_ERR) {
789 /* The error was an asynchronous connection error, and we will
790 * likely have to retry connecting to the same server, most
791 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200792 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100793 */
794
Willy Tarreaub0290662014-06-13 17:04:44 +0200795 int delay = 1000;
796
797 if (s->be->timeout.connect && s->be->timeout.connect < delay)
798 delay = s->be->timeout.connect;
799
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100800 if (!si->err_type)
801 si->err_type = SI_ET_CONN_ERR;
802
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200803 /* only wait when we're retrying on the same server */
804 if (si->state == SI_ST_ASS ||
805 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
806 (s->be->srv_act <= 1)) {
807 si->state = SI_ST_TAR;
808 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
809 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100810 return 0;
811 }
812 return 0;
813}
814
815/*
816 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200817 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200818 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100819 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200820static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100821{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100822 struct stream_interface *si = &s->si[1];
823 struct channel *req = &s->req;
824 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100825
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100826 /* First, centralize the timers information */
827 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
828 si->exp = TICK_ETERNITY;
829
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100830 if (objt_server(s->target))
831 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100832
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100833 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100834 /* if the user wants to log as soon as possible, without counting
835 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200836 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau66425e32018-07-25 06:55:12 +0200837 /* note: no pend_pos here, session is established */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100838 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100839 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100840 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100841 }
842 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100843 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100844 }
845
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100846 if (!(s->flags & SF_TUNNEL)) {
847 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100848
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100849 /* Be sure to filter response headers if the backend is an HTTP proxy
850 * and if there are filters attached to the stream. */
851 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
852 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
853 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100854
Willy Tarreau8bb2ffb2018-11-14 17:54:13 +0100855 si_rx_endp_more(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200856 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200857 if (req->flags & CF_WAKE_CONNECT) {
858 req->flags |= CF_WAKE_ONCE;
859 req->flags &= ~CF_WAKE_CONNECT;
860 }
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200861 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200862 /* real connections have timeouts */
863 req->wto = s->be->timeout.server;
864 rep->rto = s->be->timeout.server;
Olivier Houchard47e9a1a2018-11-07 17:55:19 +0100865 /* The connection is now established, try to read data from the
866 * underlying layer, and subscribe to recv events. We use a
867 * delayed recv here to give a chance to the data to flow back
868 * by the time we process other tasks.
869 */
870 si_chk_rcv(si);
Willy Tarreaud04e8582010-05-31 12:31:35 +0200871 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100872 req->wex = TICK_ETERNITY;
873}
874
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700875/* Check if the connection request is in such a state that it can be aborted. */
876static int check_req_may_abort(struct channel *req, struct stream *s)
877{
878 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100879 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Willy Tarreau7aa15b02017-12-20 16:56:50 +0100880 (channel_is_empty(req) ||
881 ((s->be->options & PR_O_ABRT_CLOSE) && !(s->si[0].flags & SI_FL_CLEAN_ABRT)))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700882}
883
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100884/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
885 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100886 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
887 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
888 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100889 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200890static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100891{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100892 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100893 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100894 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100895
Christopher Faulet45073512018-07-20 10:16:29 +0200896 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 +0100897 now_ms, __FUNCTION__,
898 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400899 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100900 req->rex, s->res.wex,
901 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200902 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 +0100903
904 if (si->state == SI_ST_ASS) {
905 /* Server assigned to connection request, we have to try to connect now */
906 int conn_err;
907
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700908 /* Before we try to initiate the connection, see if the
909 * request may be aborted instead.
910 */
911 if (check_req_may_abort(req, s)) {
912 si->err_type |= SI_ET_CONN_ABRT;
913 goto abort_connection;
914 }
915
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100916 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100917 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100918
Willy Tarreaue7dff022015-04-03 01:14:29 +0200919 if (conn_err == SF_ERR_NONE) {
Olivier Houchard85b73e92018-10-21 03:18:11 +0200920 struct connection *conn;
921
922 conn = cs_conn(objt_cs(si->end));
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100923 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100924 if (srv)
925 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500926 if (srv)
927 srv_set_sess_last(srv);
Olivier Houchard85b73e92018-10-21 03:18:11 +0200928 /* If we're retrying to connect to the server, and
929 * somebody subscribed to recv or send events, we have
930 * to make sure the polling is active on the new fd.
931 */
932 if (conn->send_wait)
933 conn_xprt_want_send(conn);
934 if (conn->recv_wait)
935 conn_xprt_want_recv(conn);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100936 return;
937 }
938
939 /* We have received a synchronous error. We might have to
940 * abort, retry immediately or redispatch.
941 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200942 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100943 if (!si->err_type) {
944 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100945 }
946
Willy Tarreau827aee92011-03-10 16:55:02 +0100947 if (srv)
948 srv_inc_sess_ctr(srv);
949 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500950 srv_set_sess_last(srv);
951 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +0200952 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200953 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100954
Willy Tarreau87b09662015-04-03 00:22:06 +0200955 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100956 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100957 if (may_dequeue_tasks(srv, s->be))
958 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100959
960 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200961 si_shutr(si);
962 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100963 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100964
965 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
966
Willy Tarreau66425e32018-07-25 06:55:12 +0200967 /* we may need to know the position in the queue for logging */
968 pendconn_cond_unlink(s->pend_pos);
969
Willy Tarreau87b09662015-04-03 00:22:06 +0200970 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100971 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100972 if (s->srv_error)
973 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100974 return;
975 }
976
977 /* We are facing a retryable error, but we don't want to run a
978 * turn-around now, as the problem is likely a source port
979 * allocation problem, so we want to retry now.
980 */
981 si->state = SI_ST_CER;
982 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100983 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100984 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
985 return;
986 }
987 else if (si->state == SI_ST_QUE) {
988 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +0100989 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100990 /* The connection is not in the queue anymore. Either
991 * we have a server connection slot available and we
992 * go directly to the assigned state, or we need to
993 * load-balance first and go to the INI state.
994 */
995 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200996 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100997 si->state = SI_ST_REQ;
998 else {
999 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1000 si->state = SI_ST_ASS;
1001 }
1002 return;
1003 }
1004
1005 /* Connection request still in queue... */
1006 if (si->flags & SI_FL_EXP) {
1007 /* ... and timeout expired */
1008 si->exp = TICK_ETERNITY;
1009 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001010
1011 /* we may need to know the position in the queue for logging */
1012 pendconn_cond_unlink(s->pend_pos);
1013
Willy Tarreau827aee92011-03-10 16:55:02 +01001014 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001015 HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001016 HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +02001017 si_shutr(si);
1018 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001019 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001020 if (!si->err_type)
1021 si->err_type = SI_ET_QUEUE_TO;
1022 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001023 if (s->srv_error)
1024 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001025 return;
1026 }
1027
1028 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001029 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001030 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001031
1032 /* we may need to know the position in the queue for logging */
1033 pendconn_cond_unlink(s->pend_pos);
1034
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001035 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001036 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001037 }
1038
1039 /* Nothing changed */
1040 return;
1041 }
1042 else if (si->state == SI_ST_TAR) {
1043 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001044 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001045 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001046 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001047 }
1048
1049 if (!(si->flags & SI_FL_EXP))
1050 return; /* still in turn-around */
1051
1052 si->exp = TICK_ETERNITY;
1053
Willy Tarreau87b09662015-04-03 00:22:06 +02001054 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001055 * marked "assigned".
1056 * FIXME: Should we force a redispatch attempt when the server is down ?
1057 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001058 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001059 si->state = SI_ST_ASS;
1060 else
1061 si->state = SI_ST_REQ;
1062 return;
1063 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001064 return;
1065
1066abort_connection:
1067 /* give up */
1068 si->exp = TICK_ETERNITY;
1069 si_shutr(si);
1070 si_shutw(si);
1071 si->state = SI_ST_CLO;
1072 if (s->srv_error)
1073 s->srv_error(s, si);
1074 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001075}
1076
Willy Tarreau87b09662015-04-03 00:22:06 +02001077/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001078 * also counts a failed request if the server state has not reached the request
1079 * stage.
1080 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001081static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001082{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001083 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +09001084 if (s->si[1].state < SI_ST_REQ) {
1085
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001086 HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001087 if (strm_li(s) && strm_li(s)->counters)
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +02001088 HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001089
Willy Tarreaue7dff022015-04-03 01:14:29 +02001090 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001091 }
1092 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001093 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +09001094 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001095 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001096 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001097 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001098 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001099 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001100 }
1101}
1102
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001103/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001104 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1105 * a real connection to a server, indicating that a server has been assigned,
1106 * or SI_ST_EST for a successful connection to an applet. It may also return
1107 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001108 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001109static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001110{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001111 struct stream_interface *si = &s->si[1];
1112
Christopher Faulet45073512018-07-20 10:16:29 +02001113 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 +01001114 now_ms, __FUNCTION__,
1115 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001116 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001117 s->req.rex, s->res.wex,
1118 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001119 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 +01001120
1121 if (si->state != SI_ST_REQ)
1122 return;
1123
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001124 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1125 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001126 struct appctx *appctx = objt_appctx(si->end);
1127
1128 if (!appctx || appctx->applet != __objt_applet(s->target))
1129 appctx = stream_int_register_handler(si, objt_applet(s->target));
1130
1131 if (!appctx) {
1132 /* No more memory, let's immediately abort. Force the
1133 * error code to ignore the ERR_LOCAL which is not a
1134 * real error.
