blob: 1e884658290761211b855ba32ce4224690b08114 [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>
Baptiste Assmann333939c2019-01-21 08:34:50 +010042#include <proto/dns.h>
William Lallemand9ed62032016-11-21 17:49:11 +010043#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020044#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020045#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020046#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020047#include <proto/frontend.h>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010048#include <proto/hdr_idx.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>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010057#include <proto/proto_http.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 }
248 /* Set SF_HTX flag for HTX frontends. */
249 if (sess->fe->mode == PR_MODE_HTTP && sess->fe->options2 & PR_O2_USE_HTX)
250 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);
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200346 tasklet_free(s->si[1].wait_event.task);
Willy Tarreaue5f229e2018-10-15 11:08:55 +0200347 LIST_DEL(&s->list);
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200348out_fail_alloc_si1:
Olivier Houchardfa8aa862018-10-10 18:25:41 +0200349 tasklet_free(s->si[0].wait_event.task);
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_hdr_idx, s->txn->hdr_idx.v);
432 pool_free(pool_head_http_txn, s->txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200433 s->txn = NULL;
434 }
435
Baptiste Assmann333939c2019-01-21 08:34:50 +0100436 if (s->dns_ctx.dns_requester) {
437 free(s->dns_ctx.hostname_dn); s->dns_ctx.hostname_dn = NULL;
438 s->dns_ctx.hostname_dn_len = 0;
439 dns_unlink_resolution(s->dns_ctx.dns_requester);
440
441 pool_free(dns_requester_pool, s->dns_ctx.dns_requester);
442 s->dns_ctx.dns_requester = NULL;
443 }
444
Christopher Fauletd7c91962015-04-30 11:48:27 +0200445 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100446 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200447
Willy Tarreau92fb9832007-10-16 17:34:28 +0200448 if (fe) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100449 pool_free(fe->rsp_cap_pool, s->res_cap);
450 pool_free(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200451 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100452
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200453 /* Cleanup all variable contexts. */
Willy Tarreaucda7f3f2018-10-28 13:44:36 +0100454 if (!LIST_ISEMPTY(&s->vars_txn.head))
455 vars_prune(&s->vars_txn, s->sess, s);
456 if (!LIST_ISEMPTY(&s->vars_reqres.head))
457 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200458
Willy Tarreau87b09662015-04-03 00:22:06 +0200459 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200460
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100461 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100462 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100463 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200464 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100465 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100466 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100467 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200468 if (s->list.n != &streams)
469 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100470 bref->ref = s->list.n;
471 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100472 LIST_DEL(&s->list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100473 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
Emeric Brun6b35e9b2017-06-30 16:23:45 +0200474
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100475 /* applets do not release session yet */
476 must_free_sess = objt_appctx(sess->origin) && sess->origin == s->si[0].end;
477
Olivier Houchard4fdec7a2018-10-11 17:09:14 +0200478
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200479 si_release_endpoint(&s->si[1]);
480 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200481
Olivier Houchardd7bd3e32018-10-18 16:22:02 +0200482 tasklet_free(s->si[0].wait_event.task);
483 tasklet_free(s->si[1].wait_event.task);
484
Olivier Houcharda254a372019-04-05 15:30:12 +0200485 b_free(&s->si[1].l7_buffer);
Olivier Houchard25607af2018-11-23 14:50:47 +0100486 if (must_free_sess) {
487 sess->origin = NULL;
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100488 session_free(sess);
Olivier Houchard25607af2018-11-23 14:50:47 +0100489 }
Willy Tarreau5bcfd562017-11-29 14:05:38 +0100490
Willy Tarreaubafbe012017-11-24 17:34:44 +0100491 pool_free(pool_head_stream, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200492
493 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200494 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreaubafbe012017-11-24 17:34:44 +0100495 pool_flush(pool_head_buffer);
496 pool_flush(pool_head_http_txn);
497 pool_flush(pool_head_hdr_idx);
498 pool_flush(pool_head_requri);
499 pool_flush(pool_head_capture);
500 pool_flush(pool_head_stream);
501 pool_flush(pool_head_session);
502 pool_flush(pool_head_connection);
503 pool_flush(pool_head_pendconn);
504 pool_flush(fe->req_cap_pool);
505 pool_flush(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200506 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200507}
508
Willy Tarreau656859d2014-11-25 19:46:36 +0100509
Willy Tarreau87b09662015-04-03 00:22:06 +0200510/* Allocates a work buffer for stream <s>. It is meant to be called inside
511 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200512 * to work fine, which is the response buffer so that an error message may be
513 * built and returned. Response buffers may be allocated from the reserve, this
514 * is critical to ensure that a response may always flow and will never block a
515 * server from releasing a connection. Returns 0 in case of failure, non-zero
516 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100517 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100518static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100519{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100520 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100521 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100522 LIST_DEL(&s->buffer_wait.list);
523 LIST_INIT(&s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100524 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100525 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100526
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200527 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100528 return 1;
529
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100530 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100531 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100532 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
Willy Tarreau656859d2014-11-25 19:46:36 +0100533 return 0;
534}
535
536/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100537 * update() functions. It will try to wake up as many tasks/applets as the
538 * number of buffers that it releases. In practice, most often streams are
539 * blocked on a single buffer, so it makes sense to try to wake two up when two
540 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100541 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200542void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100543{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100544 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100545
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200546 if (c_size(&s->req) && c_empty(&s->req)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100547 offer = 1;
548 b_free(&s->req.buf);
549 }
Willy Tarreau0c7ed5d2018-07-10 09:53:31 +0200550 if (c_size(&s->res) && c_empty(&s->res)) {
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100551 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100552 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100553 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100554
Willy Tarreaubf883e02014-11-25 21:10:35 +0100555 /* if we're certain to have at least 1 buffer available, and there is
556 * someone waiting, we can wake up a waiter and offer them.
557 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100558 if (offer)
Olivier Houchard673867c2018-05-25 16:58:52 +0200559 offer_buffers(s, tasks_run_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100560}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200561
Willy Tarreau87b09662015-04-03 00:22:06 +0200562void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100563{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200564 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100565 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200566 void *ptr1,*ptr2;
Emeric Brun819fc6f2017-06-13 19:37:32 +0200567 struct stksess *ts;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100568 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100569
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100570 bytes = s->req.total - s->logs.bytes_in;
571 s->logs.bytes_in = s->req.total;
572 if (bytes) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100573 _HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_in, bytes);
574 _HA_ATOMIC_ADD(&s->be->be_counters.bytes_in, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100575
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100576 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100577 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_in, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200578
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200579 if (sess->listener && sess->listener->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100580 _HA_ATOMIC_ADD(&sess->listener->counters->bytes_in, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200581
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100582 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200583 struct stkctr *stkctr = &s->stkctr[i];
584
Emeric Brun819fc6f2017-06-13 19:37:32 +0200585 ts = stkctr_entry(stkctr);
586 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200587 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200588 ts = stkctr_entry(stkctr);
589 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200590 continue;
591 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200592
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100593 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200594 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200595 if (ptr1)
596 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200597
Emeric Brun819fc6f2017-06-13 19:37:32 +0200598 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_IN_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200599 if (ptr2)
600 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200601 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100602 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200603
604 /* If data was modified, we need to touch to re-schedule sync */
605 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200606 stktable_touch_local(stkctr->table, ts, 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100607 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100608 }
609
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100610 bytes = s->res.total - s->logs.bytes_out;
611 s->logs.bytes_out = s->res.total;
612 if (bytes) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100613 _HA_ATOMIC_ADD(&sess->fe->fe_counters.bytes_out, bytes);
614 _HA_ATOMIC_ADD(&s->be->be_counters.bytes_out, bytes);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100615
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100616 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100617 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.bytes_out, bytes);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200618
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200619 if (sess->listener && sess->listener->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100620 _HA_ATOMIC_ADD(&sess->listener->counters->bytes_out, bytes);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200621
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100622 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200623 struct stkctr *stkctr = &s->stkctr[i];
624
Emeric Brun819fc6f2017-06-13 19:37:32 +0200625 ts = stkctr_entry(stkctr);
626 if (!ts) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200627 stkctr = &sess->stkctr[i];
Emeric Brun819fc6f2017-06-13 19:37:32 +0200628 ts = stkctr_entry(stkctr);
629 if (!ts)
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200630 continue;
631 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200632
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100633 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +0200634 ptr1 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_CNT);
Emeric Brun57056f02015-06-15 18:29:57 +0200635 if (ptr1)
636 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200637
Emeric Brun819fc6f2017-06-13 19:37:32 +0200638 ptr2 = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_BYTES_OUT_RATE);
Emeric Brun57056f02015-06-15 18:29:57 +0200639 if (ptr2)
640 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200641 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100642 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun57056f02015-06-15 18:29:57 +0200643
644 /* If data was modified, we need to touch to re-schedule sync */
645 if (ptr1 || ptr2)
Emeric Brun819fc6f2017-06-13 19:37:32 +0200646 stktable_touch_local(stkctr->table, stkctr_entry(stkctr), 0);
Willy Tarreau30e71012007-11-26 20:15:35 +0100647 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100648 }
649}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200650
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100651/* This function is called with (si->state == SI_ST_CON) meaning that a
652 * connection was attempted and that the file descriptor is already allocated.
653 * We must check for establishment, error and abort. Possible output states
654 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
655 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200656 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100657 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200658static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100659{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100660 struct stream_interface *si = &s->si[1];
661 struct channel *req = &s->req;
662 struct channel *rep = &s->res;
Olivier Houchard14547b22018-11-29 18:01:46 +0100663 struct conn_stream *srv_cs = objt_cs(si->end);
Willy Tarreaubf66bd12019-01-23 15:15:09 +0100664 struct connection *conn = srv_cs ? srv_cs->conn : objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100665
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100666 /* If we got an error, or if nothing happened and the connection timed
667 * out, we must give up. The CER state handler will take care of retry
668 * attempts and error reports.
669 */
670 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800671 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100672 /* Some data were sent past the connection establishment,
673 * so we need to pretend we're established to log correctly
674 * and let later states handle the failure.
675 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100676 si->state = SI_ST_EST;
677 si->err_type = SI_ET_DATA_ERR;
Olivier Houchardf4bda992019-05-03 22:21:24 +0200678 /* Don't add CF_WRITE_ERROR if we're here because
679 * early data were rejected by the server, or
680 * http_wait_for_response() will never be called
681 * to send a 425.
682 */
683 if (conn->err_code != CO_ER_SSL_EARLY_FAILED)
684 req->flags |= CF_WRITE_ERROR;
Willy Tarreau28e581b2019-01-31 18:58:06 +0100685 rep->flags |= CF_READ_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100686 return 1;
687 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100688 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100689 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100690
Willy Tarreaubf66bd12019-01-23 15:15:09 +0100691 if (!(s->flags & SF_SRV_REUSED) && conn) {
Olivier Houchard14547b22018-11-29 18:01:46 +0100692 conn_stop_tracking(conn);
693 conn_full_close(conn);
Olivier Houchard14547b22018-11-29 18:01:46 +0100694 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100695
696 if (si->err_type)
697 return 0;
698
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100699 if (si->flags & SI_FL_ERR)
700 si->err_type = SI_ET_CONN_ERR;
701 else
702 si->err_type = SI_ET_CONN_TO;
703 return 0;
704 }
705
706 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800707 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100708 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200709 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
Willy Tarreauede3d882018-10-24 17:17:56 +0200710 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Christopher Faulet769d0e92019-03-22 14:23:18 +0100711 (s->be->options & PR_O_ABRT_CLOSE))))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100712 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200713 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100714 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100715 if (s->srv_error)
716 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100717 return 1;
718 }
719
Christopher Faulet7a3367c2019-05-09 11:46:52 +0200720 /* If the request channel is waiting for the connect(), we mark the read
721 * side as attached on the response channel and we wake up it once. So
722 * it will have a chance to forward data now.
723 */
724 if (req->flags & CF_WAKE_CONNECT) {
725 rep->flags |= CF_READ_ATTACHED;
726 req->flags |= CF_WAKE_ONCE;
727 req->flags &= ~CF_WAKE_CONNECT;
728 }
729
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100730 /* we need to wait a bit more if there was no activity either */
Christopher Faulet3b88b8d2018-10-26 17:36:03 +0200731 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100732 return 1;
733
734 /* OK, this means that a connection succeeded. The caller will be
735 * responsible for handling the transition from CON to EST.
736 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100737 si->state = SI_ST_EST;
738 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100739 return 1;
740}
741
742/* This function is called with (si->state == SI_ST_CER) meaning that a
743 * previous connection attempt has failed and that the file descriptor
744 * has already been released. Possible causes include asynchronous error
745 * notification and time out. Possible output states are SI_ST_CLO when
746 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
747 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
748 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
749 * marked as in error state. It returns 0.
750 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200751static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100752{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100753 struct stream_interface *si = &s->si[1];
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200754 struct conn_stream *cs = objt_cs(si->end);
755 struct connection *conn = cs_conn(cs);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100756
Willy Tarreau87b09662015-04-03 00:22:06 +0200757 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100758 if (objt_server(s->target)) {
759 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100760
Willy Tarreaue7dff022015-04-03 01:14:29 +0200761 if (s->flags & SF_CURR_SESS) {
762 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100763 _HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100764 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200765
766 if ((si->flags & SI_FL_ERR) &&
767 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
768 /* We tried to connect to a server which is configured
769 * with "verify required" and which doesn't have the
770 * "verifyhost" directive. The server presented a wrong
771 * certificate (a certificate for an unexpected name),
772 * which implies that we have used SNI in the handshake,
773 * and that the server doesn't have the associated cert
774 * and presented a default one.
775 *
776 * This is a serious enough issue not to retry. It's
777 * especially important because this wrong name might
778 * either be the result of a configuration error, and
779 * retrying will only hammer the server, or is caused
780 * by the use of a wrong SNI value, most likely
781 * provided by the client and we don't want to let the
782 * client provoke retries.
