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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
Willy Tarreau87b09662015-04-03 00:22:06 +02002 * Stream management functions.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003 *
Willy Tarreaud28c3532012-04-19 19:28:33 +02004 * Copyright 2000-2012 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <stdlib.h>
Willy Tarreau81f9aa32010-06-01 17:45:26 +020014#include <unistd.h>
15#include <fcntl.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020016
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020017#include <common/cfgparse.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020018#include <common/config.h>
Willy Tarreau9b28e032012-10-12 23:49:43 +020019#include <common/buffer.h>
Willy Tarreau7c669d72008-06-20 15:04:11 +020020#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020021#include <common/memory.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020022
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020023#include <types/applet.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020024#include <types/capture.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010025#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020026#include <types/filters.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010027#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010028#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020029
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020030#include <proto/acl.h>
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020031#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020032#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010033#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020034#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010035#include <proto/checks.h>
William Lallemand4c5b4d52016-11-21 08:51:11 +010036#include <proto/cli.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020037#include <proto/connection.h>
William Lallemand9ed62032016-11-21 17:49:11 +010038#include <proto/stats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020039#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020040#include <proto/filters.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020041#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020042#include <proto/frontend.h>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010043#include <proto/hdr_idx.h>
Thierry FOURNIER65f34c62015-02-16 20:11:43 +010044#include <proto/hlua.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020045#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020046#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020047#include <proto/raw_sock.h>
Willy Tarreaufeb76402015-04-03 14:10:06 +020048#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020049#include <proto/stream.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010050#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010051#include <proto/proto_http.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020052#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020053#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010054#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020055#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010056#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010057#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010058#include <proto/task.h>
Willy Tarreau39713102016-11-25 15:49:32 +010059#include <proto/tcp_rules.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020060#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020061
Willy Tarreau87b09662015-04-03 00:22:06 +020062struct pool_head *pool2_stream;
63struct list streams;
Willy Tarreaubaaee002006-06-26 02:48:02 +020064
Thierry FOURNIER5a363e72015-09-27 19:29:33 +020065/* List of all use-service keywords. */
66static struct list service_keywords = LIST_HEAD_INIT(service_keywords);
67
Willy Tarreau5790eb02017-08-28 17:18:36 +020068
69/* Create a new stream for connection <conn>. Return < 0 on error. This is only
70 * valid right after the handshake, before the connection's data layer is
71 * initialized, because it relies on the session to be in conn->owner.
72 */
73int stream_create_from_conn(struct connection *conn)
74{
75 struct stream *strm;
76
77 strm = stream_new(conn->owner, &conn->obj_type);
78 if (strm == NULL)
79 return -1;
80
81 task_wakeup(strm->task, TASK_WOKEN_INIT);
82 return 0;
83}
84
Willy Tarreau9903f0e2015-04-04 18:50:31 +020085/* This function is called from the session handler which detects the end of
Willy Tarreau73b65ac2015-04-08 18:26:29 +020086 * handshake, in order to complete initialization of a valid stream. It must be
Willy Tarreau87787ac2017-08-28 16:22:54 +020087 * called with a completley initialized session. It returns the pointer to
Willy Tarreau73b65ac2015-04-08 18:26:29 +020088 * the newly created stream, or NULL in case of fatal error. The client-facing
Willy Tarreau87787ac2017-08-28 16:22:54 +020089 * end point is assigned to <origin>, which must be valid. The stream's task
90 * is configured with a nice value inherited from the listener's nice if any.
91 * The task's context is set to the new stream, and its function is set to
92 * process_stream(). Target and analysers are null.
Willy Tarreau2542b532012-08-31 16:01:23 +020093 */
Willy Tarreau87787ac2017-08-28 16:22:54 +020094struct stream *stream_new(struct session *sess, enum obj_type *origin)
Willy Tarreau2542b532012-08-31 16:01:23 +020095{
Willy Tarreau02a0c0e2015-04-04 18:08:21 +020096 struct stream *s;
Willy Tarreau87787ac2017-08-28 16:22:54 +020097 struct task *t;
Willy Tarreau73b65ac2015-04-08 18:26:29 +020098 struct connection *conn = objt_conn(origin);
99 struct appctx *appctx = objt_appctx(origin);
Willy Tarreau2542b532012-08-31 16:01:23 +0200100
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200101 if (unlikely((s = pool_alloc2(pool2_stream)) == NULL))
Willy Tarreau87787ac2017-08-28 16:22:54 +0200102 goto out_fail_alloc;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200103
104 /* minimum stream initialization required for an embryonic stream is
105 * fairly low. We need very little to execute L4 ACLs, then we need a
106 * task to make the client-side connection live on its own.
107 * - flags
108 * - stick-entry tracking
109 */
110 s->flags = 0;
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200111 s->logs.logwait = sess->fe->to_log;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200112 s->logs.level = 0;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200113 s->logs.accept_date = sess->accept_date; /* user-visible date for logging */
114 s->logs.tv_accept = sess->tv_accept; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200115 /* This function is called just after the handshake, so the handshake duration is
116 * between the accept time and now.
117 */
118 s->logs.t_handshake = tv_ms_elapsed(&sess->tv_accept, &now);
119 s->logs.t_idle = -1;
Willy Tarreau99eb0f12015-04-05 12:03:54 +0200120 tv_zero(&s->logs.tv_request);
121 s->logs.t_queue = -1;
122 s->logs.t_connect = -1;
123 s->logs.t_data = -1;
124 s->logs.t_close = 0;
125 s->logs.bytes_in = s->logs.bytes_out = 0;
126 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
127 s->logs.srv_queue_size = 0; /* we will get this number soon */
128
129 /* default logging function */
130 s->do_log = strm_log;
131
132 /* default error reporting function, may be changed by analysers */
133 s->srv_error = default_srv_error;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200134
135 /* Initialise the current rule list pointer to NULL. We are sure that
136 * any rulelist match the NULL pointer.
137 */
138 s->current_rule_list = NULL;
Remi Gacogne7fb9de22015-07-22 17:10:58 +0200139 s->current_rule = NULL;
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200140
Willy Tarreaua68f7622015-09-21 17:48:24 +0200141 /* Copy SC counters for the stream. We don't touch refcounts because
142 * any reference we have is inherited from the session. Since the stream
143 * doesn't exist without the session, the session's existence guarantees
144 * we don't lose the entry. During the store operation, the stream won't
145 * touch these ones.
Thierry FOURNIER827752e2015-08-18 11:34:18 +0200146 */
Thierry FOURNIERc8fdb982015-08-16 12:03:39 +0200147 memcpy(s->stkctr, sess->stkctr, sizeof(s->stkctr));
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200148
149 s->sess = sess;
150 s->si[0].flags = SI_FL_NONE;
151 s->si[1].flags = SI_FL_ISBACK;
152
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200153 s->uniq_id = global.req_count++;
154
Willy Tarreau87b09662015-04-03 00:22:06 +0200155 /* OK, we're keeping the stream, so let's properly initialize the stream */
156 LIST_ADDQ(&streams, &s->list);
Willy Tarreau2bfd3582017-06-27 15:20:05 +0200157 LIST_ADDQ(&sess->streams, &s->by_sess);
Willy Tarreau2542b532012-08-31 16:01:23 +0200158 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100159
160 LIST_INIT(&s->buffer_wait.list);
161 s->buffer_wait.target = s;
162 s->buffer_wait.wakeup_cb = (int (*)(void *))stream_res_wakeup;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200163
Willy Tarreaue7dff022015-04-03 01:14:29 +0200164 s->flags |= SF_INITIALIZED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200165 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200166
Willy Tarreau87787ac2017-08-28 16:22:54 +0200167 if ((t = task_new()) == NULL)
168 goto out_fail_alloc;
169
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200170 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100171 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200172 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200173 t->context = s;
174 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200175 if (sess->listener)
176 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200177
Willy Tarreau87b09662015-04-03 00:22:06 +0200178 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200179 * This changes later when switching rules are executed or
180 * when the default backend is assigned.
181 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200182 s->be = sess->fe;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100183 s->req.buf = s->res.buf = NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200184 s->req_cap = NULL;
185 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200186
Willy Tarreauebcd4842015-06-19 11:59:02 +0200187 /* Initialise all the variables contexts even if not used.
188 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200189 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200190 vars_init(&s->vars_txn, SCOPE_TXN);
191 vars_init(&s->vars_reqres, SCOPE_REQ);
192
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200193 /* this part should be common with other protocols */
Willy Tarreau819d3322014-11-28 12:12:34 +0100194 si_reset(&s->si[0]);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200195 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100196 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200197
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200198 /* attach the incoming connection to the stream interface now. */
Willy Tarreauf2b98742015-04-05 01:30:42 +0200199 if (conn)
200 si_attach_conn(&s->si[0], conn);
Willy Tarreau470280e2015-04-05 01:33:13 +0200201 else if (appctx)
202 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200203
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200204 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200205 s->si[0].flags |= SI_FL_INDEP_STR;
206
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200207 /* pre-initialize the other side's stream interface to an INIT state. The
208 * callbacks will be initialized before attempting to connect.
209 */
Willy Tarreau819d3322014-11-28 12:12:34 +0100210 si_reset(&s->si[1]);
Hongbo Longe39683c2017-03-10 18:41:51 +0100211 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200212
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200213 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200214 s->si[1].flags |= SI_FL_INDEP_STR;
215
Willy Tarreau87b09662015-04-03 00:22:06 +0200216 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100217 s->target = sess->listener ? sess->listener->default_target : NULL;
218
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200219 s->pend_pos = NULL;
220
221 /* init store persistence */
222 s->store_count = 0;
223
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100224 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100225 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100226 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200227 channel_auto_connect(&s->req); /* don't wait to establish connection */
228 channel_auto_close(&s->req); /* let the producer forward close requests */
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200229
230 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100231 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100232 s->req.rex = TICK_ETERNITY;
233 s->req.wex = TICK_ETERNITY;
234 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200235
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100236 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100237 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100238 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200239
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200240 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100241 s->req.flags |= CF_NEVER_WAIT;
242 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200243 }
244
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200245 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100246 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100247 s->res.rex = TICK_ETERNITY;
248 s->res.wex = TICK_ETERNITY;
249 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200250
Willy Tarreaueee5b512015-04-03 23:46:31 +0200251 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100252 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100253
Christopher Faulet92d36382015-11-05 13:35:03 +0100254 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200255 goto out_fail_accept;
256
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200257 /* finish initialization of the accepted file descriptor */
Willy Tarreauf2b98742015-04-05 01:30:42 +0200258 if (conn)
259 conn_data_want_recv(conn);
Willy Tarreau470280e2015-04-05 01:33:13 +0200260 else if (appctx)
Willy Tarreaufe127932015-04-21 19:23:39 +0200261 si_applet_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200262
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200263 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200264 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200265
266 /* it is important not to call the wakeup function directly but to
267 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200268 * priorities to tasks. Using multi thread we must be sure that
269 * stream is fully initialized before calling task_wakeup. So
270 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200271 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200272 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200273
274 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200275 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100276 flt_stream_release(s, 0);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200277 task_free(t);
278 out_fail_alloc:
Willy Tarreau2bfd3582017-06-27 15:20:05 +0200279 LIST_DEL(&s->by_sess);
Willy Tarreau3b246412014-11-25 17:10:33 +0100280 LIST_DEL(&s->list);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200281 pool_free2(pool2_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200282 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200283}
284
Willy Tarreaubaaee002006-06-26 02:48:02 +0200285/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200286 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200287 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200288static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200289{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200290 struct session *sess = strm_sess(s);
291 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100292 struct bref *bref, *back;
Willy Tarreau76325482017-08-17 15:54:46 +0200293 struct connection *cli_conn = objt_conn(s->si[0].end);
Willy Tarreaua4cda672010-06-06 18:28:49 +0200294 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100295
Willy Tarreaubaaee002006-06-26 02:48:02 +0200296 if (s->pend_pos)
297 pendconn_free(s->pend_pos);
Willy Tarreau922a8062008-12-04 09:33:58 +0100298
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100299 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200300 if (s->flags & SF_CURR_SESS) {
301 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100302 objt_server(s->target)->cur_sess--;
Willy Tarreau1e62de62008-11-11 20:20:02 +0100303 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100304 if (may_dequeue_tasks(objt_server(s->target), s->be))
305 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100306 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100307
Willy Tarreau7c669d72008-06-20 15:04:11 +0200308 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200309 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200310 * it should normally be only the same as the one above,
311 * so this should not happen in fact.