1135 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001136 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001137
1138 si_shutr(si);
1139 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001140 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001141 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001142 si->state = SI_ST_CLO;
1143 if (s->srv_error)
1144 s->srv_error(s, si);
1145 return;
1146 }
1147
Willy Tarreauee8269e2017-11-23 17:34:29 +01001148 if (tv_iszero(&s->logs.tv_request))
1149 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001150 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001151 si->state = SI_ST_EST;
1152 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001153 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001154 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001155 return;
1156 }
1157
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001158 /* Try to assign a server */
1159 if (srv_redispatch_connect(s) != 0) {
1160 /* We did not get a server. Either we queued the
1161 * connection request, or we encountered an error.
1162 */
1163 if (si->state == SI_ST_QUE)
1164 return;
1165
1166 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001167 si_shutr(si);
1168 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001169 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001170 if (!si->err_type)
1171 si->err_type = SI_ET_CONN_OTHER;
1172 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001173 if (s->srv_error)
1174 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001175 return;
1176 }
1177
1178 /* The server is assigned */
1179 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1180 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001181 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001182}
1183
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001184/* This function parses the use-service action ruleset. It executes
1185 * the associated ACL and set an applet as a stream or txn final node.
1186 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1187 * consistent state. It returns ACT_RET_STOP in succes case because
1188 * use-service must be a terminal action. Returns ACT_RET_YIELD
1189 * if the initialisation function require more data.
1190 */
1191enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1192 struct session *sess, struct stream *s, int flags)
1193
1194{
1195 struct appctx *appctx;
1196
1197 /* Initialises the applet if it is required. */
1198 if (flags & ACT_FLAG_FIRST) {
1199 /* Register applet. this function schedules the applet. */
1200 s->target = &rule->applet.obj_type;
1201 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1202 return ACT_RET_ERR;
1203
1204 /* Initialise the context. */
1205 appctx = si_appctx(&s->si[1]);
1206 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1207 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001208
1209 /* enable the minimally required analyzers in case of HTTP
1210 * keep-alive to properly handle keep-alive and compression
1211 * on the HTTP response.
1212 */
1213 if (rule->from == ACT_F_HTTP_REQ) {
1214 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1215 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1216 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001217 }
1218 else
1219 appctx = si_appctx(&s->si[1]);
1220
1221 /* Stops the applet sheduling, in case of the init function miss
1222 * some data.
1223 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001224 si_stop_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001225
1226 /* Call initialisation. */
1227 if (rule->applet.init)
1228 switch (rule->applet.init(appctx, px, s)) {
1229 case 0: return ACT_RET_ERR;
1230 case 1: break;
1231 default: return ACT_RET_YIELD;
1232 }
1233
1234 /* Now we can schedule the applet. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001235 si_cant_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001236 appctx_wakeup(appctx);
1237
1238 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001239 HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001240
1241 /* The flag SF_ASSIGNED prevent from server assignment. */
1242 s->flags |= SF_ASSIGNED;
1243
1244 return ACT_RET_STOP;
1245}
1246
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001247/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001248 * if appropriate. The default_backend rule is also considered, then the
1249 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001250 * It returns 1 if the processing can continue on next analysers, or zero if it
1251 * either needs more data or wants to immediately abort the request.
1252 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001253static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001254{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001255 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001256 struct session *sess = s->sess;
1257 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001258
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001259 req->analysers &= ~an_bit;
1260 req->analyse_exp = TICK_ETERNITY;
1261
Christopher Faulet45073512018-07-20 10:16:29 +02001262 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 +02001263 now_ms, __FUNCTION__,
1264 s,
1265 req,
1266 req->rex, req->wex,
1267 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001268 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001269 req->analysers);
1270
1271 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001272 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001273 struct switching_rule *rule;
1274
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001275 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001276 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001277
Willy Tarreauf51658d2014-04-23 01:21:56 +02001278 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001279 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001280 ret = acl_pass(ret);
1281 if (rule->cond->pol == ACL_COND_UNLESS)
1282 ret = !ret;
1283 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001284
1285 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001286 /* If the backend name is dynamic, try to resolve the name.
1287 * If we can't resolve the name, or if any error occurs, break
1288 * the loop and fallback to the default backend.
1289 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001290 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001291
1292 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001293 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001294
1295 tmp = alloc_trash_chunk();
1296 if (!tmp)
1297 goto sw_failed;
1298
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001299 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1300 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001301
1302 free_trash_chunk(tmp);
1303 tmp = NULL;
1304
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001305 if (!backend)
1306 break;
1307 }
1308 else
1309 backend = rule->be.backend;
1310
Willy Tarreau87b09662015-04-03 00:22:06 +02001311 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001312 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001313 break;
1314 }
1315 }
1316
1317 /* To ensure correct connection accounting on the backend, we
1318 * have to assign one if it was not set (eg: a listen). This
1319 * measure also takes care of correctly setting the default
1320 * backend if any.
1321 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001322 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001323 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001324 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001325 }
1326
Willy Tarreaufb356202010-08-03 14:02:05 +02001327 /* 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 +02001328 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001329 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1330 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001331 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001332 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001333
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001334 /* 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 +02001335 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001336 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001337 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001338 int ret = 1;
1339
1340 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001341 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 +01001342 ret = acl_pass(ret);
1343 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1344 ret = !ret;
1345 }
1346
1347 if (ret) {
1348 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001349 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001350 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001351 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001352 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001353 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001354 break;
1355 }
1356 }
1357
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001358 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001359
1360 sw_failed:
1361 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001362 channel_abort(&s->req);
1363 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001364
Willy Tarreaue7dff022015-04-03 01:14:29 +02001365 if (!(s->flags & SF_ERR_MASK))
1366 s->flags |= SF_ERR_RESOURCE;
1367 if (!(s->flags & SF_FINST_MASK))
1368 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001369
Willy Tarreaueee5b512015-04-03 23:46:31 +02001370 if (s->txn)
1371 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001372 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001373 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001374 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001375}
1376
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001377/* This stream analyser works on a request. It applies all use-server rules on
1378 * it then returns 1. The data must already be present in the buffer otherwise
1379 * they won't match. It always returns 1.
1380 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001381static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001382{
1383 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001384 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001385 struct server_rule *rule;
1386
Christopher Faulet45073512018-07-20 10:16:29 +02001387 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 +02001388 now_ms, __FUNCTION__,
1389 s,
1390 req,
1391 req->rex, req->wex,
1392 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001393 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001394 req->analysers);
1395
Willy Tarreaue7dff022015-04-03 01:14:29 +02001396 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001397 list_for_each_entry(rule, &px->server_rules, list) {
1398 int ret;
1399
Willy Tarreau192252e2015-04-04 01:47:55 +02001400 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001401 ret = acl_pass(ret);
1402 if (rule->cond->pol == ACL_COND_UNLESS)
1403 ret = !ret;
1404
1405 if (ret) {
1406 struct server *srv = rule->srv.ptr;
1407
Emeric Brun52a91d32017-08-31 14:41:55 +02001408 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001409 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001410 (s->flags & SF_FORCE_PRST)) {
1411 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001412 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001413 break;
1414 }
1415 /* if the server is not UP, let's go on with next rules
1416 * just in case another one is suited.
1417 */
1418 }
1419 }
1420 }
1421
1422 req->analysers &= ~an_bit;
1423 req->analyse_exp = TICK_ETERNITY;
1424 return 1;
1425}
1426
Emeric Brun1d33b292010-01-04 15:47:17 +01001427/* This stream analyser works on a request. It applies all sticking rules on
1428 * it then returns 1. The data must already be present in the buffer otherwise
1429 * they won't match. It always returns 1.
1430 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001431static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001432{
1433 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001434 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001435 struct sticking_rule *rule;
1436
Christopher Faulet45073512018-07-20 10:16:29 +02001437 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 +01001438 now_ms, __FUNCTION__,
1439 s,
1440 req,
1441 req->rex, req->wex,
1442 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001443 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001444 req->analysers);
1445
1446 list_for_each_entry(rule, &px->sticking_rules, list) {
1447 int ret = 1 ;
1448 int i;
1449
Willy Tarreau9667a802013-12-09 12:52:13 +01001450 /* Only the first stick store-request of each table is applied
1451 * and other ones are ignored. The purpose is to allow complex
1452 * configurations which look for multiple entries by decreasing
1453 * order of precision and to stop at the first which matches.
1454 * An example could be a store of the IP address from an HTTP
1455 * header first, then from the source if not found.