783 */
784 si->conn_retries = 0;
785 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100786 }
787
788 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200789 si->conn_retries--;
Olivier Houcharda254a372019-04-05 15:30:12 +0200790 if (si->conn_retries < 0 || !(s->be->retry_type & PR_RE_CONN_FAILED)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100791 if (!si->err_type) {
792 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100793 }
794
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100795 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100796 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_conns, 1);
797 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100798 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100799 if (may_dequeue_tasks(objt_server(s->target), s->be))
800 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100801
802 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200803 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100804 s->req.flags |= CF_WRITE_ERROR;
805 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100806
807 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100808 if (s->srv_error)
809 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100810 return 0;
811 }
812
813 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700814 * retry on another server. By default this redispatch occurs on the
815 * last retry, but if configured we allow redispatches to occur on
816 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200817 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100818 * bit to ignore any persistence cookie. We won't count a retry nor a
819 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200820 * If the connection is not persistent, the balancing algorithm is not
821 * determinist (round robin) and there is more than one active server,
822 * we accept to perform an immediate redispatch without waiting since
823 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100824 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200825 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700826 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200827 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100828 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700829 ((s->be->conn_retries - si->conn_retries) %
830 s->be->redispatch_after == 0)) ||
831 ((s->be->redispatch_after < 0) &&
832 ((s->be->conn_retries - si->conn_retries) %
833 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200834 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700835 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100836 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100837 if (may_dequeue_tasks(objt_server(s->target), s->be))
838 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100839
Willy Tarreaue7dff022015-04-03 01:14:29 +0200840 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100841 si->state = SI_ST_REQ;
842 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100843 if (objt_server(s->target))
Olivier Houcharddc6111e2019-03-08 18:54:51 +0100844 _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.retries, 1);
845 _HA_ATOMIC_ADD(&s->be->be_counters.retries, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100846 si->state = SI_ST_ASS;
847 }
848
849 if (si->flags & SI_FL_ERR) {
850 /* The error was an asynchronous connection error, and we will
851 * likely have to retry connecting to the same server, most
852 * likely leading to the same result. To avoid this, we wait
Willy Tarreauf7a259d2019-01-23 16:29:53 +0100853 * MIN(one second, connect timeout) before retrying. We don't
854 * do it when the failure happened on a reused connection
855 * though.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100856 */
857
Willy Tarreaub0290662014-06-13 17:04:44 +0200858 int delay = 1000;
859
860 if (s->be->timeout.connect && s->be->timeout.connect < delay)
861 delay = s->be->timeout.connect;
862
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100863 if (!si->err_type)
864 si->err_type = SI_ET_CONN_ERR;
865
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200866 /* only wait when we're retrying on the same server */
Willy Tarreauf7a259d2019-01-23 16:29:53 +0100867 if ((si->state == SI_ST_ASS ||
868 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
869 (s->be->srv_act <= 1)) && !(s->flags & SF_SRV_REUSED)) {
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200870 si->state = SI_ST_TAR;
871 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
872 }
Olivier Houchard39cc0202019-04-09 19:12:51 +0200873 si->flags &= ~SI_FL_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100874 return 0;
875 }
876 return 0;
877}
878
879/*
880 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200881 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200882 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Olivier Houchardaacc4052019-05-21 17:43:50 +0200883 * Note that it will switch the interface to SI_ST_DIS if we already have
884 * the CF_SHUTR flag, it means we were able to forward the request, and
885 * receive the response, before process_stream() had the opportunity to
886 * make the switch from SI_ST_CON to SI_ST_EST. When that happens, we want
887 * to go through sess_establish() anyway, to make sure the analysers run.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100888 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200889static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100890{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100891 struct stream_interface *si = &s->si[1];
892 struct channel *req = &s->req;
893 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100894
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100895 /* First, centralize the timers information */
896 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
897 si->exp = TICK_ETERNITY;
898
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100899 if (objt_server(s->target))
900 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100901
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100902 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100903 /* if the user wants to log as soon as possible, without counting
904 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200905 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau66425e32018-07-25 06:55:12 +0200906 /* note: no pend_pos here, session is established */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100907 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100908 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100909 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100910 }
911 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100912 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100913 }
914
Willy Tarreau0007d0a2018-12-11 18:01:38 +0100915 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100916
Willy Tarreau0007d0a2018-12-11 18:01:38 +0100917 /* Be sure to filter response headers if the backend is an HTTP proxy
918 * and if there are filters attached to the stream. */
919 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
920 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +0100921
Willy Tarreau8bb2ffb2018-11-14 17:54:13 +0100922 si_rx_endp_more(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200923 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200924 if (objt_cs(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200925 /* real connections have timeouts */
926 req->wto = s->be->timeout.server;
927 rep->rto = s->be->timeout.server;
Olivier Houchard47e9a1a2018-11-07 17:55:19 +0100928 /* The connection is now established, try to read data from the
929 * underlying layer, and subscribe to recv events. We use a
930 * delayed recv here to give a chance to the data to flow back
931 * by the time we process other tasks.
932 */
933 si_chk_rcv(si);
Willy Tarreaud04e8582010-05-31 12:31:35 +0200934 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100935 req->wex = TICK_ETERNITY;
Olivier Houchardaacc4052019-05-21 17:43:50 +0200936 /* If we managed to get the whole response, switch to SI_ST_DIS now. */
937 if (rep->flags & CF_SHUTR)
938 si->state = SI_ST_DIS;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100939}
940
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700941/* Check if the connection request is in such a state that it can be aborted. */
942static int check_req_may_abort(struct channel *req, struct stream *s)
943{
944 return ((req->flags & (CF_READ_ERROR)) ||
Willy Tarreaud651ba12018-01-12 10:42:12 +0100945 ((req->flags & (CF_SHUTW_NOW|CF_SHUTW)) && /* empty and client aborted */
Christopher Faulet769d0e92019-03-22 14:23:18 +0100946 (channel_is_empty(req) || (s->be->options & PR_O_ABRT_CLOSE))));
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700947}
948
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100949/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
950 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100951 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
952 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
953 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100954 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200955static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100956{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100957 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100958 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100959 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100960
Christopher Faulet45073512018-07-20 10:16:29 +0200961 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 +0100962 now_ms, __FUNCTION__,
963 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400964 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100965 req->rex, s->res.wex,
966 req->flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200967 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 +0100968
969 if (si->state == SI_ST_ASS) {
970 /* Server assigned to connection request, we have to try to connect now */
971 int conn_err;
972
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700973 /* Before we try to initiate the connection, see if the
974 * request may be aborted instead.
975 */
976 if (check_req_may_abort(req, s)) {
977 si->err_type |= SI_ET_CONN_ABRT;
978 goto abort_connection;
979 }
980
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100981 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100982 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100983
Willy Tarreaue7dff022015-04-03 01:14:29 +0200984 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100985 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100986 if (srv)
987 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500988 if (srv)
989 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100990 return;
991 }
992
993 /* We have received a synchronous error. We might have to
994 * abort, retry immediately or redispatch.
995 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200996 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100997 if (!si->err_type) {
998 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100999 }
1000
Willy Tarreau827aee92011-03-10 16:55:02 +01001001 if (srv)
1002 srv_inc_sess_ctr(srv);
1003 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -05001004 srv_set_sess_last(srv);
1005 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001006 _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
1007 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001008
Willy Tarreau87b09662015-04-03 00:22:06 +02001009 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +01001010 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001011 if (may_dequeue_tasks(srv, s->be))
1012 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001013
1014 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001015 si_shutr(si);
1016 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001017 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001018
1019 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1020
Willy Tarreau66425e32018-07-25 06:55:12 +02001021 /* we may need to know the position in the queue for logging */
1022 pendconn_cond_unlink(s->pend_pos);
1023
Willy Tarreau87b09662015-04-03 00:22:06 +02001024 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001025 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001026 if (s->srv_error)
1027 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001028 return;
1029 }
1030
1031 /* We are facing a retryable error, but we don't want to run a
1032 * turn-around now, as the problem is likely a source port
1033 * allocation problem, so we want to retry now.
1034 */
1035 si->state = SI_ST_CER;
1036 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001037 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001038 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
1039 return;
1040 }
1041 else if (si->state == SI_ST_QUE) {
1042 /* connection request was queued, check for any update */
Christopher Faulet5cd4bbd2018-03-14 16:18:06 +01001043 if (!pendconn_dequeue(s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001044 /* The connection is not in the queue anymore. Either
1045 * we have a server connection slot available and we
1046 * go directly to the assigned state, or we need to
1047 * load-balance first and go to the INI state.
1048 */
1049 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001050 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001051 si->state = SI_ST_REQ;
1052 else {
1053 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1054 si->state = SI_ST_ASS;
1055 }
1056 return;
1057 }
1058
1059 /* Connection request still in queue... */
1060 if (si->flags & SI_FL_EXP) {
1061 /* ... and timeout expired */
1062 si->exp = TICK_ETERNITY;
1063 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001064
1065 /* we may need to know the position in the queue for logging */
1066 pendconn_cond_unlink(s->pend_pos);
1067
Willy Tarreau827aee92011-03-10 16:55:02 +01001068 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001069 _HA_ATOMIC_ADD(&srv->counters.failed_conns, 1);
1070 _HA_ATOMIC_ADD(&s->be->be_counters.failed_conns, 1);
Willy Tarreau73b013b2012-05-21 16:31:45 +02001071 si_shutr(si);
1072 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001073 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001074 if (!si->err_type)
1075 si->err_type = SI_ET_QUEUE_TO;
1076 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001077 if (s->srv_error)
1078 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001079 return;
1080 }
1081
1082 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001083 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001084 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau66425e32018-07-25 06:55:12 +02001085
1086 /* we may need to know the position in the queue for logging */
1087 pendconn_cond_unlink(s->pend_pos);
1088
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001089 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001090 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001091 }
1092
1093 /* Nothing changed */
1094 return;
1095 }
1096 else if (si->state == SI_ST_TAR) {
1097 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001098 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001099 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001100 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001101 }
1102
1103 if (!(si->flags & SI_FL_EXP))
1104 return; /* still in turn-around */
1105
Olivier Houchard86dcad62019-04-09 19:17:41 +02001106 si->flags &= ~SI_FL_EXP;
1107
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001108 si->exp = TICK_ETERNITY;
1109
Willy Tarreau87b09662015-04-03 00:22:06 +02001110 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001111 * marked "assigned".
1112 * FIXME: Should we force a redispatch attempt when the server is down ?
1113 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001114 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001115 si->state = SI_ST_ASS;
1116 else
1117 si->state = SI_ST_REQ;
1118 return;
1119 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -07001120 return;
1121
1122abort_connection:
1123 /* give up */
1124 si->exp = TICK_ETERNITY;
1125 si_shutr(si);
1126 si_shutw(si);
1127 si->state = SI_ST_CLO;
1128 if (s->srv_error)
1129 s->srv_error(s, si);
1130 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001131}
1132
Willy Tarreau87b09662015-04-03 00:22:06 +02001133/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +09001134 * also counts a failed request if the server state has not reached the request
1135 * stage.
1136 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001137static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +09001138{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001139 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +09001140 if (s->si[1].state < SI_ST_REQ) {
1141
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001142 _HA_ATOMIC_ADD(&strm_fe(s)->fe_counters.failed_req, 1);
Willy Tarreau2c1068c2015-09-23 12:21:21 +02001143 if (strm_li(s) && strm_li(s)->counters)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001144 _HA_ATOMIC_ADD(&strm_li(s)->counters->failed_req, 1);
Simon Hormandec5be42011-06-08 09:19:07 +09001145
Willy Tarreaue7dff022015-04-03 01:14:29 +02001146 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +09001147 }
1148 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001149 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +09001150 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001151 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +09001152 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +02001153 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001154 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001155 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001156 }
1157}
1158
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001159/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001160 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1161 * a real connection to a server, indicating that a server has been assigned,
1162 * or SI_ST_EST for a successful connection to an applet. It may also return
1163 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001164 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001165static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001166{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001167 struct stream_interface *si = &s->si[1];
1168
Christopher Faulet45073512018-07-20 10:16:29 +02001169 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 +01001170 now_ms, __FUNCTION__,
1171 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001172 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001173 s->req.rex, s->res.wex,
1174 s->req.flags, s->res.flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001175 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 +01001176
1177 if (si->state != SI_ST_REQ)
1178 return;
1179
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001180 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1181 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001182 struct appctx *appctx = objt_appctx(si->end);
1183
1184 if (!appctx || appctx->applet != __objt_applet(s->target))
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001185 appctx = si_register_handler(si, objt_applet(s->target));
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001186
1187 if (!appctx) {
1188 /* No more memory, let's immediately abort. Force the
1189 * error code to ignore the ERR_LOCAL which is not a
1190 * real error.
1191 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001192 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001193
1194 si_shutr(si);
1195 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001196 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001197 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001198 si->state = SI_ST_CLO;
1199 if (s->srv_error)
1200 s->srv_error(s, si);
1201 return;
1202 }
1203
Christopher Faulet7a3367c2019-05-09 11:46:52 +02001204 /* For applets, there is no connection establishment, but if the
1205 * request channel is waiting for it, we mark the read side as
1206 * attached on the response channel and we wake up it once. So
1207 * it will have a chance to forward data now.
1208 */
1209 if (s->req.flags & CF_WAKE_CONNECT) {
1210 s->res.flags |= CF_READ_ATTACHED;
1211 s->req.flags |= CF_WAKE_ONCE;
1212 s->req.flags &= ~CF_WAKE_CONNECT;
1213 }
1214
Willy Tarreauee8269e2017-11-23 17:34:29 +01001215 if (tv_iszero(&s->logs.tv_request))
1216 s->logs.tv_request = now;
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001217 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001218 si->state = SI_ST_EST;
1219 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001220 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001221 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001222 return;
1223 }
1224
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001225 /* Try to assign a server */
1226 if (srv_redispatch_connect(s) != 0) {
1227 /* We did not get a server. Either we queued the
1228 * connection request, or we encountered an error.
