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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>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010049#include <proto/hdr_idx.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010050#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +020051#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020052#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020053#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020054#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020055#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020056#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010057#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010058#include <proto/proto_http.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020059#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020060#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010061#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020062#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010063#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010064#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010065#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010066#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020067#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020068
Willy Tarreau8ceae722018-11-26 11:58:30 +010069DECLARE_POOL(pool_head_stream, "stream", sizeof(struct stream));
70
Willy Tarreaub6b3df32018-11-26 16:31:20 +010071struct list streams = LIST_HEAD_INIT(streams);
Willy Tarreau86abe442018-11-25 20:12:18 +010072__decl_spinlock(streams_lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +020073
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020074/* List of all use-service keywords. */
75static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
76
Willy Tarreau5790eb02017-08-28 17:18:36 +020077
78/* Create a new stream for connection <conn>. Return < 0 on error. This is only
79 * valid right after the handshake, before the connection's data layer is
80 * initialized, because it relies on the session to be in conn->owner.
81 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +020082int stream_create_from_cs(struct conn_stream *cs)
Willy Tarreau5790eb02017-08-28 17:18:36 +020083{
84 struct stream *strm;
85
Olivier Houchard9aaf7782017-09-13 18:30:23 +020086 strm = stream_new(cs->conn->owner, &cs->obj_type);
Willy Tarreau5790eb02017-08-28 17:18:36 +020087 if (strm == NULL)
88 return -1;
89
90 task_wakeup(strm->task, TASK_WOKEN_INIT);
91 return 0;
92}
93
Willy Tarreaub882dd82018-11-06 15:50:21 +010094/* Callback used to wake up a stream when an input buffer is available. The
95 * stream <s>'s stream interfaces are checked for a failed buffer allocation
Willy Tarreaud0f5bbc2018-11-14 11:10:26 +010096 * as indicated by the presence of the SI_FL_RXBLK_ROOM flag and the lack of a
Willy Tarreaub882dd82018-11-06 15:50:21 +010097 * buffer, and and input buffer is assigned there (at most one). The function
98 * returns 1 and wakes the stream up if a buffer was taken, otherwise zero.
99 * It's designed to be called from __offer_buffer().
100 */
101int stream_buf_available(void *arg)
102{
103 struct stream *s = arg;
104
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100105 if (!s->req.buf.size && !s->req.pipe && (s->si[0].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100106 b_alloc_margin(&s->req.buf, global.tune.reserved_bufs))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100107 si_rx_buff_rdy(&s->si[0]);
108 else if (!s->res.buf.size && !s->res.pipe && (s->si[1].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100109 b_alloc_margin(&s->res.buf, 0))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100110 si_rx_buff_rdy(&s->si[1]);
Willy Tarreaub882dd82018-11-06 15:50:21 +0100111 else
112 return 0;
113
114 task_wakeup(s->task, TASK_WOKEN_RES);
115 return 1;
116
117}
118
Willy Tarreau9903f0e2015-04-04 18:50:31 +0200119/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200120 * handshake, in order to complete initialization of a valid stream. It must be
Joseph Herlant4cc8d0d2018-11-15 09:14:14 -0800121 * called with a completely initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200122 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +0200123 * end point is assigned to <origin>, which must be valid. The stream's task
124 * is configured with a nice value inherited from the listener's nice if any.
125 * The task's context is set to the new stream, and its function is set to
126 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +0200127 */
Willy Tarreau87787ac2017-08-28 16:22:54 +0200128struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +0200129{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200130 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200131 struct task *t;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200132 struct conn_stream *cs = objt_cs(origin);
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200133 struct appctx *appctx = objt_appctx(origin);
Christopher Fauletb3484d62018-11-29 15:19:05 +0100134 const struct cs_info *csinfo;
Willy Tarreau2542b532012-08-31 16:01:23 +0200135
Willy Tarreaubafbe012017-11-24 17:34:44 +0100136 if (unlikely((s = pool_alloc(pool_head_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200137 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200138
139 /* minimum stream initialization required for an embryonic stream is
140 * fairly low. We need very little to execute L4 ACLs, then we need a
141 * task to make the client-side connection live on its own.
142 * - flags
143 * - stick-entry tracking
144 */
145 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200146 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200147 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200148 tv_zero(&s->logs.tv_request);
149 s->logs.t_queue = -1;
150 s->logs.t_connect = -1;
151 s->logs.t_data = -1;
152 s->logs.t_close = 0;
153 s->logs.bytes_in = s->logs.bytes_out = 0;
Patrick Hemmerffe5e8c2018-05-11 12:52:31 -0400154 s->logs.prx_queue_pos = 0; /* we get the number of pending conns before us */
155 s->logs.srv_queue_pos = 0; /* we will get this number soon */
Baptiste Assmann333939c2019-01-21 08:34:50 +0100156 s->obj_type = OBJ_TYPE_STREAM;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200157
Christopher Fauletb3484d62018-11-29 15:19:05 +0100158 csinfo = si_get_cs_info(cs);
159 if (csinfo) {
160 s->logs.accept_date = csinfo->create_date;
161 s->logs.tv_accept = csinfo->tv_create;
162 s->logs.t_handshake = csinfo->t_handshake;
163 s->logs.t_idle = csinfo->t_idle;
164 }
165 else {
166 s->logs.accept_date = sess->accept_date;
167 s->logs.tv_accept = sess->tv_accept;
168 s->logs.t_handshake = sess->t_handshake;
169 s->logs.t_idle = -1;
170 }
171
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200172 /* default logging function */
173 s->do_log = strm_log;
174
175 /* default error reporting function, may be changed by analysers */
176 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200177
178 /* Initialise the current rule list pointer to NULL. We are sure that
179 * any rulelist match the NULL pointer.
180 */
181 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200182 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200183
Willy Tarreaua68f7622015-09-21 17:48:24 +0200184 /* Copy SC counters for the stream. We don't touch refcounts because
185 * any reference we have is inherited from the session. Since the stream
186 * doesn't exist without the session, the session's existence guarantees
187 * we don't lose the entry. During the store operation, the stream won't
188 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200189 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200190 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200191
192 s->sess = sess;
193 s->si[0].flags = SI_FL_NONE;
194 s->si[1].flags = SI_FL_ISBACK;
195
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100196 s->uniq_id = _HA_ATOMIC_XADD(&global.req_count, 1);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200197
Willy Tarreau87b09662015-04-03 00:22:06 +0200198 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200199 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100200
201 LIST_INIT(&s->buffer_wait.list);
202 s->buffer_wait.target = s;
Willy Tarreaub882dd82018-11-06 15:50:21 +0100203 s->buffer_wait.wakeup_cb = stream_buf_available;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200204
Willy Tarreau2e9c1d22019-04-24 08:28:31 +0200205 s->call_rate.curr_sec = s->call_rate.curr_ctr = s->call_rate.prev_ctr = 0;
William Lallemandcf62f7e2018-10-26 14:47:40 +0200206 s->pcli_next_pid = 0;
William Lallemandebf61802018-12-11 16:10:57 +0100207 s->pcli_flags = 0;
Willy Tarreau2542b532012-08-31 16:01:23 +0200208 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200209
Emeric Brunc60def82017-09-27 14:59:38 +0200210 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200211 goto out_fail_alloc;
212
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200213 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100214 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200215 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200216 t->context = s;
217 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200218 if (sess->listener)
219 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200220
Willy Tarreau87b09662015-04-03 00:22:06 +0200221 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200222 * This changes later when switching rules are executed or
223 * when the default backend is assigned.
224 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200225 s->be = sess->fe;
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200226 s->req.buf = BUF_NULL;
227 s->res.buf = BUF_NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200228 s->req_cap = NULL;
229 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200230
Willy Tarreauebcd4842015-06-19 11:59:02 +0200231 /* Initialise all the variables contexts even if not used.
232 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200233 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200234 vars_init(&s->vars_txn, SCOPE_TXN);
235 vars_init(&s->vars_reqres, SCOPE_REQ);
236
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200237 /* this part should be common with other protocols */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200238 if (si_reset(&s->si[0]) < 0)
239 goto out_fail_alloc;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200240 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100241 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200242
Christopher Faulet0e160ff2019-04-03 10:01:07 +0200243 if (cs && cs->conn->mux) {
244 if (cs->conn->mux->flags & MX_FL_CLEAN_ABRT)
245 s->si[0].flags |= SI_FL_CLEAN_ABRT;
246 if (cs->conn->mux->flags & MX_FL_HTX)
247 s->flags |= SF_HTX;
248 }
249 /* Set SF_HTX flag for HTX frontends. */
250 if (sess->fe->mode == PR_MODE_HTTP && sess->fe->options2 & PR_O2_USE_HTX)
251 s->flags |= SF_HTX;
Willy Tarreau984fca92017-12-20 16:31:43 +0100252
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200253 /* attach the incoming connection to the stream interface now. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200254 if (cs)
255 si_attach_cs(&s->si[0], cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200256 else if (appctx)
257 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200258
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200259 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200260 s->si[0].flags |= SI_FL_INDEP_STR;
261
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200262 /* pre-initialize the other side's stream interface to an INIT state. The
263 * callbacks will be initialized before attempting to connect.
264 */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200265 if (si_reset(&s->si[1]) < 0)
266 goto out_fail_alloc_si1;
Hongbo Longe39683c2017-03-10 18:41:51 +0100267 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200268
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200269 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200270 s->si[1].flags |= SI_FL_INDEP_STR;
271
Willy Tarreau87b09662015-04-03 00:22:06 +0200272 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100273 s->target = sess->listener ? sess->listener->default_target : NULL;
274
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) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100407 b_drop(&s->req.buf);
408 b_drop(&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_hdr_idx, s->txn->hdr_idx.v);
433 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200434 s->txn = NULL;
435 }
436
Baptiste Assmann333939c2019-01-21 08:34:50 +0100437 if (s->dns_ctx.dns_requester) {
438 free(s->dns_ctx.hostname_dn); s->dns_ctx.hostname_dn = NULL;
439 s->dns_ctx.hostname_dn_len = 0;
440 dns_unlink_resolution(s->dns_ctx.dns_requester);
441
442 pool_free(dns_requester_pool, s->dns_ctx.dns_requester);
443 s->dns_ctx.dns_requester = NULL;
444 }
445
Christopher Fauletd7c91962015-04-30 11:48:27 +0200446 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100447 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200448
Willy Tarreau92fb9832007-10-16 17:34:28 +0200449 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100450 pool_free(fe->rsp_cap_pool, s->res_cap);
451 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200452 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100453
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200454 /* Cleanup all variable contexts. */
Willy Tarreaucda7f3f2018-10-28 13:44:36 +0100455 if (!LIST_ISEMPTY(&s->vars_txn.head))
456 vars_prune(&s->vars_txn, s->sess, s);
457 if (!LIST_ISEMPTY(&s->vars_reqres.head))
458 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200459
Willy Tarreau87b09662015-04-03 00:22:06 +0200460 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200461
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100462 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100463 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100464 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200465 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100466 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100467 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100468 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200469 if (s->list.n != &streams)
470 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100471 bref->ref = s->list.n;
472 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100473 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100474 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200475
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100476 /* applets do not release session yet */
477 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
478
Olivier Houchard4fdec7a2018-10-11 17:09:14 +0200479
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200480 si_release_endpoint(&s->si[1]);
481 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200482
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200483 tasklet_free(s->si[0].wait_event.tasklet);
484 tasklet_free(s->si[1].wait_event.tasklet);
Olivier Houchardd7bd3e32018-10-18 16:22:02 +0200485
Olivier Houcharda254a372019-04-05 15:30:12 +0200486 b_free(&s->si[1].l7_buffer);
Olivier Houchard25607af2018-11-23 14:50:47 +0100487 if (must_free_sess) {
488 sess->origin = NULL;
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100489 session_free(sess);
Olivier Houchard25607af2018-11-23 14:50:47 +0100490 }
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100491
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);
498 pool_flush(pool_head_hdr_idx);
499 pool_flush(pool_head_requri);
500 pool_flush(pool_head_capture);
501 pool_flush(pool_head_stream);
502 pool_flush(pool_head_session);
503 pool_flush(pool_head_connection);
504 pool_flush(pool_head_pendconn);
505 pool_flush(fe->req_cap_pool);
506 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200507 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200508}
509
Willy Tarreau656859d2014-11-25 19:46:36 +0100510
Willy Tarreau87b09662015-04-03 00:22:06 +0200511/* Allocates a work buffer for stream <s>. It is meant to be called inside
512 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200513 * to work fine, which is the response buffer so that an error message may be
514 * built and returned. Response buffers may be allocated from the reserve, this
515 * is critical to ensure that a response may always flow and will never block a
516 * server from releasing a connection. Returns 0 in case of failure, non-zero
517 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100518 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100519static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100520{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100521 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100522 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100523 LIST_DEL(&s->buffer_wait.list);
524 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100525 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100526 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100527
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200528 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100529 return 1;
530
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100531 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100532 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100533 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100534 return 0;
535}
536
537/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100538 * update() functions. It will try to wake up as many tasks/applets as the
539 * number of buffers that it releases. In practice, most often streams are
540 * blocked on a single buffer, so it makes sense to try to wake two up when two
541 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100542 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200543void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100544{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100545 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100546
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200547 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100548 offer = 1;
549 b_free(&s->req.buf);
550 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200551 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100552 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100553 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100554 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100555
Willy Tarreaubf883e02014-11-25 21:10:35 +0100556 /* if we're certain to have at least 1 buffer available, and there is
557 * someone waiting, we can wake up a waiter and offer them.