1456 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001457 for (i = 0; i < s->store_count; i++) {
1458 if (rule->table.t == s->store[i].table)
1459 break;
1460 }
1461
1462 if (i != s->store_count)
1463 continue;
1464
1465 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001466 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001467 ret = acl_pass(ret);
1468 if (rule->cond->pol == ACL_COND_UNLESS)
1469 ret = !ret;
1470 }
1471
1472 if (ret) {
1473 struct stktable_key *key;
1474
Willy Tarreau192252e2015-04-04 01:47:55 +02001475 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 +01001476 if (!key)
1477 continue;
1478
1479 if (rule->flags & STK_IS_MATCH) {
1480 struct stksess *ts;
1481
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001482 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001483 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001484 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001485 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001486
1487 /* srv found in table */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001488 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001489 ptr = __stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001490 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001491 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun1d33b292010-01-04 15:47:17 +01001492 if (node) {
1493 struct server *srv;
1494
1495 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001496 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001497 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001498 (s->flags & SF_FORCE_PRST)) {
1499 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001500 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001501 }
1502 }
1503 }
Emeric Brun819fc6f2017-06-13 19:37:32 +02001504 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001505 }
1506 }
1507 if (rule->flags & STK_IS_STORE) {
1508 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1509 struct stksess *ts;
1510
1511 ts = stksess_new(rule->table.t, key);
1512 if (ts) {
1513 s->store[s->store_count].table = rule->table.t;
1514 s->store[s->store_count++].ts = ts;
1515 }
1516 }
1517 }
1518 }
1519 }
1520
1521 req->analysers &= ~an_bit;
1522 req->analyse_exp = TICK_ETERNITY;
1523 return 1;
1524}
1525
1526/* This stream analyser works on a response. It applies all store rules on it
1527 * then returns 1. The data must already be present in the buffer otherwise
1528 * they won't match. It always returns 1.
1529 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001530static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001531{
1532 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001533 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001534 struct sticking_rule *rule;
1535 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001536 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001537
Christopher Faulet45073512018-07-20 10:16:29 +02001538 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 +01001539 now_ms, __FUNCTION__,
1540 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001541 rep,
1542 rep->rex, rep->wex,
1543 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001544 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001545 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001546
1547 list_for_each_entry(rule, &px->storersp_rules, list) {
1548 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001549
Willy Tarreau9667a802013-12-09 12:52:13 +01001550 /* Only the first stick store-response of each table is applied
1551 * and other ones are ignored. The purpose is to allow complex
1552 * configurations which look for multiple entries by decreasing
1553 * order of precision and to stop at the first which matches.
1554 * An example could be a store of a set-cookie value, with a
1555 * fallback to a parameter found in a 302 redirect.
1556 *
1557 * The store-response rules are not allowed to override the
1558 * store-request rules for the same table, but they may coexist.
1559 * Thus we can have up to one store-request entry and one store-
1560 * response entry for the same table at any time.
1561 */
1562 for (i = nbreq; i < s->store_count; i++) {
1563 if (rule->table.t == s->store[i].table)
1564 break;
1565 }
1566
1567 /* skip existing entries for this table */
1568 if (i < s->store_count)
1569 continue;
1570
Emeric Brun1d33b292010-01-04 15:47:17 +01001571 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001572 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001573 ret = acl_pass(ret);
1574 if (rule->cond->pol == ACL_COND_UNLESS)
1575 ret = !ret;
1576 }
1577
1578 if (ret) {
1579 struct stktable_key *key;
1580
Willy Tarreau192252e2015-04-04 01:47:55 +02001581 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 +01001582 if (!key)
1583 continue;
1584
Willy Tarreau37e340c2013-12-06 23:05:21 +01001585 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001586 struct stksess *ts;
1587
1588 ts = stksess_new(rule->table.t, key);
1589 if (ts) {
1590 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001591 s->store[s->store_count++].ts = ts;
1592 }
1593 }
1594 }
1595 }
1596
1597 /* process store request and store response */
1598 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001599 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001600 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001601
Willy Tarreauc93cd162014-05-13 15:54:22 +02001602 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001603 stksess_free(s->store[i].table, s->store[i].ts);
1604 s->store[i].ts = NULL;
1605 continue;
1606 }
1607
Emeric Brun819fc6f2017-06-13 19:37:32 +02001608 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1609 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001610 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001611 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001612 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001613 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001614
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001615 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001616 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
1617 stktable_data_cast(ptr, server_id) = __objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001618 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001619 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001620 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001621 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001622
1623 rep->analysers &= ~an_bit;
1624 rep->analyse_exp = TICK_ETERNITY;
1625 return 1;
1626}
1627
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001628/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001629 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001630 */
1631#define UPDATE_ANALYSERS(real, list, back, flag) { \
1632 list = (((list) & ~(flag)) | ~(back)) & (real); \
1633 back = real; \
1634 if (!(list)) \
1635 break; \
1636 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1637 continue; \
1638}
1639
Christopher Fauleta9215b72016-05-11 17:06:28 +02001640/* These 2 following macros call an analayzer for the specified channel if the
1641 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001642 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001643 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001644 * AN_REQ/RES_HTTP_XFER_BODY) */
1645#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1646 { \
1647 if ((list) & (flag)) { \
1648 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001649 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001650 break; \
1651 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1652 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001653 if (!flt_post_analyze((strm), (chn), (flag))) \
1654 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001655 } \
1656 else { \
1657 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1658 break; \
1659 } \
1660 UPDATE_ANALYSERS((chn)->analysers, (list), \
1661 (back), (flag)); \
1662 } \
1663 }
1664
1665#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1666 { \
1667 if ((list) & (flag)) { \
1668 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1669 break; \
1670 UPDATE_ANALYSERS((chn)->analysers, (list), \
1671 (back), (flag)); \
1672 } \
1673 }
1674
Willy Tarreau87b09662015-04-03 00:22:06 +02001675/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001676 * then puts it back to the wait queue in a clean state, or cleans up its
1677 * resources if it must be deleted. Returns in <next> the date the task wants
1678 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1679 * nothing too many times, the request and response buffers flags are monitored
1680 * and each function is called only if at least another function has changed at
1681 * least one flag it is interested in.
1682 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001683struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001684{
Willy Tarreau827aee92011-03-10 16:55:02 +01001685 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001686 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001687 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001688 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001689 unsigned int rq_prod_last, rq_cons_last;
1690 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001691 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001692 struct channel *req, *res;
1693 struct stream_interface *si_f, *si_b;
1694
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001695 activity[tid].stream++;
1696
Willy Tarreau8f128b42014-11-28 15:07:47 +01001697 req = &s->req;
1698 res = &s->res;
1699
1700 si_f = &s->si[0];
1701 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001702
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001703 /* First, attempt to receive pending data from I/O layers */
Willy Tarreauade64782018-11-17 19:51:07 +01001704 si_sync_recv(si_f);
1705 si_sync_recv(si_b);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001706
Olivier Houchard53216e72018-10-10 15:46:36 +02001707redo:
Olivier Houchardc2aa7112018-09-11 18:27:21 +02001708
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001709 //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 +01001710 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001711
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001712 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001713 if (s->txn)
1714 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001715
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001716 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001717 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1718 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001719
1720 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001721 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1722 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001723
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001724 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001725 si_f->flags |= SI_FL_DONT_WAKE;
1726 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001727
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001728 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001729 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001730
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001731 /* 1a: Check for low level timeouts if needed. We just set a flag on
1732 * stream interfaces when their timeouts have expired.
1733 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001734 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001735 stream_int_check_timeouts(si_f);
1736 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001737
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001738 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001739 * for future reads or writes. Note: this will also concern upper layers
1740 * but we do not touch any other flag. We must be careful and correctly
1741 * detect state changes when calling them.
1742 */
1743
Willy Tarreau8f128b42014-11-28 15:07:47 +01001744 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001745
Willy Tarreau8f128b42014-11-28 15:07:47 +01001746 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1747 si_b->flags |= SI_FL_NOLINGER;
1748 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001749 }
1750
Willy Tarreau8f128b42014-11-28 15:07:47 +01001751 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1752 if (si_f->flags & SI_FL_NOHALF)
1753 si_f->flags |= SI_FL_NOLINGER;
1754 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001755 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001756
Willy Tarreau8f128b42014-11-28 15:07:47 +01001757 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001758
Willy Tarreau8f128b42014-11-28 15:07:47 +01001759 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1760 si_f->flags |= SI_FL_NOLINGER;
1761 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001762 }
1763
Willy Tarreau8f128b42014-11-28 15:07:47 +01001764 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1765 if (si_b->flags & SI_FL_NOHALF)
1766 si_b->flags |= SI_FL_NOLINGER;
1767 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001768 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001769
Christopher Fauleta00d8172016-11-10 14:58:05 +01001770 if (HAS_FILTERS(s))
1771 flt_stream_check_timeouts(s);
1772
Willy Tarreau798f4322012-11-08 14:49:17 +01001773 /* Once in a while we're woken up because the task expires. But
1774 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001775 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001776 * timeout needs to be refreshed.
1777 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001778 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001779 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Willy Tarreauede3d882018-10-24 17:17:56 +02001780 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001781 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001782 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001783 si_f->flags &= ~SI_FL_DONT_WAKE;
1784 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001785 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001786 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001787 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001788
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001789 /* below we may emit error messages so we have to ensure that we have
1790 * our buffers properly allocated.
