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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)
Olivier Houchard1a0545f2017-09-13 18:30:23 +0200258 conn_xprt_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 Tarreau630f99a2017-10-05 18:13:15 +0200337 if (cli_conn) {
338 conn_stop_tracking(cli_conn);
339 conn_full_close(cli_conn);
340 }
Willy Tarreau1e954912012-10-12 17:50:05 +0200341
Willy Tarreaua4cda672010-06-06 18:28:49 +0200342 for (i = 0; i < s->store_count; i++) {
343 if (!s->store[i].ts)
344 continue;
345 stksess_free(s->store[i].table, s->store[i].ts);
346 s->store[i].ts = NULL;
347 }
348
Willy Tarreaueee5b512015-04-03 23:46:31 +0200349 if (s->txn) {
350 pool_free2(pool2_hdr_idx, s->txn->hdr_idx.v);
351 pool_free2(pool2_http_txn, s->txn);
352 s->txn = NULL;
353 }
354
Christopher Fauletd7c91962015-04-30 11:48:27 +0200355 flt_stream_stop(s);
Christopher Faulet92d36382015-11-05 13:35:03 +0100356 flt_stream_release(s, 0);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200357
Willy Tarreau92fb9832007-10-16 17:34:28 +0200358 if (fe) {
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200359 pool_free2(fe->rsp_cap_pool, s->res_cap);
360 pool_free2(fe->req_cap_pool, s->req_cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200361 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100362
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200363 /* Cleanup all variable contexts. */
Willy Tarreau6204cd92016-03-10 16:33:04 +0100364 vars_prune(&s->vars_txn, s->sess, s);
365 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200366
Willy Tarreau87b09662015-04-03 00:22:06 +0200367 stream_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200368
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100369 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100370 /* we have to unlink all watchers. We must not relink them if
Willy Tarreau87b09662015-04-03 00:22:06 +0200371 * this stream was the last one in the list.
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100372 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100373 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100374 LIST_INIT(&bref->users);
Willy Tarreau87b09662015-04-03 00:22:06 +0200375 if (s->list.n != &streams)
376 LIST_ADDQ(&LIST_ELEM(s->list.n, struct stream *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100377 bref->ref = s->list.n;
378 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100379 LIST_DEL(&s->list);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200380 si_release_endpoint(&s->si[1]);
381 si_release_endpoint(&s->si[0]);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200382
383 /* FIXME: for now we have a 1:1 relation between stream and session so
384 * the stream must free the session.
385 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200386 pool_free2(pool2_stream, s);
Willy Tarreau11c36242015-04-04 15:54:03 +0200387 session_free(sess);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200388
389 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200390 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200391 pool_flush2(pool2_buffer);
Willy Tarreau63986c72015-04-03 22:55:33 +0200392 pool_flush2(pool2_http_txn);
Willy Tarreau34eb6712011-10-24 18:15:04 +0200393 pool_flush2(pool2_hdr_idx);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200394 pool_flush2(pool2_requri);
395 pool_flush2(pool2_capture);
Willy Tarreau87b09662015-04-03 00:22:06 +0200396 pool_flush2(pool2_stream);
Willy Tarreaufeb76402015-04-03 14:10:06 +0200397 pool_flush2(pool2_session);
Willy Tarreau3a5e0602014-11-13 16:46:28 +0100398 pool_flush2(pool2_connection);
399 pool_flush2(pool2_pendconn);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200400 pool_flush2(fe->req_cap_pool);
401 pool_flush2(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200402 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200403}
404
Willy Tarreau656859d2014-11-25 19:46:36 +0100405
Willy Tarreau87b09662015-04-03 00:22:06 +0200406/* Allocates a work buffer for stream <s>. It is meant to be called inside
407 * process_stream(). It will only allocate the side needed for the function
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200408 * to work fine, which is the response buffer so that an error message may be
409 * built and returned. Response buffers may be allocated from the reserve, this
410 * is critical to ensure that a response may always flow and will never block a
411 * server from releasing a connection. Returns 0 in case of failure, non-zero
412 * otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100413 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100414static int stream_alloc_work_buffer(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100415{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100416 if (!LIST_ISEMPTY(&s->buffer_wait.list)) {
417 LIST_DEL(&s->buffer_wait.list);
418 LIST_INIT(&s->buffer_wait.list);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100419 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100420
Willy Tarreaubc39a5d2015-04-20 15:52:18 +0200421 if (b_alloc_margin(&s->res.buf, 0))
Willy Tarreau656859d2014-11-25 19:46:36 +0100422 return 1;
423
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100424 LIST_ADDQ(&buffer_wq, &s->buffer_wait.list);
Willy Tarreau656859d2014-11-25 19:46:36 +0100425 return 0;
426}
427
428/* releases unused buffers after processing. Typically used at the end of the
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100429 * update() functions. It will try to wake up as many tasks/applets as the
430 * number of buffers that it releases. In practice, most often streams are
431 * blocked on a single buffer, so it makes sense to try to wake two up when two
432 * buffers are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100433 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200434void stream_release_buffers(struct stream *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100435{
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100436 int offer = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100437
