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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>
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +020021#include <common/hathreads.h>
Willy Tarreaub96b77e2018-12-11 10:22:41 +010022#include <common/htx.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010023#include <common/initcall.h>
24#include <common/memory.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020025
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020026#include <types/applet.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020027#include <types/capture.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010028#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020029#include <types/filters.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010030#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010031#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020032
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020033#include <proto/acl.h>
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020034#include <proto/action.h>
Willy Tarreau609aad92018-11-22 08:31:09 +010035#include <proto/activity.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020036#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010037#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020038#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010039#include <proto/checks.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010040#include <proto/cli.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020041#include <proto/connection.h>
Frédéric Lécaille03cdf552019-05-20 10:08:27 +020042#include <proto/dict.h>
Baptiste Assmann333939c2019-01-21 08:34:50 +010043#include <proto/dns.h>
William Lallemand9ed62032016-11-21 17:49:11 +010044#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020045#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020046#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020047#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020048#include <proto/frontend.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010049#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +020050#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020051#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020052#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020053#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020054#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020055#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010056#include <proto/pipe.h>
Christopher Fauletfc9cfe42019-07-16 14:54:53 +020057#include <proto/http_ana.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020058#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020059#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010060#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020061#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010062#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010063#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010064#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010065#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020066#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020067
Willy Tarreau8ceae722018-11-26 11:58:30 +010068DECLARE_POOL(pool_head_stream, "stream", sizeof(struct stream));
69
Willy Tarreaub6b3df32018-11-26 16:31:20 +010070struct list streams = LIST_HEAD_INIT(streams);
Willy Tarreau86abe442018-11-25 20:12:18 +010071__decl_spinlock(streams_lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +020072
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020073/* List of all use-service keywords. */
74static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
75
Willy Tarreau5790eb02017-08-28 17:18:36 +020076
77/* Create a new stream for connection <conn>. Return < 0 on error. This is only
78 * valid right after the handshake, before the connection's data layer is
79 * initialized, because it relies on the session to be in conn->owner.
80 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +020081int stream_create_from_cs(struct conn_stream *cs)
Willy Tarreau5790eb02017-08-28 17:18:36 +020082{
83 struct stream *strm;
84
Olivier Houchard9aaf7782017-09-13 18:30:23 +020085 strm = stream_new(cs->conn->owner, &cs->obj_type);
Willy Tarreau5790eb02017-08-28 17:18:36 +020086 if (strm == NULL)
87 return -1;
88
89 task_wakeup(strm->task, TASK_WOKEN_INIT);
90 return 0;
91}
92
Willy Tarreaub882dd82018-11-06 15:50:21 +010093/* Callback used to wake up a stream when an input buffer is available. The
94 * stream <s>'s stream interfaces are checked for a failed buffer allocation
Willy Tarreaud0f5bbc2018-11-14 11:10:26 +010095 * as indicated by the presence of the SI_FL_RXBLK_ROOM flag and the lack of a
Willy Tarreaub882dd82018-11-06 15:50:21 +010096 * buffer, and and input buffer is assigned there (at most one). The function
97 * returns 1 and wakes the stream up if a buffer was taken, otherwise zero.
98 * It's designed to be called from __offer_buffer().
99 */
100int stream_buf_available(void *arg)
101{
102 struct stream *s = arg;
103
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100104 if (!s->req.buf.size && !s->req.pipe && (s->si[0].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100105 b_alloc_margin(&s->req.buf, global.tune.reserved_bufs))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100106 si_rx_buff_rdy(&s->si[0]);
107 else if (!s->res.buf.size && !s->res.pipe && (s->si[1].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100108 b_alloc_margin(&s->res.buf, 0))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100109 si_rx_buff_rdy(&s->si[1]);
Willy Tarreaub882dd82018-11-06 15:50:21 +0100110 else
111 return 0;
112
113 task_wakeup(s->task, TASK_WOKEN_RES);
114 return 1;
115
116}
117
Willy Tarreau9903f0e2015-04-04 18:50:31 +0200118/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200119 * handshake, in order to complete initialization of a valid stream. It must be
Joseph Herlant4cc8d0d2018-11-15 09:14:14 -0800120 * called with a completely initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200121 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +0200122 * end point is assigned to <origin>, which must be valid. The stream's task
123 * is configured with a nice value inherited from the listener's nice if any.
124 * The task's context is set to the new stream, and its function is set to
125 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +0200126 */
Willy Tarreau87787ac2017-08-28 16:22:54 +0200127struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +0200128{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200129 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200130 struct task *t;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200131 struct conn_stream *cs = objt_cs(origin);
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200132 struct appctx *appctx = objt_appctx(origin);
Christopher Fauletb3484d62018-11-29 15:19:05 +0100133 const struct cs_info *csinfo;
Willy Tarreau2542b532012-08-31 16:01:23 +0200134
Willy Tarreaubafbe012017-11-24 17:34:44 +0100135 if (unlikely((s = pool_alloc(pool_head_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200136 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200137
138 /* minimum stream initialization required for an embryonic stream is
139 * fairly low. We need very little to execute L4 ACLs, then we need a
140 * task to make the client-side connection live on its own.
141 * - flags
142 * - stick-entry tracking
143 */
144 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200145 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200146 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200147 tv_zero(&s->logs.tv_request);
148 s->logs.t_queue = -1;
149 s->logs.t_connect = -1;
150 s->logs.t_data = -1;
151 s->logs.t_close = 0;
152 s->logs.bytes_in = s->logs.bytes_out = 0;
Patrick Hemmerffe5e8c2018-05-11 12:52:31 -0400153 s->logs.prx_queue_pos = 0; /* we get the number of pending conns before us */
154 s->logs.srv_queue_pos = 0; /* we will get this number soon */
Baptiste Assmann333939c2019-01-21 08:34:50 +0100155 s->obj_type = OBJ_TYPE_STREAM;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200156
Christopher Fauletb3484d62018-11-29 15:19:05 +0100157 csinfo = si_get_cs_info(cs);
158 if (csinfo) {
159 s->logs.accept_date = csinfo->create_date;
160 s->logs.tv_accept = csinfo->tv_create;
161 s->logs.t_handshake = csinfo->t_handshake;
162 s->logs.t_idle = csinfo->t_idle;
163 }
164 else {
165 s->logs.accept_date = sess->accept_date;
166 s->logs.tv_accept = sess->tv_accept;
167 s->logs.t_handshake = sess->t_handshake;
168 s->logs.t_idle = -1;
169 }
170
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200171 /* default logging function */
172 s->do_log = strm_log;
173
174 /* default error reporting function, may be changed by analysers */
175 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200176
177 /* Initialise the current rule list pointer to NULL. We are sure that
178 * any rulelist match the NULL pointer.
179 */
180 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200181 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200182
Willy Tarreaua68f7622015-09-21 17:48:24 +0200183 /* Copy SC counters for the stream. We don't touch refcounts because
184 * any reference we have is inherited from the session. Since the stream
185 * doesn't exist without the session, the session's existence guarantees
186 * we don't lose the entry. During the store operation, the stream won't
187 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200188 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200189 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200190
191 s->sess = sess;
192 s->si[0].flags = SI_FL_NONE;
193 s->si[1].flags = SI_FL_ISBACK;
194
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100195 s->uniq_id = _HA_ATOMIC_XADD(&global.req_count, 1);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200196
Willy Tarreau87b09662015-04-03 00:22:06 +0200197 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200198 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100199
200 LIST_INIT(&s->buffer_wait.list);
201 s->buffer_wait.target = s;
Willy Tarreaub882dd82018-11-06 15:50:21 +0100202 s->buffer_wait.wakeup_cb = stream_buf_available;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200203
Willy Tarreau2e9c1d22019-04-24 08:28:31 +0200204 s->call_rate.curr_sec = s->call_rate.curr_ctr = s->call_rate.prev_ctr = 0;
William Lallemandcf62f7e2018-10-26 14:47:40 +0200205 s->pcli_next_pid = 0;
William Lallemandebf61802018-12-11 16:10:57 +0100206 s->pcli_flags = 0;
Willy Tarreau2542b532012-08-31 16:01:23 +0200207 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200208
Emeric Brunc60def82017-09-27 14:59:38 +0200209 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200210 goto out_fail_alloc;
211
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200212 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100213 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200214 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200215 t->context = s;
216 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200217 if (sess->listener)
218 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200219
Willy Tarreau87b09662015-04-03 00:22:06 +0200220 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200221 * This changes later when switching rules are executed or
222 * when the default backend is assigned.
223 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200224 s->be = sess->fe;
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200225 s->req.buf = BUF_NULL;
226 s->res.buf = BUF_NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200227 s->req_cap = NULL;
228 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200229
Willy Tarreauebcd4842015-06-19 11:59:02 +0200230 /* Initialise all the variables contexts even if not used.
231 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200232 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200233 vars_init(&s->vars_txn, SCOPE_TXN);
234 vars_init(&s->vars_reqres, SCOPE_REQ);
235
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200236 /* this part should be common with other protocols */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200237 if (si_reset(&s->si[0]) < 0)
238 goto out_fail_alloc;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200239 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100240 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200241
Christopher Faulet0e160ff2019-04-03 10:01:07 +0200242 if (cs && cs->conn->mux) {
243 if (cs->conn->mux->flags & MX_FL_CLEAN_ABRT)
244 s->si[0].flags |= SI_FL_CLEAN_ABRT;
245 if (cs->conn->mux->flags & MX_FL_HTX)
246 s->flags |= SF_HTX;
247 }
Christopher Faulet3494c632019-07-15 14:58:26 +0200248 /* Set SF_HTX flag for HTTP frontends. */
249 if (sess->fe->mode == PR_MODE_HTTP)
Christopher Faulet0e160ff2019-04-03 10:01:07 +0200250 s->flags |= SF_HTX;
Willy Tarreau984fca92017-12-20 16:31:43 +0100251
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200252 /* attach the incoming connection to the stream interface now. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200253 if (cs)
254 si_attach_cs(&s->si[0], cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200255 else if (appctx)
256 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200257
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200258 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200259 s->si[0].flags |= SI_FL_INDEP_STR;
260
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200261 /* pre-initialize the other side's stream interface to an INIT state. The
262 * callbacks will be initialized before attempting to connect.
263 */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200264 if (si_reset(&s->si[1]) < 0)
265 goto out_fail_alloc_si1;
Hongbo Longe39683c2017-03-10 18:41:51 +0100266 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200267
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200268 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200269 s->si[1].flags |= SI_FL_INDEP_STR;
270
Willy Tarreau87b09662015-04-03 00:22:06 +0200271 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100272 s->target = sess->listener ? sess->listener->default_target : NULL;
Willy Tarreau90420602019-07-18 15:09:57 +0200273 s->target_addr = NULL;
Willy Tarreau9b82d942016-12-05 00:26:31 +0100274
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200275 s->pend_pos = NULL;
Patrick Hemmer268a7072018-05-11 12:52:31 -0400276 s->priority_class = 0;
277 s->priority_offset = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200278
279 /* init store persistence */
280 s->store_count = 0;
281
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100282 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100283 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100284 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaue223e3b2017-11-18 15:39:10 +0100285
286 if (!sess->fe->fe_req_ana) {
287 channel_auto_connect(&s->req); /* don't wait to establish connection */
288 channel_auto_close(&s->req); /* let the producer forward close requests */
289 }
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200290
291 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100292 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100293 s->req.rex = TICK_ETERNITY;
294 s->req.wex = TICK_ETERNITY;
295 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200296
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100297 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100298 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100299 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200300
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200301 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100302 s->req.flags |= CF_NEVER_WAIT;
303 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200304 }
305
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200306 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100307 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100308 s->res.rex = TICK_ETERNITY;
309 s->res.wex = TICK_ETERNITY;
310 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200311
Willy Tarreaueee5b512015-04-03 23:46:31 +0200312 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100313 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100314
Frédéric Lécaillebed883a2019-04-23 17:26:33 +0200315 s->dns_ctx.dns_requester = NULL;
316 s->dns_ctx.hostname_dn = NULL;
317 s->dns_ctx.hostname_dn_len = 0;
318 s->dns_ctx.parent = NULL;
319
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100320 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200321 LIST_ADDQ(&streams, &s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100322 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200323
Christopher Faulet92d36382015-11-05 13:35:03 +0100324 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200325 goto out_fail_accept;
326
Olivier Houcharda254a372019-04-05 15:30:12 +0200327 s->si[1].l7_buffer = BUF_NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200328 /* finish initialization of the accepted file descriptor */
Olivier Houchard53216e72018-10-10 15:46:36 +0200329 if (appctx)
Willy Tarreau0cd3bd62018-11-06 18:46:37 +0100330 si_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200331
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200332 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200333 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200334
335 /* it is important not to call the wakeup function directly but to
336 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200337 * priorities to tasks. Using multi thread we must be sure that
338 * stream is fully initialized before calling task_wakeup. So
339 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200340 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200341 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200342
343 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200344 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100345 flt_stream_release(s, 0);
Olivier Houchard3f795f72019-04-17 22:51:06 +0200346 task_destroy(t);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200347 tasklet_free(s->si[1].wait_event.tasklet);
Willy Tarreaue5f229e2018-10-15 11:08:55 +0200348 LIST_DEL(&s->list);
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200349out_fail_alloc_si1:
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200350 tasklet_free(s->si[0].wait_event.tasklet);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200351 out_fail_alloc:
Willy Tarreaubafbe012017-11-24 17:34:44 +0100352 pool_free(pool_head_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200353 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200354}
355
Willy Tarreaubaaee002006-06-26 02:48:02 +0200356/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200357 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200358 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200359static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200360{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200361 struct session *sess = strm_sess(s);
362 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100363 struct bref *bref, *back;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200364 struct conn_stream *cli_cs = objt_cs(s->si[0].end);
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100365 int must_free_sess;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200366 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100367
Willy Tarreau0ad46fa2019-05-17 14:20:05 +0200368 /* detach the stream from its own task before even releasing it so
369 * that walking over a task list never exhibits a dying stream.
370 */
371 s->task->context = NULL;
372 __ha_barrier_store();
373
Willy Tarreaud0ad4a82018-07-25 11:13:53 +0200374 pendconn_free(s);
Willy Tarreau922a8062008-12-04 09:33:58 +0100375
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100376 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200377 if (s->flags & SF_CURR_SESS) {
378 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100379 _HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1);
Willy Tarreau1e62de62008-11-11 20:20:02 +0100380 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100381 if (may_dequeue_tasks(objt_server(s->target), s->be))
382 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100383 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100384
Willy Tarreau7c669d72008-06-20 15:04:11 +0200385 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200386 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200387 * it should normally be only the same as the one above,
388 * so this should not happen in fact.