312 */
313 sess_change_server(s, NULL);
314 }
315
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100316 if (s->req.pipe)
317 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100318
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100319 if (s->res.pipe)
320 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100321
Willy Tarreaubf883e02014-11-25 21:10:35 +0100322 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100323 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
324 LIST_DEL(&s->buffer_wait.list);
325 LIST_INIT(&s->buffer_wait.list);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100326 }
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100327 if (s->req.buf->size || s->res.buf->size) {
328 b_drop(&s->req.buf);
329 b_drop(&s->res.buf);
330 offer_buffers(NULL, tasks_run_queue + applets_active_queue);
331 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200332
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100333 hlua_ctx_destroy(s->hlua);
334 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200335 if (s->txn)
336 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100337
Willy Tarreau1e954912012-10-12 17:50:05 +0200338 /* ensure the client-side transport layer is destroyed */
Willy Tarreauf79c8172013-10-21 16:30:56 +0200339 if (cli_conn)
340 conn_force_close(cli_conn);
Willy Tarreau1e954912012-10-12 17:50:05 +0200341
Willy Tarreaua4cda672010-06-06 18:28:49 +0200342 for (i = 0; i < s->store_count; i++) {
343 if (!s->store[i].ts)
344 continue;
345 stksess_free(s->store[i].table, s->store[i].ts);
346 s->store[i].ts = NULL;
347 }
348
Willy Tarreaueee5b512015-04-03 23:46:31 +0200349 if (s->txn) {
350 pool_free2(pool2_hdr_idx, s->txn->hdr_idx.v);
351 pool_free2(pool2_http_txn, s->txn);
352 s->txn = NULL;
353 }
354
Christopher Fauletd7c91962015-04-30 11:48:27 +0200355 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100356 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200357
Willy Tarreau92fb9832007-10-16 17:34:28 +0200358 if (fe) {
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200359 pool_free2(fe->rsp_cap_pool, s->res_cap);
360 pool_free2(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200361 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100362
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200363 /* Cleanup all variable contexts. */
Willy Tarreau6204cd92016-03-10 16:33:04 +0100364 vars_prune(&s->vars_txn, s->sess, s);
365 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200366
Willy Tarreau87b09662015-04-03 00:22:06 +0200367 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200368
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100369 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100370 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200371 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100372 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100373 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100374 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200375 if (s->list.n != &streams)
376 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100377 bref->ref = s->list.n;
378 }
Willy Tarreau2bfd3582017-06-27 15:20:05 +0200379 LIST_DEL(&s->by_sess);
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100380 LIST_DEL(&s->list);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200381 si_release_endpoint(&s->si[1]);
382 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200383
384 /* FIXME: for now we have a 1:1 relation between stream and session so
385 * the stream must free the session.
386 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200387 pool_free2(pool2_stream, s);
Willy Tarreau11c36242015-04-04 15:54:03 +0200388 session_free(sess);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200389
390 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200391 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200392 pool_flush2(pool2_buffer);
Willy Tarreau63986c72015-04-03 22:55:33 +0200393 pool_flush2(pool2_http_txn);
Willy Tarreau34eb6712011-10-24 18:15:04 +0200394 pool_flush2(pool2_hdr_idx);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200395 pool_flush2(pool2_requri);
396 pool_flush2(pool2_capture);
Willy Tarreau87b09662015-04-03 00:22:06 +0200397 pool_flush2(pool2_stream);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200398 pool_flush2(pool2_session);
Willy Tarreau3a5e0602014-11-13 16:46:28 +0100399 pool_flush2(pool2_connection);
400 pool_flush2(pool2_pendconn);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200401 pool_flush2(fe->req_cap_pool);
402 pool_flush2(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200403 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200404}
405
Willy Tarreau656859d2014-11-25 19:46:36 +0100406
Willy Tarreau87b09662015-04-03 00:22:06 +0200407/* Allocates a work buffer for stream <s>. It is meant to be called inside
408 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200409 * to work fine, which is the response buffer so that an error message may be
410 * built and returned. Response buffers may be allocated from the reserve, this
411 * is critical to ensure that a response may always flow and will never block a
412 * server from releasing a connection. Returns 0 in case of failure, non-zero
413 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100414 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100415static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100416{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100417 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
418 LIST_DEL(&s->buffer_wait.list);
419 LIST_INIT(&s->buffer_wait.list);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100420 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100421
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200422 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100423 return 1;
424
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100425 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Willy Tarreau656859d2014-11-25 19:46:36 +0100426 return 0;
427}
428
429/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100430 * update() functions. It will try to wake up as many tasks/applets as the
431 * number of buffers that it releases. In practice, most often streams are
432 * blocked on a single buffer, so it makes sense to try to wake two up when two
433 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100434 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200435void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100436{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100437 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100438
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100439 if (s->req.buf->size && buffer_empty(s->req.buf)) {
440 offer = 1;
441 b_free(&s->req.buf);
442 }
443 if (s->res.buf->size && buffer_empty(s->res.buf)) {
444 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100445 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100446 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100447
Willy Tarreaubf883e02014-11-25 21:10:35 +0100448 /* if we're certain to have at least 1 buffer available, and there is
449 * someone waiting, we can wake up a waiter and offer them.
450 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100451 if (offer)
452 offer_buffers(s, tasks_run_queue + applets_active_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100453}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200454
455/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200456int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200457{
Willy Tarreau87b09662015-04-03 00:22:06 +0200458 LIST_INIT(&streams);
459 pool2_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
460 return pool2_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200461}
462
Willy Tarreau87b09662015-04-03 00:22:06 +0200463void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100464{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200465 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100466 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200467 void *ptr1,*ptr2;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100468 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100469
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100470 bytes = s->req.total - s->logs.bytes_in;
471 s->logs.bytes_in = s->req.total;
472 if (bytes) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200473 sess->fe->fe_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100474
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100475 s->be->be_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100476
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100477 if (objt_server(s->target))
478 objt_server(s->target)->counters.bytes_in += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200479
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200480 if (sess->listener && sess->listener->counters)
481 sess->listener->counters->bytes_in += bytes;
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200482
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100483 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200484 struct stkctr *stkctr = &s->stkctr[i];
485
486 if (!stkctr_entry(stkctr)) {
487 stkctr = &sess->stkctr[i];
488 if (!stkctr_entry(stkctr))
489 continue;
490 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200491
Emeric Brun57056f02015-06-15 18:29:57 +0200492 ptr1 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_CNT);
493 if (ptr1)
494 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200495
Emeric Brun57056f02015-06-15 18:29:57 +0200496 ptr2 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_RATE);
497 if (ptr2)
498 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200499 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Emeric Brun57056f02015-06-15 18:29:57 +0200500
501 /* If data was modified, we need to touch to re-schedule sync */
502 if (ptr1 || ptr2)
503 stktable_touch(stkctr->table, stkctr_entry(stkctr), 1);
Willy Tarreau30e71012007-11-26 20:15:35 +0100504 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100505 }
506
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100507 bytes = s->res.total - s->logs.bytes_out;
508 s->logs.bytes_out = s->res.total;
509 if (bytes) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200510 sess->fe->fe_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100511
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100512 s->be->be_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100513
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100514 if (objt_server(s->target))
515 objt_server(s->target)->counters.bytes_out += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200516
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200517 if (sess->listener && sess->listener->counters)
518 sess->listener->counters->bytes_out += bytes;
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200519
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100520 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200521 struct stkctr *stkctr = &s->stkctr[i];
522
523 if (!stkctr_entry(stkctr)) {
524 stkctr = &sess->stkctr[i];
525 if (!stkctr_entry(stkctr))
526 continue;
527 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200528
Emeric Brun57056f02015-06-15 18:29:57 +0200529 ptr1 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_CNT);
530 if (ptr1)
531 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200532
Emeric Brun57056f02015-06-15 18:29:57 +0200533 ptr2 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_RATE);
534 if (ptr2)
535 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200536 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Emeric Brun57056f02015-06-15 18:29:57 +0200537
538 /* If data was modified, we need to touch to re-schedule sync */
539 if (ptr1 || ptr2)
540 stktable_touch(stkctr->table, stkctr_entry(stkctr), 1);
Willy Tarreau30e71012007-11-26 20:15:35 +0100541 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100542 }
543}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200544
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100545/* This function is called with (si->state == SI_ST_CON) meaning that a
546 * connection was attempted and that the file descriptor is already allocated.
547 * We must check for establishment, error and abort. Possible output states
548 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
549 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200550 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100551 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200552static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100553{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100554 struct stream_interface *si = &s->si[1];
555 struct channel *req = &s->req;
556 struct channel *rep = &s->res;
Willy Tarreau350135c2016-11-17 12:05:13 +0100557 struct connection *srv_conn = __objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100558
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100559 /* If we got an error, or if nothing happened and the connection timed
560 * out, we must give up. The CER state handler will take care of retry
561 * attempts and error reports.
562 */
563 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Willy Tarreau103197d2014-11-28 15:26:12 +0100564 if (unlikely(req->flags & CF_WRITE_PARTIAL)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100565 /* Some data were sent past the connection establishment,
566 * so we need to pretend we're established to log correctly
567 * and let later states handle the failure.
568 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100569 si->state = SI_ST_EST;
570 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100571 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100572 return 1;
573 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100574 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100575 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100576
Willy Tarreau350135c2016-11-17 12:05:13 +0100577 conn_force_close(srv_conn);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100578
579 if (si->err_type)
580 return 0;
581
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100582 if (si->flags & SI_FL_ERR)
583 si->err_type = SI_ET_CONN_ERR;
584 else
585 si->err_type = SI_ET_CONN_TO;
586 return 0;
587 }
588
589 /* OK, maybe we want to abort */
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100590 if (!(req->flags & CF_WRITE_PARTIAL) &&
591 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200592 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
593 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100594 s->be->options & PR_O_ABRT_CLOSE)))) {
595 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200596 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100597 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100598 if (s->srv_error)
599 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100600 return 1;
601 }
602
603 /* we need to wait a bit more if there was no activity either */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200604 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100605 return 1;
606
607 /* OK, this means that a connection succeeded. The caller will be
608 * responsible for handling the transition from CON to EST.
609 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100610 si->state = SI_ST_EST;
611 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100612 return 1;
613}
614
615/* This function is called with (si->state == SI_ST_CER) meaning that a
616 * previous connection attempt has failed and that the file descriptor
617 * has already been released. Possible causes include asynchronous error
618 * notification and time out. Possible output states are SI_ST_CLO when
619 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
620 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
621 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
622 * marked as in error state. It returns 0.
623 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200624static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100625{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100626 struct stream_interface *si = &s->si[1];
Willy Tarreau46d5b082017-07-26 20:13:37 +0200627 struct connection *conn = objt_conn(si->end);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100628
Willy Tarreau87b09662015-04-03 00:22:06 +0200629 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100630 if (objt_server(s->target)) {
631 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100632
Willy Tarreaue7dff022015-04-03 01:14:29 +0200633 if (s->flags & SF_CURR_SESS) {
634 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100635 objt_server(s->target)->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100636 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200637
638 if ((si->flags & SI_FL_ERR) &&
639 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
640 /* We tried to connect to a server which is configured
641 * with "verify required" and which doesn't have the
642 * "verifyhost" directive. The server presented a wrong
643 * certificate (a certificate for an unexpected name),
644 * which implies that we have used SNI in the handshake,
645 * and that the server doesn't have the associated cert
646 * and presented a default one.
647 *
648 * This is a serious enough issue not to retry. It's
649 * especially important because this wrong name might
650 * either be the result of a configuration error, and
651 * retrying will only hammer the server, or is caused
652 * by the use of a wrong SNI value, most likely
653 * provided by the client and we don't want to let the
654 * client provoke retries.