558 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100559 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200560 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100561}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200562
Willy Tarreau87b09662015-04-03 00:22:06 +0200563void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100564{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200565 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100566 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200567 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200568 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100569 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100570
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100571 bytes = s->req.total - s->logs.bytes_in;
572 s->logs.bytes_in = s->req.total;
573 if (bytes) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100574 _HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
575 _HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100576
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100577 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100578 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200579
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200580 if (sess->listener && sess->listener->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100581 _HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200582
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100583 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200584 struct stkctr *stkctr = &s->stkctr[i];
585
Emeric Brun819fc6f2017-06-13 19:37:32 +0200586 ts = stkctr_entry(stkctr);
587 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200588 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200589 ts = stkctr_entry(stkctr);
590 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200591 continue;
592 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200593
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100594 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200595 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200596 if (ptr1)
597 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200598
Emeric Brun819fc6f2017-06-13 19:37:32 +0200599 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200600 if (ptr2)
601 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200602 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100603 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200604
605 /* If data was modified, we need to touch to re-schedule sync */
606 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200607 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100608 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100609 }
610
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100611 bytes = s->res.total - s->logs.bytes_out;
612 s->logs.bytes_out = s->res.total;
613 if (bytes) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100614 _HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
615 _HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100616
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100617 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100618 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200619
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200620 if (sess->listener && sess->listener->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100621 _HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200622
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100623 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200624 struct stkctr *stkctr = &s->stkctr[i];
625
Emeric Brun819fc6f2017-06-13 19:37:32 +0200626 ts = stkctr_entry(stkctr);
627 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200628 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200629 ts = stkctr_entry(stkctr);
630 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200631 continue;
632 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200633
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100634 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200635 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200636 if (ptr1)
637 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200638
Emeric Brun819fc6f2017-06-13 19:37:32 +0200639 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200640 if (ptr2)
641 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200642 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100643 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200644
645 /* If data was modified, we need to touch to re-schedule sync */
646 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200647 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100648 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100649 }
650}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200651
Willy Tarreaud66ed882019-06-05 18:02:04 +0200652/* This function is called with (si->state == SI_ST_CON) meaning that a
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100653 * connection was attempted and that the file descriptor is already allocated.
Willy Tarreaud66ed882019-06-05 18:02:04 +0200654 * We must check for timeout, error and abort. Possible output states are
655 * SI_ST_CER (error), SI_ST_DIS (abort), and SI_ST_CON (no change). This only
656 * works with connection-based streams. We know that there were no I/O event
657 * when reaching this function. Timeouts and errors are *not* cleared.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100658 */
Willy Tarreaud66ed882019-06-05 18:02:04 +0200659static void sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100660{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100661 struct stream_interface *si = &s->si[1];
662 struct channel *req = &s->req;
663 struct channel *rep = &s->res;
Olivier Houchard14547b22018-11-29 18:01:46 +0100664 struct conn_stream *srv_cs = objt_cs(si->end);
Willy Tarreaubf66bd12019-01-23 15:15:09 +0100665 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100666
Willy Tarreaud66ed882019-06-05 18:02:04 +0200667 /* the client might want to abort */
668 if ((rep->flags & CF_SHUTW) ||
669 ((req->flags & CF_SHUTW_NOW) &&
670 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE)))) {
671 si->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200672 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100673 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100674 if (s->srv_error)
675 s->srv_error(s, si);
Willy Tarreaud66ed882019-06-05 18:02:04 +0200676 /* Note: state = SI_ST_DIS now */
677 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100678 }
679
Willy Tarreaud66ed882019-06-05 18:02:04 +0200680 /* retryable error ? */
681 if (si->flags & (SI_FL_EXP|SI_FL_ERR)) {
682 if (!(s->flags & SF_SRV_REUSED) && conn) {
683 conn_stop_tracking(conn);
684 conn_full_close(conn);
685 }
Christopher Faulet7a3367c2019-05-09 11:46:52 +0200686
Willy Tarreaud66ed882019-06-05 18:02:04 +0200687 if (!si->err_type) {
688 if (si->flags & SI_FL_ERR)
689 si->err_type = SI_ET_CONN_ERR;
690 else
691 si->err_type = SI_ET_CONN_TO;
692 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100693
Willy Tarreaud66ed882019-06-05 18:02:04 +0200694 si->state = SI_ST_CER;
695 return;
696 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100697}
698
699/* This function is called with (si->state == SI_ST_CER) meaning that a
700 * previous connection attempt has failed and that the file descriptor
701 * has already been released. Possible causes include asynchronous error
702 * notification and time out. Possible output states are SI_ST_CLO when
703 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
704 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
705 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
Willy Tarreaud66ed882019-06-05 18:02:04 +0200706 * marked as in error state. Timeouts and errors are cleared before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100707 */
Willy Tarreaud66ed882019-06-05 18:02:04 +0200708static void sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100709{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100710 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200711 struct conn_stream *cs = objt_cs(si->end);
712 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100713
Willy Tarreaud66ed882019-06-05 18:02:04 +0200714 si->exp = TICK_ETERNITY;
715 si->flags &= ~SI_FL_EXP;
716
Willy Tarreau87b09662015-04-03 00:22:06 +0200717 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100718 if (objt_server(s->target)) {
719 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100720
Willy Tarreaue7dff022015-04-03 01:14:29 +0200721 if (s->flags & SF_CURR_SESS) {
722 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100723 _HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100724 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200725
726 if ((si->flags & SI_FL_ERR) &&
727 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
728 /* We tried to connect to a server which is configured
729 * with "verify required" and which doesn't have the
730 * "verifyhost" directive. The server presented a wrong
731 * certificate (a certificate for an unexpected name),
732 * which implies that we have used SNI in the handshake,
733 * and that the server doesn't have the associated cert
734 * and presented a default one.
735 *
736 * This is a serious enough issue not to retry. It's
737 * especially important because this wrong name might
738 * either be the result of a configuration error, and
739 * retrying will only hammer the server, or is caused
740 * by the use of a wrong SNI value, most likely
741 * provided by the client and we don't want to let the
742 * client provoke retries.
743 */
744 si->conn_retries = 0;
745 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100746 }
747
748 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200749 si->conn_retries--;
Olivier Houcharda254a372019-04-05 15:30:12 +0200750 if (si->conn_retries < 0 || !(s->be->retry_type & PR_RE_CONN_FAILED)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100751 if (!si->err_type) {
752 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100753 }
754
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100755 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100756 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
757 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100758 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100759 if (may_dequeue_tasks(objt_server(s->target), s->be))
760 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100761
762 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200763 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100764 s->req.flags |= CF_WRITE_ERROR;
765 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100766
767 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100768 if (s->srv_error)
769 s->srv_error(s, si);
Willy Tarreaud66ed882019-06-05 18:02:04 +0200770 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100771 }
772
Olivier Houchard4bd58672019-07-12 16:16:59 +0200773 stream_choose_redispatch(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100774
775 if (si->flags & SI_FL_ERR) {
776 /* The error was an asynchronous connection error, and we will
777 * likely have to retry connecting to the same server, most
778 * likely leading to the same result. To avoid this, we wait
Willy Tarreauf7a259d2019-01-23 16:29:53 +0100779 * MIN(one second, connect timeout) before retrying. We don't
780 * do it when the failure happened on a reused connection
781 * though.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100782 */
783
Willy Tarreaub0290662014-06-13 17:04:44 +0200784 int delay = 1000;
785
786 if (s->be->timeout.connect && s->be->timeout.connect < delay)
787 delay = s->be->timeout.connect;
788
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100789 if (!si->err_type)
790 si->err_type = SI_ET_CONN_ERR;
791
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200792 /* only wait when we're retrying on the same server */
Willy Tarreauf7a259d2019-01-23 16:29:53 +0100793 if ((si->state == SI_ST_ASS ||
794 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
795 (s->be->srv_act <= 1)) && !(s->flags & SF_SRV_REUSED)) {
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200796 si->state = SI_ST_TAR;
797 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
798 }
Olivier Houchard39cc0202019-04-09 19:12:51 +0200799 si->flags &= ~SI_FL_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100800 }
Willy Tarreaud66ed882019-06-05 18:02:04 +0200801}
802
803/* This function is called with (si->state == SI_ST_RDY) meaning that a
804 * connection was attempted, that the file descriptor is already allocated,
805 * and that it has succeeded. We must still check for errors and aborts.
806 * Possible output states are SI_ST_EST (established), SI_ST_CER (error),
807 * and SI_ST_DIS (abort). This only works with connection-based streams.
808 * Timeouts and errors are *not* cleared.
809 */
810static void sess_update_st_rdy_tcp(struct stream *s)
811{
812 struct stream_interface *si = &s->si[1];
813 struct channel *req = &s->req;
814 struct channel *rep = &s->res;
815 struct conn_stream *srv_cs = objt_cs(si->end);
816 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
817
818 /* We know the connection at least succeeded, though it could have
819 * since met an error for any other reason. At least it didn't time out
820 * eventhough the timeout might have been reported right after success.
821 * We need to take care of various situations here :
822 * - everything might be OK. We have to switch to established.
823 * - an I/O error might have been reported after a successful transfer,
824 * which is not retryable and needs to be logged correctly, and needs
825 * established as well
826 * - SI_ST_CON implies !CF_WROTE_DATA but not conversely as we could
827 * have validated a connection with incoming data (e.g. TCP with a
828 * banner protocol), or just a successful connect() probe.
829 * - the client might have requested a connection abort, this needs to
830 * be checked before we decide to retry anything.
831 */
832
833 /* it's still possible to handle client aborts or connection retries
834 * before any data were sent.
835 */
836 if (!(req->flags & CF_WROTE_DATA)) {
837 /* client abort ? */
838 if ((rep->flags & CF_SHUTW) ||
839 ((req->flags & CF_SHUTW_NOW) &&
840 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE)))) {
841 /* give up */
842 si->flags |= SI_FL_NOLINGER;
843 si_shutw(si);
844 si->err_type |= SI_ET_CONN_ABRT;
845 if (s->srv_error)
846 s->srv_error(s, si);
847 return;
848 }
849
850 /* retryable error ? */
851 if (si->flags & SI_FL_ERR) {
852 if (!(s->flags & SF_SRV_REUSED) && conn) {
853 conn_stop_tracking(conn);
854 conn_full_close(conn);
855 }
856
857 if (!si->err_type)
858 si->err_type = SI_ET_CONN_ERR;
859 si->state = SI_ST_CER;
860 return;
861 }
862 }
863
864 /* data were sent and/or we had no error, sess_establish() will
865 * now take over.
866 */
867 si->err_type = SI_ET_NONE;
868 si->state = SI_ST_EST;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100869}
870
871/*
872 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200873 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau4f283fa2019-06-05 14:34:03 +0200874 * 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 +0200875 * Note that it will switch the interface to SI_ST_DIS if we already have
876 * the CF_SHUTR flag, it means we were able to forward the request, and
877 * receive the response, before process_stream() had the opportunity to
878 * make the switch from SI_ST_CON to SI_ST_EST. When that happens, we want
879 * to go through sess_establish() anyway, to make sure the analysers run.
Willy Tarreaud66ed882019-06-05 18:02:04 +0200880 * Timeouts are cleared. Error are reported on the channel so that analysers
881 * can handle them.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100882 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200883static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100884{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100885 struct stream_interface *si = &s->si[1];
Willy Tarreaud66ed882019-06-05 18:02:04 +0200886 struct conn_stream *srv_cs = objt_cs(si->end);
887 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100888 struct channel *req = &s->req;
889 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100890
Willy Tarreaud66ed882019-06-05 18:02:04 +0200891 /* First, centralize the timers information, and clear any irrelevant
892 * timeout.
893 */
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100894 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud66ed882019-06-05 18:02:04 +0200895 si->exp = TICK_ETERNITY;
896 si->flags &= ~SI_FL_EXP;
897
898 /* errors faced after sending data need to be reported */
899 if (si->flags & SI_FL_ERR && req->flags & CF_WROTE_DATA) {
900 /* Don't add CF_WRITE_ERROR if we're here because
901 * early data were rejected by the server, or
902 * http_wait_for_response() will never be called
903 * to send a 425.
904 */
905 if (conn && conn->err_code != CO_ER_SSL_EARLY_FAILED)
906 req->flags |= CF_WRITE_ERROR;
907 rep->flags |= CF_READ_ERROR;
908 si->err_type = SI_ET_DATA_ERR;
909 }
910
911 /* If the request channel is waiting for the connect(), we mark the read
912 * side as attached on the response channel and we wake up it once. So
913 * it will have a chance to forward data now.
914 */
915 if (req->flags & CF_WAKE_CONNECT) {
916 req->flags |= CF_WAKE_ONCE;
917 req->flags &= ~CF_WAKE_CONNECT;
918 }
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100919
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100920 if (objt_server(s->target))
921 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100922
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100923 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100924 /* if the user wants to log as soon as possible, without counting
925 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200926 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau66425e32018-07-25 06:55:12 +0200927 /* note: no pend_pos here, session is established */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100928 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100929 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100930 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100931 }
932 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100933 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100934 }
935
Willy Tarreau0007d0a2018-12-11 18:01:38 +0100936 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100937
Willy Tarreau0007d0a2018-12-11 18:01:38 +0100938 /* Be sure to filter response headers if the backend is an HTTP proxy
939 * and if there are filters attached to the stream. */
940 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
941 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +0100942
Willy Tarreau8bb2ffb2018-11-14 17:54:13 +0100943 si_rx_endp_more(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200944 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200945 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200946 /* real connections have timeouts */
947 req->wto = s->be->timeout.server;
948 rep->rto = s->be->timeout.server;
Olivier Houchard47e9a1a2018-11-07 17:55:19 +0100949 /* The connection is now established, try to read data from the
950 * underlying layer, and subscribe to recv events. We use a
951 * delayed recv here to give a chance to the data to flow back
952 * by the time we process other tasks.
953 */
954 si_chk_rcv(si);
Willy Tarreaud04e8582010-05-31 12:31:35 +0200955 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100956 req->wex = TICK_ETERNITY;
Olivier Houchardaacc4052019-05-21 17:43:50 +0200957 /* If we managed to get the whole response, switch to SI_ST_DIS now. */
958 if (rep->flags & CF_SHUTR)
959 si->state = SI_ST_DIS;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100960}
961
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700962/* Check if the connection request is in such a state that it can be aborted. */
963static int check_req_may_abort(struct channel *req, struct stream *s)
964{
965 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100966 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Christopher Faulet769d0e92019-03-22 14:23:18 +0100967 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700968}
969
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100970/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
971 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100972 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
973 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
974 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100975 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200976static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100977{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100978 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100979 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100980 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100981
Christopher Faulet45073512018-07-20 10:16:29 +0200982 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 +0100983 now_ms, __FUNCTION__,
984 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400985 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100986 req->rex, s->res.wex,
987 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200988 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 +0100989
990 if (si->state == SI_ST_ASS) {
991 /* Server assigned to connection request, we have to try to connect now */
992 int conn_err;
993
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700994 /* Before we try to initiate the connection, see if the
995 * request may be aborted instead.