389 */
390 sess_change_server(s, NULL);
391 }
392
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100393 if (s->req.pipe)
394 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100395
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100396 if (s->res.pipe)
397 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100398
Willy Tarreaubf883e02014-11-25 21:10:35 +0100399 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100400 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100401 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100402 LIST_DEL(&s->buffer_wait.list);
403 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100404 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100405 }
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200406 if (s->req.buf.size || s->res.buf.size) {
Willy Tarreaue0d0b402019-08-08 08:06:27 +0200407 b_free(&s->req.buf);
408 b_free(&s->res.buf);
Olivier Houchard673867c2018-05-25 16:58:52 +0200409 offer_buffers(NULL, tasks_run_queue);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100410 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200411
Olivier Houchard32211a12019-02-01 18:10:46 +0100412 pool_free(pool_head_uniqueid, s->unique_id);
Willy Tarreau09c4bab2019-02-10 18:49:37 +0100413 s->unique_id = NULL;
Olivier Houchard32211a12019-02-01 18:10:46 +0100414
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100415 hlua_ctx_destroy(s->hlua);
416 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200417 if (s->txn)
418 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100419
Willy Tarreau1e954912012-10-12 17:50:05 +0200420 /* ensure the client-side transport layer is destroyed */
Willy Tarreau32560732017-10-08 11:33:44 +0200421 if (cli_cs)
422 cs_close(cli_cs);
Willy Tarreau1e954912012-10-12 17:50:05 +0200423
Willy Tarreaua4cda672010-06-06 18:28:49 +0200424 for (i = 0; i < s->store_count; i++) {
425 if (!s->store[i].ts)
426 continue;
427 stksess_free(s->store[i].table, s->store[i].ts);
428 s->store[i].ts = NULL;
429 }
430
Willy Tarreaueee5b512015-04-03 23:46:31 +0200431 if (s->txn) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100432 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200433 s->txn = NULL;
434 }
435
Baptiste Assmann333939c2019-01-21 08:34:50 +0100436 if (s->dns_ctx.dns_requester) {
437 free(s->dns_ctx.hostname_dn); s->dns_ctx.hostname_dn = NULL;
438 s->dns_ctx.hostname_dn_len = 0;
439 dns_unlink_resolution(s->dns_ctx.dns_requester);
440
441 pool_free(dns_requester_pool, s->dns_ctx.dns_requester);
442 s->dns_ctx.dns_requester = NULL;
443 }
444
Christopher Fauletd7c91962015-04-30 11:48:27 +0200445 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100446 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200447
Willy Tarreau92fb9832007-10-16 17:34:28 +0200448 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100449 pool_free(fe->rsp_cap_pool, s->res_cap);
450 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200451 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100452
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200453 /* Cleanup all variable contexts. */
Willy Tarreaucda7f3f2018-10-28 13:44:36 +0100454 if (!LIST_ISEMPTY(&s->vars_txn.head))
455 vars_prune(&s->vars_txn, s->sess, s);
456 if (!LIST_ISEMPTY(&s->vars_reqres.head))
457 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200458
Willy Tarreau87b09662015-04-03 00:22:06 +0200459 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200460
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100461 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100462 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100463 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200464 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100465 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100466 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100467 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200468 if (s->list.n != &streams)
469 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100470 bref->ref = s->list.n;
471 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100472 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100473 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200474
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100475 /* applets do not release session yet */
476 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
477
Olivier Houchard4fdec7a2018-10-11 17:09:14 +0200478
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200479 si_release_endpoint(&s->si[1]);
480 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200481
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200482 tasklet_free(s->si[0].wait_event.tasklet);
483 tasklet_free(s->si[1].wait_event.tasklet);
Olivier Houchardd7bd3e32018-10-18 16:22:02 +0200484
Olivier Houcharda254a372019-04-05 15:30:12 +0200485 b_free(&s->si[1].l7_buffer);
Olivier Houchard25607af2018-11-23 14:50:47 +0100486 if (must_free_sess) {
487 sess->origin = NULL;
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100488 session_free(sess);
Olivier Houchard25607af2018-11-23 14:50:47 +0100489 }
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100490
Willy Tarreau90420602019-07-18 15:09:57 +0200491 sockaddr_free(&s->target_addr);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100492 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200493
494 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200495 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100496 pool_flush(pool_head_buffer);
497 pool_flush(pool_head_http_txn);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100498 pool_flush(pool_head_requri);
499 pool_flush(pool_head_capture);
500 pool_flush(pool_head_stream);
501 pool_flush(pool_head_session);
502 pool_flush(pool_head_connection);
503 pool_flush(pool_head_pendconn);
504 pool_flush(fe->req_cap_pool);
505 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200506 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200507}
508
Willy Tarreau656859d2014-11-25 19:46:36 +0100509
Willy Tarreau87b09662015-04-03 00:22:06 +0200510/* Allocates a work buffer for stream <s>. It is meant to be called inside
511 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200512 * to work fine, which is the response buffer so that an error message may be
513 * built and returned. Response buffers may be allocated from the reserve, this
514 * is critical to ensure that a response may always flow and will never block a
515 * server from releasing a connection. Returns 0 in case of failure, non-zero
516 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100517 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100518static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100519{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100520 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100521 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100522 LIST_DEL(&s->buffer_wait.list);
523 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100524 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100525 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100526
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200527 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100528 return 1;
529
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100530 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100531 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100532 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100533 return 0;
534}
535
536/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100537 * update() functions. It will try to wake up as many tasks/applets as the
538 * number of buffers that it releases. In practice, most often streams are
539 * blocked on a single buffer, so it makes sense to try to wake two up when two
540 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100541 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200542void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100543{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100544 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100545
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200546 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100547 offer = 1;
548 b_free(&s->req.buf);
549 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200550 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100551 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100552 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100553 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100554
Willy Tarreaubf883e02014-11-25 21:10:35 +0100555 /* if we're certain to have at least 1 buffer available, and there is
556 * someone waiting, we can wake up a waiter and offer them.
557 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100558 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200559 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100560}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200561
Willy Tarreau87b09662015-04-03 00:22:06 +0200562void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100563{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200564 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100565 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200566 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200567 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100568 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100569
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100570 bytes = s->req.total - s->logs.bytes_in;
571 s->logs.bytes_in = s->req.total;
572 if (bytes) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100573 _HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
574 _HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100575
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100576 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100577 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200578
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200579 if (sess->listener && sess->listener->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100580 _HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200581
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100582 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200583 struct stkctr *stkctr = &s->stkctr[i];
584
Emeric Brun819fc6f2017-06-13 19:37:32 +0200585 ts = stkctr_entry(stkctr);
586 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200587 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200588 ts = stkctr_entry(stkctr);
589 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200590 continue;
591 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200592
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100593 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200594 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200595 if (ptr1)
596 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200597
Emeric Brun819fc6f2017-06-13 19:37:32 +0200598 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200599 if (ptr2)
600 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200601 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100602 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200603
604 /* If data was modified, we need to touch to re-schedule sync */
605 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200606 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100607 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100608 }
609
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100610 bytes = s->res.total - s->logs.bytes_out;
611 s->logs.bytes_out = s->res.total;
612 if (bytes) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100613 _HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
614 _HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100615
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100616 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100617 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200618
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200619 if (sess->listener && sess->listener->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100620 _HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200621
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100622 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200623 struct stkctr *stkctr = &s->stkctr[i];
624
Emeric Brun819fc6f2017-06-13 19:37:32 +0200625 ts = stkctr_entry(stkctr);
626 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200627 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200628 ts = stkctr_entry(stkctr);
629 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200630 continue;
631 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200632
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100633 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200634 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200635 if (ptr1)
636 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200637
Emeric Brun819fc6f2017-06-13 19:37:32 +0200638 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200639 if (ptr2)
640 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200641 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100642 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200643
644 /* If data was modified, we need to touch to re-schedule sync */
645 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200646 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100647 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100648 }
649}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200650
Willy Tarreaud66ed882019-06-05 18:02:04 +0200651/* This function is called with (si->state == SI_ST_CON) meaning that a
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100652 * connection was attempted and that the file descriptor is already allocated.
Willy Tarreaud66ed882019-06-05 18:02:04 +0200653 * We must check for timeout, error and abort. Possible output states are
654 * SI_ST_CER (error), SI_ST_DIS (abort), and SI_ST_CON (no change). This only
655 * works with connection-based streams. We know that there were no I/O event
656 * when reaching this function. Timeouts and errors are *not* cleared.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100657 */
Willy Tarreaud66ed882019-06-05 18:02:04 +0200658static void sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100659{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100660 struct stream_interface *si = &s->si[1];
661 struct channel *req = &s->req;
662 struct channel *rep = &s->res;
Olivier Houchard14547b22018-11-29 18:01:46 +0100663 struct conn_stream *srv_cs = objt_cs(si->end);
Willy Tarreaubf66bd12019-01-23 15:15:09 +0100664 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100665
Willy Tarreaud66ed882019-06-05 18:02:04 +0200666 /* the client might want to abort */
667 if ((rep->flags & CF_SHUTW) ||
668 ((req->flags & CF_SHUTW_NOW) &&
669 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE)))) {
670 si->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200671 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100672 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100673 if (s->srv_error)
674 s->srv_error(s, si);
Willy Tarreaud66ed882019-06-05 18:02:04 +0200675 /* Note: state = SI_ST_DIS now */
676 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100677 }
678
Willy Tarreaud66ed882019-06-05 18:02:04 +0200679 /* retryable error ? */
680 if (si->flags & (SI_FL_EXP|SI_FL_ERR)) {
681 if (!(s->flags & SF_SRV_REUSED) && conn) {
682 conn_stop_tracking(conn);
683 conn_full_close(conn);
684 }
Christopher Faulet7a3367c2019-05-09 11:46:52 +0200685
Willy Tarreaud66ed882019-06-05 18:02:04 +0200686 if (!si->err_type) {
687 if (si->flags & SI_FL_ERR)
688 si->err_type = SI_ET_CONN_ERR;
689 else
690 si->err_type = SI_ET_CONN_TO;
691 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100692
Willy Tarreaud66ed882019-06-05 18:02:04 +0200693 si->state = SI_ST_CER;
694 return;
695 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100696}
697
698/* This function is called with (si->state == SI_ST_CER) meaning that a
699 * previous connection attempt has failed and that the file descriptor
700 * has already been released. Possible causes include asynchronous error
701 * notification and time out. Possible output states are SI_ST_CLO when
702 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
703 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
704 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
Willy Tarreaud66ed882019-06-05 18:02:04 +0200705 * marked as in error state. Timeouts and errors are cleared before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100706 */
Willy Tarreaud66ed882019-06-05 18:02:04 +0200707static void sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100708{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100709 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200710 struct conn_stream *cs = objt_cs(si->end);
711 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100712
Willy Tarreaud66ed882019-06-05 18:02:04 +0200713 si->exp = TICK_ETERNITY;
714 si->flags &= ~SI_FL_EXP;
715
Willy Tarreau87b09662015-04-03 00:22:06 +0200716 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100717 if (objt_server(s->target)) {
718 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100719
Willy Tarreaue7dff022015-04-03 01:14:29 +0200720 if (s->flags & SF_CURR_SESS) {
721 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100722 _HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100723 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200724
725 if ((si->flags & SI_FL_ERR) &&
726 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
727 /* We tried to connect to a server which is configured
728 * with "verify required" and which doesn't have the
729 * "verifyhost" directive. The server presented a wrong
730 * certificate (a certificate for an unexpected name),
731 * which implies that we have used SNI in the handshake,
732 * and that the server doesn't have the associated cert
733 * and presented a default one.
734 *
735 * This is a serious enough issue not to retry. It's
736 * especially important because this wrong name might
737 * either be the result of a configuration error, and
738 * retrying will only hammer the server, or is caused
739 * by the use of a wrong SNI value, most likely
740 * provided by the client and we don't want to let the
741 * client provoke retries.
742 */
743 si->conn_retries = 0;
744 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100745 }
746
747 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200748 si->conn_retries--;
Olivier Houcharda254a372019-04-05 15:30:12 +0200749 if (si->conn_retries < 0 || !(s->be->retry_type & PR_RE_CONN_FAILED)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100750 if (!si->err_type) {
751 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100752 }
753
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100754 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100755 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
756 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100757 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100758 if (may_dequeue_tasks(objt_server(s->target), s->be))
759 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100760
761 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200762 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100763 s->req.flags |= CF_WRITE_ERROR;
764 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100765
766 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100767 if (s->srv_error)
768 s->srv_error(s, si);
Willy Tarreaud66ed882019-06-05 18:02:04 +0200769 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100770 }
771
Olivier Houchard4bd58672019-07-12 16:16:59 +0200772 stream_choose_redispatch(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100773
774 if (si->flags & SI_FL_ERR) {
775 /* The error was an asynchronous connection error, and we will
776 * likely have to retry connecting to the same server, most
777 * likely leading to the same result. To avoid this, we wait
Willy Tarreauf7a259d2019-01-23 16:29:53 +0100778 * MIN(one second, connect timeout) before retrying. We don't
779 * do it when the failure happened on a reused connection
780 * though.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100781 */
782
Willy Tarreaub0290662014-06-13 17:04:44 +0200783 int delay = 1000;
784
785 if (s->be->timeout.connect && s->be->timeout.connect < delay)
786 delay = s->be->timeout.connect;
787
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100788 if (!si->err_type)
789 si->err_type = SI_ET_CONN_ERR;
790
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200791 /* only wait when we're retrying on the same server */
Willy Tarreauf7a259d2019-01-23 16:29:53 +0100792 if ((si->state == SI_ST_ASS ||
793 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
794 (s->be->srv_act <= 1)) && !(s->flags & SF_SRV_REUSED)) {
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200795 si->state = SI_ST_TAR;
796 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
797 }
Olivier Houchard39cc0202019-04-09 19:12:51 +0200798 si->flags &= ~SI_FL_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100799 }
Willy Tarreaud66ed882019-06-05 18:02:04 +0200800}
801
802/* This function is called with (si->state == SI_ST_RDY) meaning that a
803 * connection was attempted, that the file descriptor is already allocated,
804 * and that it has succeeded. We must still check for errors and aborts.
805 * Possible output states are SI_ST_EST (established), SI_ST_CER (error),
806 * and SI_ST_DIS (abort). This only works with connection-based streams.
807 * Timeouts and errors are *not* cleared.
808 */
809static void sess_update_st_rdy_tcp(struct stream *s)
810{
811 struct stream_interface *si = &s->si[1];
812 struct channel *req = &s->req;
813 struct channel *rep = &s->res;
814 struct conn_stream *srv_cs = objt_cs(si->end);
815 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
816
817 /* We know the connection at least succeeded, though it could have
818 * since met an error for any other reason. At least it didn't time out
819 * eventhough the timeout might have been reported right after success.
820 * We need to take care of various situations here :
821 * - everything might be OK. We have to switch to established.
822 * - an I/O error might have been reported after a successful transfer,
823 * which is not retryable and needs to be logged correctly, and needs
824 * established as well
825 * - SI_ST_CON implies !CF_WROTE_DATA but not conversely as we could
826 * have validated a connection with incoming data (e.g. TCP with a
827 * banner protocol), or just a successful connect() probe.
828 * - the client might have requested a connection abort, this needs to
829 * be checked before we decide to retry anything.
830 */
831
832 /* it's still possible to handle client aborts or connection retries
833 * before any data were sent.