1229 */
1230 if (si->state == SI_ST_QUE)
1231 return;
1232
1233 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001234 si_shutr(si);
1235 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001236 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001237 if (!si->err_type)
1238 si->err_type = SI_ET_CONN_OTHER;
1239 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001240 if (s->srv_error)
1241 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001242 return;
1243 }
1244
1245 /* The server is assigned */
1246 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1247 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001248 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001249}
1250
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001251/* This function parses the use-service action ruleset. It executes
1252 * the associated ACL and set an applet as a stream or txn final node.
1253 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1254 * consistent state. It returns ACT_RET_STOP in succes case because
1255 * use-service must be a terminal action. Returns ACT_RET_YIELD
1256 * if the initialisation function require more data.
1257 */
1258enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1259 struct session *sess, struct stream *s, int flags)
1260
1261{
1262 struct appctx *appctx;
1263
1264 /* Initialises the applet if it is required. */
1265 if (flags & ACT_FLAG_FIRST) {
1266 /* Register applet. this function schedules the applet. */
1267 s->target = &rule->applet.obj_type;
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001268 if (unlikely(!si_register_handler(&s->si[1], objt_applet(s->target))))
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001269 return ACT_RET_ERR;
1270
1271 /* Initialise the context. */
1272 appctx = si_appctx(&s->si[1]);
1273 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1274 appctx->rule = rule;
1275 }
1276 else
1277 appctx = si_appctx(&s->si[1]);
1278
1279 /* Stops the applet sheduling, in case of the init function miss
1280 * some data.
1281 */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001282 si_stop_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001283
1284 /* Call initialisation. */
1285 if (rule->applet.init)
1286 switch (rule->applet.init(appctx, px, s)) {
1287 case 0: return ACT_RET_ERR;
1288 case 1: break;
1289 default: return ACT_RET_YIELD;
1290 }
1291
Christopher Faulet2571bc62019-03-01 11:44:26 +01001292 if (rule->from != ACT_F_HTTP_REQ) {
1293 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
1294 _HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
1295
1296 /* The flag SF_ASSIGNED prevent from server assignment. */
1297 s->flags |= SF_ASSIGNED;
1298 }
1299
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001300 /* Now we can schedule the applet. */
Willy Tarreau0cd3bd62018-11-06 18:46:37 +01001301 si_cant_get(&s->si[1]);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001302 appctx_wakeup(appctx);
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001303 return ACT_RET_STOP;
1304}
1305
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001306/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001307 * if appropriate. The default_backend rule is also considered, then the
1308 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001309 * It returns 1 if the processing can continue on next analysers, or zero if it
1310 * either needs more data or wants to immediately abort the request.
1311 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001312static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001313{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001314 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001315 struct session *sess = s->sess;
1316 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001317
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001318 req->analysers &= ~an_bit;
1319 req->analyse_exp = TICK_ETERNITY;
1320
Christopher Faulet45073512018-07-20 10:16:29 +02001321 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 +02001322 now_ms, __FUNCTION__,
1323 s,
1324 req,
1325 req->rex, req->wex,
1326 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001327 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001328 req->analysers);
1329
1330 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001331 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001332 struct switching_rule *rule;
1333
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001334 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001335 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001336
Willy Tarreauf51658d2014-04-23 01:21:56 +02001337 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001338 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001339 ret = acl_pass(ret);
1340 if (rule->cond->pol == ACL_COND_UNLESS)
1341 ret = !ret;
1342 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001343
1344 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001345 /* If the backend name is dynamic, try to resolve the name.
1346 * If we can't resolve the name, or if any error occurs, break
1347 * the loop and fallback to the default backend.
1348 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001349 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001350
1351 if (rule->dynamic) {
Willy Tarreau83061a82018-07-13 11:56:34 +02001352 struct buffer *tmp;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001353
1354 tmp = alloc_trash_chunk();
1355 if (!tmp)
1356 goto sw_failed;
1357
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001358 if (build_logline(s, tmp->area, tmp->size, &rule->be.expr))
1359 backend = proxy_be_by_name(tmp->area);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001360
1361 free_trash_chunk(tmp);
1362 tmp = NULL;
1363
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001364 if (!backend)
1365 break;
1366 }
1367 else
1368 backend = rule->be.backend;
1369
Willy Tarreau87b09662015-04-03 00:22:06 +02001370 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001371 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001372 break;
1373 }
1374 }
1375
1376 /* To ensure correct connection accounting on the backend, we
1377 * have to assign one if it was not set (eg: a listen). This
1378 * measure also takes care of correctly setting the default
1379 * backend if any.
1380 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001381 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001382 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001383 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001384 }
1385
Willy Tarreaufb356202010-08-03 14:02:05 +02001386 /* 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 +02001387 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001388 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1389 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001390 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001391 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001392
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001393 /* 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 +02001394 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001395 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001396 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001397 int ret = 1;
1398
1399 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001400 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 +01001401 ret = acl_pass(ret);
1402 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1403 ret = !ret;
1404 }
1405
1406 if (ret) {
1407 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001408 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001409 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001410 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001411 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001412 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001413 break;
1414 }
1415 }
1416
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001417 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001418
1419 sw_failed:
1420 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001421 channel_abort(&s->req);
1422 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001423
Willy Tarreaue7dff022015-04-03 01:14:29 +02001424 if (!(s->flags & SF_ERR_MASK))
1425 s->flags |= SF_ERR_RESOURCE;
1426 if (!(s->flags & SF_FINST_MASK))
1427 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001428
Willy Tarreaueee5b512015-04-03 23:46:31 +02001429 if (s->txn)
1430 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001431 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001432 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001433 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001434}
1435
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001436/* This stream analyser works on a request. It applies all use-server rules on
1437 * it then returns 1. The data must already be present in the buffer otherwise
1438 * they won't match. It always returns 1.
1439 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001440static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001441{
1442 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001443 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001444 struct server_rule *rule;
1445
Christopher Faulet45073512018-07-20 10:16:29 +02001446 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 +02001447 now_ms, __FUNCTION__,
1448 s,
1449 req,
1450 req->rex, req->wex,
1451 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001452 c_data(req),
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001453 req->analysers);
1454
Willy Tarreaue7dff022015-04-03 01:14:29 +02001455 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001456 list_for_each_entry(rule, &px->server_rules, list) {
1457 int ret;
1458
Willy Tarreau192252e2015-04-04 01:47:55 +02001459 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001460 ret = acl_pass(ret);
1461 if (rule->cond->pol == ACL_COND_UNLESS)
1462 ret = !ret;
1463
1464 if (ret) {
1465 struct server *srv = rule->srv.ptr;
1466
Emeric Brun52a91d32017-08-31 14:41:55 +02001467 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001468 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001469 (s->flags & SF_FORCE_PRST)) {
1470 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001471 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001472 break;
1473 }
1474 /* if the server is not UP, let's go on with next rules
1475 * just in case another one is suited.
1476 */
1477 }
1478 }
1479 }
1480
1481 req->analysers &= ~an_bit;
1482 req->analyse_exp = TICK_ETERNITY;
1483 return 1;
1484}
1485
Emeric Brun1d33b292010-01-04 15:47:17 +01001486/* This stream analyser works on a request. It applies all sticking rules on
1487 * it then returns 1. The data must already be present in the buffer otherwise
1488 * they won't match. It always returns 1.
1489 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001490static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001491{
1492 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001493 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001494 struct sticking_rule *rule;
1495
Christopher Faulet45073512018-07-20 10:16:29 +02001496 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 +01001497 now_ms, __FUNCTION__,
1498 s,
1499 req,
1500 req->rex, req->wex,
1501 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001502 ci_data(req),
Emeric Brun1d33b292010-01-04 15:47:17 +01001503 req->analysers);
1504
1505 list_for_each_entry(rule, &px->sticking_rules, list) {
1506 int ret = 1 ;
1507 int i;
1508
Willy Tarreau9667a802013-12-09 12:52:13 +01001509 /* Only the first stick store-request of each table is applied
1510 * and other ones are ignored. The purpose is to allow complex
1511 * configurations which look for multiple entries by decreasing
1512 * order of precision and to stop at the first which matches.
1513 * An example could be a store of the IP address from an HTTP
1514 * header first, then from the source if not found.
1515 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001516 for (i = 0; i < s->store_count; i++) {
1517 if (rule->table.t == s->store[i].table)
1518 break;
1519 }
1520
1521 if (i != s->store_count)
1522 continue;
1523
1524 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001525 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001526 ret = acl_pass(ret);
1527 if (rule->cond->pol == ACL_COND_UNLESS)
1528 ret = !ret;
1529 }
1530
1531 if (ret) {
1532 struct stktable_key *key;
1533
Willy Tarreau192252e2015-04-04 01:47:55 +02001534 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 +01001535 if (!key)
1536 continue;
1537
1538 if (rule->flags & STK_IS_MATCH) {
1539 struct stksess *ts;
1540
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001541 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001542 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001543 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001544 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001545
1546 /* srv found in table */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001547 HA_RWLOCK_RDLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001548 ptr = __stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau13c29de2010-06-06 16:40:39 +02001549 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001550 HA_RWLOCK_RDUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun1d33b292010-01-04 15:47:17 +01001551 if (node) {
1552 struct server *srv;
1553
1554 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001555 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001556 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001557 (s->flags & SF_FORCE_PRST)) {
1558 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001559 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001560 }
1561 }
1562 }
Emeric Brun819fc6f2017-06-13 19:37:32 +02001563 stktable_touch_local(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001564 }
1565 }
1566 if (rule->flags & STK_IS_STORE) {
1567 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1568 struct stksess *ts;
1569
1570 ts = stksess_new(rule->table.t, key);
1571 if (ts) {
1572 s->store[s->store_count].table = rule->table.t;
1573 s->store[s->store_count++].ts = ts;
1574 }
1575 }
1576 }
1577 }
1578 }
1579
1580 req->analysers &= ~an_bit;
1581 req->analyse_exp = TICK_ETERNITY;
1582 return 1;
1583}
1584
1585/* This stream analyser works on a response. It applies all store rules on it
1586 * then returns 1. The data must already be present in the buffer otherwise
1587 * they won't match. It always returns 1.
1588 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001589static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001590{
1591 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001592 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001593 struct sticking_rule *rule;
1594 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001595 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001596
Christopher Faulet45073512018-07-20 10:16:29 +02001597 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 +01001598 now_ms, __FUNCTION__,
1599 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001600 rep,
1601 rep->rex, rep->wex,
1602 rep->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001603 ci_data(rep),
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001604 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001605
1606 list_for_each_entry(rule, &px->storersp_rules, list) {
1607 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001608
Willy Tarreau9667a802013-12-09 12:52:13 +01001609 /* Only the first stick store-response of each table is applied
1610 * and other ones are ignored. The purpose is to allow complex
1611 * configurations which look for multiple entries by decreasing
1612 * order of precision and to stop at the first which matches.
1613 * An example could be a store of a set-cookie value, with a
1614 * fallback to a parameter found in a 302 redirect.
1615 *
1616 * The store-response rules are not allowed to override the
1617 * store-request rules for the same table, but they may coexist.
1618 * Thus we can have up to one store-request entry and one store-
1619 * response entry for the same table at any time.
1620 */
1621 for (i = nbreq; i < s->store_count; i++) {
1622 if (rule->table.t == s->store[i].table)
1623 break;
1624 }
1625
1626 /* skip existing entries for this table */
1627 if (i < s->store_count)
1628 continue;
1629
Emeric Brun1d33b292010-01-04 15:47:17 +01001630 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001631 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001632 ret = acl_pass(ret);
1633 if (rule->cond->pol == ACL_COND_UNLESS)
1634 ret = !ret;
1635 }
1636
1637 if (ret) {
1638 struct stktable_key *key;
1639
Willy Tarreau192252e2015-04-04 01:47:55 +02001640 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 +01001641 if (!key)
1642 continue;
1643
Willy Tarreau37e340c2013-12-06 23:05:21 +01001644 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001645 struct stksess *ts;
1646
1647 ts = stksess_new(rule->table.t, key);
1648 if (ts) {
1649 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001650 s->store[s->store_count++].ts = ts;
1651 }
1652 }
1653 }
1654 }
1655
1656 /* process store request and store response */
1657 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001658 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001659 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001660
Willy Tarreauc93cd162014-05-13 15:54:22 +02001661 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001662 stksess_free(s->store[i].table, s->store[i].ts);
1663 s->store[i].ts = NULL;
1664 continue;
1665 }
1666
Emeric Brun819fc6f2017-06-13 19:37:32 +02001667 ts = stktable_set_entry(s->store[i].table, s->store[i].ts);
1668 if (ts != s->store[i].ts) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001669 /* the entry already existed, we can free ours */
Emeric Brun1d33b292010-01-04 15:47:17 +01001670 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001671 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001672 s->store[i].ts = NULL;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001673
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001674 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreaub8d42d02018-09-20 11:11:15 +02001675 ptr = __stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
1676 stktable_data_cast(ptr, server_id) = __objt_server(s->target)->puid;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001677 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001678 stktable_touch_local(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001679 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001680 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001681
1682 rep->analysers &= ~an_bit;
1683 rep->analyse_exp = TICK_ETERNITY;
1684 return 1;
1685}
1686
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001687/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001688 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001689 */
1690#define UPDATE_ANALYSERS(real, list, back, flag) { \
1691 list = (((list) & ~(flag)) | ~(back)) & (real); \
1692 back = real; \
1693 if (!(list)) \
1694 break; \
1695 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1696 continue; \
1697}
1698
Christopher Fauleta9215b72016-05-11 17:06:28 +02001699/* These 2 following macros call an analayzer for the specified channel if the
1700 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001701 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001702 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001703 * AN_REQ/RES_HTTP_XFER_BODY) */
1704#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1705 { \
1706 if ((list) & (flag)) { \
1707 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001708 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001709 break; \
1710 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1711 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001712 if (!flt_post_analyze((strm), (chn), (flag))) \
1713 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001714 } \
1715 else { \
1716 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1717 break; \
1718 } \
1719 UPDATE_ANALYSERS((chn)->analysers, (list), \
1720 (back), (flag)); \
1721 } \
1722 }
1723
1724#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1725 { \
1726 if ((list) & (flag)) { \
1727 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1728 break; \
1729 UPDATE_ANALYSERS((chn)->analysers, (list), \
1730 (back), (flag)); \
1731 } \
1732 }
1733
Willy Tarreau87b09662015-04-03 00:22:06 +02001734/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001735 * then puts it back to the wait queue in a clean state, or cleans up its
1736 * resources if it must be deleted. Returns in <next> the date the task wants
1737 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1738 * nothing too many times, the request and response buffers flags are monitored
1739 * and each function is called only if at least another function has changed at
1740 * least one flag it is interested in.
