blob: 0be17572514e9fec79581add974943f33c59f2e8 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
Willy Tarreau87b09662015-04-03 00:22:06 +02002 * Stream management functions.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003 *
Willy Tarreaud28c3532012-04-19 19:28:33 +02004 * Copyright 2000-2012 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <stdlib.h>
Willy Tarreau81f9aa32010-06-01 17:45:26 +020014#include <unistd.h>
15#include <fcntl.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020016
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020017#include <common/cfgparse.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020018#include <common/config.h>
Willy Tarreau9b28e032012-10-12 23:49:43 +020019#include <common/buffer.h>
Willy Tarreau7c669d72008-06-20 15:04:11 +020020#include <common/debug.h>
Christopher Faulet8d8aa0d2017-05-30 15:36:50 +020021#include <common/hathreads.h>
Willy Tarreaub96b77e2018-12-11 10:22:41 +010022#include <common/htx.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010023#include <common/initcall.h>
24#include <common/memory.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020025
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020026#include <types/applet.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020027#include <types/capture.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010028#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020029#include <types/filters.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010030#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010031#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020032
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020033#include <proto/acl.h>
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020034#include <proto/action.h>
Willy Tarreau609aad92018-11-22 08:31:09 +010035#include <proto/activity.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020036#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010037#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020038#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010039#include <proto/checks.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010040#include <proto/cli.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020041#include <proto/connection.h>
Frédéric Lécaille03cdf552019-05-20 10:08:27 +020042#include <proto/dict.h>
Baptiste Assmann333939c2019-01-21 08:34:50 +010043#include <proto/dns.h>
William Lallemand9ed62032016-11-21 17:49:11 +010044#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020045#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020046#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020047#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020048#include <proto/frontend.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010049#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +020050#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020051#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020052#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020053#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020054#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020055#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010056#include <proto/pipe.h>
Christopher Fauletfc9cfe42019-07-16 14:54:53 +020057#include <proto/http_ana.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020058#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020059#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010060#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020061#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010062#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010063#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010064#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010065#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020066#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020067
Willy Tarreau8ceae722018-11-26 11:58:30 +010068DECLARE_POOL(pool_head_stream, "stream", sizeof(struct stream));
69
Willy Tarreaub6b3df32018-11-26 16:31:20 +010070struct list streams = LIST_HEAD_INIT(streams);
Willy Tarreau86abe442018-11-25 20:12:18 +010071__decl_spinlock(streams_lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +020072
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020073/* List of all use-service keywords. */
74static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
75
Willy Tarreau5790eb02017-08-28 17:18:36 +020076
77/* Create a new stream for connection <conn>. Return < 0 on error. This is only
78 * valid right after the handshake, before the connection's data layer is
79 * initialized, because it relies on the session to be in conn->owner.
80 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +020081int stream_create_from_cs(struct conn_stream *cs)
Willy Tarreau5790eb02017-08-28 17:18:36 +020082{
83 struct stream *strm;
84
Olivier Houchard9aaf7782017-09-13 18:30:23 +020085 strm = stream_new(cs->conn->owner, &cs->obj_type);
Willy Tarreau5790eb02017-08-28 17:18:36 +020086 if (strm == NULL)
87 return -1;
88
89 task_wakeup(strm->task, TASK_WOKEN_INIT);
90 return 0;
91}
92
Willy Tarreaub882dd82018-11-06 15:50:21 +010093/* Callback used to wake up a stream when an input buffer is available. The
94 * stream <s>'s stream interfaces are checked for a failed buffer allocation
Willy Tarreaud0f5bbc2018-11-14 11:10:26 +010095 * as indicated by the presence of the SI_FL_RXBLK_ROOM flag and the lack of a
Willy Tarreaub882dd82018-11-06 15:50:21 +010096 * buffer, and and input buffer is assigned there (at most one). The function
97 * returns 1 and wakes the stream up if a buffer was taken, otherwise zero.
98 * It's designed to be called from __offer_buffer().
99 */
100int stream_buf_available(void *arg)
101{
102 struct stream *s = arg;
103
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100104 if (!s->req.buf.size && !s->req.pipe && (s->si[0].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100105 b_alloc_margin(&s->req.buf, global.tune.reserved_bufs))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100106 si_rx_buff_rdy(&s->si[0]);
107 else if (!s->res.buf.size && !s->res.pipe && (s->si[1].flags & SI_FL_RXBLK_BUFF) &&
Willy Tarreaub882dd82018-11-06 15:50:21 +0100108 b_alloc_margin(&s->res.buf, 0))
Willy Tarreau8be7cd72018-11-14 15:12:08 +0100109 si_rx_buff_rdy(&s->si[1]);
Willy Tarreaub882dd82018-11-06 15:50:21 +0100110 else
111 return 0;
112
113 task_wakeup(s->task, TASK_WOKEN_RES);
114 return 1;
115
116}
117
Willy Tarreau9903f0e2015-04-04 18:50:31 +0200118/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200119 * handshake, in order to complete initialization of a valid stream. It must be
Joseph Herlant4cc8d0d2018-11-15 09:14:14 -0800120 * called with a completely initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200121 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +0200122 * end point is assigned to <origin>, which must be valid. The stream's task
123 * is configured with a nice value inherited from the listener's nice if any.
124 * The task's context is set to the new stream, and its function is set to
125 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +0200126 */
Willy Tarreau87787ac2017-08-28 16:22:54 +0200127struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +0200128{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200129 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200130 struct task *t;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200131 struct conn_stream *cs = objt_cs(origin);
Willy Tarreau73b65ac2015-04-08 18:26:29 +0200132 struct appctx *appctx = objt_appctx(origin);
Christopher Fauletb3484d62018-11-29 15:19:05 +0100133 const struct cs_info *csinfo;
Willy Tarreau2542b532012-08-31 16:01:23 +0200134
Willy Tarreaubafbe012017-11-24 17:34:44 +0100135 if (unlikely((s = pool_alloc(pool_head_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200136 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200137
138 /* minimum stream initialization required for an embryonic stream is
139 * fairly low. We need very little to execute L4 ACLs, then we need a
140 * task to make the client-side connection live on its own.
141 * - flags
142 * - stick-entry tracking
143 */
144 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200145 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200146 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200147 tv_zero(&s->logs.tv_request);
148 s->logs.t_queue = -1;
149 s->logs.t_connect = -1;
150 s->logs.t_data = -1;
151 s->logs.t_close = 0;
152 s->logs.bytes_in = s->logs.bytes_out = 0;
Patrick Hemmerffe5e8c2018-05-11 12:52:31 -0400153 s->logs.prx_queue_pos = 0; /* we get the number of pending conns before us */
154 s->logs.srv_queue_pos = 0; /* we will get this number soon */
Baptiste Assmann333939c2019-01-21 08:34:50 +0100155 s->obj_type = OBJ_TYPE_STREAM;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200156
Christopher Fauletb3484d62018-11-29 15:19:05 +0100157 csinfo = si_get_cs_info(cs);
158 if (csinfo) {
159 s->logs.accept_date = csinfo->create_date;
160 s->logs.tv_accept = csinfo->tv_create;
161 s->logs.t_handshake = csinfo->t_handshake;
162 s->logs.t_idle = csinfo->t_idle;
163 }
164 else {
165 s->logs.accept_date = sess->accept_date;
166 s->logs.tv_accept = sess->tv_accept;
167 s->logs.t_handshake = sess->t_handshake;
168 s->logs.t_idle = -1;
169 }
170
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200171 /* default logging function */
172 s->do_log = strm_log;
173
174 /* default error reporting function, may be changed by analysers */
175 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200176
177 /* Initialise the current rule list pointer to NULL. We are sure that
178 * any rulelist match the NULL pointer.
179 */
180 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200181 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200182
Willy Tarreaua68f7622015-09-21 17:48:24 +0200183 /* Copy SC counters for the stream. We don't touch refcounts because
184 * any reference we have is inherited from the session. Since the stream
185 * doesn't exist without the session, the session's existence guarantees
186 * we don't lose the entry. During the store operation, the stream won't
187 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200188 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200189 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200190
191 s->sess = sess;
192 s->si[0].flags = SI_FL_NONE;
193 s->si[1].flags = SI_FL_ISBACK;
194
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100195 s->uniq_id = _HA_ATOMIC_XADD(&global.req_count, 1);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200196
Willy Tarreau87b09662015-04-03 00:22:06 +0200197 /* OK, we're keeping the stream, so let's properly initialize the stream */
Willy Tarreau2542b532012-08-31 16:01:23 +0200198 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100199
200 LIST_INIT(&s->buffer_wait.list);
201 s->buffer_wait.target = s;
Willy Tarreaub882dd82018-11-06 15:50:21 +0100202 s->buffer_wait.wakeup_cb = stream_buf_available;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200203
Willy Tarreau2e9c1d22019-04-24 08:28:31 +0200204 s->call_rate.curr_sec = s->call_rate.curr_ctr = s->call_rate.prev_ctr = 0;
William Lallemandcf62f7e2018-10-26 14:47:40 +0200205 s->pcli_next_pid = 0;
William Lallemandebf61802018-12-11 16:10:57 +0100206 s->pcli_flags = 0;
Willy Tarreau2542b532012-08-31 16:01:23 +0200207 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200208
Emeric Brunc60def82017-09-27 14:59:38 +0200209 if ((t = task_new(tid_bit)) == NULL)
Willy Tarreau87787ac2017-08-28 16:22:54 +0200210 goto out_fail_alloc;
211
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200212 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100213 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200214 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200215 t->context = s;
216 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200217 if (sess->listener)
218 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200219
Willy Tarreau87b09662015-04-03 00:22:06 +0200220 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200221 * This changes later when switching rules are executed or
222 * when the default backend is assigned.
223 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200224 s->be = sess->fe;
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200225 s->req.buf = BUF_NULL;
226 s->res.buf = BUF_NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200227 s->req_cap = NULL;
228 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200229
Willy Tarreauebcd4842015-06-19 11:59:02 +0200230 /* Initialise all the variables contexts even if not used.
231 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200232 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200233 vars_init(&s->vars_txn, SCOPE_TXN);
234 vars_init(&s->vars_reqres, SCOPE_REQ);
235
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200236 /* this part should be common with other protocols */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200237 if (si_reset(&s->si[0]) < 0)
238 goto out_fail_alloc;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200239 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100240 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200241
Christopher Faulet0e160ff2019-04-03 10:01:07 +0200242 if (cs && cs->conn->mux) {
243 if (cs->conn->mux->flags & MX_FL_CLEAN_ABRT)
244 s->si[0].flags |= SI_FL_CLEAN_ABRT;
245 if (cs->conn->mux->flags & MX_FL_HTX)
246 s->flags |= SF_HTX;
247 }
Christopher Faulet3494c632019-07-15 14:58:26 +0200248 /* Set SF_HTX flag for HTTP frontends. */
249 if (sess->fe->mode == PR_MODE_HTTP)
Christopher Faulet0e160ff2019-04-03 10:01:07 +0200250 s->flags |= SF_HTX;
Willy Tarreau984fca92017-12-20 16:31:43 +0100251
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200252 /* attach the incoming connection to the stream interface now. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200253 if (cs)
254 si_attach_cs(&s->si[0], cs);
Willy Tarreau470280e2015-04-05 01:33:13 +0200255 else if (appctx)
256 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200257
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200258 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200259 s->si[0].flags |= SI_FL_INDEP_STR;
260
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200261 /* pre-initialize the other side's stream interface to an INIT state. The
262 * callbacks will be initialized before attempting to connect.
263 */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200264 if (si_reset(&s->si[1]) < 0)
265 goto out_fail_alloc_si1;
Hongbo Longe39683c2017-03-10 18:41:51 +0100266 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200267
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200268 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200269 s->si[1].flags |= SI_FL_INDEP_STR;
270
Willy Tarreau87b09662015-04-03 00:22:06 +0200271 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100272 s->target = sess->listener ? sess->listener->default_target : NULL;
273
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200274 s->pend_pos = NULL;
Patrick Hemmer268a7072018-05-11 12:52:31 -0400275 s->priority_class = 0;
276 s->priority_offset = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200277
278 /* init store persistence */
279 s->store_count = 0;
280
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100281 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100282 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100283 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaue223e3b2017-11-18 15:39:10 +0100284
285 if (!sess->fe->fe_req_ana) {
286 channel_auto_connect(&s->req); /* don't wait to establish connection */
287 channel_auto_close(&s->req); /* let the producer forward close requests */
288 }
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200289
290 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100291 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100292 s->req.rex = TICK_ETERNITY;
293 s->req.wex = TICK_ETERNITY;
294 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200295
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100296 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100297 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100298 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200299
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200300 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100301 s->req.flags |= CF_NEVER_WAIT;
302 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200303 }
304
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200305 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100306 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100307 s->res.rex = TICK_ETERNITY;
308 s->res.wex = TICK_ETERNITY;
309 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200310
Willy Tarreaueee5b512015-04-03 23:46:31 +0200311 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100312 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100313
Frédéric Lécaillebed883a2019-04-23 17:26:33 +0200314 s->dns_ctx.dns_requester = NULL;
315 s->dns_ctx.hostname_dn = NULL;
316 s->dns_ctx.hostname_dn_len = 0;
317 s->dns_ctx.parent = NULL;
318
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100319 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200320 LIST_ADDQ(&streams, &s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100321 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200322
Christopher Faulet92d36382015-11-05 13:35:03 +0100323 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200324 goto out_fail_accept;
325
Olivier Houcharda254a372019-04-05 15:30:12 +0200326 s->si[1].l7_buffer = BUF_NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200327 /* finish initialization of the accepted file descriptor */
Olivier Houchard53216e72018-10-10 15:46:36 +0200328 if (appctx)
Willy Tarreau0cd3bd62018-11-06 18:46:37 +0100329 si_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200330
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200331 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200332 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200333
334 /* it is important not to call the wakeup function directly but to
335 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200336 * priorities to tasks. Using multi thread we must be sure that
337 * stream is fully initialized before calling task_wakeup. So
338 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200339 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200340 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200341
342 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200343 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100344 flt_stream_release(s, 0);
Olivier Houchard3f795f72019-04-17 22:51:06 +0200345 task_destroy(t);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200346 tasklet_free(s->si[1].wait_event.tasklet);
Willy Tarreaue5f229e2018-10-15 11:08:55 +0200347 LIST_DEL(&s->list);
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200348out_fail_alloc_si1:
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200349 tasklet_free(s->si[0].wait_event.tasklet);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200350 out_fail_alloc:
Willy Tarreaubafbe012017-11-24 17:34:44 +0100351 pool_free(pool_head_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200352 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200353}
354
Willy Tarreaubaaee002006-06-26 02:48:02 +0200355/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200356 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200357 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200358static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200359{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200360 struct session *sess = strm_sess(s);
361 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100362 struct bref *bref, *back;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200363 struct conn_stream *cli_cs = objt_cs(s->si[0].end);
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100364 int must_free_sess;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200365 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100366
Willy Tarreau0ad46fa2019-05-17 14:20:05 +0200367 /* detach the stream from its own task before even releasing it so
368 * that walking over a task list never exhibits a dying stream.