996 */
997 if (check_req_may_abort(req, s)) {
998 si->err_type |= SI_ET_CONN_ABRT;
999 goto abort_connection;
1000 }
1001
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001002 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001003 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001004
Willy Tarreaue7dff022015-04-03 01:14:29 +02001005 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01001006 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +01001007 if (srv)
1008 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -05001009 if (srv)
1010 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001011 return;
1012 }
1013
1014 /* We have received a synchronous error. We might have to
1015 * abort, retry immediately or redispatch.
1016 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001017 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001018 if (!si->err_type) {
1019 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001020 }
1021
Willy Tarreau827aee92011-03-10 16:55:02 +01001022 if (srv)
1023 srv_inc_sess_ctr(srv);
1024 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -05001025 srv_set_sess_last(srv);
1026 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001027 _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
1028 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001029
Willy Tarreau87b09662015-04-03 00:22:06 +02001030 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +01001031 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001032 if (may_dequeue_tasks(srv, s->be))
1033 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001034
1035 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001036 si_shutr(si);
1037 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001038 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001039
1040 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1041
Willy Tarreau66425e32018-07-25 06:55:12 +02001042 /* we may need to know the position in the queue for logging */
1043 pendconn_cond_unlink(s->pend_pos);
1044
Willy Tarreau87b09662015-04-03 00:22:06 +02001045 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001046 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001047 if (s->srv_error)
1048 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001049 return;
1050 }
1051
1052 /* We are facing a retryable error, but we don't want to run a
1053 * turn-around now, as the problem is likely a source port
1054 * allocation problem, so we want to retry now.
1055 */
1056 si->state = SI_ST_CER;
1057 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001058 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001059 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
1060 return;
1061 }
1062 else if (si->state == SI_ST_QUE) {
1063 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +01001064 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001065 /* The connection is not in the queue anymore. Either
1066 * we have a server connection slot available and we
1067 * go directly to the assigned state, or we need to
1068 * load-balance first and go to the INI state.
1069 */
1070 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001071 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001072 si->state = SI_ST_REQ;
1073 else {
1074 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1075 si->state = SI_ST_ASS;
1076 }
1077 return;
1078 }
1079
1080 /* Connection request still in queue... */
1081 if (si->flags & SI_FL_EXP) {
1082 /* ... and timeout expired */
1083 si->exp = TICK_ETERNITY;
Willy Tarreaud66ed882019-06-05 18:02:04 +02001084 si->flags &= ~SI_FL_EXP;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001085 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001086
1087 /* we may need to know the position in the queue for logging */
1088 pendconn_cond_unlink(s->pend_pos);
1089
Willy Tarreau827aee92011-03-10 16:55:02 +01001090 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001091 _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
1092 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +02001093 si_shutr(si);
1094 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001095 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001096 if (!si->err_type)
1097 si->err_type = SI_ET_QUEUE_TO;
1098 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001099 if (s->srv_error)
1100 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001101 return;
1102 }
1103
1104 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001105 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001106 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001107
1108 /* we may need to know the position in the queue for logging */
1109 pendconn_cond_unlink(s->pend_pos);
1110
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001111 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001112 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001113 }
1114
1115 /* Nothing changed */
1116 return;
1117 }
1118 else if (si->state == SI_ST_TAR) {
1119 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001120 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001121 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001122 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001123 }
1124
1125 if (!(si->flags & SI_FL_EXP))
1126 return; /* still in turn-around */
1127
Olivier Houchard86dcad62019-04-09 19:17:41 +02001128 si->flags &= ~SI_FL_EXP;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001129 si->exp = TICK_ETERNITY;
1130
Willy Tarreau87b09662015-04-03 00:22:06 +02001131 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001132 * marked "assigned".
1133 * FIXME: Should we force a redispatch attempt when the server is down ?
1134 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001135 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001136 si->state = SI_ST_ASS;
1137 else
1138 si->state = SI_ST_REQ;
1139 return;
1140 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001141 return;
1142
1143abort_connection:
1144 /* give up */
1145 si->exp = TICK_ETERNITY;
Willy Tarreaud66ed882019-06-05 18:02:04 +02001146 si->flags &= ~SI_FL_EXP;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001147 si_shutr(si);
1148 si_shutw(si);
1149 si->state = SI_ST_CLO;
1150 if (s->srv_error)
1151 s->srv_error(s, si);
1152 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001153}
1154
Willy Tarreau87b09662015-04-03 00:22:06 +02001155/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001156 * also counts a failed request if the server state has not reached the request
1157 * stage.
1158 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001159static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001160{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001161 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02001162 if (s->si[1].state == SI_ST_INI) {
1163 /* anything before REQ in fact */
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001164 _HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001165 if (strm_li(s) && strm_li(s)->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001166 _HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001167
Willy Tarreaue7dff022015-04-03 01:14:29 +02001168 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001169 }
1170 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001171 s->flags |= SF_FINST_Q;
Willy Tarreau4f283fa2019-06-05 14:34:03 +02001172 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 +02001173 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001174 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001175 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001176 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001177 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001178 }
1179}
1180
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001181/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001182 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1183 * a real connection to a server, indicating that a server has been assigned,
1184 * or SI_ST_EST for a successful connection to an applet. It may also return
1185 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001186 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001187static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001188{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001189 struct stream_interface *si = &s->si[1];
1190
Christopher Faulet45073512018-07-20 10:16:29 +02001191 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 +01001192 now_ms, __FUNCTION__,
1193 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001194 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001195 s->req.rex, s->res.wex,
1196 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001197 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 +01001198
1199 if (si->state != SI_ST_REQ)
1200 return;
1201
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001202 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1203 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001204 struct appctx *appctx = objt_appctx(si->end);
1205
1206 if (!appctx || appctx->applet != __objt_applet(s->target))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001207 appctx = si_register_handler(si, objt_applet(s->target));
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001208
1209 if (!appctx) {
1210 /* No more memory, let's immediately abort. Force the
1211 * error code to ignore the ERR_LOCAL which is not a
1212 * real error.
1213 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001214 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001215
1216 si_shutr(si);
1217 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001218 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001219 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001220 si->state = SI_ST_CLO;
1221 if (s->srv_error)
1222 s->srv_error(s, si);
1223 return;
1224 }
1225
Willy Tarreauee8269e2017-11-23 17:34:29 +01001226 if (tv_iszero(&s->logs.tv_request))
1227 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001228 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001229 si->state = SI_ST_EST;
1230 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001231 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001232 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001233 return;
1234 }
1235
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001236 /* Try to assign a server */
1237 if (srv_redispatch_connect(s) != 0) {
1238 /* We did not get a server. Either we queued the
1239 * connection request, or we encountered an error.
1240 */
1241 if (si->state == SI_ST_QUE)
1242 return;
1243
1244 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001245 si_shutr(si);
1246 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001247 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001248 if (!si->err_type)
1249 si->err_type = SI_ET_CONN_OTHER;
1250 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001251 if (s->srv_error)
1252 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001253 return;
1254 }
1255
1256 /* The server is assigned */
1257 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1258 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001259 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001260}
1261
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001262/* This function parses the use-service action ruleset. It executes
1263 * the associated ACL and set an applet as a stream or txn final node.
1264 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1265 * consistent state. It returns ACT_RET_STOP in succes case because
1266 * use-service must be a terminal action. Returns ACT_RET_YIELD
1267 * if the initialisation function require more data.
1268 */
1269enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1270 struct session *sess, struct stream *s, int flags)
1271
1272{
1273 struct appctx *appctx;
1274
1275 /* Initialises the applet if it is required. */
1276 if (flags & ACT_FLAG_FIRST) {
1277 /* Register applet. this function schedules the applet. */
1278 s->target = &rule->applet.obj_type;
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001279 if (unlikely(!si_register_handler(&s->si[1], objt_applet(s->target))))
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001280 return ACT_RET_ERR;
1281
1282 /* Initialise the context. */
1283 appctx = si_appctx(&s->si[1]);
1284 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1285 appctx->rule = rule;
1286 }
1287 else
1288 appctx = si_appctx(&s->si[1]);
1289
1290 /* Stops the applet sheduling, in case of the init function miss
1291 * some data.
1292 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001293 si_stop_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001294
1295 /* Call initialisation. */
1296 if (rule->applet.init)
1297 switch (rule->applet.init(appctx, px, s)) {
1298 case 0: return ACT_RET_ERR;
1299 case 1: break;
1300 default: return ACT_RET_YIELD;
1301 }
1302
Christopher Faulet2571bc62019-03-01 11:44:26 +01001303 if (rule->from != ACT_F_HTTP_REQ) {
1304 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
1305 _HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
1306
1307 /* The flag SF_ASSIGNED prevent from server assignment. */
1308 s->flags |= SF_ASSIGNED;
1309 }
1310
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001311 /* Now we can schedule the applet. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001312 si_cant_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001313 appctx_wakeup(appctx);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001314 return ACT_RET_STOP;
1315}
1316
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001317/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001318 * if appropriate. The default_backend rule is also considered, then the
1319 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001320 * It returns 1 if the processing can continue on next analysers, or zero if it
1321 * either needs more data or wants to immediately abort the request.
1322 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001323static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001324{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001325 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001326 struct session *sess = s->sess;
1327 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001328
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001329 req->analysers &= ~an_bit;
1330 req->analyse_exp = TICK_ETERNITY;
1331
Christopher Faulet45073512018-07-20 10:16:29 +02001332 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 +02001333 now_ms, __FUNCTION__,
1334 s,
1335 req,
1336 req->rex, req->wex,
1337 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001338 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001339 req->analysers);
1340
1341 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001342 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001343 struct switching_rule *rule;
1344
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001345 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001346 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001347
Willy Tarreauf51658d2014-04-23 01:21:56 +02001348 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001349 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001350 ret = acl_pass(ret);
1351 if (rule->cond->pol == ACL_COND_UNLESS)
1352 ret = !ret;
1353 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001354
1355 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001356 /* If the backend name is dynamic, try to resolve the name.
1357 * If we can't resolve the name, or if any error occurs, break
1358 * the loop and fallback to the default backend.
1359 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001360 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001361
1362 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001363 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001364
1365 tmp = alloc_trash_chunk();
1366 if (!tmp)
1367 goto sw_failed;
1368
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001369 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1370 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001371
1372 free_trash_chunk(tmp);
1373 tmp = NULL;
1374
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001375 if (!backend)
1376 break;
1377 }
1378 else
1379 backend = rule->be.backend;
1380
Willy Tarreau87b09662015-04-03 00:22:06 +02001381 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001382 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001383 break;
1384 }
1385 }
1386
1387 /* To ensure correct connection accounting on the backend, we
1388 * have to assign one if it was not set (eg: a listen). This
1389 * measure also takes care of correctly setting the default
1390 * backend if any.
1391 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001392 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001393 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001394 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001395 }
1396
Willy Tarreaufb356202010-08-03 14:02:05 +02001397 /* 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 +02001398 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001399 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1400 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001401 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001402 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001403
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001404 /* 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 +02001405 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001406 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001407 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001408 int ret = 1;
1409
1410 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001411 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 +01001412 ret = acl_pass(ret);
1413 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1414 ret = !ret;
1415 }
1416
1417 if (ret) {
1418 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001419 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001420 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001421 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001422 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001423 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001424 break;
1425 }
1426 }
1427
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001428 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001429
1430 sw_failed:
1431 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001432 channel_abort(&s->req);
1433 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001434
Willy Tarreaue7dff022015-04-03 01:14:29 +02001435 if (!(s->flags & SF_ERR_MASK))
1436 s->flags |= SF_ERR_RESOURCE;
1437 if (!(s->flags & SF_FINST_MASK))
1438 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001439
Willy Tarreaueee5b512015-04-03 23:46:31 +02001440 if (s->txn)
1441 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001442 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001443 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001444 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001445}
1446
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001447/* This stream analyser works on a request. It applies all use-server rules on
1448 * it then returns 1. The data must already be present in the buffer otherwise
1449 * they won't match. It always returns 1.
1450 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001451static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001452{
1453 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001454 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001455 struct server_rule *rule;
1456
Christopher Faulet45073512018-07-20 10:16:29 +02001457 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 +02001458 now_ms, __FUNCTION__,
1459 s,
1460 req,
1461 req->rex, req->wex,
1462 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001463 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001464 req->analysers);
1465
Willy Tarreaue7dff022015-04-03 01:14:29 +02001466 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001467 list_for_each_entry(rule, &px->server_rules, list) {
1468 int ret;
1469
Willy Tarreau192252e2015-04-04 01:47:55 +02001470 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001471 ret = acl_pass(ret);
1472 if (rule->cond->pol == ACL_COND_UNLESS)
1473 ret = !ret;
1474
1475 if (ret) {
1476 struct server *srv = rule->srv.ptr;
1477
Emeric Brun52a91d32017-08-31 14:41:55 +02001478 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001479 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001480 (s->flags & SF_FORCE_PRST)) {
1481 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001482 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001483 break;
1484 }
1485 /* if the server is not UP, let's go on with next rules
1486 * just in case another one is suited.