1741 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001742struct task *process_stream(struct task *t, void *context, unsigned short state)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001743{
Willy Tarreau827aee92011-03-10 16:55:02 +01001744 struct server *srv;
Olivier Houchard9f6af332018-05-25 14:04:04 +02001745 struct stream *s = context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001746 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001747 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001748 unsigned int rq_prod_last, rq_cons_last;
1749 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001750 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001751 struct channel *req, *res;
1752 struct stream_interface *si_f, *si_b;
Willy Tarreau3d07a162019-04-25 19:15:20 +02001753 unsigned int rate;
Willy Tarreau4ad574f2019-04-25 19:48:10 +02001754 uint64_t cpu_time_before, cpu_time_after;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001755
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01001756 activity[tid].stream++;
1757
Willy Tarreau8f128b42014-11-28 15:07:47 +01001758 req = &s->req;
1759 res = &s->res;
1760
1761 si_f = &s->si[0];
1762 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001763
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001764 /* First, attempt to receive pending data from I/O layers */
Willy Tarreauade64782018-11-17 19:51:07 +01001765 si_sync_recv(si_f);
1766 si_sync_recv(si_b);
Willy Tarreau0f8d3ab2018-10-25 10:42:39 +02001767
Willy Tarreau4ad574f2019-04-25 19:48:10 +02001768 /* measure only the analysers' time */
1769 cpu_time_before = 0;
1770 if (task_profiling_mask & tid_bit)
1771 cpu_time_before = now_cpu_time();
1772
Olivier Houchard53216e72018-10-10 15:46:36 +02001773redo:
Willy Tarreau3d07a162019-04-25 19:15:20 +02001774 rate = update_freq_ctr(&s->call_rate, 1);
1775 if (rate >= 100000 && s->call_rate.prev_ctr) { // make sure to wait at least a full second
1776 stream_dump_and_crash(&s->obj_type, read_freq_ctr(&s->call_rate));
1777 }
Olivier Houchardc2aa7112018-09-11 18:27:21 +02001778
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001779 //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 +01001780 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001781
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001782 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001783 if (s->txn)
1784 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001785
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001786 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001787 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1788 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001789
1790 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001791 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1792 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001793
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001794 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001795 si_f->flags |= SI_FL_DONT_WAKE;
1796 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001797
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001798 /* update pending events */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001799 s->pending_events |= (state & TASK_WOKEN_ANY);
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001800
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001801 /* 1a: Check for low level timeouts if needed. We just set a flag on
1802 * stream interfaces when their timeouts have expired.
1803 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001804 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001805 si_check_timeouts(si_f);
1806 si_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001807
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001808 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001809 * for future reads or writes. Note: this will also concern upper layers
1810 * but we do not touch any other flag. We must be careful and correctly
1811 * detect state changes when calling them.
1812 */
1813
Willy Tarreau8f128b42014-11-28 15:07:47 +01001814 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001815
Willy Tarreau8f128b42014-11-28 15:07:47 +01001816 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1817 si_b->flags |= SI_FL_NOLINGER;
1818 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001819 }
1820
Willy Tarreau8f128b42014-11-28 15:07:47 +01001821 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1822 if (si_f->flags & SI_FL_NOHALF)
1823 si_f->flags |= SI_FL_NOLINGER;
1824 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001825 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001826
Willy Tarreau8f128b42014-11-28 15:07:47 +01001827 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001828
Willy Tarreau8f128b42014-11-28 15:07:47 +01001829 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1830 si_f->flags |= SI_FL_NOLINGER;
1831 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001832 }
1833
Willy Tarreau8f128b42014-11-28 15:07:47 +01001834 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1835 if (si_b->flags & SI_FL_NOHALF)
1836 si_b->flags |= SI_FL_NOLINGER;
1837 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001838 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001839
Christopher Fauleta00d8172016-11-10 14:58:05 +01001840 if (HAS_FILTERS(s))
1841 flt_stream_check_timeouts(s);
1842
Willy Tarreau798f4322012-11-08 14:49:17 +01001843 /* Once in a while we're woken up because the task expires. But
1844 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001845 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001846 * timeout needs to be refreshed.
1847 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001848 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001849 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
Willy Tarreauede3d882018-10-24 17:17:56 +02001850 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001851 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001852 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001853 si_f->flags &= ~SI_FL_DONT_WAKE;
1854 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001855 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001856 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001857 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001858
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001859 /* below we may emit error messages so we have to ensure that we have
1860 * our buffers properly allocated.
1861 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001862 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001863 /* No buffer available, we've been subscribed to the list of
1864 * buffer waiters, let's wait for our turn.
1865 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001866 si_f->flags &= ~SI_FL_DONT_WAKE;
1867 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001868 goto update_exp_and_leave;
1869 }
1870
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001871 /* 1b: check for low-level errors reported at the stream interface.
1872 * First we check if it's a retryable error (in which case we don't
1873 * want to tell the buffer). Otherwise we report the error one level
1874 * upper by setting flags into the buffers. Note that the side towards
1875 * the client cannot have connect (hence retryable) errors. Also, the
1876 * connection setup code must be able to deal with any type of abort.
1877 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001878 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001879 if (unlikely(si_f->flags & SI_FL_ERR)) {
1880 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1881 si_shutr(si_f);
1882 si_shutw(si_f);
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001883 si_report_error(si_f);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001884 if (!(req->analysers) && !(res->analysers)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001885 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
1886 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001887 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001888 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001889 if (!(s->flags & SF_ERR_MASK))
1890 s->flags |= SF_ERR_CLICL;
1891 if (!(s->flags & SF_FINST_MASK))
1892 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001893 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001894 }
1895 }
1896
Willy Tarreau8f128b42014-11-28 15:07:47 +01001897 if (unlikely(si_b->flags & SI_FL_ERR)) {
1898 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1899 si_shutr(si_b);
1900 si_shutw(si_b);
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01001901 si_report_error(si_b);
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001902 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001903 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001904 _HA_ATOMIC_ADD(&srv->counters.failed_resp, 1);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001905 if (!(req->analysers) && !(res->analysers)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001906 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
1907 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01001908 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001909 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001910 if (!(s->flags & SF_ERR_MASK))
1911 s->flags |= SF_ERR_SRVCL;
1912 if (!(s->flags & SF_FINST_MASK))
1913 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001914 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001915 }
1916 /* note: maybe we should process connection errors here ? */
1917 }
1918
Willy Tarreau8f128b42014-11-28 15:07:47 +01001919 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001920 /* we were trying to establish a connection on the server side,
1921 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1922 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001923 if (unlikely(!sess_update_st_con_tcp(s)))
1924 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001925 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001926 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001927
1928 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1929 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1930 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1931 */
1932 }
1933
Willy Tarreau8f128b42014-11-28 15:07:47 +01001934 rq_prod_last = si_f->state;
1935 rq_cons_last = si_b->state;
1936 rp_cons_last = si_f->state;
1937 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001938
1939 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001940 /* Check for connection closure */
1941
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001942 DPRINTF(stderr,
Christopher Faulet45073512018-07-20 10:16:29 +02001943 "[%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 +01001944 now_ms, __FUNCTION__, __LINE__,
1945 t,
1946 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001947 req, res,
1948 req->rex, res->wex,
1949 req->flags, res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02001950 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 +01001951 si_f->err_type, si_b->err_type,
1952 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001953
1954 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001955 if (unlikely(si_f->state == SI_ST_DIS))
1956 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001957
1958 /* When a server-side connection is released, we have to count it and
1959 * check for pending connections on this server.
1960 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001961 if (unlikely(si_b->state == SI_ST_DIS)) {
1962 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001963 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001964 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001965 if (s->flags & SF_CURR_SESS) {
1966 s->flags &= ~SF_CURR_SESS;
Olivier Houcharddc6111e2019-03-08 18:54:51 +01001967 _HA_ATOMIC_SUB(&srv->cur_sess, 1);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001968 }
1969 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001970 if (may_dequeue_tasks(srv, s->be))
1971 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001972 }
1973 }
1974
1975 /*
1976 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1977 * at this point.
1978 */
1979
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001980 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001981 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001982 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1983 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01001984 (req->analysers && (req->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01001985 si_f->state != rq_prod_last ||
1986 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001987 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001988 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001989
Willy Tarreau8f128b42014-11-28 15:07:47 +01001990 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001991 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001992 unsigned int ana_list;
1993 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001994
Willy Tarreau90deb182010-01-07 00:20:41 +01001995 /* it's up to the analysers to stop new connections,
1996 * disable reading or closing. Note: if an analyser
1997 * disables any of these bits, it is responsible for
1998 * enabling them again when it disables itself, so
1999 * that other analysers are called in similar conditions.
2000 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002001 channel_auto_read(req);
2002 channel_auto_connect(req);
2003 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01002004
2005 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002006 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01002007 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002008 * the list when not needed. Any analyser may return 0
2009 * to break out of the loop, either because of missing
2010 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002011 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002012 * analyser, and we may loop again if other analysers
2013 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002014 *
2015 * We build a list of analysers to run. We evaluate all
2016 * of these analysers in the order of the lower bit to
2017 * the higher bit. This ordering is very important.
2018 * An analyser will often add/remove other analysers,
2019 * including itself. Any changes to itself have no effect
2020 * on the loop. If it removes any other analysers, we
2021 * want those analysers not to be called anymore during
2022 * this loop. If it adds an analyser that is located
2023 * after itself, we want it to be scheduled for being
2024 * processed during the loop. If it adds an analyser
2025 * which is located before it, we want it to switch to
2026 * it immediately, even if it has already been called
2027 * once but removed since.
2028 *
2029 * In order to achieve this, we compare the analyser
2030 * list after the call with a copy of it before the
2031 * call. The work list is fed with analyser bits that
2032 * appeared during the call. Then we compare previous
2033 * work list with the new one, and check the bits that
2034 * appeared. If the lowest of these bits is lower than
2035 * the current bit, it means we have enabled a previous
2036 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01002037 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002038
Willy Tarreau8f128b42014-11-28 15:07:47 +01002039 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002040 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002041 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002042 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002043 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
2044 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
2045 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
2046 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
2047 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002048 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002049 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
2050 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
2051 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
2052 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
2053 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
2054 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
2055 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002056 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002057 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002058 ANALYZE (s, req, pcli_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002059 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
2060 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002061 break;
2062 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002063 }
Willy Tarreau84455332009-03-15 22:34:05 +01002064
Willy Tarreau8f128b42014-11-28 15:07:47 +01002065 rq_prod_last = si_f->state;
2066 rq_cons_last = si_b->state;
2067 req->flags &= ~CF_WAKE_ONCE;
2068 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002069
Willy Tarreau8f128b42014-11-28 15:07:47 +01002070 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002071 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002072 }
2073
Willy Tarreau576507f2010-01-07 00:09:04 +01002074 /* we'll monitor the request analysers while parsing the response,
2075 * because some response analysers may indirectly enable new request
2076 * analysers (eg: HTTP keep-alive).
2077 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002078 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01002079
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002080 resync_response:
2081 /* Analyse response */
2082
Willy Tarreau8f128b42014-11-28 15:07:47 +01002083 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
2084 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau33982cb2017-11-20 15:37:13 +01002085 (res->analysers && (res->flags & CF_SHUTW)) ||
Willy Tarreau8f128b42014-11-28 15:07:47 +01002086 si_f->state != rp_cons_last ||
2087 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002088 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002089 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002090
Willy Tarreau8f128b42014-11-28 15:07:47 +01002091 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002092 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002093 unsigned int ana_list;
2094 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002095
Willy Tarreau90deb182010-01-07 00:20:41 +01002096 /* it's up to the analysers to stop disable reading or
2097 * closing. Note: if an analyser disables any of these
2098 * bits, it is responsible for enabling them again when
2099 * it disables itself, so that other analysers are called
2100 * in similar conditions.
2101 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002102 channel_auto_read(res);
2103 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002104
2105 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01002106 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002107 * to MSB. The analysers must remove themselves from
2108 * the list when not needed. Any analyser may return 0
2109 * to break out of the loop, either because of missing
2110 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02002111 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002112 * analyser, and we may loop again if other analysers
2113 * are added in the middle.
2114 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002115
Willy Tarreau8f128b42014-11-28 15:07:47 +01002116 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002117 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002118 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002119 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
2120 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002121 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
2122 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
2123 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
2124 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 +01002125 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02002126 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
William Lallemandcf62f7e2018-10-26 14:47:40 +02002127 ANALYZE (s, res, pcli_wait_for_response, ana_list, ana_back, AN_RES_WAIT_CLI);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002128 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
2129 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01002130 break;
2131 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002132 }
2133
Willy Tarreau8f128b42014-11-28 15:07:47 +01002134 rp_cons_last = si_f->state;
2135 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02002136 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002137 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002138
Willy Tarreau8f128b42014-11-28 15:07:47 +01002139 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002140 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002141 }
2142
Willy Tarreau576507f2010-01-07 00:09:04 +01002143 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002144 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01002145 goto resync_request;
2146
Willy Tarreau8f128b42014-11-28 15:07:47 +01002147 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002148 goto resync_request;
2149
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002150 /* FIXME: here we should call protocol handlers which rely on
2151 * both buffers.