1791 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001792 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001793 /* No buffer available, we've been subscribed to the list of
1794 * buffer waiters, let's wait for our turn.
1795 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001796 si_f->flags &= ~SI_FL_DONT_WAKE;
1797 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001798 goto update_exp_and_leave;
1799 }
1800
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001801 /* 1b: check for low-level errors reported at the stream interface.
1802 * First we check if it's a retryable error (in which case we don't
1803 * want to tell the buffer). Otherwise we report the error one level
1804 * upper by setting flags into the buffers. Note that the side towards
1805 * the client cannot have connect (hence retryable) errors. Also, the
1806 * connection setup code must be able to deal with any type of abort.
1807 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001808 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001809 if (unlikely(si_f->flags & SI_FL_ERR)) {
1810 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1811 si_shutr(si_f);
1812 si_shutw(si_f);
1813 stream_int_report_error(si_f);
1814 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001815 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1816 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001817 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001818 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001819 if (!(s->flags & SF_ERR_MASK))
1820 s->flags |= SF_ERR_CLICL;
1821 if (!(s->flags & SF_FINST_MASK))
1822 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001823 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001824 }
1825 }
1826
Willy Tarreau8f128b42014-11-28 15:07:47 +01001827 if (unlikely(si_b->flags & SI_FL_ERR)) {
1828 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1829 si_shutr(si_b);
1830 si_shutw(si_b);
1831 stream_int_report_error(si_b);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001832 HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001833 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001834 HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001835 if (!(req->analysers) && !(res->analysers)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001836 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1837 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001838 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02001839 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001840 if (!(s->flags & SF_ERR_MASK))
1841 s->flags |= SF_ERR_SRVCL;
1842 if (!(s->flags & SF_FINST_MASK))
1843 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001844 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001845 }
1846 /* note: maybe we should process connection errors here ? */
1847 }
1848
Willy Tarreau8f128b42014-11-28 15:07:47 +01001849 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001850 /* we were trying to establish a connection on the server side,
1851 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1852 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001853 if (unlikely(!sess_update_st_con_tcp(s)))
1854 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001855 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001856 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001857
1858 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1859 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1860 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1861 */
1862 }
1863
Willy Tarreau8f128b42014-11-28 15:07:47 +01001864 rq_prod_last = si_f->state;
1865 rq_cons_last = si_b->state;
1866 rp_cons_last = si_f->state;
1867 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001868
1869 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001870 /* Check for connection closure */
1871
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001872 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001873 "[%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 +01001874 now_ms, __FUNCTION__, __LINE__,
1875 t,
1876 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001877 req, res,
1878 req->rex, res->wex,
1879 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001880 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 +01001881 si_f->err_type, si_b->err_type,
1882 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001883
1884 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001885 if (unlikely(si_f->state == SI_ST_DIS))
1886 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001887
1888 /* When a server-side connection is released, we have to count it and
1889 * check for pending connections on this server.
1890 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001891 if (unlikely(si_b->state == SI_ST_DIS)) {
1892 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001893 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001894 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001895 if (s->flags & SF_CURR_SESS) {
1896 s->flags &= ~SF_CURR_SESS;
Christopher Faulet29f77e82017-06-08 14:04:45 +02001897 HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001898 }
1899 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001900 if (may_dequeue_tasks(srv, s->be))
1901 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001902 }
1903 }
1904
1905 /*
1906 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1907 * at this point.
1908 */
1909
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001910 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001911 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001912 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1913 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001914 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001915 si_f->state != rq_prod_last ||
1916 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001917 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001918 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001919
Willy Tarreau8f128b42014-11-28 15:07:47 +01001920 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001921 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001922 unsigned int ana_list;
1923 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001924
Willy Tarreau90deb182010-01-07 00:20:41 +01001925 /* it's up to the analysers to stop new connections,
1926 * disable reading or closing. Note: if an analyser
1927 * disables any of these bits, it is responsible for
1928 * enabling them again when it disables itself, so
1929 * that other analysers are called in similar conditions.
1930 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001931 channel_auto_read(req);
1932 channel_auto_connect(req);
1933 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001934
1935 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001936 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001937 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001938 * the list when not needed. Any analyser may return 0
1939 * to break out of the loop, either because of missing
1940 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001941 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001942 * analyser, and we may loop again if other analysers
1943 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001944 *
1945 * We build a list of analysers to run. We evaluate all
1946 * of these analysers in the order of the lower bit to
1947 * the higher bit. This ordering is very important.
1948 * An analyser will often add/remove other analysers,
1949 * including itself. Any changes to itself have no effect
1950 * on the loop. If it removes any other analysers, we
1951 * want those analysers not to be called anymore during
1952 * this loop. If it adds an analyser that is located
1953 * after itself, we want it to be scheduled for being
1954 * processed during the loop. If it adds an analyser
1955 * which is located before it, we want it to switch to
1956 * it immediately, even if it has already been called
1957 * once but removed since.
1958 *
1959 * In order to achieve this, we compare the analyser
1960 * list after the call with a copy of it before the
1961 * call. The work list is fed with analyser bits that
1962 * appeared during the call. Then we compare previous
1963 * work list with the new one, and check the bits that
1964 * appeared. If the lowest of these bits is lower than
1965 * the current bit, it means we have enabled a previous
1966 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001967 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001968
Willy Tarreau8f128b42014-11-28 15:07:47 +01001969 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001970 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001971 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001972 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001973 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1974 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1975 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1976 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1977 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001978 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001979 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1980 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1981 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1982 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1983 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1984 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1985 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001986 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001987 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02001988 ANALYZE (s, req, pcli_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001989 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1990 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001991 break;
1992 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001993 }
Willy Tarreau84455332009-03-15 22:34:05 +01001994
Willy Tarreau8f128b42014-11-28 15:07:47 +01001995 rq_prod_last = si_f->state;
1996 rq_cons_last = si_b->state;
1997 req->flags &= ~CF_WAKE_ONCE;
1998 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001999
Willy Tarreau8f128b42014-11-28 15:07:47 +01002000 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002001 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002002 }
2003
Willy Tarreau576507f2010-01-07 00:09:04 +01002004 /* we'll monitor the request analysers while parsing the response,
2005 * because some response analysers may indirectly enable new request
2006 * analysers (eg: HTTP keep-alive).
2007 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002008 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01002009
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002010 resync_response:
2011 /* Analyse response */
2012
Willy Tarreau8f128b42014-11-28 15:07:47 +01002013 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
2014 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002015 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002016 si_f->state != rp_cons_last ||
2017 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002018 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002019 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002020
Willy Tarreau8f128b42014-11-28 15:07:47 +01002021 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002022 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002023 unsigned int ana_list;
2024 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002025
Willy Tarreau90deb182010-01-07 00:20:41 +01002026 /* it's up to the analysers to stop disable reading or
2027 * closing. Note: if an analyser disables any of these
2028 * bits, it is responsible for enabling them again when
2029 * it disables itself, so that other analysers are called
2030 * in similar conditions.
2031 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002032 channel_auto_read(res);
2033 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002034
2035 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002036 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002037 * to MSB. The analysers must remove themselves from
2038 * the list when not needed. Any analyser may return 0
2039 * to break out of the loop, either because of missing
2040 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002041 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002042 * analyser, and we may loop again if other analysers
2043 * are added in the middle.
2044 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002045
Willy Tarreau8f128b42014-11-28 15:07:47 +01002046 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002047 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002048 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002049 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
2050 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002051 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
2052 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
2053 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
2054 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 +01002055 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002056 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002057 ANALYZE (s, res, pcli_wait_for_response, ana_list, ana_back, AN_RES_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002058 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
2059 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002060 break;
2061 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002062 }
2063
Willy Tarreau8f128b42014-11-28 15:07:47 +01002064 rp_cons_last = si_f->state;
2065 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02002066 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002067 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002068
Willy Tarreau8f128b42014-11-28 15:07:47 +01002069 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002070 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002071 }
2072
Willy Tarreau576507f2010-01-07 00:09:04 +01002073 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002074 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002075 goto resync_request;
2076
Willy Tarreau8f128b42014-11-28 15:07:47 +01002077 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002078 goto resync_request;
2079
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002080 /* FIXME: here we should call protocol handlers which rely on
2081 * both buffers.
2082 */
2083
2084
2085 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002086 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002087 * we're just in a data phase here since it means we have not
2088 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002089 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002090 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002091 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002092 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002093 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002094 req->analysers = 0;
2095 if (req->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002096 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2097 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002098 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002099 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002100 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002101 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002102 else if (req->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002103 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2104 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002105 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002106 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002107 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002108 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002109 else if (req->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002110 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2111 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002112 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002113 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002114 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002115 }
2116 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002117 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2118 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002119 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002120 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002121 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002122 }
Willy Tarreau84455332009-03-15 22:34:05 +01002123 sess_set_term_flags(s);
2124 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002125 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002126 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002127 res->analysers = 0;
2128 if (res->flags & CF_READ_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002129 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2130 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002131 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002132 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002133 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002134 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002135 else if (res->flags & CF_READ_TIMEOUT) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002136 HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2137 HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002138 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002139 HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002140 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002141 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002142 else if (res->flags & CF_WRITE_ERROR) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002143 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2144 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002145 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002146 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002147 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002148 }
2149 else {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002150 HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2151 HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002152 if (srv)
Christopher Faulet29f77e82017-06-08 14:04:45 +02002153 HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002154 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002155 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002156 sess_set_term_flags(s);
2157 }
Willy Tarreau84455332009-03-15 22:34:05 +01002158 }
2159
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002160 /*
2161 * Here we take care of forwarding unhandled data. This also includes
2162 * connection establishments and shutdown requests.