369 */
370 s->task->context = NULL;
371 __ha_barrier_store();
372
Willy Tarreaud0ad4a82018-07-25 11:13:53 +0200373 pendconn_free(s);
Willy Tarreau922a8062008-12-04 09:33:58 +0100374
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100375 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200376 if (s->flags & SF_CURR_SESS) {
377 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100378 _HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1);
Willy Tarreau1e62de62008-11-11 20:20:02 +0100379 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100380 if (may_dequeue_tasks(objt_server(s->target), s->be))
381 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100382 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100383
Willy Tarreau7c669d72008-06-20 15:04:11 +0200384 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200385 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200386 * it should normally be only the same as the one above,
387 * so this should not happen in fact.
388 */
389 sess_change_server(s, NULL);
390 }
391
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100392 if (s->req.pipe)
393 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100394
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100395 if (s->res.pipe)
396 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100397
Willy Tarreaubf883e02014-11-25 21:10:35 +0100398 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100399 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100400 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100401 LIST_DEL(&s->buffer_wait.list);
402 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100403 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100404 }
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200405 if (s->req.buf.size || s->res.buf.size) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100406 b_drop(&s->req.buf);
407 b_drop(&s->res.buf);
Olivier Houchard673867c2018-05-25 16:58:52 +0200408 offer_buffers(NULL, tasks_run_queue);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100409 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200410
Olivier Houchard32211a12019-02-01 18:10:46 +0100411 pool_free(pool_head_uniqueid, s->unique_id);
Willy Tarreau09c4bab2019-02-10 18:49:37 +0100412 s->unique_id = NULL;
Olivier Houchard32211a12019-02-01 18:10:46 +0100413
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100414 hlua_ctx_destroy(s->hlua);
415 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200416 if (s->txn)
417 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100418
Willy Tarreau1e954912012-10-12 17:50:05 +0200419 /* ensure the client-side transport layer is destroyed */
Willy Tarreau32560732017-10-08 11:33:44 +0200420 if (cli_cs)
421 cs_close(cli_cs);
Willy Tarreau1e954912012-10-12 17:50:05 +0200422
Willy Tarreaua4cda672010-06-06 18:28:49 +0200423 for (i = 0; i < s->store_count; i++) {
424 if (!s->store[i].ts)
425 continue;
426 stksess_free(s->store[i].table, s->store[i].ts);
427 s->store[i].ts = NULL;
428 }
429
Willy Tarreaueee5b512015-04-03 23:46:31 +0200430 if (s->txn) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100431 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200432 s->txn = NULL;
433 }
434
Baptiste Assmann333939c2019-01-21 08:34:50 +0100435 if (s->dns_ctx.dns_requester) {
436 free(s->dns_ctx.hostname_dn); s->dns_ctx.hostname_dn = NULL;
437 s->dns_ctx.hostname_dn_len = 0;
438 dns_unlink_resolution(s->dns_ctx.dns_requester);
439
440 pool_free(dns_requester_pool, s->dns_ctx.dns_requester);
441 s->dns_ctx.dns_requester = NULL;
442 }
443
Christopher Fauletd7c91962015-04-30 11:48:27 +0200444 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100445 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200446
Willy Tarreau92fb9832007-10-16 17:34:28 +0200447 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100448 pool_free(fe->rsp_cap_pool, s->res_cap);
449 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200450 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100451
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200452 /* Cleanup all variable contexts. */
Willy Tarreaucda7f3f2018-10-28 13:44:36 +0100453 if (!LIST_ISEMPTY(&s->vars_txn.head))
454 vars_prune(&s->vars_txn, s->sess, s);
455 if (!LIST_ISEMPTY(&s->vars_reqres.head))
456 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200457
Willy Tarreau87b09662015-04-03 00:22:06 +0200458 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200459
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100460 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100461 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100462 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200463 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100464 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100465 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100466 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200467 if (s->list.n != &streams)
468 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100469 bref->ref = s->list.n;
470 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100471 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100472 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200473
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100474 /* applets do not release session yet */
475 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
476
Olivier Houchard4fdec7a2018-10-11 17:09:14 +0200477
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200478 si_release_endpoint(&s->si[1]);
479 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200480
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200481 tasklet_free(s->si[0].wait_event.tasklet);
482 tasklet_free(s->si[1].wait_event.tasklet);
Olivier Houchardd7bd3e32018-10-18 16:22:02 +0200483
Olivier Houcharda254a372019-04-05 15:30:12 +0200484 b_free(&s->si[1].l7_buffer);
Olivier Houchard25607af2018-11-23 14:50:47 +0100485 if (must_free_sess) {
486 sess->origin = NULL;
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100487 session_free(sess);
Olivier Houchard25607af2018-11-23 14:50:47 +0100488 }
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100489
Willy Tarreaubafbe012017-11-24 17:34:44 +0100490 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200491
492 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200493 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100494 pool_flush(pool_head_buffer);
495 pool_flush(pool_head_http_txn);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100496 pool_flush(pool_head_requri);
497 pool_flush(pool_head_capture);
498 pool_flush(pool_head_stream);
499 pool_flush(pool_head_session);
500 pool_flush(pool_head_connection);
501 pool_flush(pool_head_pendconn);
502 pool_flush(fe->req_cap_pool);
503 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200504 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200505}
506
Willy Tarreau656859d2014-11-25 19:46:36 +0100507
Willy Tarreau87b09662015-04-03 00:22:06 +0200508/* Allocates a work buffer for stream <s>. It is meant to be called inside
509 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200510 * to work fine, which is the response buffer so that an error message may be
511 * built and returned. Response buffers may be allocated from the reserve, this
512 * is critical to ensure that a response may always flow and will never block a
513 * server from releasing a connection. Returns 0 in case of failure, non-zero
514 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100515 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100516static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100517{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100518 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100519 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100520 LIST_DEL(&s->buffer_wait.list);
521 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100522 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100523 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100524
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200525 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100526 return 1;
527
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100528 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100529 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100530 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100531 return 0;
532}
533
534/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100535 * update() functions. It will try to wake up as many tasks/applets as the
536 * number of buffers that it releases. In practice, most often streams are
537 * blocked on a single buffer, so it makes sense to try to wake two up when two
538 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100539 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200540void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100541{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100542 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100543
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200544 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100545 offer = 1;
546 b_free(&s->req.buf);
547 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200548 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100549 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100550 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100551 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100552
Willy Tarreaubf883e02014-11-25 21:10:35 +0100553 /* if we're certain to have at least 1 buffer available, and there is
554 * someone waiting, we can wake up a waiter and offer them.
555 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100556 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200557 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100558}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200559
Willy Tarreau87b09662015-04-03 00:22:06 +0200560void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100561{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200562 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100563 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200564 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200565 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100566 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100567
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100568 bytes = s->req.total - s->logs.bytes_in;
569 s->logs.bytes_in = s->req.total;
570 if (bytes) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100571 _HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
572 _HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100573
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100574 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100575 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200576
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200577 if (sess->listener && sess->listener->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100578 _HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200579
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100580 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200581 struct stkctr *stkctr = &s->stkctr[i];
582
Emeric Brun819fc6f2017-06-13 19:37:32 +0200583 ts = stkctr_entry(stkctr);
584 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200585 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200586 ts = stkctr_entry(stkctr);
587 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200588 continue;
589 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200590
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100591 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200592 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200593 if (ptr1)
594 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200595
Emeric Brun819fc6f2017-06-13 19:37:32 +0200596 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200597 if (ptr2)
598 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200599 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100600 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200601
602 /* If data was modified, we need to touch to re-schedule sync */
603 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200604 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100605 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100606 }
607
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100608 bytes = s->res.total - s->logs.bytes_out;
609 s->logs.bytes_out = s->res.total;
610 if (bytes) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100611 _HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
612 _HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100613
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100614 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100615 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200616
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200617 if (sess->listener && sess->listener->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100618 _HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200619
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100620 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200621 struct stkctr *stkctr = &s->stkctr[i];
622
Emeric Brun819fc6f2017-06-13 19:37:32 +0200623 ts = stkctr_entry(stkctr);
624 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200625 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200626 ts = stkctr_entry(stkctr);
627 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200628 continue;
629 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200630
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100631 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200632 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200633 if (ptr1)
634 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200635
Emeric Brun819fc6f2017-06-13 19:37:32 +0200636 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200637 if (ptr2)
638 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200639 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100640 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200641
642 /* If data was modified, we need to touch to re-schedule sync */
643 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200644 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100645 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100646 }
647}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200648
Willy Tarreaud66ed882019-06-05 18:02:04 +0200649/* This function is called with (si->state == SI_ST_CON) meaning that a
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100650 * connection was attempted and that the file descriptor is already allocated.
Willy Tarreaud66ed882019-06-05 18:02:04 +0200651 * We must check for timeout, error and abort. Possible output states are
652 * SI_ST_CER (error), SI_ST_DIS (abort), and SI_ST_CON (no change). This only
653 * works with connection-based streams. We know that there were no I/O event
654 * when reaching this function. Timeouts and errors are *not* cleared.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100655 */
Willy Tarreaud66ed882019-06-05 18:02:04 +0200656static void sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100657{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100658 struct stream_interface *si = &s->si[1];
659 struct channel *req = &s->req;
660 struct channel *rep = &s->res;
Olivier Houchard14547b22018-11-29 18:01:46 +0100661 struct conn_stream *srv_cs = objt_cs(si->end);
Willy Tarreaubf66bd12019-01-23 15:15:09 +0100662 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100663
Willy Tarreaud66ed882019-06-05 18:02:04 +0200664 /* the client might want to abort */
665 if ((rep->flags & CF_SHUTW) ||
666 ((req->flags & CF_SHUTW_NOW) &&
667 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE)))) {
668 si->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200669 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100670 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100671 if (s->srv_error)
672 s->srv_error(s, si);
Willy Tarreaud66ed882019-06-05 18:02:04 +0200673 /* Note: state = SI_ST_DIS now */
674 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100675 }
676
Willy Tarreaud66ed882019-06-05 18:02:04 +0200677 /* retryable error ? */
678 if (si->flags & (SI_FL_EXP|SI_FL_ERR)) {
679 if (!(s->flags & SF_SRV_REUSED) && conn) {
680 conn_stop_tracking(conn);
681 conn_full_close(conn);
682 }
Christopher Faulet7a3367c2019-05-09 11:46:52 +0200683
Willy Tarreaud66ed882019-06-05 18:02:04 +0200684 if (!si->err_type) {
685 if (si->flags & SI_FL_ERR)
686 si->err_type = SI_ET_CONN_ERR;
687 else
688 si->err_type = SI_ET_CONN_TO;
689 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100690
Willy Tarreaud66ed882019-06-05 18:02:04 +0200691 si->state = SI_ST_CER;
692 return;
693 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100694}
695
696/* This function is called with (si->state == SI_ST_CER) meaning that a
697 * previous connection attempt has failed and that the file descriptor
698 * has already been released. Possible causes include asynchronous error
699 * notification and time out. Possible output states are SI_ST_CLO when
700 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
701 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
702 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
Willy Tarreaud66ed882019-06-05 18:02:04 +0200703 * marked as in error state. Timeouts and errors are cleared before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100704 */
Willy Tarreaud66ed882019-06-05 18:02:04 +0200705static void sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100706{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100707 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200708 struct conn_stream *cs = objt_cs(si->end);
709 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100710
Willy Tarreaud66ed882019-06-05 18:02:04 +0200711 si->exp = TICK_ETERNITY;
712 si->flags &= ~SI_FL_EXP;
713
Willy Tarreau87b09662015-04-03 00:22:06 +0200714 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100715 if (objt_server(s->target)) {
716 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100717
Willy Tarreaue7dff022015-04-03 01:14:29 +0200718 if (s->flags & SF_CURR_SESS) {
719 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100720 _HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100721 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200722
723 if ((si->flags & SI_FL_ERR) &&
724 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
725 /* We tried to connect to a server which is configured
726 * with "verify required" and which doesn't have the
727 * "verifyhost" directive. The server presented a wrong
728 * certificate (a certificate for an unexpected name),
729 * which implies that we have used SNI in the handshake,
730 * and that the server doesn't have the associated cert
731 * and presented a default one.
732 *
733 * This is a serious enough issue not to retry. It's
734 * especially important because this wrong name might
735 * either be the result of a configuration error, and
736 * retrying will only hammer the server, or is caused
737 * by the use of a wrong SNI value, most likely
738 * provided by the client and we don't want to let the
739 * client provoke retries.
740 */
741 si->conn_retries = 0;
742 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100743 }
744
745 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200746 si->conn_retries--;
Olivier Houcharda254a372019-04-05 15:30:12 +0200747 if (si->conn_retries < 0 || !(s->be->retry_type & PR_RE_CONN_FAILED)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100748 if (!si->err_type) {
749 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100750 }
751
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100752 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100753 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
754 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100755 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100756 if (may_dequeue_tasks(objt_server(s->target), s->be))
757 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100758
759 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200760 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100761 s->req.flags |= CF_WRITE_ERROR;
762 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100763
764 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100765 if (s->srv_error)
766 s->srv_error(s, si);
Willy Tarreaud66ed882019-06-05 18:02:04 +0200767 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100768 }
769
Olivier Houchard4bd58672019-07-12 16:16:59 +0200770 stream_choose_redispatch(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100771
772 if (si->flags & SI_FL_ERR) {
773 /* The error was an asynchronous connection error, and we will
774 * likely have to retry connecting to the same server, most
775 * likely leading to the same result. To avoid this, we wait
Willy Tarreauf7a259d2019-01-23 16:29:53 +0100776 * MIN(one second, connect timeout) before retrying. We don't
777 * do it when the failure happened on a reused connection
778 * though.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100779 */
780
Willy Tarreaub0290662014-06-13 17:04:44 +0200781 int delay = 1000;
782
783 if (s->be->timeout.connect && s->be->timeout.connect < delay)
784 delay = s->be->timeout.connect;
785
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100786 if (!si->err_type)
787 si->err_type = SI_ET_CONN_ERR;
788
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200789 /* only wait when we're retrying on the same server */
Willy Tarreauf7a259d2019-01-23 16:29:53 +0100790 if ((si->state == SI_ST_ASS ||
791 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
792 (s->be->srv_act <= 1)) && !(s->flags & SF_SRV_REUSED)) {
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200793 si->state = SI_ST_TAR;
794 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
795 }
Olivier Houchard39cc0202019-04-09 19:12:51 +0200796 si->flags &= ~SI_FL_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100797 }
Willy Tarreaud66ed882019-06-05 18:02:04 +0200798}
799
800/* This function is called with (si->state == SI_ST_RDY) meaning that a
801 * connection was attempted, that the file descriptor is already allocated,
802 * and that it has succeeded. We must still check for errors and aborts.
803 * Possible output states are SI_ST_EST (established), SI_ST_CER (error),
804 * and SI_ST_DIS (abort). This only works with connection-based streams.
805 * Timeouts and errors are *not* cleared.
