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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 Tarreau2542b532012-08-31 16:01:23 +0200157 LIST_INIT(&s->back_refs);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100158
159 LIST_INIT(&s->buffer_wait.list);
160 s->buffer_wait.target = s;
161 s->buffer_wait.wakeup_cb = (int (*)(void *))stream_res_wakeup;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200162
Willy Tarreaue7dff022015-04-03 01:14:29 +0200163 s->flags |= SF_INITIALIZED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200164 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200165
Willy Tarreau87787ac2017-08-28 16:22:54 +0200166 if ((t = task_new()) == NULL)
167 goto out_fail_alloc;
168
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200169 s->task = t;
Christopher Faulet9d810ca2016-12-08 22:33:52 +0100170 s->pending_events = 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200171 t->process = process_stream;
Willy Tarreau2542b532012-08-31 16:01:23 +0200172 t->context = s;
173 t->expire = TICK_ETERNITY;
Willy Tarreau87787ac2017-08-28 16:22:54 +0200174 if (sess->listener)
175 t->nice = sess->listener->nice;
Willy Tarreau2542b532012-08-31 16:01:23 +0200176
Willy Tarreau87b09662015-04-03 00:22:06 +0200177 /* Note: initially, the stream's backend points to the frontend.
Willy Tarreau2542b532012-08-31 16:01:23 +0200178 * This changes later when switching rules are executed or
179 * when the default backend is assigned.
180 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200181 s->be = sess->fe;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100182 s->req.buf = s->res.buf = NULL;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200183 s->req_cap = NULL;
184 s->res_cap = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200185
Willy Tarreauebcd4842015-06-19 11:59:02 +0200186 /* Initialise all the variables contexts even if not used.
187 * This permits to prune these contexts without errors.
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200188 */
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200189 vars_init(&s->vars_txn, SCOPE_TXN);
190 vars_init(&s->vars_reqres, SCOPE_REQ);
191
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200192 /* this part should be common with other protocols */
Willy Tarreau819d3322014-11-28 12:12:34 +0100193 si_reset(&s->si[0]);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200194 si_set_state(&s->si[0], SI_ST_EST);
Hongbo Longe39683c2017-03-10 18:41:51 +0100195 s->si[0].hcto = sess->fe->timeout.clientfin;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200196
Willy Tarreau1f52bb22015-04-04 14:28:46 +0200197 /* attach the incoming connection to the stream interface now. */
Willy Tarreauf2b98742015-04-05 01:30:42 +0200198 if (conn)
199 si_attach_conn(&s->si[0], conn);
Willy Tarreau470280e2015-04-05 01:33:13 +0200200 else if (appctx)
201 si_attach_appctx(&s->si[0], appctx);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200202
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200203 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200204 s->si[0].flags |= SI_FL_INDEP_STR;
205
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200206 /* pre-initialize the other side's stream interface to an INIT state. The
207 * callbacks will be initialized before attempting to connect.
208 */
Willy Tarreau819d3322014-11-28 12:12:34 +0100209 si_reset(&s->si[1]);
Hongbo Longe39683c2017-03-10 18:41:51 +0100210 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200211
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200212 if (likely(sess->fe->options2 & PR_O2_INDEPSTR))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200213 s->si[1].flags |= SI_FL_INDEP_STR;
214
Willy Tarreau87b09662015-04-03 00:22:06 +0200215 stream_init_srv_conn(s);
Willy Tarreau9b82d942016-12-05 00:26:31 +0100216 s->target = sess->listener ? sess->listener->default_target : NULL;
217
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200218 s->pend_pos = NULL;
219
220 /* init store persistence */
221 s->store_count = 0;
222
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100223 channel_init(&s->req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100224 s->req.flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau9b82d942016-12-05 00:26:31 +0100225 s->req.analysers = sess->listener ? sess->listener->analysers : 0;
Willy Tarreaud1769b82015-04-06 00:25:48 +0200226 channel_auto_connect(&s->req); /* don't wait to establish connection */
227 channel_auto_close(&s->req); /* let the producer forward close requests */
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200228
229 s->req.rto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100230 s->req.wto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100231 s->req.rex = TICK_ETERNITY;
232 s->req.wex = TICK_ETERNITY;
233 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200234
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100235 channel_init(&s->res);
Willy Tarreauef573c02014-11-28 14:17:09 +0100236 s->res.flags |= CF_ISRESP;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100237 s->res.analysers = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200238
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200239 if (sess->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100240 s->req.flags |= CF_NEVER_WAIT;
241 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200242 }
243
Willy Tarreauc8815ef2015-04-05 18:15:59 +0200244 s->res.wto = sess->fe->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100245 s->res.rto = TICK_ETERNITY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100246 s->res.rex = TICK_ETERNITY;
247 s->res.wex = TICK_ETERNITY;
248 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200249
Willy Tarreaueee5b512015-04-03 23:46:31 +0200250 s->txn = NULL;
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100251 s->hlua = NULL;
Thierry FOURNIER65f34c62015-02-16 20:11:43 +0100252
Christopher Faulet92d36382015-11-05 13:35:03 +0100253 if (flt_stream_init(s) < 0 || flt_stream_start(s) < 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200254 goto out_fail_accept;
255
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200256 /* finish initialization of the accepted file descriptor */
Willy Tarreauf2b98742015-04-05 01:30:42 +0200257 if (conn)
258 conn_data_want_recv(conn);
Willy Tarreau470280e2015-04-05 01:33:13 +0200259 else if (appctx)
Willy Tarreaufe127932015-04-21 19:23:39 +0200260 si_applet_want_get(&s->si[0]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200261
Willy Tarreaufb9f5842015-04-05 18:19:23 +0200262 if (sess->fe->accept && sess->fe->accept(s) < 0)
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200263 goto out_fail_accept;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200264
265 /* it is important not to call the wakeup function directly but to
266 * pass through task_wakeup(), because this one knows how to apply
Emeric Brun5f77fef2017-05-29 15:26:51 +0200267 * priorities to tasks. Using multi thread we must be sure that
268 * stream is fully initialized before calling task_wakeup. So
269 * the caller must handle the task_wakeup
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200270 */
Willy Tarreau02d86382015-04-05 12:00:52 +0200271 return s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200272
273 /* Error unrolling */
Willy Tarreauc5a7ff42015-04-05 11:52:08 +0200274 out_fail_accept:
Christopher Faulet92d36382015-11-05 13:35:03 +0100275 flt_stream_release(s, 0);
Willy Tarreau87787ac2017-08-28 16:22:54 +0200276 task_free(t);
277 out_fail_alloc:
Willy Tarreau3b246412014-11-25 17:10:33 +0100278 LIST_DEL(&s->list);
Willy Tarreau02a0c0e2015-04-04 18:08:21 +0200279 pool_free2(pool2_stream, s);
Willy Tarreau02d86382015-04-05 12:00:52 +0200280 return NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200281}
282
Willy Tarreaubaaee002006-06-26 02:48:02 +0200283/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200284 * frees the context associated to a stream. It must have been removed first.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200285 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200286static void stream_free(struct stream *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200287{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200288 struct session *sess = strm_sess(s);
289 struct proxy *fe = sess->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100290 struct bref *bref, *back;
Willy Tarreau76325482017-08-17 15:54:46 +0200291 struct connection *cli_conn = objt_conn(s->si[0].end);
Willy Tarreaua4cda672010-06-06 18:28:49 +0200292 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100293
Willy Tarreaubaaee002006-06-26 02:48:02 +0200294 if (s->pend_pos)
295 pendconn_free(s->pend_pos);
Willy Tarreau922a8062008-12-04 09:33:58 +0100296
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100297 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200298 if (s->flags & SF_CURR_SESS) {
299 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100300 objt_server(s->target)->cur_sess--;
Willy Tarreau1e62de62008-11-11 20:20:02 +0100301 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100302 if (may_dequeue_tasks(objt_server(s->target), s->be))
303 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100304 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100305
Willy Tarreau7c669d72008-06-20 15:04:11 +0200306 if (unlikely(s->srv_conn)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200307 /* the stream still has a reserved slot on a server, but
Willy Tarreau7c669d72008-06-20 15:04:11 +0200308 * it should normally be only the same as the one above,
309 * so this should not happen in fact.
310 */
311 sess_change_server(s, NULL);
312 }
313
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100314 if (s->req.pipe)
315 put_pipe(s->req.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100316
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100317 if (s->res.pipe)
318 put_pipe(s->res.pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100319
Willy Tarreaubf883e02014-11-25 21:10:35 +0100320 /* We may still be present in the buffer wait queue */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100321 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
322 LIST_DEL(&s->buffer_wait.list);
323 LIST_INIT(&s->buffer_wait.list);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100324 }
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100325 if (s->req.buf->size || s->res.buf->size) {
326 b_drop(&s->req.buf);
327 b_drop(&s->res.buf);
328 offer_buffers(NULL, tasks_run_queue + applets_active_queue);
329 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200330
Thierry FOURNIER2c8b54e2016-12-17 12:45:32 +0100331 hlua_ctx_destroy(s->hlua);
332 s->hlua = NULL;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200333 if (s->txn)
334 http_end_txn(s);
Willy Tarreau46023632010-01-07 22:51:47 +0100335
Willy Tarreau1e954912012-10-12 17:50:05 +0200336 /* ensure the client-side transport layer is destroyed */
Willy Tarreauf79c8172013-10-21 16:30:56 +0200337 if (cli_conn)
338 conn_force_close(cli_conn);
Willy Tarreau1e954912012-10-12 17:50:05 +0200339
Willy Tarreaua4cda672010-06-06 18:28:49 +0200340 for (i = 0; i < s->store_count; i++) {
341 if (!s->store[i].ts)
342 continue;
343 stksess_free(s->store[i].table, s->store[i].ts);
344 s->store[i].ts = NULL;
345 }
346
Willy Tarreaueee5b512015-04-03 23:46:31 +0200347 if (s->txn) {
348 pool_free2(pool2_hdr_idx, s->txn->hdr_idx.v);
349 pool_free2(pool2_http_txn, s->txn);
350 s->txn = NULL;
351 }
352
Christopher Fauletd7c91962015-04-30 11:48:27 +0200353 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100354 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200355
Willy Tarreau92fb9832007-10-16 17:34:28 +0200356 if (fe) {
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200357 pool_free2(fe->rsp_cap_pool, s->res_cap);
358 pool_free2(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200359 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100360
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200361 /* Cleanup all variable contexts. */
Willy Tarreau6204cd92016-03-10 16:33:04 +0100362 vars_prune(&s->vars_txn, s->sess, s);
363 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200364
Willy Tarreau87b09662015-04-03 00:22:06 +0200365 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200366
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100367 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100368 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200369 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100370 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100371 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100372 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200373 if (s->list.n != &streams)
374 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100375 bref->ref = s->list.n;
376 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100377 LIST_DEL(&s->list);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200378 si_release_endpoint(&s->si[1]);
379 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200380
381 /* FIXME: for now we have a 1:1 relation between stream and session so
382 * the stream must free the session.