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100438 if (s->req.buf->size && buffer_empty(s->req.buf)) {
439 offer = 1;
440 b_free(&s->req.buf);
441 }
442 if (s->res.buf->size && buffer_empty(s->res.buf)) {
443 offer = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100444 b_free(&s->res.buf);
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100445 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100446
Willy Tarreaubf883e02014-11-25 21:10:35 +0100447 /* if we're certain to have at least 1 buffer available, and there is
448 * someone waiting, we can wake up a waiter and offer them.
449 */
Christopher Fauleta73e59b2016-12-09 17:30:18 +0100450 if (offer)
451 offer_buffers(s, tasks_run_queue + applets_active_queue);
Willy Tarreau656859d2014-11-25 19:46:36 +0100452}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200453
454/* perform minimal intializations, report 0 in case of error, 1 if OK. */
Willy Tarreau87b09662015-04-03 00:22:06 +0200455int init_stream()
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200456{
Willy Tarreau87b09662015-04-03 00:22:06 +0200457 LIST_INIT(&streams);
458 pool2_stream = create_pool("stream", sizeof(struct stream), MEM_F_SHARED);
459 return pool2_stream != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200460}
461
Willy Tarreau87b09662015-04-03 00:22:06 +0200462void stream_process_counters(struct stream *s)
Willy Tarreau30e71012007-11-26 20:15:35 +0100463{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200464 struct session *sess = s->sess;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100465 unsigned long long bytes;
Emeric Brun57056f02015-06-15 18:29:57 +0200466 void *ptr1,*ptr2;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100467 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100468
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100469 bytes = s->req.total - s->logs.bytes_in;
470 s->logs.bytes_in = s->req.total;
471 if (bytes) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200472 sess->fe->fe_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100473
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100474 s->be->be_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100475
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100476 if (objt_server(s->target))
477 objt_server(s->target)->counters.bytes_in += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200478
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200479 if (sess->listener && sess->listener->counters)
480 sess->listener->counters->bytes_in += bytes;
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200481
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100482 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200483 struct stkctr *stkctr = &s->stkctr[i];
484
485 if (!stkctr_entry(stkctr)) {
486 stkctr = &sess->stkctr[i];
487 if (!stkctr_entry(stkctr))
488 continue;
489 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200490
Emeric Brun57056f02015-06-15 18:29:57 +0200491 ptr1 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_CNT);
492 if (ptr1)
493 stktable_data_cast(ptr1, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200494
Emeric Brun57056f02015-06-15 18:29:57 +0200495 ptr2 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_RATE);
496 if (ptr2)
497 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_in_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200498 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Emeric Brun57056f02015-06-15 18:29:57 +0200499
500 /* If data was modified, we need to touch to re-schedule sync */
501 if (ptr1 || ptr2)
502 stktable_touch(stkctr->table, stkctr_entry(stkctr), 1);
Willy Tarreau30e71012007-11-26 20:15:35 +0100503 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100504 }
505
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100506 bytes = s->res.total - s->logs.bytes_out;
507 s->logs.bytes_out = s->res.total;
508 if (bytes) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200509 sess->fe->fe_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100510
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100511 s->be->be_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100512
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100513 if (objt_server(s->target))
514 objt_server(s->target)->counters.bytes_out += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200515
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200516 if (sess->listener && sess->listener->counters)
517 sess->listener->counters->bytes_out += bytes;
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200518
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100519 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200520 struct stkctr *stkctr = &s->stkctr[i];
521
522 if (!stkctr_entry(stkctr)) {
523 stkctr = &sess->stkctr[i];
524 if (!stkctr_entry(stkctr))
525 continue;
526 }
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200527
Emeric Brun57056f02015-06-15 18:29:57 +0200528 ptr1 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_CNT);
529 if (ptr1)
530 stktable_data_cast(ptr1, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200531
Emeric Brun57056f02015-06-15 18:29:57 +0200532 ptr2 = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_RATE);
533 if (ptr2)
534 update_freq_ctr_period(&stktable_data_cast(ptr2, bytes_out_rate),
Willy Tarreau8b7f8682015-04-04 16:29:12 +0200535 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Emeric Brun57056f02015-06-15 18:29:57 +0200536
537 /* If data was modified, we need to touch to re-schedule sync */
538 if (ptr1 || ptr2)
539 stktable_touch(stkctr->table, stkctr_entry(stkctr), 1);
Willy Tarreau30e71012007-11-26 20:15:35 +0100540 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100541 }
542}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200543
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100544/* This function is called with (si->state == SI_ST_CON) meaning that a
545 * connection was attempted and that the file descriptor is already allocated.