806 */
807static void sess_update_st_rdy_tcp(struct stream *s)
808{
809 struct stream_interface *si = &s->si[1];
810 struct channel *req = &s->req;
811 struct channel *rep = &s->res;
812 struct conn_stream *srv_cs = objt_cs(si->end);
813 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
814
815 /* We know the connection at least succeeded, though it could have
816 * since met an error for any other reason. At least it didn't time out
817 * eventhough the timeout might have been reported right after success.
818 * We need to take care of various situations here :
819 * - everything might be OK. We have to switch to established.
820 * - an I/O error might have been reported after a successful transfer,
821 * which is not retryable and needs to be logged correctly, and needs
822 * established as well
823 * - SI_ST_CON implies !CF_WROTE_DATA but not conversely as we could
824 * have validated a connection with incoming data (e.g. TCP with a
825 * banner protocol), or just a successful connect() probe.
826 * - the client might have requested a connection abort, this needs to
827 * be checked before we decide to retry anything.
828 */
829
830 /* it's still possible to handle client aborts or connection retries
831 * before any data were sent.
832 */
833 if (!(req->flags & CF_WROTE_DATA)) {
834 /* client abort ? */
835 if ((rep->flags & CF_SHUTW) ||
836 ((req->flags & CF_SHUTW_NOW) &&
837 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE)))) {
838 /* give up */
839 si->flags |= SI_FL_NOLINGER;
840 si_shutw(si);
841 si->err_type |= SI_ET_CONN_ABRT;
842 if (s->srv_error)
843 s->srv_error(s, si);
844 return;
845 }
846
847 /* retryable error ? */
848 if (si->flags & SI_FL_ERR) {
849 if (!(s->flags & SF_SRV_REUSED) && conn) {
850 conn_stop_tracking(conn);
851 conn_full_close(conn);
852 }
853
854 if (!si->err_type)
855 si->err_type = SI_ET_CONN_ERR;
856 si->state = SI_ST_CER;
857 return;
858 }
859 }
860
861 /* data were sent and/or we had no error, sess_establish() will
862 * now take over.
863 */
864 si->err_type = SI_ET_NONE;
865 si->state = SI_ST_EST;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100866}
867
868/*
869 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200870 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau4f283fa2019-06-05 14:34:03 +0200871 * 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 +0200872 * Note that it will switch the interface to SI_ST_DIS if we already have
873 * the CF_SHUTR flag, it means we were able to forward the request, and
874 * receive the response, before process_stream() had the opportunity to
875 * make the switch from SI_ST_CON to SI_ST_EST. When that happens, we want
876 * to go through sess_establish() anyway, to make sure the analysers run.
Willy Tarreaud66ed882019-06-05 18:02:04 +0200877 * Timeouts are cleared. Error are reported on the channel so that analysers
878 * can handle them.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100879 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200880static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100881{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100882 struct stream_interface *si = &s->si[1];
Willy Tarreaud66ed882019-06-05 18:02:04 +0200883 struct conn_stream *srv_cs = objt_cs(si->end);
884 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100885 struct channel *req = &s->req;
886 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100887
Willy Tarreaud66ed882019-06-05 18:02:04 +0200888 /* First, centralize the timers information, and clear any irrelevant
889 * timeout.
890 */
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100891 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud66ed882019-06-05 18:02:04 +0200892 si->exp = TICK_ETERNITY;
893 si->flags &= ~SI_FL_EXP;
894
895 /* errors faced after sending data need to be reported */
896 if (si->flags & SI_FL_ERR && req->flags & CF_WROTE_DATA) {
897 /* Don't add CF_WRITE_ERROR if we're here because
898 * early data were rejected by the server, or
899 * http_wait_for_response() will never be called
900 * to send a 425.
901 */
902 if (conn && conn->err_code != CO_ER_SSL_EARLY_FAILED)
903 req->flags |= CF_WRITE_ERROR;
904 rep->flags |= CF_READ_ERROR;
905 si->err_type = SI_ET_DATA_ERR;
906 }
907
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100908 if (objt_server(s->target))
909 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100910
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100911 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100912 /* if the user wants to log as soon as possible, without counting
913 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200914 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau66425e32018-07-25 06:55:12 +0200915 /* note: no pend_pos here, session is established */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100916 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100917 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100918 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100919 }
920 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100921 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100922 }
923
Willy Tarreau0007d0a2018-12-11 18:01:38 +0100924 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100925
Willy Tarreau0007d0a2018-12-11 18:01:38 +0100926 /* Be sure to filter response headers if the backend is an HTTP proxy
927 * and if there are filters attached to the stream. */
928 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
929 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +0100930
Willy Tarreau8bb2ffb2018-11-14 17:54:13 +0100931 si_rx_endp_more(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200932 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200933 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200934 /* real connections have timeouts */
935 req->wto = s->be->timeout.server;
936 rep->rto = s->be->timeout.server;
Olivier Houchard47e9a1a2018-11-07 17:55:19 +0100937 /* The connection is now established, try to read data from the
938 * underlying layer, and subscribe to recv events. We use a
939 * delayed recv here to give a chance to the data to flow back
940 * by the time we process other tasks.
941 */
942 si_chk_rcv(si);
Willy Tarreaud04e8582010-05-31 12:31:35 +0200943 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100944 req->wex = TICK_ETERNITY;
Olivier Houchardaacc4052019-05-21 17:43:50 +0200945 /* If we managed to get the whole response, switch to SI_ST_DIS now. */
946 if (rep->flags & CF_SHUTR)
947 si->state = SI_ST_DIS;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100948}
949
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700950/* Check if the connection request is in such a state that it can be aborted. */
951static int check_req_may_abort(struct channel *req, struct stream *s)
952{
953 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100954 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Christopher Faulet769d0e92019-03-22 14:23:18 +0100955 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700956}
957
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100958/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
959 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100960 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
961 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
962 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100963 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200964static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100965{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100966 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100967 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100968 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100969
Christopher Faulet45073512018-07-20 10:16:29 +0200970 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 +0100971 now_ms, __FUNCTION__,
972 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400973 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100974 req->rex, s->res.wex,
975 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200976 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 +0100977
978 if (si->state == SI_ST_ASS) {
979 /* Server assigned to connection request, we have to try to connect now */
980 int conn_err;
981
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700982 /* Before we try to initiate the connection, see if the
983 * request may be aborted instead.
984 */
985 if (check_req_may_abort(req, s)) {
986 si->err_type |= SI_ET_CONN_ABRT;
987 goto abort_connection;
988 }
989
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100990 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100991 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100992
Willy Tarreaue7dff022015-04-03 01:14:29 +0200993 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100994 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100995 if (srv)
996 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500997 if (srv)
998 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100999 return;
1000 }
1001
1002 /* We have received a synchronous error. We might have to
1003 * abort, retry immediately or redispatch.
1004 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001005 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001006 if (!si->err_type) {
1007 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001008 }
1009
Willy Tarreau827aee92011-03-10 16:55:02 +01001010 if (srv)
1011 srv_inc_sess_ctr(srv);
1012 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -05001013 srv_set_sess_last(srv);
1014 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001015 _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
1016 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001017
Willy Tarreau87b09662015-04-03 00:22:06 +02001018 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +01001019 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001020 if (may_dequeue_tasks(srv, s->be))
1021 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001022
1023 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001024 si_shutr(si);
1025 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001026 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001027
1028 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1029
Willy Tarreau66425e32018-07-25 06:55:12 +02001030 /* we may need to know the position in the queue for logging */
1031 pendconn_cond_unlink(s->pend_pos);
1032
Willy Tarreau87b09662015-04-03 00:22:06 +02001033 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001034 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001035 if (s->srv_error)
1036 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001037 return;
1038 }
1039
1040 /* We are facing a retryable error, but we don't want to run a
1041 * turn-around now, as the problem is likely a source port
1042 * allocation problem, so we want to retry now.
1043 */
1044 si->state = SI_ST_CER;
1045 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001046 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001047 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
1048 return;
1049 }
1050 else if (si->state == SI_ST_QUE) {
1051 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +01001052 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001053 /* The connection is not in the queue anymore. Either
1054 * we have a server connection slot available and we
1055 * go directly to the assigned state, or we need to
1056 * load-balance first and go to the INI state.
1057 */
1058 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001059 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001060 si->state = SI_ST_REQ;
1061 else {
1062 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1063 si->state = SI_ST_ASS;
1064 }
1065 return;
1066 }
1067
1068 /* Connection request still in queue... */
1069 if (si->flags & SI_FL_EXP) {
1070 /* ... and timeout expired */
1071 si->exp = TICK_ETERNITY;
Willy Tarreaud66ed882019-06-05 18:02:04 +02001072 si->flags &= ~SI_FL_EXP;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001073 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001074
1075 /* we may need to know the position in the queue for logging */
1076 pendconn_cond_unlink(s->pend_pos);
1077
Willy Tarreau827aee92011-03-10 16:55:02 +01001078 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001079 _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
1080 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +02001081 si_shutr(si);
1082 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001083 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001084 if (!si->err_type)
1085 si->err_type = SI_ET_QUEUE_TO;
1086 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001087 if (s->srv_error)
1088 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001089 return;
1090 }
1091
1092 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001093 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001094 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001095
1096 /* we may need to know the position in the queue for logging */
1097 pendconn_cond_unlink(s->pend_pos);
1098
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001099 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001100 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001101 }
1102
1103 /* Nothing changed */
1104 return;
1105 }
1106 else if (si->state == SI_ST_TAR) {
1107 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001108 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001109 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001110 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001111 }
1112
1113 if (!(si->flags & SI_FL_EXP))
1114 return; /* still in turn-around */
1115
Olivier Houchard86dcad62019-04-09 19:17:41 +02001116 si->flags &= ~SI_FL_EXP;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001117 si->exp = TICK_ETERNITY;
1118
Willy Tarreau87b09662015-04-03 00:22:06 +02001119 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001120 * marked "assigned".
1121 * FIXME: Should we force a redispatch attempt when the server is down ?
1122 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001123 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001124 si->state = SI_ST_ASS;
1125 else
1126 si->state = SI_ST_REQ;
1127 return;
1128 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001129 return;
1130
1131abort_connection:
1132 /* give up */
1133 si->exp = TICK_ETERNITY;
Willy Tarreaud66ed882019-06-05 18:02:04 +02001134 si->flags &= ~SI_FL_EXP;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001135 si_shutr(si);
1136 si_shutw(si);
1137 si->state = SI_ST_CLO;
1138 if (s->srv_error)
1139 s->srv_error(s, si);
1140 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001141}
1142
Willy Tarreau87b09662015-04-03 00:22:06 +02001143/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001144 * also counts a failed request if the server state has not reached the request
1145 * stage.
1146 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001147static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001148{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001149 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02001150 if (s->si[1].state == SI_ST_INI) {
1151 /* anything before REQ in fact */
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001152 _HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001153 if (strm_li(s) && strm_li(s)->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001154 _HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001155
Willy Tarreaue7dff022015-04-03 01:14:29 +02001156 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001157 }
1158 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001159 s->flags |= SF_FINST_Q;
Willy Tarreau4f283fa2019-06-05 14:34:03 +02001160 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 +02001161 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001162 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001163 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001164 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001165 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001166 }
1167}
1168
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001169/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001170 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1171 * a real connection to a server, indicating that a server has been assigned,
1172 * or SI_ST_EST for a successful connection to an applet. It may also return
1173 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001174 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001175static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001176{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001177 struct stream_interface *si = &s->si[1];
1178
Christopher Faulet45073512018-07-20 10:16:29 +02001179 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 +01001180 now_ms, __FUNCTION__,
1181 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001182 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001183 s->req.rex, s->res.wex,
1184 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001185 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 +01001186
1187 if (si->state != SI_ST_REQ)
1188 return;
1189
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001190 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1191 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001192 struct appctx *appctx = objt_appctx(si->end);
1193
1194 if (!appctx || appctx->applet != __objt_applet(s->target))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001195 appctx = si_register_handler(si, objt_applet(s->target));
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001196
1197 if (!appctx) {
1198 /* No more memory, let's immediately abort. Force the
1199 * error code to ignore the ERR_LOCAL which is not a
1200 * real error.
1201 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001202 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001203
1204 si_shutr(si);
1205 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001206 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001207 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001208 si->state = SI_ST_CLO;
1209 if (s->srv_error)
1210 s->srv_error(s, si);
1211 return;
1212 }
1213
Willy Tarreauee8269e2017-11-23 17:34:29 +01001214 if (tv_iszero(&s->logs.tv_request))
1215 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001216 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001217 si->state = SI_ST_EST;
1218 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001219 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001220 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001221 return;
1222 }
1223
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001224 /* Try to assign a server */
1225 if (srv_redispatch_connect(s) != 0) {
1226 /* We did not get a server. Either we queued the
1227 * connection request, or we encountered an error.
1228 */
1229 if (si->state == SI_ST_QUE)
1230 return;
1231
1232 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001233 si_shutr(si);
1234 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001235 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001236 if (!si->err_type)
1237 si->err_type = SI_ET_CONN_OTHER;
1238 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001239 if (s->srv_error)
1240 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001241 return;
1242 }
1243
1244 /* The server is assigned */
1245 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1246 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001247 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001248}
1249
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001250/* This function parses the use-service action ruleset. It executes
1251 * the associated ACL and set an applet as a stream or txn final node.
1252 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1253 * consistent state. It returns ACT_RET_STOP in succes case because
1254 * use-service must be a terminal action. Returns ACT_RET_YIELD
1255 * if the initialisation function require more data.
1256 */
1257enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1258 struct session *sess, struct stream *s, int flags)
1259
1260{
1261 struct appctx *appctx;
1262
1263 /* Initialises the applet if it is required. */
1264 if (flags & ACT_FLAG_FIRST) {
1265 /* Register applet. this function schedules the applet. */
1266 s->target = &rule->applet.obj_type;
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001267 if (unlikely(!si_register_handler(&s->si[1], objt_applet(s->target))))
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001268 return ACT_RET_ERR;
1269
1270 /* Initialise the context. */
1271 appctx = si_appctx(&s->si[1]);
1272 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1273 appctx->rule = rule;
1274 }
1275 else
1276 appctx = si_appctx(&s->si[1]);
1277
1278 /* Stops the applet sheduling, in case of the init function miss
1279 * some data.
1280 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001281 si_stop_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001282
1283 /* Call initialisation. */
1284 if (rule->applet.init)
1285 switch (rule->applet.init(appctx, px, s)) {
1286 case 0: return ACT_RET_ERR;
1287 case 1: break;
1288 default: return ACT_RET_YIELD;
1289 }
1290
Christopher Faulet2571bc62019-03-01 11:44:26 +01001291 if (rule->from != ACT_F_HTTP_REQ) {
1292 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
1293 _HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
1294
1295 /* The flag SF_ASSIGNED prevent from server assignment. */
1296 s->flags |= SF_ASSIGNED;
1297 }
1298
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001299 /* Now we can schedule the applet. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001300 si_cant_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001301 appctx_wakeup(appctx);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001302 return ACT_RET_STOP;
1303}
1304
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001305/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001306 * if appropriate. The default_backend rule is also considered, then the
1307 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001308 * It returns 1 if the processing can continue on next analysers, or zero if it
1309 * either needs more data or wants to immediately abort the request.