383 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200384 pool_free2(pool2_stream, s);
Willy Tarreau11c36242015-04-04 15:54:03 +0200385 session_free(sess);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200386
387 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200388 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200389 pool_flush2(pool2_buffer);
Willy Tarreau63986c72015-04-03 22:55:33 +0200390 pool_flush2(pool2_http_txn);
Willy Tarreau34eb6712011-10-24 18:15:04 +0200391 pool_flush2(pool2_hdr_idx);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200392 pool_flush2(pool2_requri);
393 pool_flush2(pool2_capture);
Willy Tarreau87b09662015-04-03 00:22:06 +0200394 pool_flush2(pool2_stream);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200395 pool_flush2(pool2_session);
Willy Tarreau3a5e0602014-11-13 16:46:28 +0100396 pool_flush2(pool2_connection);
397 pool_flush2(pool2_pendconn);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200398 pool_flush2(fe->req_cap_pool);
399 pool_flush2(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200400 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200401}
402
Willy Tarreau656859d2014-11-25 19:46:36 +0100403
Willy Tarreau87b09662015-04-03 00:22:06 +0200404/* Allocates a work buffer for stream <s>. It is meant to be called inside
405 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200406 * to work fine, which is the response buffer so that an error message may be
407 * built and returned. Response buffers may be allocated from the reserve, this
408 * is critical to ensure that a response may always flow and will never block a
409 * server from releasing a connection. Returns 0 in case of failure, non-zero
410 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100411 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100412static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100413{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100414 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
415 LIST_DEL(&s->buffer_wait.list);
416 LIST_INIT(&s->buffer_wait.list);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100417 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100418
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200419 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100420 return 1;
421
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100422 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Willy Tarreau656859d2014-11-25 19:46:36 +0100423 return 0;
424}
425
426/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100427 * update() functions. It will try to wake up as many tasks/applets as the
428 * number of buffers that it releases. In practice, most often streams are
429 * blocked on a single buffer, so it makes sense to try to wake two up when two
430 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100431 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200432void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100433{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100434 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100435
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100436 if (s->req.buf->size && buffer_empty(s->req.buf)) {
437 offer = 1;
438 b_free(&s->req.buf);
439 }
440 if (s->res.buf->size && buffer_empty(s->res.buf)) {
441 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100442 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100443 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100444
Willy Tarreaubf883e02014-11-25 21:10:35 +0100445 /* if we're certain to have at least 1 buffer available, and there is
446 * someone waiting, we can wake up a waiter and offer them.
447 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100448 if (offer)
449 offer_buffers(s, tasks_run_queue + applets_active_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100450}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200451
452/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200453int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200454{
Willy Tarreau87b09662015-04-03 00:22:06 +0200455 LIST_INIT(&streams);
456 pool2_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
457 return pool2_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200458}
459
Willy Tarreau87b09662015-04-03 00:22:06 +0200460void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100461{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200462 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100463 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200464 void *ptr1,*ptr2;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100465 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100466
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100467 bytes = s->req.total - s->logs.bytes_in;
468 s->logs.bytes_in = s->req.total;
469 if (bytes) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200470 sess->fe->fe_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100471
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100472 s->be->be_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100473
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100474 if (objt_server(s->target))
475 objt_server(s->target)->counters.bytes_in += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200476
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200477 if (sess->listener && sess->listener->counters)
478 sess->listener->counters->bytes_in += bytes;
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200479
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100480 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200481 struct stkctr *stkctr = &s->stkctr[i];
482
483 if (!stkctr_entry(stkctr)) {
484 stkctr = &sess->stkctr[i];
485 if (!stkctr_entry(stkctr))
486 continue;
487 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200488
Emeric Brun57056f02015-06-15 18:29:57 +0200489 ptr1 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_CNT);
490 if (ptr1)
491 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200492
Emeric Brun57056f02015-06-15 18:29:57 +0200493 ptr2 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_RATE);
494 if (ptr2)
495 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200496 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Emeric Brun57056f02015-06-15 18:29:57 +0200497
498 /* If data was modified, we need to touch to re-schedule sync */
499 if (ptr1 || ptr2)
500 stktable_touch(stkctr->table, stkctr_entry(stkctr), 1);
Willy Tarreau30e71012007-11-26 20:15:35 +0100501 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100502 }
503
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100504 bytes = s->res.total - s->logs.bytes_out;
505 s->logs.bytes_out = s->res.total;
506 if (bytes) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200507 sess->fe->fe_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100508
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100509 s->be->be_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100510
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100511 if (objt_server(s->target))
512 objt_server(s->target)->counters.bytes_out += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200513
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200514 if (sess->listener && sess->listener->counters)
515 sess->listener->counters->bytes_out += bytes;
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200516
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100517 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200518 struct stkctr *stkctr = &s->stkctr[i];
519
520 if (!stkctr_entry(stkctr)) {
521 stkctr = &sess->stkctr[i];
522 if (!stkctr_entry(stkctr))
523 continue;
524 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200525
Emeric Brun57056f02015-06-15 18:29:57 +0200526 ptr1 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_CNT);
527 if (ptr1)
528 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200529
Emeric Brun57056f02015-06-15 18:29:57 +0200530 ptr2 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_RATE);
531 if (ptr2)
532 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200533 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Emeric Brun57056f02015-06-15 18:29:57 +0200534
535 /* If data was modified, we need to touch to re-schedule sync */
536 if (ptr1 || ptr2)
537 stktable_touch(stkctr->table, stkctr_entry(stkctr), 1);
Willy Tarreau30e71012007-11-26 20:15:35 +0100538 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100539 }
540}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200541
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100542/* This function is called with (si->state == SI_ST_CON) meaning that a
543 * connection was attempted and that the file descriptor is already allocated.
544 * We must check for establishment, error and abort. Possible output states
545 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
546 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200547 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100548 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200549static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100550{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100551 struct stream_interface *si = &s->si[1];
552 struct channel *req = &s->req;
553 struct channel *rep = &s->res;
Willy Tarreau350135c2016-11-17 12:05:13 +0100554 struct connection *srv_conn = __objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100555
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100556 /* If we got an error, or if nothing happened and the connection timed
557 * out, we must give up. The CER state handler will take care of retry
558 * attempts and error reports.
559 */
560 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800561 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100562 /* Some data were sent past the connection establishment,
563 * so we need to pretend we're established to log correctly
564 * and let later states handle the failure.
565 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100566 si->state = SI_ST_EST;
567 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100568 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100569 return 1;
570 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100571 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100572 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100573
Willy Tarreau350135c2016-11-17 12:05:13 +0100574 conn_force_close(srv_conn);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100575
576 if (si->err_type)
577 return 0;
578
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100579 if (si->flags & SI_FL_ERR)
580 si->err_type = SI_ET_CONN_ERR;
581 else
582 si->err_type = SI_ET_CONN_TO;
583 return 0;
584 }
585
586 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800587 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100588 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200589 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
590 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100591 s->be->options & PR_O_ABRT_CLOSE)))) {
592 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200593 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100594 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100595 if (s->srv_error)
596 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100597 return 1;
598 }
599
600 /* we need to wait a bit more if there was no activity either */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200601 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100602 return 1;
603
604 /* OK, this means that a connection succeeded. The caller will be
605 * responsible for handling the transition from CON to EST.
606 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100607 si->state = SI_ST_EST;
608 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100609 return 1;
610}
611
612/* This function is called with (si->state == SI_ST_CER) meaning that a
613 * previous connection attempt has failed and that the file descriptor
614 * has already been released. Possible causes include asynchronous error
615 * notification and time out. Possible output states are SI_ST_CLO when
616 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
617 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
618 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
619 * marked as in error state. It returns 0.
620 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200621static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100622{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100623 struct stream_interface *si = &s->si[1];
Willy Tarreau46d5b082017-07-26 20:13:37 +0200624 struct connection *conn = objt_conn(si->end);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100625
Willy Tarreau87b09662015-04-03 00:22:06 +0200626 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100627 if (objt_server(s->target)) {
628 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100629
Willy Tarreaue7dff022015-04-03 01:14:29 +0200630 if (s->flags & SF_CURR_SESS) {
631 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100632 objt_server(s->target)->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100633 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200634
635 if ((si->flags & SI_FL_ERR) &&
636 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
637 /* We tried to connect to a server which is configured
638 * with "verify required" and which doesn't have the
639 * "verifyhost" directive. The server presented a wrong
640 * certificate (a certificate for an unexpected name),
641 * which implies that we have used SNI in the handshake,
642 * and that the server doesn't have the associated cert
643 * and presented a default one.
644 *
645 * This is a serious enough issue not to retry. It's
646 * especially important because this wrong name might
647 * either be the result of a configuration error, and
648 * retrying will only hammer the server, or is caused
649 * by the use of a wrong SNI value, most likely
650 * provided by the client and we don't want to let the
651 * client provoke retries.
652 */
653 si->conn_retries = 0;
654 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100655 }
656
657 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200658 si->conn_retries--;
659 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100660 if (!si->err_type) {
661 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100662 }
663
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100664 if (objt_server(s->target))
665 objt_server(s->target)->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100666 s->be->be_counters.failed_conns++;
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100667 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100668 if (may_dequeue_tasks(objt_server(s->target), s->be))
669 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100670
671 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200672 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100673 s->req.flags |= CF_WRITE_ERROR;
674 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100675
676 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100677 if (s->srv_error)
678 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100679 return 0;
680 }
681
682 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700683 * retry on another server. By default this redispatch occurs on the
684 * last retry, but if configured we allow redispatches to occur on
685 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200686 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100687 * bit to ignore any persistence cookie. We won't count a retry nor a
688 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200689 * If the connection is not persistent, the balancing algorithm is not
690 * determinist (round robin) and there is more than one active server,
691 * we accept to perform an immediate redispatch without waiting since
692 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100693 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200694 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700695 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200696 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100697 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700698 ((s->be->conn_retries - si->conn_retries) %
699 s->be->redispatch_after == 0)) ||
700 ((s->be->redispatch_after < 0) &&
701 ((s->be->conn_retries - si->conn_retries) %
702 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200703 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700704 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100705 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100706 if (may_dequeue_tasks(objt_server(s->target), s->be))
707 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100708
Willy Tarreaue7dff022015-04-03 01:14:29 +0200709 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100710 si->state = SI_ST_REQ;
711 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100712 if (objt_server(s->target))
713 objt_server(s->target)->counters.retries++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100714 s->be->be_counters.retries++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100715 si->state = SI_ST_ASS;
716 }
717
718 if (si->flags & SI_FL_ERR) {
719 /* The error was an asynchronous connection error, and we will
720 * likely have to retry connecting to the same server, most
721 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200722 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100723 */
724
Willy Tarreaub0290662014-06-13 17:04:44 +0200725 int delay = 1000;
726
727 if (s->be->timeout.connect && s->be->timeout.connect < delay)
728 delay = s->be->timeout.connect;
729
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100730 if (!si->err_type)
731 si->err_type = SI_ET_CONN_ERR;
732
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200733 /* only wait when we're retrying on the same server */
734 if (si->state == SI_ST_ASS ||
735 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
736 (s->be->srv_act <= 1)) {
737 si->state = SI_ST_TAR;
738 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
739 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100740 return 0;
741 }
742 return 0;
743}
744
745/*
746 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200747 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200748 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100749 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200750static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100751{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100752 struct stream_interface *si = &s->si[1];
753 struct channel *req = &s->req;
754 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100755
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100756 /* First, centralize the timers information */
757 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
758 si->exp = TICK_ETERNITY;
759
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100760 if (objt_server(s->target))
761 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100762
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100763 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100764 /* if the user wants to log as soon as possible, without counting
765 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200766 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100767 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100768 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100769 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100770 }
771 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100772 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100773 }
774
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100775 if (!(s->flags & SF_TUNNEL)) {
776 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100777
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100778 /* Be sure to filter response headers if the backend is an HTTP proxy
779 * and if there are filters attached to the stream. */
780 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
781 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
782 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100783
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200784 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200785 if (req->flags & CF_WAKE_CONNECT) {
786 req->flags |= CF_WAKE_ONCE;
787 req->flags &= ~CF_WAKE_CONNECT;
788 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200789 if (objt_conn(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200790 /* real connections have timeouts */
791 req->wto = s->be->timeout.server;
792 rep->rto = s->be->timeout.server;
793 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100794 req->wex = TICK_ETERNITY;
795}
796
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700797/* Check if the connection request is in such a state that it can be aborted. */
798static int check_req_may_abort(struct channel *req, struct stream *s)
799{
800 return ((req->flags & (CF_READ_ERROR)) ||
801 ((req->flags & CF_SHUTW_NOW) && /* empty and client aborted */
802 (channel_is_empty(req) || s->be->options & PR_O_ABRT_CLOSE)));
803}
804
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100805/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
806 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100807 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
808 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
809 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100810 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200811static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100812{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100813 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100814 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100815 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100816
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100817 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 +0100818 now_ms, __FUNCTION__,
819 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400820 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100821 req->rex, s->res.wex,
822 req->flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -0400823 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 +0100824
825 if (si->state == SI_ST_ASS) {
826 /* Server assigned to connection request, we have to try to connect now */
827 int conn_err;
828
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700829 /* Before we try to initiate the connection, see if the
830 * request may be aborted instead.