2152 */
2153
2154
2155 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02002156 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01002157 * we're just in a data phase here since it means we have not
2158 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002159 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002160 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002161 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002162 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002163 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002164 req->analysers = 0;
2165 if (req->flags & CF_READ_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002166 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2167 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002168 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002169 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002170 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002171 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002172 else if (req->flags & CF_READ_TIMEOUT) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002173 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2174 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002175 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002176 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002177 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002178 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002179 else if (req->flags & CF_WRITE_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002180 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2181 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002182 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002183 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002184 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002185 }
2186 else {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002187 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2188 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002189 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002190 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002191 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002192 }
Willy Tarreau84455332009-03-15 22:34:05 +01002193 sess_set_term_flags(s);
Christopher Faulet5e1a9d72019-04-23 17:34:22 +02002194
2195 /* Abort the request if a client error occurred while
2196 * the backend stream-interface is in the SI_ST_INI
2197 * state. It is switched into the SI_ST_CLO state and
2198 * the request channel is erased. */
2199 if (si_b->state == SI_ST_INI) {
2200 si_b->state = SI_ST_CLO;
2201 channel_abort(req);
2202 if (IS_HTX_STRM(s))
2203 channel_htx_erase(req, htxbuf(&req->buf));
2204 else
2205 channel_erase(req);
2206 }
Willy Tarreau84455332009-03-15 22:34:05 +01002207 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002208 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002209 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002210 res->analysers = 0;
2211 if (res->flags & CF_READ_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002212 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2213 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002214 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002215 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002216 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002217 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002218 else if (res->flags & CF_READ_TIMEOUT) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002219 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
2220 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002221 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002222 _HA_ATOMIC_ADD(&srv->counters.srv_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002223 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002224 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002225 else if (res->flags & CF_WRITE_ERROR) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002226 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2227 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002228 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002229 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002230 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002231 }
2232 else {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002233 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
2234 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
Willy Tarreau827aee92011-03-10 16:55:02 +01002235 if (srv)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002236 _HA_ATOMIC_ADD(&srv->counters.cli_aborts, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002237 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002238 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002239 sess_set_term_flags(s);
2240 }
Willy Tarreau84455332009-03-15 22:34:05 +01002241 }
2242
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002243 /*
2244 * Here we take care of forwarding unhandled data. This also includes
2245 * connection establishments and shutdown requests.
2246 */
2247
2248
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002249 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002250 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002251 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002252 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002253 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002254 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002255 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2256 (si_f->state >= SI_ST_EST) &&
2257 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002258 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002259 * attached to it. If any data are left in, we'll permit them to
2260 * move.
2261 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002262 channel_auto_read(req);
2263 channel_auto_connect(req);
2264 channel_auto_close(req);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002265
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002266 if (IS_HTX_STRM(s)) {
2267 struct htx *htx = htxbuf(&req->buf);
2268
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002269 /* We'll let data flow between the producer (if still connected)
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002270 * to the consumer.
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002271 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002272 co_set_data(req, htx->data);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002273 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002274 channel_htx_forward_forever(req, htx);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002275 }
2276 else {
2277 /* We'll let data flow between the producer (if still connected)
2278 * to the consumer (which might possibly not be connected yet).
2279 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002280 c_adv(req, ci_data(req));
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002281 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
2282 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002283
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002284 /* Just in order to support fetching HTTP contents after start
2285 * of forwarding when the HTTP forwarding analyser is not used,
2286 * we simply reset msg->sov so that HTTP rewinding points to the
2287 * headers.
2288 */
Olivier Houchard1909f6d2018-12-06 13:28:30 +01002289 if (s->txn)
2290 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - co_data(req);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002291 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002292 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002293
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002294 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002295 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2296 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002297 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002298 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->rcv_pipe) &&
2299 (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 +01002300 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002301 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2302 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002303 (req->flags & CF_STREAMER_FAST)))) {
2304 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002305 }
2306
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002307 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002308 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002309
2310 /*
2311 * Now forward all shutdown requests between both sides of the buffer
2312 */
2313
Willy Tarreau520d95e2009-09-19 21:04:57 +02002314 /* first, let's check if the request buffer needs to shutdown(write), which may
2315 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002316 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2317 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002318 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002319 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002320 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002321 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002322 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002323
2324 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002325 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2326 channel_is_empty(req))) {
2327 if (req->flags & CF_READ_ERROR)
2328 si_b->flags |= SI_FL_NOLINGER;
2329 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002330 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002331
2332 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002333 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2334 !req->analysers))
2335 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002336
2337 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002338 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2339 if (si_f->flags & SI_FL_NOHALF)
2340 si_f->flags |= SI_FL_NOLINGER;
2341 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002342 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002343
Willy Tarreau520d95e2009-09-19 21:04:57 +02002344 /* it's possible that an upper layer has requested a connection setup or abort.
2345 * There are 2 situations where we decide to establish a new connection :
2346 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002347 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002348 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002349 if (si_b->state == SI_ST_INI) {
Christopher Faulet5e1a9d72019-04-23 17:34:22 +02002350 if (!(req->flags & CF_SHUTW)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002351 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002352 /* If we have an appctx, there is no connect method, so we
2353 * immediately switch to the connected state, otherwise we
2354 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002355 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002356 si_b->state = SI_ST_REQ; /* new connection requested */
2357 si_b->conn_retries = s->be->conn_retries;
Olivier Houchard602bf7d2019-05-10 13:59:15 +02002358 if ((s->be->retry_type &~ PR_RE_CONN_FAILED) &&
2359 !(si_b->flags & SI_FL_D_L7_RETRY))
Olivier Houcharda254a372019-04-05 15:30:12 +02002360 si_b->flags |= SI_FL_L7_RETRY;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002361 }
Willy Tarreau73201222009-08-16 18:27:24 +02002362 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002363 else {
Willy Tarreau0542c8b2017-11-24 15:01:10 +01002364 si_release_endpoint(si_b);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002365 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2366 channel_shutw_now(req); /* fix buffer flags upon abort */
2367 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002368 }
Willy Tarreau92795622009-03-06 12:51:23 +01002369 }
2370
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002371
2372 /* we may have a pending connection request, or a connection waiting
2373 * for completion.
2374 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002375 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002376
2377 /* prune the request variables and swap to the response variables. */
2378 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreaucda7f3f2018-10-28 13:44:36 +01002379 if (!LIST_ISEMPTY(&s->vars_reqres.head)) {
2380 vars_prune(&s->vars_reqres, s->sess, s);
2381 vars_init(&s->vars_reqres, SCOPE_RES);
2382 }
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002383 }
2384
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002385 do {
2386 /* nb: step 1 might switch from QUE to ASS, but we first want
2387 * to give a chance to step 2 to perform a redirect if needed.
2388 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002389 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002390 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002391 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002392 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002393
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002394 /* applets directly go to the ESTABLISHED state. Similarly,
2395 * servers experience the same fate when their connection
2396 * is reused.
2397 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002398 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002399 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002400
Willy Tarreaub44c8732013-12-31 23:16:50 +01002401 /* Now we can add the server name to a header (if requested) */
2402 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002403 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002404 (s->be->server_id_hdr_name != NULL) &&
2405 (s->be->mode == PR_MODE_HTTP) &&
2406 objt_server(s->target)) {
Christopher Faulet27a3dc82018-10-23 15:34:07 +02002407 http_send_name_header(s, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002408 }
2409
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002410 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002411 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002412 http_perform_server_redirect(s, si_b);
2413 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002414 }
2415
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002416 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002417 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002418 goto resync_stream_interface;
2419
Willy Tarreau815a9b22010-07-27 17:15:12 +02002420 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002421 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002422 goto resync_request;
2423
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002424 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002425
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002426 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002427 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002428 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002429 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002430 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002431 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002432 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2433 (si_b->state >= SI_ST_EST) &&
2434 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002435 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002436 * attached to it. If any data are left in, we'll permit them to
2437 * move.
2438 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002439 channel_auto_read(res);
2440 channel_auto_close(res);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002441
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002442 if (IS_HTX_STRM(s)) {
2443 struct htx *htx = htxbuf(&res->buf);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002444
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002445 /* We'll let data flow between the producer (if still connected)
2446 * to the consumer.
2447 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002448 co_set_data(res, htx->data);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002449 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002450 channel_htx_forward_forever(res, htx);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002451 }
2452 else {
2453 /* We'll let data flow between the producer (if still connected)
2454 * to the consumer.
2455 */
Christopher Faulet2dba1a52018-12-18 21:57:24 +01002456 c_adv(res, ci_data(res));
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002457 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
2458 channel_forward_forever(res);
2459
2460 /* Just in order to support fetching HTTP contents after start
2461 * of forwarding when the HTTP forwarding analyser is not used,
2462 * we simply reset msg->sov so that HTTP rewinding points to the
2463 * headers.
2464 */
Olivier Houchard1909f6d2018-12-06 13:28:30 +01002465 if (s->txn)
2466 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - co_data(res);
Christopher Fauletb2aedea2018-12-05 11:56:15 +01002467 }
Willy Tarreau42529c32015-07-09 18:38:57 +02002468
Willy Tarreauce887fd2012-05-12 12:50:00 +02002469 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002470 * tunnel timeout set, use it now. Note that we must respect
2471 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002472 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002473 if (!req->analysers && s->be->timeout.tunnel) {
2474 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002475 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002476
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002477 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2478 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002479 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2480 res->rto = s->be->timeout.serverfin;
2481 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2482 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002483 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2484 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002485
Willy Tarreau8f128b42014-11-28 15:07:47 +01002486 req->rex = tick_add(now_ms, req->rto);
2487 req->wex = tick_add(now_ms, req->wto);
2488 res->rex = tick_add(now_ms, res->rto);
2489 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002490 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002491 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002492
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002493 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002494 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2495 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002496 (global.tune.options & GTUNE_USE_SPLICE) &&
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002497 (objt_cs(si_f->end) && __objt_cs(si_f->end)->conn->xprt && __objt_cs(si_f->end)->conn->xprt->snd_pipe) &&
2498 (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 +01002499 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002500 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2501 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002502 (res->flags & CF_STREAMER_FAST)))) {
2503 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002504 }
2505
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002506 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002507 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002508
2509 /*
2510 * Now forward all shutdown requests between both sides of the buffer
2511 */
2512
2513 /*
2514 * FIXME: this is probably where we should produce error responses.
2515 */
2516
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002517 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002518 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002519 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002520 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002521 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002522
2523 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002524 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2525 channel_is_empty(res))) {
2526 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002527 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002528
2529 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002530 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2531 !res->analysers)
2532 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002533
2534 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002535 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2536 if (si_b->flags & SI_FL_NOHALF)
2537 si_b->flags |= SI_FL_NOLINGER;
2538 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002539 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002540
Willy Tarreau8f128b42014-11-28 15:07:47 +01002541 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002542 goto resync_stream_interface;
2543
Willy Tarreau8f128b42014-11-28 15:07:47 +01002544 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002545 goto resync_request;
2546
Willy Tarreau8f128b42014-11-28 15:07:47 +01002547 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002548 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002549
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002550 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002551 si_f->flags &= ~SI_FL_DONT_WAKE;
2552 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002553
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002554 /* This is needed only when debugging is enabled, to indicate
2555 * client-side or server-side close. Please note that in the unlikely
2556 * event where both sides would close at once, the sequence is reported
2557 * on the server side first.
2558 */
2559 if (unlikely((global.mode & MODE_DEBUG) &&
2560 (!(global.mode & MODE_QUIET) ||
2561 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002562 if (si_b->state == SI_ST_CLO &&
2563 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002564 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002565 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002566 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2567 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002568 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002569 }
2570
Willy Tarreau8f128b42014-11-28 15:07:47 +01002571 if (si_f->state == SI_ST_CLO &&
2572 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002573 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002574 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002575 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2576 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002577 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002578 }
2579 }
2580
Willy Tarreau8f128b42014-11-28 15:07:47 +01002581 if (likely((si_f->state != SI_ST_CLO) ||
2582 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Olivier Houchard120f64a2019-04-09 19:14:59 +02002583 enum si_state si_b_prev_state, si_f_prev_state;
2584
2585 si_f_prev_state = si_f->prev_state;
2586 si_b_prev_state = si_b->prev_state;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002587
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002588 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002589 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002590
Willy Tarreaud14844a2018-11-08 18:15:29 +01002591 si_update_both(si_f, si_b);
Olivier Houchard53216e72018-10-10 15:46:36 +02002592
Olivier Houchard120f64a2019-04-09 19:14:59 +02002593 if (si_f->state == SI_ST_DIS || si_f->state != si_f_prev_state ||
2594 si_b->state == SI_ST_DIS || si_b->state != si_b_prev_state ||
Olivier Houchard56897e22019-04-10 13:51:37 +02002595 ((si_f->flags & SI_FL_ERR) && si_f->state != SI_ST_CLO) ||
2596 ((si_b->flags & SI_FL_ERR) && si_b->state != SI_ST_CLO) ||
Willy Tarreau85f89012018-10-25 11:06:57 +02002597 (((req->flags ^ rqf_last) | (res->flags ^ rpf_last)) & CF_MASK_ANALYSER))
Olivier Houchard53216e72018-10-10 15:46:36 +02002598 goto redo;
2599
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002600 /* Trick: if a request is being waiting for the server to respond,
2601 * and if we know the server can timeout, we don't want the timeout
2602 * to expire on the client side first, but we're still interested
2603 * in passing data from the client to the server (eg: POST). Thus,
2604 * we can cancel the client's request timeout if the server's
2605 * request timeout is set and the server has not yet sent a response.