1310 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001311static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001312{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001313 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001314 struct session *sess = s->sess;
1315 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001316
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001317 req->analysers &= ~an_bit;
1318 req->analyse_exp = TICK_ETERNITY;
1319
Christopher Faulet45073512018-07-20 10:16:29 +02001320 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 +02001321 now_ms, __FUNCTION__,
1322 s,
1323 req,
1324 req->rex, req->wex,
1325 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001326 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001327 req->analysers);
1328
1329 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001330 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001331 struct switching_rule *rule;
1332
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001333 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001334 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001335
Willy Tarreauf51658d2014-04-23 01:21:56 +02001336 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001337 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001338 ret = acl_pass(ret);
1339 if (rule->cond->pol == ACL_COND_UNLESS)
1340 ret = !ret;
1341 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001342
1343 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001344 /* If the backend name is dynamic, try to resolve the name.
1345 * If we can't resolve the name, or if any error occurs, break
1346 * the loop and fallback to the default backend.
1347 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001348 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001349
1350 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001351 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001352
1353 tmp = alloc_trash_chunk();
1354 if (!tmp)
1355 goto sw_failed;
1356
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001357 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1358 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001359
1360 free_trash_chunk(tmp);
1361 tmp = NULL;
1362
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001363 if (!backend)
1364 break;
1365 }
1366 else
1367 backend = rule->be.backend;
1368
Willy Tarreau87b09662015-04-03 00:22:06 +02001369 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001370 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001371 break;
1372 }
1373 }
1374
1375 /* To ensure correct connection accounting on the backend, we
1376 * have to assign one if it was not set (eg: a listen). This
1377 * measure also takes care of correctly setting the default
1378 * backend if any.
1379 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001380 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001381 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001382 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001383 }
1384
Willy Tarreaufb356202010-08-03 14:02:05 +02001385 /* 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 +02001386 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001387 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1388 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001389 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001390 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001391
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001392 /* 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 +02001393 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001394 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001395 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001396 int ret = 1;
1397
1398 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001399 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 +01001400 ret = acl_pass(ret);
1401 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1402 ret = !ret;
1403 }
1404
1405 if (ret) {
1406 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001407 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001408 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001409 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001410 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001411 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001412 break;
1413 }
1414 }
1415
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001416 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001417
1418 sw_failed:
1419 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001420 channel_abort(&s->req);
1421 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001422
Willy Tarreaue7dff022015-04-03 01:14:29 +02001423 if (!(s->flags & SF_ERR_MASK))
1424 s->flags |= SF_ERR_RESOURCE;
1425 if (!(s->flags & SF_FINST_MASK))
1426 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001427
Willy Tarreaueee5b512015-04-03 23:46:31 +02001428 if (s->txn)
1429 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001430 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001431 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001432 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001433}
1434
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001435/* This stream analyser works on a request. It applies all use-server rules on
1436 * it then returns 1. The data must already be present in the buffer otherwise
1437 * they won't match. It always returns 1.
1438 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001439static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001440{
1441 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001442 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001443 struct server_rule *rule;
1444
Christopher Faulet45073512018-07-20 10:16:29 +02001445 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 +02001446 now_ms, __FUNCTION__,
1447 s,
1448 req,
1449 req->rex, req->wex,
1450 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001451 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001452 req->analysers);
1453
Willy Tarreaue7dff022015-04-03 01:14:29 +02001454 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001455 list_for_each_entry(rule, &px->server_rules, list) {
1456 int ret;
1457
Willy Tarreau192252e2015-04-04 01:47:55 +02001458 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001459 ret = acl_pass(ret);
1460 if (rule->cond->pol == ACL_COND_UNLESS)
1461 ret = !ret;
1462
1463 if (ret) {
1464 struct server *srv = rule->srv.ptr;
1465
Emeric Brun52a91d32017-08-31 14:41:55 +02001466 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001467 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001468 (s->flags & SF_FORCE_PRST)) {
1469 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001470 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001471 break;
1472 }
1473 /* if the server is not UP, let's go on with next rules
1474 * just in case another one is suited.
1475 */
1476 }
1477 }
1478 }
1479
1480 req->analysers &= ~an_bit;
1481 req->analyse_exp = TICK_ETERNITY;
1482 return 1;
1483}
1484
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001485static inline void sticking_rule_find_target(struct stream *s,
1486 struct stktable *t, struct stksess *ts)
1487{
1488 struct proxy *px = s->be;
1489 struct eb32_node *node;
1490 struct dict_entry *de;
1491 void *ptr;
1492 struct server *srv;
1493
1494 /* Look for the server name previously stored in <t> stick-table */
1495 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
1496 ptr = __stktable_data_ptr(t, ts, STKTABLE_DT_SERVER_NAME);
1497 de = stktable_data_cast(ptr, server_name);
1498 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
1499
1500 if (de) {
1501 struct ebpt_node *name;
1502
1503 name = ebis_lookup(&px->conf.used_server_name, de->value.key);
1504 if (name) {
1505 srv = container_of(name, struct server, conf.name);
1506 goto found;
1507 }
1508 }
1509
1510 /* Look for the server ID */
1511 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
1512 ptr = __stktable_data_ptr(t, ts, STKTABLE_DT_SERVER_ID);
1513 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
1514 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
1515
1516 if (!node)
1517 return;
1518
1519 srv = container_of(node, struct server, conf.id);
1520 found:
1521 if ((srv->cur_state != SRV_ST_STOPPED) ||
1522 (px->options & PR_O_PERSIST) || (s->flags & SF_FORCE_PRST)) {
1523 s->flags |= SF_DIRECT | SF_ASSIGNED;
1524 s->target = &srv->obj_type;
1525 }
1526}
1527
Emeric Brun1d33b292010-01-04 15:47:17 +01001528/* This stream analyser works on a request. It applies all sticking rules on
1529 * it then returns 1. The data must already be present in the buffer otherwise
1530 * they won't match. It always returns 1.
1531 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001532static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001533{
1534 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001535 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001536 struct sticking_rule *rule;
1537
Christopher Faulet45073512018-07-20 10:16:29 +02001538 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001539 now_ms, __FUNCTION__,
1540 s,
1541 req,
1542 req->rex, req->wex,
1543 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001544 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001545 req->analysers);
1546
1547 list_for_each_entry(rule, &px->sticking_rules, list) {
1548 int ret = 1 ;
1549 int i;
1550
Willy Tarreau9667a802013-12-09 12:52:13 +01001551 /* Only the first stick store-request of each table is applied
1552 * and other ones are ignored. The purpose is to allow complex
1553 * configurations which look for multiple entries by decreasing
1554 * order of precision and to stop at the first which matches.
1555 * An example could be a store of the IP address from an HTTP
1556 * header first, then from the source if not found.
1557 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001558 for (i = 0; i < s->store_count; i++) {
1559 if (rule->table.t == s->store[i].table)
1560 break;
1561 }
1562
1563 if (i != s->store_count)
1564 continue;
1565
1566 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001567 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001568 ret = acl_pass(ret);
1569 if (rule->cond->pol == ACL_COND_UNLESS)
1570 ret = !ret;
1571 }
1572
1573 if (ret) {
1574 struct stktable_key *key;
1575
Willy Tarreau192252e2015-04-04 01:47:55 +02001576 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 +01001577 if (!key)
1578 continue;
1579
1580 if (rule->flags & STK_IS_MATCH) {
1581 struct stksess *ts;
1582
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001583 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001584 if (!(s->flags & SF_ASSIGNED))
1585 sticking_rule_find_target(s, rule->table.t, ts);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001586 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001587 }
1588 }
1589 if (rule->flags & STK_IS_STORE) {
1590 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1591 struct stksess *ts;
1592
1593 ts = stksess_new(rule->table.t, key);
1594 if (ts) {
1595 s->store[s->store_count].table = rule->table.t;
1596 s->store[s->store_count++].ts = ts;
1597 }
1598 }
1599 }
1600 }
1601 }
1602
1603 req->analysers &= ~an_bit;
1604 req->analyse_exp = TICK_ETERNITY;
1605 return 1;
1606}
1607
1608/* This stream analyser works on a response. It applies all store rules on it
1609 * then returns 1. The data must already be present in the buffer otherwise
1610 * they won't match. It always returns 1.
1611 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001612static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001613{
1614 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001615 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001616 struct sticking_rule *rule;
1617 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001618 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001619
Christopher Faulet45073512018-07-20 10:16:29 +02001620 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 +01001621 now_ms, __FUNCTION__,
1622 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001623 rep,
1624 rep->rex, rep->wex,
1625 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001626 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001627 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001628
1629 list_for_each_entry(rule, &px->storersp_rules, list) {
1630 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001631
Willy Tarreau9667a802013-12-09 12:52:13 +01001632 /* Only the first stick store-response of each table is applied
1633 * and other ones are ignored. The purpose is to allow complex
1634 * configurations which look for multiple entries by decreasing
1635 * order of precision and to stop at the first which matches.
1636 * An example could be a store of a set-cookie value, with a
1637 * fallback to a parameter found in a 302 redirect.
1638 *
1639 * The store-response rules are not allowed to override the
1640 * store-request rules for the same table, but they may coexist.
1641 * Thus we can have up to one store-request entry and one store-
1642 * response entry for the same table at any time.
1643 */
1644 for (i = nbreq; i < s->store_count; i++) {
1645 if (rule->table.t == s->store[i].table)
1646 break;
1647 }
1648
1649 /* skip existing entries for this table */
1650 if (i < s->store_count)
1651 continue;
1652
Emeric Brun1d33b292010-01-04 15:47:17 +01001653 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001654 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001655 ret = acl_pass(ret);
1656 if (rule->cond->pol == ACL_COND_UNLESS)
1657 ret = !ret;
1658 }
1659
1660 if (ret) {
1661 struct stktable_key *key;
1662
Willy Tarreau192252e2015-04-04 01:47:55 +02001663 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 +01001664 if (!key)
1665 continue;
1666
Willy Tarreau37e340c2013-12-06 23:05:21 +01001667 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001668 struct stksess *ts;
1669
1670 ts = stksess_new(rule->table.t, key);
1671 if (ts) {
1672 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001673 s->store[s->store_count++].ts = ts;
1674 }
1675 }
1676 }
1677 }
1678
1679 /* process store request and store response */
1680 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001681 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001682 void *ptr;
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001683 struct dict_entry *de;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001684
Willy Tarreauc93cd162014-05-13 15:54:22 +02001685 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001686 stksess_free(s->store[i].table, s->store[i].ts);
1687 s->store[i].ts = NULL;
1688 continue;
1689 }
1690
Emeric Brun819fc6f2017-06-13 19:37:32 +02001691 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1692 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001693 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001694 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001695 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001696 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001697
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001698 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001699 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
1700 stktable_data_cast(ptr, server_id) = __objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001701 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Frédéric Lécaille03cdf552019-05-20 10:08:27 +02001702
1703 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
1704 de = dict_insert(&server_name_dict, __objt_server(s->target)->id);
1705 if (de) {
1706 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_NAME);
1707 stktable_data_cast(ptr, server_name) = de;
1708 }
1709 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
1710
Emeric Brun819fc6f2017-06-13 19:37:32 +02001711 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001712 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001713 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001714
1715 rep->analysers &= ~an_bit;
1716 rep->analyse_exp = TICK_ETERNITY;
1717 return 1;
1718}
1719
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001720/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001721 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001722 */
1723#define UPDATE_ANALYSERS(real, list, back, flag) { \
1724 list = (((list) & ~(flag)) | ~(back)) & (real); \
1725 back = real; \
1726 if (!(list)) \
1727 break; \
1728 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1729 continue; \
1730}
1731
Christopher Fauleta9215b72016-05-11 17:06:28 +02001732/* These 2 following macros call an analayzer for the specified channel if the
1733 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001734 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001735 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001736 * AN_REQ/RES_HTTP_XFER_BODY) */
1737#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1738 { \
1739 if ((list) & (flag)) { \
1740 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001741 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001742 break; \
1743 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1744 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001745 if (!flt_post_analyze((strm), (chn), (flag))) \
1746 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001747 } \
1748 else { \
1749 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1750 break; \
1751 } \
1752 UPDATE_ANALYSERS((chn)->analysers, (list), \
1753 (back), (flag)); \
1754 } \
1755 }
1756
1757#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1758 { \
1759 if ((list) & (flag)) { \
1760 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1761 break; \
1762 UPDATE_ANALYSERS((chn)->analysers, (list), \
1763 (back), (flag)); \
1764 } \
1765 }
1766
Willy Tarreau87b09662015-04-03 00:22:06 +02001767/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001768 * then puts it back to the wait queue in a clean state, or cleans up its
1769 * resources if it must be deleted. Returns in <next> the date the task wants
1770 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1771 * nothing too many times, the request and response buffers flags are monitored
1772 * and each function is called only if at least another function has changed at
1773 * least one flag it is interested in.
1774 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001775struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001776{
Willy Tarreau827aee92011-03-10 16:55:02 +01001777 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001778 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001779 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001780 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001781 unsigned int rq_prod_last, rq_cons_last;
1782 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001783 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001784 struct channel *req, *res;
1785 struct stream_interface *si_f, *si_b;
Willy Tarreau3d07a162019-04-25 19:15:20 +02001786 unsigned int rate;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001787
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001788 activity[tid].stream++;
1789
Willy Tarreau8f128b42014-11-28 15:07:47 +01001790 req = &s->req;
1791 res = &s->res;
1792
1793 si_f = &s->si[0];
1794 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001795
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001796 /* First, attempt to receive pending data from I/O layers */
Willy Tarreauade64782018-11-17 19:51:07 +01001797 si_sync_recv(si_f);
1798 si_sync_recv(si_b);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001799
Willy Tarreau3d07a162019-04-25 19:15:20 +02001800 rate = update_freq_ctr(&s->call_rate, 1);
1801 if (rate >= 100000 && s->call_rate.prev_ctr) { // make sure to wait at least a full second
1802 stream_dump_and_crash(&s->obj_type, read_freq_ctr(&s->call_rate));
1803 }
Olivier Houchardc2aa7112018-09-11 18:27:21 +02001804
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001805 //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 +01001806 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001807
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001808 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001809 if (s->txn)
1810 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001811
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001812 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001813 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1814 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001815
1816 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001817 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1818 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001819
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001820 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001821 si_f->flags |= SI_FL_DONT_WAKE;
1822 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001823
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001824 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001825 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001826
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001827 /* 1a: Check for low level timeouts if needed. We just set a flag on
1828 * stream interfaces when their timeouts have expired.
1829 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001830 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001831 si_check_timeouts(si_f);
1832 si_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001833
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001834 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001835 * for future reads or writes. Note: this will also concern upper layers
1836 * but we do not touch any other flag. We must be careful and correctly
1837 * detect state changes when calling them.