831 */
832 if (check_req_may_abort(req, s)) {
833 si->err_type |= SI_ET_CONN_ABRT;
834 goto abort_connection;
835 }
836
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100837 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100838 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100839
Willy Tarreaue7dff022015-04-03 01:14:29 +0200840 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100841 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100842 if (srv)
843 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500844 if (srv)
845 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100846 return;
847 }
848
849 /* We have received a synchronous error. We might have to
850 * abort, retry immediately or redispatch.
851 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200852 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100853 if (!si->err_type) {
854 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100855 }
856
Willy Tarreau827aee92011-03-10 16:55:02 +0100857 if (srv)
858 srv_inc_sess_ctr(srv);
859 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500860 srv_set_sess_last(srv);
861 if (srv)
Willy Tarreau827aee92011-03-10 16:55:02 +0100862 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100863 s->be->be_counters.failed_conns++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100864
Willy Tarreau87b09662015-04-03 00:22:06 +0200865 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100866 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100867 if (may_dequeue_tasks(srv, s->be))
868 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100869
870 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200871 si_shutr(si);
872 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100873 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100874
875 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
876
Willy Tarreau87b09662015-04-03 00:22:06 +0200877 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100878 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100879 if (s->srv_error)
880 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100881 return;
882 }
883
884 /* We are facing a retryable error, but we don't want to run a
885 * turn-around now, as the problem is likely a source port
886 * allocation problem, so we want to retry now.
887 */
888 si->state = SI_ST_CER;
889 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100890 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100891 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
892 return;
893 }
894 else if (si->state == SI_ST_QUE) {
895 /* connection request was queued, check for any update */
896 if (!s->pend_pos) {
897 /* The connection is not in the queue anymore. Either
898 * we have a server connection slot available and we
899 * go directly to the assigned state, or we need to
900 * load-balance first and go to the INI state.
901 */
902 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200903 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100904 si->state = SI_ST_REQ;
905 else {
906 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
907 si->state = SI_ST_ASS;
908 }
909 return;
910 }
911
912 /* Connection request still in queue... */
913 if (si->flags & SI_FL_EXP) {
914 /* ... and timeout expired */
915 si->exp = TICK_ETERNITY;
916 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau827aee92011-03-10 16:55:02 +0100917 if (srv)
918 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100919 s->be->be_counters.failed_conns++;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200920 si_shutr(si);
921 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100922 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100923 if (!si->err_type)
924 si->err_type = SI_ET_QUEUE_TO;
925 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100926 if (s->srv_error)
927 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100928 return;
929 }
930
931 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700932 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100933 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100934 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700935 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100936 }
937
938 /* Nothing changed */
939 return;
940 }
941 else if (si->state == SI_ST_TAR) {
942 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700943 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100944 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700945 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100946 }
947
948 if (!(si->flags & SI_FL_EXP))
949 return; /* still in turn-around */
950
951 si->exp = TICK_ETERNITY;
952
Willy Tarreau87b09662015-04-03 00:22:06 +0200953 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100954 * marked "assigned".
955 * FIXME: Should we force a redispatch attempt when the server is down ?
956 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200957 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100958 si->state = SI_ST_ASS;
959 else
960 si->state = SI_ST_REQ;
961 return;
962 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700963 return;
964
965abort_connection:
966 /* give up */
967 si->exp = TICK_ETERNITY;
968 si_shutr(si);
969 si_shutw(si);
970 si->state = SI_ST_CLO;
971 if (s->srv_error)
972 s->srv_error(s, si);
973 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100974}
975
Willy Tarreau87b09662015-04-03 00:22:06 +0200976/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +0900977 * also counts a failed request if the server state has not reached the request
978 * stage.
979 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200980static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +0900981{
Willy Tarreaue7dff022015-04-03 01:14:29 +0200982 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +0900983 if (s->si[1].state < SI_ST_REQ) {
984
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200985 strm_fe(s)->fe_counters.failed_req++;
Willy Tarreau2c1068c2015-09-23 12:21:21 +0200986 if (strm_li(s) && strm_li(s)->counters)
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200987 strm_li(s)->counters->failed_req++;
Simon Hormandec5be42011-06-08 09:19:07 +0900988
Willy Tarreaue7dff022015-04-03 01:14:29 +0200989 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +0900990 }
991 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200992 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +0900993 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200994 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +0900995 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200996 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +0900997 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200998 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +0900999 }
1000}
1001
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001002/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001003 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1004 * a real connection to a server, indicating that a server has been assigned,
1005 * or SI_ST_EST for a successful connection to an applet. It may also return
1006 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001007 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001008static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001009{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001010 struct stream_interface *si = &s->si[1];
1011
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001012 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 +01001013 now_ms, __FUNCTION__,
1014 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001015 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001016 s->req.rex, s->res.wex,
1017 s->req.flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -04001018 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 +01001019
1020 if (si->state != SI_ST_REQ)
1021 return;
1022
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001023 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1024 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001025 struct appctx *appctx = objt_appctx(si->end);
1026
1027 if (!appctx || appctx->applet != __objt_applet(s->target))
1028 appctx = stream_int_register_handler(si, objt_applet(s->target));
1029
1030 if (!appctx) {
1031 /* No more memory, let's immediately abort. Force the
1032 * error code to ignore the ERR_LOCAL which is not a
1033 * real error.
1034 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001035 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001036
1037 si_shutr(si);
1038 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001039 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001040 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001041 si->state = SI_ST_CLO;
1042 if (s->srv_error)
1043 s->srv_error(s, si);
1044 return;
1045 }
1046
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001047 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001048 si->state = SI_ST_EST;
1049 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001050 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001051 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001052 return;
1053 }
1054
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001055 /* Try to assign a server */
1056 if (srv_redispatch_connect(s) != 0) {
1057 /* We did not get a server. Either we queued the
1058 * connection request, or we encountered an error.
1059 */
1060 if (si->state == SI_ST_QUE)
1061 return;
1062
1063 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001064 si_shutr(si);
1065 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001066 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001067 if (!si->err_type)
1068 si->err_type = SI_ET_CONN_OTHER;
1069 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001070 if (s->srv_error)
1071 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001072 return;
1073 }
1074
1075 /* The server is assigned */
1076 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1077 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001078 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001079}
1080
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001081/* This function parses the use-service action ruleset. It executes
1082 * the associated ACL and set an applet as a stream or txn final node.
1083 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1084 * consistent state. It returns ACT_RET_STOP in succes case because
1085 * use-service must be a terminal action. Returns ACT_RET_YIELD
1086 * if the initialisation function require more data.
1087 */
1088enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1089 struct session *sess, struct stream *s, int flags)
1090
1091{
1092 struct appctx *appctx;
1093
1094 /* Initialises the applet if it is required. */
1095 if (flags & ACT_FLAG_FIRST) {
1096 /* Register applet. this function schedules the applet. */
1097 s->target = &rule->applet.obj_type;
1098 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1099 return ACT_RET_ERR;
1100
1101 /* Initialise the context. */
1102 appctx = si_appctx(&s->si[1]);
1103 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1104 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001105
1106 /* enable the minimally required analyzers in case of HTTP
1107 * keep-alive to properly handle keep-alive and compression
1108 * on the HTTP response.
1109 */
1110 if (rule->from == ACT_F_HTTP_REQ) {
1111 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1112 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1113 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001114 }
1115 else
1116 appctx = si_appctx(&s->si[1]);
1117
1118 /* Stops the applet sheduling, in case of the init function miss
1119 * some data.
1120 */
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001121 si_applet_stop_get(&s->si[1]);
1122
1123 /* Call initialisation. */
1124 if (rule->applet.init)
1125 switch (rule->applet.init(appctx, px, s)) {
1126 case 0: return ACT_RET_ERR;
1127 case 1: break;
1128 default: return ACT_RET_YIELD;
1129 }
1130
1131 /* Now we can schedule the applet. */
1132 si_applet_cant_get(&s->si[1]);
1133 appctx_wakeup(appctx);
1134
1135 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
1136 sess->fe->fe_counters.intercepted_req++;
1137
1138 /* The flag SF_ASSIGNED prevent from server assignment. */
1139 s->flags |= SF_ASSIGNED;
1140
1141 return ACT_RET_STOP;
1142}
1143
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001144/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001145 * if appropriate. The default_backend rule is also considered, then the
1146 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001147 * It returns 1 if the processing can continue on next analysers, or zero if it
1148 * either needs more data or wants to immediately abort the request.
1149 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001150static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001151{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001152 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001153 struct session *sess = s->sess;
1154 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001155
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001156 req->analysers &= ~an_bit;
1157 req->analyse_exp = TICK_ETERNITY;
1158
Willy Tarreau87b09662015-04-03 00:22:06 +02001159 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 +02001160 now_ms, __FUNCTION__,
1161 s,
1162 req,
1163 req->rex, req->wex,
1164 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001165 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001166 req->analysers);
1167
1168 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001169 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001170 struct switching_rule *rule;
1171
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001172 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001173 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001174
Willy Tarreauf51658d2014-04-23 01:21:56 +02001175 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001176 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001177 ret = acl_pass(ret);
1178 if (rule->cond->pol == ACL_COND_UNLESS)
1179 ret = !ret;
1180 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001181
1182 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001183 /* If the backend name is dynamic, try to resolve the name.
1184 * If we can't resolve the name, or if any error occurs, break
1185 * the loop and fallback to the default backend.
1186 */
1187 struct proxy *backend;
1188
1189 if (rule->dynamic) {
1190 struct chunk *tmp = get_trash_chunk();
1191 if (!build_logline(s, tmp->str, tmp->size, &rule->be.expr))
1192 break;
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001193 backend = proxy_be_by_name(tmp->str);
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001194 if (!backend)
1195 break;
1196 }
1197 else
1198 backend = rule->be.backend;
1199
Willy Tarreau87b09662015-04-03 00:22:06 +02001200 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001201 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001202 break;
1203 }
1204 }
1205
1206 /* To ensure correct connection accounting on the backend, we
1207 * have to assign one if it was not set (eg: a listen). This
1208 * measure also takes care of correctly setting the default
1209 * backend if any.
1210 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001211 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001212 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001213 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001214 }
1215
Willy Tarreaufb356202010-08-03 14:02:05 +02001216 /* 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 +02001217 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001218 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1219 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001220 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001221 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001222
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001223 /* 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 +02001224 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001225 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001226 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001227 int ret = 1;
1228
1229 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001230 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 +01001231 ret = acl_pass(ret);
1232 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1233 ret = !ret;
1234 }
1235
1236 if (ret) {
1237 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001238 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001239 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001240 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001241 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001242 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001243 break;
1244 }
1245 }
1246
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001247 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001248
1249 sw_failed:
1250 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001251 channel_abort(&s->req);
1252 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001253
Willy Tarreaue7dff022015-04-03 01:14:29 +02001254 if (!(s->flags & SF_ERR_MASK))
1255 s->flags |= SF_ERR_RESOURCE;
1256 if (!(s->flags & SF_FINST_MASK))
1257 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001258
Willy Tarreaueee5b512015-04-03 23:46:31 +02001259 if (s->txn)
1260 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001261 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001262 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001263 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001264}
1265
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001266/* This stream analyser works on a request. It applies all use-server rules on
1267 * it then returns 1. The data must already be present in the buffer otherwise
1268 * they won't match. It always returns 1.