2163 */
2164
2165
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002166 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002167 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002168 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002169 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002170 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002171 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002172 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2173 (si_f->state >= SI_ST_EST) &&
2174 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002175 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002176 * attached to it. If any data are left in, we'll permit them to
2177 * move.
2178 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002179 channel_auto_read(req);
2180 channel_auto_connect(req);
2181 channel_auto_close(req);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002182 c_adv(req, ci_data(req));
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002183
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002184 /* We'll let data flow between the producer (if still connected)
2185 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002186 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002187 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002188 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002189
2190 /* Just in order to support fetching HTTP contents after start
2191 * of forwarding when the HTTP forwarding analyser is not used,
2192 * we simply reset msg->sov so that HTTP rewinding points to the
2193 * headers.
2194 */
Christopher Fauleted28da52018-10-31 13:43:33 +01002195 if (IS_HTX_STRM(s) && s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002196 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - co_data(req);
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002197 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002198
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002199 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002200 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2201 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002202 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002203 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2204 (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 +01002205 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002206 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2207 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002208 (req->flags & CF_STREAMER_FAST)))) {
2209 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002210 }
2211
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002212 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002213 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002214
2215 /*
2216 * Now forward all shutdown requests between both sides of the buffer
2217 */
2218
Willy Tarreau520d95e2009-09-19 21:04:57 +02002219 /* first, let's check if the request buffer needs to shutdown(write), which may
2220 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002221 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2222 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002223 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002224 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002225 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002226 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002227 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002228
2229 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002230 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2231 channel_is_empty(req))) {
2232 if (req->flags & CF_READ_ERROR)
2233 si_b->flags |= SI_FL_NOLINGER;
2234 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002235 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002236
2237 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002238 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2239 !req->analysers))
2240 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002241
2242 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002243 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2244 if (si_f->flags & SI_FL_NOHALF)
2245 si_f->flags |= SI_FL_NOLINGER;
2246 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002247 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002248
Willy Tarreau520d95e2009-09-19 21:04:57 +02002249 /* it's possible that an upper layer has requested a connection setup or abort.
2250 * There are 2 situations where we decide to establish a new connection :
2251 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002252 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002253 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002254 if (si_b->state == SI_ST_INI) {
2255 if (!(req->flags & CF_SHUTW)) {
2256 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002257 /* If we have an appctx, there is no connect method, so we
2258 * immediately switch to the connected state, otherwise we
2259 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002260 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002261 si_b->state = SI_ST_REQ; /* new connection requested */
2262 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002263 }
Willy Tarreau73201222009-08-16 18:27:24 +02002264 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002265 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002266 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002267 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2268 channel_shutw_now(req); /* fix buffer flags upon abort */
2269 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002270 }
Willy Tarreau92795622009-03-06 12:51:23 +01002271 }
2272
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002273
2274 /* we may have a pending connection request, or a connection waiting
2275 * for completion.
2276 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002277 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002278
2279 /* prune the request variables and swap to the response variables. */
2280 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreaucda7f3f2018-10-28 13:44:36 +01002281 if (!LIST_ISEMPTY(&s->vars_reqres.head)) {
2282 vars_prune(&s->vars_reqres, s->sess, s);
2283 vars_init(&s->vars_reqres, SCOPE_RES);
2284 }
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002285 }
2286
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002287 do {
2288 /* nb: step 1 might switch from QUE to ASS, but we first want
2289 * to give a chance to step 2 to perform a redirect if needed.
2290 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002291 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002292 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002293 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002294 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002295
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002296 /* applets directly go to the ESTABLISHED state. Similarly,
2297 * servers experience the same fate when their connection
2298 * is reused.
2299 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002300 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002301 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002302
Willy Tarreaub44c8732013-12-31 23:16:50 +01002303 /* Now we can add the server name to a header (if requested) */
2304 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002305 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002306 (s->be->server_id_hdr_name != NULL) &&
2307 (s->be->mode == PR_MODE_HTTP) &&
2308 objt_server(s->target)) {
Christopher Faulet27a3dc82018-10-23 15:34:07 +02002309 http_send_name_header(s, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002310 }
2311
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002312 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002313 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002314 http_perform_server_redirect(s, si_b);
2315 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002316 }
2317
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002318 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002319 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002320 goto resync_stream_interface;
2321
Willy Tarreau815a9b22010-07-27 17:15:12 +02002322 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002323 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002324 goto resync_request;
2325
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002326 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002327
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002328 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002329 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002330 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002331 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002332 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002333 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002334 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2335 (si_b->state >= SI_ST_EST) &&
2336 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002337 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002338 * attached to it. If any data are left in, we'll permit them to
2339 * move.
2340 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002341 channel_auto_read(res);
2342 channel_auto_close(res);
Willy Tarreau144c5c42018-06-15 15:16:51 +02002343 c_adv(res, ci_data(res));
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002344
2345 /* We'll let data flow between the producer (if still connected)
2346 * to the consumer.
2347 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002348 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002349 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002350
Willy Tarreau42529c32015-07-09 18:38:57 +02002351 /* Just in order to support fetching HTTP contents after start
2352 * of forwarding when the HTTP forwarding analyser is not used,
2353 * we simply reset msg->sov so that HTTP rewinding points to the
2354 * headers.
2355 */
Christopher Fauleted28da52018-10-31 13:43:33 +01002356 if (IS_HTX_STRM(s) && s->txn)
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02002357 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - co_data(res);
Willy Tarreau42529c32015-07-09 18:38:57 +02002358
Willy Tarreauce887fd2012-05-12 12:50:00 +02002359 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002360 * tunnel timeout set, use it now. Note that we must respect
2361 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002362 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002363 if (!req->analysers && s->be->timeout.tunnel) {
2364 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002365 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002366
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002367 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2368 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002369 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2370 res->rto = s->be->timeout.serverfin;
2371 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2372 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002373 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2374 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002375
Willy Tarreau8f128b42014-11-28 15:07:47 +01002376 req->rex = tick_add(now_ms, req->rto);
2377 req->wex = tick_add(now_ms, req->wto);
2378 res->rex = tick_add(now_ms, res->rto);
2379 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002380 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002381 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002382
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002383 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002384 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2385 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002386 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002387 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2388 (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 +01002389 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002390 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2391 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002392 (res->flags & CF_STREAMER_FAST)))) {
2393 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002394 }
2395
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002396 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002397 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002398
2399 /*
2400 * Now forward all shutdown requests between both sides of the buffer
2401 */
2402
2403 /*
2404 * FIXME: this is probably where we should produce error responses.
2405 */
2406
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002407 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002408 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002409 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002410 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002411 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002412
2413 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002414 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2415 channel_is_empty(res))) {
2416 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002417 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002418
2419 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002420 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2421 !res->analysers)
2422 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002423
2424 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002425 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2426 if (si_b->flags & SI_FL_NOHALF)
2427 si_b->flags |= SI_FL_NOLINGER;
2428 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002429 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002430
Willy Tarreau8f128b42014-11-28 15:07:47 +01002431 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002432 goto resync_stream_interface;
2433
Willy Tarreau8f128b42014-11-28 15:07:47 +01002434 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002435 goto resync_request;
2436
Willy Tarreau8f128b42014-11-28 15:07:47 +01002437 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002438 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002439
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002440 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002441 si_f->flags &= ~SI_FL_DONT_WAKE;
2442 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002443
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002444 /* This is needed only when debugging is enabled, to indicate
2445 * client-side or server-side close. Please note that in the unlikely
2446 * event where both sides would close at once, the sequence is reported
2447 * on the server side first.
2448 */
2449 if (unlikely((global.mode & MODE_DEBUG) &&
2450 (!(global.mode & MODE_QUIET) ||
2451 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002452 if (si_b->state == SI_ST_CLO &&
2453 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002454 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002455 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002456 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2457 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002458 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002459 }
2460
Willy Tarreau8f128b42014-11-28 15:07:47 +01002461 if (si_f->state == SI_ST_CLO &&
2462 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002463 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002464 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002465 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2466 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002467 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002468 }
2469 }
2470
Willy Tarreau8f128b42014-11-28 15:07:47 +01002471 if (likely((si_f->state != SI_ST_CLO) ||
2472 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002473
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002474 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002475 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002476
Willy Tarreaud14844a2018-11-08 18:15:29 +01002477 si_update_both(si_f, si_b);
Olivier Houchard53216e72018-10-10 15:46:36 +02002478
Willy Tarreaubf89ff32018-11-09 14:59:25 +01002479 if (si_f->state == SI_ST_DIS || si_f->state != si_f->prev_state ||
2480 si_b->state == SI_ST_DIS || si_b->state != si_b->prev_state ||
Willy Tarreau85f89012018-10-25 11:06:57 +02002481 (((req->flags ^ rqf_last) | (res->flags ^ rpf_last)) & CF_MASK_ANALYSER))
Olivier Houchard53216e72018-10-10 15:46:36 +02002482 goto redo;
2483
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002484 /* Trick: if a request is being waiting for the server to respond,
2485 * and if we know the server can timeout, we don't want the timeout
2486 * to expire on the client side first, but we're still interested
2487 * in passing data from the client to the server (eg: POST). Thus,
2488 * we can cancel the client's request timeout if the server's
2489 * request timeout is set and the server has not yet sent a response.