1487 */
1488 }
1489 }
1490 }
1491
1492 req->analysers &= ~an_bit;
1493 req->analyse_exp = TICK_ETERNITY;
1494 return 1;
1495}
1496
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001497static inline void sticking_rule_find_target(struct stream *s,
1498 struct stktable *t, struct stksess *ts)
1499{
1500 struct proxy *px = s->be;
1501 struct eb32_node *node;
1502 struct dict_entry *de;
1503 void *ptr;
1504 struct server *srv;
1505
1506 /* Look for the server name previously stored in <t> stick-table */
1507 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
1508 ptr = __stktable_data_ptr(t, ts, STKTABLE_DT_SERVER_NAME);
1509 de = stktable_data_cast(ptr, server_name);
1510 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
1511
1512 if (de) {
1513 struct ebpt_node *name;
1514
1515 name = ebis_lookup(&px->conf.used_server_name, de->value.key);
1516 if (name) {
1517 srv = container_of(name, struct server, conf.name);
1518 goto found;
1519 }
1520 }
1521
1522 /* Look for the server ID */
1523 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
1524 ptr = __stktable_data_ptr(t, ts, STKTABLE_DT_SERVER_ID);
1525 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
1526 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
1527
1528 if (!node)
1529 return;
1530
1531 srv = container_of(node, struct server, conf.id);
1532 found:
1533 if ((srv->cur_state != SRV_ST_STOPPED) ||
1534 (px->options & PR_O_PERSIST) || (s->flags & SF_FORCE_PRST)) {
1535 s->flags |= SF_DIRECT | SF_ASSIGNED;
1536 s->target = &srv->obj_type;
1537 }
1538}
1539
Emeric Brun1d33b292010-01-04 15:47:17 +01001540/* This stream analyser works on a request. It applies all sticking rules on
1541 * it then returns 1. The data must already be present in the buffer otherwise
1542 * they won't match. It always returns 1.
1543 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001544static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001545{
1546 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001547 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001548 struct sticking_rule *rule;
1549
Christopher Faulet45073512018-07-20 10:16:29 +02001550 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 +01001551 now_ms, __FUNCTION__,
1552 s,
1553 req,
1554 req->rex, req->wex,
1555 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001556 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001557 req->analysers);
1558
1559 list_for_each_entry(rule, &px->sticking_rules, list) {
1560 int ret = 1 ;
1561 int i;
1562
Willy Tarreau9667a802013-12-09 12:52:13 +01001563 /* Only the first stick store-request of each table is applied
1564 * and other ones are ignored. The purpose is to allow complex
1565 * configurations which look for multiple entries by decreasing
1566 * order of precision and to stop at the first which matches.
1567 * An example could be a store of the IP address from an HTTP
1568 * header first, then from the source if not found.
1569 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001570 for (i = 0; i < s->store_count; i++) {
1571 if (rule->table.t == s->store[i].table)
1572 break;
1573 }
1574
1575 if (i != s->store_count)
1576 continue;
1577
1578 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001579 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001580 ret = acl_pass(ret);
1581 if (rule->cond->pol == ACL_COND_UNLESS)
1582 ret = !ret;
1583 }
1584
1585 if (ret) {
1586 struct stktable_key *key;
1587
Willy Tarreau192252e2015-04-04 01:47:55 +02001588 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 +01001589 if (!key)
1590 continue;
1591
1592 if (rule->flags & STK_IS_MATCH) {
1593 struct stksess *ts;
1594
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001595 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001596 if (!(s->flags & SF_ASSIGNED))
1597 sticking_rule_find_target(s, rule->table.t, ts);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001598 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001599 }
1600 }
1601 if (rule->flags & STK_IS_STORE) {
1602 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1603 struct stksess *ts;
1604
1605 ts = stksess_new(rule->table.t, key);
1606 if (ts) {
1607 s->store[s->store_count].table = rule->table.t;
1608 s->store[s->store_count++].ts = ts;
1609 }
1610 }
1611 }
1612 }
1613 }
1614
1615 req->analysers &= ~an_bit;
1616 req->analyse_exp = TICK_ETERNITY;
1617 return 1;
1618}
1619
1620/* This stream analyser works on a response. It applies all store rules on it
1621 * then returns 1. The data must already be present in the buffer otherwise
1622 * they won't match. It always returns 1.
1623 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001624static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001625{
1626 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001627 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001628 struct sticking_rule *rule;
1629 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001630 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001631
Christopher Faulet45073512018-07-20 10:16:29 +02001632 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 +01001633 now_ms, __FUNCTION__,
1634 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001635 rep,
1636 rep->rex, rep->wex,
1637 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001638 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001639 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001640
1641 list_for_each_entry(rule, &px->storersp_rules, list) {
1642 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001643
Willy Tarreau9667a802013-12-09 12:52:13 +01001644 /* Only the first stick store-response of each table is applied
1645 * and other ones are ignored. The purpose is to allow complex
1646 * configurations which look for multiple entries by decreasing
1647 * order of precision and to stop at the first which matches.
1648 * An example could be a store of a set-cookie value, with a
1649 * fallback to a parameter found in a 302 redirect.
1650 *
1651 * The store-response rules are not allowed to override the
1652 * store-request rules for the same table, but they may coexist.
1653 * Thus we can have up to one store-request entry and one store-
1654 * response entry for the same table at any time.
1655 */
1656 for (i = nbreq; i < s->store_count; i++) {
1657 if (rule->table.t == s->store[i].table)
1658 break;
1659 }
1660
1661 /* skip existing entries for this table */
1662 if (i < s->store_count)
1663 continue;
1664
Emeric Brun1d33b292010-01-04 15:47:17 +01001665 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001666 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001667 ret = acl_pass(ret);
1668 if (rule->cond->pol == ACL_COND_UNLESS)
1669 ret = !ret;
1670 }
1671
1672 if (ret) {
1673 struct stktable_key *key;
1674
Willy Tarreau192252e2015-04-04 01:47:55 +02001675 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 +01001676 if (!key)
1677 continue;
1678
Willy Tarreau37e340c2013-12-06 23:05:21 +01001679 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001680 struct stksess *ts;
1681
1682 ts = stksess_new(rule->table.t, key);
1683 if (ts) {
1684 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001685 s->store[s->store_count++].ts = ts;
1686 }
1687 }
1688 }
1689 }
1690
1691 /* process store request and store response */
1692 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001693 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001694 void *ptr;
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001695 struct dict_entry *de;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001696
Willy Tarreauc93cd162014-05-13 15:54:22 +02001697 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001698 stksess_free(s->store[i].table, s->store[i].ts);
1699 s->store[i].ts = NULL;
1700 continue;
1701 }
1702
Emeric Brun819fc6f2017-06-13 19:37:32 +02001703 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1704 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001705 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001706 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001707 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001708 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001709
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001710 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001711 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
1712 stktable_data_cast(ptr, server_id) = __objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001713 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001714
1715 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
1716 de = dict_insert(&server_name_dict, __objt_server(s->target)->id);
1717 if (de) {
1718 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_NAME);
1719 stktable_data_cast(ptr, server_name) = de;
1720 }
1721 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
1722
Emeric Brun819fc6f2017-06-13 19:37:32 +02001723 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001724 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001725 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001726
1727 rep->analysers &= ~an_bit;
1728 rep->analyse_exp = TICK_ETERNITY;
1729 return 1;
1730}
1731
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001732/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001733 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001734 */
1735#define UPDATE_ANALYSERS(real, list, back, flag) { \
1736 list = (((list) & ~(flag)) | ~(back)) & (real); \
1737 back = real; \
1738 if (!(list)) \
1739 break; \
1740 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1741 continue; \
1742}
1743
Christopher Fauleta9215b72016-05-11 17:06:28 +02001744/* These 2 following macros call an analayzer for the specified channel if the
1745 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001746 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001747 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001748 * AN_REQ/RES_HTTP_XFER_BODY) */
1749#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1750 { \
1751 if ((list) & (flag)) { \
1752 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001753 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001754 break; \
1755 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1756 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001757 if (!flt_post_analyze((strm), (chn), (flag))) \
1758 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001759 } \
1760 else { \
1761 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1762 break; \
1763 } \
1764 UPDATE_ANALYSERS((chn)->analysers, (list), \
1765 (back), (flag)); \
1766 } \
1767 }
1768
1769#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1770 { \
1771 if ((list) & (flag)) { \
1772 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1773 break; \
1774 UPDATE_ANALYSERS((chn)->analysers, (list), \
1775 (back), (flag)); \
1776 } \
1777 }
1778
Willy Tarreau87b09662015-04-03 00:22:06 +02001779/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001780 * then puts it back to the wait queue in a clean state, or cleans up its
1781 * resources if it must be deleted. Returns in <next> the date the task wants
1782 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1783 * nothing too many times, the request and response buffers flags are monitored
1784 * and each function is called only if at least another function has changed at
1785 * least one flag it is interested in.
1786 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001787struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001788{
Willy Tarreau827aee92011-03-10 16:55:02 +01001789 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001790 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001791 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001792 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001793 unsigned int rq_prod_last, rq_cons_last;
1794 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001795 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001796 struct channel *req, *res;
1797 struct stream_interface *si_f, *si_b;
Willy Tarreau3d07a162019-04-25 19:15:20 +02001798 unsigned int rate;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001799
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001800 activity[tid].stream++;
1801
Willy Tarreau8f128b42014-11-28 15:07:47 +01001802 req = &s->req;
1803 res = &s->res;
1804
1805 si_f = &s->si[0];
1806 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001807
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001808 /* First, attempt to receive pending data from I/O layers */
Willy Tarreauade64782018-11-17 19:51:07 +01001809 si_sync_recv(si_f);
1810 si_sync_recv(si_b);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001811
Willy Tarreau3d07a162019-04-25 19:15:20 +02001812 rate = update_freq_ctr(&s->call_rate, 1);
1813 if (rate >= 100000 && s->call_rate.prev_ctr) { // make sure to wait at least a full second
1814 stream_dump_and_crash(&s->obj_type, read_freq_ctr(&s->call_rate));
1815 }
Olivier Houchardc2aa7112018-09-11 18:27:21 +02001816
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001817 //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 +01001818 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001819
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001820 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001821 if (s->txn)
1822 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001823
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001824 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001825 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1826 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001827
1828 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001829 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1830 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001831
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001832 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001833 si_f->flags |= SI_FL_DONT_WAKE;
1834 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001835
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001836 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001837 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001838
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001839 /* 1a: Check for low level timeouts if needed. We just set a flag on
1840 * stream interfaces when their timeouts have expired.
1841 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001842 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001843 si_check_timeouts(si_f);
1844 si_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001845
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001846 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001847 * for future reads or writes. Note: this will also concern upper layers
1848 * but we do not touch any other flag. We must be careful and correctly
1849 * detect state changes when calling them.
1850 */
1851
Willy Tarreau8f128b42014-11-28 15:07:47 +01001852 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001853
Willy Tarreau8f128b42014-11-28 15:07:47 +01001854 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1855 si_b->flags |= SI_FL_NOLINGER;
1856 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001857 }
1858
Willy Tarreau8f128b42014-11-28 15:07:47 +01001859 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1860 if (si_f->flags & SI_FL_NOHALF)
1861 si_f->flags |= SI_FL_NOLINGER;
1862 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001863 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001864
Willy Tarreau8f128b42014-11-28 15:07:47 +01001865 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001866
Willy Tarreau8f128b42014-11-28 15:07:47 +01001867 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1868 si_f->flags |= SI_FL_NOLINGER;
1869 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001870 }
1871
Willy Tarreau8f128b42014-11-28 15:07:47 +01001872 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1873 if (si_b->flags & SI_FL_NOHALF)
1874 si_b->flags |= SI_FL_NOLINGER;
1875 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001876 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001877
Christopher Fauleta00d8172016-11-10 14:58:05 +01001878 if (HAS_FILTERS(s))
1879 flt_stream_check_timeouts(s);
1880
Willy Tarreau798f4322012-11-08 14:49:17 +01001881 /* Once in a while we're woken up because the task expires. But
1882 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001883 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001884 * timeout needs to be refreshed.
1885 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001886 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001887 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Willy Tarreauede3d882018-10-24 17:17:56 +02001888 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001889 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001890 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001891 si_f->flags &= ~SI_FL_DONT_WAKE;
1892 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001893 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001894 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001895 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001896
Willy Tarreau829bd472019-06-06 09:17:23 +02001897 resync_stream_interface:
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001898 /* below we may emit error messages so we have to ensure that we have
1899 * our buffers properly allocated.
1900 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001901 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001902 /* No buffer available, we've been subscribed to the list of
1903 * buffer waiters, let's wait for our turn.
1904 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001905 si_f->flags &= ~SI_FL_DONT_WAKE;
1906 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001907 goto update_exp_and_leave;
1908 }
1909
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001910 /* 1b: check for low-level errors reported at the stream interface.
1911 * First we check if it's a retryable error (in which case we don't
1912 * want to tell the buffer). Otherwise we report the error one level
1913 * upper by setting flags into the buffers. Note that the side towards
1914 * the client cannot have connect (hence retryable) errors. Also, the
1915 * connection setup code must be able to deal with any type of abort.
1916 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001917 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001918 if (unlikely(si_f->flags & SI_FL_ERR)) {
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02001919 if (si_state_in(si_f->state, SI_SB_EST|SI_SB_DIS)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001920 si_shutr(si_f);
1921 si_shutw(si_f);
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001922 si_report_error(si_f);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001923 if (!(req->analysers) && !(res->analysers)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001924 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1925 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001926 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001927 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001928 if (!(s->flags & SF_ERR_MASK))
1929 s->flags |= SF_ERR_CLICL;
1930 if (!(s->flags & SF_FINST_MASK))
1931 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001932 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001933 }
1934 }
1935
Willy Tarreau8f128b42014-11-28 15:07:47 +01001936 if (unlikely(si_b->flags & SI_FL_ERR)) {
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02001937 if (si_state_in(si_b->state, SI_SB_EST|SI_SB_DIS)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001938 si_shutr(si_b);
1939 si_shutw(si_b);
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001940 si_report_error(si_b);
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001941 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001942 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001943 _HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001944 if (!(req->analysers) && !(res->analysers)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001945 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1946 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001947 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001948 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001949 if (!(s->flags & SF_ERR_MASK))
1950 s->flags |= SF_ERR_SRVCL;
1951 if (!(s->flags & SF_FINST_MASK))
1952 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001953 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001954 }
1955 /* note: maybe we should process connection errors here ? */
1956 }
1957
Willy Tarreau4f283fa2019-06-05 14:34:03 +02001958 if (si_state_in(si_b->state, SI_SB_CON|SI_SB_RDY)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001959 /* we were trying to establish a connection on the server side,
1960 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1961 */
Willy Tarreaud66ed882019-06-05 18:02:04 +02001962 if (si_b->state == SI_ST_RDY)
1963 sess_update_st_rdy_tcp(s);
1964 else if (si_b->state == SI_ST_CON)
1965 sess_update_st_con_tcp(s);
1966
1967 if (si_b->state == SI_ST_CER)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001968 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001969 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001970 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001971
1972 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1973 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1974 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1975 */
1976 }
1977
Willy Tarreau8f128b42014-11-28 15:07:47 +01001978 rq_prod_last = si_f->state;
1979 rq_cons_last = si_b->state;
1980 rp_cons_last = si_f->state;
1981 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001982
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001983 /* Check for connection closure */
1984
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001985 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001986 "[%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 +01001987 now_ms, __FUNCTION__, __LINE__,
1988 t,
1989 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001990 req, res,
1991 req->rex, res->wex,
1992 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001993 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 +01001994 si_f->err_type, si_b->err_type,
1995 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001996
1997 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001998 if (unlikely(si_f->state == SI_ST_DIS))
1999 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002000
2001 /* When a server-side connection is released, we have to count it and
2002 * check for pending connections on this server.