1269 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001270static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001271{
1272 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001273 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001274 struct server_rule *rule;
1275
Willy Tarreau87b09662015-04-03 00:22:06 +02001276 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 +02001277 now_ms, __FUNCTION__,
1278 s,
1279 req,
1280 req->rex, req->wex,
1281 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001282 req->buf->i + req->buf->o,
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001283 req->analysers);
1284
Willy Tarreaue7dff022015-04-03 01:14:29 +02001285 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001286 list_for_each_entry(rule, &px->server_rules, list) {
1287 int ret;
1288
Willy Tarreau192252e2015-04-04 01:47:55 +02001289 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001290 ret = acl_pass(ret);
1291 if (rule->cond->pol == ACL_COND_UNLESS)
1292 ret = !ret;
1293
1294 if (ret) {
1295 struct server *srv = rule->srv.ptr;
1296
Emeric Brun52a91d32017-08-31 14:41:55 +02001297 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001298 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001299 (s->flags & SF_FORCE_PRST)) {
1300 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001301 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001302 break;
1303 }
1304 /* if the server is not UP, let's go on with next rules
1305 * just in case another one is suited.
1306 */
1307 }
1308 }
1309 }
1310
1311 req->analysers &= ~an_bit;
1312 req->analyse_exp = TICK_ETERNITY;
1313 return 1;
1314}
1315
Emeric Brun1d33b292010-01-04 15:47:17 +01001316/* This stream analyser works on a request. It applies all sticking rules on
1317 * it then returns 1. The data must already be present in the buffer otherwise
1318 * they won't match. It always returns 1.
1319 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001320static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001321{
1322 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001323 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001324 struct sticking_rule *rule;
1325
Willy Tarreau87b09662015-04-03 00:22:06 +02001326 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 +01001327 now_ms, __FUNCTION__,
1328 s,
1329 req,
1330 req->rex, req->wex,
1331 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001332 req->buf->i,
Emeric Brun1d33b292010-01-04 15:47:17 +01001333 req->analysers);
1334
1335 list_for_each_entry(rule, &px->sticking_rules, list) {
1336 int ret = 1 ;
1337 int i;
1338
Willy Tarreau9667a802013-12-09 12:52:13 +01001339 /* Only the first stick store-request of each table is applied
1340 * and other ones are ignored. The purpose is to allow complex
1341 * configurations which look for multiple entries by decreasing
1342 * order of precision and to stop at the first which matches.
1343 * An example could be a store of the IP address from an HTTP
1344 * header first, then from the source if not found.
1345 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001346 for (i = 0; i < s->store_count; i++) {
1347 if (rule->table.t == s->store[i].table)
1348 break;
1349 }
1350
1351 if (i != s->store_count)
1352 continue;
1353
1354 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001355 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001356 ret = acl_pass(ret);
1357 if (rule->cond->pol == ACL_COND_UNLESS)
1358 ret = !ret;
1359 }
1360
1361 if (ret) {
1362 struct stktable_key *key;
1363
Willy Tarreau192252e2015-04-04 01:47:55 +02001364 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 +01001365 if (!key)
1366 continue;
1367
1368 if (rule->flags & STK_IS_MATCH) {
1369 struct stksess *ts;
1370
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001371 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001372 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001373 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001374 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001375
1376 /* srv found in table */
Willy Tarreau13c29de2010-06-06 16:40:39 +02001377 ptr = stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
1378 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Emeric Brun1d33b292010-01-04 15:47:17 +01001379 if (node) {
1380 struct server *srv;
1381
1382 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001383 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001384 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001385 (s->flags & SF_FORCE_PRST)) {
1386 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001387 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001388 }
1389 }
1390 }
Emeric Brun85e77c72010-09-23 18:16:52 +02001391 stktable_touch(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001392 }
1393 }
1394 if (rule->flags & STK_IS_STORE) {
1395 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1396 struct stksess *ts;
1397
1398 ts = stksess_new(rule->table.t, key);
1399 if (ts) {
1400 s->store[s->store_count].table = rule->table.t;
1401 s->store[s->store_count++].ts = ts;
1402 }
1403 }
1404 }
1405 }
1406 }
1407
1408 req->analysers &= ~an_bit;
1409 req->analyse_exp = TICK_ETERNITY;
1410 return 1;
1411}
1412
1413/* This stream analyser works on a response. It applies all store rules on it
1414 * then returns 1. The data must already be present in the buffer otherwise
1415 * they won't match. It always returns 1.
1416 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001417static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001418{
1419 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001420 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001421 struct sticking_rule *rule;
1422 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001423 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001424
Willy Tarreau87b09662015-04-03 00:22:06 +02001425 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 +01001426 now_ms, __FUNCTION__,
1427 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001428 rep,
1429 rep->rex, rep->wex,
1430 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001431 rep->buf->i,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001432 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001433
1434 list_for_each_entry(rule, &px->storersp_rules, list) {
1435 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001436
Willy Tarreau9667a802013-12-09 12:52:13 +01001437 /* Only the first stick store-response of each table is applied
1438 * and other ones are ignored. The purpose is to allow complex
1439 * configurations which look for multiple entries by decreasing
1440 * order of precision and to stop at the first which matches.
1441 * An example could be a store of a set-cookie value, with a
1442 * fallback to a parameter found in a 302 redirect.
1443 *
1444 * The store-response rules are not allowed to override the
1445 * store-request rules for the same table, but they may coexist.
1446 * Thus we can have up to one store-request entry and one store-
1447 * response entry for the same table at any time.
1448 */
1449 for (i = nbreq; i < s->store_count; i++) {
1450 if (rule->table.t == s->store[i].table)
1451 break;
1452 }
1453
1454 /* skip existing entries for this table */
1455 if (i < s->store_count)
1456 continue;
1457
Emeric Brun1d33b292010-01-04 15:47:17 +01001458 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001459 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001460 ret = acl_pass(ret);
1461 if (rule->cond->pol == ACL_COND_UNLESS)
1462 ret = !ret;
1463 }
1464
1465 if (ret) {
1466 struct stktable_key *key;
1467
Willy Tarreau192252e2015-04-04 01:47:55 +02001468 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 +01001469 if (!key)
1470 continue;
1471
Willy Tarreau37e340c2013-12-06 23:05:21 +01001472 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001473 struct stksess *ts;
1474
1475 ts = stksess_new(rule->table.t, key);
1476 if (ts) {
1477 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001478 s->store[s->store_count++].ts = ts;
1479 }
1480 }
1481 }
1482 }
1483
1484 /* process store request and store response */
1485 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001486 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001487 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001488
Willy Tarreauc93cd162014-05-13 15:54:22 +02001489 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001490 stksess_free(s->store[i].table, s->store[i].ts);
1491 s->store[i].ts = NULL;
1492 continue;
1493 }
1494
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001495 ts = stktable_lookup(s->store[i].table, s->store[i].ts);
1496 if (ts) {
1497 /* the entry already existed, we can free ours */
Emeric Brun85e77c72010-09-23 18:16:52 +02001498 stktable_touch(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001499 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001500 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001501 else
Emeric Brun85e77c72010-09-23 18:16:52 +02001502 ts = stktable_store(s->store[i].table, s->store[i].ts, 1);
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001503
1504 s->store[i].ts = NULL;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001505 ptr = stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001506 stktable_data_cast(ptr, server_id) = objt_server(s->target)->puid;
Emeric Brun1d33b292010-01-04 15:47:17 +01001507 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001508 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001509
1510 rep->analysers &= ~an_bit;
1511 rep->analyse_exp = TICK_ETERNITY;
1512 return 1;
1513}
1514
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001515/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001516 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001517 */
1518#define UPDATE_ANALYSERS(real, list, back, flag) { \
1519 list = (((list) & ~(flag)) | ~(back)) & (real); \
1520 back = real; \
1521 if (!(list)) \
1522 break; \
1523 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1524 continue; \
1525}
1526
Christopher Fauleta9215b72016-05-11 17:06:28 +02001527/* These 2 following macros call an analayzer for the specified channel if the
1528 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001529 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001530 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001531 * AN_REQ/RES_HTTP_XFER_BODY) */
1532#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1533 { \
1534 if ((list) & (flag)) { \
1535 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001536 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001537 break; \
1538 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1539 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001540 if (!flt_post_analyze((strm), (chn), (flag))) \
1541 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001542 } \
1543 else { \
1544 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1545 break; \
1546 } \
1547 UPDATE_ANALYSERS((chn)->analysers, (list), \
1548 (back), (flag)); \
1549 } \
1550 }
1551
1552#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1553 { \
1554 if ((list) & (flag)) { \
1555 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1556 break; \
1557 UPDATE_ANALYSERS((chn)->analysers, (list), \
1558 (back), (flag)); \
1559 } \
1560 }
1561
Willy Tarreau87b09662015-04-03 00:22:06 +02001562/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001563 * then puts it back to the wait queue in a clean state, or cleans up its
1564 * resources if it must be deleted. Returns in <next> the date the task wants
1565 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1566 * nothing too many times, the request and response buffers flags are monitored
1567 * and each function is called only if at least another function has changed at
1568 * least one flag it is interested in.
1569 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001570struct task *process_stream(struct task *t)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001571{
Willy Tarreau827aee92011-03-10 16:55:02 +01001572 struct server *srv;
Willy Tarreau87b09662015-04-03 00:22:06 +02001573 struct stream *s = t->context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001574 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001575 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001576 unsigned int rq_prod_last, rq_cons_last;
1577 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001578 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001579 struct channel *req, *res;
1580 struct stream_interface *si_f, *si_b;
1581
1582 req = &s->req;
1583 res = &s->res;
1584
1585 si_f = &s->si[0];
1586 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001587
1588 //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 +01001589 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001590
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001591 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001592 if (s->txn)
1593 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001594
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001595 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001596 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1597 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001598
1599 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001600 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1601 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001602
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001603 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001604 si_f->flags |= SI_FL_DONT_WAKE;
1605 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001606
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001607 /* update pending events */
1608 s->pending_events |= (t->state & TASK_WOKEN_ANY);
1609
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001610 /* 1a: Check for low level timeouts if needed. We just set a flag on
1611 * stream interfaces when their timeouts have expired.
1612 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001613 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001614 stream_int_check_timeouts(si_f);
1615 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001616
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001617 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001618 * for future reads or writes. Note: this will also concern upper layers
1619 * but we do not touch any other flag. We must be careful and correctly
1620 * detect state changes when calling them.
1621 */
1622
Willy Tarreau8f128b42014-11-28 15:07:47 +01001623 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001624
Willy Tarreau8f128b42014-11-28 15:07:47 +01001625 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1626 si_b->flags |= SI_FL_NOLINGER;
1627 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001628 }
1629
Willy Tarreau8f128b42014-11-28 15:07:47 +01001630 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1631 if (si_f->flags & SI_FL_NOHALF)
1632 si_f->flags |= SI_FL_NOLINGER;
1633 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001634 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001635
Willy Tarreau8f128b42014-11-28 15:07:47 +01001636 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001637
Willy Tarreau8f128b42014-11-28 15:07:47 +01001638 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1639 si_f->flags |= SI_FL_NOLINGER;
1640 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001641 }
1642
Willy Tarreau8f128b42014-11-28 15:07:47 +01001643 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1644 if (si_b->flags & SI_FL_NOHALF)
1645 si_b->flags |= SI_FL_NOLINGER;
1646 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001647 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001648
Christopher Fauleta00d8172016-11-10 14:58:05 +01001649 if (HAS_FILTERS(s))
1650 flt_stream_check_timeouts(s);
1651
Willy Tarreau798f4322012-11-08 14:49:17 +01001652 /* Once in a while we're woken up because the task expires. But
1653 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001654 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001655 * timeout needs to be refreshed.