834 */
835 if (!(req->flags & CF_WROTE_DATA)) {
836 /* client abort ? */
837 if ((rep->flags & CF_SHUTW) ||
838 ((req->flags & CF_SHUTW_NOW) &&
839 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE)))) {
840 /* give up */
841 si->flags |= SI_FL_NOLINGER;
842 si_shutw(si);
843 si->err_type |= SI_ET_CONN_ABRT;
844 if (s->srv_error)
845 s->srv_error(s, si);
846 return;
847 }
848
849 /* retryable error ? */
850 if (si->flags & SI_FL_ERR) {
851 if (!(s->flags & SF_SRV_REUSED) && conn) {
852 conn_stop_tracking(conn);
853 conn_full_close(conn);
854 }
855
856 if (!si->err_type)
857 si->err_type = SI_ET_CONN_ERR;
858 si->state = SI_ST_CER;
859 return;
860 }
861 }
862
863 /* data were sent and/or we had no error, sess_establish() will
864 * now take over.
865 */
866 si->err_type = SI_ET_NONE;
867 si->state = SI_ST_EST;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100868}
869
870/*
871 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200872 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau4f283fa2019-06-05 14:34:03 +0200873 * SI_ST_INI or SI_ST_RDY) to SI_ST_EST, but only when a ->proto is defined.
Olivier Houchardaacc4052019-05-21 17:43:50 +0200874 * Note that it will switch the interface to SI_ST_DIS if we already have
875 * the CF_SHUTR flag, it means we were able to forward the request, and
876 * receive the response, before process_stream() had the opportunity to
877 * make the switch from SI_ST_CON to SI_ST_EST. When that happens, we want
878 * to go through sess_establish() anyway, to make sure the analysers run.
Willy Tarreaud66ed882019-06-05 18:02:04 +0200879 * Timeouts are cleared. Error are reported on the channel so that analysers
880 * can handle them.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100881 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200882static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100883{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100884 struct stream_interface *si = &s->si[1];
Willy Tarreaud66ed882019-06-05 18:02:04 +0200885 struct conn_stream *srv_cs = objt_cs(si->end);
886 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100887 struct channel *req = &s->req;
888 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100889
Willy Tarreaud66ed882019-06-05 18:02:04 +0200890 /* First, centralize the timers information, and clear any irrelevant
891 * timeout.
892 */
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100893 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud66ed882019-06-05 18:02:04 +0200894 si->exp = TICK_ETERNITY;
895 si->flags &= ~SI_FL_EXP;
896
897 /* errors faced after sending data need to be reported */
898 if (si->flags & SI_FL_ERR && req->flags & CF_WROTE_DATA) {
899 /* Don't add CF_WRITE_ERROR if we're here because
900 * early data were rejected by the server, or
901 * http_wait_for_response() will never be called
902 * to send a 425.
903 */
904 if (conn && conn->err_code != CO_ER_SSL_EARLY_FAILED)
905 req->flags |= CF_WRITE_ERROR;
906 rep->flags |= CF_READ_ERROR;
907 si->err_type = SI_ET_DATA_ERR;
908 }
909
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100910 if (objt_server(s->target))
911 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100912
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100913 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100914 /* if the user wants to log as soon as possible, without counting
915 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200916 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau66425e32018-07-25 06:55:12 +0200917 /* note: no pend_pos here, session is established */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100918 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100919 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100920 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100921 }
922 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100923 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100924 }
925
Willy Tarreau0007d0a2018-12-11 18:01:38 +0100926 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100927
Willy Tarreau0007d0a2018-12-11 18:01:38 +0100928 /* Be sure to filter response headers if the backend is an HTTP proxy
929 * and if there are filters attached to the stream. */
930 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
931 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +0100932
Willy Tarreau8bb2ffb2018-11-14 17:54:13 +0100933 si_rx_endp_more(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200934 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200935 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200936 /* real connections have timeouts */
937 req->wto = s->be->timeout.server;
938 rep->rto = s->be->timeout.server;
Olivier Houchard47e9a1a2018-11-07 17:55:19 +0100939 /* The connection is now established, try to read data from the
940 * underlying layer, and subscribe to recv events. We use a
941 * delayed recv here to give a chance to the data to flow back
942 * by the time we process other tasks.
943 */
944 si_chk_rcv(si);
Willy Tarreaud04e8582010-05-31 12:31:35 +0200945 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100946 req->wex = TICK_ETERNITY;
Olivier Houchard78595262019-07-26 14:54:34 +0200947 /* If we managed to get the whole response, and we don't have anything
948 * left to send, or can't, switch to SI_ST_DIS now. */
949 if (rep->flags & (CF_SHUTR | CF_SHUTW))
Olivier Houchardaacc4052019-05-21 17:43:50 +0200950 si->state = SI_ST_DIS;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100951}
952
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700953/* Check if the connection request is in such a state that it can be aborted. */
954static int check_req_may_abort(struct channel *req, struct stream *s)
955{
956 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100957 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Christopher Faulet769d0e92019-03-22 14:23:18 +0100958 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700959}
960
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100961/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
962 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100963 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
964 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
965 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100966 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200967static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100968{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100969 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100970 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100971 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100972
Christopher Faulet45073512018-07-20 10:16:29 +0200973 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 +0100974 now_ms, __FUNCTION__,
975 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400976 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100977 req->rex, s->res.wex,
978 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200979 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 +0100980
981 if (si->state == SI_ST_ASS) {
982 /* Server assigned to connection request, we have to try to connect now */
983 int conn_err;
984
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700985 /* Before we try to initiate the connection, see if the
986 * request may be aborted instead.
987 */
988 if (check_req_may_abort(req, s)) {
989 si->err_type |= SI_ET_CONN_ABRT;
990 goto abort_connection;
991 }
992
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100993 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100994 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100995
Willy Tarreaue7dff022015-04-03 01:14:29 +0200996 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100997 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100998 if (srv)
999 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -05001000 if (srv)
1001 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001002 return;
1003 }
1004
1005 /* We have received a synchronous error. We might have to
1006 * abort, retry immediately or redispatch.
1007 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001008 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001009 if (!si->err_type) {
1010 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001011 }
1012
Willy Tarreau827aee92011-03-10 16:55:02 +01001013 if (srv)
1014 srv_inc_sess_ctr(srv);
1015 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -05001016 srv_set_sess_last(srv);
1017 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001018 _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
1019 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001020
Willy Tarreau87b09662015-04-03 00:22:06 +02001021 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +01001022 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001023 if (may_dequeue_tasks(srv, s->be))
1024 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001025
1026 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001027 si_shutr(si);
1028 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001029 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001030
1031 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1032
Willy Tarreau66425e32018-07-25 06:55:12 +02001033 /* we may need to know the position in the queue for logging */
1034 pendconn_cond_unlink(s->pend_pos);
1035
Willy Tarreau87b09662015-04-03 00:22:06 +02001036 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001037 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001038 if (s->srv_error)
1039 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001040 return;
1041 }
1042
1043 /* We are facing a retryable error, but we don't want to run a
1044 * turn-around now, as the problem is likely a source port
1045 * allocation problem, so we want to retry now.
1046 */
1047 si->state = SI_ST_CER;
1048 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001049 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001050 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
1051 return;
1052 }
1053 else if (si->state == SI_ST_QUE) {
1054 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +01001055 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001056 /* The connection is not in the queue anymore. Either
1057 * we have a server connection slot available and we
1058 * go directly to the assigned state, or we need to
1059 * load-balance first and go to the INI state.
1060 */
1061 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001062 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001063 si->state = SI_ST_REQ;
1064 else {
1065 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1066 si->state = SI_ST_ASS;
1067 }
1068 return;
1069 }
1070
1071 /* Connection request still in queue... */
1072 if (si->flags & SI_FL_EXP) {
1073 /* ... and timeout expired */
1074 si->exp = TICK_ETERNITY;
Willy Tarreaud66ed882019-06-05 18:02:04 +02001075 si->flags &= ~SI_FL_EXP;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001076 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001077
1078 /* we may need to know the position in the queue for logging */
1079 pendconn_cond_unlink(s->pend_pos);
1080
Willy Tarreau827aee92011-03-10 16:55:02 +01001081 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001082 _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
1083 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +02001084 si_shutr(si);
1085 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001086 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001087 if (!si->err_type)
1088 si->err_type = SI_ET_QUEUE_TO;
1089 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001090 if (s->srv_error)
1091 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001092 return;
1093 }
1094
1095 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001096 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001097 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001098
1099 /* we may need to know the position in the queue for logging */
1100 pendconn_cond_unlink(s->pend_pos);
1101
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001102 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001103 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001104 }
1105
1106 /* Nothing changed */
1107 return;
1108 }
1109 else if (si->state == SI_ST_TAR) {
1110 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001111 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001112 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001113 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001114 }
1115
1116 if (!(si->flags & SI_FL_EXP))
1117 return; /* still in turn-around */
1118
Olivier Houchard86dcad62019-04-09 19:17:41 +02001119 si->flags &= ~SI_FL_EXP;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001120 si->exp = TICK_ETERNITY;
1121
Willy Tarreau87b09662015-04-03 00:22:06 +02001122 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001123 * marked "assigned".
1124 * FIXME: Should we force a redispatch attempt when the server is down ?
1125 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001126 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001127 si->state = SI_ST_ASS;
1128 else
1129 si->state = SI_ST_REQ;
1130 return;
1131 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001132 return;
1133
1134abort_connection:
1135 /* give up */
1136 si->exp = TICK_ETERNITY;
Willy Tarreaud66ed882019-06-05 18:02:04 +02001137 si->flags &= ~SI_FL_EXP;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001138 si_shutr(si);
1139 si_shutw(si);
1140 si->state = SI_ST_CLO;
1141 if (s->srv_error)
1142 s->srv_error(s, si);
1143 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001144}
1145
Willy Tarreau87b09662015-04-03 00:22:06 +02001146/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001147 * also counts a failed request if the server state has not reached the request
1148 * stage.
1149 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001150static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001151{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001152 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02001153 if (s->si[1].state == SI_ST_INI) {
1154 /* anything before REQ in fact */
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001155 _HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001156 if (strm_li(s) && strm_li(s)->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001157 _HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001158
Willy Tarreaue7dff022015-04-03 01:14:29 +02001159 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001160 }
1161 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001162 s->flags |= SF_FINST_Q;
Willy Tarreau4f283fa2019-06-05 14:34:03 +02001163 else if (si_state_in(s->si[1].state, SI_SB_REQ|SI_SB_TAR|SI_SB_ASS|SI_SB_CON|SI_SB_CER|SI_SB_RDY))
Willy Tarreaue7dff022015-04-03 01:14:29 +02001164 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001165 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001166 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001167 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001168 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001169 }
1170}
1171
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001172/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001173 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1174 * a real connection to a server, indicating that a server has been assigned,
1175 * or SI_ST_EST for a successful connection to an applet. It may also return
1176 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001177 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001178static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001179{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001180 struct stream_interface *si = &s->si[1];
1181
Christopher Faulet45073512018-07-20 10:16:29 +02001182 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 +01001183 now_ms, __FUNCTION__,
1184 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001185 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001186 s->req.rex, s->res.wex,
1187 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001188 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 +01001189
1190 if (si->state != SI_ST_REQ)
1191 return;
1192
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001193 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1194 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001195 struct appctx *appctx = objt_appctx(si->end);
1196
1197 if (!appctx || appctx->applet != __objt_applet(s->target))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001198 appctx = si_register_handler(si, objt_applet(s->target));
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001199
1200 if (!appctx) {
1201 /* No more memory, let's immediately abort. Force the
1202 * error code to ignore the ERR_LOCAL which is not a
1203 * real error.
1204 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001205 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001206
1207 si_shutr(si);
1208 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001209 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001210 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001211 si->state = SI_ST_CLO;
1212 if (s->srv_error)
1213 s->srv_error(s, si);
1214 return;
1215 }
1216
Willy Tarreauee8269e2017-11-23 17:34:29 +01001217 if (tv_iszero(&s->logs.tv_request))
1218 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001219 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001220 si->state = SI_ST_EST;
1221 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001222 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001223 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001224 return;
1225 }
1226
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001227 /* Try to assign a server */
1228 if (srv_redispatch_connect(s) != 0) {
1229 /* We did not get a server. Either we queued the
1230 * connection request, or we encountered an error.
1231 */
1232 if (si->state == SI_ST_QUE)
1233 return;
1234
1235 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001236 si_shutr(si);
1237 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001238 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001239 if (!si->err_type)
1240 si->err_type = SI_ET_CONN_OTHER;
1241 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001242 if (s->srv_error)
1243 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001244 return;
1245 }
1246
1247 /* The server is assigned */
1248 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1249 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001250 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001251}
1252
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001253/* This function parses the use-service action ruleset. It executes
1254 * the associated ACL and set an applet as a stream or txn final node.
1255 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1256 * consistent state. It returns ACT_RET_STOP in succes case because
1257 * use-service must be a terminal action. Returns ACT_RET_YIELD
1258 * if the initialisation function require more data.
1259 */
1260enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1261 struct session *sess, struct stream *s, int flags)
1262
1263{
1264 struct appctx *appctx;
1265
1266 /* Initialises the applet if it is required. */
1267 if (flags & ACT_FLAG_FIRST) {
1268 /* Register applet. this function schedules the applet. */
1269 s->target = &rule->applet.obj_type;
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001270 if (unlikely(!si_register_handler(&s->si[1], objt_applet(s->target))))
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001271 return ACT_RET_ERR;
1272
1273 /* Initialise the context. */
1274 appctx = si_appctx(&s->si[1]);
1275 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1276 appctx->rule = rule;
1277 }
1278 else
1279 appctx = si_appctx(&s->si[1]);
1280
1281 /* Stops the applet sheduling, in case of the init function miss
1282 * some data.
1283 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001284 si_stop_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001285
1286 /* Call initialisation. */
1287 if (rule->applet.init)
1288 switch (rule->applet.init(appctx, px, s)) {
1289 case 0: return ACT_RET_ERR;
1290 case 1: break;
1291 default: return ACT_RET_YIELD;
1292 }
1293
Christopher Faulet2571bc62019-03-01 11:44:26 +01001294 if (rule->from != ACT_F_HTTP_REQ) {
1295 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
1296 _HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
1297
1298 /* The flag SF_ASSIGNED prevent from server assignment. */
1299 s->flags |= SF_ASSIGNED;
1300 }
1301
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001302 /* Now we can schedule the applet. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001303 si_cant_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001304 appctx_wakeup(appctx);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001305 return ACT_RET_STOP;
1306}
1307
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001308/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001309 * if appropriate. The default_backend rule is also considered, then the
1310 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001311 * It returns 1 if the processing can continue on next analysers, or zero if it
1312 * either needs more data or wants to immediately abort the request.
1313 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001314static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001315{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001316 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001317 struct session *sess = s->sess;
1318 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001319
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001320 req->analysers &= ~an_bit;
1321 req->analyse_exp = TICK_ETERNITY;
1322
Christopher Faulet45073512018-07-20 10:16:29 +02001323 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 +02001324 now_ms, __FUNCTION__,
1325 s,
1326 req,
1327 req->rex, req->wex,
1328 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001329 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001330 req->analysers);
1331
1332 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001333 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001334 struct switching_rule *rule;
1335
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001336 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001337 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001338
Willy Tarreauf51658d2014-04-23 01:21:56 +02001339 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001340 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001341 ret = acl_pass(ret);
1342 if (rule->cond->pol == ACL_COND_UNLESS)
1343 ret = !ret;
1344 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001345
1346 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001347 /* If the backend name is dynamic, try to resolve the name.