655 */
656 si->conn_retries = 0;
657 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100658 }
659
660 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200661 si->conn_retries--;
662 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100663 if (!si->err_type) {
664 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100665 }
666
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100667 if (objt_server(s->target))
668 objt_server(s->target)->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100669 s->be->be_counters.failed_conns++;
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100670 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100671 if (may_dequeue_tasks(objt_server(s->target), s->be))
672 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100673
674 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200675 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100676 s->req.flags |= CF_WRITE_ERROR;
677 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100678
679 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100680 if (s->srv_error)
681 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100682 return 0;
683 }
684
685 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700686 * retry on another server. By default this redispatch occurs on the
687 * last retry, but if configured we allow redispatches to occur on
688 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200689 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100690 * bit to ignore any persistence cookie. We won't count a retry nor a
691 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200692 * If the connection is not persistent, the balancing algorithm is not
693 * determinist (round robin) and there is more than one active server,
694 * we accept to perform an immediate redispatch without waiting since
695 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100696 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200697 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700698 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Willy Tarreau49008c12016-01-13 07:58:44 +0100699 ((__objt_server(s->target)->state < SRV_ST_RUNNING) ||
700 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700701 ((s->be->conn_retries - si->conn_retries) %
702 s->be->redispatch_after == 0)) ||
703 ((s->be->redispatch_after < 0) &&
704 ((s->be->conn_retries - si->conn_retries) %
705 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200706 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700707 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100708 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100709 if (may_dequeue_tasks(objt_server(s->target), s->be))
710 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100711
Willy Tarreaue7dff022015-04-03 01:14:29 +0200712 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100713 si->state = SI_ST_REQ;
714 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100715 if (objt_server(s->target))
716 objt_server(s->target)->counters.retries++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100717 s->be->be_counters.retries++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100718 si->state = SI_ST_ASS;
719 }
720
721 if (si->flags & SI_FL_ERR) {
722 /* The error was an asynchronous connection error, and we will
723 * likely have to retry connecting to the same server, most
724 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200725 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100726 */
727
Willy Tarreaub0290662014-06-13 17:04:44 +0200728 int delay = 1000;
729
730 if (s->be->timeout.connect && s->be->timeout.connect < delay)
731 delay = s->be->timeout.connect;
732
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100733 if (!si->err_type)
734 si->err_type = SI_ET_CONN_ERR;
735
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200736 /* only wait when we're retrying on the same server */
737 if (si->state == SI_ST_ASS ||
738 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
739 (s->be->srv_act <= 1)) {
740 si->state = SI_ST_TAR;
741 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
742 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100743 return 0;
744 }
745 return 0;
746}
747
748/*
749 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200750 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200751 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100752 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200753static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100754{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100755 struct stream_interface *si = &s->si[1];
756 struct channel *req = &s->req;
757 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100758
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100759 /* First, centralize the timers information */
760 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
761 si->exp = TICK_ETERNITY;
762
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100763 if (objt_server(s->target))
764 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100765
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100766 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100767 /* if the user wants to log as soon as possible, without counting
768 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200769 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100770 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100771 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100772 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100773 }
774 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100775 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100776 }
777
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100778 if (!(s->flags & SF_TUNNEL)) {
779 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100780
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100781 /* Be sure to filter response headers if the backend is an HTTP proxy
782 * and if there are filters attached to the stream. */
783 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
784 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
785 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100786
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200787 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200788 if (req->flags & CF_WAKE_CONNECT) {
789 req->flags |= CF_WAKE_ONCE;
790 req->flags &= ~CF_WAKE_CONNECT;
791 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200792 if (objt_conn(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200793 /* real connections have timeouts */
794 req->wto = s->be->timeout.server;
795 rep->rto = s->be->timeout.server;
796 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100797 req->wex = TICK_ETERNITY;
798}
799
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700800/* Check if the connection request is in such a state that it can be aborted. */
801static int check_req_may_abort(struct channel *req, struct stream *s)
802{
803 return ((req->flags & (CF_READ_ERROR)) ||
804 ((req->flags & CF_SHUTW_NOW) && /* empty and client aborted */
805 (channel_is_empty(req) || s->be->options & PR_O_ABRT_CLOSE)));
806}
807
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100808/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
809 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100810 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
811 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
812 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100813 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200814static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100815{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100816 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100817 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100818 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100819
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100820 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%d rqt=%d rph=%d rpt=%d cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100821 now_ms, __FUNCTION__,
822 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400823 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100824 req->rex, s->res.wex,
825 req->flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -0400826 req->buf->i, req->buf->o, s->res.buf->i, s->res.buf->o, s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100827
828 if (si->state == SI_ST_ASS) {
829 /* Server assigned to connection request, we have to try to connect now */
830 int conn_err;
831
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700832 /* Before we try to initiate the connection, see if the
833 * request may be aborted instead.
834 */
835 if (check_req_may_abort(req, s)) {
836 si->err_type |= SI_ET_CONN_ABRT;
837 goto abort_connection;
838 }
839
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100840 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100841 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100842
Willy Tarreaue7dff022015-04-03 01:14:29 +0200843 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100844 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100845 if (srv)
846 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500847 if (srv)
848 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100849 return;
850 }
851
852 /* We have received a synchronous error. We might have to
853 * abort, retry immediately or redispatch.
854 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200855 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100856 if (!si->err_type) {
857 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100858 }
859
Willy Tarreau827aee92011-03-10 16:55:02 +0100860 if (srv)
861 srv_inc_sess_ctr(srv);
862 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500863 srv_set_sess_last(srv);
864 if (srv)
Willy Tarreau827aee92011-03-10 16:55:02 +0100865 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100866 s->be->be_counters.failed_conns++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100867
Willy Tarreau87b09662015-04-03 00:22:06 +0200868 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100869 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100870 if (may_dequeue_tasks(srv, s->be))
871 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100872
873 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200874 si_shutr(si);
875 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100876 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100877
878 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
879
Willy Tarreau87b09662015-04-03 00:22:06 +0200880 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100881 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100882 if (s->srv_error)
883 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100884 return;
885 }
886
887 /* We are facing a retryable error, but we don't want to run a
888 * turn-around now, as the problem is likely a source port
889 * allocation problem, so we want to retry now.
890 */
891 si->state = SI_ST_CER;
892 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100893 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100894 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
895 return;
896 }
897 else if (si->state == SI_ST_QUE) {
898 /* connection request was queued, check for any update */
899 if (!s->pend_pos) {
900 /* The connection is not in the queue anymore. Either
901 * we have a server connection slot available and we
902 * go directly to the assigned state, or we need to
903 * load-balance first and go to the INI state.
904 */
905 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200906 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100907 si->state = SI_ST_REQ;
908 else {
909 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
910 si->state = SI_ST_ASS;
911 }
912 return;
913 }
914
915 /* Connection request still in queue... */
916 if (si->flags & SI_FL_EXP) {
917 /* ... and timeout expired */
918 si->exp = TICK_ETERNITY;
919 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau827aee92011-03-10 16:55:02 +0100920 if (srv)
921 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100922 s->be->be_counters.failed_conns++;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200923 si_shutr(si);
924 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100925 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100926 if (!si->err_type)
927 si->err_type = SI_ET_QUEUE_TO;
928 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100929 if (s->srv_error)
930 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100931 return;
932 }
933
934 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700935 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100936 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100937 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700938 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100939 }
940
941 /* Nothing changed */
942 return;
943 }
944 else if (si->state == SI_ST_TAR) {
945 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700946 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100947 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700948 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100949 }
950
951 if (!(si->flags & SI_FL_EXP))
952 return; /* still in turn-around */
953
954 si->exp = TICK_ETERNITY;
955
Willy Tarreau87b09662015-04-03 00:22:06 +0200956 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100957 * marked "assigned".
958 * FIXME: Should we force a redispatch attempt when the server is down ?
959 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200960 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100961 si->state = SI_ST_ASS;
962 else
963 si->state = SI_ST_REQ;
964 return;
965 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700966 return;
967
968abort_connection:
969 /* give up */
970 si->exp = TICK_ETERNITY;
971 si_shutr(si);
972 si_shutw(si);
973 si->state = SI_ST_CLO;
974 if (s->srv_error)
975 s->srv_error(s, si);
976 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100977}
978
Willy Tarreau87b09662015-04-03 00:22:06 +0200979/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +0900980 * also counts a failed request if the server state has not reached the request
981 * stage.
982 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200983static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +0900984{
Willy Tarreaue7dff022015-04-03 01:14:29 +0200985 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +0900986 if (s->si[1].state < SI_ST_REQ) {
987
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200988 strm_fe(s)->fe_counters.failed_req++;
Willy Tarreau2c1068c2015-09-23 12:21:21 +0200989 if (strm_li(s) && strm_li(s)->counters)
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200990 strm_li(s)->counters->failed_req++;
Simon Hormandec5be42011-06-08 09:19:07 +0900991
Willy Tarreaue7dff022015-04-03 01:14:29 +0200992 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +0900993 }
994 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200995 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +0900996 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200997 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +0900998 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200999 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +09001000 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001001 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001002 }
1003}
1004
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001005/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001006 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1007 * a real connection to a server, indicating that a server has been assigned,
1008 * or SI_ST_EST for a successful connection to an applet. It may also return
1009 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001010 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001011static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001012{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001013 struct stream_interface *si = &s->si[1];
1014
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001015 DPRINTF(stderr,"[%u] %s: sess=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%d rqt=%d rph=%d rpt=%d cs=%d ss=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001016 now_ms, __FUNCTION__,
1017 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001018 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001019 s->req.rex, s->res.wex,
1020 s->req.flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -04001021 s->req.buf->i, s->req.buf->o, s->res.buf->i, s->res.buf->o, s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001022
1023 if (si->state != SI_ST_REQ)
1024 return;
1025
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001026 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1027 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001028 struct appctx *appctx = objt_appctx(si->end);
1029
1030 if (!appctx || appctx->applet != __objt_applet(s->target))
1031 appctx = stream_int_register_handler(si, objt_applet(s->target));
1032
1033 if (!appctx) {
1034 /* No more memory, let's immediately abort. Force the
1035 * error code to ignore the ERR_LOCAL which is not a
1036 * real error.
1037 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001038 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001039
1040 si_shutr(si);
1041 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001042 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001043 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001044 si->state = SI_ST_CLO;
1045 if (s->srv_error)
1046 s->srv_error(s, si);
1047 return;
1048 }
1049
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001050 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001051 si->state = SI_ST_EST;
1052 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001053 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001054 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001055 return;
1056 }
1057
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001058 /* Try to assign a server */
1059 if (srv_redispatch_connect(s) != 0) {
1060 /* We did not get a server. Either we queued the
1061 * connection request, or we encountered an error.
1062 */
1063 if (si->state == SI_ST_QUE)
1064 return;
1065
1066 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001067 si_shutr(si);
1068 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001069 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001070 if (!si->err_type)
1071 si->err_type = SI_ET_CONN_OTHER;
1072 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001073 if (s->srv_error)
1074 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001075 return;
1076 }
1077
1078 /* The server is assigned */
1079 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1080 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001081 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001082}
1083
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001084/* This function parses the use-service action ruleset. It executes
1085 * the associated ACL and set an applet as a stream or txn final node.
1086 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1087 * consistent state. It returns ACT_RET_STOP in succes case because
1088 * use-service must be a terminal action. Returns ACT_RET_YIELD
1089 * if the initialisation function require more data.
1090 */
1091enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1092 struct session *sess, struct stream *s, int flags)
1093
1094{
1095 struct appctx *appctx;
1096
1097 /* Initialises the applet if it is required. */
1098 if (flags & ACT_FLAG_FIRST) {
1099 /* Register applet. this function schedules the applet. */
1100 s->target = &rule->applet.obj_type;
1101 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1102 return ACT_RET_ERR;
1103
1104 /* Initialise the context. */
1105 appctx = si_appctx(&s->si[1]);
1106 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1107 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001108
1109 /* enable the minimally required analyzers in case of HTTP
1110 * keep-alive to properly handle keep-alive and compression
1111 * on the HTTP response.
1112 */
1113 if (rule->from == ACT_F_HTTP_REQ) {
1114 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1115 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1116 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001117 }
1118 else
1119 appctx = si_appctx(&s->si[1]);
1120
1121 /* Stops the applet sheduling, in case of the init function miss
1122 * some data.
1123 */
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001124 si_applet_stop_get(&s->si[1]);
1125
1126 /* Call initialisation. */
1127 if (rule->applet.init)
1128 switch (rule->applet.init(appctx, px, s)) {
1129 case 0: return ACT_RET_ERR;
1130 case 1: break;
1131 default: return ACT_RET_YIELD;
1132 }
1133
1134 /* Now we can schedule the applet. */
1135 si_applet_cant_get(&s->si[1]);
1136 appctx_wakeup(appctx);
1137
1138 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
1139 sess->fe->fe_counters.intercepted_req++;
1140
1141 /* The flag SF_ASSIGNED prevent from server assignment. */
1142 s->flags |= SF_ASSIGNED;
1143
1144 return ACT_RET_STOP;
1145}
1146
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001147/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001148 * if appropriate. The default_backend rule is also considered, then the
1149 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001150 * It returns 1 if the processing can continue on next analysers, or zero if it
1151 * either needs more data or wants to immediately abort the request.