1656 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001657 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001658 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
1659 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001660 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001661 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001662 si_f->flags &= ~SI_FL_DONT_WAKE;
1663 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001664 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001665 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001666 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001667
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001668 /* below we may emit error messages so we have to ensure that we have
1669 * our buffers properly allocated.
1670 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001671 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001672 /* No buffer available, we've been subscribed to the list of
1673 * buffer waiters, let's wait for our turn.
1674 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001675 si_f->flags &= ~SI_FL_DONT_WAKE;
1676 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001677 goto update_exp_and_leave;
1678 }
1679
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001680 /* 1b: check for low-level errors reported at the stream interface.
1681 * First we check if it's a retryable error (in which case we don't
1682 * want to tell the buffer). Otherwise we report the error one level
1683 * upper by setting flags into the buffers. Note that the side towards
1684 * the client cannot have connect (hence retryable) errors. Also, the
1685 * connection setup code must be able to deal with any type of abort.
1686 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001687 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001688 if (unlikely(si_f->flags & SI_FL_ERR)) {
1689 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1690 si_shutr(si_f);
1691 si_shutw(si_f);
1692 stream_int_report_error(si_f);
1693 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001694 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001695 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001696 if (srv)
1697 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001698 if (!(s->flags & SF_ERR_MASK))
1699 s->flags |= SF_ERR_CLICL;
1700 if (!(s->flags & SF_FINST_MASK))
1701 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001702 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001703 }
1704 }
1705
Willy Tarreau8f128b42014-11-28 15:07:47 +01001706 if (unlikely(si_b->flags & SI_FL_ERR)) {
1707 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1708 si_shutr(si_b);
1709 si_shutw(si_b);
1710 stream_int_report_error(si_b);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001711 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001712 if (srv)
1713 srv->counters.failed_resp++;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001714 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001715 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001716 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001717 if (srv)
1718 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001719 if (!(s->flags & SF_ERR_MASK))
1720 s->flags |= SF_ERR_SRVCL;
1721 if (!(s->flags & SF_FINST_MASK))
1722 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001723 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001724 }
1725 /* note: maybe we should process connection errors here ? */
1726 }
1727
Willy Tarreau8f128b42014-11-28 15:07:47 +01001728 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001729 /* we were trying to establish a connection on the server side,
1730 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1731 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001732 if (unlikely(!sess_update_st_con_tcp(s)))
1733 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001734 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001735 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001736
1737 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1738 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1739 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1740 */
1741 }
1742
Willy Tarreau8f128b42014-11-28 15:07:47 +01001743 rq_prod_last = si_f->state;
1744 rq_cons_last = si_b->state;
1745 rp_cons_last = si_f->state;
1746 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001747
1748 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001749 /* Check for connection closure */
1750
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001751 DPRINTF(stderr,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001752 "[%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 +01001753 now_ms, __FUNCTION__, __LINE__,
1754 t,
1755 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001756 req, res,
1757 req->rex, res->wex,
1758 req->flags, res->flags,
1759 req->buf->i, req->buf->o, res->buf->i, res->buf->o, si_f->state, si_b->state,
1760 si_f->err_type, si_b->err_type,
1761 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001762
1763 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001764 if (unlikely(si_f->state == SI_ST_DIS))
1765 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001766
1767 /* When a server-side connection is released, we have to count it and
1768 * check for pending connections on this server.
1769 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001770 if (unlikely(si_b->state == SI_ST_DIS)) {
1771 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001772 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001773 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001774 if (s->flags & SF_CURR_SESS) {
1775 s->flags &= ~SF_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +01001776 srv->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001777 }
1778 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001779 if (may_dequeue_tasks(srv, s->be))
1780 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001781 }
1782 }
1783
1784 /*
1785 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1786 * at this point.
1787 */
1788
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001789 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001790 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001791 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1792 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
1793 si_f->state != rq_prod_last ||
1794 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001795 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001796 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001797
Willy Tarreau8f128b42014-11-28 15:07:47 +01001798 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001799 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001800 unsigned int ana_list;
1801 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001802
Willy Tarreau90deb182010-01-07 00:20:41 +01001803 /* it's up to the analysers to stop new connections,
1804 * disable reading or closing. Note: if an analyser
1805 * disables any of these bits, it is responsible for
1806 * enabling them again when it disables itself, so
1807 * that other analysers are called in similar conditions.
1808 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001809 channel_auto_read(req);
1810 channel_auto_connect(req);
1811 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001812
1813 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001814 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001815 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001816 * the list when not needed. Any analyser may return 0
1817 * to break out of the loop, either because of missing
1818 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001819 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001820 * analyser, and we may loop again if other analysers
1821 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001822 *
1823 * We build a list of analysers to run. We evaluate all
1824 * of these analysers in the order of the lower bit to
1825 * the higher bit. This ordering is very important.
1826 * An analyser will often add/remove other analysers,
1827 * including itself. Any changes to itself have no effect
1828 * on the loop. If it removes any other analysers, we
1829 * want those analysers not to be called anymore during
1830 * this loop. If it adds an analyser that is located
1831 * after itself, we want it to be scheduled for being
1832 * processed during the loop. If it adds an analyser
1833 * which is located before it, we want it to switch to
1834 * it immediately, even if it has already been called
1835 * once but removed since.
1836 *
1837 * In order to achieve this, we compare the analyser
1838 * list after the call with a copy of it before the
1839 * call. The work list is fed with analyser bits that
1840 * appeared during the call. Then we compare previous
1841 * work list with the new one, and check the bits that
1842 * appeared. If the lowest of these bits is lower than
1843 * the current bit, it means we have enabled a previous
1844 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001845 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001846
Willy Tarreau8f128b42014-11-28 15:07:47 +01001847 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001848 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001849 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001850 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001851 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1852 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1853 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1854 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1855 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001856 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001857 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1858 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1859 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1860 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1861 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1862 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1863 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001864 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001865 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001866 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1867 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001868 break;
1869 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001870 }
Willy Tarreau84455332009-03-15 22:34:05 +01001871
Willy Tarreau8f128b42014-11-28 15:07:47 +01001872 rq_prod_last = si_f->state;
1873 rq_cons_last = si_b->state;
1874 req->flags &= ~CF_WAKE_ONCE;
1875 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001876
Willy Tarreau8f128b42014-11-28 15:07:47 +01001877 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001878 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001879 }
1880
Willy Tarreau576507f2010-01-07 00:09:04 +01001881 /* we'll monitor the request analysers while parsing the response,
1882 * because some response analysers may indirectly enable new request
1883 * analysers (eg: HTTP keep-alive).
1884 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001885 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01001886
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001887 resync_response:
1888 /* Analyse response */
1889
Willy Tarreau8f128b42014-11-28 15:07:47 +01001890 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
1891 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
1892 si_f->state != rp_cons_last ||
1893 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001894 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001895 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001896
Willy Tarreau8f128b42014-11-28 15:07:47 +01001897 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001898 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001899 unsigned int ana_list;
1900 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001901
Willy Tarreau90deb182010-01-07 00:20:41 +01001902 /* it's up to the analysers to stop disable reading or
1903 * closing. Note: if an analyser disables any of these
1904 * bits, it is responsible for enabling them again when
1905 * it disables itself, so that other analysers are called
1906 * in similar conditions.
1907 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001908 channel_auto_read(res);
1909 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001910
1911 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001912 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001913 * to MSB. The analysers must remove themselves from
1914 * the list when not needed. Any analyser may return 0
1915 * to break out of the loop, either because of missing
1916 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001917 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001918 * analyser, and we may loop again if other analysers
1919 * are added in the middle.
1920 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001921
Willy Tarreau8f128b42014-11-28 15:07:47 +01001922 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001923 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001924 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001925 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
1926 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001927 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
1928 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
1929 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
1930 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 +01001931 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001932 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001933 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
1934 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001935 break;
1936 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001937 }
1938
Willy Tarreau8f128b42014-11-28 15:07:47 +01001939 rp_cons_last = si_f->state;
1940 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02001941 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001942 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001943
Willy Tarreau8f128b42014-11-28 15:07:47 +01001944 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001945 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001946 }
1947
Willy Tarreau576507f2010-01-07 00:09:04 +01001948 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001949 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01001950 goto resync_request;
1951
Willy Tarreau8f128b42014-11-28 15:07:47 +01001952 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01001953 goto resync_request;
1954
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001955 /* FIXME: here we should call protocol handlers which rely on
1956 * both buffers.
1957 */
1958
1959
1960 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02001961 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01001962 * we're just in a data phase here since it means we have not
1963 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001964 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001965 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001966 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001967 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001968 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001969 req->analysers = 0;
1970 if (req->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001971 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001972 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001973 if (srv)
1974 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001975 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01001976 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001977 else if (req->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001978 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001979 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001980 if (srv)
1981 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001982 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01001983 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001984 else if (req->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001985 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001986 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001987 if (srv)
1988 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001989 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01001990 }
1991 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001992 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001993 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001994 if (srv)
1995 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001996 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01001997 }
Willy Tarreau84455332009-03-15 22:34:05 +01001998 sess_set_term_flags(s);
1999 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002000 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002001 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002002 res->analysers = 0;
2003 if (res->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002004 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002005 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002006 if (srv)
2007 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002008 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002009 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002010 else if (res->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002011 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002012 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002013 if (srv)
2014 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002015 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002016 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002017 else if (res->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002018 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002019 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002020 if (srv)
2021 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002022 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002023 }
2024 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002025 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002026 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002027 if (srv)
2028 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002029 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002030 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002031 sess_set_term_flags(s);
2032 }
Willy Tarreau84455332009-03-15 22:34:05 +01002033 }
2034
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002035 /*
2036 * Here we take care of forwarding unhandled data. This also includes
2037 * connection establishments and shutdown requests.
2038 */
2039
2040
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002041 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002042 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002043 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002044 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002045 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002046 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002047 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2048 (si_f->state >= SI_ST_EST) &&
2049 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002050 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002051 * attached to it. If any data are left in, we'll permit them to
2052 * move.
2053 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002054 channel_auto_read(req);
2055 channel_auto_connect(req);
2056 channel_auto_close(req);
2057 buffer_flush(req->buf);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002058
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002059 /* We'll let data flow between the producer (if still connected)
2060 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002061 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002062 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002063 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002064
2065 /* Just in order to support fetching HTTP contents after start
2066 * of forwarding when the HTTP forwarding analyser is not used,
2067 * we simply reset msg->sov so that HTTP rewinding points to the
2068 * headers.
2069 */
2070 if (s->txn)
2071 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - req->buf->o;
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002072 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002073
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002074 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002075 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2076 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002077 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002078 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->rcv_pipe) &&
2079 (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 +01002080 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002081 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2082 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002083 (req->flags & CF_STREAMER_FAST)))) {
2084 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002085 }
2086
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002087 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002088 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002089
2090 /*
2091 * Now forward all shutdown requests between both sides of the buffer
2092 */
2093
Willy Tarreau520d95e2009-09-19 21:04:57 +02002094 /* first, let's check if the request buffer needs to shutdown(write), which may
2095 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002096 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2097 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002098 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002099 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002100 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002101 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002102 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002103
2104 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002105 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2106 channel_is_empty(req))) {
2107 if (req->flags & CF_READ_ERROR)
2108 si_b->flags |= SI_FL_NOLINGER;
2109 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002110 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002111
2112 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002113 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2114 !req->analysers))
2115 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002116
2117 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002118 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2119 if (si_f->flags & SI_FL_NOHALF)
2120 si_f->flags |= SI_FL_NOLINGER;
2121 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002122 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002123
Willy Tarreau520d95e2009-09-19 21:04:57 +02002124 /* it's possible that an upper layer has requested a connection setup or abort.