2003 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002004 if (unlikely(si_b->state == SI_ST_DIS)) {
2005 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002006 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01002007 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002008 if (s->flags & SF_CURR_SESS) {
2009 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002010 _HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002011 }
2012 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01002013 if (may_dequeue_tasks(srv, s->be))
2014 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002015 }
2016 }
2017
2018 /*
2019 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
2020 * at this point.
2021 */
2022
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002023 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002024 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002025 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
2026 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002027 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002028 si_f->state != rq_prod_last ||
2029 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002030 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002031 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002032
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002033 if (si_state_in(si_f->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO)) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002034 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002035 unsigned int ana_list;
2036 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002037
Willy Tarreau90deb182010-01-07 00:20:41 +01002038 /* it's up to the analysers to stop new connections,
2039 * disable reading or closing. Note: if an analyser
2040 * disables any of these bits, it is responsible for
2041 * enabling them again when it disables itself, so
2042 * that other analysers are called in similar conditions.
2043 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002044 channel_auto_read(req);
2045 channel_auto_connect(req);
2046 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01002047
2048 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002049 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01002050 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002051 * the list when not needed. Any analyser may return 0
2052 * to break out of the loop, either because of missing
2053 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002054 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002055 * analyser, and we may loop again if other analysers
2056 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002057 *
2058 * We build a list of analysers to run. We evaluate all
2059 * of these analysers in the order of the lower bit to
2060 * the higher bit. This ordering is very important.
2061 * An analyser will often add/remove other analysers,
2062 * including itself. Any changes to itself have no effect
2063 * on the loop. If it removes any other analysers, we
2064 * want those analysers not to be called anymore during
2065 * this loop. If it adds an analyser that is located
2066 * after itself, we want it to be scheduled for being
2067 * processed during the loop. If it adds an analyser
2068 * which is located before it, we want it to switch to
2069 * it immediately, even if it has already been called
2070 * once but removed since.
2071 *
2072 * In order to achieve this, we compare the analyser
2073 * list after the call with a copy of it before the
2074 * call. The work list is fed with analyser bits that
2075 * appeared during the call. Then we compare previous
2076 * work list with the new one, and check the bits that
2077 * appeared. If the lowest of these bits is lower than
2078 * the current bit, it means we have enabled a previous
2079 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01002080 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002081
Willy Tarreau8f128b42014-11-28 15:07:47 +01002082 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002083 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002084 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002085 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002086 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
2087 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
2088 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
2089 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
2090 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002091 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002092 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
2093 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
2094 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
2095 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
2096 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
2097 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
2098 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002099 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002100 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002101 ANALYZE (s, req, pcli_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002102 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
2103 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002104 break;
2105 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002106 }
Willy Tarreau84455332009-03-15 22:34:05 +01002107
Willy Tarreau8f128b42014-11-28 15:07:47 +01002108 rq_prod_last = si_f->state;
2109 rq_cons_last = si_b->state;
2110 req->flags &= ~CF_WAKE_ONCE;
2111 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002112
Willy Tarreau1ec9bb52019-06-06 14:45:26 +02002113 if ((req->flags ^ flags) & (CF_SHUTR|CF_SHUTW))
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002114 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002115 }
2116
Willy Tarreau576507f2010-01-07 00:09:04 +01002117 /* we'll monitor the request analysers while parsing the response,
2118 * because some response analysers may indirectly enable new request
2119 * analysers (eg: HTTP keep-alive).
2120 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002121 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01002122
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002123 resync_response:
2124 /* Analyse response */
2125
Willy Tarreau8f128b42014-11-28 15:07:47 +01002126 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
2127 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002128 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002129 si_f->state != rp_cons_last ||
2130 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002131 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002132 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002133
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002134 if (si_state_in(si_b->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO)) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002135 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002136 unsigned int ana_list;
2137 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002138
Willy Tarreau90deb182010-01-07 00:20:41 +01002139 /* it's up to the analysers to stop disable reading or
2140 * closing. Note: if an analyser disables any of these
2141 * bits, it is responsible for enabling them again when
2142 * it disables itself, so that other analysers are called
2143 * in similar conditions.
2144 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002145 channel_auto_read(res);
2146 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002147
2148 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002149 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002150 * to MSB. The analysers must remove themselves from
2151 * the list when not needed. Any analyser may return 0
2152 * to break out of the loop, either because of missing
2153 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002154 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002155 * analyser, and we may loop again if other analysers
2156 * are added in the middle.
2157 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002158
Willy Tarreau8f128b42014-11-28 15:07:47 +01002159 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002160 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002161 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002162 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
2163 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002164 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
2165 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
2166 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
2167 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 +01002168 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002169 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002170 ANALYZE (s, res, pcli_wait_for_response, ana_list, ana_back, AN_RES_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002171 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
2172 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002173 break;
2174 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002175 }
2176
Willy Tarreau8f128b42014-11-28 15:07:47 +01002177 rp_cons_last = si_f->state;
2178 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02002179 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002180 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002181
Willy Tarreau1ec9bb52019-06-06 14:45:26 +02002182 if ((res->flags ^ flags) & (CF_SHUTR|CF_SHUTW))
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002183 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002184 }
2185
Willy Tarreau576507f2010-01-07 00:09:04 +01002186 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002187 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002188 goto resync_request;
2189
Willy Tarreau8f128b42014-11-28 15:07:47 +01002190 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002191 goto resync_request;
2192
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002193 /* FIXME: here we should call protocol handlers which rely on
2194 * both buffers.
2195 */
2196
2197
2198 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002199 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002200 * we're just in a data phase here since it means we have not
2201 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002202 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002203 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002204 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002205 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002206 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002207 req->analysers = 0;
2208 if (req->flags & CF_READ_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002209 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2210 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002211 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002212 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002213 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002214 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002215 else if (req->flags & CF_READ_TIMEOUT) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002216 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2217 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002218 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002219 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002220 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002221 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002222 else if (req->flags & CF_WRITE_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002223 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2224 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002225 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002226 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002227 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002228 }
2229 else {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002230 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2231 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002232 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002233 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002234 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002235 }
Willy Tarreau84455332009-03-15 22:34:05 +01002236 sess_set_term_flags(s);
Christopher Faulet5e1a9d72019-04-23 17:34:22 +02002237
2238 /* Abort the request if a client error occurred while
2239 * the backend stream-interface is in the SI_ST_INI
2240 * state. It is switched into the SI_ST_CLO state and
2241 * the request channel is erased. */
2242 if (si_b->state == SI_ST_INI) {
2243 si_b->state = SI_ST_CLO;
2244 channel_abort(req);
2245 if (IS_HTX_STRM(s))
2246 channel_htx_erase(req, htxbuf(&req->buf));
2247 else
2248 channel_erase(req);
2249 }
Willy Tarreau84455332009-03-15 22:34:05 +01002250 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002251 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002252 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002253 res->analysers = 0;
2254 if (res->flags & CF_READ_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002255 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2256 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002257 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002258 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002259 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002260 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002261 else if (res->flags & CF_READ_TIMEOUT) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002262 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2263 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002264 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002265 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002266 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002267 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002268 else if (res->flags & CF_WRITE_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002269 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2270 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002271 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002272 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002273 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002274 }
2275 else {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002276 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2277 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002278 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002279 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002280 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002281 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002282 sess_set_term_flags(s);
2283 }
Willy Tarreau84455332009-03-15 22:34:05 +01002284 }
2285
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002286 /*
2287 * Here we take care of forwarding unhandled data. This also includes
2288 * connection establishments and shutdown requests.
2289 */
2290
2291
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002292 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002293 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002294 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002295 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002296 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002297 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002298 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002299 (si_state_in(si_f->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002300 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002301 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002302 * attached to it. If any data are left in, we'll permit them to
2303 * move.
2304 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002305 channel_auto_read(req);
2306 channel_auto_connect(req);
2307 channel_auto_close(req);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002308
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002309 if (IS_HTX_STRM(s)) {
2310 struct htx *htx = htxbuf(&req->buf);
2311
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002312 /* We'll let data flow between the producer (if still connected)
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002313 * to the consumer.
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002314 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002315 co_set_data(req, htx->data);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002316 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002317 channel_htx_forward_forever(req, htx);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002318 }
2319 else {
2320 /* We'll let data flow between the producer (if still connected)
2321 * to the consumer (which might possibly not be connected yet).
2322 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002323 c_adv(req, ci_data(req));
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002324 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
2325 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002326
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002327 /* Just in order to support fetching HTTP contents after start
2328 * of forwarding when the HTTP forwarding analyser is not used,
2329 * we simply reset msg->sov so that HTTP rewinding points to the
2330 * headers.
2331 */
Olivier Houchard1909f6d2018-12-06 13:28:30 +01002332 if (s->txn)
2333 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - co_data(req);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002334 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002335 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002336
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002337 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002338 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2339 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002340 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002341 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2342 (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 +01002343 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002344 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2345 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002346 (req->flags & CF_STREAMER_FAST)))) {
2347 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002348 }
2349
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002350 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002351 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002352
Willy Tarreau520d95e2009-09-19 21:04:57 +02002353 /* it's possible that an upper layer has requested a connection setup or abort.
2354 * There are 2 situations where we decide to establish a new connection :
2355 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002356 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002357 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002358 if (si_b->state == SI_ST_INI) {
Christopher Faulet5e1a9d72019-04-23 17:34:22 +02002359 if (!(req->flags & CF_SHUTW)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002360 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002361 /* If we have an appctx, there is no connect method, so we
2362 * immediately switch to the connected state, otherwise we
2363 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002364 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002365 si_b->state = SI_ST_REQ; /* new connection requested */
2366 si_b->conn_retries = s->be->conn_retries;
Olivier Houchard602bf7d2019-05-10 13:59:15 +02002367 if ((s->be->retry_type &~ PR_RE_CONN_FAILED) &&
2368 !(si_b->flags & SI_FL_D_L7_RETRY))
Olivier Houcharda254a372019-04-05 15:30:12 +02002369 si_b->flags |= SI_FL_L7_RETRY;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002370 }
Willy Tarreau73201222009-08-16 18:27:24 +02002371 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002372 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002373 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002374 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2375 channel_shutw_now(req); /* fix buffer flags upon abort */
2376 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002377 }
Willy Tarreau92795622009-03-06 12:51:23 +01002378 }
2379
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002380
2381 /* we may have a pending connection request, or a connection waiting
2382 * for completion.
2383 */
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002384 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 +02002385 /* prune the request variables and swap to the response variables. */
2386 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreaucda7f3f2018-10-28 13:44:36 +01002387 if (!LIST_ISEMPTY(&s->vars_reqres.head)) {
2388 vars_prune(&s->vars_reqres, s->sess, s);
2389 vars_init(&s->vars_reqres, SCOPE_RES);
2390 }
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002391 }
2392
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002393 do {
2394 /* nb: step 1 might switch from QUE to ASS, but we first want
2395 * to give a chance to step 2 to perform a redirect if needed.
2396 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002397 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002398 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002399 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002400 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002401
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002402 /* applets directly go to the ESTABLISHED state. Similarly,
2403 * servers experience the same fate when their connection
2404 * is reused.
2405 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002406 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002407 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002408
Willy Tarreaub44c8732013-12-31 23:16:50 +01002409 /* Now we can add the server name to a header (if requested) */
2410 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau4f283fa2019-06-05 14:34:03 +02002411 if (si_state_in(si_b->state, SI_SB_CON|SI_SB_RDY|SI_SB_EST) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002412 (s->be->server_id_hdr_name != NULL) &&
2413 (s->be->mode == PR_MODE_HTTP) &&
2414 objt_server(s->target)) {
Christopher Faulet27a3dc82018-10-23 15:34:07 +02002415 http_send_name_header(s, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002416 }
2417
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002418 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002419 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002420 http_perform_server_redirect(s, si_b);
2421 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002422 }
2423
Willy Tarreau829bd472019-06-06 09:17:23 +02002424 /* Let's see if we can send the pending request now */
2425 si_sync_send(si_b);
2426
2427 /*
2428 * Now forward all shutdown requests between both sides of the request buffer
2429 */
2430
2431 /* first, let's check if the request buffer needs to shutdown(write), which may
2432 * happen either because the input is closed or because we want to force a close
2433 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2434 * the other side's timeout as well.
2435 */
2436 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
2437 (CF_AUTO_CLOSE|CF_SHUTR))) {
2438 channel_shutw_now(req);
2439 }
2440
2441 /* shutdown(write) pending */
2442 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2443 channel_is_empty(req))) {
2444 if (req->flags & CF_READ_ERROR)
2445 si_b->flags |= SI_FL_NOLINGER;
2446 si_shutw(si_b);
2447 }
2448
2449 /* shutdown(write) done on server side, we must stop the client too */
2450 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2451 !req->analysers))
2452 channel_shutr_now(req);
2453
2454 /* shutdown(read) pending */
2455 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2456 if (si_f->flags & SI_FL_NOHALF)
2457 si_f->flags |= SI_FL_NOLINGER;
2458 si_shutr(si_f);
2459 }
2460
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002461 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau829bd472019-06-06 09:17:23 +02002462 if (si_f->state == SI_ST_DIS ||
2463 si_state_in(si_b->state, SI_SB_RDY|SI_SB_DIS) ||
2464 (si_f->flags & SI_FL_ERR && si_f->state != SI_ST_CLO) ||
2465 (si_b->flags & SI_FL_ERR && si_b->state != SI_ST_CLO))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002466 goto resync_stream_interface;
2467
Willy Tarreau815a9b22010-07-27 17:15:12 +02002468 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau1ec9bb52019-06-06 14:45:26 +02002469 if ((req->flags ^ rqf_last) & (CF_SHUTR|CF_SHUTW))
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002470 goto resync_request;
2471
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002472 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002473
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002474 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002475 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002476 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002477 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002478 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002479 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002480 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002481 si_state_in(si_b->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002482 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002483 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002484 * attached to it. If any data are left in, we'll permit them to
2485 * move.