1152 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001153static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001154{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001155 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001156 struct session *sess = s->sess;
1157 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001158
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001159 req->analysers &= ~an_bit;
1160 req->analyse_exp = TICK_ETERNITY;
1161
Willy Tarreau87b09662015-04-03 00:22:06 +02001162 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001163 now_ms, __FUNCTION__,
1164 s,
1165 req,
1166 req->rex, req->wex,
1167 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001168 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001169 req->analysers);
1170
1171 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001172 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001173 struct switching_rule *rule;
1174
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001175 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001176 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001177
Willy Tarreauf51658d2014-04-23 01:21:56 +02001178 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001179 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001180 ret = acl_pass(ret);
1181 if (rule->cond->pol == ACL_COND_UNLESS)
1182 ret = !ret;
1183 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001184
1185 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001186 /* If the backend name is dynamic, try to resolve the name.
1187 * If we can't resolve the name, or if any error occurs, break
1188 * the loop and fallback to the default backend.
1189 */
1190 struct proxy *backend;
1191
1192 if (rule->dynamic) {
1193 struct chunk *tmp = get_trash_chunk();
1194 if (!build_logline(s, tmp->str, tmp->size, &rule->be.expr))
1195 break;
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001196 backend = proxy_be_by_name(tmp->str);
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001197 if (!backend)
1198 break;
1199 }
1200 else
1201 backend = rule->be.backend;
1202
Willy Tarreau87b09662015-04-03 00:22:06 +02001203 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001204 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001205 break;
1206 }
1207 }
1208
1209 /* To ensure correct connection accounting on the backend, we
1210 * have to assign one if it was not set (eg: a listen). This
1211 * measure also takes care of correctly setting the default
1212 * backend if any.
1213 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001214 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001215 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001216 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001217 }
1218
Willy Tarreaufb356202010-08-03 14:02:05 +02001219 /* 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 +02001220 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001221 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1222 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001223 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001224 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001225
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001226 /* 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 +02001227 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001228 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001229 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001230 int ret = 1;
1231
1232 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001233 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 +01001234 ret = acl_pass(ret);
1235 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1236 ret = !ret;
1237 }
1238
1239 if (ret) {
1240 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001241 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001242 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001243 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001244 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001245 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001246 break;
1247 }
1248 }
1249
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001250 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001251
1252 sw_failed:
1253 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001254 channel_abort(&s->req);
1255 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001256
Willy Tarreaue7dff022015-04-03 01:14:29 +02001257 if (!(s->flags & SF_ERR_MASK))
1258 s->flags |= SF_ERR_RESOURCE;
1259 if (!(s->flags & SF_FINST_MASK))
1260 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001261
Willy Tarreaueee5b512015-04-03 23:46:31 +02001262 if (s->txn)
1263 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001264 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001265 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001266 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001267}
1268
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001269/* This stream analyser works on a request. It applies all use-server rules on
1270 * it then returns 1. The data must already be present in the buffer otherwise
1271 * they won't match. It always returns 1.
1272 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001273static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001274{
1275 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001276 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001277 struct server_rule *rule;
1278
Willy Tarreau87b09662015-04-03 00:22:06 +02001279 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001280 now_ms, __FUNCTION__,
1281 s,
1282 req,
1283 req->rex, req->wex,
1284 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001285 req->buf->i + req->buf->o,
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001286 req->analysers);
1287
Willy Tarreaue7dff022015-04-03 01:14:29 +02001288 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001289 list_for_each_entry(rule, &px->server_rules, list) {
1290 int ret;
1291
Willy Tarreau192252e2015-04-04 01:47:55 +02001292 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001293 ret = acl_pass(ret);
1294 if (rule->cond->pol == ACL_COND_UNLESS)
1295 ret = !ret;
1296
1297 if (ret) {
1298 struct server *srv = rule->srv.ptr;
1299
Willy Tarreau892337c2014-05-13 23:41:20 +02001300 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001301 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001302 (s->flags & SF_FORCE_PRST)) {
1303 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001304 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001305 break;
1306 }
1307 /* if the server is not UP, let's go on with next rules
1308 * just in case another one is suited.
1309 */
1310 }
1311 }
1312 }
1313
1314 req->analysers &= ~an_bit;
1315 req->analyse_exp = TICK_ETERNITY;
1316 return 1;
1317}
1318
Emeric Brun1d33b292010-01-04 15:47:17 +01001319/* This stream analyser works on a request. It applies all sticking rules on
1320 * it then returns 1. The data must already be present in the buffer otherwise
1321 * they won't match. It always returns 1.
1322 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001323static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001324{
1325 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001326 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001327 struct sticking_rule *rule;
1328
Willy Tarreau87b09662015-04-03 00:22:06 +02001329 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001330 now_ms, __FUNCTION__,
1331 s,
1332 req,
1333 req->rex, req->wex,
1334 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001335 req->buf->i,
Emeric Brun1d33b292010-01-04 15:47:17 +01001336 req->analysers);
1337
1338 list_for_each_entry(rule, &px->sticking_rules, list) {
1339 int ret = 1 ;
1340 int i;
1341
Willy Tarreau9667a802013-12-09 12:52:13 +01001342 /* Only the first stick store-request of each table is applied
1343 * and other ones are ignored. The purpose is to allow complex
1344 * configurations which look for multiple entries by decreasing
1345 * order of precision and to stop at the first which matches.
1346 * An example could be a store of the IP address from an HTTP
1347 * header first, then from the source if not found.
1348 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001349 for (i = 0; i < s->store_count; i++) {
1350 if (rule->table.t == s->store[i].table)
1351 break;
1352 }
1353
1354 if (i != s->store_count)
1355 continue;
1356
1357 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001358 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001359 ret = acl_pass(ret);
1360 if (rule->cond->pol == ACL_COND_UNLESS)
1361 ret = !ret;
1362 }
1363
1364 if (ret) {
1365 struct stktable_key *key;
1366
Willy Tarreau192252e2015-04-04 01:47:55 +02001367 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 +01001368 if (!key)
1369 continue;
1370
1371 if (rule->flags & STK_IS_MATCH) {
1372 struct stksess *ts;
1373
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001374 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001375 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001376 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001377 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001378
1379 /* srv found in table */
Willy Tarreau13c29de2010-06-06 16:40:39 +02001380 ptr = stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
1381 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Emeric Brun1d33b292010-01-04 15:47:17 +01001382 if (node) {
1383 struct server *srv;
1384
1385 srv = container_of(node, struct server, conf.id);
Willy Tarreau892337c2014-05-13 23:41:20 +02001386 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001387 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001388 (s->flags & SF_FORCE_PRST)) {
1389 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001390 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001391 }
1392 }
1393 }
Emeric Brun85e77c72010-09-23 18:16:52 +02001394 stktable_touch(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001395 }
1396 }
1397 if (rule->flags & STK_IS_STORE) {
1398 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1399 struct stksess *ts;
1400
1401 ts = stksess_new(rule->table.t, key);
1402 if (ts) {
1403 s->store[s->store_count].table = rule->table.t;
1404 s->store[s->store_count++].ts = ts;
1405 }
1406 }
1407 }
1408 }
1409 }
1410
1411 req->analysers &= ~an_bit;
1412 req->analyse_exp = TICK_ETERNITY;
1413 return 1;
1414}
1415
1416/* This stream analyser works on a response. It applies all store rules on it
1417 * then returns 1. The data must already be present in the buffer otherwise
1418 * they won't match. It always returns 1.
1419 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001420static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001421{
1422 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001423 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001424 struct sticking_rule *rule;
1425 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001426 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001427
Willy Tarreau87b09662015-04-03 00:22:06 +02001428 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001429 now_ms, __FUNCTION__,
1430 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001431 rep,
1432 rep->rex, rep->wex,
1433 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001434 rep->buf->i,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001435 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001436
1437 list_for_each_entry(rule, &px->storersp_rules, list) {
1438 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001439
Willy Tarreau9667a802013-12-09 12:52:13 +01001440 /* Only the first stick store-response of each table is applied
1441 * and other ones are ignored. The purpose is to allow complex
1442 * configurations which look for multiple entries by decreasing
1443 * order of precision and to stop at the first which matches.
1444 * An example could be a store of a set-cookie value, with a
1445 * fallback to a parameter found in a 302 redirect.
1446 *
1447 * The store-response rules are not allowed to override the
1448 * store-request rules for the same table, but they may coexist.
1449 * Thus we can have up to one store-request entry and one store-
1450 * response entry for the same table at any time.
1451 */
1452 for (i = nbreq; i < s->store_count; i++) {
1453 if (rule->table.t == s->store[i].table)
1454 break;
1455 }
1456
1457 /* skip existing entries for this table */
1458 if (i < s->store_count)
1459 continue;
1460
Emeric Brun1d33b292010-01-04 15:47:17 +01001461 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001462 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001463 ret = acl_pass(ret);
1464 if (rule->cond->pol == ACL_COND_UNLESS)
1465 ret = !ret;
1466 }
1467
1468 if (ret) {
1469 struct stktable_key *key;
1470
Willy Tarreau192252e2015-04-04 01:47:55 +02001471 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 +01001472 if (!key)
1473 continue;
1474
Willy Tarreau37e340c2013-12-06 23:05:21 +01001475 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001476 struct stksess *ts;
1477
1478 ts = stksess_new(rule->table.t, key);
1479 if (ts) {
1480 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001481 s->store[s->store_count++].ts = ts;
1482 }
1483 }
1484 }
1485 }
1486
1487 /* process store request and store response */
1488 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001489 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001490 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001491
Willy Tarreauc93cd162014-05-13 15:54:22 +02001492 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001493 stksess_free(s->store[i].table, s->store[i].ts);
1494 s->store[i].ts = NULL;
1495 continue;
1496 }
1497
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001498 ts = stktable_lookup(s->store[i].table, s->store[i].ts);
1499 if (ts) {
1500 /* the entry already existed, we can free ours */
Emeric Brun85e77c72010-09-23 18:16:52 +02001501 stktable_touch(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001502 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001503 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001504 else
Emeric Brun85e77c72010-09-23 18:16:52 +02001505 ts = stktable_store(s->store[i].table, s->store[i].ts, 1);
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001506
1507 s->store[i].ts = NULL;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001508 ptr = stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001509 stktable_data_cast(ptr, server_id) = objt_server(s->target)->puid;
Emeric Brun1d33b292010-01-04 15:47:17 +01001510 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001511 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001512
1513 rep->analysers &= ~an_bit;
1514 rep->analyse_exp = TICK_ETERNITY;
1515 return 1;
1516}
1517
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001518/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001519 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001520 */
1521#define UPDATE_ANALYSERS(real, list, back, flag) { \
1522 list = (((list) & ~(flag)) | ~(back)) & (real); \
1523 back = real; \
1524 if (!(list)) \
1525 break; \
1526 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1527 continue; \
1528}
1529
Christopher Fauleta9215b72016-05-11 17:06:28 +02001530/* These 2 following macros call an analayzer for the specified channel if the
1531 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001532 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001533 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001534 * AN_REQ/RES_HTTP_XFER_BODY) */
1535#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1536 { \
1537 if ((list) & (flag)) { \
1538 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001539 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001540 break; \
1541 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1542 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001543 if (!flt_post_analyze((strm), (chn), (flag))) \
1544 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001545 } \
1546 else { \
1547 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1548 break; \
1549 } \
1550 UPDATE_ANALYSERS((chn)->analysers, (list), \
1551 (back), (flag)); \
1552 } \
1553 }
1554
1555#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1556 { \
1557 if ((list) & (flag)) { \
1558 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1559 break; \
1560 UPDATE_ANALYSERS((chn)->analysers, (list), \
1561 (back), (flag)); \
1562 } \
1563 }
1564
Willy Tarreau87b09662015-04-03 00:22:06 +02001565/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001566 * then puts it back to the wait queue in a clean state, or cleans up its
1567 * resources if it must be deleted. Returns in <next> the date the task wants
1568 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1569 * nothing too many times, the request and response buffers flags are monitored
1570 * and each function is called only if at least another function has changed at
1571 * least one flag it is interested in.