2125 * There are 2 situations where we decide to establish a new connection :
2126 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002127 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002128 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002129 if (si_b->state == SI_ST_INI) {
2130 if (!(req->flags & CF_SHUTW)) {
2131 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002132 /* If we have an appctx, there is no connect method, so we
2133 * immediately switch to the connected state, otherwise we
2134 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002135 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002136 si_b->state = SI_ST_REQ; /* new connection requested */
2137 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002138 }
Willy Tarreau73201222009-08-16 18:27:24 +02002139 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002140 else {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002141 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2142 channel_shutw_now(req); /* fix buffer flags upon abort */
2143 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002144 }
Willy Tarreau92795622009-03-06 12:51:23 +01002145 }
2146
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002147
2148 /* we may have a pending connection request, or a connection waiting
2149 * for completion.
2150 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002151 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002152
2153 /* prune the request variables and swap to the response variables. */
2154 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreau6204cd92016-03-10 16:33:04 +01002155 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002156 vars_init(&s->vars_reqres, SCOPE_RES);
2157 }
2158
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002159 do {
2160 /* nb: step 1 might switch from QUE to ASS, but we first want
2161 * to give a chance to step 2 to perform a redirect if needed.
2162 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002163 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002164 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002165 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002166 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002167
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002168 /* applets directly go to the ESTABLISHED state. Similarly,
2169 * servers experience the same fate when their connection
2170 * is reused.
2171 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002172 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002173 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002174
Willy Tarreaub44c8732013-12-31 23:16:50 +01002175 /* Now we can add the server name to a header (if requested) */
2176 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002177 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002178 (s->be->server_id_hdr_name != NULL) &&
2179 (s->be->mode == PR_MODE_HTTP) &&
2180 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002181 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002182 }
2183
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002184 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002185 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002186 http_perform_server_redirect(s, si_b);
2187 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002188 }
2189
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002190 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002191 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002192 goto resync_stream_interface;
2193
Willy Tarreau815a9b22010-07-27 17:15:12 +02002194 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002195 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002196 goto resync_request;
2197
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002198 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002199
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002200 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002201 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002202 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002203 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002204 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002205 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002206 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2207 (si_b->state >= SI_ST_EST) &&
2208 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002209 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002210 * attached to it. If any data are left in, we'll permit them to
2211 * move.
2212 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002213 channel_auto_read(res);
2214 channel_auto_close(res);
2215 buffer_flush(res->buf);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002216
2217 /* We'll let data flow between the producer (if still connected)
2218 * to the consumer.
2219 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002220 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002221 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002222
Willy Tarreau42529c32015-07-09 18:38:57 +02002223 /* Just in order to support fetching HTTP contents after start
2224 * of forwarding when the HTTP forwarding analyser is not used,
2225 * we simply reset msg->sov so that HTTP rewinding points to the
2226 * headers.
2227 */
2228 if (s->txn)
2229 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - res->buf->o;
2230
Willy Tarreauce887fd2012-05-12 12:50:00 +02002231 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002232 * tunnel timeout set, use it now. Note that we must respect
2233 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002234 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002235 if (!req->analysers && s->be->timeout.tunnel) {
2236 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002237 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002238
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002239 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2240 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002241 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2242 res->rto = s->be->timeout.serverfin;
2243 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2244 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002245 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2246 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002247
Willy Tarreau8f128b42014-11-28 15:07:47 +01002248 req->rex = tick_add(now_ms, req->rto);
2249 req->wex = tick_add(now_ms, req->wto);
2250 res->rex = tick_add(now_ms, res->rto);
2251 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002252 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002253 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002254
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002255 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002256 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2257 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002258 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002259 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->snd_pipe) &&
2260 (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 +01002261 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002262 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2263 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002264 (res->flags & CF_STREAMER_FAST)))) {
2265 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002266 }
2267
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002268 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002269 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002270
2271 /*
2272 * Now forward all shutdown requests between both sides of the buffer
2273 */
2274
2275 /*
2276 * FIXME: this is probably where we should produce error responses.
2277 */
2278
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002279 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002280 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002281 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002282 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002283 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002284
2285 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002286 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2287 channel_is_empty(res))) {
2288 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002289 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002290
2291 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002292 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2293 !res->analysers)
2294 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002295
2296 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002297 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2298 if (si_b->flags & SI_FL_NOHALF)
2299 si_b->flags |= SI_FL_NOLINGER;
2300 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002301 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002302
Willy Tarreau8f128b42014-11-28 15:07:47 +01002303 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002304 goto resync_stream_interface;
2305
Willy Tarreau8f128b42014-11-28 15:07:47 +01002306 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002307 goto resync_request;
2308
Willy Tarreau8f128b42014-11-28 15:07:47 +01002309 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002310 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002311
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002312 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002313 si_f->flags &= ~SI_FL_DONT_WAKE;
2314 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002315
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002316 /* This is needed only when debugging is enabled, to indicate
2317 * client-side or server-side close. Please note that in the unlikely
2318 * event where both sides would close at once, the sequence is reported
2319 * on the server side first.
2320 */
2321 if (unlikely((global.mode & MODE_DEBUG) &&
2322 (!(global.mode & MODE_QUIET) ||
2323 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002324 if (si_b->state == SI_ST_CLO &&
2325 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002326 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002327 s->uniq_id, s->be->id,
Willy Tarreau585744b2017-08-24 14:31:19 +02002328 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->handle.fd : -1,
2329 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002330 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002331 }
2332
Willy Tarreau8f128b42014-11-28 15:07:47 +01002333 if (si_f->state == SI_ST_CLO &&
2334 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002335 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002336 s->uniq_id, s->be->id,
Willy Tarreau585744b2017-08-24 14:31:19 +02002337 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->handle.fd : -1,
2338 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002339 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002340 }
2341 }
2342
Willy Tarreau8f128b42014-11-28 15:07:47 +01002343 if (likely((si_f->state != SI_ST_CLO) ||
2344 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002345
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002346 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002347 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002348
Willy Tarreau563cc372015-04-19 18:13:56 +02002349 if (si_f->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002350 si_update(si_f);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002351
Willy Tarreau563cc372015-04-19 18:13:56 +02002352 if (si_b->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002353 si_update(si_b);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002354
Willy Tarreau8f128b42014-11-28 15:07:47 +01002355 req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2356 res->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2357 si_f->prev_state = si_f->state;
2358 si_b->prev_state = si_b->state;
2359 si_f->flags &= ~(SI_FL_ERR|SI_FL_EXP);
2360 si_b->flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002361
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002362 /* Trick: if a request is being waiting for the server to respond,
2363 * and if we know the server can timeout, we don't want the timeout
2364 * to expire on the client side first, but we're still interested
2365 * in passing data from the client to the server (eg: POST). Thus,
2366 * we can cancel the client's request timeout if the server's
2367 * request timeout is set and the server has not yet sent a response.
2368 */
2369
Willy Tarreau8f128b42014-11-28 15:07:47 +01002370 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2371 (tick_isset(req->wex) || tick_isset(res->rex))) {
2372 req->flags |= CF_READ_NOEXP;
2373 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002374 }
2375
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002376 /* Reset pending events now */
2377 s->pending_events = 0;
2378
Willy Tarreau798f4322012-11-08 14:49:17 +01002379 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002380 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002381 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2382 tick_first(tick_first(req->rex, req->wex),
2383 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002384 if (!req->analysers)
2385 req->analyse_exp = TICK_ETERNITY;
2386
2387 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2388 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2389 req->analyse_exp = tick_add(now_ms, 5000);
2390
2391 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002392
Willy Tarreau8f128b42014-11-28 15:07:47 +01002393 if (si_f->exp)
2394 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002395
Willy Tarreau8f128b42014-11-28 15:07:47 +01002396 if (si_b->exp)
2397 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002398
2399#ifdef DEBUG_FULL
Willy Tarreau127334e2009-03-28 10:47:26 +01002400 fprintf(stderr,
2401 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2402 " 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 +01002403 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2404 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002405#endif
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002406
2407#ifdef DEBUG_DEV
2408 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002409 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002410 ABORT_NOW();
2411#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002412 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002413 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002414 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002415 }
2416
Willy Tarreaue7dff022015-04-03 01:14:29 +02002417 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002418 s->be->beconn--;
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002419
Willy Tarreau05f50472017-09-15 09:19:58 +02002420 if (sess->listener)
2421 listener_release(sess->listener);
Willy Tarreau07687c12011-07-24 23:55:06 +02002422
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002423 if (unlikely((global.mode & MODE_DEBUG) &&
2424 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002425 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002426 s->uniq_id, s->be->id,
Willy Tarreau585744b2017-08-24 14:31:19 +02002427 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->handle.fd : -1,
2428 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002429 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002430 }
2431
2432 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002433 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002434
Willy Tarreaueee5b512015-04-03 23:46:31 +02002435 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002436 int n;
2437
Willy Tarreaueee5b512015-04-03 23:46:31 +02002438 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002439 if (n < 1 || n > 5)
2440 n = 0;
2441
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002442 if (sess->fe->mode == PR_MODE_HTTP) {
2443 sess->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002444 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002445 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002446 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002447 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002448 s->be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002449 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002450 }
2451
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002452 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002453 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002454 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002455 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002456 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002457 }
2458
Willy Tarreau87b09662015-04-03 00:22:06 +02002459 /* update time stats for this stream */
2460 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002461
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002462 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002463 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002464 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002465 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002466 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002467}
2468
Willy Tarreau87b09662015-04-03 00:22:06 +02002469/* Update the stream's backend and server time stats */
2470void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002471{
2472 int t_request;
2473 int t_queue;
2474 int t_connect;
2475 int t_data;
2476 int t_close;
2477 struct server *srv;
2478
2479 t_request = 0;
2480 t_queue = s->logs.t_queue;
2481 t_connect = s->logs.t_connect;
2482 t_close = s->logs.t_close;
2483 t_data = s->logs.t_data;
2484
2485 if (s->be->mode != PR_MODE_HTTP)
2486 t_data = t_connect;
2487
2488 if (t_connect < 0 || t_data < 0)
2489 return;
2490
2491 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2492 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2493
2494 t_data -= t_connect;
2495 t_connect -= t_queue;
2496 t_queue -= t_request;
2497
2498 srv = objt_server(s->target);
2499 if (srv) {
2500 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2501 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2502 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2503 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2504 }
2505 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2506 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2507 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2508 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
2509}
2510
Willy Tarreau7c669d72008-06-20 15:04:11 +02002511/*
2512 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002513 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002514 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002515 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002516 * server.
2517 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002518void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002519{
2520 if (sess->srv_conn == newsrv)
2521 return;
2522
2523 if (sess->srv_conn) {
2524 sess->srv_conn->served--;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002525 sess->srv_conn->proxy->served--;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002526 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2527 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002528 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002529 }
2530
2531 if (newsrv) {
2532 newsrv->served++;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002533 newsrv->proxy->served++;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002534 if (newsrv->proxy->lbprm.server_take_conn)
2535 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002536 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002537 }
2538}
2539
Willy Tarreau84455332009-03-15 22:34:05 +01002540/* Handle server-side errors for default protocols. It is called whenever a a
2541 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002542 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002543 * them. It's installed as ->srv_error for the server-side stream_interface.