1838 */
1839
Willy Tarreau8f128b42014-11-28 15:07:47 +01001840 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001841
Willy Tarreau8f128b42014-11-28 15:07:47 +01001842 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1843 si_b->flags |= SI_FL_NOLINGER;
1844 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001845 }
1846
Willy Tarreau8f128b42014-11-28 15:07:47 +01001847 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1848 if (si_f->flags & SI_FL_NOHALF)
1849 si_f->flags |= SI_FL_NOLINGER;
1850 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001851 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001852
Willy Tarreau8f128b42014-11-28 15:07:47 +01001853 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001854
Willy Tarreau8f128b42014-11-28 15:07:47 +01001855 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1856 si_f->flags |= SI_FL_NOLINGER;
1857 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001858 }
1859
Willy Tarreau8f128b42014-11-28 15:07:47 +01001860 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1861 if (si_b->flags & SI_FL_NOHALF)
1862 si_b->flags |= SI_FL_NOLINGER;
1863 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001864 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001865
Christopher Fauleta00d8172016-11-10 14:58:05 +01001866 if (HAS_FILTERS(s))
1867 flt_stream_check_timeouts(s);
1868
Willy Tarreau798f4322012-11-08 14:49:17 +01001869 /* Once in a while we're woken up because the task expires. But
1870 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001871 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001872 * timeout needs to be refreshed.
1873 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001874 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001875 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Willy Tarreauede3d882018-10-24 17:17:56 +02001876 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001877 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001878 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001879 si_f->flags &= ~SI_FL_DONT_WAKE;
1880 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001881 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001882 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001883 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001884
Willy Tarreau829bd472019-06-06 09:17:23 +02001885 resync_stream_interface:
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001886 /* below we may emit error messages so we have to ensure that we have
1887 * our buffers properly allocated.
1888 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001889 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001890 /* No buffer available, we've been subscribed to the list of
1891 * buffer waiters, let's wait for our turn.
1892 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001893 si_f->flags &= ~SI_FL_DONT_WAKE;
1894 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001895 goto update_exp_and_leave;
1896 }
1897
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001898 /* 1b: check for low-level errors reported at the stream interface.
1899 * First we check if it's a retryable error (in which case we don't
1900 * want to tell the buffer). Otherwise we report the error one level
1901 * upper by setting flags into the buffers. Note that the side towards
1902 * the client cannot have connect (hence retryable) errors. Also, the
1903 * connection setup code must be able to deal with any type of abort.
1904 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001905 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001906 if (unlikely(si_f->flags & SI_FL_ERR)) {
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02001907 if (si_state_in(si_f->state, SI_SB_EST|SI_SB_DIS)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001908 si_shutr(si_f);
1909 si_shutw(si_f);
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001910 si_report_error(si_f);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001911 if (!(req->analysers) && !(res->analysers)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001912 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1913 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001914 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001915 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001916 if (!(s->flags & SF_ERR_MASK))
1917 s->flags |= SF_ERR_CLICL;
1918 if (!(s->flags & SF_FINST_MASK))
1919 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001920 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001921 }
1922 }
1923
Willy Tarreau8f128b42014-11-28 15:07:47 +01001924 if (unlikely(si_b->flags & SI_FL_ERR)) {
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02001925 if (si_state_in(si_b->state, SI_SB_EST|SI_SB_DIS)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001926 si_shutr(si_b);
1927 si_shutw(si_b);
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001928 si_report_error(si_b);
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001929 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001930 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001931 _HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001932 if (!(req->analysers) && !(res->analysers)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001933 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1934 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001935 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001936 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001937 if (!(s->flags & SF_ERR_MASK))
1938 s->flags |= SF_ERR_SRVCL;
1939 if (!(s->flags & SF_FINST_MASK))
1940 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001941 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001942 }
1943 /* note: maybe we should process connection errors here ? */
1944 }
1945
Willy Tarreau4f283fa2019-06-05 14:34:03 +02001946 if (si_state_in(si_b->state, SI_SB_CON|SI_SB_RDY)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001947 /* we were trying to establish a connection on the server side,
1948 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1949 */
Willy Tarreaud66ed882019-06-05 18:02:04 +02001950 if (si_b->state == SI_ST_RDY)
1951 sess_update_st_rdy_tcp(s);
1952 else if (si_b->state == SI_ST_CON)
1953 sess_update_st_con_tcp(s);
1954
1955 if (si_b->state == SI_ST_CER)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001956 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001957 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001958 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001959
1960 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1961 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1962 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1963 */
1964 }
1965
Willy Tarreau8f128b42014-11-28 15:07:47 +01001966 rq_prod_last = si_f->state;
1967 rq_cons_last = si_b->state;
1968 rp_cons_last = si_f->state;
1969 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001970
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001971 /* Check for connection closure */
1972
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001973 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001974 "[%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 +01001975 now_ms, __FUNCTION__, __LINE__,
1976 t,
1977 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001978 req, res,
1979 req->rex, res->wex,
1980 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001981 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 +01001982 si_f->err_type, si_b->err_type,
1983 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001984
1985 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001986 if (unlikely(si_f->state == SI_ST_DIS))
1987 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001988
1989 /* When a server-side connection is released, we have to count it and
1990 * check for pending connections on this server.
1991 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001992 if (unlikely(si_b->state == SI_ST_DIS)) {
1993 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001994 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001995 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001996 if (s->flags & SF_CURR_SESS) {
1997 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001998 _HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001999 }
2000 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01002001 if (may_dequeue_tasks(srv, s->be))
2002 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002003 }
2004 }
2005
2006 /*
2007 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
2008 * at this point.
2009 */
2010
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002011 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002012 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002013 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
2014 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002015 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002016 si_f->state != rq_prod_last ||
2017 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002018 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002019 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002020
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002021 if (si_state_in(si_f->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO)) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002022 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002023 unsigned int ana_list;
2024 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002025
Willy Tarreau90deb182010-01-07 00:20:41 +01002026 /* it's up to the analysers to stop new connections,
2027 * disable reading or closing. Note: if an analyser
2028 * disables any of these bits, it is responsible for
2029 * enabling them again when it disables itself, so
2030 * that other analysers are called in similar conditions.
2031 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002032 channel_auto_read(req);
2033 channel_auto_connect(req);
2034 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01002035
2036 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002037 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01002038 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002039 * the list when not needed. Any analyser may return 0
2040 * to break out of the loop, either because of missing
2041 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002042 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002043 * analyser, and we may loop again if other analysers
2044 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002045 *
2046 * We build a list of analysers to run. We evaluate all
2047 * of these analysers in the order of the lower bit to
2048 * the higher bit. This ordering is very important.
2049 * An analyser will often add/remove other analysers,
2050 * including itself. Any changes to itself have no effect
2051 * on the loop. If it removes any other analysers, we
2052 * want those analysers not to be called anymore during
2053 * this loop. If it adds an analyser that is located
2054 * after itself, we want it to be scheduled for being
2055 * processed during the loop. If it adds an analyser
2056 * which is located before it, we want it to switch to
2057 * it immediately, even if it has already been called
2058 * once but removed since.
2059 *
2060 * In order to achieve this, we compare the analyser
2061 * list after the call with a copy of it before the
2062 * call. The work list is fed with analyser bits that
2063 * appeared during the call. Then we compare previous
2064 * work list with the new one, and check the bits that
2065 * appeared. If the lowest of these bits is lower than
2066 * the current bit, it means we have enabled a previous
2067 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01002068 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002069
Willy Tarreau8f128b42014-11-28 15:07:47 +01002070 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002071 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002072 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002073 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002074 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002075 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
2076 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
2077 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002078 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002079 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002080 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002081 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
2082 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002083 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002084 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002085 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
2086 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002087 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002088 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002089 ANALYZE (s, req, pcli_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002090 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
2091 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002092 break;
2093 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002094 }
Willy Tarreau84455332009-03-15 22:34:05 +01002095
Willy Tarreau8f128b42014-11-28 15:07:47 +01002096 rq_prod_last = si_f->state;
2097 rq_cons_last = si_b->state;
2098 req->flags &= ~CF_WAKE_ONCE;
2099 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002100
Willy Tarreau1ec9bb52019-06-06 14:45:26 +02002101 if ((req->flags ^ flags) & (CF_SHUTR|CF_SHUTW))
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002102 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002103 }
2104
Willy Tarreau576507f2010-01-07 00:09:04 +01002105 /* we'll monitor the request analysers while parsing the response,
2106 * because some response analysers may indirectly enable new request
2107 * analysers (eg: HTTP keep-alive).
2108 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002109 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01002110
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002111 resync_response:
2112 /* Analyse response */
2113
Willy Tarreau8f128b42014-11-28 15:07:47 +01002114 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
2115 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002116 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002117 si_f->state != rp_cons_last ||
2118 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002119 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002120 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002121
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002122 if (si_state_in(si_b->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO)) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002123 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002124 unsigned int ana_list;
2125 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002126
Willy Tarreau90deb182010-01-07 00:20:41 +01002127 /* it's up to the analysers to stop disable reading or
2128 * closing. Note: if an analyser disables any of these
2129 * bits, it is responsible for enabling them again when
2130 * it disables itself, so that other analysers are called
2131 * in similar conditions.
2132 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002133 channel_auto_read(res);
2134 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002135
2136 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002137 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002138 * to MSB. The analysers must remove themselves from
2139 * the list when not needed. Any analyser may return 0
2140 * to break out of the loop, either because of missing
2141 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002142 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002143 * analyser, and we may loop again if other analysers
2144 * are added in the middle.
2145 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002146
Willy Tarreau8f128b42014-11-28 15:07:47 +01002147 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002148 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002149 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002150 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
2151 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002152 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002153 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002154 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002155 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 +01002156 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002157 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002158 ANALYZE (s, res, pcli_wait_for_response, ana_list, ana_back, AN_RES_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002159 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
2160 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002161 break;
2162 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002163 }
2164
Willy Tarreau8f128b42014-11-28 15:07:47 +01002165 rp_cons_last = si_f->state;
2166 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02002167 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002168 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002169
Willy Tarreau1ec9bb52019-06-06 14:45:26 +02002170 if ((res->flags ^ flags) & (CF_SHUTR|CF_SHUTW))
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002171 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002172 }
2173
Willy Tarreau576507f2010-01-07 00:09:04 +01002174 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002175 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002176 goto resync_request;
2177
Willy Tarreau8f128b42014-11-28 15:07:47 +01002178 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002179 goto resync_request;
2180
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002181 /* FIXME: here we should call protocol handlers which rely on
2182 * both buffers.
2183 */
2184
2185
2186 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002187 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002188 * we're just in a data phase here since it means we have not
2189 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002190 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002191 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002192 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002193 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002194 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002195 req->analysers = 0;
2196 if (req->flags & CF_READ_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002197 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2198 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002199 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002200 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002201 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002202 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002203 else if (req->flags & CF_READ_TIMEOUT) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002204 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2205 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002206 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002207 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002208 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002209 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002210 else if (req->flags & CF_WRITE_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002211 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2212 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002213 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002214 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002215 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002216 }
2217 else {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002218 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2219 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002220 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002221 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002222 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002223 }
Willy Tarreau84455332009-03-15 22:34:05 +01002224 sess_set_term_flags(s);
Christopher Faulet5e1a9d72019-04-23 17:34:22 +02002225
2226 /* Abort the request if a client error occurred while
2227 * the backend stream-interface is in the SI_ST_INI
2228 * state. It is switched into the SI_ST_CLO state and
2229 * the request channel is erased. */
2230 if (si_b->state == SI_ST_INI) {
2231 si_b->state = SI_ST_CLO;
2232 channel_abort(req);
2233 if (IS_HTX_STRM(s))
2234 channel_htx_erase(req, htxbuf(&req->buf));
2235 else
2236 channel_erase(req);
2237 }
Willy Tarreau84455332009-03-15 22:34:05 +01002238 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002239 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002240 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002241 res->analysers = 0;
2242 if (res->flags & CF_READ_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002243 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2244 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002245 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002246 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002247 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002248 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002249 else if (res->flags & CF_READ_TIMEOUT) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002250 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2251 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002252 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002253 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002254 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002255 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002256 else if (res->flags & CF_WRITE_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002257 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2258 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002259 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002260 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002261 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002262 }
2263 else {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002264 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2265 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002266 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002267 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002268 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002269 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002270 sess_set_term_flags(s);
2271 }
Willy Tarreau84455332009-03-15 22:34:05 +01002272 }
2273
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002274 /*
2275 * Here we take care of forwarding unhandled data. This also includes
2276 * connection establishments and shutdown requests.
2277 */
2278
2279
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002280 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002281 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002282 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002283 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002284 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002285 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002286 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002287 (si_state_in(si_f->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002288 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002289 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002290 * attached to it. If any data are left in, we'll permit them to
2291 * move.
2292 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002293 channel_auto_read(req);
2294 channel_auto_connect(req);
2295 channel_auto_close(req);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002296
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002297 if (IS_HTX_STRM(s)) {
2298 struct htx *htx = htxbuf(&req->buf);
2299
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002300 /* We'll let data flow between the producer (if still connected)
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002301 * to the consumer.
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002302 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002303 co_set_data(req, htx->data);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002304 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002305 channel_htx_forward_forever(req, htx);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002306 }
2307 else {
2308 /* We'll let data flow between the producer (if still connected)
2309 * to the consumer (which might possibly not be connected yet).
2310 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002311 c_adv(req, ci_data(req));
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002312 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
2313 channel_forward_forever(req);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002314 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002315 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002316
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002317 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002318 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2319 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002320 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002321 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2322 (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 +01002323 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002324 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2325 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002326 (req->flags & CF_STREAMER_FAST)))) {
2327 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002328 }
2329
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002330 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002331 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002332
Willy Tarreau520d95e2009-09-19 21:04:57 +02002333 /* it's possible that an upper layer has requested a connection setup or abort.
2334 * There are 2 situations where we decide to establish a new connection :
2335 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002336 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002337 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002338 if (si_b->state == SI_ST_INI) {
Christopher Faulet5e1a9d72019-04-23 17:34:22 +02002339 if (!(req->flags & CF_SHUTW)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002340 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002341 /* If we have an appctx, there is no connect method, so we
2342 * immediately switch to the connected state, otherwise we
2343 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002344 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002345 si_b->state = SI_ST_REQ; /* new connection requested */
2346 si_b->conn_retries = s->be->conn_retries;
Olivier Houchard602bf7d2019-05-10 13:59:15 +02002347 if ((s->be->retry_type &~ PR_RE_CONN_FAILED) &&
2348 !(si_b->flags & SI_FL_D_L7_RETRY))
Olivier Houcharda254a372019-04-05 15:30:12 +02002349 si_b->flags |= SI_FL_L7_RETRY;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002350 }
Willy Tarreau73201222009-08-16 18:27:24 +02002351 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002352 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002353 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002354 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2355 channel_shutw_now(req); /* fix buffer flags upon abort */
2356 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002357 }
Willy Tarreau92795622009-03-06 12:51:23 +01002358 }
2359
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002360
2361 /* we may have a pending connection request, or a connection waiting
2362 * for completion.
2363 */
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002364 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 +02002365 /* prune the request variables and swap to the response variables. */
2366 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreaucda7f3f2018-10-28 13:44:36 +01002367 if (!LIST_ISEMPTY(&s->vars_reqres.head)) {
2368 vars_prune(&s->vars_reqres, s->sess, s);
2369 vars_init(&s->vars_reqres, SCOPE_RES);
2370 }
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002371 }
2372
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002373 do {
2374 /* nb: step 1 might switch from QUE to ASS, but we first want
2375 * to give a chance to step 2 to perform a redirect if needed.