1572 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001573struct task *process_stream(struct task *t)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001574{
Willy Tarreau827aee92011-03-10 16:55:02 +01001575 struct server *srv;
Willy Tarreau87b09662015-04-03 00:22:06 +02001576 struct stream *s = t->context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001577 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001578 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001579 unsigned int rq_prod_last, rq_cons_last;
1580 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001581 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001582 struct channel *req, *res;
1583 struct stream_interface *si_f, *si_b;
1584
1585 req = &s->req;
1586 res = &s->res;
1587
1588 si_f = &s->si[0];
1589 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001590
1591 //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 +01001592 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001593
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001594 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001595 if (s->txn)
1596 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001597
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001598 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001599 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1600 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001601
1602 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001603 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1604 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001605
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001606 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001607 si_f->flags |= SI_FL_DONT_WAKE;
1608 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001609
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001610 /* update pending events */
1611 s->pending_events |= (t->state & TASK_WOKEN_ANY);
1612
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001613 /* 1a: Check for low level timeouts if needed. We just set a flag on
1614 * stream interfaces when their timeouts have expired.
1615 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001616 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001617 stream_int_check_timeouts(si_f);
1618 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001619
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001620 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001621 * for future reads or writes. Note: this will also concern upper layers
1622 * but we do not touch any other flag. We must be careful and correctly
1623 * detect state changes when calling them.
1624 */
1625
Willy Tarreau8f128b42014-11-28 15:07:47 +01001626 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001627
Willy Tarreau8f128b42014-11-28 15:07:47 +01001628 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1629 si_b->flags |= SI_FL_NOLINGER;
1630 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001631 }
1632
Willy Tarreau8f128b42014-11-28 15:07:47 +01001633 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1634 if (si_f->flags & SI_FL_NOHALF)
1635 si_f->flags |= SI_FL_NOLINGER;
1636 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001637 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001638
Willy Tarreau8f128b42014-11-28 15:07:47 +01001639 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001640
Willy Tarreau8f128b42014-11-28 15:07:47 +01001641 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1642 si_f->flags |= SI_FL_NOLINGER;
1643 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001644 }
1645
Willy Tarreau8f128b42014-11-28 15:07:47 +01001646 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1647 if (si_b->flags & SI_FL_NOHALF)
1648 si_b->flags |= SI_FL_NOLINGER;
1649 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001650 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001651
Christopher Fauleta00d8172016-11-10 14:58:05 +01001652 if (HAS_FILTERS(s))
1653 flt_stream_check_timeouts(s);
1654
Willy Tarreau798f4322012-11-08 14:49:17 +01001655 /* Once in a while we're woken up because the task expires. But
1656 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001657 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001658 * timeout needs to be refreshed.
1659 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001660 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001661 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
1662 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001663 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001664 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001665 si_f->flags &= ~SI_FL_DONT_WAKE;
1666 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001667 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001668 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001669 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001670
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001671 /* below we may emit error messages so we have to ensure that we have
1672 * our buffers properly allocated.
1673 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001674 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001675 /* No buffer available, we've been subscribed to the list of
1676 * buffer waiters, let's wait for our turn.
1677 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001678 si_f->flags &= ~SI_FL_DONT_WAKE;
1679 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001680 goto update_exp_and_leave;
1681 }
1682
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001683 /* 1b: check for low-level errors reported at the stream interface.
1684 * First we check if it's a retryable error (in which case we don't
1685 * want to tell the buffer). Otherwise we report the error one level
1686 * upper by setting flags into the buffers. Note that the side towards
1687 * the client cannot have connect (hence retryable) errors. Also, the
1688 * connection setup code must be able to deal with any type of abort.
1689 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001690 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001691 if (unlikely(si_f->flags & SI_FL_ERR)) {
1692 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1693 si_shutr(si_f);
1694 si_shutw(si_f);
1695 stream_int_report_error(si_f);
1696 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001697 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001698 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001699 if (srv)
1700 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001701 if (!(s->flags & SF_ERR_MASK))
1702 s->flags |= SF_ERR_CLICL;
1703 if (!(s->flags & SF_FINST_MASK))
1704 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001705 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001706 }
1707 }
1708
Willy Tarreau8f128b42014-11-28 15:07:47 +01001709 if (unlikely(si_b->flags & SI_FL_ERR)) {
1710 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1711 si_shutr(si_b);
1712 si_shutw(si_b);
1713 stream_int_report_error(si_b);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001714 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001715 if (srv)
1716 srv->counters.failed_resp++;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001717 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001718 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001719 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001720 if (srv)
1721 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001722 if (!(s->flags & SF_ERR_MASK))
1723 s->flags |= SF_ERR_SRVCL;
1724 if (!(s->flags & SF_FINST_MASK))
1725 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001726 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001727 }
1728 /* note: maybe we should process connection errors here ? */
1729 }
1730
Willy Tarreau8f128b42014-11-28 15:07:47 +01001731 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001732 /* we were trying to establish a connection on the server side,
1733 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1734 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001735 if (unlikely(!sess_update_st_con_tcp(s)))
1736 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001737 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001738 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001739
1740 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1741 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1742 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1743 */
1744 }
1745
Willy Tarreau8f128b42014-11-28 15:07:47 +01001746 rq_prod_last = si_f->state;
1747 rq_cons_last = si_b->state;
1748 rp_cons_last = si_f->state;
1749 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001750
1751 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001752 /* Check for connection closure */
1753
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001754 DPRINTF(stderr,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001755 "[%u] %s:%d: task=%p s=%p, sfl=0x%08x, rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rqh=%d rqt=%d rph=%d rpt=%d cs=%d ss=%d, cet=0x%x set=0x%x retr=%d\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001756 now_ms, __FUNCTION__, __LINE__,
1757 t,
1758 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001759 req, res,
1760 req->rex, res->wex,
1761 req->flags, res->flags,
1762 req->buf->i, req->buf->o, res->buf->i, res->buf->o, si_f->state, si_b->state,
1763 si_f->err_type, si_b->err_type,
1764 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001765
1766 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001767 if (unlikely(si_f->state == SI_ST_DIS))
1768 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001769
1770 /* When a server-side connection is released, we have to count it and
1771 * check for pending connections on this server.
1772 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001773 if (unlikely(si_b->state == SI_ST_DIS)) {
1774 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001775 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001776 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001777 if (s->flags & SF_CURR_SESS) {
1778 s->flags &= ~SF_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +01001779 srv->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001780 }
1781 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001782 if (may_dequeue_tasks(srv, s->be))
1783 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001784 }
1785 }
1786
1787 /*
1788 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1789 * at this point.
1790 */
1791
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001792 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001793 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001794 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1795 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
1796 si_f->state != rq_prod_last ||
1797 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001798 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001799 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001800
Willy Tarreau8f128b42014-11-28 15:07:47 +01001801 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001802 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001803 unsigned int ana_list;
1804 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001805
Willy Tarreau90deb182010-01-07 00:20:41 +01001806 /* it's up to the analysers to stop new connections,
1807 * disable reading or closing. Note: if an analyser
1808 * disables any of these bits, it is responsible for
1809 * enabling them again when it disables itself, so
1810 * that other analysers are called in similar conditions.
1811 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001812 channel_auto_read(req);
1813 channel_auto_connect(req);
1814 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001815
1816 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001817 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001818 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001819 * the list when not needed. Any analyser may return 0
1820 * to break out of the loop, either because of missing
1821 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001822 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001823 * analyser, and we may loop again if other analysers
1824 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001825 *
1826 * We build a list of analysers to run. We evaluate all
1827 * of these analysers in the order of the lower bit to
1828 * the higher bit. This ordering is very important.
1829 * An analyser will often add/remove other analysers,
1830 * including itself. Any changes to itself have no effect
1831 * on the loop. If it removes any other analysers, we
1832 * want those analysers not to be called anymore during
1833 * this loop. If it adds an analyser that is located
1834 * after itself, we want it to be scheduled for being
1835 * processed during the loop. If it adds an analyser
1836 * which is located before it, we want it to switch to
1837 * it immediately, even if it has already been called
1838 * once but removed since.
1839 *
1840 * In order to achieve this, we compare the analyser
1841 * list after the call with a copy of it before the
1842 * call. The work list is fed with analyser bits that
1843 * appeared during the call. Then we compare previous
1844 * work list with the new one, and check the bits that
1845 * appeared. If the lowest of these bits is lower than
1846 * the current bit, it means we have enabled a previous
1847 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001848 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001849
Willy Tarreau8f128b42014-11-28 15:07:47 +01001850 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001851 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001852 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001853 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001854 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1855 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1856 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1857 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1858 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001859 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001860 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1861 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1862 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1863 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1864 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1865 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1866 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001867 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001868 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001869 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1870 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001871 break;
1872 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001873 }
Willy Tarreau84455332009-03-15 22:34:05 +01001874
Willy Tarreau8f128b42014-11-28 15:07:47 +01001875 rq_prod_last = si_f->state;
1876 rq_cons_last = si_b->state;
1877 req->flags &= ~CF_WAKE_ONCE;
1878 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001879
Willy Tarreau8f128b42014-11-28 15:07:47 +01001880 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001881 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001882 }
1883
Willy Tarreau576507f2010-01-07 00:09:04 +01001884 /* we'll monitor the request analysers while parsing the response,
1885 * because some response analysers may indirectly enable new request
1886 * analysers (eg: HTTP keep-alive).
1887 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001888 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01001889
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001890 resync_response:
1891 /* Analyse response */
1892
Willy Tarreau8f128b42014-11-28 15:07:47 +01001893 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
1894 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
1895 si_f->state != rp_cons_last ||
1896 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001897 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001898 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001899
Willy Tarreau8f128b42014-11-28 15:07:47 +01001900 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001901 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001902 unsigned int ana_list;
1903 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001904
Willy Tarreau90deb182010-01-07 00:20:41 +01001905 /* it's up to the analysers to stop disable reading or
1906 * closing. Note: if an analyser disables any of these
1907 * bits, it is responsible for enabling them again when
1908 * it disables itself, so that other analysers are called
1909 * in similar conditions.
1910 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001911 channel_auto_read(res);
1912 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001913
1914 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001915 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001916 * to MSB. The analysers must remove themselves from
1917 * the list when not needed. Any analyser may return 0
1918 * to break out of the loop, either because of missing
1919 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001920 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001921 * analyser, and we may loop again if other analysers
1922 * are added in the middle.
1923 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001924
Willy Tarreau8f128b42014-11-28 15:07:47 +01001925 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001926 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001927 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001928 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
1929 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001930 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
1931 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
1932 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
1933 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 +01001934 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001935 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001936 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
1937 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001938 break;
1939 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001940 }
1941
Willy Tarreau8f128b42014-11-28 15:07:47 +01001942 rp_cons_last = si_f->state;
1943 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02001944 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001945 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001946
Willy Tarreau8f128b42014-11-28 15:07:47 +01001947 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001948 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001949 }
1950
Willy Tarreau576507f2010-01-07 00:09:04 +01001951 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001952 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01001953 goto resync_request;
1954
Willy Tarreau8f128b42014-11-28 15:07:47 +01001955 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01001956 goto resync_request;
1957
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001958 /* FIXME: here we should call protocol handlers which rely on
1959 * both buffers.
1960 */
1961
1962
1963 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02001964 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01001965 * we're just in a data phase here since it means we have not
1966 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001967 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001968 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001969 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001970 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001971 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001972 req->analysers = 0;
1973 if (req->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001974 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001975 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001976 if (srv)
1977 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001978 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01001979 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001980 else if (req->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001981 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001982 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001983 if (srv)
1984 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001985 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01001986 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001987 else if (req->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001988 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001989 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001990 if (srv)
1991 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001992 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01001993 }
1994 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001995 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001996 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001997 if (srv)
1998 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001999 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002000 }
Willy Tarreau84455332009-03-15 22:34:05 +01002001 sess_set_term_flags(s);
2002 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002003 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002004 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002005 res->analysers = 0;
2006 if (res->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002007 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002008 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002009 if (srv)
2010 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002011 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002012 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002013 else if (res->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002014 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002015 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002016 if (srv)
2017 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002018 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002019 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002020 else if (res->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002021 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002022 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002023 if (srv)
2024 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002025 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002026 }
2027 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002028 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002029 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002030 if (srv)
2031 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002032 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002033 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002034 sess_set_term_flags(s);
2035 }
Willy Tarreau84455332009-03-15 22:34:05 +01002036 }
2037
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002038 /*
2039 * Here we take care of forwarding unhandled data. This also includes
2040 * connection establishments and shutdown requests.
2041 */
2042
2043
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002044 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002045 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002046 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002047 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002048 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002049 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002050 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2051 (si_f->state >= SI_ST_EST) &&
2052 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002053 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002054 * attached to it. If any data are left in, we'll permit them to
2055 * move.