2544 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002545void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002546{
2547 int err_type = si->err_type;
2548 int err = 0, fin = 0;
2549
2550 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002551 err = SF_ERR_CLICL;
2552 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002553 }
2554 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002555 err = SF_ERR_CLICL;
2556 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002557 }
2558 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002559 err = SF_ERR_SRVTO;
2560 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002561 }
2562 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002563 err = SF_ERR_SRVCL;
2564 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002565 }
2566 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002567 err = SF_ERR_SRVTO;
2568 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002569 }
2570 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002571 err = SF_ERR_SRVCL;
2572 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002573 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002574 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002575 err = SF_ERR_RESOURCE;
2576 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002577 }
Willy Tarreau84455332009-03-15 22:34:05 +01002578 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002579 err = SF_ERR_INTERNAL;
2580 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002581 }
2582
Willy Tarreaue7dff022015-04-03 01:14:29 +02002583 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002584 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002585 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002586 s->flags |= fin;
2587}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002588
Willy Tarreaue7dff022015-04-03 01:14:29 +02002589/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002590void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002591{
Willy Tarreau87b09662015-04-03 00:22:06 +02002592 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002593 return;
2594
Willy Tarreau87b09662015-04-03 00:22:06 +02002595 channel_shutw_now(&stream->req);
2596 channel_shutr_now(&stream->res);
2597 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002598 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002599 stream->flags |= why;
2600 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002601}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002602
Willy Tarreau8b22a712010-06-18 17:46:06 +02002603/************************************************************************/
2604/* All supported ACL keywords must be declared here. */
2605/************************************************************************/
2606
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002607/* 0=OK, <0=Alert, >0=Warning */
2608static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2609 struct proxy *px, struct act_rule *rule,
2610 char **err)
2611{
2612 struct action_kw *kw;
2613
2614 /* Check if the service name exists. */
2615 if (*(args[*cur_arg]) == 0) {
2616 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002617 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002618 }
2619
2620 /* lookup for keyword corresponding to a service. */
2621 kw = action_lookup(&service_keywords, args[*cur_arg]);
2622 if (!kw) {
2623 memprintf(err, "'%s' unknown service name.", args[1]);
2624 return ACT_RET_PRS_ERR;
2625 }
2626 (*cur_arg)++;
2627
2628 /* executes specific rule parser. */
2629 rule->kw = kw;
2630 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2631 return ACT_RET_PRS_ERR;
2632
2633 /* Register processing function. */
2634 rule->action_ptr = process_use_service;
2635 rule->action = ACT_CUSTOM;
2636
2637 return ACT_RET_PRS_OK;
2638}
2639
2640void service_keywords_register(struct action_kw_list *kw_list)
2641{
2642 LIST_ADDQ(&service_keywords, &kw_list->list);
2643}
2644
William Lallemand4c5b4d52016-11-21 08:51:11 +01002645
2646/* This function dumps a complete stream state onto the stream interface's
2647 * read buffer. The stream has to be set in strm. It returns 0 if the output
2648 * buffer is full and it needs to be called again, otherwise non-zero. It is
2649 * designed to be called from stats_dump_strm_to_buffer() below.
2650 */
2651static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2652{
2653 struct appctx *appctx = __objt_appctx(si->end);
2654 struct tm tm;
2655 extern const char *monthname[12];
2656 char pn[INET6_ADDRSTRLEN];
2657 struct connection *conn;
2658 struct appctx *tmpctx;
2659
2660 chunk_reset(&trash);
2661
2662 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2663 /* stream changed, no need to go any further */
2664 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002665 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01002666 si_applet_cant_put(si);
2667 return 0;
2668 }
2669 appctx->ctx.sess.uid = 0;
2670 appctx->ctx.sess.section = 0;
2671 return 1;
2672 }
2673
2674 switch (appctx->ctx.sess.section) {
2675 case 0: /* main status of the stream */
2676 appctx->ctx.sess.uid = strm->uniq_id;
2677 appctx->ctx.sess.section = 1;
2678 /* fall through */
2679
2680 case 1:
2681 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2682 chunk_appendf(&trash,
2683 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2684 strm,
2685 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2686 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2687 strm->uniq_id,
2688 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2689
2690 conn = objt_conn(strm_orig(strm));
2691 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2692 case AF_INET:
2693 case AF_INET6:
2694 chunk_appendf(&trash, " source=%s:%d\n",
2695 pn, get_host_port(&conn->addr.from));
2696 break;
2697 case AF_UNIX:
2698 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2699 break;
2700 default:
2701 /* no more information to print right now */
2702 chunk_appendf(&trash, "\n");
2703 break;
2704 }
2705
2706 chunk_appendf(&trash,
2707 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2708 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2709
2710 chunk_appendf(&trash,
2711 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2712 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2713 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2714 strm_li(strm) ? strm_li(strm)->luid : 0);
2715
2716 if (conn)
2717 conn_get_to_addr(conn);
2718
2719 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2720 case AF_INET:
2721 case AF_INET6:
2722 chunk_appendf(&trash, " addr=%s:%d\n",
2723 pn, get_host_port(&conn->addr.to));
2724 break;
2725 case AF_UNIX:
2726 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2727 break;
2728 default:
2729 /* no more information to print right now */
2730 chunk_appendf(&trash, "\n");
2731 break;
2732 }
2733
2734 if (strm->be->cap & PR_CAP_BE)
2735 chunk_appendf(&trash,
2736 " backend=%s (id=%u mode=%s)",
2737 strm->be->id,
2738 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2739 else
2740 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2741
2742 conn = objt_conn(strm->si[1].end);
2743 if (conn)
2744 conn_get_from_addr(conn);
2745
2746 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2747 case AF_INET:
2748 case AF_INET6:
2749 chunk_appendf(&trash, " addr=%s:%d\n",
2750 pn, get_host_port(&conn->addr.from));
2751 break;
2752 case AF_UNIX:
2753 chunk_appendf(&trash, " addr=unix\n");
2754 break;
2755 default:
2756 /* no more information to print right now */
2757 chunk_appendf(&trash, "\n");
2758 break;
2759 }
2760
2761 if (strm->be->cap & PR_CAP_BE)
2762 chunk_appendf(&trash,
2763 " server=%s (id=%u)",
2764 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2765 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2766 else
2767 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2768
2769 if (conn)
2770 conn_get_to_addr(conn);
2771
2772 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2773 case AF_INET:
2774 case AF_INET6:
2775 chunk_appendf(&trash, " addr=%s:%d\n",
2776 pn, get_host_port(&conn->addr.to));
2777 break;
2778 case AF_UNIX:
2779 chunk_appendf(&trash, " addr=unix\n");
2780 break;
2781 default:
2782 /* no more information to print right now */
2783 chunk_appendf(&trash, "\n");
2784 break;
2785 }
2786
2787 chunk_appendf(&trash,
2788 " task=%p (state=0x%02x nice=%d calls=%d exp=%s%s",
2789 strm->task,
2790 strm->task->state,
2791 strm->task->nice, strm->task->calls,
2792 strm->task->expire ?
2793 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2794 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2795 TICKS_TO_MS(1000)) : "<NEVER>",
2796 task_in_rq(strm->task) ? ", running" : "");
2797
2798 chunk_appendf(&trash,
2799 " age=%s)\n",
2800 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2801
2802 if (strm->txn)
2803 chunk_appendf(&trash,
2804 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2805 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02002806 h1_msg_state_str(strm->txn->req.msg_state), h1_msg_state_str(strm->txn->rsp.msg_state), !LIST_ISEMPTY(&strm->buffer_wait.list));
William Lallemand4c5b4d52016-11-21 08:51:11 +01002807
2808 chunk_appendf(&trash,
2809 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2810 &strm->si[0],
2811 si_state_str(strm->si[0].state),
2812 strm->si[0].flags,
2813 obj_type_name(strm->si[0].end),
2814 obj_base_ptr(strm->si[0].end),
2815 strm->si[0].exp ?
2816 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2817 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2818 TICKS_TO_MS(1000)) : "<NEVER>",
2819 strm->si[0].err_type);
2820
2821 chunk_appendf(&trash,
2822 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2823 &strm->si[1],
2824 si_state_str(strm->si[1].state),
2825 strm->si[1].flags,
2826 obj_type_name(strm->si[1].end),
2827 obj_base_ptr(strm->si[1].end),
2828 strm->si[1].exp ?
2829 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2830 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2831 TICKS_TO_MS(1000)) : "<NEVER>",
2832 strm->si[1].err_type);
2833
2834 if ((conn = objt_conn(strm->si[0].end)) != NULL) {
2835 chunk_appendf(&trash,
2836 " co0=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2837 conn,
2838 conn_get_ctrl_name(conn),
2839 conn_get_xprt_name(conn),
2840 conn_get_data_name(conn),
2841 obj_type_name(conn->target),
2842 obj_base_ptr(conn->target));
2843
2844 chunk_appendf(&trash,
2845 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2846 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002847 conn->handle.fd,
2848 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
2849 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache : 0,
2850 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].updated : 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002851 }
2852 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2853 chunk_appendf(&trash,
2854 " app0=%p st0=%d st1=%d st2=%d applet=%s\n",
2855 tmpctx,
2856 tmpctx->st0,
2857 tmpctx->st1,
2858 tmpctx->st2,
2859 tmpctx->applet->name);
2860 }
2861
2862 if ((conn = objt_conn(strm->si[1].end)) != NULL) {
2863 chunk_appendf(&trash,
2864 " co1=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2865 conn,
2866 conn_get_ctrl_name(conn),
2867 conn_get_xprt_name(conn),
2868 conn_get_data_name(conn),
2869 obj_type_name(conn->target),
2870 obj_base_ptr(conn->target));
2871
2872 chunk_appendf(&trash,
2873 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2874 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002875 conn->handle.fd,
2876 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
2877 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache : 0,
2878 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].updated : 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002879 }
2880 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
2881 chunk_appendf(&trash,
2882 " app1=%p st0=%d st1=%d st2=%d applet=%s\n",
2883 tmpctx,
2884 tmpctx->st0,
2885 tmpctx->st1,
2886 tmpctx->st2,
2887 tmpctx->applet->name);
2888 }
2889
2890 chunk_appendf(&trash,
2891 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2892 " an_exp=%s",
2893 &strm->req,
2894 strm->req.flags, strm->req.analysers,
2895 strm->req.pipe ? strm->req.pipe->data : 0,
2896 strm->req.to_forward, strm->req.total,
2897 strm->req.analyse_exp ?
2898 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
2899 TICKS_TO_MS(1000)) : "<NEVER>");
2900
2901 chunk_appendf(&trash,
2902 " rex=%s",
2903 strm->req.rex ?
2904 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
2905 TICKS_TO_MS(1000)) : "<NEVER>");
2906
2907 chunk_appendf(&trash,
2908 " wex=%s\n"
2909 " buf=%p data=%p o=%d p=%d req.next=%d i=%d size=%d\n",
2910 strm->req.wex ?
2911 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
2912 TICKS_TO_MS(1000)) : "<NEVER>",
2913 strm->req.buf,
2914 strm->req.buf->data, strm->req.buf->o,
2915 (int)(strm->req.buf->p - strm->req.buf->data),
2916 strm->txn ? strm->txn->req.next : 0, strm->req.buf->i,
2917 strm->req.buf->size);
2918
2919 chunk_appendf(&trash,
2920 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2921 " an_exp=%s",
2922 &strm->res,
2923 strm->res.flags, strm->res.analysers,
2924 strm->res.pipe ? strm->res.pipe->data : 0,
2925 strm->res.to_forward, strm->res.total,
2926 strm->res.analyse_exp ?