2490 */
2491
Willy Tarreau8f128b42014-11-28 15:07:47 +01002492 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2493 (tick_isset(req->wex) || tick_isset(res->rex))) {
2494 req->flags |= CF_READ_NOEXP;
2495 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002496 }
2497
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002498 /* Reset pending events now */
2499 s->pending_events = 0;
2500
Willy Tarreau798f4322012-11-08 14:49:17 +01002501 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002502 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002503 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2504 tick_first(tick_first(req->rex, req->wex),
2505 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002506 if (!req->analysers)
2507 req->analyse_exp = TICK_ETERNITY;
2508
2509 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2510 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2511 req->analyse_exp = tick_add(now_ms, 5000);
2512
2513 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002514
Willy Tarreau9a398be2017-11-10 17:14:23 +01002515 t->expire = tick_first(t->expire, res->analyse_exp);
2516
Willy Tarreau8f128b42014-11-28 15:07:47 +01002517 if (si_f->exp)
2518 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002519
Willy Tarreau8f128b42014-11-28 15:07:47 +01002520 if (si_b->exp)
2521 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002522
Christopher Faulet56803b12017-11-24 16:06:18 +01002523 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002524 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2525 " 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 +01002526 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2527 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002528
2529#ifdef DEBUG_DEV
2530 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002531 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002532 ABORT_NOW();
2533#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002534 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002535 stream_release_buffers(s);
Olivier Houchardc2aa7112018-09-11 18:27:21 +02002536 /* We may have free'd some space in buffers, or have more to send/recv, try again */
Willy Tarreau26c25062009-03-08 09:38:41 +01002537 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002538 }
2539
Willy Tarreaue7dff022015-04-03 01:14:29 +02002540 if (s->flags & SF_BE_ASSIGNED)
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002541 HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002542
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002543 if (unlikely((global.mode & MODE_DEBUG) &&
2544 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002545 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002546 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002547 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2548 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002549 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002550 }
2551
2552 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002553 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002554
Willy Tarreaueee5b512015-04-03 23:46:31 +02002555 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002556 int n;
2557
Willy Tarreaueee5b512015-04-03 23:46:31 +02002558 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002559 if (n < 1 || n > 5)
2560 n = 0;
2561
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002562 if (sess->fe->mode == PR_MODE_HTTP) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002563 HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002564 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002565 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002566 (s->be->mode == PR_MODE_HTTP)) {
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002567 HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2568 HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002569 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002570 }
2571
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002572 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002573 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002574 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002575 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreau66425e32018-07-25 06:55:12 +02002576 /* we may need to know the position in the queue */
2577 pendconn_free(s);
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002578 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002579 }
2580
Willy Tarreau87b09662015-04-03 00:22:06 +02002581 /* update time stats for this stream */
2582 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002583
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002584 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002585 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002586 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002587 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002588 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002589}
2590
Willy Tarreau87b09662015-04-03 00:22:06 +02002591/* Update the stream's backend and server time stats */
2592void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002593{
2594 int t_request;
2595 int t_queue;
2596 int t_connect;
2597 int t_data;
2598 int t_close;
2599 struct server *srv;
2600
2601 t_request = 0;
2602 t_queue = s->logs.t_queue;
2603 t_connect = s->logs.t_connect;
2604 t_close = s->logs.t_close;
2605 t_data = s->logs.t_data;
2606
2607 if (s->be->mode != PR_MODE_HTTP)
2608 t_data = t_connect;
2609
2610 if (t_connect < 0 || t_data < 0)
2611 return;
2612
2613 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2614 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2615
2616 t_data -= t_connect;
2617 t_connect -= t_queue;
2618 t_queue -= t_request;
2619
2620 srv = objt_server(s->target);
2621 if (srv) {
2622 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2623 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2624 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2625 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2626 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002627 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002628 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2629 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2630 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2631 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002632 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002633}
2634
Willy Tarreau7c669d72008-06-20 15:04:11 +02002635/*
2636 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002637 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002638 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002639 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002640 * server.
2641 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002642void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002643{
2644 if (sess->srv_conn == newsrv)
2645 return;
2646
2647 if (sess->srv_conn) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002648 HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002649 HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002650 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2651 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002652 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002653 }
2654
2655 if (newsrv) {
Christopher Faulet29f77e82017-06-08 14:04:45 +02002656 HA_ATOMIC_ADD(&newsrv->served, 1);
Christopher Fauletff8abcd2017-06-02 15:33:24 +02002657 HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002658 if (newsrv->proxy->lbprm.server_take_conn)
2659 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002660 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002661 }
2662}
2663
Willy Tarreau84455332009-03-15 22:34:05 +01002664/* Handle server-side errors for default protocols. It is called whenever a a
2665 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002666 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002667 * them. It's installed as ->srv_error for the server-side stream_interface.
2668 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002669void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002670{
2671 int err_type = si->err_type;
2672 int err = 0, fin = 0;
2673
2674 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002675 err = SF_ERR_CLICL;
2676 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002677 }
2678 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002679 err = SF_ERR_CLICL;
2680 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002681 }
2682 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002683 err = SF_ERR_SRVTO;
2684 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002685 }
2686 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002687 err = SF_ERR_SRVCL;
2688 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002689 }
2690 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002691 err = SF_ERR_SRVTO;
2692 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002693 }
2694 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002695 err = SF_ERR_SRVCL;
2696 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002697 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002698 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002699 err = SF_ERR_RESOURCE;
2700 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002701 }
Willy Tarreau84455332009-03-15 22:34:05 +01002702 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002703 err = SF_ERR_INTERNAL;
2704 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002705 }
2706
Willy Tarreaue7dff022015-04-03 01:14:29 +02002707 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002708 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002709 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002710 s->flags |= fin;
2711}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002712
Willy Tarreaue7dff022015-04-03 01:14:29 +02002713/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002714void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002715{
Willy Tarreau87b09662015-04-03 00:22:06 +02002716 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002717 return;
2718
Willy Tarreau87b09662015-04-03 00:22:06 +02002719 channel_shutw_now(&stream->req);
2720 channel_shutr_now(&stream->res);
2721 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002722 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002723 stream->flags |= why;
2724 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002725}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002726
Willy Tarreau8b22a712010-06-18 17:46:06 +02002727/************************************************************************/
2728/* All supported ACL keywords must be declared here. */
2729/************************************************************************/
2730
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002731/* 0=OK, <0=Alert, >0=Warning */
2732static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2733 struct proxy *px, struct act_rule *rule,
2734 char **err)
2735{
2736 struct action_kw *kw;
2737
2738 /* Check if the service name exists. */
2739 if (*(args[*cur_arg]) == 0) {
2740 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002741 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002742 }
2743
2744 /* lookup for keyword corresponding to a service. */
2745 kw = action_lookup(&service_keywords, args[*cur_arg]);
2746 if (!kw) {
2747 memprintf(err, "'%s' unknown service name.", args[1]);
2748 return ACT_RET_PRS_ERR;
2749 }
2750 (*cur_arg)++;
2751
2752 /* executes specific rule parser. */
2753 rule->kw = kw;
2754 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2755 return ACT_RET_PRS_ERR;
2756
2757 /* Register processing function. */
2758 rule->action_ptr = process_use_service;
2759 rule->action = ACT_CUSTOM;
2760
2761 return ACT_RET_PRS_OK;
2762}
2763
2764void service_keywords_register(struct action_kw_list *kw_list)
2765{
2766 LIST_ADDQ(&service_keywords, &kw_list->list);
2767}
2768
William Lallemand4c5b4d52016-11-21 08:51:11 +01002769
2770/* This function dumps a complete stream state onto the stream interface's
2771 * read buffer. The stream has to be set in strm. It returns 0 if the output
2772 * buffer is full and it needs to be called again, otherwise non-zero. It is
2773 * designed to be called from stats_dump_strm_to_buffer() below.