2056 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002057 channel_auto_read(req);
2058 channel_auto_connect(req);
2059 channel_auto_close(req);
2060 buffer_flush(req->buf);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002061
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002062 /* We'll let data flow between the producer (if still connected)
2063 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002064 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002065 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002066 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002067
2068 /* Just in order to support fetching HTTP contents after start
2069 * of forwarding when the HTTP forwarding analyser is not used,
2070 * we simply reset msg->sov so that HTTP rewinding points to the
2071 * headers.
2072 */
2073 if (s->txn)
2074 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - req->buf->o;
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002075 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002076
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002077 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002078 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2079 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002080 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002081 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->rcv_pipe) &&
2082 (objt_conn(si_b->end) && __objt_conn(si_b->end)->xprt && __objt_conn(si_b->end)->xprt->snd_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002083 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002084 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2085 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002086 (req->flags & CF_STREAMER_FAST)))) {
2087 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002088 }
2089
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002090 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002091 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002092
2093 /*
2094 * Now forward all shutdown requests between both sides of the buffer
2095 */
2096
Willy Tarreau520d95e2009-09-19 21:04:57 +02002097 /* first, let's check if the request buffer needs to shutdown(write), which may
2098 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002099 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2100 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002101 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002102 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002103 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002104 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002105 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002106
2107 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002108 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2109 channel_is_empty(req))) {
2110 if (req->flags & CF_READ_ERROR)
2111 si_b->flags |= SI_FL_NOLINGER;
2112 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002113 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002114
2115 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002116 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2117 !req->analysers))
2118 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002119
2120 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002121 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2122 if (si_f->flags & SI_FL_NOHALF)
2123 si_f->flags |= SI_FL_NOLINGER;
2124 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002125 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002126
Willy Tarreau520d95e2009-09-19 21:04:57 +02002127 /* it's possible that an upper layer has requested a connection setup or abort.
2128 * There are 2 situations where we decide to establish a new connection :
2129 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002130 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002131 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002132 if (si_b->state == SI_ST_INI) {
2133 if (!(req->flags & CF_SHUTW)) {
2134 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002135 /* If we have an appctx, there is no connect method, so we
2136 * immediately switch to the connected state, otherwise we
2137 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002138 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002139 si_b->state = SI_ST_REQ; /* new connection requested */
2140 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002141 }
Willy Tarreau73201222009-08-16 18:27:24 +02002142 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002143 else {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002144 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2145 channel_shutw_now(req); /* fix buffer flags upon abort */
2146 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002147 }
Willy Tarreau92795622009-03-06 12:51:23 +01002148 }
2149
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002150
2151 /* we may have a pending connection request, or a connection waiting
2152 * for completion.
2153 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002154 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002155
2156 /* prune the request variables and swap to the response variables. */
2157 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreau6204cd92016-03-10 16:33:04 +01002158 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002159 vars_init(&s->vars_reqres, SCOPE_RES);
2160 }
2161
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002162 do {
2163 /* nb: step 1 might switch from QUE to ASS, but we first want
2164 * to give a chance to step 2 to perform a redirect if needed.
2165 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002166 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002167 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002168 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002169 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002170
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002171 /* applets directly go to the ESTABLISHED state. Similarly,
2172 * servers experience the same fate when their connection
2173 * is reused.
2174 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002175 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002176 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002177
Willy Tarreaub44c8732013-12-31 23:16:50 +01002178 /* Now we can add the server name to a header (if requested) */
2179 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002180 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002181 (s->be->server_id_hdr_name != NULL) &&
2182 (s->be->mode == PR_MODE_HTTP) &&
2183 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002184 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002185 }
2186
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002187 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002188 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002189 http_perform_server_redirect(s, si_b);
2190 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002191 }
2192
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002193 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002194 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002195 goto resync_stream_interface;
2196
Willy Tarreau815a9b22010-07-27 17:15:12 +02002197 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002198 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002199 goto resync_request;
2200
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002201 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002202
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002203 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002204 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002205 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002206 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002207 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002208 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002209 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2210 (si_b->state >= SI_ST_EST) &&
2211 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002212 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002213 * attached to it. If any data are left in, we'll permit them to
2214 * move.
2215 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002216 channel_auto_read(res);
2217 channel_auto_close(res);
2218 buffer_flush(res->buf);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002219
2220 /* We'll let data flow between the producer (if still connected)
2221 * to the consumer.
2222 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002223 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002224 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002225
Willy Tarreau42529c32015-07-09 18:38:57 +02002226 /* Just in order to support fetching HTTP contents after start
2227 * of forwarding when the HTTP forwarding analyser is not used,
2228 * we simply reset msg->sov so that HTTP rewinding points to the
2229 * headers.
2230 */
2231 if (s->txn)
2232 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - res->buf->o;
2233
Willy Tarreauce887fd2012-05-12 12:50:00 +02002234 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002235 * tunnel timeout set, use it now. Note that we must respect
2236 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002237 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002238 if (!req->analysers && s->be->timeout.tunnel) {
2239 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002240 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002241
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002242 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2243 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002244 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2245 res->rto = s->be->timeout.serverfin;
2246 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2247 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002248 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2249 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002250
Willy Tarreau8f128b42014-11-28 15:07:47 +01002251 req->rex = tick_add(now_ms, req->rto);
2252 req->wex = tick_add(now_ms, req->wto);
2253 res->rex = tick_add(now_ms, res->rto);
2254 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002255 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002256 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002257
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002258 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002259 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2260 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002261 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002262 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->snd_pipe) &&
2263 (objt_conn(si_b->end) && __objt_conn(si_b->end)->xprt && __objt_conn(si_b->end)->xprt->rcv_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002264 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002265 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2266 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002267 (res->flags & CF_STREAMER_FAST)))) {
2268 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002269 }
2270
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002271 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002272 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002273
2274 /*
2275 * Now forward all shutdown requests between both sides of the buffer
2276 */
2277
2278 /*
2279 * FIXME: this is probably where we should produce error responses.
2280 */
2281
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002282 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002283 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002284 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002285 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002286 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002287
2288 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002289 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2290 channel_is_empty(res))) {
2291 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002292 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002293
2294 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002295 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2296 !res->analysers)
2297 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002298
2299 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002300 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2301 if (si_b->flags & SI_FL_NOHALF)
2302 si_b->flags |= SI_FL_NOLINGER;
2303 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002304 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002305
Willy Tarreau8f128b42014-11-28 15:07:47 +01002306 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002307 goto resync_stream_interface;
2308
Willy Tarreau8f128b42014-11-28 15:07:47 +01002309 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002310 goto resync_request;
2311
Willy Tarreau8f128b42014-11-28 15:07:47 +01002312 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002313 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002314
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002315 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002316 si_f->flags &= ~SI_FL_DONT_WAKE;
2317 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002318
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002319 /* This is needed only when debugging is enabled, to indicate
2320 * client-side or server-side close. Please note that in the unlikely
2321 * event where both sides would close at once, the sequence is reported
2322 * on the server side first.
2323 */
2324 if (unlikely((global.mode & MODE_DEBUG) &&
2325 (!(global.mode & MODE_QUIET) ||
2326 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002327 if (si_b->state == SI_ST_CLO &&
2328 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002329 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002330 s->uniq_id, s->be->id,
Willy Tarreau585744b2017-08-24 14:31:19 +02002331 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->handle.fd : -1,
2332 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002333 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002334 }
2335
Willy Tarreau8f128b42014-11-28 15:07:47 +01002336 if (si_f->state == SI_ST_CLO &&
2337 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002338 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002339 s->uniq_id, s->be->id,
Willy Tarreau585744b2017-08-24 14:31:19 +02002340 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->handle.fd : -1,
2341 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002342 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002343 }
2344 }
2345
Willy Tarreau8f128b42014-11-28 15:07:47 +01002346 if (likely((si_f->state != SI_ST_CLO) ||
2347 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002348
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002349 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002350 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002351
Willy Tarreau563cc372015-04-19 18:13:56 +02002352 if (si_f->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002353 si_update(si_f);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002354
Willy Tarreau563cc372015-04-19 18:13:56 +02002355 if (si_b->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002356 si_update(si_b);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002357
Willy Tarreau8f128b42014-11-28 15:07:47 +01002358 req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2359 res->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2360 si_f->prev_state = si_f->state;
2361 si_b->prev_state = si_b->state;
2362 si_f->flags &= ~(SI_FL_ERR|SI_FL_EXP);
2363 si_b->flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002364
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002365 /* Trick: if a request is being waiting for the server to respond,
2366 * and if we know the server can timeout, we don't want the timeout
2367 * to expire on the client side first, but we're still interested
2368 * in passing data from the client to the server (eg: POST). Thus,
2369 * we can cancel the client's request timeout if the server's
2370 * request timeout is set and the server has not yet sent a response.
2371 */
2372
Willy Tarreau8f128b42014-11-28 15:07:47 +01002373 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2374 (tick_isset(req->wex) || tick_isset(res->rex))) {
2375 req->flags |= CF_READ_NOEXP;
2376 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002377 }
2378
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002379 /* Reset pending events now */
2380 s->pending_events = 0;
2381
Willy Tarreau798f4322012-11-08 14:49:17 +01002382 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002383 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002384 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2385 tick_first(tick_first(req->rex, req->wex),
2386 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002387 if (!req->analysers)
2388 req->analyse_exp = TICK_ETERNITY;
2389
2390 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2391 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2392 req->analyse_exp = tick_add(now_ms, 5000);
2393
2394 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002395
Willy Tarreau8f128b42014-11-28 15:07:47 +01002396 if (si_f->exp)
2397 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002398
Willy Tarreau8f128b42014-11-28 15:07:47 +01002399 if (si_b->exp)
2400 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002401
2402#ifdef DEBUG_FULL
Willy Tarreau127334e2009-03-28 10:47:26 +01002403 fprintf(stderr,
2404 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2405 " 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 +01002406 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2407 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002408#endif
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002409
2410#ifdef DEBUG_DEV
2411 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002412 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002413 ABORT_NOW();
2414#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002415 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002416 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002417 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002418 }
2419
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002420 sess->fe->feconn--;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002421 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002422 s->be->beconn--;
Willy Tarreauaf7ad002010-08-31 15:39:26 +02002423 jobs--;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002424 if (sess->listener) {
2425 if (!(sess->listener->options & LI_O_UNLIMITED))
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002426 actconn--;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002427 sess->listener->nbconn--;
2428 if (sess->listener->state == LI_FULL)
2429 resume_listener(sess->listener);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002430
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002431 /* Dequeues all of the listeners waiting for a resource */
2432 if (!LIST_ISEMPTY(&global_listener_queue))
2433 dequeue_all_listeners(&global_listener_queue);
Willy Tarreau08ceb102011-07-24 22:58:00 +02002434
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002435 if (!LIST_ISEMPTY(&sess->fe->listener_queue) &&
2436 (!sess->fe->fe_sps_lim || freq_ctr_remain(&sess->fe->fe_sess_per_sec, sess->fe->fe_sps_lim, 0) > 0))
2437 dequeue_all_listeners(&sess->fe->listener_queue);
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002438 }
Willy Tarreau07687c12011-07-24 23:55:06 +02002439
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002440 if (unlikely((global.mode & MODE_DEBUG) &&
2441 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002442 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002443 s->uniq_id, s->be->id,
Willy Tarreau585744b2017-08-24 14:31:19 +02002444 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->handle.fd : -1,
2445 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002446 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002447 }
2448
2449 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002450 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002451
Willy Tarreaueee5b512015-04-03 23:46:31 +02002452 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002453 int n;
2454
Willy Tarreaueee5b512015-04-03 23:46:31 +02002455 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002456 if (n < 1 || n > 5)
2457 n = 0;
2458
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002459 if (sess->fe->mode == PR_MODE_HTTP) {
2460 sess->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002461 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002462 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002463 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002464 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002465 s->be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002466 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002467 }
2468
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002469 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002470 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002471 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002472 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002473 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002474 }
2475
Willy Tarreau87b09662015-04-03 00:22:06 +02002476 /* update time stats for this stream */
2477 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002478
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002479 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002480 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002481 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002482 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002483 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002484}
2485
Willy Tarreau87b09662015-04-03 00:22:06 +02002486/* Update the stream's backend and server time stats */
2487void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002488{
2489 int t_request;
2490 int t_queue;
2491 int t_connect;
2492 int t_data;
2493 int t_close;
2494 struct server *srv;
2495
2496 t_request = 0;
2497 t_queue = s->logs.t_queue;
2498 t_connect = s->logs.t_connect;
2499 t_close = s->logs.t_close;
2500 t_data = s->logs.t_data;
2501
2502 if (s->be->mode != PR_MODE_HTTP)
2503 t_data = t_connect;
2504
2505 if (t_connect < 0 || t_data < 0)
2506 return;
2507
2508 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2509 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2510
2511 t_data -= t_connect;
2512 t_connect -= t_queue;
2513 t_queue -= t_request;
2514
2515 srv = objt_server(s->target);
2516 if (srv) {
2517 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2518 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2519 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2520 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2521 }
2522 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2523 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2524 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2525 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
2526}
2527
Willy Tarreau7c669d72008-06-20 15:04:11 +02002528/*
2529 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002530 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002531 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002532 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002533 * server.