1348 * If we can't resolve the name, or if any error occurs, break
1349 * the loop and fallback to the default backend.
1350 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001351 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001352
1353 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001354 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001355
1356 tmp = alloc_trash_chunk();
1357 if (!tmp)
1358 goto sw_failed;
1359
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001360 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1361 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001362
1363 free_trash_chunk(tmp);
1364 tmp = NULL;
1365
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001366 if (!backend)
1367 break;
1368 }
1369 else
1370 backend = rule->be.backend;
1371
Willy Tarreau87b09662015-04-03 00:22:06 +02001372 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001373 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001374 break;
1375 }
1376 }
1377
1378 /* To ensure correct connection accounting on the backend, we
1379 * have to assign one if it was not set (eg: a listen). This
1380 * measure also takes care of correctly setting the default
1381 * backend if any.
1382 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001383 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001384 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001385 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001386 }
1387
Willy Tarreaufb356202010-08-03 14:02:05 +02001388 /* 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 +02001389 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001390 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1391 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001392 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001393 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001394
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001395 /* 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 +02001396 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001397 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001398 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001399 int ret = 1;
1400
1401 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001402 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 +01001403 ret = acl_pass(ret);
1404 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1405 ret = !ret;
1406 }
1407
1408 if (ret) {
1409 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001410 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001411 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001412 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001413 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001414 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001415 break;
1416 }
1417 }
1418
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001419 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001420
1421 sw_failed:
1422 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001423 channel_abort(&s->req);
1424 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001425
Willy Tarreaue7dff022015-04-03 01:14:29 +02001426 if (!(s->flags & SF_ERR_MASK))
1427 s->flags |= SF_ERR_RESOURCE;
1428 if (!(s->flags & SF_FINST_MASK))
1429 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001430
Willy Tarreaueee5b512015-04-03 23:46:31 +02001431 if (s->txn)
1432 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001433 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001434 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001435 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001436}
1437
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001438/* This stream analyser works on a request. It applies all use-server rules on
1439 * it then returns 1. The data must already be present in the buffer otherwise
1440 * they won't match. It always returns 1.
1441 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001442static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001443{
1444 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001445 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001446 struct server_rule *rule;
1447
Christopher Faulet45073512018-07-20 10:16:29 +02001448 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 +02001449 now_ms, __FUNCTION__,
1450 s,
1451 req,
1452 req->rex, req->wex,
1453 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001454 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001455 req->analysers);
1456
Willy Tarreaue7dff022015-04-03 01:14:29 +02001457 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001458 list_for_each_entry(rule, &px->server_rules, list) {
1459 int ret;
1460
Willy Tarreau192252e2015-04-04 01:47:55 +02001461 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001462 ret = acl_pass(ret);
1463 if (rule->cond->pol == ACL_COND_UNLESS)
1464 ret = !ret;
1465
1466 if (ret) {
1467 struct server *srv = rule->srv.ptr;
1468
Emeric Brun52a91d32017-08-31 14:41:55 +02001469 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001470 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001471 (s->flags & SF_FORCE_PRST)) {
1472 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001473 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001474 break;
1475 }
1476 /* if the server is not UP, let's go on with next rules
1477 * just in case another one is suited.
1478 */
1479 }
1480 }
1481 }
1482
1483 req->analysers &= ~an_bit;
1484 req->analyse_exp = TICK_ETERNITY;
1485 return 1;
1486}
1487
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001488static inline void sticking_rule_find_target(struct stream *s,
1489 struct stktable *t, struct stksess *ts)
1490{
1491 struct proxy *px = s->be;
1492 struct eb32_node *node;
1493 struct dict_entry *de;
1494 void *ptr;
1495 struct server *srv;
1496
1497 /* Look for the server name previously stored in <t> stick-table */
1498 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
1499 ptr = __stktable_data_ptr(t, ts, STKTABLE_DT_SERVER_NAME);
1500 de = stktable_data_cast(ptr, server_name);
1501 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
1502
1503 if (de) {
1504 struct ebpt_node *name;
1505
1506 name = ebis_lookup(&px->conf.used_server_name, de->value.key);
1507 if (name) {
1508 srv = container_of(name, struct server, conf.name);
1509 goto found;
1510 }
1511 }
1512
1513 /* Look for the server ID */
1514 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
1515 ptr = __stktable_data_ptr(t, ts, STKTABLE_DT_SERVER_ID);
1516 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
1517 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
1518
1519 if (!node)
1520 return;
1521
1522 srv = container_of(node, struct server, conf.id);
1523 found:
1524 if ((srv->cur_state != SRV_ST_STOPPED) ||
1525 (px->options & PR_O_PERSIST) || (s->flags & SF_FORCE_PRST)) {
1526 s->flags |= SF_DIRECT | SF_ASSIGNED;
1527 s->target = &srv->obj_type;
1528 }
1529}
1530
Emeric Brun1d33b292010-01-04 15:47:17 +01001531/* This stream analyser works on a request. It applies all sticking rules on
1532 * it then returns 1. The data must already be present in the buffer otherwise
1533 * they won't match. It always returns 1.
1534 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001535static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001536{
1537 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001538 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001539 struct sticking_rule *rule;
1540
Christopher Faulet45073512018-07-20 10:16:29 +02001541 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001542 now_ms, __FUNCTION__,
1543 s,
1544 req,
1545 req->rex, req->wex,
1546 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001547 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001548 req->analysers);
1549
1550 list_for_each_entry(rule, &px->sticking_rules, list) {
1551 int ret = 1 ;
1552 int i;
1553
Willy Tarreau9667a802013-12-09 12:52:13 +01001554 /* Only the first stick store-request of each table is applied
1555 * and other ones are ignored. The purpose is to allow complex
1556 * configurations which look for multiple entries by decreasing
1557 * order of precision and to stop at the first which matches.
1558 * An example could be a store of the IP address from an HTTP
1559 * header first, then from the source if not found.
1560 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001561 for (i = 0; i < s->store_count; i++) {
1562 if (rule->table.t == s->store[i].table)
1563 break;
1564 }
1565
1566 if (i != s->store_count)
1567 continue;
1568
1569 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001570 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001571 ret = acl_pass(ret);
1572 if (rule->cond->pol == ACL_COND_UNLESS)
1573 ret = !ret;
1574 }
1575
1576 if (ret) {
1577 struct stktable_key *key;
1578
Willy Tarreau192252e2015-04-04 01:47:55 +02001579 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 +01001580 if (!key)
1581 continue;
1582
1583 if (rule->flags & STK_IS_MATCH) {
1584 struct stksess *ts;
1585
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001586 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001587 if (!(s->flags & SF_ASSIGNED))
1588 sticking_rule_find_target(s, rule->table.t, ts);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001589 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001590 }
1591 }
1592 if (rule->flags & STK_IS_STORE) {
1593 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1594 struct stksess *ts;
1595
1596 ts = stksess_new(rule->table.t, key);
1597 if (ts) {
1598 s->store[s->store_count].table = rule->table.t;
1599 s->store[s->store_count++].ts = ts;
1600 }
1601 }
1602 }
1603 }
1604 }
1605
1606 req->analysers &= ~an_bit;
1607 req->analyse_exp = TICK_ETERNITY;
1608 return 1;
1609}
1610
1611/* This stream analyser works on a response. It applies all store rules on it
1612 * then returns 1. The data must already be present in the buffer otherwise
1613 * they won't match. It always returns 1.
1614 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001615static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001616{
1617 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001618 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001619 struct sticking_rule *rule;
1620 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001621 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001622
Christopher Faulet45073512018-07-20 10:16:29 +02001623 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 +01001624 now_ms, __FUNCTION__,
1625 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001626 rep,
1627 rep->rex, rep->wex,
1628 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001629 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001630 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001631
1632 list_for_each_entry(rule, &px->storersp_rules, list) {
1633 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001634
Willy Tarreau9667a802013-12-09 12:52:13 +01001635 /* Only the first stick store-response of each table is applied
1636 * and other ones are ignored. The purpose is to allow complex
1637 * configurations which look for multiple entries by decreasing
1638 * order of precision and to stop at the first which matches.
1639 * An example could be a store of a set-cookie value, with a
1640 * fallback to a parameter found in a 302 redirect.
1641 *
1642 * The store-response rules are not allowed to override the
1643 * store-request rules for the same table, but they may coexist.
1644 * Thus we can have up to one store-request entry and one store-
1645 * response entry for the same table at any time.
1646 */
1647 for (i = nbreq; i < s->store_count; i++) {
1648 if (rule->table.t == s->store[i].table)
1649 break;
1650 }
1651
1652 /* skip existing entries for this table */
1653 if (i < s->store_count)
1654 continue;
1655
Emeric Brun1d33b292010-01-04 15:47:17 +01001656 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001657 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001658 ret = acl_pass(ret);
1659 if (rule->cond->pol == ACL_COND_UNLESS)
1660 ret = !ret;
1661 }
1662
1663 if (ret) {
1664 struct stktable_key *key;
1665
Willy Tarreau192252e2015-04-04 01:47:55 +02001666 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 +01001667 if (!key)
1668 continue;
1669
Willy Tarreau37e340c2013-12-06 23:05:21 +01001670 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001671 struct stksess *ts;
1672
1673 ts = stksess_new(rule->table.t, key);
1674 if (ts) {
1675 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001676 s->store[s->store_count++].ts = ts;
1677 }
1678 }
1679 }
1680 }
1681
1682 /* process store request and store response */
1683 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001684 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001685 void *ptr;
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001686 struct dict_entry *de;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001687
Willy Tarreauc93cd162014-05-13 15:54:22 +02001688 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001689 stksess_free(s->store[i].table, s->store[i].ts);
1690 s->store[i].ts = NULL;
1691 continue;
1692 }
1693
Emeric Brun819fc6f2017-06-13 19:37:32 +02001694 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1695 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001696 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001697 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001698 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001699 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001700
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001701 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001702 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
1703 stktable_data_cast(ptr, server_id) = __objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001704 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001705
1706 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
1707 de = dict_insert(&server_name_dict, __objt_server(s->target)->id);
1708 if (de) {
1709 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_NAME);
1710 stktable_data_cast(ptr, server_name) = de;
1711 }
1712 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
1713
Emeric Brun819fc6f2017-06-13 19:37:32 +02001714 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001715 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001716 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001717
1718 rep->analysers &= ~an_bit;
1719 rep->analyse_exp = TICK_ETERNITY;
1720 return 1;
1721}
1722
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001723/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001724 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001725 */
1726#define UPDATE_ANALYSERS(real, list, back, flag) { \
1727 list = (((list) & ~(flag)) | ~(back)) & (real); \
1728 back = real; \
1729 if (!(list)) \
1730 break; \
1731 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1732 continue; \
1733}
1734
Christopher Fauleta9215b72016-05-11 17:06:28 +02001735/* These 2 following macros call an analayzer for the specified channel if the
1736 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001737 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001738 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001739 * AN_REQ/RES_HTTP_XFER_BODY) */
1740#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1741 { \
1742 if ((list) & (flag)) { \
1743 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001744 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001745 break; \
1746 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1747 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001748 if (!flt_post_analyze((strm), (chn), (flag))) \
1749 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001750 } \
1751 else { \
1752 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1753 break; \
1754 } \
1755 UPDATE_ANALYSERS((chn)->analysers, (list), \
1756 (back), (flag)); \
1757 } \
1758 }
1759
1760#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1761 { \
1762 if ((list) & (flag)) { \
1763 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1764 break; \
1765 UPDATE_ANALYSERS((chn)->analysers, (list), \
1766 (back), (flag)); \
1767 } \
1768 }
1769
Willy Tarreau87b09662015-04-03 00:22:06 +02001770/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001771 * then puts it back to the wait queue in a clean state, or cleans up its
1772 * resources if it must be deleted. Returns in <next> the date the task wants
1773 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1774 * nothing too many times, the request and response buffers flags are monitored
1775 * and each function is called only if at least another function has changed at
1776 * least one flag it is interested in.
1777 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001778struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001779{
Willy Tarreau827aee92011-03-10 16:55:02 +01001780 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001781 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001782 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001783 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001784 unsigned int rq_prod_last, rq_cons_last;
1785 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001786 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001787 struct channel *req, *res;
1788 struct stream_interface *si_f, *si_b;
Willy Tarreau3d07a162019-04-25 19:15:20 +02001789 unsigned int rate;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001790
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001791 activity[tid].stream++;
1792
Willy Tarreau8f128b42014-11-28 15:07:47 +01001793 req = &s->req;
1794 res = &s->res;
1795
1796 si_f = &s->si[0];
1797 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001798
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001799 /* First, attempt to receive pending data from I/O layers */
Willy Tarreauade64782018-11-17 19:51:07 +01001800 si_sync_recv(si_f);
1801 si_sync_recv(si_b);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001802
Willy Tarreau3d07a162019-04-25 19:15:20 +02001803 rate = update_freq_ctr(&s->call_rate, 1);
1804 if (rate >= 100000 && s->call_rate.prev_ctr) { // make sure to wait at least a full second
1805 stream_dump_and_crash(&s->obj_type, read_freq_ctr(&s->call_rate));
1806 }
Olivier Houchardc2aa7112018-09-11 18:27:21 +02001807
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001808 //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 +01001809 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001810
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001811 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001812 if (s->txn)
1813 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001814
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001815 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001816 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1817 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001818
1819 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001820 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1821 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001822
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001823 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001824 si_f->flags |= SI_FL_DONT_WAKE;
1825 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001826
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001827 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001828 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001829
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001830 /* 1a: Check for low level timeouts if needed. We just set a flag on
1831 * stream interfaces when their timeouts have expired.
1832 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001833 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001834 si_check_timeouts(si_f);
1835 si_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001836
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001837 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001838 * for future reads or writes. Note: this will also concern upper layers
1839 * but we do not touch any other flag. We must be careful and correctly
1840 * detect state changes when calling them.
1841 */
1842
Willy Tarreau8f128b42014-11-28 15:07:47 +01001843 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001844
Willy Tarreau8f128b42014-11-28 15:07:47 +01001845 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1846 si_b->flags |= SI_FL_NOLINGER;
1847 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001848 }
1849
Willy Tarreau8f128b42014-11-28 15:07:47 +01001850 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1851 if (si_f->flags & SI_FL_NOHALF)
1852 si_f->flags |= SI_FL_NOLINGER;
1853 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001854 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001855
Willy Tarreau8f128b42014-11-28 15:07:47 +01001856 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001857
Willy Tarreau8f128b42014-11-28 15:07:47 +01001858 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1859 si_f->flags |= SI_FL_NOLINGER;
1860 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001861 }
1862
Willy Tarreau8f128b42014-11-28 15:07:47 +01001863 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1864 if (si_b->flags & SI_FL_NOHALF)
1865 si_b->flags |= SI_FL_NOLINGER;
1866 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001867 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001868
Christopher Fauleta00d8172016-11-10 14:58:05 +01001869 if (HAS_FILTERS(s))
1870 flt_stream_check_timeouts(s);
1871
Willy Tarreau798f4322012-11-08 14:49:17 +01001872 /* Once in a while we're woken up because the task expires. But
1873 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001874 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001875 * timeout needs to be refreshed.