2486 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002487 channel_auto_read(res);
2488 channel_auto_close(res);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002489
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002490 if (IS_HTX_STRM(s)) {
2491 struct htx *htx = htxbuf(&res->buf);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002492
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002493 /* We'll let data flow between the producer (if still connected)
2494 * to the consumer.
2495 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002496 co_set_data(res, htx->data);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002497 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002498 channel_htx_forward_forever(res, htx);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002499 }
2500 else {
2501 /* We'll let data flow between the producer (if still connected)
2502 * to the consumer.
2503 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002504 c_adv(res, ci_data(res));
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002505 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
2506 channel_forward_forever(res);
2507
2508 /* Just in order to support fetching HTTP contents after start
2509 * of forwarding when the HTTP forwarding analyser is not used,
2510 * we simply reset msg->sov so that HTTP rewinding points to the
2511 * headers.
2512 */
Olivier Houchard1909f6d2018-12-06 13:28:30 +01002513 if (s->txn)
2514 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - co_data(res);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002515 }
Willy Tarreau42529c32015-07-09 18:38:57 +02002516
Willy Tarreauce887fd2012-05-12 12:50:00 +02002517 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002518 * tunnel timeout set, use it now. Note that we must respect
2519 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002520 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002521 if (!req->analysers && s->be->timeout.tunnel) {
2522 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002523 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002524
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002525 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2526 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002527 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2528 res->rto = s->be->timeout.serverfin;
2529 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2530 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002531 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2532 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002533
Willy Tarreau8f128b42014-11-28 15:07:47 +01002534 req->rex = tick_add(now_ms, req->rto);
2535 req->wex = tick_add(now_ms, req->wto);
2536 res->rex = tick_add(now_ms, res->rto);
2537 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002538 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002539 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002540
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002541 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002542 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2543 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002544 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002545 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2546 (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 +01002547 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002548 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2549 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002550 (res->flags & CF_STREAMER_FAST)))) {
2551 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002552 }
2553
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002554 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002555 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002556
Willy Tarreau829bd472019-06-06 09:17:23 +02002557 /* Let's see if we can send the pending response now */
2558 si_sync_send(si_f);
2559
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002560 /*
2561 * Now forward all shutdown requests between both sides of the buffer
2562 */
2563
2564 /*
2565 * FIXME: this is probably where we should produce error responses.
2566 */
2567
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002568 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002569 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002570 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002571 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002572 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002573
2574 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002575 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2576 channel_is_empty(res))) {
2577 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002578 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002579
2580 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002581 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2582 !res->analysers)
2583 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002584
2585 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002586 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2587 if (si_b->flags & SI_FL_NOHALF)
2588 si_b->flags |= SI_FL_NOLINGER;
2589 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002590 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002591
Willy Tarreau829bd472019-06-06 09:17:23 +02002592 if (si_f->state == SI_ST_DIS ||
2593 si_state_in(si_b->state, SI_SB_RDY|SI_SB_DIS) ||
2594 (si_f->flags & SI_FL_ERR && si_f->state != SI_ST_CLO) ||
2595 (si_b->flags & SI_FL_ERR && si_b->state != SI_ST_CLO))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002596 goto resync_stream_interface;
2597
Willy Tarreau3c5c0662019-06-06 14:32:49 +02002598 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002599 goto resync_request;
2600
Willy Tarreau8f128b42014-11-28 15:07:47 +01002601 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002602 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002603
Willy Tarreau829bd472019-06-06 09:17:23 +02002604 if (((req->flags ^ rqf_last) | (res->flags ^ rpf_last)) & CF_MASK_ANALYSER)
2605 goto resync_request;
2606
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002607 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002608 si_f->flags &= ~SI_FL_DONT_WAKE;
2609 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002610
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002611 /* This is needed only when debugging is enabled, to indicate
2612 * client-side or server-side close. Please note that in the unlikely
2613 * event where both sides would close at once, the sequence is reported
2614 * on the server side first.
2615 */
2616 if (unlikely((global.mode & MODE_DEBUG) &&
2617 (!(global.mode & MODE_QUIET) ||
2618 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002619 if (si_b->state == SI_ST_CLO &&
2620 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002621 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002622 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002623 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2624 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002625 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002626 }
2627
Willy Tarreau8f128b42014-11-28 15:07:47 +01002628 if (si_f->state == SI_ST_CLO &&
2629 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002630 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002631 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002632 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2633 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002634 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002635 }
2636 }
2637
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002638 if (likely((si_f->state != SI_ST_CLO) || !si_state_in(si_b->state, SI_SB_INI|SI_SB_CLO))) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002639 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002640 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002641
Willy Tarreaud14844a2018-11-08 18:15:29 +01002642 si_update_both(si_f, si_b);
Olivier Houchard53216e72018-10-10 15:46:36 +02002643
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002644 /* Trick: if a request is being waiting for the server to respond,
2645 * and if we know the server can timeout, we don't want the timeout
2646 * to expire on the client side first, but we're still interested
2647 * in passing data from the client to the server (eg: POST). Thus,
2648 * we can cancel the client's request timeout if the server's
2649 * request timeout is set and the server has not yet sent a response.
2650 */
2651
Willy Tarreau8f128b42014-11-28 15:07:47 +01002652 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2653 (tick_isset(req->wex) || tick_isset(res->rex))) {
2654 req->flags |= CF_READ_NOEXP;
2655 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002656 }
2657
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002658 /* Reset pending events now */
2659 s->pending_events = 0;
2660
Willy Tarreau798f4322012-11-08 14:49:17 +01002661 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002662 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002663 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2664 tick_first(tick_first(req->rex, req->wex),
2665 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002666 if (!req->analysers)
2667 req->analyse_exp = TICK_ETERNITY;
2668
2669 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2670 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2671 req->analyse_exp = tick_add(now_ms, 5000);
2672
2673 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002674
Willy Tarreau9a398be2017-11-10 17:14:23 +01002675 t->expire = tick_first(t->expire, res->analyse_exp);
2676
Willy Tarreau8f128b42014-11-28 15:07:47 +01002677 if (si_f->exp)
2678 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002679
Willy Tarreau8f128b42014-11-28 15:07:47 +01002680 if (si_b->exp)
2681 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002682
Christopher Faulet56803b12017-11-24 16:06:18 +01002683 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002684 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2685 " 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 +01002686 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2687 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002688
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002689 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002690 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002691 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002692 }
2693
Willy Tarreaue7dff022015-04-03 01:14:29 +02002694 if (s->flags & SF_BE_ASSIGNED)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002695 _HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002696
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002697 if (unlikely((global.mode & MODE_DEBUG) &&
2698 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002699 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002700 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002701 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2702 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002703 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002704 }
2705
2706 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002707 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002708
Willy Tarreaueee5b512015-04-03 23:46:31 +02002709 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002710 int n;
2711
Willy Tarreaueee5b512015-04-03 23:46:31 +02002712 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002713 if (n < 1 || n > 5)
2714 n = 0;
2715
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002716 if (sess->fe->mode == PR_MODE_HTTP) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002717 _HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002718 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002719 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002720 (s->be->mode == PR_MODE_HTTP)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002721 _HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2722 _HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002723 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002724 }
2725
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002726 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002727 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002728 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002729 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreau66425e32018-07-25 06:55:12 +02002730 /* we may need to know the position in the queue */
2731 pendconn_free(s);
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002732 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002733 }
2734
Willy Tarreau87b09662015-04-03 00:22:06 +02002735 /* update time stats for this stream */
2736 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002737
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002738 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002739 stream_free(s);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002740 task_destroy(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002741 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002742}
2743
Willy Tarreau87b09662015-04-03 00:22:06 +02002744/* Update the stream's backend and server time stats */
2745void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002746{
2747 int t_request;
2748 int t_queue;
2749 int t_connect;
2750 int t_data;
2751 int t_close;
2752 struct server *srv;
2753
2754 t_request = 0;
2755 t_queue = s->logs.t_queue;
2756 t_connect = s->logs.t_connect;
2757 t_close = s->logs.t_close;
2758 t_data = s->logs.t_data;
2759
2760 if (s->be->mode != PR_MODE_HTTP)
2761 t_data = t_connect;
2762
2763 if (t_connect < 0 || t_data < 0)
2764 return;
2765
2766 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2767 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2768
2769 t_data -= t_connect;
2770 t_connect -= t_queue;
2771 t_queue -= t_request;
2772
2773 srv = objt_server(s->target);
2774 if (srv) {
2775 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2776 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2777 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2778 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2779 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002780 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002781 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2782 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2783 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2784 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002785 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002786}
2787
Willy Tarreau7c669d72008-06-20 15:04:11 +02002788/*
2789 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002790 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002791 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002792 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002793 * server.
2794 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002795void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002796{
2797 if (sess->srv_conn == newsrv)
2798 return;
2799
2800 if (sess->srv_conn) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002801 _HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
2802 _HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
2803 __ha_barrier_atomic_store();
Willy Tarreau7c669d72008-06-20 15:04:11 +02002804 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2805 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002806 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002807 }
2808
2809 if (newsrv) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002810 _HA_ATOMIC_ADD(&newsrv->served, 1);
2811 _HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
2812 __ha_barrier_atomic_store();
Willy Tarreau7c669d72008-06-20 15:04:11 +02002813 if (newsrv->proxy->lbprm.server_take_conn)
2814 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002815 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002816 }
2817}
2818
Willy Tarreau84455332009-03-15 22:34:05 +01002819/* Handle server-side errors for default protocols. It is called whenever a a
2820 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002821 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002822 * them. It's installed as ->srv_error for the server-side stream_interface.
2823 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002824void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002825{
2826 int err_type = si->err_type;
2827 int err = 0, fin = 0;
2828
2829 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002830 err = SF_ERR_CLICL;
2831 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002832 }
2833 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002834 err = SF_ERR_CLICL;
2835 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002836 }
2837 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002838 err = SF_ERR_SRVTO;
2839 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002840 }
2841 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002842 err = SF_ERR_SRVCL;
2843 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002844 }
2845 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002846 err = SF_ERR_SRVTO;
2847 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002848 }
2849 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002850 err = SF_ERR_SRVCL;
2851 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002852 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002853 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002854 err = SF_ERR_RESOURCE;
2855 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002856 }
Willy Tarreau84455332009-03-15 22:34:05 +01002857 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002858 err = SF_ERR_INTERNAL;
2859 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002860 }
2861
Willy Tarreaue7dff022015-04-03 01:14:29 +02002862 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002863 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002864 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002865 s->flags |= fin;
2866}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002867
Willy Tarreaue7dff022015-04-03 01:14:29 +02002868/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002869void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002870{
Willy Tarreau87b09662015-04-03 00:22:06 +02002871 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002872 return;
2873
Willy Tarreau87b09662015-04-03 00:22:06 +02002874 channel_shutw_now(&stream->req);
2875 channel_shutr_now(&stream->res);
2876 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002877 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002878 stream->flags |= why;
2879 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002880}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002881
Willy Tarreau5484d582019-05-22 09:33:03 +02002882/* Appends a dump of the state of stream <s> into buffer <buf> which must have
2883 * preliminary be prepared by its caller, with each line prepended by prefix
2884 * <pfx>, and each line terminated by character <eol>.
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002885 */
Willy Tarreau5484d582019-05-22 09:33:03 +02002886void stream_dump(struct buffer *buf, const struct stream *s, const char *pfx, char eol)
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002887{
2888 const struct conn_stream *csf, *csb;
2889 const struct connection *cof, *cob;
2890 const struct appctx *acf, *acb;
2891 const struct server *srv;
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002892 const char *src = "unknown";
2893 const char *dst = "unknown";
2894 char pn[INET6_ADDRSTRLEN];
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002895 const struct channel *req, *res;
2896 const struct stream_interface *si_f, *si_b;
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002897
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002898 if (!s) {
Willy Tarreau5484d582019-05-22 09:33:03 +02002899 chunk_appendf(buf, "%sstrm=%p%c", pfx, s, eol);
2900 return;
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002901 }
2902
Willy Tarreau5484d582019-05-22 09:33:03 +02002903 if (s->obj_type != OBJ_TYPE_STREAM) {
2904 chunk_appendf(buf, "%sstrm=%p [invalid type=%d(%s)]%c",
2905 pfx, s, s->obj_type, obj_type_name(&s->obj_type), eol);
2906 return;
2907 }
2908
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002909 si_f = &s->si[0];
2910 si_b = &s->si[1];
2911 req = &s->req;
2912 res = &s->res;
2913
2914 csf = objt_cs(si_f->end);
2915 cof = cs_conn(csf);
2916 acf = objt_appctx(si_f->end);
2917 if (cof && addr_to_str(&cof->addr.from, pn, sizeof(pn)) >= 0)
2918 src = pn;
2919 else if (acf)
2920 src = acf->applet->name;
2921
2922 csb = objt_cs(si_b->end);
2923 cob = cs_conn(csb);
2924 acb = objt_appctx(si_b->end);
2925 srv = objt_server(s->target);
2926 if (srv)
2927 dst = srv->id;
2928 else if (acb)
2929 dst = acb->applet->name;
2930
Willy Tarreau5484d582019-05-22 09:33:03 +02002931 chunk_appendf(buf,
2932 "%sstrm=%p src=%s fe=%s be=%s dst=%s%c"
2933 "%srqf=%x rqa=%x rpf=%x rpa=%x sif=%s,%x sib=%s,%x%c"
2934 "%saf=%p,%u csf=%p,%x%c"
2935 "%sab=%p,%u csb=%p,%x%c"
2936 "%scof=%p,%x:%s(%p)/%s(%p)/%s(%d)%c"
2937 "%scob=%p,%x:%s(%p)/%s(%p)/%s(%d)%c"
2938 "",
2939 pfx, s, src, s->sess->fe->id, s->be->id, dst, eol,
2940 pfx, req->flags, req->analysers, res->flags, res->analysers,
2941 si_state_str(si_f->state), si_f->flags,
2942 si_state_str(si_b->state), si_b->flags, eol,
2943 pfx, acf, acf ? acf->st0 : 0, csf, csf ? csf->flags : 0, eol,
2944 pfx, acb, acb ? acb->st0 : 0, csb, csb ? csb->flags : 0, eol,
2945 pfx, cof, cof ? cof->flags : 0, conn_get_mux_name(cof), cof?cof->ctx:0, conn_get_xprt_name(cof),
2946 cof ? cof->xprt_ctx : 0, conn_get_ctrl_name(cof), cof ? cof->handle.fd : 0, eol,
2947 pfx, cob, cob ? cob->flags : 0, conn_get_mux_name(cob), cob?cob->ctx:0, conn_get_xprt_name(cob),
2948 cob ? cob->xprt_ctx : 0, conn_get_ctrl_name(cob), cob ? cob->handle.fd : 0, eol);
2949}
2950
2951/* dumps an error message for type <type> at ptr <ptr> related to stream <s>,
Willy Tarreaub106ce12019-05-22 08:57:01 +02002952 * having reached loop rate <rate>, then aborts hoping to retrieve a core.