2927 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
2928 TICKS_TO_MS(1000)) : "<NEVER>");
2929
2930 chunk_appendf(&trash,
2931 " rex=%s",
2932 strm->res.rex ?
2933 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
2934 TICKS_TO_MS(1000)) : "<NEVER>");
2935
2936 chunk_appendf(&trash,
2937 " wex=%s\n"
2938 " buf=%p data=%p o=%d p=%d rsp.next=%d i=%d size=%d\n",
2939 strm->res.wex ?
2940 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
2941 TICKS_TO_MS(1000)) : "<NEVER>",
2942 strm->res.buf,
2943 strm->res.buf->data, strm->res.buf->o,
2944 (int)(strm->res.buf->p - strm->res.buf->data),
2945 strm->txn ? strm->txn->rsp.next : 0, strm->res.buf->i,
2946 strm->res.buf->size);
2947
Willy Tarreau06d80a92017-10-19 14:32:15 +02002948 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01002949 si_applet_cant_put(si);
2950 return 0;
2951 }
2952
2953 /* use other states to dump the contents */
2954 }
2955 /* end of dump */
2956 appctx->ctx.sess.uid = 0;
2957 appctx->ctx.sess.section = 0;
2958 return 1;
2959}
2960
2961
2962static int cli_parse_show_sess(char **args, struct appctx *appctx, void *private)
2963{
William Lallemand4c5b4d52016-11-21 08:51:11 +01002964 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2965 return 1;
2966
2967 if (*args[2] && strcmp(args[2], "all") == 0)
2968 appctx->ctx.sess.target = (void *)-1;
2969 else if (*args[2])
2970 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
2971 else
2972 appctx->ctx.sess.target = NULL;
2973 appctx->ctx.sess.section = 0; /* start with stream status */
2974 appctx->ctx.sess.pos = 0;
2975
2976 return 0;
2977}
2978
2979/* This function dumps all streams' states onto the stream interface's
2980 * read buffer. It returns 0 if the output buffer is full and it needs
2981 * to be called again, otherwise non-zero. It is designed to be called
2982 * from stats_dump_sess_to_buffer() below.
2983 */
2984static int cli_io_handler_dump_sess(struct appctx *appctx)
2985{
2986 struct stream_interface *si = appctx->owner;
2987 struct connection *conn;
2988
2989 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
2990 /* If we're forced to shut down, we might have to remove our
2991 * reference to the last stream being dumped.
2992 */
2993 if (appctx->st2 == STAT_ST_LIST) {
2994 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
2995 LIST_DEL(&appctx->ctx.sess.bref.users);
2996 LIST_INIT(&appctx->ctx.sess.bref.users);
2997 }
2998 }
2999 return 1;
3000 }
3001
3002 chunk_reset(&trash);
3003
3004 switch (appctx->st2) {
3005 case STAT_ST_INIT:
3006 /* the function had not been called yet, let's prepare the
3007 * buffer for a response. We initialize the current stream
3008 * pointer to the first in the global list. When a target
3009 * stream is being destroyed, it is responsible for updating
3010 * this pointer. We know we have reached the end when this
3011 * pointer points back to the head of the streams list.
3012 */
3013 LIST_INIT(&appctx->ctx.sess.bref.users);
3014 appctx->ctx.sess.bref.ref = streams.n;
3015 appctx->st2 = STAT_ST_LIST;
3016 /* fall through */
3017
3018 case STAT_ST_LIST:
3019 /* first, let's detach the back-ref from a possible previous stream */
3020 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3021 LIST_DEL(&appctx->ctx.sess.bref.users);
3022 LIST_INIT(&appctx->ctx.sess.bref.users);
3023 }
3024
3025 /* and start from where we stopped */
3026 while (appctx->ctx.sess.bref.ref != &streams) {
3027 char pn[INET6_ADDRSTRLEN];
3028 struct stream *curr_strm;
3029
3030 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3031
3032 if (appctx->ctx.sess.target) {
3033 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3034 goto next_sess;
3035
3036 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3037 /* call the proper dump() function and return if we're missing space */
3038 if (!stats_dump_full_strm_to_buffer(si, curr_strm))
3039 return 0;
3040
3041 /* stream dump complete */
3042 LIST_DEL(&appctx->ctx.sess.bref.users);
3043 LIST_INIT(&appctx->ctx.sess.bref.users);
3044 if (appctx->ctx.sess.target != (void *)-1) {
3045 appctx->ctx.sess.target = NULL;
3046 break;
3047 }
3048 else
3049 goto next_sess;
3050 }
3051
3052 chunk_appendf(&trash,
3053 "%p: proto=%s",
3054 curr_strm,
3055 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3056
3057 conn = objt_conn(strm_orig(curr_strm));
3058 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3059 case AF_INET:
3060 case AF_INET6:
3061 chunk_appendf(&trash,
3062 " src=%s:%d fe=%s be=%s srv=%s",
3063 pn,
3064 get_host_port(&conn->addr.from),
3065 strm_fe(curr_strm)->id,
3066 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3067 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3068 );
3069 break;
3070 case AF_UNIX:
3071 chunk_appendf(&trash,
3072 " src=unix:%d fe=%s be=%s srv=%s",
3073 strm_li(curr_strm)->luid,
3074 strm_fe(curr_strm)->id,
3075 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3076 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3077 );
3078 break;
3079 }
3080
3081 chunk_appendf(&trash,
3082 " ts=%02x age=%s calls=%d",
3083 curr_strm->task->state,
3084 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3085 curr_strm->task->calls);
3086
3087 chunk_appendf(&trash,
3088 " rq[f=%06xh,i=%d,an=%02xh,rx=%s",
3089 curr_strm->req.flags,
3090 curr_strm->req.buf->i,
3091 curr_strm->req.analysers,
3092 curr_strm->req.rex ?
3093 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3094 TICKS_TO_MS(1000)) : "");
3095
3096 chunk_appendf(&trash,
3097 ",wx=%s",
3098 curr_strm->req.wex ?
3099 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3100 TICKS_TO_MS(1000)) : "");
3101
3102 chunk_appendf(&trash,
3103 ",ax=%s]",
3104 curr_strm->req.analyse_exp ?
3105 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3106 TICKS_TO_MS(1000)) : "");
3107
3108 chunk_appendf(&trash,
3109 " rp[f=%06xh,i=%d,an=%02xh,rx=%s",
3110 curr_strm->res.flags,
3111 curr_strm->res.buf->i,
3112 curr_strm->res.analysers,
3113 curr_strm->res.rex ?
3114 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3115 TICKS_TO_MS(1000)) : "");
3116
3117 chunk_appendf(&trash,
3118 ",wx=%s",
3119 curr_strm->res.wex ?
3120 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3121 TICKS_TO_MS(1000)) : "");
3122
3123 chunk_appendf(&trash,
3124 ",ax=%s]",
3125 curr_strm->res.analyse_exp ?
3126 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3127 TICKS_TO_MS(1000)) : "");
3128
3129 conn = objt_conn(curr_strm->si[0].end);
3130 chunk_appendf(&trash,
3131 " s0=[%d,%1xh,fd=%d,ex=%s]",
3132 curr_strm->si[0].state,
3133 curr_strm->si[0].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003134 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003135 curr_strm->si[0].exp ?
3136 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3137 TICKS_TO_MS(1000)) : "");
3138
3139 conn = objt_conn(curr_strm->si[1].end);
3140 chunk_appendf(&trash,
3141 " s1=[%d,%1xh,fd=%d,ex=%s]",
3142 curr_strm->si[1].state,
3143 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003144 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003145 curr_strm->si[1].exp ?
3146 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3147 TICKS_TO_MS(1000)) : "");
3148
3149 chunk_appendf(&trash,
3150 " exp=%s",
3151 curr_strm->task->expire ?
3152 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3153 TICKS_TO_MS(1000)) : "");
3154 if (task_in_rq(curr_strm->task))
3155 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3156
3157 chunk_appendf(&trash, "\n");
3158
Willy Tarreau06d80a92017-10-19 14:32:15 +02003159 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003160 /* let's try again later from this stream. We add ourselves into
3161 * this stream's users so that it can remove us upon termination.
3162 */
3163 si_applet_cant_put(si);
3164 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3165 return 0;
3166 }
3167
3168 next_sess:
3169 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3170 }
3171
3172 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3173 /* specified stream not found */
3174 if (appctx->ctx.sess.section > 0)
3175 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3176 else
3177 chunk_appendf(&trash, "Session not found.\n");
3178
Willy Tarreau06d80a92017-10-19 14:32:15 +02003179 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003180 si_applet_cant_put(si);
3181 return 0;
3182 }
3183
3184 appctx->ctx.sess.target = NULL;
3185 appctx->ctx.sess.uid = 0;
3186 return 1;
3187 }
3188
3189 appctx->st2 = STAT_ST_FIN;
3190 /* fall through */
3191
3192 default:
3193 appctx->st2 = STAT_ST_FIN;
3194 return 1;
3195 }
3196}
3197
3198static void cli_release_show_sess(struct appctx *appctx)
3199{
3200 if (appctx->st2 == STAT_ST_LIST) {
3201 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3202 LIST_DEL(&appctx->ctx.sess.bref.users);
3203 }
3204}
3205
Willy Tarreau61b65212016-11-24 11:09:25 +01003206/* Parses the "shutdown session" directive, it always returns 1 */
3207static int cli_parse_shutdown_session(char **args, struct appctx *appctx, void *private)
3208{
3209 struct stream *strm, *ptr;
3210
3211 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3212 return 1;
3213
3214 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003215 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003216 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003217 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003218 return 1;
3219 }
3220
3221 ptr = (void *)strtoul(args[2], NULL, 0);
3222
3223 /* first, look for the requested stream in the stream table */
3224 list_for_each_entry(strm, &streams, list) {
3225 if (strm == ptr)
3226 break;
3227 }
3228
3229 /* do we have the stream ? */
3230 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003231 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003232 appctx->ctx.cli.msg = "No such session (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 stream_shutdown(strm, SF_ERR_KILLED);
3238 return 1;
3239}
3240
Willy Tarreau4e46b622016-11-23 16:50:48 +01003241/* Parses the "shutdown session server" directive, it always returns 1 */
3242static int cli_parse_shutdown_sessions_server(char **args, struct appctx *appctx, void *private)
3243{
3244 struct server *sv;
3245 struct stream *strm, *strm_bck;
3246
3247 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3248 return 1;
3249
3250 sv = cli_find_server(appctx, args[3]);
3251 if (!sv)
3252 return 1;
3253
3254 /* kill all the stream that are on this server */
3255 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3256 if (strm->srv_conn == sv)
3257 stream_shutdown(strm, SF_ERR_KILLED);
3258 return 1;
3259}
3260
William Lallemand4c5b4d52016-11-21 08:51:11 +01003261/* register cli keywords */
3262static struct cli_kw_list cli_kws = {{ },{
3263 { { "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 +01003264 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003265 { { "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 +01003266 {{},}
3267}};
3268
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003269/* main configuration keyword registration. */
3270static struct action_kw_list stream_tcp_keywords = { ILH, {
3271 { "use-service", stream_parse_use_service },
3272 { /* END */ }
3273}};
3274
3275static struct action_kw_list stream_http_keywords = { ILH, {
3276 { "use-service", stream_parse_use_service },
3277 { /* END */ }
3278}};
3279
Willy Tarreau8b22a712010-06-18 17:46:06 +02003280__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003281static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003282{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003283 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3284 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003285 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003286}
3287
Willy Tarreaubaaee002006-06-26 02:48:02 +02003288/*
3289 * Local variables:
3290 * c-indent-level: 8
3291 * c-basic-offset: 8
3292 * End:
3293 */