1876 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001877 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001878 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Willy Tarreauede3d882018-10-24 17:17:56 +02001879 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001880 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001881 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001882 si_f->flags &= ~SI_FL_DONT_WAKE;
1883 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001884 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001885 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001886 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001887
Willy Tarreau829bd472019-06-06 09:17:23 +02001888 resync_stream_interface:
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001889 /* below we may emit error messages so we have to ensure that we have
1890 * our buffers properly allocated.
1891 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001892 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001893 /* No buffer available, we've been subscribed to the list of
1894 * buffer waiters, let's wait for our turn.
1895 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001896 si_f->flags &= ~SI_FL_DONT_WAKE;
1897 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001898 goto update_exp_and_leave;
1899 }
1900
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001901 /* 1b: check for low-level errors reported at the stream interface.
1902 * First we check if it's a retryable error (in which case we don't
1903 * want to tell the buffer). Otherwise we report the error one level
1904 * upper by setting flags into the buffers. Note that the side towards
1905 * the client cannot have connect (hence retryable) errors. Also, the
1906 * connection setup code must be able to deal with any type of abort.
1907 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001908 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001909 if (unlikely(si_f->flags & SI_FL_ERR)) {
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02001910 if (si_state_in(si_f->state, SI_SB_EST|SI_SB_DIS)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001911 si_shutr(si_f);
1912 si_shutw(si_f);
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001913 si_report_error(si_f);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001914 if (!(req->analysers) && !(res->analysers)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001915 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1916 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001917 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001918 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001919 if (!(s->flags & SF_ERR_MASK))
1920 s->flags |= SF_ERR_CLICL;
1921 if (!(s->flags & SF_FINST_MASK))
1922 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001923 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001924 }
1925 }
1926
Willy Tarreau8f128b42014-11-28 15:07:47 +01001927 if (unlikely(si_b->flags & SI_FL_ERR)) {
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02001928 if (si_state_in(si_b->state, SI_SB_EST|SI_SB_DIS)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001929 si_shutr(si_b);
1930 si_shutw(si_b);
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001931 si_report_error(si_b);
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001932 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001933 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001934 _HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001935 if (!(req->analysers) && !(res->analysers)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001936 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1937 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001938 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001939 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001940 if (!(s->flags & SF_ERR_MASK))
1941 s->flags |= SF_ERR_SRVCL;
1942 if (!(s->flags & SF_FINST_MASK))
1943 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001944 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001945 }
1946 /* note: maybe we should process connection errors here ? */
1947 }
1948
Willy Tarreau4f283fa2019-06-05 14:34:03 +02001949 if (si_state_in(si_b->state, SI_SB_CON|SI_SB_RDY)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001950 /* we were trying to establish a connection on the server side,
1951 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1952 */
Willy Tarreaud66ed882019-06-05 18:02:04 +02001953 if (si_b->state == SI_ST_RDY)
1954 sess_update_st_rdy_tcp(s);
1955 else if (si_b->state == SI_ST_CON)
1956 sess_update_st_con_tcp(s);
1957
1958 if (si_b->state == SI_ST_CER)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001959 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001960 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001961 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001962
1963 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1964 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1965 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1966 */
1967 }
1968
Willy Tarreau8f128b42014-11-28 15:07:47 +01001969 rq_prod_last = si_f->state;
1970 rq_cons_last = si_b->state;
1971 rp_cons_last = si_f->state;
1972 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001973
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001974 /* Check for connection closure */
1975
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001976 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001977 "[%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 +01001978 now_ms, __FUNCTION__, __LINE__,
1979 t,
1980 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001981 req, res,
1982 req->rex, res->wex,
1983 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001984 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 +01001985 si_f->err_type, si_b->err_type,
1986 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001987
1988 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001989 if (unlikely(si_f->state == SI_ST_DIS))
1990 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001991
1992 /* When a server-side connection is released, we have to count it and
1993 * check for pending connections on this server.
1994 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001995 if (unlikely(si_b->state == SI_ST_DIS)) {
1996 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001997 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001998 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001999 if (s->flags & SF_CURR_SESS) {
2000 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002001 _HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002002 }
2003 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01002004 if (may_dequeue_tasks(srv, s->be))
2005 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002006 }
2007 }
2008
2009 /*
2010 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
2011 * at this point.
2012 */
2013
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002014 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002015 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002016 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
2017 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002018 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002019 si_f->state != rq_prod_last ||
2020 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002021 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002022 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002023
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002024 if (si_state_in(si_f->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO)) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002025 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002026 unsigned int ana_list;
2027 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002028
Willy Tarreau90deb182010-01-07 00:20:41 +01002029 /* it's up to the analysers to stop new connections,
2030 * disable reading or closing. Note: if an analyser
2031 * disables any of these bits, it is responsible for
2032 * enabling them again when it disables itself, so
2033 * that other analysers are called in similar conditions.
2034 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002035 channel_auto_read(req);
2036 channel_auto_connect(req);
2037 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01002038
2039 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002040 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01002041 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002042 * the list when not needed. Any analyser may return 0
2043 * to break out of the loop, either because of missing
2044 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002045 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002046 * analyser, and we may loop again if other analysers
2047 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002048 *
2049 * We build a list of analysers to run. We evaluate all
2050 * of these analysers in the order of the lower bit to
2051 * the higher bit. This ordering is very important.
2052 * An analyser will often add/remove other analysers,
2053 * including itself. Any changes to itself have no effect
2054 * on the loop. If it removes any other analysers, we
2055 * want those analysers not to be called anymore during
2056 * this loop. If it adds an analyser that is located
2057 * after itself, we want it to be scheduled for being
2058 * processed during the loop. If it adds an analyser
2059 * which is located before it, we want it to switch to
2060 * it immediately, even if it has already been called
2061 * once but removed since.
2062 *
2063 * In order to achieve this, we compare the analyser
2064 * list after the call with a copy of it before the
2065 * call. The work list is fed with analyser bits that
2066 * appeared during the call. Then we compare previous
2067 * work list with the new one, and check the bits that
2068 * appeared. If the lowest of these bits is lower than
2069 * the current bit, it means we have enabled a previous
2070 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01002071 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002072
Willy Tarreau8f128b42014-11-28 15:07:47 +01002073 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002074 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002075 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002076 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002077 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002078 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
2079 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
2080 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002081 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002082 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002083 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002084 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
2085 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002086 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002087 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002088 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
2089 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002090 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002091 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002092 ANALYZE (s, req, pcli_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002093 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
2094 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002095 break;
2096 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002097 }
Willy Tarreau84455332009-03-15 22:34:05 +01002098
Willy Tarreau8f128b42014-11-28 15:07:47 +01002099 rq_prod_last = si_f->state;
2100 rq_cons_last = si_b->state;
2101 req->flags &= ~CF_WAKE_ONCE;
2102 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002103
Willy Tarreau1ec9bb52019-06-06 14:45:26 +02002104 if ((req->flags ^ flags) & (CF_SHUTR|CF_SHUTW))
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002105 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002106 }
2107
Willy Tarreau576507f2010-01-07 00:09:04 +01002108 /* we'll monitor the request analysers while parsing the response,
2109 * because some response analysers may indirectly enable new request
2110 * analysers (eg: HTTP keep-alive).
2111 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002112 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01002113
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002114 resync_response:
2115 /* Analyse response */
2116
Willy Tarreau8f128b42014-11-28 15:07:47 +01002117 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
2118 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002119 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002120 si_f->state != rp_cons_last ||
2121 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002122 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002123 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002124
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002125 if (si_state_in(si_b->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO)) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002126 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002127 unsigned int ana_list;
2128 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002129
Willy Tarreau90deb182010-01-07 00:20:41 +01002130 /* it's up to the analysers to stop disable reading or
2131 * closing. Note: if an analyser disables any of these
2132 * bits, it is responsible for enabling them again when
2133 * it disables itself, so that other analysers are called
2134 * in similar conditions.
2135 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002136 channel_auto_read(res);
2137 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002138
2139 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002140 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002141 * to MSB. The analysers must remove themselves from
2142 * the list when not needed. Any analyser may return 0
2143 * to break out of the loop, either because of missing
2144 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002145 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002146 * analyser, and we may loop again if other analysers
2147 * are added in the middle.
2148 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002149
Willy Tarreau8f128b42014-11-28 15:07:47 +01002150 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002151 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002152 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002153 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
2154 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002155 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002156 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002157 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002158 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 +01002159 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002160 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002161 ANALYZE (s, res, pcli_wait_for_response, ana_list, ana_back, AN_RES_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002162 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
2163 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002164 break;
2165 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002166 }
2167
Willy Tarreau8f128b42014-11-28 15:07:47 +01002168 rp_cons_last = si_f->state;
2169 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02002170 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002171 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002172
Willy Tarreau1ec9bb52019-06-06 14:45:26 +02002173 if ((res->flags ^ flags) & (CF_SHUTR|CF_SHUTW))
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002174 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002175 }
2176
Willy Tarreau576507f2010-01-07 00:09:04 +01002177 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002178 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002179 goto resync_request;
2180
Willy Tarreau8f128b42014-11-28 15:07:47 +01002181 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002182 goto resync_request;
2183
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002184 /* FIXME: here we should call protocol handlers which rely on
2185 * both buffers.
2186 */
2187
2188
2189 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002190 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002191 * we're just in a data phase here since it means we have not
2192 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002193 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002194 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002195 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002196 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002197 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002198 req->analysers = 0;
2199 if (req->flags & CF_READ_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002200 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2201 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002202 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002203 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002204 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002205 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002206 else if (req->flags & CF_READ_TIMEOUT) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002207 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2208 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002209 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002210 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002211 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002212 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002213 else if (req->flags & CF_WRITE_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002214 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2215 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002216 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002217 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002218 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002219 }
2220 else {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002221 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2222 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002223 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002224 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002225 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002226 }
Willy Tarreau84455332009-03-15 22:34:05 +01002227 sess_set_term_flags(s);
Christopher Faulet5e1a9d72019-04-23 17:34:22 +02002228
2229 /* Abort the request if a client error occurred while
2230 * the backend stream-interface is in the SI_ST_INI
2231 * state. It is switched into the SI_ST_CLO state and
2232 * the request channel is erased. */
2233 if (si_b->state == SI_ST_INI) {
2234 si_b->state = SI_ST_CLO;
2235 channel_abort(req);
2236 if (IS_HTX_STRM(s))
2237 channel_htx_erase(req, htxbuf(&req->buf));
2238 else
2239 channel_erase(req);
2240 }
Willy Tarreau84455332009-03-15 22:34:05 +01002241 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002242 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002243 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002244 res->analysers = 0;
2245 if (res->flags & CF_READ_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002246 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2247 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002248 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002249 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002250 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002251 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002252 else if (res->flags & CF_READ_TIMEOUT) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002253 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2254 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002255 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002256 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002257 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002258 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002259 else if (res->flags & CF_WRITE_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002260 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2261 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002262 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002263 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002264 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002265 }
2266 else {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002267 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2268 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002269 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002270 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002271 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002272 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002273 sess_set_term_flags(s);
2274 }
Willy Tarreau84455332009-03-15 22:34:05 +01002275 }
2276
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002277 /*
2278 * Here we take care of forwarding unhandled data. This also includes
2279 * connection establishments and shutdown requests.
2280 */
2281
2282
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002283 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002284 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002285 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002286 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002287 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002288 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002289 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002290 (si_state_in(si_f->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002291 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002292 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002293 * attached to it. If any data are left in, we'll permit them to
2294 * move.
2295 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002296 channel_auto_read(req);
2297 channel_auto_connect(req);
2298 channel_auto_close(req);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002299
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002300 if (IS_HTX_STRM(s)) {
2301 struct htx *htx = htxbuf(&req->buf);
2302
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002303 /* We'll let data flow between the producer (if still connected)
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002304 * to the consumer.
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002305 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002306 co_set_data(req, htx->data);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002307 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002308 channel_htx_forward_forever(req, htx);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002309 }
2310 else {
2311 /* We'll let data flow between the producer (if still connected)
2312 * to the consumer (which might possibly not be connected yet).
2313 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002314 c_adv(req, ci_data(req));
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002315 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
2316 channel_forward_forever(req);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002317 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002318 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002319
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002320 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002321 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2322 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002323 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002324 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2325 (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 +01002326 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002327 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2328 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002329 (req->flags & CF_STREAMER_FAST)))) {
2330 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002331 }
2332
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002333 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002334 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002335
Willy Tarreau520d95e2009-09-19 21:04:57 +02002336 /* it's possible that an upper layer has requested a connection setup or abort.
2337 * There are 2 situations where we decide to establish a new connection :
2338 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002339 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002340 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002341 if (si_b->state == SI_ST_INI) {
Christopher Faulet5e1a9d72019-04-23 17:34:22 +02002342 if (!(req->flags & CF_SHUTW)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002343 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002344 /* If we have an appctx, there is no connect method, so we
2345 * immediately switch to the connected state, otherwise we
2346 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002347 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002348 si_b->state = SI_ST_REQ; /* new connection requested */
2349 si_b->conn_retries = s->be->conn_retries;
Olivier Houchard602bf7d2019-05-10 13:59:15 +02002350 if ((s->be->retry_type &~ PR_RE_CONN_FAILED) &&
2351 !(si_b->flags & SI_FL_D_L7_RETRY))
Olivier Houcharda254a372019-04-05 15:30:12 +02002352 si_b->flags |= SI_FL_L7_RETRY;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002353 }
Willy Tarreau73201222009-08-16 18:27:24 +02002354 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002355 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002356 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002357 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2358 channel_shutw_now(req); /* fix buffer flags upon abort */
2359 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002360 }
Willy Tarreau92795622009-03-06 12:51:23 +01002361 }
2362
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002363
2364 /* we may have a pending connection request, or a connection waiting
2365 * for completion.
2366 */
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002367 if (si_state_in(si_b->state, SI_SB_REQ|SI_SB_QUE|SI_SB_TAR|SI_SB_ASS)) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002368 /* prune the request variables and swap to the response variables. */
2369 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreaucda7f3f2018-10-28 13:44:36 +01002370 if (!LIST_ISEMPTY(&s->vars_reqres.head)) {
2371 vars_prune(&s->vars_reqres, s->sess, s);
2372 vars_init(&s->vars_reqres, SCOPE_RES);
2373 }
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002374 }
2375
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002376 do {
2377 /* nb: step 1 might switch from QUE to ASS, but we first want
2378 * to give a chance to step 2 to perform a redirect if needed.
2379 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002380 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002381 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002382 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002383 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002384
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002385 /* applets directly go to the ESTABLISHED state. Similarly,
2386 * servers experience the same fate when their connection
2387 * is reused.