Willy Tarreau5484d582019-05-22 09:33:03 +02002953 */
2954void stream_dump_and_crash(enum obj_type *obj, int rate)
2955{
2956 const struct stream *s;
Willy Tarreau5484d582019-05-22 09:33:03 +02002957 char *msg = NULL;
2958 const void *ptr;
2959
2960 ptr = s = objt_stream(obj);
2961 if (!s) {
2962 const struct appctx *appctx = objt_appctx(obj);
2963 if (!appctx)
2964 return;
2965 ptr = appctx;
2966 s = si_strm(appctx->owner);
2967 if (!s)
2968 return;
2969 }
2970
Willy Tarreau5484d582019-05-22 09:33:03 +02002971 chunk_reset(&trash);
2972 stream_dump(&trash, s, "", ' ');
Willy Tarreaub106ce12019-05-22 08:57:01 +02002973 memprintf(&msg,
2974 "A bogus %s [%p] is spinning at %d calls per second and refuses to die, "
2975 "aborting now! Please report this error to developers "
2976 "[%s]\n",
Willy Tarreau5484d582019-05-22 09:33:03 +02002977 obj_type_name(obj), ptr, rate, trash.area);
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002978
2979 ha_alert("%s", msg);
2980 send_log(NULL, LOG_EMERG, "%s", msg);
2981 abort();
2982}
2983
Willy Tarreau8b22a712010-06-18 17:46:06 +02002984/************************************************************************/
2985/* All supported ACL keywords must be declared here. */
2986/************************************************************************/
2987
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002988/* 0=OK, <0=Alert, >0=Warning */
2989static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2990 struct proxy *px, struct act_rule *rule,
2991 char **err)
2992{
2993 struct action_kw *kw;
2994
2995 /* Check if the service name exists. */
2996 if (*(args[*cur_arg]) == 0) {
2997 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002998 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002999 }
3000
3001 /* lookup for keyword corresponding to a service. */
3002 kw = action_lookup(&service_keywords, args[*cur_arg]);
3003 if (!kw) {
3004 memprintf(err, "'%s' unknown service name.", args[1]);
3005 return ACT_RET_PRS_ERR;
3006 }
3007 (*cur_arg)++;
3008
3009 /* executes specific rule parser. */
3010 rule->kw = kw;
3011 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
3012 return ACT_RET_PRS_ERR;
3013
3014 /* Register processing function. */
3015 rule->action_ptr = process_use_service;
3016 rule->action = ACT_CUSTOM;
3017
3018 return ACT_RET_PRS_OK;
3019}
3020
3021void service_keywords_register(struct action_kw_list *kw_list)
3022{
3023 LIST_ADDQ(&service_keywords, &kw_list->list);
3024}
3025
Willy Tarreau679bba12019-03-19 08:08:10 +01003026/* Lists the known services on <out> */
3027void list_services(FILE *out)
3028{
3029 struct action_kw_list *kw_list;
3030 int found = 0;
3031 int i;
3032
3033 fprintf(out, "Available services :");
3034 list_for_each_entry(kw_list, &service_keywords, list) {
3035 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
3036 if (!found)
3037 fputc('\n', out);
3038 found = 1;
3039 fprintf(out, "\t%s\n", kw_list->kw[i].kw);
3040 }
3041 }
3042 if (!found)
3043 fprintf(out, " none\n");
3044}
William Lallemand4c5b4d52016-11-21 08:51:11 +01003045
3046/* This function dumps a complete stream state onto the stream interface's
3047 * read buffer. The stream has to be set in strm. It returns 0 if the output
3048 * buffer is full and it needs to be called again, otherwise non-zero. It is
3049 * designed to be called from stats_dump_strm_to_buffer() below.
3050 */
3051static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
3052{
3053 struct appctx *appctx = __objt_appctx(si->end);
3054 struct tm tm;
3055 extern const char *monthname[12];
3056 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003057 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003058 struct connection *conn;
3059 struct appctx *tmpctx;
3060
3061 chunk_reset(&trash);
3062
3063 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
3064 /* stream changed, no need to go any further */
3065 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreaue6e52362019-01-04 17:42:57 +01003066 if (ci_putchk(si_ic(si), &trash) == -1)
3067 goto full;
3068 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003069 }
3070
3071 switch (appctx->ctx.sess.section) {
3072 case 0: /* main status of the stream */
3073 appctx->ctx.sess.uid = strm->uniq_id;
3074 appctx->ctx.sess.section = 1;
3075 /* fall through */
3076
3077 case 1:
3078 get_localtime(strm->logs.accept_date.tv_sec, &tm);
3079 chunk_appendf(&trash,
3080 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
3081 strm,
3082 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
3083 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
3084 strm->uniq_id,
3085 strm_li(strm) ? strm_li(strm)->proto->name : "?");
3086
3087 conn = objt_conn(strm_orig(strm));
3088 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3089 case AF_INET:
3090 case AF_INET6:
3091 chunk_appendf(&trash, " source=%s:%d\n",
3092 pn, get_host_port(&conn->addr.from));
3093 break;
3094 case AF_UNIX:
3095 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
3096 break;
3097 default:
3098 /* no more information to print right now */
3099 chunk_appendf(&trash, "\n");
3100 break;
3101 }
3102
3103 chunk_appendf(&trash,
Willy Tarreauadf7a152019-01-07 10:10:07 +01003104 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p waiting=%d\n",
3105 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos,
3106 !LIST_ISEMPTY(&strm->buffer_wait.list));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003107
3108 chunk_appendf(&trash,
3109 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
3110 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
3111 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
3112 strm_li(strm) ? strm_li(strm)->luid : 0);
3113
3114 if (conn)
3115 conn_get_to_addr(conn);
3116
3117 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
3118 case AF_INET:
3119 case AF_INET6:
3120 chunk_appendf(&trash, " addr=%s:%d\n",
3121 pn, get_host_port(&conn->addr.to));
3122 break;
3123 case AF_UNIX:
3124 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
3125 break;
3126 default:
3127 /* no more information to print right now */
3128 chunk_appendf(&trash, "\n");
3129 break;
3130 }
3131
3132 if (strm->be->cap & PR_CAP_BE)
3133 chunk_appendf(&trash,
3134 " backend=%s (id=%u mode=%s)",
3135 strm->be->id,
3136 strm->be->uuid, strm->be->mode ? "http" : "tcp");
3137 else
3138 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
3139
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003140 cs = objt_cs(strm->si[1].end);
3141 conn = cs_conn(cs);
3142
William Lallemand4c5b4d52016-11-21 08:51:11 +01003143 if (conn)
3144 conn_get_from_addr(conn);
3145
3146 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3147 case AF_INET:
3148 case AF_INET6:
3149 chunk_appendf(&trash, " addr=%s:%d\n",
3150 pn, get_host_port(&conn->addr.from));
3151 break;
3152 case AF_UNIX:
3153 chunk_appendf(&trash, " addr=unix\n");
3154 break;
3155 default:
3156 /* no more information to print right now */
3157 chunk_appendf(&trash, "\n");
3158 break;
3159 }
3160
3161 if (strm->be->cap & PR_CAP_BE)
3162 chunk_appendf(&trash,
3163 " server=%s (id=%u)",
3164 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
3165 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
3166 else
3167 chunk_appendf(&trash, " server=<NONE> (id=-1)");
3168
3169 if (conn)
3170 conn_get_to_addr(conn);
3171
3172 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
3173 case AF_INET:
3174 case AF_INET6:
3175 chunk_appendf(&trash, " addr=%s:%d\n",
3176 pn, get_host_port(&conn->addr.to));
3177 break;
3178 case AF_UNIX:
3179 chunk_appendf(&trash, " addr=unix\n");
3180 break;
3181 default:
3182 /* no more information to print right now */
3183 chunk_appendf(&trash, "\n");
3184 break;
3185 }
3186
3187 chunk_appendf(&trash,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003188 " task=%p (state=0x%02x nice=%d calls=%u rate=%u exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003189 strm->task,
3190 strm->task->state,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003191 strm->task->nice, strm->task->calls, read_freq_ctr(&strm->call_rate),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003192 strm->task->expire ?
3193 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
3194 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
3195 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01003196 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003197 task_in_rq(strm->task) ? ", running" : "");
3198
3199 chunk_appendf(&trash,
3200 " age=%s)\n",
3201 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
3202
3203 if (strm->txn)
3204 chunk_appendf(&trash,
Willy Tarreau7778b592019-01-07 10:38:10 +01003205 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s\n"
3206 " req.f=0x%02x blen=%llu chnk=%llu next=%u\n"
3207 " rsp.f=0x%02x blen=%llu chnk=%llu next=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003208 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau7778b592019-01-07 10:38:10 +01003209 h1_msg_state_str(strm->txn->req.msg_state), h1_msg_state_str(strm->txn->rsp.msg_state),
3210 strm->txn->req.flags, strm->txn->req.body_len, strm->txn->req.chunk_len, strm->txn->req.next,
3211 strm->txn->rsp.flags, strm->txn->rsp.body_len, strm->txn->rsp.chunk_len, strm->txn->rsp.next);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003212
3213 chunk_appendf(&trash,
Christopher Faulet224a2d72019-01-04 15:06:13 +01003214 " 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 +01003215 &strm->si[0],
3216 si_state_str(strm->si[0].state),
3217 strm->si[0].flags,
3218 obj_type_name(strm->si[0].end),
3219 obj_base_ptr(strm->si[0].end),
3220 strm->si[0].exp ?
3221 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
3222 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
3223 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Faulet224a2d72019-01-04 15:06:13 +01003224 strm->si[0].err_type, strm->si[0].wait_event.events);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003225
3226 chunk_appendf(&trash,
Christopher Faulet224a2d72019-01-04 15:06:13 +01003227 " 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 +01003228 &strm->si[1],
3229 si_state_str(strm->si[1].state),
3230 strm->si[1].flags,
3231 obj_type_name(strm->si[1].end),
3232 obj_base_ptr(strm->si[1].end),
3233 strm->si[1].exp ?
3234 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
3235 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
3236 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Faulet224a2d72019-01-04 15:06:13 +01003237 strm->si[1].err_type, strm->si[1].wait_event.events);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003238
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003239 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
3240 conn = cs->conn;
3241
William Lallemand4c5b4d52016-11-21 08:51:11 +01003242 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003243 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003244 conn,
3245 conn_get_ctrl_name(conn),
3246 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003247 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003248 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003249 obj_type_name(conn->target),
3250 obj_base_ptr(conn->target));
3251
3252 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01003253 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d fd.tmask=0x%lx\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003254 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003255 conn->handle.fd,
3256 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01003257 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003258 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003259 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
Willy Tarreaufb3b1b02018-12-18 14:28:24 +01003260
3261 chunk_appendf(&trash, " cs=%p csf=0x%08x ctx=%p\n", cs, cs->flags, cs->ctx);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003262 }
3263 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
3264 chunk_appendf(&trash,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003265 " 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 +01003266 tmpctx,
3267 tmpctx->st0,
3268 tmpctx->st1,
3269 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003270 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003271 tmpctx->thread_mask,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003272 tmpctx->t->nice, tmpctx->t->calls, read_freq_ctr(&tmpctx->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003273 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003274 }
3275
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003276 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
3277 conn = cs->conn;
3278
William Lallemand4c5b4d52016-11-21 08:51:11 +01003279 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003280 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003281 conn,
3282 conn_get_ctrl_name(conn),
3283 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003284 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003285 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003286 obj_type_name(conn->target),
3287 obj_base_ptr(conn->target));
3288
3289 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01003290 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d fd.tmask=0x%lx\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003291 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003292 conn->handle.fd,
3293 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01003294 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003295 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003296 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
Willy Tarreaufb3b1b02018-12-18 14:28:24 +01003297
3298 chunk_appendf(&trash, " cs=%p csf=0x%08x ctx=%p\n", cs, cs->flags, cs->ctx);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003299 }
3300 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
3301 chunk_appendf(&trash,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003302 " 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 +01003303 tmpctx,
3304 tmpctx->st0,
3305 tmpctx->st1,
3306 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003307 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003308 tmpctx->thread_mask,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003309 tmpctx->t->nice, tmpctx->t->calls, read_freq_ctr(&tmpctx->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003310 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003311 }
3312
3313 chunk_appendf(&trash,
3314 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3315 " an_exp=%s",
3316 &strm->req,
3317 strm->req.flags, strm->req.analysers,
3318 strm->req.pipe ? strm->req.pipe->data : 0,
3319 strm->req.to_forward, strm->req.total,
3320 strm->req.analyse_exp ?