2534 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002535void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002536{
2537 if (sess->srv_conn == newsrv)
2538 return;
2539
2540 if (sess->srv_conn) {
2541 sess->srv_conn->served--;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002542 sess->srv_conn->proxy->served--;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002543 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2544 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002545 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002546 }
2547
2548 if (newsrv) {
2549 newsrv->served++;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002550 newsrv->proxy->served++;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002551 if (newsrv->proxy->lbprm.server_take_conn)
2552 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002553 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002554 }
2555}
2556
Willy Tarreau84455332009-03-15 22:34:05 +01002557/* Handle server-side errors for default protocols. It is called whenever a a
2558 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002559 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002560 * them. It's installed as ->srv_error for the server-side stream_interface.
2561 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002562void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002563{
2564 int err_type = si->err_type;
2565 int err = 0, fin = 0;
2566
2567 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002568 err = SF_ERR_CLICL;
2569 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002570 }
2571 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002572 err = SF_ERR_CLICL;
2573 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002574 }
2575 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002576 err = SF_ERR_SRVTO;
2577 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002578 }
2579 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002580 err = SF_ERR_SRVCL;
2581 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002582 }
2583 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002584 err = SF_ERR_SRVTO;
2585 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002586 }
2587 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002588 err = SF_ERR_SRVCL;
2589 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002590 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002591 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002592 err = SF_ERR_RESOURCE;
2593 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002594 }
Willy Tarreau84455332009-03-15 22:34:05 +01002595 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002596 err = SF_ERR_INTERNAL;
2597 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002598 }
2599
Willy Tarreaue7dff022015-04-03 01:14:29 +02002600 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002601 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002602 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002603 s->flags |= fin;
2604}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002605
Willy Tarreaue7dff022015-04-03 01:14:29 +02002606/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002607void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002608{
Willy Tarreau87b09662015-04-03 00:22:06 +02002609 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002610 return;
2611
Willy Tarreau87b09662015-04-03 00:22:06 +02002612 channel_shutw_now(&stream->req);
2613 channel_shutr_now(&stream->res);
2614 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002615 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002616 stream->flags |= why;
2617 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002618}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002619
Willy Tarreau8b22a712010-06-18 17:46:06 +02002620/************************************************************************/
2621/* All supported ACL keywords must be declared here. */
2622/************************************************************************/
2623
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002624/* 0=OK, <0=Alert, >0=Warning */
2625static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2626 struct proxy *px, struct act_rule *rule,
2627 char **err)
2628{
2629 struct action_kw *kw;
2630
2631 /* Check if the service name exists. */
2632 if (*(args[*cur_arg]) == 0) {
2633 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002634 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002635 }
2636
2637 /* lookup for keyword corresponding to a service. */
2638 kw = action_lookup(&service_keywords, args[*cur_arg]);
2639 if (!kw) {
2640 memprintf(err, "'%s' unknown service name.", args[1]);
2641 return ACT_RET_PRS_ERR;
2642 }
2643 (*cur_arg)++;
2644
2645 /* executes specific rule parser. */
2646 rule->kw = kw;
2647 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2648 return ACT_RET_PRS_ERR;
2649
2650 /* Register processing function. */
2651 rule->action_ptr = process_use_service;
2652 rule->action = ACT_CUSTOM;
2653
2654 return ACT_RET_PRS_OK;
2655}
2656
2657void service_keywords_register(struct action_kw_list *kw_list)
2658{
2659 LIST_ADDQ(&service_keywords, &kw_list->list);
2660}
2661
William Lallemand4c5b4d52016-11-21 08:51:11 +01002662
2663/* This function dumps a complete stream state onto the stream interface's
2664 * read buffer. The stream has to be set in strm. It returns 0 if the output
2665 * buffer is full and it needs to be called again, otherwise non-zero. It is
2666 * designed to be called from stats_dump_strm_to_buffer() below.
2667 */
2668static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2669{
2670 struct appctx *appctx = __objt_appctx(si->end);
2671 struct tm tm;
2672 extern const char *monthname[12];
2673 char pn[INET6_ADDRSTRLEN];
2674 struct connection *conn;
2675 struct appctx *tmpctx;
2676
2677 chunk_reset(&trash);
2678
2679 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2680 /* stream changed, no need to go any further */
2681 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
2682 if (bi_putchk(si_ic(si), &trash) == -1) {
2683 si_applet_cant_put(si);
2684 return 0;
2685 }
2686 appctx->ctx.sess.uid = 0;
2687 appctx->ctx.sess.section = 0;
2688 return 1;
2689 }
2690
2691 switch (appctx->ctx.sess.section) {
2692 case 0: /* main status of the stream */
2693 appctx->ctx.sess.uid = strm->uniq_id;
2694 appctx->ctx.sess.section = 1;
2695 /* fall through */
2696
2697 case 1:
2698 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2699 chunk_appendf(&trash,
2700 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2701 strm,
2702 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2703 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2704 strm->uniq_id,
2705 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2706
2707 conn = objt_conn(strm_orig(strm));
2708 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2709 case AF_INET:
2710 case AF_INET6:
2711 chunk_appendf(&trash, " source=%s:%d\n",
2712 pn, get_host_port(&conn->addr.from));
2713 break;
2714 case AF_UNIX:
2715 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2716 break;
2717 default:
2718 /* no more information to print right now */
2719 chunk_appendf(&trash, "\n");
2720 break;
2721 }
2722
2723 chunk_appendf(&trash,
2724 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2725 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2726
2727 chunk_appendf(&trash,
2728 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2729 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2730 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2731 strm_li(strm) ? strm_li(strm)->luid : 0);
2732
2733 if (conn)
2734 conn_get_to_addr(conn);
2735
2736 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2737 case AF_INET:
2738 case AF_INET6:
2739 chunk_appendf(&trash, " addr=%s:%d\n",
2740 pn, get_host_port(&conn->addr.to));
2741 break;
2742 case AF_UNIX:
2743 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2744 break;
2745 default:
2746 /* no more information to print right now */
2747 chunk_appendf(&trash, "\n");
2748 break;
2749 }
2750
2751 if (strm->be->cap & PR_CAP_BE)
2752 chunk_appendf(&trash,
2753 " backend=%s (id=%u mode=%s)",
2754 strm->be->id,
2755 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2756 else
2757 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2758
2759 conn = objt_conn(strm->si[1].end);
2760 if (conn)
2761 conn_get_from_addr(conn);
2762
2763 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2764 case AF_INET:
2765 case AF_INET6:
2766 chunk_appendf(&trash, " addr=%s:%d\n",
2767 pn, get_host_port(&conn->addr.from));
2768 break;
2769 case AF_UNIX:
2770 chunk_appendf(&trash, " addr=unix\n");
2771 break;
2772 default:
2773 /* no more information to print right now */
2774 chunk_appendf(&trash, "\n");
2775 break;
2776 }
2777
2778 if (strm->be->cap & PR_CAP_BE)
2779 chunk_appendf(&trash,
2780 " server=%s (id=%u)",
2781 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2782 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2783 else
2784 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2785
2786 if (conn)
2787 conn_get_to_addr(conn);
2788
2789 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2790 case AF_INET:
2791 case AF_INET6:
2792 chunk_appendf(&trash, " addr=%s:%d\n",
2793 pn, get_host_port(&conn->addr.to));
2794 break;
2795 case AF_UNIX:
2796 chunk_appendf(&trash, " addr=unix\n");
2797 break;
2798 default:
2799 /* no more information to print right now */
2800 chunk_appendf(&trash, "\n");
2801 break;
2802 }
2803
2804 chunk_appendf(&trash,
2805 " task=%p (state=0x%02x nice=%d calls=%d exp=%s%s",
2806 strm->task,
2807 strm->task->state,
2808 strm->task->nice, strm->task->calls,
2809 strm->task->expire ?
2810 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2811 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2812 TICKS_TO_MS(1000)) : "<NEVER>",
2813 task_in_rq(strm->task) ? ", running" : "");
2814
2815 chunk_appendf(&trash,
2816 " age=%s)\n",
2817 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2818
2819 if (strm->txn)
2820 chunk_appendf(&trash,
2821 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2822 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Christopher Fauleta73e59b2016-12-09 17:30:18 +01002823 http_msg_state_str(strm->txn->req.msg_state), http_msg_state_str(strm->txn->rsp.msg_state), !LIST_ISEMPTY(&strm->buffer_wait.list));
William Lallemand4c5b4d52016-11-21 08:51:11 +01002824
2825 chunk_appendf(&trash,
2826 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2827 &strm->si[0],
2828 si_state_str(strm->si[0].state),
2829 strm->si[0].flags,
2830 obj_type_name(strm->si[0].end),
2831 obj_base_ptr(strm->si[0].end),
2832 strm->si[0].exp ?
2833 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2834 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2835 TICKS_TO_MS(1000)) : "<NEVER>",
2836 strm->si[0].err_type);
2837
2838 chunk_appendf(&trash,
2839 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2840 &strm->si[1],
2841 si_state_str(strm->si[1].state),
2842 strm->si[1].flags,
2843 obj_type_name(strm->si[1].end),
2844 obj_base_ptr(strm->si[1].end),
2845 strm->si[1].exp ?
2846 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2847 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2848 TICKS_TO_MS(1000)) : "<NEVER>",
2849 strm->si[1].err_type);
2850
2851 if ((conn = objt_conn(strm->si[0].end)) != NULL) {
2852 chunk_appendf(&trash,
2853 " co0=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2854 conn,
2855 conn_get_ctrl_name(conn),
2856 conn_get_xprt_name(conn),
2857 conn_get_data_name(conn),
2858 obj_type_name(conn->target),
2859 obj_base_ptr(conn->target));
2860
2861 chunk_appendf(&trash,
2862 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2863 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002864 conn->handle.fd,
2865 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
2866 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache : 0,
2867 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].updated : 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002868 }
2869 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2870 chunk_appendf(&trash,
2871 " app0=%p st0=%d st1=%d st2=%d applet=%s\n",
2872 tmpctx,
2873 tmpctx->st0,
2874 tmpctx->st1,
2875 tmpctx->st2,
2876 tmpctx->applet->name);
2877 }
2878
2879 if ((conn = objt_conn(strm->si[1].end)) != NULL) {
2880 chunk_appendf(&trash,
2881 " co1=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2882 conn,
2883 conn_get_ctrl_name(conn),
2884 conn_get_xprt_name(conn),
2885 conn_get_data_name(conn),
2886 obj_type_name(conn->target),
2887 obj_base_ptr(conn->target));
2888
2889 chunk_appendf(&trash,
2890 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2891 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002892 conn->handle.fd,
2893 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
2894 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache : 0,
2895 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].updated : 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002896 }
2897 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
2898 chunk_appendf(&trash,
2899 " app1=%p st0=%d st1=%d st2=%d applet=%s\n",
2900 tmpctx,
2901 tmpctx->st0,
2902 tmpctx->st1,
2903 tmpctx->st2,
2904 tmpctx->applet->name);
2905 }
2906
2907 chunk_appendf(&trash,
2908 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2909 " an_exp=%s",
2910 &strm->req,
2911 strm->req.flags, strm->req.analysers,
2912 strm->req.pipe ? strm->req.pipe->data : 0,
2913 strm->req.to_forward, strm->req.total,
2914 strm->req.analyse_exp ?
2915 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
2916 TICKS_TO_MS(1000)) : "<NEVER>");
2917
2918 chunk_appendf(&trash,
2919 " rex=%s",
2920 strm->req.rex ?
2921 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
2922 TICKS_TO_MS(1000)) : "<NEVER>");
2923
2924 chunk_appendf(&trash,
2925 " wex=%s\n"
2926 " buf=%p data=%p o=%d p=%d req.next=%d i=%d size=%d\n",
2927 strm->req.wex ?