2388 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002389 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002390 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002391
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002392 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002393 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002394 http_perform_server_redirect(s, si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002395 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002396 }
2397
Willy Tarreau829bd472019-06-06 09:17:23 +02002398 /* Let's see if we can send the pending request now */
2399 si_sync_send(si_b);
2400
2401 /*
2402 * Now forward all shutdown requests between both sides of the request buffer
2403 */
2404
2405 /* first, let's check if the request buffer needs to shutdown(write), which may
2406 * happen either because the input is closed or because we want to force a close
2407 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2408 * the other side's timeout as well.
2409 */
2410 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
2411 (CF_AUTO_CLOSE|CF_SHUTR))) {
2412 channel_shutw_now(req);
2413 }
2414
2415 /* shutdown(write) pending */
2416 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2417 channel_is_empty(req))) {
2418 if (req->flags & CF_READ_ERROR)
2419 si_b->flags |= SI_FL_NOLINGER;
2420 si_shutw(si_b);
2421 }
2422
2423 /* shutdown(write) done on server side, we must stop the client too */
2424 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2425 !req->analysers))
2426 channel_shutr_now(req);
2427
2428 /* shutdown(read) pending */
2429 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2430 if (si_f->flags & SI_FL_NOHALF)
2431 si_f->flags |= SI_FL_NOLINGER;
2432 si_shutr(si_f);
2433 }
2434
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002435 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau829bd472019-06-06 09:17:23 +02002436 if (si_f->state == SI_ST_DIS ||
2437 si_state_in(si_b->state, SI_SB_RDY|SI_SB_DIS) ||
2438 (si_f->flags & SI_FL_ERR && si_f->state != SI_ST_CLO) ||
2439 (si_b->flags & SI_FL_ERR && si_b->state != SI_ST_CLO))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002440 goto resync_stream_interface;
2441
Willy Tarreau815a9b22010-07-27 17:15:12 +02002442 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau1ec9bb52019-06-06 14:45:26 +02002443 if ((req->flags ^ rqf_last) & (CF_SHUTR|CF_SHUTW))
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002444 goto resync_request;
2445
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002446 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002447
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002448 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002449 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002450 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002451 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002452 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002453 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002454 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002455 si_state_in(si_b->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002456 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002457 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002458 * attached to it. If any data are left in, we'll permit them to
2459 * move.
2460 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002461 channel_auto_read(res);
2462 channel_auto_close(res);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002463
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002464 if (IS_HTX_STRM(s)) {
2465 struct htx *htx = htxbuf(&res->buf);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002466
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002467 /* We'll let data flow between the producer (if still connected)
2468 * to the consumer.
2469 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002470 co_set_data(res, htx->data);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002471 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002472 channel_htx_forward_forever(res, htx);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002473 }
2474 else {
2475 /* We'll let data flow between the producer (if still connected)
2476 * to the consumer.
2477 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002478 c_adv(res, ci_data(res));
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002479 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
2480 channel_forward_forever(res);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002481 }
Willy Tarreau42529c32015-07-09 18:38:57 +02002482
Willy Tarreauce887fd2012-05-12 12:50:00 +02002483 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002484 * tunnel timeout set, use it now. Note that we must respect
2485 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002486 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002487 if (!req->analysers && s->be->timeout.tunnel) {
2488 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002489 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002490
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002491 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2492 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002493 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2494 res->rto = s->be->timeout.serverfin;
2495 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2496 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002497 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2498 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002499
Willy Tarreau8f128b42014-11-28 15:07:47 +01002500 req->rex = tick_add(now_ms, req->rto);
2501 req->wex = tick_add(now_ms, req->wto);
2502 res->rex = tick_add(now_ms, res->rto);
2503 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002504 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002505 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002506
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002507 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002508 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2509 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002510 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002511 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2512 (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 +01002513 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002514 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2515 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002516 (res->flags & CF_STREAMER_FAST)))) {
2517 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002518 }
2519
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002520 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002521 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002522
Willy Tarreau829bd472019-06-06 09:17:23 +02002523 /* Let's see if we can send the pending response now */
2524 si_sync_send(si_f);
2525
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002526 /*
2527 * Now forward all shutdown requests between both sides of the buffer
2528 */
2529
2530 /*
2531 * FIXME: this is probably where we should produce error responses.
2532 */
2533
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002534 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002535 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002536 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002537 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002538 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002539
2540 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002541 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2542 channel_is_empty(res))) {
2543 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002544 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002545
2546 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002547 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2548 !res->analysers)
2549 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002550
2551 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002552 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2553 if (si_b->flags & SI_FL_NOHALF)
2554 si_b->flags |= SI_FL_NOLINGER;
2555 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002556 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002557
Willy Tarreau829bd472019-06-06 09:17:23 +02002558 if (si_f->state == SI_ST_DIS ||
2559 si_state_in(si_b->state, SI_SB_RDY|SI_SB_DIS) ||
2560 (si_f->flags & SI_FL_ERR && si_f->state != SI_ST_CLO) ||
2561 (si_b->flags & SI_FL_ERR && si_b->state != SI_ST_CLO))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002562 goto resync_stream_interface;
2563
Willy Tarreau3c5c0662019-06-06 14:32:49 +02002564 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002565 goto resync_request;
2566
Willy Tarreau8f128b42014-11-28 15:07:47 +01002567 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002568 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002569
Willy Tarreau829bd472019-06-06 09:17:23 +02002570 if (((req->flags ^ rqf_last) | (res->flags ^ rpf_last)) & CF_MASK_ANALYSER)
2571 goto resync_request;
2572
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002573 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002574 si_f->flags &= ~SI_FL_DONT_WAKE;
2575 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002576
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002577 /* This is needed only when debugging is enabled, to indicate
2578 * client-side or server-side close. Please note that in the unlikely
2579 * event where both sides would close at once, the sequence is reported
2580 * on the server side first.
2581 */
2582 if (unlikely((global.mode & MODE_DEBUG) &&
2583 (!(global.mode & MODE_QUIET) ||
2584 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002585 if (si_b->state == SI_ST_CLO &&
2586 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002587 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002588 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002589 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2590 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002591 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002592 }
2593
Willy Tarreau8f128b42014-11-28 15:07:47 +01002594 if (si_f->state == SI_ST_CLO &&
2595 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002596 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002597 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002598 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2599 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002600 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002601 }
2602 }
2603
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002604 if (likely((si_f->state != SI_ST_CLO) || !si_state_in(si_b->state, SI_SB_INI|SI_SB_CLO))) {
Olivier Houchard4c18f942019-07-31 18:05:26 +02002605 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) && !(s->flags & SF_IGNORE))
Willy Tarreau87b09662015-04-03 00:22:06 +02002606 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002607
Willy Tarreaud14844a2018-11-08 18:15:29 +01002608 si_update_both(si_f, si_b);
Olivier Houchard53216e72018-10-10 15:46:36 +02002609
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002610 /* Trick: if a request is being waiting for the server to respond,
2611 * and if we know the server can timeout, we don't want the timeout
2612 * to expire on the client side first, but we're still interested
2613 * in passing data from the client to the server (eg: POST). Thus,
2614 * we can cancel the client's request timeout if the server's
2615 * request timeout is set and the server has not yet sent a response.
2616 */
2617
Willy Tarreau8f128b42014-11-28 15:07:47 +01002618 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2619 (tick_isset(req->wex) || tick_isset(res->rex))) {
2620 req->flags |= CF_READ_NOEXP;
2621 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002622 }
2623
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002624 /* Reset pending events now */
2625 s->pending_events = 0;
2626
Willy Tarreau798f4322012-11-08 14:49:17 +01002627 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002628 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002629 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2630 tick_first(tick_first(req->rex, req->wex),
2631 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002632 if (!req->analysers)
2633 req->analyse_exp = TICK_ETERNITY;
2634
2635 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2636 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2637 req->analyse_exp = tick_add(now_ms, 5000);
2638
2639 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002640
Willy Tarreau9a398be2017-11-10 17:14:23 +01002641 t->expire = tick_first(t->expire, res->analyse_exp);
2642
Willy Tarreau8f128b42014-11-28 15:07:47 +01002643 if (si_f->exp)
2644 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002645
Willy Tarreau8f128b42014-11-28 15:07:47 +01002646 if (si_b->exp)
2647 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002648
Christopher Faulet56803b12017-11-24 16:06:18 +01002649 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002650 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2651 " 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 +01002652 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2653 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002654
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002655 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002656 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002657 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002658 }
2659
Willy Tarreaue7dff022015-04-03 01:14:29 +02002660 if (s->flags & SF_BE_ASSIGNED)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002661 _HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002662
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002663 if (unlikely((global.mode & MODE_DEBUG) &&
2664 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002665 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002666 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002667 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2668 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002669 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002670 }
2671
2672 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Olivier Houchard4c18f942019-07-31 18:05:26 +02002673 if (!(s->flags & SF_IGNORE))
2674 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002675
Willy Tarreaueee5b512015-04-03 23:46:31 +02002676 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002677 int n;
2678
Willy Tarreaueee5b512015-04-03 23:46:31 +02002679 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002680 if (n < 1 || n > 5)
2681 n = 0;
2682
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002683 if (sess->fe->mode == PR_MODE_HTTP) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002684 _HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002685 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002686 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002687 (s->be->mode == PR_MODE_HTTP)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002688 _HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2689 _HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002690 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002691 }
2692
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002693 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002694 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002695 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002696 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreau66425e32018-07-25 06:55:12 +02002697 /* we may need to know the position in the queue */
2698 pendconn_free(s);
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002699 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002700 }
2701
Willy Tarreau87b09662015-04-03 00:22:06 +02002702 /* update time stats for this stream */
2703 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002704
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002705 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002706 stream_free(s);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002707 task_destroy(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002708 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002709}
2710
Willy Tarreau87b09662015-04-03 00:22:06 +02002711/* Update the stream's backend and server time stats */
2712void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002713{
2714 int t_request;
2715 int t_queue;
2716 int t_connect;
2717 int t_data;
2718 int t_close;
2719 struct server *srv;
2720
2721 t_request = 0;
2722 t_queue = s->logs.t_queue;
2723 t_connect = s->logs.t_connect;
2724 t_close = s->logs.t_close;
2725 t_data = s->logs.t_data;
2726
2727 if (s->be->mode != PR_MODE_HTTP)
2728 t_data = t_connect;
2729
2730 if (t_connect < 0 || t_data < 0)
2731 return;
2732
2733 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2734 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2735
2736 t_data -= t_connect;
2737 t_connect -= t_queue;
2738 t_queue -= t_request;
2739
2740 srv = objt_server(s->target);
2741 if (srv) {
2742 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2743 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2744 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2745 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2746 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002747 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002748 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2749 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2750 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2751 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002752 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002753}
2754
Willy Tarreau7c669d72008-06-20 15:04:11 +02002755/*
2756 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002757 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002758 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002759 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002760 * server.
2761 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002762void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002763{
2764 if (sess->srv_conn == newsrv)
2765 return;
2766
2767 if (sess->srv_conn) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002768 _HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
2769 _HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
2770 __ha_barrier_atomic_store();
Willy Tarreau7c669d72008-06-20 15:04:11 +02002771 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2772 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002773 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002774 }
2775
2776 if (newsrv) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002777 _HA_ATOMIC_ADD(&newsrv->served, 1);
2778 _HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
2779 __ha_barrier_atomic_store();
Willy Tarreau7c669d72008-06-20 15:04:11 +02002780 if (newsrv->proxy->lbprm.server_take_conn)
2781 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002782 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002783 }
2784}
2785
Willy Tarreau84455332009-03-15 22:34:05 +01002786/* Handle server-side errors for default protocols. It is called whenever a a
2787 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002788 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002789 * them. It's installed as ->srv_error for the server-side stream_interface.
2790 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002791void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002792{
2793 int err_type = si->err_type;
2794 int err = 0, fin = 0;
2795
2796 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002797 err = SF_ERR_CLICL;
2798 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002799 }
2800 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002801 err = SF_ERR_CLICL;
2802 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002803 }
2804 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002805 err = SF_ERR_SRVTO;
2806 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002807 }
2808 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002809 err = SF_ERR_SRVCL;
2810 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002811 }
2812 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002813 err = SF_ERR_SRVTO;
2814 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002815 }
2816 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002817 err = SF_ERR_SRVCL;
2818 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002819 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002820 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002821 err = SF_ERR_RESOURCE;
2822 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002823 }
Willy Tarreau84455332009-03-15 22:34:05 +01002824 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002825 err = SF_ERR_INTERNAL;
2826 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002827 }
2828
Willy Tarreaue7dff022015-04-03 01:14:29 +02002829 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002830 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002831 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002832 s->flags |= fin;
2833}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002834
Willy Tarreaue7dff022015-04-03 01:14:29 +02002835/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002836void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002837{
Willy Tarreau87b09662015-04-03 00:22:06 +02002838 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002839 return;
2840
Willy Tarreau87b09662015-04-03 00:22:06 +02002841 channel_shutw_now(&stream->req);
2842 channel_shutr_now(&stream->res);
2843 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002844 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002845 stream->flags |= why;
2846 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002847}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002848
Willy Tarreau5484d582019-05-22 09:33:03 +02002849/* Appends a dump of the state of stream <s> into buffer <buf> which must have
2850 * preliminary be prepared by its caller, with each line prepended by prefix
2851 * <pfx>, and each line terminated by character <eol>.
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002852 */
Willy Tarreau5484d582019-05-22 09:33:03 +02002853void stream_dump(struct buffer *buf, const struct stream *s, const char *pfx, char eol)
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002854{
2855 const struct conn_stream *csf, *csb;
2856 const struct connection *cof, *cob;
2857 const struct appctx *acf, *acb;
2858 const struct server *srv;
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002859 const char *src = "unknown";
2860 const char *dst = "unknown";
2861 char pn[INET6_ADDRSTRLEN];
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002862 const struct channel *req, *res;
2863 const struct stream_interface *si_f, *si_b;
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002864
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002865 if (!s) {
Willy Tarreau5484d582019-05-22 09:33:03 +02002866 chunk_appendf(buf, "%sstrm=%p%c", pfx, s, eol);
2867 return;
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002868 }
2869
Willy Tarreau5484d582019-05-22 09:33:03 +02002870 if (s->obj_type != OBJ_TYPE_STREAM) {
2871 chunk_appendf(buf, "%sstrm=%p [invalid type=%d(%s)]%c",
2872 pfx, s, s->obj_type, obj_type_name(&s->obj_type), eol);
2873 return;
2874 }
2875
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002876 si_f = &s->si[0];
2877 si_b = &s->si[1];
2878 req = &s->req;
2879 res = &s->res;
2880
2881 csf = objt_cs(si_f->end);
2882 cof = cs_conn(csf);
2883 acf = objt_appctx(si_f->end);
Willy Tarreau71e34c12019-07-17 15:07:06 +02002884 if (cof && cof->src && addr_to_str(cof->src, pn, sizeof(pn)) >= 0)
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002885 src = pn;
2886 else if (acf)
2887 src = acf->applet->name;
2888
2889 csb = objt_cs(si_b->end);
2890 cob = cs_conn(csb);
2891 acb = objt_appctx(si_b->end);
2892 srv = objt_server(s->target);
2893 if (srv)
2894 dst = srv->id;
2895 else if (acb)
2896 dst = acb->applet->name;
2897
Willy Tarreau5484d582019-05-22 09:33:03 +02002898 chunk_appendf(buf,
2899 "%sstrm=%p src=%s fe=%s be=%s dst=%s%c"
2900 "%srqf=%x rqa=%x rpf=%x rpa=%x sif=%s,%x sib=%s,%x%c"
2901 "%saf=%p,%u csf=%p,%x%c"
2902 "%sab=%p,%u csb=%p,%x%c"
2903 "%scof=%p,%x:%s(%p)/%s(%p)/%s(%d)%c"
2904 "%scob=%p,%x:%s(%p)/%s(%p)/%s(%d)%c"
2905 "",
2906 pfx, s, src, s->sess->fe->id, s->be->id, dst, eol,
2907 pfx, req->flags, req->analysers, res->flags, res->analysers,
2908 si_state_str(si_f->state), si_f->flags,
2909 si_state_str(si_b->state), si_b->flags, eol,
2910 pfx, acf, acf ? acf->st0 : 0, csf, csf ? csf->flags : 0, eol,
2911 pfx, acb, acb ? acb->st0 : 0, csb, csb ? csb->flags : 0, eol,
2912 pfx, cof, cof ? cof->flags : 0, conn_get_mux_name(cof), cof?cof->ctx:0, conn_get_xprt_name(cof),
2913 cof ? cof->xprt_ctx : 0, conn_get_ctrl_name(cof), cof ? cof->handle.fd : 0, eol,
2914 pfx, cob, cob ? cob->flags : 0, conn_get_mux_name(cob), cob?cob->ctx:0, conn_get_xprt_name(cob),
2915 cob ? cob->xprt_ctx : 0, conn_get_ctrl_name(cob), cob ? cob->handle.fd : 0, eol);
2916}
2917
2918/* dumps an error message for type <type> at ptr <ptr> related to stream <s>,
Willy Tarreaub106ce12019-05-22 08:57:01 +02002919 * having reached loop rate <rate>, then aborts hoping to retrieve a core.