2774 */
2775static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2776{
2777 struct appctx *appctx = __objt_appctx(si->end);
2778 struct tm tm;
2779 extern const char *monthname[12];
2780 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002781 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01002782 struct connection *conn;
2783 struct appctx *tmpctx;
2784
2785 chunk_reset(&trash);
2786
2787 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2788 /* stream changed, no need to go any further */
2789 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002790 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01002791 si_rx_room_blk(si);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002792 return 0;
2793 }
2794 appctx->ctx.sess.uid = 0;
2795 appctx->ctx.sess.section = 0;
2796 return 1;
2797 }
2798
2799 switch (appctx->ctx.sess.section) {
2800 case 0: /* main status of the stream */
2801 appctx->ctx.sess.uid = strm->uniq_id;
2802 appctx->ctx.sess.section = 1;
2803 /* fall through */
2804
2805 case 1:
2806 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2807 chunk_appendf(&trash,
2808 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2809 strm,
2810 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2811 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2812 strm->uniq_id,
2813 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2814
2815 conn = objt_conn(strm_orig(strm));
2816 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2817 case AF_INET:
2818 case AF_INET6:
2819 chunk_appendf(&trash, " source=%s:%d\n",
2820 pn, get_host_port(&conn->addr.from));
2821 break;
2822 case AF_UNIX:
2823 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2824 break;
2825 default:
2826 /* no more information to print right now */
2827 chunk_appendf(&trash, "\n");
2828 break;
2829 }
2830
2831 chunk_appendf(&trash,
2832 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2833 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2834
2835 chunk_appendf(&trash,
2836 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2837 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2838 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2839 strm_li(strm) ? strm_li(strm)->luid : 0);
2840
2841 if (conn)
2842 conn_get_to_addr(conn);
2843
2844 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2845 case AF_INET:
2846 case AF_INET6:
2847 chunk_appendf(&trash, " addr=%s:%d\n",
2848 pn, get_host_port(&conn->addr.to));
2849 break;
2850 case AF_UNIX:
2851 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2852 break;
2853 default:
2854 /* no more information to print right now */
2855 chunk_appendf(&trash, "\n");
2856 break;
2857 }
2858
2859 if (strm->be->cap & PR_CAP_BE)
2860 chunk_appendf(&trash,
2861 " backend=%s (id=%u mode=%s)",
2862 strm->be->id,
2863 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2864 else
2865 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2866
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002867 cs = objt_cs(strm->si[1].end);
2868 conn = cs_conn(cs);
2869
William Lallemand4c5b4d52016-11-21 08:51:11 +01002870 if (conn)
2871 conn_get_from_addr(conn);
2872
2873 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2874 case AF_INET:
2875 case AF_INET6:
2876 chunk_appendf(&trash, " addr=%s:%d\n",
2877 pn, get_host_port(&conn->addr.from));
2878 break;
2879 case AF_UNIX:
2880 chunk_appendf(&trash, " addr=unix\n");
2881 break;
2882 default:
2883 /* no more information to print right now */
2884 chunk_appendf(&trash, "\n");
2885 break;
2886 }
2887
2888 if (strm->be->cap & PR_CAP_BE)
2889 chunk_appendf(&trash,
2890 " server=%s (id=%u)",
2891 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2892 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2893 else
2894 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2895
2896 if (conn)
2897 conn_get_to_addr(conn);
2898
2899 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2900 case AF_INET:
2901 case AF_INET6:
2902 chunk_appendf(&trash, " addr=%s:%d\n",
2903 pn, get_host_port(&conn->addr.to));
2904 break;
2905 case AF_UNIX:
2906 chunk_appendf(&trash, " addr=unix\n");
2907 break;
2908 default:
2909 /* no more information to print right now */
2910 chunk_appendf(&trash, "\n");
2911 break;
2912 }
2913
2914 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002915 " task=%p (state=0x%02x nice=%d calls=%d exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002916 strm->task,
2917 strm->task->state,
2918 strm->task->nice, strm->task->calls,
2919 strm->task->expire ?
2920 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2921 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2922 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01002923 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01002924 task_in_rq(strm->task) ? ", running" : "");
2925
2926 chunk_appendf(&trash,
2927 " age=%s)\n",
2928 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2929
2930 if (strm->txn)
2931 chunk_appendf(&trash,
2932 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2933 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02002934 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 +01002935
2936 chunk_appendf(&trash,
2937 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2938 &strm->si[0],
2939 si_state_str(strm->si[0].state),
2940 strm->si[0].flags,
2941 obj_type_name(strm->si[0].end),
2942 obj_base_ptr(strm->si[0].end),
2943 strm->si[0].exp ?
2944 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2945 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2946 TICKS_TO_MS(1000)) : "<NEVER>",
2947 strm->si[0].err_type);
2948
2949 chunk_appendf(&trash,
2950 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2951 &strm->si[1],
2952 si_state_str(strm->si[1].state),
2953 strm->si[1].flags,
2954 obj_type_name(strm->si[1].end),
2955 obj_base_ptr(strm->si[1].end),
2956 strm->si[1].exp ?
2957 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2958 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2959 TICKS_TO_MS(1000)) : "<NEVER>",
2960 strm->si[1].err_type);
2961
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002962 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
2963 conn = cs->conn;
2964
William Lallemand4c5b4d52016-11-21 08:51:11 +01002965 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02002966 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002967 conn,
2968 conn_get_ctrl_name(conn),
2969 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02002970 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002971 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01002972 obj_type_name(conn->target),
2973 obj_base_ptr(conn->target));
2974
2975 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01002976 " 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 +01002977 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002978 conn->handle.fd,
2979 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01002980 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01002981 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01002982 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002983 }
2984 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2985 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002986 " app0=%p st0=%d st1=%d st2=%d applet=%s tmask=0x%lx nice=%d calls=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01002987 tmpctx,
2988 tmpctx->st0,
2989 tmpctx->st1,
2990 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01002991 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02002992 tmpctx->thread_mask,
2993 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002994 }
2995
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002996 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
2997 conn = cs->conn;
2998
William Lallemand4c5b4d52016-11-21 08:51:11 +01002999 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003000 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003001 conn,
3002 conn_get_ctrl_name(conn),
3003 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003004 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003005 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003006 obj_type_name(conn->target),
3007 obj_base_ptr(conn->target));
3008
3009 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01003010 " 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 +01003011 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003012 conn->handle.fd,
3013 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01003014 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003015 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003016 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003017 }
3018 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
3019 chunk_appendf(&trash,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003020 " app1=%p st0=%d st1=%d st2=%d applet=%s tmask=0x%lx, nice=%d, calls=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003021 tmpctx,
3022 tmpctx->st0,
3023 tmpctx->st1,
3024 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003025 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003026 tmpctx->thread_mask,
3027 tmpctx->t->nice, tmpctx->t->calls);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003028 }
3029
3030 chunk_appendf(&trash,
3031 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3032 " an_exp=%s",
3033 &strm->req,
3034 strm->req.flags, strm->req.analysers,
3035 strm->req.pipe ? strm->req.pipe->data : 0,
3036 strm->req.to_forward, strm->req.total,
3037 strm->req.analyse_exp ?
3038 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
3039 TICKS_TO_MS(1000)) : "<NEVER>");
3040
3041 chunk_appendf(&trash,
3042 " rex=%s",
3043 strm->req.rex ?
3044 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
3045 TICKS_TO_MS(1000)) : "<NEVER>");
3046
3047 chunk_appendf(&trash,
3048 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003049 " buf=%p data=%p o=%u p=%u req.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003050 strm->req.wex ?
3051 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
3052 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003053 &strm->req.buf,
3054 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003055 (unsigned int)ci_head_ofs(&strm->req),
Willy Tarreau591d4452018-06-15 17:21:00 +02003056 strm->txn ? strm->txn->req.next : 0, (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003057 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003058
3059 chunk_appendf(&trash,
3060 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3061 " an_exp=%s",
3062 &strm->res,
3063 strm->res.flags, strm->res.analysers,
3064 strm->res.pipe ? strm->res.pipe->data : 0,
3065 strm->res.to_forward, strm->res.total,
3066 strm->res.analyse_exp ?
3067 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
3068 TICKS_TO_MS(1000)) : "<NEVER>");
3069
3070 chunk_appendf(&trash,
3071 " rex=%s",
3072 strm->res.rex ?
3073 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3074 TICKS_TO_MS(1000)) : "<NEVER>");
3075
3076 chunk_appendf(&trash,
3077 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003078 " buf=%p data=%p o=%u p=%u rsp.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003079 strm->res.wex ?
3080 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3081 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003082 &strm->res.buf,
3083 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003084 (unsigned int)ci_head_ofs(&strm->res),
Willy Tarreau591d4452018-06-15 17:21:00 +02003085 strm->txn ? strm->txn->rsp.next : 0, (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003086 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003087
Willy Tarreau06d80a92017-10-19 14:32:15 +02003088 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01003089 si_rx_room_blk(si);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003090 return 0;
3091 }
3092
3093 /* use other states to dump the contents */
3094 }
3095 /* end of dump */
3096 appctx->ctx.sess.uid = 0;
3097 appctx->ctx.sess.section = 0;
3098 return 1;
3099}
3100
3101
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003102static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003103{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003104 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3105 return 1;
3106
3107 if (*args[2] && strcmp(args[2], "all") == 0)
3108 appctx->ctx.sess.target = (void *)-1;
3109 else if (*args[2])
3110 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3111 else
3112 appctx->ctx.sess.target = NULL;
3113 appctx->ctx.sess.section = 0; /* start with stream status */
3114 appctx->ctx.sess.pos = 0;
3115
3116 return 0;
3117}
3118
3119/* This function dumps all streams' states onto the stream interface's
3120 * read buffer. It returns 0 if the output buffer is full and it needs
3121 * to be called again, otherwise non-zero. It is designed to be called
3122 * from stats_dump_sess_to_buffer() below.