2606 */
2607
Willy Tarreau8f128b42014-11-28 15:07:47 +01002608 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2609 (tick_isset(req->wex) || tick_isset(res->rex))) {
2610 req->flags |= CF_READ_NOEXP;
2611 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002612 }
2613
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002614 /* Reset pending events now */
2615 s->pending_events = 0;
2616
Willy Tarreau798f4322012-11-08 14:49:17 +01002617 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002618 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002619 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2620 tick_first(tick_first(req->rex, req->wex),
2621 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002622 if (!req->analysers)
2623 req->analyse_exp = TICK_ETERNITY;
2624
2625 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2626 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2627 req->analyse_exp = tick_add(now_ms, 5000);
2628
2629 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002630
Willy Tarreau9a398be2017-11-10 17:14:23 +01002631 t->expire = tick_first(t->expire, res->analyse_exp);
2632
Willy Tarreau8f128b42014-11-28 15:07:47 +01002633 if (si_f->exp)
2634 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002635
Willy Tarreau8f128b42014-11-28 15:07:47 +01002636 if (si_b->exp)
2637 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002638
Christopher Faulet56803b12017-11-24 16:06:18 +01002639 DPRINTF(stderr,
Willy Tarreau127334e2009-03-28 10:47:26 +01002640 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2641 " 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 +01002642 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2643 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002644
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002645 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002646 stream_release_buffers(s);
Olivier Houchardc2aa7112018-09-11 18:27:21 +02002647 /* We may have free'd some space in buffers, or have more to send/recv, try again */
Willy Tarreau4ad574f2019-04-25 19:48:10 +02002648
2649 if (cpu_time_before) {
2650 cpu_time_after = now_cpu_time();
2651 cpu_time_after -= cpu_time_before;
2652 if (cpu_time_after >= 100000000U) {
2653 /* more than 1 ms CPU time spent in analysers is already absolutely
2654 * insane, but on tiny machines where performance doesn't matter it
2655 * may happen when using tons of regex, so let's fix the threshold
2656 * to 100ms which must never ever be hit.
2657 */
2658 stream_dump_and_crash(&s->obj_type, -(cpu_time_after / 1000));
2659 }
2660 }
Willy Tarreau26c25062009-03-08 09:38:41 +01002661 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002662 }
2663
Willy Tarreaue7dff022015-04-03 01:14:29 +02002664 if (s->flags & SF_BE_ASSIGNED)
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002665 _HA_ATOMIC_SUB(&s->be->beconn, 1);
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002666
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002667 if (unlikely((global.mode & MODE_DEBUG) &&
2668 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002669 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002670 s->uniq_id, s->be->id,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002671 objt_cs(si_f->end) ? (unsigned short)objt_cs(si_f->end)->conn->handle.fd : -1,
2672 objt_cs(si_b->end) ? (unsigned short)objt_cs(si_b->end)->conn->handle.fd : -1);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002673 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002674 }
2675
2676 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002677 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002678
Willy Tarreaueee5b512015-04-03 23:46:31 +02002679 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002680 int n;
2681
Willy Tarreaueee5b512015-04-03 23:46:31 +02002682 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002683 if (n < 1 || n > 5)
2684 n = 0;
2685
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002686 if (sess->fe->mode == PR_MODE_HTTP) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002687 _HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002688 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002689 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002690 (s->be->mode == PR_MODE_HTTP)) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002691 _HA_ATOMIC_ADD(&s->be->be_counters.p.http.rsp[n], 1);
2692 _HA_ATOMIC_ADD(&s->be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002693 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002694 }
2695
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002696 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002697 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002698 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002699 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreau66425e32018-07-25 06:55:12 +02002700 /* we may need to know the position in the queue */
2701 pendconn_free(s);
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002702 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002703 }
2704
Willy Tarreau87b09662015-04-03 00:22:06 +02002705 /* update time stats for this stream */
2706 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002707
Willy Tarreau4ad574f2019-04-25 19:48:10 +02002708 if (cpu_time_before) {
2709 cpu_time_after = now_cpu_time();
2710 cpu_time_after -= cpu_time_before;
2711 if (cpu_time_after >= 100000000U) {
2712 /* more than 1 ms CPU time spent in analysers is already absolutely
2713 * insane, but on tiny machines where performance doesn't matter it
2714 * may happen when using tons of regex, so let's fix the threshold
2715 * to 100ms which must never ever be hit.
2716 */
2717 stream_dump_and_crash(&s->obj_type, -(cpu_time_after / 1000));
2718 }
2719 }
2720
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002721 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002722 stream_free(s);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002723 task_destroy(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002724 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002725}
2726
Willy Tarreau87b09662015-04-03 00:22:06 +02002727/* Update the stream's backend and server time stats */
2728void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002729{
2730 int t_request;
2731 int t_queue;
2732 int t_connect;
2733 int t_data;
2734 int t_close;
2735 struct server *srv;
2736
2737 t_request = 0;
2738 t_queue = s->logs.t_queue;
2739 t_connect = s->logs.t_connect;
2740 t_close = s->logs.t_close;
2741 t_data = s->logs.t_data;
2742
2743 if (s->be->mode != PR_MODE_HTTP)
2744 t_data = t_connect;
2745
2746 if (t_connect < 0 || t_data < 0)
2747 return;
2748
2749 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2750 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2751
2752 t_data -= t_connect;
2753 t_connect -= t_queue;
2754 t_queue -= t_request;
2755
2756 srv = objt_server(s->target);
2757 if (srv) {
2758 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2759 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2760 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2761 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2762 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002763 HA_SPIN_LOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002764 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2765 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2766 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2767 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002768 HA_SPIN_UNLOCK(PROXY_LOCK, &s->be->lock);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002769}
2770
Willy Tarreau7c669d72008-06-20 15:04:11 +02002771/*
2772 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002773 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002774 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002775 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002776 * server.
2777 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002778void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002779{
2780 if (sess->srv_conn == newsrv)
2781 return;
2782
2783 if (sess->srv_conn) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002784 _HA_ATOMIC_SUB(&sess->srv_conn->served, 1);
2785 _HA_ATOMIC_SUB(&sess->srv_conn->proxy->served, 1);
2786 __ha_barrier_atomic_store();
Willy Tarreau7c669d72008-06-20 15:04:11 +02002787 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2788 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002789 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002790 }
2791
2792 if (newsrv) {
Olivier Houcharddc6111e2019-03-08 18:54:51 +01002793 _HA_ATOMIC_ADD(&newsrv->served, 1);
2794 _HA_ATOMIC_ADD(&newsrv->proxy->served, 1);
2795 __ha_barrier_atomic_store();
Willy Tarreau7c669d72008-06-20 15:04:11 +02002796 if (newsrv->proxy->lbprm.server_take_conn)
2797 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002798 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002799 }
2800}
2801
Willy Tarreau84455332009-03-15 22:34:05 +01002802/* Handle server-side errors for default protocols. It is called whenever a a
2803 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002804 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002805 * them. It's installed as ->srv_error for the server-side stream_interface.
2806 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002807void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002808{
2809 int err_type = si->err_type;
2810 int err = 0, fin = 0;
2811
2812 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002813 err = SF_ERR_CLICL;
2814 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002815 }
2816 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002817 err = SF_ERR_CLICL;
2818 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002819 }
2820 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002821 err = SF_ERR_SRVTO;
2822 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002823 }
2824 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002825 err = SF_ERR_SRVCL;
2826 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002827 }
2828 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002829 err = SF_ERR_SRVTO;
2830 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002831 }
2832 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002833 err = SF_ERR_SRVCL;
2834 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002835 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002836 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002837 err = SF_ERR_RESOURCE;
2838 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002839 }
Willy Tarreau84455332009-03-15 22:34:05 +01002840 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002841 err = SF_ERR_INTERNAL;
2842 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002843 }
2844
Willy Tarreaue7dff022015-04-03 01:14:29 +02002845 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002846 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002847 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002848 s->flags |= fin;
2849}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002850
Willy Tarreaue7dff022015-04-03 01:14:29 +02002851/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002852void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002853{
Willy Tarreau87b09662015-04-03 00:22:06 +02002854 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002855 return;
2856
Willy Tarreau87b09662015-04-03 00:22:06 +02002857 channel_shutw_now(&stream->req);
2858 channel_shutr_now(&stream->res);
2859 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002860 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002861 stream->flags |= why;
2862 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002863}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002864
Willy Tarreau71c07ac2019-04-25 19:08:48 +02002865/* dumps an error message for type <type> at ptr <ptr> related to stream <s>,
2866 * having reached loop rate <rate>, then aborts hoping to retrieve a core. If
2867 * <rate> is negative instead it reports a duration in microseconds.
2868 */
2869void stream_dump_and_crash(enum obj_type *obj, int rate)
2870{
2871 const struct conn_stream *csf, *csb;
2872 const struct connection *cof, *cob;
2873 const struct appctx *acf, *acb;
2874 const struct server *srv;
2875 const struct stream *s;
2876 const char *src = "unknown";
2877 const char *dst = "unknown";
2878 char pn[INET6_ADDRSTRLEN];
2879 char *msg = NULL;
2880 const char *fmt;
2881 const struct channel *req, *res;
2882 const struct stream_interface *si_f, *si_b;
2883 const void *ptr;
2884
2885 ptr = s = objt_stream(obj);
2886 if (!s) {
2887 const struct appctx *appctx = objt_appctx(obj);
2888 if (!appctx)
2889 return;
2890 ptr = appctx;
2891 s = si_strm(appctx->owner);
2892 if (!s)
2893 return;
2894 }
2895
2896 si_f = &s->si[0];
2897 si_b = &s->si[1];
2898 req = &s->req;
2899 res = &s->res;
2900
2901 csf = objt_cs(si_f->end);
2902 cof = cs_conn(csf);
2903 acf = objt_appctx(si_f->end);
2904 if (cof && addr_to_str(&cof->addr.from, pn, sizeof(pn)) >= 0)
2905 src = pn;
2906 else if (acf)
2907 src = acf->applet->name;
2908
2909 csb = objt_cs(si_b->end);
2910 cob = cs_conn(csb);
2911 acb = objt_appctx(si_b->end);
2912 srv = objt_server(s->target);
2913 if (srv)
2914 dst = srv->id;
2915 else if (acb)
2916 dst = acb->applet->name;
2917
2918 if (rate < 0) {
2919 fmt = "A bogus %s [%p] halted the whole thread for at least %d microseconds "
2920 "resulting in a complete freeze of all other tasks, aborting now! Please "
2921 "report this error to developers "
2922 "[src=%s fe=%s be=%s dst=%s rqf=%x rqa=%x rpf=%x rpa=%x sif=%s,%x sib=%s,%x "
2923 "cof=%p,%x:%s/%s/%s/%d cob=%p,%x:%s/%s/%s/%d csf=%p,%x csb=%p,%x af=%p,%u ab=%p,%u]\n";
2924 rate = -rate;
2925 }
2926 else {
2927 fmt = "A bogus %s [%p] is spinning at %d calls per second and refuses to die, "
2928 "aborting now! Please report this error to developers "
2929 "[src=%s fe=%s be=%s dst=%s rqf=%x rqa=%x rpf=%x rpa=%x sif=%s,%x sib=%s,%x "
2930 "cof=%p,%x:%s/%s/%s/%d cob=%p,%x:%s/%s/%s/%d csf=%p,%x csb=%p,%x af=%p,%u ab=%p,%u]\n";
2931 }
2932
2933 memprintf(&msg, fmt,
2934 obj_type_name(obj), ptr, rate, src, s->sess->fe->id, s->be->id, dst,
2935 req->flags, req->analysers, res->flags, res->analysers,
2936 si_state_str(si_f->state), si_f->flags,
2937 si_state_str(si_b->state), si_b->flags,
2938 cof, cof ? cof->flags : 0, conn_get_mux_name(cof), conn_get_xprt_name(cof), conn_get_ctrl_name(cof), cof?cof->handle.fd:0,
2939 cob, cob ? cob->flags : 0, conn_get_mux_name(cob), conn_get_xprt_name(cob), conn_get_ctrl_name(cob), cob?cob->handle.fd:0,
2940 csf, csf ? csf->flags : 0, csb, csb ? csb->flags : 0,
2941 acf, acf ? acf->st0 : 0, acb, acb ? acb->st0 : 0);
2942
2943 ha_alert("%s", msg);
2944 send_log(NULL, LOG_EMERG, "%s", msg);
2945 abort();
2946}
2947
Willy Tarreau8b22a712010-06-18 17:46:06 +02002948/************************************************************************/
2949/* All supported ACL keywords must be declared here. */
2950/************************************************************************/
2951
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002952/* 0=OK, <0=Alert, >0=Warning */
2953static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2954 struct proxy *px, struct act_rule *rule,
2955 char **err)
2956{
2957 struct action_kw *kw;
2958
2959 /* Check if the service name exists. */
2960 if (*(args[*cur_arg]) == 0) {
2961 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002962 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002963 }
2964
2965 /* lookup for keyword corresponding to a service. */
2966 kw = action_lookup(&service_keywords, args[*cur_arg]);
2967 if (!kw) {
2968 memprintf(err, "'%s' unknown service name.", args[1]);
2969 return ACT_RET_PRS_ERR;
2970 }
2971 (*cur_arg)++;
2972
2973 /* executes specific rule parser. */
2974 rule->kw = kw;
2975 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2976 return ACT_RET_PRS_ERR;
2977
2978 /* Register processing function. */
2979 rule->action_ptr = process_use_service;
2980 rule->action = ACT_CUSTOM;
2981
2982 return ACT_RET_PRS_OK;
2983}
2984
2985void service_keywords_register(struct action_kw_list *kw_list)
2986{
2987 LIST_ADDQ(&service_keywords, &kw_list->list);
2988}
2989
Willy Tarreau679bba12019-03-19 08:08:10 +01002990/* Lists the known services on <out> */
2991void list_services(FILE *out)
2992{
2993 struct action_kw_list *kw_list;
2994 int found = 0;
2995 int i;
2996
2997 fprintf(out, "Available services :");
2998 list_for_each_entry(kw_list, &service_keywords, list) {
2999 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
3000 if (!found)
3001 fputc('\n', out);
3002 found = 1;
3003 fprintf(out, "\t%s\n", kw_list->kw[i].kw);
3004 }
3005 }
3006 if (!found)
3007 fprintf(out, " none\n");
3008}
William Lallemand4c5b4d52016-11-21 08:51:11 +01003009
3010/* This function dumps a complete stream state onto the stream interface's
3011 * read buffer. The stream has to be set in strm. It returns 0 if the output
3012 * buffer is full and it needs to be called again, otherwise non-zero. It is
3013 * designed to be called from stats_dump_strm_to_buffer() below.