3321 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
3322 TICKS_TO_MS(1000)) : "<NEVER>");
3323
3324 chunk_appendf(&trash,
3325 " rex=%s",
3326 strm->req.rex ?
3327 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
3328 TICKS_TO_MS(1000)) : "<NEVER>");
3329
3330 chunk_appendf(&trash,
3331 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003332 " buf=%p data=%p o=%u p=%u req.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003333 strm->req.wex ?
3334 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
3335 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003336 &strm->req.buf,
3337 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003338 (unsigned int)ci_head_ofs(&strm->req),
Willy Tarreau591d4452018-06-15 17:21:00 +02003339 strm->txn ? strm->txn->req.next : 0, (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003340 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003341
Christopher Fauletb9af8812019-01-04 14:30:44 +01003342 if (IS_HTX_STRM(strm)) {
3343 struct htx *htx = htxbuf(&strm->req.buf);
3344
3345 chunk_appendf(&trash,
Willy Tarreaub84e67f2019-01-07 10:01:34 +01003346 " htx=%p flags=0x%x size=%u data=%u used=%u wrap=%s extra=%llu\n",
3347 htx, htx->flags, htx->size, htx->data, htx->used,
Christopher Faulet28f29c72019-04-30 17:55:45 +02003348 (htx->tail >= htx->head) ? "NO" : "YES",
Christopher Fauletb9af8812019-01-04 14:30:44 +01003349 (unsigned long long)htx->extra);
3350 }
3351
William Lallemand4c5b4d52016-11-21 08:51:11 +01003352 chunk_appendf(&trash,
3353 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3354 " an_exp=%s",
3355 &strm->res,
3356 strm->res.flags, strm->res.analysers,
3357 strm->res.pipe ? strm->res.pipe->data : 0,
3358 strm->res.to_forward, strm->res.total,
3359 strm->res.analyse_exp ?
3360 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
3361 TICKS_TO_MS(1000)) : "<NEVER>");
3362
3363 chunk_appendf(&trash,
3364 " rex=%s",
3365 strm->res.rex ?
3366 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3367 TICKS_TO_MS(1000)) : "<NEVER>");
3368
3369 chunk_appendf(&trash,
3370 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003371 " buf=%p data=%p o=%u p=%u rsp.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003372 strm->res.wex ?
3373 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3374 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003375 &strm->res.buf,
3376 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003377 (unsigned int)ci_head_ofs(&strm->res),
Willy Tarreau591d4452018-06-15 17:21:00 +02003378 strm->txn ? strm->txn->rsp.next : 0, (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003379 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003380
Christopher Fauletb9af8812019-01-04 14:30:44 +01003381 if (IS_HTX_STRM(strm)) {
3382 struct htx *htx = htxbuf(&strm->res.buf);
3383
3384 chunk_appendf(&trash,
3385 " htx=%p flags=0x%x size=%u data=%u used=%u wrap=%s extra=%llu\n",
3386 htx, htx->flags, htx->size, htx->data, htx->used,
Christopher Faulet28f29c72019-04-30 17:55:45 +02003387 (htx->tail >= htx->head) ? "NO" : "YES",
Christopher Fauletb9af8812019-01-04 14:30:44 +01003388 (unsigned long long)htx->extra);
3389 }
3390
Willy Tarreaue6e52362019-01-04 17:42:57 +01003391 if (ci_putchk(si_ic(si), &trash) == -1)
3392 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003393
3394 /* use other states to dump the contents */
3395 }
3396 /* end of dump */
Willy Tarreaue6e52362019-01-04 17:42:57 +01003397 done:
William Lallemand4c5b4d52016-11-21 08:51:11 +01003398 appctx->ctx.sess.uid = 0;
3399 appctx->ctx.sess.section = 0;
3400 return 1;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003401 full:
3402 return 0;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003403}
3404
3405
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003406static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003407{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003408 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3409 return 1;
3410
3411 if (*args[2] && strcmp(args[2], "all") == 0)
3412 appctx->ctx.sess.target = (void *)-1;
3413 else if (*args[2])
3414 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3415 else
3416 appctx->ctx.sess.target = NULL;
3417 appctx->ctx.sess.section = 0; /* start with stream status */
3418 appctx->ctx.sess.pos = 0;
3419
3420 return 0;
3421}
3422
3423/* This function dumps all streams' states onto the stream interface's
3424 * read buffer. It returns 0 if the output buffer is full and it needs
Willy Tarreaue6e52362019-01-04 17:42:57 +01003425 * to be called again, otherwise non-zero. It proceeds in an isolated
3426 * thread so there is no thread safety issue here.
William Lallemand4c5b4d52016-11-21 08:51:11 +01003427 */
3428static int cli_io_handler_dump_sess(struct appctx *appctx)
3429{
3430 struct stream_interface *si = appctx->owner;
3431 struct connection *conn;
3432
Willy Tarreaue6e52362019-01-04 17:42:57 +01003433 thread_isolate();
3434
William Lallemand4c5b4d52016-11-21 08:51:11 +01003435 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3436 /* If we're forced to shut down, we might have to remove our
3437 * reference to the last stream being dumped.
3438 */
3439 if (appctx->st2 == STAT_ST_LIST) {
3440 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3441 LIST_DEL(&appctx->ctx.sess.bref.users);
3442 LIST_INIT(&appctx->ctx.sess.bref.users);
3443 }
3444 }
Willy Tarreaue6e52362019-01-04 17:42:57 +01003445 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003446 }
3447
3448 chunk_reset(&trash);
3449
3450 switch (appctx->st2) {
3451 case STAT_ST_INIT:
3452 /* the function had not been called yet, let's prepare the
3453 * buffer for a response. We initialize the current stream
3454 * pointer to the first in the global list. When a target
3455 * stream is being destroyed, it is responsible for updating
3456 * this pointer. We know we have reached the end when this
3457 * pointer points back to the head of the streams list.
3458 */
3459 LIST_INIT(&appctx->ctx.sess.bref.users);
3460 appctx->ctx.sess.bref.ref = streams.n;
3461 appctx->st2 = STAT_ST_LIST;
3462 /* fall through */
3463
3464 case STAT_ST_LIST:
3465 /* first, let's detach the back-ref from a possible previous stream */
3466 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3467 LIST_DEL(&appctx->ctx.sess.bref.users);
3468 LIST_INIT(&appctx->ctx.sess.bref.users);
3469 }
3470
3471 /* and start from where we stopped */
3472 while (appctx->ctx.sess.bref.ref != &streams) {
3473 char pn[INET6_ADDRSTRLEN];
3474 struct stream *curr_strm;
3475
3476 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3477
3478 if (appctx->ctx.sess.target) {
3479 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3480 goto next_sess;
3481
3482 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3483 /* call the proper dump() function and return if we're missing space */
Willy Tarreaue6e52362019-01-04 17:42:57 +01003484 if (!stats_dump_full_strm_to_buffer(si, curr_strm))
3485 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003486
3487 /* stream dump complete */
3488 LIST_DEL(&appctx->ctx.sess.bref.users);
3489 LIST_INIT(&appctx->ctx.sess.bref.users);
3490 if (appctx->ctx.sess.target != (void *)-1) {
3491 appctx->ctx.sess.target = NULL;
3492 break;
3493 }
3494 else
3495 goto next_sess;
3496 }
3497
3498 chunk_appendf(&trash,
3499 "%p: proto=%s",
3500 curr_strm,
3501 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3502
3503 conn = objt_conn(strm_orig(curr_strm));
3504 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3505 case AF_INET:
3506 case AF_INET6:
3507 chunk_appendf(&trash,
3508 " src=%s:%d fe=%s be=%s srv=%s",
3509 pn,
3510 get_host_port(&conn->addr.from),
3511 strm_fe(curr_strm)->id,
3512 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3513 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3514 );
3515 break;
3516 case AF_UNIX:
3517 chunk_appendf(&trash,
3518 " src=unix:%d fe=%s be=%s srv=%s",
3519 strm_li(curr_strm)->luid,
3520 strm_fe(curr_strm)->id,
3521 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3522 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3523 );
3524 break;
3525 }
3526
3527 chunk_appendf(&trash,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003528 " ts=%02x age=%s calls=%u rate=%u cpu=%llu lat=%llu",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003529 curr_strm->task->state,
3530 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003531 curr_strm->task->calls, read_freq_ctr(&curr_strm->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003532 (unsigned long long)curr_strm->task->cpu_time, (unsigned long long)curr_strm->task->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003533
3534 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003535 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003536 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003537 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003538 curr_strm->req.analysers,
3539 curr_strm->req.rex ?
3540 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3541 TICKS_TO_MS(1000)) : "");
3542
3543 chunk_appendf(&trash,
3544 ",wx=%s",
3545 curr_strm->req.wex ?
3546 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3547 TICKS_TO_MS(1000)) : "");
3548
3549 chunk_appendf(&trash,
3550 ",ax=%s]",
3551 curr_strm->req.analyse_exp ?
3552 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3553 TICKS_TO_MS(1000)) : "");
3554
3555 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003556 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003557 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003558 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003559 curr_strm->res.analysers,
3560 curr_strm->res.rex ?
3561 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3562 TICKS_TO_MS(1000)) : "");
3563
3564 chunk_appendf(&trash,
3565 ",wx=%s",
3566 curr_strm->res.wex ?
3567 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3568 TICKS_TO_MS(1000)) : "");
3569
3570 chunk_appendf(&trash,
3571 ",ax=%s]",
3572 curr_strm->res.analyse_exp ?
3573 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3574 TICKS_TO_MS(1000)) : "");
3575
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003576 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003577 chunk_appendf(&trash,
3578 " s0=[%d,%1xh,fd=%d,ex=%s]",
3579 curr_strm->si[0].state,
3580 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003581 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003582 curr_strm->si[0].exp ?
3583 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3584 TICKS_TO_MS(1000)) : "");
3585
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003586 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003587 chunk_appendf(&trash,
3588 " s1=[%d,%1xh,fd=%d,ex=%s]",
3589 curr_strm->si[1].state,
3590 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003591 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003592 curr_strm->si[1].exp ?
3593 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3594 TICKS_TO_MS(1000)) : "");
3595
3596 chunk_appendf(&trash,
3597 " exp=%s",
3598 curr_strm->task->expire ?
3599 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3600 TICKS_TO_MS(1000)) : "");
3601 if (task_in_rq(curr_strm->task))
3602 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3603
3604 chunk_appendf(&trash, "\n");
3605
Willy Tarreau06d80a92017-10-19 14:32:15 +02003606 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003607 /* let's try again later from this stream. We add ourselves into
3608 * this stream's users so that it can remove us upon termination.
3609 */
William Lallemand4c5b4d52016-11-21 08:51:11 +01003610 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Willy Tarreaue6e52362019-01-04 17:42:57 +01003611 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003612 }
3613
3614 next_sess:
3615 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3616 }
3617
3618 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3619 /* specified stream not found */
3620 if (appctx->ctx.sess.section > 0)
3621 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3622 else
3623 chunk_appendf(&trash, "Session not found.\n");
3624
Willy Tarreaue6e52362019-01-04 17:42:57 +01003625 if (ci_putchk(si_ic(si), &trash) == -1)
3626 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003627
3628 appctx->ctx.sess.target = NULL;
3629 appctx->ctx.sess.uid = 0;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003630 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003631 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003632 /* fall through */
3633
3634 default:
3635 appctx->st2 = STAT_ST_FIN;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003636 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003637 }
Willy Tarreaue6e52362019-01-04 17:42:57 +01003638 done:
3639 thread_release();
3640 return 1;
3641 full:
3642 thread_release();
3643 si_rx_room_blk(si);
3644 return 0;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003645}
3646
3647static void cli_release_show_sess(struct appctx *appctx)
3648{
3649 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003650 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003651 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3652 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003653 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003654 }
3655}
3656
Willy Tarreau61b65212016-11-24 11:09:25 +01003657/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003658static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003659{
3660 struct stream *strm, *ptr;
3661
3662 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3663 return 1;
3664
3665 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003666 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003667 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003668 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003669 return 1;
3670 }
3671
3672 ptr = (void *)strtoul(args[2], NULL, 0);
3673
3674 /* first, look for the requested stream in the stream table */
3675 list_for_each_entry(strm, &streams, list) {
3676 if (strm == ptr)
3677 break;
3678 }
3679
3680 /* do we have the stream ? */
3681 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003682 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003683 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003684 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003685 return 1;
3686 }
3687
3688 stream_shutdown(strm, SF_ERR_KILLED);
3689 return 1;
3690}
3691
Willy Tarreau4e46b622016-11-23 16:50:48 +01003692/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003693static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003694{
3695 struct server *sv;
3696 struct stream *strm, *strm_bck;
3697
3698 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3699 return 1;
3700
3701 sv = cli_find_server(appctx, args[3]);
3702 if (!sv)
3703 return 1;
3704
3705 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003706 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003707 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3708 if (strm->srv_conn == sv)
3709 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003710 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003711 return 1;
3712}
3713
William Lallemand4c5b4d52016-11-21 08:51:11 +01003714/* register cli keywords */
3715static struct cli_kw_list cli_kws = {{ },{
3716 { { "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 +01003717 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003718 { { "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 +01003719 {{},}
3720}};
3721
Willy Tarreau0108d902018-11-25 19:14:37 +01003722INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
3723
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003724/* main configuration keyword registration. */
3725static struct action_kw_list stream_tcp_keywords = { ILH, {
3726 { "use-service", stream_parse_use_service },
3727 { /* END */ }
3728}};
3729
Willy Tarreau0108d902018-11-25 19:14:37 +01003730INITCALL1(STG_REGISTER, tcp_req_cont_keywords_register, &stream_tcp_keywords);
3731
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003732static struct action_kw_list stream_http_keywords = { ILH, {
3733 { "use-service", stream_parse_use_service },
3734 { /* END */ }
3735}};
3736
Willy Tarreau0108d902018-11-25 19:14:37 +01003737INITCALL1(STG_REGISTER, http_req_keywords_register, &stream_http_keywords);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003738
Willy Tarreaubaaee002006-06-26 02:48:02 +02003739/*
3740 * Local variables:
3741 * c-indent-level: 8
3742 * c-basic-offset: 8
3743 * End:
3744 */