Willy Tarreau5484d582019-05-22 09:33:03 +02002920 */
2921void stream_dump_and_crash(enum obj_type *obj, int rate)
2922{
2923 const struct stream *s;
Willy Tarreau5484d582019-05-22 09:33:03 +02002924 char *msg = NULL;
2925 const void *ptr;
2926
2927 ptr = s = objt_stream(obj);
2928 if (!s) {
2929 const struct appctx *appctx = objt_appctx(obj);
2930 if (!appctx)
2931 return;
2932 ptr = appctx;
2933 s = si_strm(appctx->owner);
2934 if (!s)
2935 return;
2936 }
2937
Willy Tarreau5484d582019-05-22 09:33:03 +02002938 chunk_reset(&trash);
2939 stream_dump(&trash, s, "", ' ');
Willy Tarreaub106ce12019-05-22 08:57:01 +02002940 memprintf(&msg,
2941 "A bogus %s [%p] is spinning at %d calls per second and refuses to die, "
2942 "aborting now! Please report this error to developers "
2943 "[%s]\n",
Willy Tarreau5484d582019-05-22 09:33:03 +02002944 obj_type_name(obj), ptr, rate, trash.area);
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002945
2946 ha_alert("%s", msg);
2947 send_log(NULL, LOG_EMERG, "%s", msg);
2948 abort();
2949}
2950
Willy Tarreau8b22a712010-06-18 17:46:06 +02002951/************************************************************************/
2952/* All supported ACL keywords must be declared here. */
2953/************************************************************************/
2954
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002955/* 0=OK, <0=Alert, >0=Warning */
2956static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2957 struct proxy *px, struct act_rule *rule,
2958 char **err)
2959{
2960 struct action_kw *kw;
2961
2962 /* Check if the service name exists. */
2963 if (*(args[*cur_arg]) == 0) {
2964 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002965 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002966 }
2967
2968 /* lookup for keyword corresponding to a service. */
2969 kw = action_lookup(&service_keywords, args[*cur_arg]);
2970 if (!kw) {
2971 memprintf(err, "'%s' unknown service name.", args[1]);
2972 return ACT_RET_PRS_ERR;
2973 }
2974 (*cur_arg)++;
2975
2976 /* executes specific rule parser. */
2977 rule->kw = kw;
2978 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2979 return ACT_RET_PRS_ERR;
2980
2981 /* Register processing function. */
2982 rule->action_ptr = process_use_service;
2983 rule->action = ACT_CUSTOM;
2984
2985 return ACT_RET_PRS_OK;
2986}
2987
2988void service_keywords_register(struct action_kw_list *kw_list)
2989{
2990 LIST_ADDQ(&service_keywords, &kw_list->list);
2991}
2992
Willy Tarreau679bba12019-03-19 08:08:10 +01002993/* Lists the known services on <out> */
2994void list_services(FILE *out)
2995{
2996 struct action_kw_list *kw_list;
2997 int found = 0;
2998 int i;
2999
3000 fprintf(out, "Available services :");
3001 list_for_each_entry(kw_list, &service_keywords, list) {
3002 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
3003 if (!found)
3004 fputc('\n', out);
3005 found = 1;
3006 fprintf(out, "\t%s\n", kw_list->kw[i].kw);
3007 }
3008 }
3009 if (!found)
3010 fprintf(out, " none\n");
3011}
William Lallemand4c5b4d52016-11-21 08:51:11 +01003012
3013/* This function dumps a complete stream state onto the stream interface's
3014 * read buffer. The stream has to be set in strm. It returns 0 if the output
3015 * buffer is full and it needs to be called again, otherwise non-zero. It is
3016 * designed to be called from stats_dump_strm_to_buffer() below.
3017 */
3018static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
3019{
3020 struct appctx *appctx = __objt_appctx(si->end);
3021 struct tm tm;
3022 extern const char *monthname[12];
3023 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003024 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003025 struct connection *conn;
3026 struct appctx *tmpctx;
3027
3028 chunk_reset(&trash);
3029
3030 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
3031 /* stream changed, no need to go any further */
3032 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreaue6e52362019-01-04 17:42:57 +01003033 if (ci_putchk(si_ic(si), &trash) == -1)
3034 goto full;
3035 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003036 }
3037
3038 switch (appctx->ctx.sess.section) {
3039 case 0: /* main status of the stream */
3040 appctx->ctx.sess.uid = strm->uniq_id;
3041 appctx->ctx.sess.section = 1;
3042 /* fall through */
3043
3044 case 1:
3045 get_localtime(strm->logs.accept_date.tv_sec, &tm);
3046 chunk_appendf(&trash,
3047 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
3048 strm,
3049 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
3050 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
3051 strm->uniq_id,
3052 strm_li(strm) ? strm_li(strm)->proto->name : "?");
3053
3054 conn = objt_conn(strm_orig(strm));
Willy Tarreau71e34c12019-07-17 15:07:06 +02003055 switch (conn && conn_get_src(conn) ? addr_to_str(conn->src, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003056 case AF_INET:
3057 case AF_INET6:
3058 chunk_appendf(&trash, " source=%s:%d\n",
Willy Tarreau71e34c12019-07-17 15:07:06 +02003059 pn, get_host_port(conn->src));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003060 break;
3061 case AF_UNIX:
3062 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
3063 break;
3064 default:
3065 /* no more information to print right now */
3066 chunk_appendf(&trash, "\n");
3067 break;
3068 }
3069
3070 chunk_appendf(&trash,
Willy Tarreauadf7a152019-01-07 10:10:07 +01003071 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p waiting=%d\n",
3072 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos,
3073 !LIST_ISEMPTY(&strm->buffer_wait.list));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003074
3075 chunk_appendf(&trash,
3076 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
3077 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
3078 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
3079 strm_li(strm) ? strm_li(strm)->luid : 0);
3080
Willy Tarreau71e34c12019-07-17 15:07:06 +02003081 switch (conn && conn_get_dst(conn) ? addr_to_str(conn->dst, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003082 case AF_INET:
3083 case AF_INET6:
3084 chunk_appendf(&trash, " addr=%s:%d\n",
Willy Tarreau71e34c12019-07-17 15:07:06 +02003085 pn, get_host_port(conn->dst));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003086 break;
3087 case AF_UNIX:
3088 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
3089 break;
3090 default:
3091 /* no more information to print right now */
3092 chunk_appendf(&trash, "\n");
3093 break;
3094 }
3095
3096 if (strm->be->cap & PR_CAP_BE)
3097 chunk_appendf(&trash,
3098 " backend=%s (id=%u mode=%s)",
3099 strm->be->id,
3100 strm->be->uuid, strm->be->mode ? "http" : "tcp");
3101 else
3102 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
3103
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003104 cs = objt_cs(strm->si[1].end);
3105 conn = cs_conn(cs);
3106
Willy Tarreau71e34c12019-07-17 15:07:06 +02003107 switch (conn && conn_get_src(conn) ? addr_to_str(conn->src, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003108 case AF_INET:
3109 case AF_INET6:
3110 chunk_appendf(&trash, " addr=%s:%d\n",
Willy Tarreau71e34c12019-07-17 15:07:06 +02003111 pn, get_host_port(conn->src));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003112 break;
3113 case AF_UNIX:
3114 chunk_appendf(&trash, " addr=unix\n");
3115 break;
3116 default:
3117 /* no more information to print right now */
3118 chunk_appendf(&trash, "\n");
3119 break;
3120 }
3121
3122 if (strm->be->cap & PR_CAP_BE)
3123 chunk_appendf(&trash,
3124 " server=%s (id=%u)",
3125 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
3126 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
3127 else
3128 chunk_appendf(&trash, " server=<NONE> (id=-1)");
3129
Willy Tarreau71e34c12019-07-17 15:07:06 +02003130 switch (conn && conn_get_dst(conn) ? addr_to_str(conn->dst, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003131 case AF_INET:
3132 case AF_INET6:
3133 chunk_appendf(&trash, " addr=%s:%d\n",
Willy Tarreau71e34c12019-07-17 15:07:06 +02003134 pn, get_host_port(conn->dst));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003135 break;
3136 case AF_UNIX:
3137 chunk_appendf(&trash, " addr=unix\n");
3138 break;
3139 default:
3140 /* no more information to print right now */
3141 chunk_appendf(&trash, "\n");
3142 break;
3143 }
3144
3145 chunk_appendf(&trash,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003146 " task=%p (state=0x%02x nice=%d calls=%u rate=%u exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003147 strm->task,
3148 strm->task->state,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003149 strm->task->nice, strm->task->calls, read_freq_ctr(&strm->call_rate),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003150 strm->task->expire ?
3151 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
3152 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
3153 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01003154 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003155 task_in_rq(strm->task) ? ", running" : "");
3156
3157 chunk_appendf(&trash,
3158 " age=%s)\n",
3159 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
3160
3161 if (strm->txn)
3162 chunk_appendf(&trash,
Christopher Fauletbcac7862019-07-17 10:46:50 +02003163 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s req.f=0x%02x rsp.f=0x%02x\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003164 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau7778b592019-01-07 10:38:10 +01003165 h1_msg_state_str(strm->txn->req.msg_state), h1_msg_state_str(strm->txn->rsp.msg_state),
Christopher Fauletbcac7862019-07-17 10:46:50 +02003166 strm->txn->req.flags, strm->txn->rsp.flags);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003167
3168 chunk_appendf(&trash,
Christopher Faulet224a2d72019-01-04 15:06:13 +01003169 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s et=0x%03x sub=%d)\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003170 &strm->si[0],
3171 si_state_str(strm->si[0].state),
3172 strm->si[0].flags,
3173 obj_type_name(strm->si[0].end),
3174 obj_base_ptr(strm->si[0].end),
3175 strm->si[0].exp ?
3176 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
3177 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
3178 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Faulet224a2d72019-01-04 15:06:13 +01003179 strm->si[0].err_type, strm->si[0].wait_event.events);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003180
3181 chunk_appendf(&trash,
Christopher Faulet224a2d72019-01-04 15:06:13 +01003182 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s et=0x%03x sub=%d)\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003183 &strm->si[1],
3184 si_state_str(strm->si[1].state),
3185 strm->si[1].flags,
3186 obj_type_name(strm->si[1].end),
3187 obj_base_ptr(strm->si[1].end),
3188 strm->si[1].exp ?
3189 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
3190 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
3191 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Faulet224a2d72019-01-04 15:06:13 +01003192 strm->si[1].err_type, strm->si[1].wait_event.events);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003193
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003194 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
3195 conn = cs->conn;
3196
William Lallemand4c5b4d52016-11-21 08:51:11 +01003197 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003198 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003199 conn,
3200 conn_get_ctrl_name(conn),
3201 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003202 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003203 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003204 obj_type_name(conn->target),
3205 obj_base_ptr(conn->target));
3206
3207 chunk_appendf(&trash,
Willy Tarreau76913d32019-08-30 14:33:11 +02003208 " flags=0x%08x fd=%d fd.state=%02x updt=%d fd.tmask=0x%lx\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003209 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003210 conn->handle.fd,
3211 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003212 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003213 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
Willy Tarreaufb3b1b02018-12-18 14:28:24 +01003214
3215 chunk_appendf(&trash, " cs=%p csf=0x%08x ctx=%p\n", cs, cs->flags, cs->ctx);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003216 }
3217 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
3218 chunk_appendf(&trash,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003219 " app0=%p st0=%d st1=%d st2=%d applet=%s tmask=0x%lx nice=%d calls=%u rate=%u cpu=%llu lat=%llu\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003220 tmpctx,
3221 tmpctx->st0,
3222 tmpctx->st1,
3223 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003224 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003225 tmpctx->thread_mask,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003226 tmpctx->t->nice, tmpctx->t->calls, read_freq_ctr(&tmpctx->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003227 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003228 }
3229
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003230 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
3231 conn = cs->conn;
3232
William Lallemand4c5b4d52016-11-21 08:51:11 +01003233 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003234 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003235 conn,
3236 conn_get_ctrl_name(conn),
3237 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003238 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003239 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003240 obj_type_name(conn->target),
3241 obj_base_ptr(conn->target));
3242
3243 chunk_appendf(&trash,
Willy Tarreau76913d32019-08-30 14:33:11 +02003244 " flags=0x%08x fd=%d fd.state=%02x updt=%d fd.tmask=0x%lx\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003245 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003246 conn->handle.fd,
3247 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003248 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003249 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
Willy Tarreaufb3b1b02018-12-18 14:28:24 +01003250
3251 chunk_appendf(&trash, " cs=%p csf=0x%08x ctx=%p\n", cs, cs->flags, cs->ctx);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003252 }
3253 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
3254 chunk_appendf(&trash,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003255 " app1=%p st0=%d st1=%d st2=%d applet=%s tmask=0x%lx nice=%d calls=%u rate=%u cpu=%llu lat=%llu\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003256 tmpctx,
3257 tmpctx->st0,
3258 tmpctx->st1,
3259 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003260 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003261 tmpctx->thread_mask,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003262 tmpctx->t->nice, tmpctx->t->calls, read_freq_ctr(&tmpctx->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003263 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003264 }
3265
3266 chunk_appendf(&trash,
3267 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3268 " an_exp=%s",
3269 &strm->req,
3270 strm->req.flags, strm->req.analysers,
3271 strm->req.pipe ? strm->req.pipe->data : 0,
3272 strm->req.to_forward, strm->req.total,
3273 strm->req.analyse_exp ?