2928 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
2929 TICKS_TO_MS(1000)) : "<NEVER>",
2930 strm->req.buf,
2931 strm->req.buf->data, strm->req.buf->o,
2932 (int)(strm->req.buf->p - strm->req.buf->data),
2933 strm->txn ? strm->txn->req.next : 0, strm->req.buf->i,
2934 strm->req.buf->size);
2935
2936 chunk_appendf(&trash,
2937 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2938 " an_exp=%s",
2939 &strm->res,
2940 strm->res.flags, strm->res.analysers,
2941 strm->res.pipe ? strm->res.pipe->data : 0,
2942 strm->res.to_forward, strm->res.total,
2943 strm->res.analyse_exp ?
2944 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
2945 TICKS_TO_MS(1000)) : "<NEVER>");
2946
2947 chunk_appendf(&trash,
2948 " rex=%s",
2949 strm->res.rex ?
2950 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
2951 TICKS_TO_MS(1000)) : "<NEVER>");
2952
2953 chunk_appendf(&trash,
2954 " wex=%s\n"
2955 " buf=%p data=%p o=%d p=%d rsp.next=%d i=%d size=%d\n",
2956 strm->res.wex ?
2957 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
2958 TICKS_TO_MS(1000)) : "<NEVER>",
2959 strm->res.buf,
2960 strm->res.buf->data, strm->res.buf->o,
2961 (int)(strm->res.buf->p - strm->res.buf->data),
2962 strm->txn ? strm->txn->rsp.next : 0, strm->res.buf->i,
2963 strm->res.buf->size);
2964
2965 if (bi_putchk(si_ic(si), &trash) == -1) {
2966 si_applet_cant_put(si);
2967 return 0;
2968 }
2969
2970 /* use other states to dump the contents */
2971 }
2972 /* end of dump */
2973 appctx->ctx.sess.uid = 0;
2974 appctx->ctx.sess.section = 0;
2975 return 1;
2976}
2977
2978
2979static int cli_parse_show_sess(char **args, struct appctx *appctx, void *private)
2980{
William Lallemand4c5b4d52016-11-21 08:51:11 +01002981 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2982 return 1;
2983
2984 if (*args[2] && strcmp(args[2], "all") == 0)
2985 appctx->ctx.sess.target = (void *)-1;
2986 else if (*args[2])
2987 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
2988 else
2989 appctx->ctx.sess.target = NULL;
2990 appctx->ctx.sess.section = 0; /* start with stream status */
2991 appctx->ctx.sess.pos = 0;
2992
2993 return 0;
2994}
2995
2996/* This function dumps all streams' states onto the stream interface's
2997 * read buffer. It returns 0 if the output buffer is full and it needs
2998 * to be called again, otherwise non-zero. It is designed to be called
2999 * from stats_dump_sess_to_buffer() below.
3000 */
3001static int cli_io_handler_dump_sess(struct appctx *appctx)
3002{
3003 struct stream_interface *si = appctx->owner;
3004 struct connection *conn;
3005
3006 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3007 /* If we're forced to shut down, we might have to remove our
3008 * reference to the last stream being dumped.
3009 */
3010 if (appctx->st2 == STAT_ST_LIST) {
3011 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3012 LIST_DEL(&appctx->ctx.sess.bref.users);
3013 LIST_INIT(&appctx->ctx.sess.bref.users);
3014 }
3015 }
3016 return 1;
3017 }
3018
3019 chunk_reset(&trash);
3020
3021 switch (appctx->st2) {
3022 case STAT_ST_INIT:
3023 /* the function had not been called yet, let's prepare the
3024 * buffer for a response. We initialize the current stream
3025 * pointer to the first in the global list. When a target
3026 * stream is being destroyed, it is responsible for updating
3027 * this pointer. We know we have reached the end when this
3028 * pointer points back to the head of the streams list.
3029 */
3030 LIST_INIT(&appctx->ctx.sess.bref.users);
3031 appctx->ctx.sess.bref.ref = streams.n;
3032 appctx->st2 = STAT_ST_LIST;
3033 /* fall through */
3034
3035 case STAT_ST_LIST:
3036 /* first, let's detach the back-ref from a possible previous stream */
3037 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3038 LIST_DEL(&appctx->ctx.sess.bref.users);
3039 LIST_INIT(&appctx->ctx.sess.bref.users);
3040 }
3041
3042 /* and start from where we stopped */
3043 while (appctx->ctx.sess.bref.ref != &streams) {
3044 char pn[INET6_ADDRSTRLEN];
3045 struct stream *curr_strm;
3046
3047 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3048
3049 if (appctx->ctx.sess.target) {
3050 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3051 goto next_sess;
3052
3053 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3054 /* call the proper dump() function and return if we're missing space */
3055 if (!stats_dump_full_strm_to_buffer(si, curr_strm))
3056 return 0;
3057
3058 /* stream dump complete */
3059 LIST_DEL(&appctx->ctx.sess.bref.users);
3060 LIST_INIT(&appctx->ctx.sess.bref.users);
3061 if (appctx->ctx.sess.target != (void *)-1) {
3062 appctx->ctx.sess.target = NULL;
3063 break;
3064 }
3065 else
3066 goto next_sess;
3067 }
3068
3069 chunk_appendf(&trash,
3070 "%p: proto=%s",
3071 curr_strm,
3072 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3073
3074 conn = objt_conn(strm_orig(curr_strm));
3075 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3076 case AF_INET:
3077 case AF_INET6:
3078 chunk_appendf(&trash,
3079 " src=%s:%d fe=%s be=%s srv=%s",
3080 pn,
3081 get_host_port(&conn->addr.from),
3082 strm_fe(curr_strm)->id,
3083 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3084 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3085 );
3086 break;
3087 case AF_UNIX:
3088 chunk_appendf(&trash,
3089 " src=unix:%d fe=%s be=%s srv=%s",
3090 strm_li(curr_strm)->luid,
3091 strm_fe(curr_strm)->id,
3092 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3093 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3094 );
3095 break;
3096 }
3097
3098 chunk_appendf(&trash,
3099 " ts=%02x age=%s calls=%d",
3100 curr_strm->task->state,
3101 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3102 curr_strm->task->calls);
3103
3104 chunk_appendf(&trash,
3105 " rq[f=%06xh,i=%d,an=%02xh,rx=%s",
3106 curr_strm->req.flags,
3107 curr_strm->req.buf->i,
3108 curr_strm->req.analysers,
3109 curr_strm->req.rex ?
3110 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3111 TICKS_TO_MS(1000)) : "");
3112
3113 chunk_appendf(&trash,
3114 ",wx=%s",
3115 curr_strm->req.wex ?
3116 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3117 TICKS_TO_MS(1000)) : "");
3118
3119 chunk_appendf(&trash,
3120 ",ax=%s]",
3121 curr_strm->req.analyse_exp ?
3122 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3123 TICKS_TO_MS(1000)) : "");
3124
3125 chunk_appendf(&trash,
3126 " rp[f=%06xh,i=%d,an=%02xh,rx=%s",
3127 curr_strm->res.flags,
3128 curr_strm->res.buf->i,
3129 curr_strm->res.analysers,
3130 curr_strm->res.rex ?
3131 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3132 TICKS_TO_MS(1000)) : "");
3133
3134 chunk_appendf(&trash,
3135 ",wx=%s",
3136 curr_strm->res.wex ?
3137 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3138 TICKS_TO_MS(1000)) : "");
3139
3140 chunk_appendf(&trash,
3141 ",ax=%s]",
3142 curr_strm->res.analyse_exp ?
3143 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3144 TICKS_TO_MS(1000)) : "");
3145
3146 conn = objt_conn(curr_strm->si[0].end);
3147 chunk_appendf(&trash,
3148 " s0=[%d,%1xh,fd=%d,ex=%s]",
3149 curr_strm->si[0].state,
3150 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003151 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003152 curr_strm->si[0].exp ?
3153 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3154 TICKS_TO_MS(1000)) : "");
3155
3156 conn = objt_conn(curr_strm->si[1].end);
3157 chunk_appendf(&trash,
3158 " s1=[%d,%1xh,fd=%d,ex=%s]",
3159 curr_strm->si[1].state,
3160 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003161 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003162 curr_strm->si[1].exp ?
3163 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3164 TICKS_TO_MS(1000)) : "");
3165
3166 chunk_appendf(&trash,
3167 " exp=%s",
3168 curr_strm->task->expire ?
3169 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3170 TICKS_TO_MS(1000)) : "");
3171 if (task_in_rq(curr_strm->task))
3172 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3173
3174 chunk_appendf(&trash, "\n");
3175
3176 if (bi_putchk(si_ic(si), &trash) == -1) {
3177 /* let's try again later from this stream. We add ourselves into
3178 * this stream's users so that it can remove us upon termination.
3179 */
3180 si_applet_cant_put(si);
3181 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3182 return 0;
3183 }
3184
3185 next_sess:
3186 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3187 }
3188
3189 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3190 /* specified stream not found */
3191 if (appctx->ctx.sess.section > 0)
3192 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3193 else
3194 chunk_appendf(&trash, "Session not found.\n");
3195
3196 if (bi_putchk(si_ic(si), &trash) == -1) {
3197 si_applet_cant_put(si);
3198 return 0;
3199 }
3200
3201 appctx->ctx.sess.target = NULL;
3202 appctx->ctx.sess.uid = 0;
3203 return 1;
3204 }
3205
3206 appctx->st2 = STAT_ST_FIN;
3207 /* fall through */
3208
3209 default:
3210 appctx->st2 = STAT_ST_FIN;
3211 return 1;
3212 }
3213}
3214
3215static void cli_release_show_sess(struct appctx *appctx)
3216{
3217 if (appctx->st2 == STAT_ST_LIST) {
3218 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3219 LIST_DEL(&appctx->ctx.sess.bref.users);
3220 }
3221}
3222
Willy Tarreau61b65212016-11-24 11:09:25 +01003223/* Parses the "shutdown session" directive, it always returns 1 */
3224static int cli_parse_shutdown_session(char **args, struct appctx *appctx, void *private)
3225{
3226 struct stream *strm, *ptr;
3227
3228 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3229 return 1;
3230
3231 if (!*args[2]) {
3232 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003233 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003234 return 1;
3235 }
3236
3237 ptr = (void *)strtoul(args[2], NULL, 0);
3238
3239 /* first, look for the requested stream in the stream table */
3240 list_for_each_entry(strm, &streams, list) {
3241 if (strm == ptr)
3242 break;
3243 }
3244
3245 /* do we have the stream ? */
3246 if (strm != ptr) {
3247 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003248 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003249 return 1;
3250 }
3251
3252 stream_shutdown(strm, SF_ERR_KILLED);
3253 return 1;
3254}
3255
Willy Tarreau4e46b622016-11-23 16:50:48 +01003256/* Parses the "shutdown session server" directive, it always returns 1 */
3257static int cli_parse_shutdown_sessions_server(char **args, struct appctx *appctx, void *private)
3258{
3259 struct server *sv;
3260 struct stream *strm, *strm_bck;
3261
3262 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3263 return 1;
3264
3265 sv = cli_find_server(appctx, args[3]);
3266 if (!sv)
3267 return 1;
3268
3269 /* kill all the stream that are on this server */
3270 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3271 if (strm->srv_conn == sv)
3272 stream_shutdown(strm, SF_ERR_KILLED);
3273 return 1;
3274}
3275
William Lallemand4c5b4d52016-11-21 08:51:11 +01003276/* register cli keywords */
3277static struct cli_kw_list cli_kws = {{ },{
3278 { { "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 +01003279 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003280 { { "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 +01003281 {{},}
3282}};
3283
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003284/* main configuration keyword registration. */
3285static struct action_kw_list stream_tcp_keywords = { ILH, {
3286 { "use-service", stream_parse_use_service },
3287 { /* END */ }
3288}};
3289
3290static struct action_kw_list stream_http_keywords = { ILH, {
3291 { "use-service", stream_parse_use_service },
3292 { /* END */ }
3293}};
3294
Willy Tarreau8b22a712010-06-18 17:46:06 +02003295__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003296static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003297{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003298 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3299 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003300 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003301}
3302
Willy Tarreaubaaee002006-06-26 02:48:02 +02003303/*
3304 * Local variables:
3305 * c-indent-level: 8
3306 * c-basic-offset: 8
3307 * End:
3308 */