2376 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002377 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002378 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002379 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002380 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002381
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002382 /* applets directly go to the ESTABLISHED state. Similarly,
2383 * servers experience the same fate when their connection
2384 * is reused.
2385 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002386 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002387 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002388
Willy Tarreaub44c8732013-12-31 23:16:50 +01002389 /* Now we can add the server name to a header (if requested) */
2390 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau4f283fa2019-06-05 14:34:03 +02002391 if (si_state_in(si_b->state, SI_SB_CON|SI_SB_RDY|SI_SB_EST) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002392 (s->be->server_id_hdr_name != NULL) &&
2393 (s->be->mode == PR_MODE_HTTP) &&
2394 objt_server(s->target)) {
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002395 http_send_name_header(s, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002396 }
2397
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002398 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002399 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Christopher Fauletfc9cfe42019-07-16 14:54:53 +02002400 http_perform_server_redirect(s, si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002401 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002402 }
2403
Willy Tarreau829bd472019-06-06 09:17:23 +02002404 /* Let's see if we can send the pending request now */
2405 si_sync_send(si_b);
2406
2407 /*
2408 * Now forward all shutdown requests between both sides of the request buffer
2409 */
2410
2411 /* first, let's check if the request buffer needs to shutdown(write), which may
2412 * happen either because the input is closed or because we want to force a close
2413 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2414 * the other side's timeout as well.
2415 */
2416 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
2417 (CF_AUTO_CLOSE|CF_SHUTR))) {
2418 channel_shutw_now(req);
2419 }
2420
2421 /* shutdown(write) pending */
2422 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2423 channel_is_empty(req))) {
2424 if (req->flags & CF_READ_ERROR)
2425 si_b->flags |= SI_FL_NOLINGER;
2426 si_shutw(si_b);
2427 }
2428
2429 /* shutdown(write) done on server side, we must stop the client too */
2430 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2431 !req->analysers))
2432 channel_shutr_now(req);
2433
2434 /* shutdown(read) pending */
2435 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2436 if (si_f->flags & SI_FL_NOHALF)
2437 si_f->flags |= SI_FL_NOLINGER;
2438 si_shutr(si_f);
2439 }
2440
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002441 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau829bd472019-06-06 09:17:23 +02002442 if (si_f->state == SI_ST_DIS ||
2443 si_state_in(si_b->state, SI_SB_RDY|SI_SB_DIS) ||
2444 (si_f->flags & SI_FL_ERR && si_f->state != SI_ST_CLO) ||
2445 (si_b->flags & SI_FL_ERR && si_b->state != SI_ST_CLO))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002446 goto resync_stream_interface;
2447
Willy Tarreau815a9b22010-07-27 17:15:12 +02002448 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau1ec9bb52019-06-06 14:45:26 +02002449 if ((req->flags ^ rqf_last) & (CF_SHUTR|CF_SHUTW))
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002450 goto resync_request;
2451
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002452 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002453
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002454 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002455 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002456 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002457 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002458 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002459 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002460 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002461 si_state_in(si_b->state, SI_SB_EST|SI_SB_DIS|SI_SB_CLO) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002462 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002463 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002464 * attached to it. If any data are left in, we'll permit them to
2465 * move.
2466 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002467 channel_auto_read(res);
2468 channel_auto_close(res);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002469
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002470 if (IS_HTX_STRM(s)) {
2471 struct htx *htx = htxbuf(&res->buf);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002472
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002473 /* We'll let data flow between the producer (if still connected)
2474 * to the consumer.
2475 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002476 co_set_data(res, htx->data);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002477 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002478 channel_htx_forward_forever(res, htx);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002479 }
2480 else {
2481 /* We'll let data flow between the producer (if still connected)
2482 * to the consumer.
2483 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002484 c_adv(res, ci_data(res));
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002485 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
2486 channel_forward_forever(res);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002487 }
Willy Tarreau42529c32015-07-09 18:38:57 +02002488
Willy Tarreauce887fd2012-05-12 12:50:00 +02002489 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002490 * tunnel timeout set, use it now. Note that we must respect
2491 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002492 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002493 if (!req->analysers && s->be->timeout.tunnel) {
2494 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002495 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002496
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002497 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2498 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002499 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2500 res->rto = s->be->timeout.serverfin;
2501 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2502 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002503 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2504 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002505
Willy Tarreau8f128b42014-11-28 15:07:47 +01002506 req->rex = tick_add(now_ms, req->rto);
2507 req->wex = tick_add(now_ms, req->wto);
2508 res->rex = tick_add(now_ms, res->rto);
2509 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002510 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002511 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002512
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002513 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002514 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2515 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002516 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002517 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2518 (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 +01002519 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002520 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2521 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002522 (res->flags & CF_STREAMER_FAST)))) {
2523 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002524 }
2525
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002526 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002527 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002528
Willy Tarreau829bd472019-06-06 09:17:23 +02002529 /* Let's see if we can send the pending response now */
2530 si_sync_send(si_f);
2531
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002532 /*
2533 * Now forward all shutdown requests between both sides of the buffer
2534 */
2535
2536 /*
2537 * FIXME: this is probably where we should produce error responses.
2538 */
2539
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002540 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002541 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002542 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002543 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002544 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002545
2546 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002547 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2548 channel_is_empty(res))) {
2549 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002550 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002551
2552 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002553 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2554 !res->analysers)
2555 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002556
2557 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002558 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2559 if (si_b->flags & SI_FL_NOHALF)
2560 si_b->flags |= SI_FL_NOLINGER;
2561 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002562 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002563
Willy Tarreau829bd472019-06-06 09:17:23 +02002564 if (si_f->state == SI_ST_DIS ||
2565 si_state_in(si_b->state, SI_SB_RDY|SI_SB_DIS) ||
2566 (si_f->flags & SI_FL_ERR && si_f->state != SI_ST_CLO) ||
2567 (si_b->flags & SI_FL_ERR && si_b->state != SI_ST_CLO))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002568 goto resync_stream_interface;
2569
Willy Tarreau3c5c0662019-06-06 14:32:49 +02002570 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002571 goto resync_request;
2572
Willy Tarreau8f128b42014-11-28 15:07:47 +01002573 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002574 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002575
Willy Tarreau829bd472019-06-06 09:17:23 +02002576 if (((req->flags ^ rqf_last) | (res->flags ^ rpf_last)) & CF_MASK_ANALYSER)
2577 goto resync_request;
2578
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002579 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002580 si_f->flags &= ~SI_FL_DONT_WAKE;
2581 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002582
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002583 /* This is needed only when debugging is enabled, to indicate
2584 * client-side or server-side close. Please note that in the unlikely
2585 * event where both sides would close at once, the sequence is reported
2586 * on the server side first.
2587 */
2588 if (unlikely((global.mode & MODE_DEBUG) &&
2589 (!(global.mode & MODE_QUIET) ||
2590 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002591 if (si_b->state == SI_ST_CLO &&
2592 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002593 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002594 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002595 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2596 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002597 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002598 }
2599
Willy Tarreau8f128b42014-11-28 15:07:47 +01002600 if (si_f->state == SI_ST_CLO &&
2601 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002602 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002603 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002604 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2605 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002606 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002607 }
2608 }
2609
Willy Tarreau7ab22adb2019-06-05 14:53:22 +02002610 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 +02002611 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002612 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002613
Willy Tarreaud14844a2018-11-08 18:15:29 +01002614 si_update_both(si_f, si_b);
Olivier Houchard53216e72018-10-10 15:46:36 +02002615
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002616 /* Trick: if a request is being waiting for the server to respond,
2617 * and if we know the server can timeout, we don't want the timeout
2618 * to expire on the client side first, but we're still interested
2619 * in passing data from the client to the server (eg: POST). Thus,
2620 * we can cancel the client's request timeout if the server's
2621 * request timeout is set and the server has not yet sent a response.
2622 */
2623
Willy Tarreau8f128b42014-11-28 15:07:47 +01002624 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2625 (tick_isset(req->wex) || tick_isset(res->rex))) {
2626 req->flags |= CF_READ_NOEXP;
2627 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002628 }
2629
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002630 /* Reset pending events now */
2631 s->pending_events = 0;
2632
Willy Tarreau798f4322012-11-08 14:49:17 +01002633 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002634 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002635 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2636 tick_first(tick_first(req->rex, req->wex),
2637 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002638 if (!req->analysers)
2639 req->analyse_exp = TICK_ETERNITY;
2640
2641 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2642 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2643 req->analyse_exp = tick_add(now_ms, 5000);
2644
2645 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002646
Willy Tarreau9a398be2017-11-10 17:14:23 +01002647 t->expire = tick_first(t->expire, res->analyse_exp);
2648
Willy Tarreau8f128b42014-11-28 15:07:47 +01002649 if (si_f->exp)
2650 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002651
Willy Tarreau8f128b42014-11-28 15:07:47 +01002652 if (si_b->exp)
2653 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002654
Christopher Faulet56803b12017-11-24 16:06:18 +01002655 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002656 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2657 " 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 +01002658 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2659 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002660
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002661 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002662 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002663 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002664 }
2665
Willy Tarreaue7dff022015-04-03 01:14:29 +02002666 if (s->flags & SF_BE_ASSIGNED)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002667 _HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002668
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002669 if (unlikely((global.mode & MODE_DEBUG) &&
2670 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002671 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002672 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002673 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2674 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002675 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002676 }
2677
2678 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002679 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002680
Willy Tarreaueee5b512015-04-03 23:46:31 +02002681 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002682 int n;
2683
Willy Tarreaueee5b512015-04-03 23:46:31 +02002684 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002685 if (n < 1 || n > 5)
2686 n = 0;
2687
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002688 if (sess->fe->mode == PR_MODE_HTTP) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002689 _HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002690 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002691 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002692 (s->be->mode == PR_MODE_HTTP)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002693 _HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2694 _HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002695 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002696 }
2697
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002698 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002699 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002700 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002701 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreau66425e32018-07-25 06:55:12 +02002702 /* we may need to know the position in the queue */
2703 pendconn_free(s);
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002704 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002705 }
2706
Willy Tarreau87b09662015-04-03 00:22:06 +02002707 /* update time stats for this stream */
2708 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002709
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002710 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002711 stream_free(s);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002712 task_destroy(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002713 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002714}
2715
Willy Tarreau87b09662015-04-03 00:22:06 +02002716/* Update the stream's backend and server time stats */
2717void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002718{
2719 int t_request;
2720 int t_queue;
2721 int t_connect;
2722 int t_data;
2723 int t_close;
2724 struct server *srv;
2725
2726 t_request = 0;
2727 t_queue = s->logs.t_queue;
2728 t_connect = s->logs.t_connect;
2729 t_close = s->logs.t_close;
2730 t_data = s->logs.t_data;
2731
2732 if (s->be->mode != PR_MODE_HTTP)
2733 t_data = t_connect;
2734
2735 if (t_connect < 0 || t_data < 0)
2736 return;
2737
2738 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2739 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2740
2741 t_data -= t_connect;
2742 t_connect -= t_queue;
2743 t_queue -= t_request;
2744
2745 srv = objt_server(s->target);
2746 if (srv) {
2747 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2748 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2749 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2750 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2751 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002752 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002753 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2754 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2755 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2756 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002757 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002758}
2759
Willy Tarreau7c669d72008-06-20 15:04:11 +02002760/*
2761 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002762 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002763 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002764 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002765 * server.
2766 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002767void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002768{
2769 if (sess->srv_conn == newsrv)
2770 return;
2771
2772 if (sess->srv_conn) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002773 _HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
2774 _HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
2775 __ha_barrier_atomic_store();
Willy Tarreau7c669d72008-06-20 15:04:11 +02002776 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2777 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002778 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002779 }
2780
2781 if (newsrv) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002782 _HA_ATOMIC_ADD(&newsrv->served, 1);
2783 _HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
2784 __ha_barrier_atomic_store();
Willy Tarreau7c669d72008-06-20 15:04:11 +02002785 if (newsrv->proxy->lbprm.server_take_conn)
2786 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002787 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002788 }
2789}
2790
Willy Tarreau84455332009-03-15 22:34:05 +01002791/* Handle server-side errors for default protocols. It is called whenever a a
2792 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002793 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002794 * them. It's installed as ->srv_error for the server-side stream_interface.
2795 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002796void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002797{
2798 int err_type = si->err_type;
2799 int err = 0, fin = 0;
2800
2801 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002802 err = SF_ERR_CLICL;
2803 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002804 }
2805 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002806 err = SF_ERR_CLICL;
2807 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002808 }
2809 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002810 err = SF_ERR_SRVTO;
2811 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002812 }
2813 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002814 err = SF_ERR_SRVCL;
2815 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002816 }
2817 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002818 err = SF_ERR_SRVTO;
2819 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002820 }
2821 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002822 err = SF_ERR_SRVCL;
2823 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002824 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002825 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002826 err = SF_ERR_RESOURCE;
2827 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002828 }
Willy Tarreau84455332009-03-15 22:34:05 +01002829 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002830 err = SF_ERR_INTERNAL;
2831 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002832 }
2833
Willy Tarreaue7dff022015-04-03 01:14:29 +02002834 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002835 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002836 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002837 s->flags |= fin;
2838}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002839
Willy Tarreaue7dff022015-04-03 01:14:29 +02002840/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002841void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002842{
Willy Tarreau87b09662015-04-03 00:22:06 +02002843 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002844 return;
2845
Willy Tarreau87b09662015-04-03 00:22:06 +02002846 channel_shutw_now(&stream->req);
2847 channel_shutr_now(&stream->res);
2848 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002849 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002850 stream->flags |= why;
2851 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002852}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002853
Willy Tarreau5484d582019-05-22 09:33:03 +02002854/* Appends a dump of the state of stream <s> into buffer <buf> which must have
2855 * preliminary be prepared by its caller, with each line prepended by prefix
2856 * <pfx>, and each line terminated by character <eol>.