3014 */
3015static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
3016{
3017 struct appctx *appctx = __objt_appctx(si->end);
3018 struct tm tm;
3019 extern const char *monthname[12];
3020 char pn[INET6_ADDRSTRLEN];
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003021 struct conn_stream *cs;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003022 struct connection *conn;
3023 struct appctx *tmpctx;
3024
3025 chunk_reset(&trash);
3026
3027 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
3028 /* stream changed, no need to go any further */
3029 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreaue6e52362019-01-04 17:42:57 +01003030 if (ci_putchk(si_ic(si), &trash) == -1)
3031 goto full;
3032 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003033 }
3034
3035 switch (appctx->ctx.sess.section) {
3036 case 0: /* main status of the stream */
3037 appctx->ctx.sess.uid = strm->uniq_id;
3038 appctx->ctx.sess.section = 1;
3039 /* fall through */
3040
3041 case 1:
3042 get_localtime(strm->logs.accept_date.tv_sec, &tm);
3043 chunk_appendf(&trash,
3044 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
3045 strm,
3046 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
3047 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
3048 strm->uniq_id,
3049 strm_li(strm) ? strm_li(strm)->proto->name : "?");
3050
3051 conn = objt_conn(strm_orig(strm));
3052 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3053 case AF_INET:
3054 case AF_INET6:
3055 chunk_appendf(&trash, " source=%s:%d\n",
3056 pn, get_host_port(&conn->addr.from));
3057 break;
3058 case AF_UNIX:
3059 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
3060 break;
3061 default:
3062 /* no more information to print right now */
3063 chunk_appendf(&trash, "\n");
3064 break;
3065 }
3066
3067 chunk_appendf(&trash,
Willy Tarreauadf7a152019-01-07 10:10:07 +01003068 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p waiting=%d\n",
3069 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos,
3070 !LIST_ISEMPTY(&strm->buffer_wait.list));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003071
3072 chunk_appendf(&trash,
3073 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
3074 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
3075 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
3076 strm_li(strm) ? strm_li(strm)->luid : 0);
3077
3078 if (conn)
3079 conn_get_to_addr(conn);
3080
3081 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
3082 case AF_INET:
3083 case AF_INET6:
3084 chunk_appendf(&trash, " addr=%s:%d\n",
3085 pn, get_host_port(&conn->addr.to));
3086 break;
3087 case AF_UNIX:
3088 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
3089 break;
3090 default:
3091 /* no more information to print right now */
3092 chunk_appendf(&trash, "\n");
3093 break;
3094 }
3095
3096 if (strm->be->cap & PR_CAP_BE)
3097 chunk_appendf(&trash,
3098 " backend=%s (id=%u mode=%s)",
3099 strm->be->id,
3100 strm->be->uuid, strm->be->mode ? "http" : "tcp");
3101 else
3102 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
3103
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003104 cs = objt_cs(strm->si[1].end);
3105 conn = cs_conn(cs);
3106
William Lallemand4c5b4d52016-11-21 08:51:11 +01003107 if (conn)
3108 conn_get_from_addr(conn);
3109
3110 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3111 case AF_INET:
3112 case AF_INET6:
3113 chunk_appendf(&trash, " addr=%s:%d\n",
3114 pn, get_host_port(&conn->addr.from));
3115 break;
3116 case AF_UNIX:
3117 chunk_appendf(&trash, " addr=unix\n");
3118 break;
3119 default:
3120 /* no more information to print right now */
3121 chunk_appendf(&trash, "\n");
3122 break;
3123 }
3124
3125 if (strm->be->cap & PR_CAP_BE)
3126 chunk_appendf(&trash,
3127 " server=%s (id=%u)",
3128 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
3129 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
3130 else
3131 chunk_appendf(&trash, " server=<NONE> (id=-1)");
3132
3133 if (conn)
3134 conn_get_to_addr(conn);
3135
3136 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
3137 case AF_INET:
3138 case AF_INET6:
3139 chunk_appendf(&trash, " addr=%s:%d\n",
3140 pn, get_host_port(&conn->addr.to));
3141 break;
3142 case AF_UNIX:
3143 chunk_appendf(&trash, " addr=unix\n");
3144 break;
3145 default:
3146 /* no more information to print right now */
3147 chunk_appendf(&trash, "\n");
3148 break;
3149 }
3150
3151 chunk_appendf(&trash,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003152 " task=%p (state=0x%02x nice=%d calls=%u rate=%u exp=%s tmask=0x%lx%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003153 strm->task,
3154 strm->task->state,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003155 strm->task->nice, strm->task->calls, read_freq_ctr(&strm->call_rate),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003156 strm->task->expire ?
3157 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
3158 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
3159 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Fauletf0205062017-11-15 20:56:43 +01003160 strm->task->thread_mask,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003161 task_in_rq(strm->task) ? ", running" : "");
3162
3163 chunk_appendf(&trash,
3164 " age=%s)\n",
3165 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
3166
3167 if (strm->txn)
3168 chunk_appendf(&trash,
Willy Tarreau7778b592019-01-07 10:38:10 +01003169 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s\n"
3170 " req.f=0x%02x blen=%llu chnk=%llu next=%u\n"
3171 " rsp.f=0x%02x blen=%llu chnk=%llu next=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003172 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau7778b592019-01-07 10:38:10 +01003173 h1_msg_state_str(strm->txn->req.msg_state), h1_msg_state_str(strm->txn->rsp.msg_state),
3174 strm->txn->req.flags, strm->txn->req.body_len, strm->txn->req.chunk_len, strm->txn->req.next,
3175 strm->txn->rsp.flags, strm->txn->rsp.body_len, strm->txn->rsp.chunk_len, strm->txn->rsp.next);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003176
3177 chunk_appendf(&trash,
Christopher Faulet224a2d72019-01-04 15:06:13 +01003178 " 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 +01003179 &strm->si[0],
3180 si_state_str(strm->si[0].state),
3181 strm->si[0].flags,
3182 obj_type_name(strm->si[0].end),
3183 obj_base_ptr(strm->si[0].end),
3184 strm->si[0].exp ?
3185 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
3186 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
3187 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Faulet224a2d72019-01-04 15:06:13 +01003188 strm->si[0].err_type, strm->si[0].wait_event.events);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003189
3190 chunk_appendf(&trash,
Christopher Faulet224a2d72019-01-04 15:06:13 +01003191 " 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 +01003192 &strm->si[1],
3193 si_state_str(strm->si[1].state),
3194 strm->si[1].flags,
3195 obj_type_name(strm->si[1].end),
3196 obj_base_ptr(strm->si[1].end),
3197 strm->si[1].exp ?
3198 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
3199 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
3200 TICKS_TO_MS(1000)) : "<NEVER>",
Christopher Faulet224a2d72019-01-04 15:06:13 +01003201 strm->si[1].err_type, strm->si[1].wait_event.events);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003202
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003203 if ((cs = objt_cs(strm->si[0].end)) != NULL) {
3204 conn = cs->conn;
3205
William Lallemand4c5b4d52016-11-21 08:51:11 +01003206 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003207 " co0=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003208 conn,
3209 conn_get_ctrl_name(conn),
3210 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003211 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003212 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003213 obj_type_name(conn->target),
3214 obj_base_ptr(conn->target));
3215
3216 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01003217 " 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 +01003218 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003219 conn->handle.fd,
3220 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01003221 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003222 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003223 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
Willy Tarreaufb3b1b02018-12-18 14:28:24 +01003224
3225 chunk_appendf(&trash, " cs=%p csf=0x%08x ctx=%p\n", cs, cs->flags, cs->ctx);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003226 }
3227 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
3228 chunk_appendf(&trash,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003229 " 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 +01003230 tmpctx,
3231 tmpctx->st0,
3232 tmpctx->st1,
3233 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003234 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003235 tmpctx->thread_mask,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003236 tmpctx->t->nice, tmpctx->t->calls, read_freq_ctr(&tmpctx->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003237 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003238 }
3239
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003240 if ((cs = objt_cs(strm->si[1].end)) != NULL) {
3241 conn = cs->conn;
3242
William Lallemand4c5b4d52016-11-21 08:51:11 +01003243 chunk_appendf(&trash,
Willy Tarreau53a47662017-08-28 10:53:00 +02003244 " co1=%p ctrl=%s xprt=%s mux=%s data=%s target=%s:%p\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003245 conn,
3246 conn_get_ctrl_name(conn),
3247 conn_get_xprt_name(conn),
Willy Tarreau53a47662017-08-28 10:53:00 +02003248 conn_get_mux_name(conn),
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003249 cs_get_data_name(cs),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003250 obj_type_name(conn->target),
3251 obj_base_ptr(conn->target));
3252
3253 chunk_appendf(&trash,
Christopher Fauletf0205062017-11-15 20:56:43 +01003254 " 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 +01003255 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003256 conn->handle.fd,
3257 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
Olivier Houchard12568362018-01-31 18:07:29 +01003258 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache.next >= -2 : 0,
Willy Tarreauebc78d72018-01-20 23:53:50 +01003259 conn->handle.fd >= 0 ? !!(fdtab[conn->handle.fd].update_mask & tid_bit) : 0,
Christopher Fauletf0205062017-11-15 20:56:43 +01003260 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].thread_mask: 0);
Willy Tarreaufb3b1b02018-12-18 14:28:24 +01003261
3262 chunk_appendf(&trash, " cs=%p csf=0x%08x ctx=%p\n", cs, cs->flags, cs->ctx);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003263 }
3264 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
3265 chunk_appendf(&trash,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003266 " 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 +01003267 tmpctx,
3268 tmpctx->st0,
3269 tmpctx->st1,
3270 tmpctx->st2,
Christopher Fauletf0205062017-11-15 20:56:43 +01003271 tmpctx->applet->name,
Willy Tarreau34b1fac2018-05-31 14:40:19 +02003272 tmpctx->thread_mask,
Willy Tarreau22d63a22019-04-24 08:41:29 +02003273 tmpctx->t->nice, tmpctx->t->calls, read_freq_ctr(&tmpctx->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003274 (unsigned long long)tmpctx->t->cpu_time, (unsigned long long)tmpctx->t->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003275 }
3276
3277 chunk_appendf(&trash,
3278 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3279 " an_exp=%s",
3280 &strm->req,
3281 strm->req.flags, strm->req.analysers,
3282 strm->req.pipe ? strm->req.pipe->data : 0,
3283 strm->req.to_forward, strm->req.total,
3284 strm->req.analyse_exp ?
3285 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
3286 TICKS_TO_MS(1000)) : "<NEVER>");
3287
3288 chunk_appendf(&trash,
3289 " rex=%s",
3290 strm->req.rex ?
3291 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
3292 TICKS_TO_MS(1000)) : "<NEVER>");
3293
3294 chunk_appendf(&trash,
3295 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003296 " buf=%p data=%p o=%u p=%u req.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003297 strm->req.wex ?
3298 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
3299 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003300 &strm->req.buf,
3301 b_orig(&strm->req.buf), (unsigned int)co_data(&strm->req),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003302 (unsigned int)ci_head_ofs(&strm->req),
Willy Tarreau591d4452018-06-15 17:21:00 +02003303 strm->txn ? strm->txn->req.next : 0, (unsigned int)ci_data(&strm->req),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003304 (unsigned int)strm->req.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003305
Christopher Fauletb9af8812019-01-04 14:30:44 +01003306 if (IS_HTX_STRM(strm)) {
3307 struct htx *htx = htxbuf(&strm->req.buf);
3308
3309 chunk_appendf(&trash,
Willy Tarreaub84e67f2019-01-07 10:01:34 +01003310 " htx=%p flags=0x%x size=%u data=%u used=%u wrap=%s extra=%llu\n",
3311 htx, htx->flags, htx->size, htx->data, htx->used,
Christopher Fauletb9af8812019-01-04 14:30:44 +01003312 (!htx->used || htx->tail+1 == htx->wrap) ? "NO" : "YES",
3313 (unsigned long long)htx->extra);
3314 }
3315
William Lallemand4c5b4d52016-11-21 08:51:11 +01003316 chunk_appendf(&trash,
3317 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
3318 " an_exp=%s",
3319 &strm->res,
3320 strm->res.flags, strm->res.analysers,
3321 strm->res.pipe ? strm->res.pipe->data : 0,
3322 strm->res.to_forward, strm->res.total,
3323 strm->res.analyse_exp ?
3324 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
3325 TICKS_TO_MS(1000)) : "<NEVER>");
3326
3327 chunk_appendf(&trash,
3328 " rex=%s",
3329 strm->res.rex ?
3330 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
3331 TICKS_TO_MS(1000)) : "<NEVER>");
3332
3333 chunk_appendf(&trash,
3334 " wex=%s\n"
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003335 " buf=%p data=%p o=%u p=%u rsp.next=%d i=%u size=%u\n",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003336 strm->res.wex ?