3123 */
3124static int cli_io_handler_dump_sess(struct appctx *appctx)
3125{
3126 struct stream_interface *si = appctx->owner;
3127 struct connection *conn;
3128
3129 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3130 /* If we're forced to shut down, we might have to remove our
3131 * reference to the last stream being dumped.
3132 */
3133 if (appctx->st2 == STAT_ST_LIST) {
3134 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3135 LIST_DEL(&appctx->ctx.sess.bref.users);
3136 LIST_INIT(&appctx->ctx.sess.bref.users);
3137 }
3138 }
3139 return 1;
3140 }
3141
3142 chunk_reset(&trash);
3143
3144 switch (appctx->st2) {
3145 case STAT_ST_INIT:
3146 /* the function had not been called yet, let's prepare the
3147 * buffer for a response. We initialize the current stream
3148 * pointer to the first in the global list. When a target
3149 * stream is being destroyed, it is responsible for updating
3150 * this pointer. We know we have reached the end when this
3151 * pointer points back to the head of the streams list.
3152 */
3153 LIST_INIT(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003154 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003155 appctx->ctx.sess.bref.ref = streams.n;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003156 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003157 appctx->st2 = STAT_ST_LIST;
3158 /* fall through */
3159
3160 case STAT_ST_LIST:
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003161 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003162 /* first, let's detach the back-ref from a possible previous stream */
3163 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3164 LIST_DEL(&appctx->ctx.sess.bref.users);
3165 LIST_INIT(&appctx->ctx.sess.bref.users);
3166 }
3167
3168 /* and start from where we stopped */
3169 while (appctx->ctx.sess.bref.ref != &streams) {
3170 char pn[INET6_ADDRSTRLEN];
3171 struct stream *curr_strm;
3172
3173 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3174
3175 if (appctx->ctx.sess.target) {
3176 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3177 goto next_sess;
3178
3179 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3180 /* call the proper dump() function and return if we're missing space */
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003181 if (!stats_dump_full_strm_to_buffer(si, curr_strm)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003182 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003183 return 0;
Emeric Brun6b35e9b2017-06-30 16:23:45 +02003184 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003185
3186 /* stream dump complete */
3187 LIST_DEL(&appctx->ctx.sess.bref.users);
3188 LIST_INIT(&appctx->ctx.sess.bref.users);
3189 if (appctx->ctx.sess.target != (void *)-1) {
3190 appctx->ctx.sess.target = NULL;
3191 break;
3192 }
3193 else
3194 goto next_sess;
3195 }
3196
3197 chunk_appendf(&trash,
3198 "%p: proto=%s",
3199 curr_strm,
3200 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3201
3202 conn = objt_conn(strm_orig(curr_strm));
3203 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3204 case AF_INET:
3205 case AF_INET6:
3206 chunk_appendf(&trash,
3207 " src=%s:%d fe=%s be=%s srv=%s",
3208 pn,
3209 get_host_port(&conn->addr.from),
3210 strm_fe(curr_strm)->id,
3211 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3212 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3213 );
3214 break;
3215 case AF_UNIX:
3216 chunk_appendf(&trash,
3217 " src=unix:%d fe=%s be=%s srv=%s",
3218 strm_li(curr_strm)->luid,
3219 strm_fe(curr_strm)->id,
3220 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3221 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3222 );
3223 break;
3224 }
3225
3226 chunk_appendf(&trash,
3227 " ts=%02x age=%s calls=%d",
3228 curr_strm->task->state,
3229 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3230 curr_strm->task->calls);
3231
3232 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003233 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003234 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003235 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003236 curr_strm->req.analysers,
3237 curr_strm->req.rex ?
3238 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3239 TICKS_TO_MS(1000)) : "");
3240
3241 chunk_appendf(&trash,
3242 ",wx=%s",
3243 curr_strm->req.wex ?
3244 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3245 TICKS_TO_MS(1000)) : "");
3246
3247 chunk_appendf(&trash,
3248 ",ax=%s]",
3249 curr_strm->req.analyse_exp ?
3250 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3251 TICKS_TO_MS(1000)) : "");
3252
3253 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003254 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003255 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003256 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003257 curr_strm->res.analysers,
3258 curr_strm->res.rex ?
3259 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3260 TICKS_TO_MS(1000)) : "");
3261
3262 chunk_appendf(&trash,
3263 ",wx=%s",
3264 curr_strm->res.wex ?
3265 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3266 TICKS_TO_MS(1000)) : "");
3267
3268 chunk_appendf(&trash,
3269 ",ax=%s]",
3270 curr_strm->res.analyse_exp ?
3271 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3272 TICKS_TO_MS(1000)) : "");
3273
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003274 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003275 chunk_appendf(&trash,
3276 " s0=[%d,%1xh,fd=%d,ex=%s]",
3277 curr_strm->si[0].state,
3278 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003279 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003280 curr_strm->si[0].exp ?
3281 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3282 TICKS_TO_MS(1000)) : "");
3283
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003284 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003285 chunk_appendf(&trash,
3286 " s1=[%d,%1xh,fd=%d,ex=%s]",
3287 curr_strm->si[1].state,
3288 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003289 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003290 curr_strm->si[1].exp ?
3291 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3292 TICKS_TO_MS(1000)) : "");
3293
3294 chunk_appendf(&trash,
3295 " exp=%s",
3296 curr_strm->task->expire ?
3297 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3298 TICKS_TO_MS(1000)) : "");
3299 if (task_in_rq(curr_strm->task))
3300 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3301
3302 chunk_appendf(&trash, "\n");
3303
Willy Tarreau06d80a92017-10-19 14:32:15 +02003304 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003305 /* let's try again later from this stream. We add ourselves into
3306 * this stream's users so that it can remove us upon termination.
3307 */
Willy Tarreaudb398432018-11-15 11:08:52 +01003308 si_rx_room_blk(si);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003309 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003310 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003311 return 0;
3312 }
3313
3314 next_sess:
3315 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3316 }
3317
3318 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3319 /* specified stream not found */
3320 if (appctx->ctx.sess.section > 0)
3321 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3322 else
3323 chunk_appendf(&trash, "Session not found.\n");
3324
Willy Tarreau06d80a92017-10-19 14:32:15 +02003325 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01003326 si_rx_room_blk(si);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003327 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003328 return 0;
3329 }
3330
3331 appctx->ctx.sess.target = NULL;
3332 appctx->ctx.sess.uid = 0;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003333 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003334 return 1;
3335 }
3336
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003337 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003338 /* fall through */
3339
3340 default:
3341 appctx->st2 = STAT_ST_FIN;
3342 return 1;
3343 }
3344}
3345
3346static void cli_release_show_sess(struct appctx *appctx)
3347{
3348 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003349 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003350 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3351 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003352 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003353 }
3354}
3355
Willy Tarreau61b65212016-11-24 11:09:25 +01003356/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003357static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003358{
3359 struct stream *strm, *ptr;
3360
3361 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3362 return 1;
3363
3364 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003365 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003366 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003367 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003368 return 1;
3369 }
3370
3371 ptr = (void *)strtoul(args[2], NULL, 0);
3372
3373 /* first, look for the requested stream in the stream table */
3374 list_for_each_entry(strm, &streams, list) {
3375 if (strm == ptr)
3376 break;
3377 }
3378
3379 /* do we have the stream ? */
3380 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003381 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003382 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003383 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003384 return 1;
3385 }
3386
3387 stream_shutdown(strm, SF_ERR_KILLED);
3388 return 1;
3389}
3390
Willy Tarreau4e46b622016-11-23 16:50:48 +01003391/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003392static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003393{
3394 struct server *sv;
3395 struct stream *strm, *strm_bck;
3396
3397 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3398 return 1;
3399
3400 sv = cli_find_server(appctx, args[3]);
3401 if (!sv)
3402 return 1;
3403
3404 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003405 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003406 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3407 if (strm->srv_conn == sv)
3408 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003409 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003410 return 1;
3411}
3412
William Lallemand4c5b4d52016-11-21 08:51:11 +01003413/* register cli keywords */
3414static struct cli_kw_list cli_kws = {{ },{
3415 { { "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 +01003416 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003417 { { "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 +01003418 {{},}
3419}};
3420
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003421/* main configuration keyword registration. */
3422static struct action_kw_list stream_tcp_keywords = { ILH, {
3423 { "use-service", stream_parse_use_service },
3424 { /* END */ }
3425}};
3426
3427static struct action_kw_list stream_http_keywords = { ILH, {
3428 { "use-service", stream_parse_use_service },
3429 { /* END */ }
3430}};
3431
Willy Tarreau8b22a712010-06-18 17:46:06 +02003432__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003433static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003434{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003435 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3436 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003437 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003438}
3439
Willy Tarreaubaaee002006-06-26 02:48:02 +02003440/*
3441 * Local variables:
3442 * c-indent-level: 8
3443 * c-basic-offset: 8
3444 * End:
3445 */