3274 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
3275 TICKS_TO_MS(1000)) : "<NEVER>");
3276
3277 chunk_appendf(&trash,
3278 " rex=%s",
3279 strm->req.rex ?
3280 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
3281 TICKS_TO_MS(1000)) : "<NEVER>");
3282
3283 chunk_appendf(&trash,
3284 " wex=%s\n"
Christopher Fauletbcac7862019-07-17 10:46:50 +02003285 " buf=%p data=%p o=%u p=%u i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003286 strm->req.wex ?
3287 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
3288 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003289 &strm->req.buf,
3290 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Christopher Fauletbcac7862019-07-17 10:46:50 +02003291 (unsigned int)ci_head_ofs(&strm->req), (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003292 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003293
Christopher Fauletb9af8812019-01-04 14:30:44 +01003294 if (IS_HTX_STRM(strm)) {
3295 struct htx *htx = htxbuf(&strm->req.buf);
3296
3297 chunk_appendf(&trash,
Willy Tarreaub84e67f2019-01-07 10:01:34 +01003298 " htx=%p flags=0x%x size=%u data=%u used=%u wrap=%s extra=%llu\n",
Christopher Faulet192c6a22019-06-11 16:32:24 +02003299 htx, htx->flags, htx->size, htx->data, htx_nbblks(htx),
Christopher Faulet28f29c72019-04-30 17:55:45 +02003300 (htx->tail >= htx->head) ? "NO" : "YES",
Christopher Fauletb9af8812019-01-04 14:30:44 +01003301 (unsigned long long)htx->extra);
3302 }
3303
William Lallemand4c5b4d52016-11-21 08:51:11 +01003304 chunk_appendf(&trash,
3305 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3306 " an_exp=%s",
3307 &strm->res,
3308 strm->res.flags, strm->res.analysers,
3309 strm->res.pipe ? strm->res.pipe->data : 0,
3310 strm->res.to_forward, strm->res.total,
3311 strm->res.analyse_exp ?
3312 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
3313 TICKS_TO_MS(1000)) : "<NEVER>");
3314
3315 chunk_appendf(&trash,
3316 " rex=%s",
3317 strm->res.rex ?
3318 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3319 TICKS_TO_MS(1000)) : "<NEVER>");
3320
3321 chunk_appendf(&trash,
3322 " wex=%s\n"
Christopher Fauletbcac7862019-07-17 10:46:50 +02003323 " buf=%p data=%p o=%u p=%u i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003324 strm->res.wex ?
3325 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3326 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003327 &strm->res.buf,
3328 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Christopher Fauletbcac7862019-07-17 10:46:50 +02003329 (unsigned int)ci_head_ofs(&strm->res), (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003330 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003331
Christopher Fauletb9af8812019-01-04 14:30:44 +01003332 if (IS_HTX_STRM(strm)) {
3333 struct htx *htx = htxbuf(&strm->res.buf);
3334
3335 chunk_appendf(&trash,
3336 " htx=%p flags=0x%x size=%u data=%u used=%u wrap=%s extra=%llu\n",
Christopher Faulet192c6a22019-06-11 16:32:24 +02003337 htx, htx->flags, htx->size, htx->data, htx_nbblks(htx),
Christopher Faulet28f29c72019-04-30 17:55:45 +02003338 (htx->tail >= htx->head) ? "NO" : "YES",
Christopher Fauletb9af8812019-01-04 14:30:44 +01003339 (unsigned long long)htx->extra);
3340 }
3341
Willy Tarreaue6e52362019-01-04 17:42:57 +01003342 if (ci_putchk(si_ic(si), &trash) == -1)
3343 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003344
3345 /* use other states to dump the contents */
3346 }
3347 /* end of dump */
Willy Tarreaue6e52362019-01-04 17:42:57 +01003348 done:
William Lallemand4c5b4d52016-11-21 08:51:11 +01003349 appctx->ctx.sess.uid = 0;
3350 appctx->ctx.sess.section = 0;
3351 return 1;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003352 full:
3353 return 0;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003354}
3355
3356
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003357static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003358{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003359 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3360 return 1;
3361
3362 if (*args[2] && strcmp(args[2], "all") == 0)
3363 appctx->ctx.sess.target = (void *)-1;
3364 else if (*args[2])
3365 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3366 else
3367 appctx->ctx.sess.target = NULL;
3368 appctx->ctx.sess.section = 0; /* start with stream status */
3369 appctx->ctx.sess.pos = 0;
3370
3371 return 0;
3372}
3373
3374/* This function dumps all streams' states onto the stream interface's
3375 * read buffer. It returns 0 if the output buffer is full and it needs
Willy Tarreaue6e52362019-01-04 17:42:57 +01003376 * to be called again, otherwise non-zero. It proceeds in an isolated
3377 * thread so there is no thread safety issue here.
William Lallemand4c5b4d52016-11-21 08:51:11 +01003378 */
3379static int cli_io_handler_dump_sess(struct appctx *appctx)
3380{
3381 struct stream_interface *si = appctx->owner;
3382 struct connection *conn;
3383
Willy Tarreaue6e52362019-01-04 17:42:57 +01003384 thread_isolate();
3385
William Lallemand4c5b4d52016-11-21 08:51:11 +01003386 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3387 /* If we're forced to shut down, we might have to remove our
3388 * reference to the last stream being dumped.
3389 */
3390 if (appctx->st2 == STAT_ST_LIST) {
3391 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3392 LIST_DEL(&appctx->ctx.sess.bref.users);
3393 LIST_INIT(&appctx->ctx.sess.bref.users);
3394 }
3395 }
Willy Tarreaue6e52362019-01-04 17:42:57 +01003396 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003397 }
3398
3399 chunk_reset(&trash);
3400
3401 switch (appctx->st2) {
3402 case STAT_ST_INIT:
3403 /* the function had not been called yet, let's prepare the
3404 * buffer for a response. We initialize the current stream
3405 * pointer to the first in the global list. When a target
3406 * stream is being destroyed, it is responsible for updating
3407 * this pointer. We know we have reached the end when this
3408 * pointer points back to the head of the streams list.
3409 */
3410 LIST_INIT(&appctx->ctx.sess.bref.users);
3411 appctx->ctx.sess.bref.ref = streams.n;
3412 appctx->st2 = STAT_ST_LIST;
3413 /* fall through */
3414
3415 case STAT_ST_LIST:
3416 /* first, let's detach the back-ref from a possible previous stream */
3417 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3418 LIST_DEL(&appctx->ctx.sess.bref.users);
3419 LIST_INIT(&appctx->ctx.sess.bref.users);
3420 }
3421
3422 /* and start from where we stopped */
3423 while (appctx->ctx.sess.bref.ref != &streams) {
3424 char pn[INET6_ADDRSTRLEN];
3425 struct stream *curr_strm;
3426
3427 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3428
3429 if (appctx->ctx.sess.target) {
3430 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3431 goto next_sess;
3432
3433 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3434 /* call the proper dump() function and return if we're missing space */
Willy Tarreaue6e52362019-01-04 17:42:57 +01003435 if (!stats_dump_full_strm_to_buffer(si, curr_strm))
3436 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003437
3438 /* stream dump complete */
3439 LIST_DEL(&appctx->ctx.sess.bref.users);
3440 LIST_INIT(&appctx->ctx.sess.bref.users);
3441 if (appctx->ctx.sess.target != (void *)-1) {
3442 appctx->ctx.sess.target = NULL;
3443 break;
3444 }
3445 else
3446 goto next_sess;
3447 }
3448
3449 chunk_appendf(&trash,
3450 "%p: proto=%s",
3451 curr_strm,
3452 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3453
3454 conn = objt_conn(strm_orig(curr_strm));
Willy Tarreau71e34c12019-07-17 15:07:06 +02003455 switch (conn && conn_get_src(conn) ? addr_to_str(conn->src, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003456 case AF_INET:
3457 case AF_INET6:
3458 chunk_appendf(&trash,
3459 " src=%s:%d fe=%s be=%s srv=%s",
3460 pn,
Willy Tarreau71e34c12019-07-17 15:07:06 +02003461 get_host_port(conn->src),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003462 strm_fe(curr_strm)->id,
3463 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3464 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3465 );
3466 break;
3467 case AF_UNIX:
3468 chunk_appendf(&trash,
3469 " src=unix:%d fe=%s be=%s srv=%s",
3470 strm_li(curr_strm)->luid,
3471 strm_fe(curr_strm)->id,
3472 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3473 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3474 );
3475 break;
3476 }
3477
3478 chunk_appendf(&trash,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003479 " ts=%02x age=%s calls=%u rate=%u cpu=%llu lat=%llu",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003480 curr_strm->task->state,
3481 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003482 curr_strm->task->calls, read_freq_ctr(&curr_strm->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003483 (unsigned long long)curr_strm->task->cpu_time, (unsigned long long)curr_strm->task->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003484
3485 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003486 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003487 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003488 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003489 curr_strm->req.analysers,
3490 curr_strm->req.rex ?
3491 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3492 TICKS_TO_MS(1000)) : "");
3493
3494 chunk_appendf(&trash,
3495 ",wx=%s",
3496 curr_strm->req.wex ?
3497 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3498 TICKS_TO_MS(1000)) : "");
3499
3500 chunk_appendf(&trash,
3501 ",ax=%s]",
3502 curr_strm->req.analyse_exp ?
3503 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3504 TICKS_TO_MS(1000)) : "");
3505
3506 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003507 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003508 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003509 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003510 curr_strm->res.analysers,
3511 curr_strm->res.rex ?
3512 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3513 TICKS_TO_MS(1000)) : "");
3514
3515 chunk_appendf(&trash,
3516 ",wx=%s",
3517 curr_strm->res.wex ?
3518 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3519 TICKS_TO_MS(1000)) : "");
3520
3521 chunk_appendf(&trash,
3522 ",ax=%s]",
3523 curr_strm->res.analyse_exp ?
3524 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3525 TICKS_TO_MS(1000)) : "");
3526
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003527 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003528 chunk_appendf(&trash,
3529 " s0=[%d,%1xh,fd=%d,ex=%s]",
3530 curr_strm->si[0].state,
3531 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003532 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003533 curr_strm->si[0].exp ?
3534 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3535 TICKS_TO_MS(1000)) : "");
3536
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003537 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003538 chunk_appendf(&trash,
3539 " s1=[%d,%1xh,fd=%d,ex=%s]",
3540 curr_strm->si[1].state,
3541 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003542 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003543 curr_strm->si[1].exp ?
3544 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3545 TICKS_TO_MS(1000)) : "");
3546
3547 chunk_appendf(&trash,
3548 " exp=%s",
3549 curr_strm->task->expire ?
3550 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3551 TICKS_TO_MS(1000)) : "");
3552 if (task_in_rq(curr_strm->task))
3553 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3554
3555 chunk_appendf(&trash, "\n");
3556
Willy Tarreau06d80a92017-10-19 14:32:15 +02003557 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003558 /* let's try again later from this stream. We add ourselves into
3559 * this stream's users so that it can remove us upon termination.
3560 */
William Lallemand4c5b4d52016-11-21 08:51:11 +01003561 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Willy Tarreaue6e52362019-01-04 17:42:57 +01003562 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003563 }
3564
3565 next_sess:
3566 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3567 }
3568
3569 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3570 /* specified stream not found */
3571 if (appctx->ctx.sess.section > 0)
3572 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3573 else
3574 chunk_appendf(&trash, "Session not found.\n");
3575
Willy Tarreaue6e52362019-01-04 17:42:57 +01003576 if (ci_putchk(si_ic(si), &trash) == -1)
3577 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003578
3579 appctx->ctx.sess.target = NULL;
3580 appctx->ctx.sess.uid = 0;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003581 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003582 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003583 /* fall through */
3584
3585 default:
3586 appctx->st2 = STAT_ST_FIN;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003587 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003588 }
Willy Tarreaue6e52362019-01-04 17:42:57 +01003589 done:
3590 thread_release();
3591 return 1;
3592 full:
3593 thread_release();
3594 si_rx_room_blk(si);
3595 return 0;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003596}
3597
3598static void cli_release_show_sess(struct appctx *appctx)
3599{
3600 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003601 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003602 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3603 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003604 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003605 }
3606}
3607
Willy Tarreau61b65212016-11-24 11:09:25 +01003608/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003609static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003610{
3611 struct stream *strm, *ptr;
3612
3613 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3614 return 1;
3615
Willy Tarreau9d008692019-08-09 11:21:01 +02003616 if (!*args[2])
3617 return cli_err(appctx, "Session pointer expected (use 'show sess').\n");
Willy Tarreau61b65212016-11-24 11:09:25 +01003618
3619 ptr = (void *)strtoul(args[2], NULL, 0);
3620
3621 /* first, look for the requested stream in the stream table */
3622 list_for_each_entry(strm, &streams, list) {
3623 if (strm == ptr)
3624 break;
3625 }
3626
3627 /* do we have the stream ? */
Willy Tarreau9d008692019-08-09 11:21:01 +02003628 if (strm != ptr)
3629 return cli_err(appctx, "No such session (use 'show sess').\n");
Willy Tarreau61b65212016-11-24 11:09:25 +01003630
3631 stream_shutdown(strm, SF_ERR_KILLED);
3632 return 1;
3633}
3634
Willy Tarreau4e46b622016-11-23 16:50:48 +01003635/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003636static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003637{
3638 struct server *sv;
3639 struct stream *strm, *strm_bck;
3640
3641 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3642 return 1;
3643
3644 sv = cli_find_server(appctx, args[3]);
3645 if (!sv)
3646 return 1;
3647
3648 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003649 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003650 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3651 if (strm->srv_conn == sv)
3652 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003653 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003654 return 1;
3655}
3656
William Lallemand4c5b4d52016-11-21 08:51:11 +01003657/* register cli keywords */
3658static struct cli_kw_list cli_kws = {{ },{
3659 { { "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 +01003660 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003661 { { "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 +01003662 {{},}
3663}};
3664
Willy Tarreau0108d902018-11-25 19:14:37 +01003665INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
3666
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003667/* main configuration keyword registration. */
3668static struct action_kw_list stream_tcp_keywords = { ILH, {
3669 { "use-service", stream_parse_use_service },
3670 { /* END */ }
3671}};
3672
Willy Tarreau0108d902018-11-25 19:14:37 +01003673INITCALL1(STG_REGISTER, tcp_req_cont_keywords_register, &stream_tcp_keywords);
3674
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003675static struct action_kw_list stream_http_keywords = { ILH, {
3676 { "use-service", stream_parse_use_service },
3677 { /* END */ }
3678}};
3679
Willy Tarreau0108d902018-11-25 19:14:37 +01003680INITCALL1(STG_REGISTER, http_req_keywords_register, &stream_http_keywords);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003681
Willy Tarreaubaaee002006-06-26 02:48:02 +02003682/*
3683 * Local variables:
3684 * c-indent-level: 8
3685 * c-basic-offset: 8
3686 * End:
3687 */