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002857 */
Willy Tarreau5484d582019-05-22 09:33:03 +02002858void stream_dump(struct buffer *buf, const struct stream *s, const char *pfx, char eol)
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002859{
2860 const struct conn_stream *csf, *csb;
2861 const struct connection *cof, *cob;
2862 const struct appctx *acf, *acb;
2863 const struct server *srv;
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002864 const char *src = "unknown";
2865 const char *dst = "unknown";
2866 char pn[INET6_ADDRSTRLEN];
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002867 const struct channel *req, *res;
2868 const struct stream_interface *si_f, *si_b;
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002869
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002870 if (!s) {
Willy Tarreau5484d582019-05-22 09:33:03 +02002871 chunk_appendf(buf, "%sstrm=%p%c", pfx, s, eol);
2872 return;
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002873 }
2874
Willy Tarreau5484d582019-05-22 09:33:03 +02002875 if (s->obj_type != OBJ_TYPE_STREAM) {
2876 chunk_appendf(buf, "%sstrm=%p [invalid type=%d(%s)]%c",
2877 pfx, s, s->obj_type, obj_type_name(&s->obj_type), eol);
2878 return;
2879 }
2880
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002881 si_f = &s->si[0];
2882 si_b = &s->si[1];
2883 req = &s->req;
2884 res = &s->res;
2885
2886 csf = objt_cs(si_f->end);
2887 cof = cs_conn(csf);
2888 acf = objt_appctx(si_f->end);
Willy Tarreau71e34c12019-07-17 15:07:06 +02002889 if (cof && cof->src && addr_to_str(cof->src, pn, sizeof(pn)) >= 0)
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002890 src = pn;
2891 else if (acf)
2892 src = acf->applet->name;
2893
2894 csb = objt_cs(si_b->end);
2895 cob = cs_conn(csb);
2896 acb = objt_appctx(si_b->end);
2897 srv = objt_server(s->target);
2898 if (srv)
2899 dst = srv->id;
2900 else if (acb)
2901 dst = acb->applet->name;
2902
Willy Tarreau5484d582019-05-22 09:33:03 +02002903 chunk_appendf(buf,
2904 "%sstrm=%p src=%s fe=%s be=%s dst=%s%c"
2905 "%srqf=%x rqa=%x rpf=%x rpa=%x sif=%s,%x sib=%s,%x%c"
2906 "%saf=%p,%u csf=%p,%x%c"
2907 "%sab=%p,%u csb=%p,%x%c"
2908 "%scof=%p,%x:%s(%p)/%s(%p)/%s(%d)%c"
2909 "%scob=%p,%x:%s(%p)/%s(%p)/%s(%d)%c"
2910 "",
2911 pfx, s, src, s->sess->fe->id, s->be->id, dst, eol,
2912 pfx, req->flags, req->analysers, res->flags, res->analysers,
2913 si_state_str(si_f->state), si_f->flags,
2914 si_state_str(si_b->state), si_b->flags, eol,
2915 pfx, acf, acf ? acf->st0 : 0, csf, csf ? csf->flags : 0, eol,
2916 pfx, acb, acb ? acb->st0 : 0, csb, csb ? csb->flags : 0, eol,
2917 pfx, cof, cof ? cof->flags : 0, conn_get_mux_name(cof), cof?cof->ctx:0, conn_get_xprt_name(cof),
2918 cof ? cof->xprt_ctx : 0, conn_get_ctrl_name(cof), cof ? cof->handle.fd : 0, eol,
2919 pfx, cob, cob ? cob->flags : 0, conn_get_mux_name(cob), cob?cob->ctx:0, conn_get_xprt_name(cob),
2920 cob ? cob->xprt_ctx : 0, conn_get_ctrl_name(cob), cob ? cob->handle.fd : 0, eol);
2921}
2922
2923/* dumps an error message for type <type> at ptr <ptr> related to stream <s>,
Willy Tarreaub106ce12019-05-22 08:57:01 +02002924 * having reached loop rate <rate>, then aborts hoping to retrieve a core.
Willy Tarreau5484d582019-05-22 09:33:03 +02002925 */
2926void stream_dump_and_crash(enum obj_type *obj, int rate)
2927{
2928 const struct stream *s;
Willy Tarreau5484d582019-05-22 09:33:03 +02002929 char *msg = NULL;
2930 const void *ptr;
2931
2932 ptr = s = objt_stream(obj);
2933 if (!s) {
2934 const struct appctx *appctx = objt_appctx(obj);
2935 if (!appctx)
2936 return;
2937 ptr = appctx;
2938 s = si_strm(appctx->owner);
2939 if (!s)
2940 return;
2941 }
2942
Willy Tarreau5484d582019-05-22 09:33:03 +02002943 chunk_reset(&trash);
2944 stream_dump(&trash, s, "", ' ');
Willy Tarreaub106ce12019-05-22 08:57:01 +02002945 memprintf(&msg,
2946 "A bogus %s [%p] is spinning at %d calls per second and refuses to die, "
2947 "aborting now! Please report this error to developers "
2948 "[%s]\n",
Willy Tarreau5484d582019-05-22 09:33:03 +02002949 obj_type_name(obj), ptr, rate, trash.area);
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002950
2951 ha_alert("%s", msg);
2952 send_log(NULL, LOG_EMERG, "%s", msg);
2953 abort();
2954}
2955
Willy Tarreau8b22a712010-06-18 17:46:06 +02002956/************************************************************************/
2957/* All supported ACL keywords must be declared here. */
2958/************************************************************************/
2959
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002960/* 0=OK, <0=Alert, >0=Warning */
2961static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2962 struct proxy *px, struct act_rule *rule,
2963 char **err)
2964{
2965 struct action_kw *kw;
2966
2967 /* Check if the service name exists. */
2968 if (*(args[*cur_arg]) == 0) {
2969 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002970 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002971 }
2972
2973 /* lookup for keyword corresponding to a service. */
2974 kw = action_lookup(&service_keywords, args[*cur_arg]);
2975 if (!kw) {
2976 memprintf(err, "'%s' unknown service name.", args[1]);
2977 return ACT_RET_PRS_ERR;
2978 }
2979 (*cur_arg)++;
2980
2981 /* executes specific rule parser. */
2982 rule->kw = kw;
2983 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2984 return ACT_RET_PRS_ERR;
2985
2986 /* Register processing function. */
2987 rule->action_ptr = process_use_service;
2988 rule->action = ACT_CUSTOM;
2989
2990 return ACT_RET_PRS_OK;
2991}
2992
2993void service_keywords_register(struct action_kw_list *kw_list)
2994{
2995 LIST_ADDQ(&service_keywords, &kw_list->list);
2996}
2997
Willy Tarreau679bba12019-03-19 08:08:10 +01002998/* Lists the known services on <out> */
2999void list_services(FILE *out)
3000{
3001 struct action_kw_list *kw_list;
3002 int found = 0;
3003 int i;
3004
3005 fprintf(out, "Available services :");
3006 list_for_each_entry(kw_list, &service_keywords, list) {
3007 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
3008 if (!found)
3009 fputc('\n', out);
3010 found = 1;
3011 fprintf(out, "\t%s\n", kw_list->kw[i].kw);
3012 }
3013 }
3014 if (!found)
3015 fprintf(out, " none\n");
3016}
William Lallemand4c5b4d52016-11-21 08:51:11 +01003017
3018/* This function dumps a complete stream state onto the stream interface's
3019 * read buffer. The stream has to be set in strm. It returns 0 if the output
3020 * buffer is full and it needs to be called again, otherwise non-zero. It is
3021 * designed to be called from stats_dump_strm_to_buffer() below.
3022 */
3023static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
3024{
3025 struct appctx *appctx = __objt_appctx(si->end);
3026 struct tm tm;
3027 extern const char *monthname[12];
3028 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003029 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003030 struct connection *conn;
3031 struct appctx *tmpctx;
3032
3033 chunk_reset(&trash);
3034
3035 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
3036 /* stream changed, no need to go any further */
3037 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreaue6e52362019-01-04 17:42:57 +01003038 if (ci_putchk(si_ic(si), &trash) == -1)
3039 goto full;
3040 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003041 }
3042
3043 switch (appctx->ctx.sess.section) {
3044 case 0: /* main status of the stream */
3045 appctx->ctx.sess.uid = strm->uniq_id;
3046 appctx->ctx.sess.section = 1;
3047 /* fall through */
3048
3049 case 1:
3050 get_localtime(strm->logs.accept_date.tv_sec, &tm);
3051 chunk_appendf(&trash,
3052 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
3053 strm,
3054 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
3055 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
3056 strm->uniq_id,
3057 strm_li(strm) ? strm_li(strm)->proto->name : "?");
3058
3059 conn = objt_conn(strm_orig(strm));
Willy Tarreau71e34c12019-07-17 15:07:06 +02003060 switch (conn && conn_get_src(conn) ? addr_to_str(conn->src, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003061 case AF_INET:
3062 case AF_INET6:
3063 chunk_appendf(&trash, " source=%s:%d\n",
Willy Tarreau71e34c12019-07-17 15:07:06 +02003064 pn, get_host_port(conn->src));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003065 break;
3066 case AF_UNIX:
3067 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
3068 break;
3069 default:
3070 /* no more information to print right now */
3071 chunk_appendf(&trash, "\n");
3072 break;
3073 }
3074
3075 chunk_appendf(&trash,
Willy Tarreauadf7a152019-01-07 10:10:07 +01003076 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p waiting=%d\n",
3077 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos,
3078 !LIST_ISEMPTY(&strm->buffer_wait.list));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003079
3080 chunk_appendf(&trash,
3081 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
3082 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
3083 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
3084 strm_li(strm) ? strm_li(strm)->luid : 0);
3085
Willy Tarreau71e34c12019-07-17 15:07:06 +02003086 switch (conn && conn_get_dst(conn) ? addr_to_str(conn->dst, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003087 case AF_INET:
3088 case AF_INET6:
3089 chunk_appendf(&trash, " addr=%s:%d\n",
Willy Tarreau71e34c12019-07-17 15:07:06 +02003090 pn, get_host_port(conn->dst));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003091 break;
3092 case AF_UNIX:
3093 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
3094 break;
3095 default:
3096 /* no more information to print right now */
3097 chunk_appendf(&trash, "\n");
3098 break;
3099 }
3100
3101 if (strm->be->cap & PR_CAP_BE)
3102 chunk_appendf(&trash,
3103 " backend=%s (id=%u mode=%s)",
3104 strm->be->id,
3105 strm->be->uuid, strm->be->mode ? "http" : "tcp");
3106 else
3107 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
3108
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003109 cs = objt_cs(strm->si[1].end);
3110 conn = cs_conn(cs);
3111
Willy Tarreau71e34c12019-07-17 15:07:06 +02003112 switch (conn && conn_get_src(conn) ? addr_to_str(conn->src, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003113 case AF_INET:
3114 case AF_INET6:
3115 chunk_appendf(&trash, " addr=%s:%d\n",
Willy Tarreau71e34c12019-07-17 15:07:06 +02003116 pn, get_host_port(conn->src));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003117 break;
3118 case AF_UNIX:
3119 chunk_appendf(&trash, " addr=unix\n");
3120 break;
3121 default:
3122 /* no more information to print right now */
3123 chunk_appendf(&trash, "\n");
3124 break;
3125 }
3126
3127 if (strm->be->cap & PR_CAP_BE)
3128 chunk_appendf(&trash,
3129 " server=%s (id=%u)",
3130 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
3131 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
3132 else
3133 chunk_appendf(&trash, " server=<NONE> (id=-1)");
3134
Willy Tarreau71e34c12019-07-17 15:07:06 +02003135 switch (conn && conn_get_dst(conn) ? addr_to_str(conn->dst, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003136 case AF_INET:
3137 case AF_INET6:
3138 chunk_appendf(&trash, " addr=%s:%d\n",
Willy Tarreau71e34c12019-07-17 15:07:06 +02003139 pn, get_host_port(conn->dst));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003140 break;
3141 case AF_UNIX:
3142 chunk_appendf(&trash, " addr=unix\n");
3143 break;
3144 default:
3145 /* no more information to print right now */
3146 chunk_appendf(&trash, "\n");
3147 break;
3148 }
3149
3150 chunk_appendf(&trash,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003151 " task=%p (state=0x%02x nice=%d calls=%u rate=%u exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003152 strm->task,
3153 strm->task->state,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003154 strm->task->nice, strm->task->calls, read_freq_ctr(&strm->call_rate),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003155 strm->task->expire ?
3156 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
3157 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
3158 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01003159 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003160 task_in_rq(strm->task) ? ", running" : "");
3161
3162 chunk_appendf(&trash,
3163 " age=%s)\n",
3164 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
3165
3166 if (strm->txn)
3167 chunk_appendf(&trash,
Christopher Fauletbcac7862019-07-17 10:46:50 +02003168 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s req.f=0x%02x rsp.f=0x%02x\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003169 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau7778b592019-01-07 10:38:10 +01003170 h1_msg_state_str(strm->txn->req.msg_state), h1_msg_state_str(strm->txn->rsp.msg_state),
Christopher Fauletbcac7862019-07-17 10:46:50 +02003171 strm->txn->req.flags, strm->txn->rsp.flags);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003172
3173 chunk_appendf(&trash,
Christopher Faulet224a2d72019-01-04 15:06:13 +01003174 " 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 +01003175 &strm->si[0],
3176 si_state_str(strm->si[0].state),
3177 strm->si[0].flags,
3178 obj_type_name(strm->si[0].end),
3179 obj_base_ptr(strm->si[0].end),
3180 strm->si[0].exp ?
3181 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
3182 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
3183 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Faulet224a2d72019-01-04 15:06:13 +01003184 strm->si[0].err_type, strm->si[0].wait_event.events);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003185
3186 chunk_appendf(&trash,
Christopher Faulet224a2d72019-01-04 15:06:13 +01003187 " 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 +01003188 &strm->si[1],
3189 si_state_str(strm->si[1].state),
3190 strm->si[1].flags,
3191 obj_type_name(strm->si[1].end),
3192 obj_base_ptr(strm->si[1].end),
3193 strm->si[1].exp ?
3194 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
3195 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
3196 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Faulet224a2d72019-01-04 15:06:13 +01003197 strm->si[1].err_type, strm->si[1].wait_event.events);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003198
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003199 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
3200 conn = cs->conn;
3201
William Lallemand4c5b4d52016-11-21 08:51:11 +01003202 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003203 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003204 conn,
3205 conn_get_ctrl_name(conn),
3206 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003207 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003208 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003209 obj_type_name(conn->target),
3210 obj_base_ptr(conn->target));
3211
3212 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01003213 " 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 +01003214 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003215 conn->handle.fd,
3216 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01003217 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003218 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003219 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
Willy Tarreaufb3b1b02018-12-18 14:28:24 +01003220
3221 chunk_appendf(&trash, " cs=%p csf=0x%08x ctx=%p\n", cs, cs->flags, cs->ctx);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003222 }
3223 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
3224 chunk_appendf(&trash,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003225 " 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 +01003226 tmpctx,
3227 tmpctx->st0,
3228 tmpctx->st1,
3229 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003230 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003231 tmpctx->thread_mask,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003232 tmpctx->t->nice, tmpctx->t->calls, read_freq_ctr(&tmpctx->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003233 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003234 }
3235
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003236 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
3237 conn = cs->conn;
3238
William Lallemand4c5b4d52016-11-21 08:51:11 +01003239 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003240 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003241 conn,
3242 conn_get_ctrl_name(conn),
3243 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003244 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003245 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003246 obj_type_name(conn->target),
3247 obj_base_ptr(conn->target));
3248
3249 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01003250 " 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 +01003251 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003252 conn->handle.fd,
3253 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01003254 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003255 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003256 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
Willy Tarreaufb3b1b02018-12-18 14:28:24 +01003257
3258 chunk_appendf(&trash, " cs=%p csf=0x%08x ctx=%p\n", cs, cs->flags, cs->ctx);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003259 }
3260 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
3261 chunk_appendf(&trash,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003262 " 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 +01003263 tmpctx,
3264 tmpctx->st0,
3265 tmpctx->st1,
3266 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003267 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003268 tmpctx->thread_mask,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003269 tmpctx->t->nice, tmpctx->t->calls, read_freq_ctr(&tmpctx->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003270 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003271 }
3272
3273 chunk_appendf(&trash,
3274 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3275 " an_exp=%s",
3276 &strm->req,
3277 strm->req.flags, strm->req.analysers,
3278 strm->req.pipe ? strm->req.pipe->data : 0,
3279 strm->req.to_forward, strm->req.total,
3280 strm->req.analyse_exp ?