3337 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
3338 TICKS_TO_MS(1000)) : "<NEVER>",
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003339 &strm->res.buf,
3340 b_orig(&strm->res.buf), (unsigned int)co_data(&strm->res),
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003341 (unsigned int)ci_head_ofs(&strm->res),
Willy Tarreau591d4452018-06-15 17:21:00 +02003342 strm->txn ? strm->txn->rsp.next : 0, (unsigned int)ci_data(&strm->res),
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003343 (unsigned int)strm->res.buf.size);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003344
Christopher Fauletb9af8812019-01-04 14:30:44 +01003345 if (IS_HTX_STRM(strm)) {
3346 struct htx *htx = htxbuf(&strm->res.buf);
3347
3348 chunk_appendf(&trash,
3349 " htx=%p flags=0x%x size=%u data=%u used=%u wrap=%s extra=%llu\n",
3350 htx, htx->flags, htx->size, htx->data, htx->used,
3351 (!htx->used || htx->tail+1 == htx->wrap) ? "NO" : "YES",
3352 (unsigned long long)htx->extra);
3353 }
3354
Willy Tarreaue6e52362019-01-04 17:42:57 +01003355 if (ci_putchk(si_ic(si), &trash) == -1)
3356 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003357
3358 /* use other states to dump the contents */
3359 }
3360 /* end of dump */
Willy Tarreaue6e52362019-01-04 17:42:57 +01003361 done:
William Lallemand4c5b4d52016-11-21 08:51:11 +01003362 appctx->ctx.sess.uid = 0;
3363 appctx->ctx.sess.section = 0;
3364 return 1;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003365 full:
3366 return 0;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003367}
3368
3369
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003370static int cli_parse_show_sess(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemand4c5b4d52016-11-21 08:51:11 +01003371{
William Lallemand4c5b4d52016-11-21 08:51:11 +01003372 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
3373 return 1;
3374
3375 if (*args[2] && strcmp(args[2], "all") == 0)
3376 appctx->ctx.sess.target = (void *)-1;
3377 else if (*args[2])
3378 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
3379 else
3380 appctx->ctx.sess.target = NULL;
3381 appctx->ctx.sess.section = 0; /* start with stream status */
3382 appctx->ctx.sess.pos = 0;
3383
3384 return 0;
3385}
3386
3387/* This function dumps all streams' states onto the stream interface's
3388 * read buffer. It returns 0 if the output buffer is full and it needs
Willy Tarreaue6e52362019-01-04 17:42:57 +01003389 * to be called again, otherwise non-zero. It proceeds in an isolated
3390 * thread so there is no thread safety issue here.
William Lallemand4c5b4d52016-11-21 08:51:11 +01003391 */
3392static int cli_io_handler_dump_sess(struct appctx *appctx)
3393{
3394 struct stream_interface *si = appctx->owner;
3395 struct connection *conn;
3396
Willy Tarreaue6e52362019-01-04 17:42:57 +01003397 thread_isolate();
3398
William Lallemand4c5b4d52016-11-21 08:51:11 +01003399 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3400 /* If we're forced to shut down, we might have to remove our
3401 * reference to the last stream being dumped.
3402 */
3403 if (appctx->st2 == STAT_ST_LIST) {
3404 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3405 LIST_DEL(&appctx->ctx.sess.bref.users);
3406 LIST_INIT(&appctx->ctx.sess.bref.users);
3407 }
3408 }
Willy Tarreaue6e52362019-01-04 17:42:57 +01003409 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003410 }
3411
3412 chunk_reset(&trash);
3413
3414 switch (appctx->st2) {
3415 case STAT_ST_INIT:
3416 /* the function had not been called yet, let's prepare the
3417 * buffer for a response. We initialize the current stream
3418 * pointer to the first in the global list. When a target
3419 * stream is being destroyed, it is responsible for updating
3420 * this pointer. We know we have reached the end when this
3421 * pointer points back to the head of the streams list.
3422 */
3423 LIST_INIT(&appctx->ctx.sess.bref.users);
3424 appctx->ctx.sess.bref.ref = streams.n;
3425 appctx->st2 = STAT_ST_LIST;
3426 /* fall through */
3427
3428 case STAT_ST_LIST:
3429 /* first, let's detach the back-ref from a possible previous stream */
3430 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3431 LIST_DEL(&appctx->ctx.sess.bref.users);
3432 LIST_INIT(&appctx->ctx.sess.bref.users);
3433 }
3434
3435 /* and start from where we stopped */
3436 while (appctx->ctx.sess.bref.ref != &streams) {
3437 char pn[INET6_ADDRSTRLEN];
3438 struct stream *curr_strm;
3439
3440 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3441
3442 if (appctx->ctx.sess.target) {
3443 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3444 goto next_sess;
3445
3446 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3447 /* call the proper dump() function and return if we're missing space */
Willy Tarreaue6e52362019-01-04 17:42:57 +01003448 if (!stats_dump_full_strm_to_buffer(si, curr_strm))
3449 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003450
3451 /* stream dump complete */
3452 LIST_DEL(&appctx->ctx.sess.bref.users);
3453 LIST_INIT(&appctx->ctx.sess.bref.users);
3454 if (appctx->ctx.sess.target != (void *)-1) {
3455 appctx->ctx.sess.target = NULL;
3456 break;
3457 }
3458 else
3459 goto next_sess;
3460 }
3461
3462 chunk_appendf(&trash,
3463 "%p: proto=%s",
3464 curr_strm,
3465 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3466
3467 conn = objt_conn(strm_orig(curr_strm));
3468 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3469 case AF_INET:
3470 case AF_INET6:
3471 chunk_appendf(&trash,
3472 " src=%s:%d fe=%s be=%s srv=%s",
3473 pn,
3474 get_host_port(&conn->addr.from),
3475 strm_fe(curr_strm)->id,
3476 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3477 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3478 );
3479 break;
3480 case AF_UNIX:
3481 chunk_appendf(&trash,
3482 " src=unix:%d fe=%s be=%s srv=%s",
3483 strm_li(curr_strm)->luid,
3484 strm_fe(curr_strm)->id,
3485 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3486 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3487 );
3488 break;
3489 }
3490
3491 chunk_appendf(&trash,
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003492 " ts=%02x age=%s calls=%u rate=%u cpu=%llu lat=%llu",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003493 curr_strm->task->state,
3494 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
Willy Tarreau2e9c1d22019-04-24 08:28:31 +02003495 curr_strm->task->calls, read_freq_ctr(&curr_strm->call_rate),
Willy Tarreau9efd7452018-05-31 14:48:54 +02003496 (unsigned long long)curr_strm->task->cpu_time, (unsigned long long)curr_strm->task->lat_time);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003497
3498 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003499 " rq[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003500 curr_strm->req.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003501 (unsigned int)ci_data(&curr_strm->req),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003502 curr_strm->req.analysers,
3503 curr_strm->req.rex ?
3504 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3505 TICKS_TO_MS(1000)) : "");
3506
3507 chunk_appendf(&trash,
3508 ",wx=%s",
3509 curr_strm->req.wex ?
3510 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3511 TICKS_TO_MS(1000)) : "");
3512
3513 chunk_appendf(&trash,
3514 ",ax=%s]",
3515 curr_strm->req.analyse_exp ?
3516 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3517 TICKS_TO_MS(1000)) : "");
3518
3519 chunk_appendf(&trash,
Willy Tarreau506a29a2018-07-18 10:07:58 +02003520 " rp[f=%06xh,i=%u,an=%02xh,rx=%s",
William Lallemand4c5b4d52016-11-21 08:51:11 +01003521 curr_strm->res.flags,
Willy Tarreau7e9c30a2018-06-15 19:24:46 +02003522 (unsigned int)ci_data(&curr_strm->res),
William Lallemand4c5b4d52016-11-21 08:51:11 +01003523 curr_strm->res.analysers,
3524 curr_strm->res.rex ?
3525 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3526 TICKS_TO_MS(1000)) : "");
3527
3528 chunk_appendf(&trash,
3529 ",wx=%s",
3530 curr_strm->res.wex ?
3531 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3532 TICKS_TO_MS(1000)) : "");
3533
3534 chunk_appendf(&trash,
3535 ",ax=%s]",
3536 curr_strm->res.analyse_exp ?
3537 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3538 TICKS_TO_MS(1000)) : "");
3539
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003540 conn = cs_conn(objt_cs(curr_strm->si[0].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003541 chunk_appendf(&trash,
3542 " s0=[%d,%1xh,fd=%d,ex=%s]",
3543 curr_strm->si[0].state,
3544 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003545 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003546 curr_strm->si[0].exp ?
3547 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3548 TICKS_TO_MS(1000)) : "");
3549
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003550 conn = cs_conn(objt_cs(curr_strm->si[1].end));
William Lallemand4c5b4d52016-11-21 08:51:11 +01003551 chunk_appendf(&trash,
3552 " s1=[%d,%1xh,fd=%d,ex=%s]",
3553 curr_strm->si[1].state,
3554 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003555 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003556 curr_strm->si[1].exp ?
3557 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3558 TICKS_TO_MS(1000)) : "");
3559
3560 chunk_appendf(&trash,
3561 " exp=%s",
3562 curr_strm->task->expire ?
3563 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3564 TICKS_TO_MS(1000)) : "");
3565 if (task_in_rq(curr_strm->task))
3566 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3567
3568 chunk_appendf(&trash, "\n");
3569
Willy Tarreau06d80a92017-10-19 14:32:15 +02003570 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003571 /* let's try again later from this stream. We add ourselves into
3572 * this stream's users so that it can remove us upon termination.
3573 */
William Lallemand4c5b4d52016-11-21 08:51:11 +01003574 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
Willy Tarreaue6e52362019-01-04 17:42:57 +01003575 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003576 }
3577
3578 next_sess:
3579 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3580 }
3581
3582 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3583 /* specified stream not found */
3584 if (appctx->ctx.sess.section > 0)
3585 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3586 else
3587 chunk_appendf(&trash, "Session not found.\n");
3588
Willy Tarreaue6e52362019-01-04 17:42:57 +01003589 if (ci_putchk(si_ic(si), &trash) == -1)
3590 goto full;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003591
3592 appctx->ctx.sess.target = NULL;
3593 appctx->ctx.sess.uid = 0;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003594 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003595 }
William Lallemand4c5b4d52016-11-21 08:51:11 +01003596 /* fall through */
3597
3598 default:
3599 appctx->st2 = STAT_ST_FIN;
Willy Tarreaue6e52362019-01-04 17:42:57 +01003600 goto done;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003601 }
Willy Tarreaue6e52362019-01-04 17:42:57 +01003602 done:
3603 thread_release();
3604 return 1;
3605 full:
3606 thread_release();
3607 si_rx_room_blk(si);
3608 return 0;
William Lallemand4c5b4d52016-11-21 08:51:11 +01003609}
3610
3611static void cli_release_show_sess(struct appctx *appctx)
3612{
3613 if (appctx->st2 == STAT_ST_LIST) {
Willy Tarreau7ce3f092017-11-10 16:24:41 +01003614 HA_SPIN_LOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003615 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3616 LIST_DEL(&appctx->ctx.sess.bref.users);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003617 HA_SPIN_UNLOCK(STRMS_LOCK, &streams_lock);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003618 }
3619}
3620
Willy Tarreau61b65212016-11-24 11:09:25 +01003621/* Parses the "shutdown session" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003622static int cli_parse_shutdown_session(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau61b65212016-11-24 11:09:25 +01003623{
3624 struct stream *strm, *ptr;
3625
3626 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3627 return 1;
3628
3629 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003630 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003631 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003632 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003633 return 1;
3634 }
3635
3636 ptr = (void *)strtoul(args[2], NULL, 0);
3637
3638 /* first, look for the requested stream in the stream table */
3639 list_for_each_entry(strm, &streams, list) {
3640 if (strm == ptr)
3641 break;
3642 }
3643
3644 /* do we have the stream ? */
3645 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003646 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003647 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003648 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003649 return 1;
3650 }
3651
3652 stream_shutdown(strm, SF_ERR_KILLED);
3653 return 1;
3654}
3655
Willy Tarreau4e46b622016-11-23 16:50:48 +01003656/* Parses the "shutdown session server" directive, it always returns 1 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02003657static int cli_parse_shutdown_sessions_server(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau4e46b622016-11-23 16:50:48 +01003658{
3659 struct server *sv;
3660 struct stream *strm, *strm_bck;
3661
3662 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3663 return 1;
3664
3665 sv = cli_find_server(appctx, args[3]);
3666 if (!sv)
3667 return 1;
3668
3669 /* kill all the stream that are on this server */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003670 HA_SPIN_LOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003671 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3672 if (strm->srv_conn == sv)
3673 stream_shutdown(strm, SF_ERR_KILLED);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01003674 HA_SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
Willy Tarreau4e46b622016-11-23 16:50:48 +01003675 return 1;
3676}
3677
William Lallemand4c5b4d52016-11-21 08:51:11 +01003678/* register cli keywords */
3679static struct cli_kw_list cli_kws = {{ },{
3680 { { "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 +01003681 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003682 { { "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 +01003683 {{},}
3684}};
3685
Willy Tarreau0108d902018-11-25 19:14:37 +01003686INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
3687
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003688/* main configuration keyword registration. */
3689static struct action_kw_list stream_tcp_keywords = { ILH, {
3690 { "use-service", stream_parse_use_service },
3691 { /* END */ }
3692}};
3693
Willy Tarreau0108d902018-11-25 19:14:37 +01003694INITCALL1(STG_REGISTER, tcp_req_cont_keywords_register, &stream_tcp_keywords);
3695
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003696static struct action_kw_list stream_http_keywords = { ILH, {
3697 { "use-service", stream_parse_use_service },
3698 { /* END */ }
3699}};
3700
Willy Tarreau0108d902018-11-25 19:14:37 +01003701INITCALL1(STG_REGISTER, http_req_keywords_register, &stream_http_keywords);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003702
Willy Tarreaubaaee002006-06-26 02:48:02 +02003703/*
3704 * Local variables:
3705 * c-indent-level: 8
3706 * c-basic-offset: 8
3707 * End:
3708 */