3281 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
3282 TICKS_TO_MS(1000)) : "<NEVER>");
3283
3284 chunk_appendf(&trash,
3285 " rex=%s",
3286 strm->req.rex ?
3287 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
3288 TICKS_TO_MS(1000)) : "<NEVER>");
3289
3290 chunk_appendf(&trash,
3291 " wex=%s\n"
Christopher Fauletbcac7862019-07-17 10:46:50 +02003292 " buf=%p data=%p o=%u p=%u i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003293 strm->req.wex ?
3294 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
3295 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003296 &strm->req.buf,
3297 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Christopher Fauletbcac7862019-07-17 10:46:50 +02003298 (unsigned int)ci_head_ofs(&strm->req), (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003299 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003300
Christopher Fauletb9af8812019-01-04 14:30:44 +01003301 if (IS_HTX_STRM(strm)) {
3302 struct htx *htx = htxbuf(&strm->req.buf);
3303
3304 chunk_appendf(&trash,
Willy Tarreaub84e67f2019-01-07 10:01:34 +01003305 " htx=%p flags=0x%x size=%u data=%u used=%u wrap=%s extra=%llu\n",
Christopher Faulet192c6a22019-06-11 16:32:24 +02003306 htx, htx->flags, htx->size, htx->data, htx_nbblks(htx),
Christopher Faulet28f29c72019-04-30 17:55:45 +02003307 (htx->tail >= htx->head) ? "NO" : "YES",
Christopher Fauletb9af8812019-01-04 14:30:44 +01003308 (unsigned long long)htx->extra);
3309 }
3310
William Lallemand4c5b4d52016-11-21 08:51:11 +01003311 chunk_appendf(&trash,
3312 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3313 " an_exp=%s",
3314 &strm->res,
3315 strm->res.flags, strm->res.analysers,
3316 strm->res.pipe ? strm->res.pipe->data : 0,
3317 strm->res.to_forward, strm->res.total,
3318 strm->res.analyse_exp ?
3319 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
3320 TICKS_TO_MS(1000)) : "<NEVER>");
3321
3322 chunk_appendf(&trash,
3323 " rex=%s",
3324 strm->res.rex ?
3325 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3326 TICKS_TO_MS(1000)) : "<NEVER>");
3327
3328 chunk_appendf(&trash,
3329 " wex=%s\n"
Christopher Fauletbcac7862019-07-17 10:46:50 +02003330 " buf=%p data=%p o=%u p=%u i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003331 strm->res.wex ?
3332 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3333 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003334 &strm->res.buf,
3335 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Christopher Fauletbcac7862019-07-17 10:46:50 +02003336 (unsigned int)ci_head_ofs(&strm->res), (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003337 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003338
Christopher Fauletb9af8812019-01-04 14:30:44 +01003339 if (IS_HTX_STRM(strm)) {
3340 struct htx *htx = htxbuf(&strm->res.buf);
3341
3342 chunk_appendf(&trash,
3343 " htx=%p flags=0x%x size=%u data=%u used=%u wrap=%s extra=%llu\n",
Christopher Faulet192c6a22019-06-11 16:32:24 +02003344 htx, htx->flags, htx->size, htx->data, htx_nbblks(htx),
Christopher Faulet28f29c72019-04-30 17:55:45 +02003345 (htx->tail >= htx->head) ? "NO" : "YES",
Christopher Fauletb9af8812019-01-04 14:30:44 +01003346 (unsigned long long)htx->extra);
3347 }
3348
Willy Tarreaue6e52362019-01-04 17:42:57 +01003349 if (ci_putchk(si_ic(si), &trash) == -1)
3350 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003351
3352 /* use other states to dump the contents */
3353 }
3354 /* end of dump */
Willy Tarreaue6e52362019-01-04 17:42:57 +01003355 done:
William Lallemand4c5b4d52016-11-21 08:51:11 +01003356 appctx->ctx.sess.uid = 0;
3357 appctx->ctx.sess.section = 0;
3358 return 1;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003359 full:
3360 return 0;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003361}
3362
3363
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003364static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003365{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003366 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3367 return 1;
3368
3369 if (*args[2] && strcmp(args[2], "all") == 0)
3370 appctx->ctx.sess.target = (void *)-1;
3371 else if (*args[2])
3372 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3373 else
3374 appctx->ctx.sess.target = NULL;
3375 appctx->ctx.sess.section = 0; /* start with stream status */
3376 appctx->ctx.sess.pos = 0;
3377
3378 return 0;
3379}
3380
3381/* This function dumps all streams' states onto the stream interface's
3382 * read buffer. It returns 0 if the output buffer is full and it needs
Willy Tarreaue6e52362019-01-04 17:42:57 +01003383 * to be called again, otherwise non-zero. It proceeds in an isolated
3384 * thread so there is no thread safety issue here.
William Lallemand4c5b4d52016-11-21 08:51:11 +01003385 */
3386static int cli_io_handler_dump_sess(struct appctx *appctx)
3387{
3388 struct stream_interface *si = appctx->owner;
3389 struct connection *conn;
3390
Willy Tarreaue6e52362019-01-04 17:42:57 +01003391 thread_isolate();
3392
William Lallemand4c5b4d52016-11-21 08:51:11 +01003393 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3394 /* If we're forced to shut down, we might have to remove our
3395 * reference to the last stream being dumped.
3396 */
3397 if (appctx->st2 == STAT_ST_LIST) {
3398 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3399 LIST_DEL(&appctx->ctx.sess.bref.users);
3400 LIST_INIT(&appctx->ctx.sess.bref.users);
3401 }
3402 }
Willy Tarreaue6e52362019-01-04 17:42:57 +01003403 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003404 }
3405
3406 chunk_reset(&trash);
3407
3408 switch (appctx->st2) {
3409 case STAT_ST_INIT:
3410 /* the function had not been called yet, let's prepare the
3411 * buffer for a response. We initialize the current stream
3412 * pointer to the first in the global list. When a target
3413 * stream is being destroyed, it is responsible for updating
3414 * this pointer. We know we have reached the end when this
3415 * pointer points back to the head of the streams list.
3416 */
3417 LIST_INIT(&appctx->ctx.sess.bref.users);
3418 appctx->ctx.sess.bref.ref = streams.n;
3419 appctx->st2 = STAT_ST_LIST;
3420 /* fall through */
3421
3422 case STAT_ST_LIST:
3423 /* first, let's detach the back-ref from a possible previous stream */
3424 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3425 LIST_DEL(&appctx->ctx.sess.bref.users);
3426 LIST_INIT(&appctx->ctx.sess.bref.users);
3427 }
3428
3429 /* and start from where we stopped */
3430 while (appctx->ctx.sess.bref.ref != &streams) {
3431 char pn[INET6_ADDRSTRLEN];
3432 struct stream *curr_strm;
3433
3434 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3435
3436 if (appctx->ctx.sess.target) {
3437 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3438 goto next_sess;
3439
3440 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3441 /* call the proper dump() function and return if we're missing space */
Willy Tarreaue6e52362019-01-04 17:42:57 +01003442 if (!stats_dump_full_strm_to_buffer(si, curr_strm))
3443 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003444
3445 /* stream dump complete */
3446 LIST_DEL(&appctx->ctx.sess.bref.users);
3447 LIST_INIT(&appctx->ctx.sess.bref.users);
3448 if (appctx->ctx.sess.target != (void *)-1) {
3449 appctx->ctx.sess.target = NULL;
3450 break;
3451 }
3452 else
3453 goto next_sess;
3454 }
3455
3456 chunk_appendf(&trash,
3457 "%p: proto=%s",
3458 curr_strm,
3459 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3460
3461 conn = objt_conn(strm_orig(curr_strm));
Willy Tarreau71e34c12019-07-17 15:07:06 +02003462 switch (conn && conn_get_src(conn) ? addr_to_str(conn->src, pn, sizeof(pn)) : AF_UNSPEC) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003463 case AF_INET:
3464 case AF_INET6:
3465 chunk_appendf(&trash,
3466 " src=%s:%d fe=%s be=%s srv=%s",
3467 pn,
Willy Tarreau71e34c12019-07-17 15:07:06 +02003468 get_host_port(conn->src),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003469 strm_fe(curr_strm)->id,
3470 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3471 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3472 );
3473 break;
3474 case AF_UNIX:
3475 chunk_appendf(&trash,
3476 " src=unix:%d fe=%s be=%s srv=%s",
3477 strm_li(curr_strm)->luid,
3478 strm_fe(curr_strm)->id,
3479 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3480 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3481 );
3482 break;
3483 }
3484
3485 chunk_appendf(&trash,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003486 " ts=%02x age=%s calls=%u rate=%u cpu=%llu lat=%llu",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003487 curr_strm->task->state,
3488 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003489 curr_strm->task->calls, read_freq_ctr(&curr_strm->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003490 (unsigned long long)curr_strm->task->cpu_time, (unsigned long long)curr_strm->task->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003491
3492 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003493 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003494 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003495 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003496 curr_strm->req.analysers,
3497 curr_strm->req.rex ?
3498 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3499 TICKS_TO_MS(1000)) : "");
3500
3501 chunk_appendf(&trash,
3502 ",wx=%s",
3503 curr_strm->req.wex ?
3504 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3505 TICKS_TO_MS(1000)) : "");
3506
3507 chunk_appendf(&trash,
3508 ",ax=%s]",
3509 curr_strm->req.analyse_exp ?
3510 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3511 TICKS_TO_MS(1000)) : "");
3512
3513 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003514 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003515 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003516 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003517 curr_strm->res.analysers,
3518 curr_strm->res.rex ?
3519 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3520 TICKS_TO_MS(1000)) : "");
3521
3522 chunk_appendf(&trash,
3523 ",wx=%s",
3524 curr_strm->res.wex ?
3525 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3526 TICKS_TO_MS(1000)) : "");
3527
3528 chunk_appendf(&trash,
3529 ",ax=%s]",
3530 curr_strm->res.analyse_exp ?
3531 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3532 TICKS_TO_MS(1000)) : "");
3533
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003534 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003535 chunk_appendf(&trash,
3536 " s0=[%d,%1xh,fd=%d,ex=%s]",
3537 curr_strm->si[0].state,
3538 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003539 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003540 curr_strm->si[0].exp ?
3541 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3542 TICKS_TO_MS(1000)) : "");
3543
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003544 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003545 chunk_appendf(&trash,
3546 " s1=[%d,%1xh,fd=%d,ex=%s]",
3547 curr_strm->si[1].state,
3548 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003549 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003550 curr_strm->si[1].exp ?
3551 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3552 TICKS_TO_MS(1000)) : "");
3553
3554 chunk_appendf(&trash,
3555 " exp=%s",
3556 curr_strm->task->expire ?
3557 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3558 TICKS_TO_MS(1000)) : "");
3559 if (task_in_rq(curr_strm->task))
3560 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3561
3562 chunk_appendf(&trash, "\n");
3563
Willy Tarreau06d80a92017-10-19 14:32:15 +02003564 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003565 /* let's try again later from this stream. We add ourselves into
3566 * this stream's users so that it can remove us upon termination.
3567 */
William Lallemand4c5b4d52016-11-21 08:51:11 +01003568 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Willy Tarreaue6e52362019-01-04 17:42:57 +01003569 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003570 }
3571
3572 next_sess:
3573 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3574 }
3575
3576 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3577 /* specified stream not found */
3578 if (appctx->ctx.sess.section > 0)
3579 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3580 else
3581 chunk_appendf(&trash, "Session not found.\n");
3582
Willy Tarreaue6e52362019-01-04 17:42:57 +01003583 if (ci_putchk(si_ic(si), &trash) == -1)
3584 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003585
3586 appctx->ctx.sess.target = NULL;
3587 appctx->ctx.sess.uid = 0;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003588 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003589 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003590 /* fall through */
3591
3592 default:
3593 appctx->st2 = STAT_ST_FIN;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003594 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003595 }
Willy Tarreaue6e52362019-01-04 17:42:57 +01003596 done:
3597 thread_release();
3598 return 1;
3599 full:
3600 thread_release();
3601 si_rx_room_blk(si);
3602 return 0;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003603}
3604
3605static void cli_release_show_sess(struct appctx *appctx)
3606{
3607 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003608 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003609 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3610 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003611 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003612 }
3613}
3614
Willy Tarreau61b65212016-11-24 11:09:25 +01003615/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003616static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003617{
3618 struct stream *strm, *ptr;
3619
3620 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3621 return 1;
3622
3623 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003624 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003625 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003626 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003627 return 1;
3628 }
3629
3630 ptr = (void *)strtoul(args[2], NULL, 0);
3631
3632 /* first, look for the requested stream in the stream table */
3633 list_for_each_entry(strm, &streams, list) {
3634 if (strm == ptr)
3635 break;
3636 }
3637
3638 /* do we have the stream ? */
3639 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003640 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003641 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003642 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003643 return 1;
3644 }
3645
3646 stream_shutdown(strm, SF_ERR_KILLED);
3647 return 1;
3648}
3649
Willy Tarreau4e46b622016-11-23 16:50:48 +01003650/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003651static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003652{
3653 struct server *sv;
3654 struct stream *strm, *strm_bck;
3655
3656 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3657 return 1;
3658
3659 sv = cli_find_server(appctx, args[3]);
3660 if (!sv)
3661 return 1;
3662
3663 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003664 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003665 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3666 if (strm->srv_conn == sv)
3667 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003668 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003669 return 1;
3670}
3671
William Lallemand4c5b4d52016-11-21 08:51:11 +01003672/* register cli keywords */
3673static struct cli_kw_list cli_kws = {{ },{
3674 { { "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 +01003675 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003676 { { "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 +01003677 {{},}
3678}};
3679
Willy Tarreau0108d902018-11-25 19:14:37 +01003680INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
3681
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003682/* main configuration keyword registration. */
3683static struct action_kw_list stream_tcp_keywords = { ILH, {
3684 { "use-service", stream_parse_use_service },
3685 { /* END */ }
3686}};
3687
Willy Tarreau0108d902018-11-25 19:14:37 +01003688INITCALL1(STG_REGISTER, tcp_req_cont_keywords_register, &stream_tcp_keywords);
3689
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003690static struct action_kw_list stream_http_keywords = { ILH, {
3691 { "use-service", stream_parse_use_service },
3692 { /* END */ }
3693}};
3694
Willy Tarreau0108d902018-11-25 19:14:37 +01003695INITCALL1(STG_REGISTER, http_req_keywords_register, &stream_http_keywords);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003696
Willy Tarreaubaaee002006-06-26 02:48:02 +02003697/*
3698 * Local variables:
3699 * c-indent-level: 8
3700 * c-basic-offset: 8
3701 * End:
3702 */