546 * We must check for establishment, error and abort. Possible output states
547 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
548 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreau87b09662015-04-03 00:22:06 +0200549 * otherwise 1. This only works with connection-based streams.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100550 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200551static int sess_update_st_con_tcp(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100552{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100553 struct stream_interface *si = &s->si[1];
554 struct channel *req = &s->req;
555 struct channel *rep = &s->res;
Willy Tarreau350135c2016-11-17 12:05:13 +0100556 struct connection *srv_conn = __objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100557
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100558 /* If we got an error, or if nothing happened and the connection timed
559 * out, we must give up. The CER state handler will take care of retry
560 * attempts and error reports.
561 */
562 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Bin Wang95fad5b2017-09-15 14:56:40 +0800563 if (unlikely(req->flags & CF_WROTE_DATA)) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100564 /* Some data were sent past the connection establishment,
565 * so we need to pretend we're established to log correctly
566 * and let later states handle the failure.
567 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100568 si->state = SI_ST_EST;
569 si->err_type = SI_ET_DATA_ERR;
Willy Tarreau103197d2014-11-28 15:26:12 +0100570 rep->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100571 return 1;
572 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100573 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100574 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100575
Willy Tarreau151a2382017-10-05 18:02:55 +0200576 conn_full_close(srv_conn);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100577
578 if (si->err_type)
579 return 0;
580
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100581 if (si->flags & SI_FL_ERR)
582 si->err_type = SI_ET_CONN_ERR;
583 else
584 si->err_type = SI_ET_CONN_TO;
585 return 0;
586 }
587
588 /* OK, maybe we want to abort */
Bin Wang95fad5b2017-09-15 14:56:40 +0800589 if (!(req->flags & CF_WROTE_DATA) &&
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100590 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200591 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
592 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100593 s->be->options & PR_O_ABRT_CLOSE)))) {
594 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200595 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100596 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100597 if (s->srv_error)
598 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100599 return 1;
600 }
601
602 /* we need to wait a bit more if there was no activity either */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200603 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100604 return 1;
605
606 /* OK, this means that a connection succeeded. The caller will be
607 * responsible for handling the transition from CON to EST.
608 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100609 si->state = SI_ST_EST;
610 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100611 return 1;
612}
613
614/* This function is called with (si->state == SI_ST_CER) meaning that a
615 * previous connection attempt has failed and that the file descriptor
616 * has already been released. Possible causes include asynchronous error
617 * notification and time out. Possible output states are SI_ST_CLO when
618 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
619 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
620 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
621 * marked as in error state. It returns 0.
622 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200623static int sess_update_st_cer(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100624{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100625 struct stream_interface *si = &s->si[1];
Willy Tarreau46d5b082017-07-26 20:13:37 +0200626 struct connection *conn = objt_conn(si->end);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100627
Willy Tarreau87b09662015-04-03 00:22:06 +0200628 /* we probably have to release last stream from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100629 if (objt_server(s->target)) {
630 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100631
Willy Tarreaue7dff022015-04-03 01:14:29 +0200632 if (s->flags & SF_CURR_SESS) {
633 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100634 objt_server(s->target)->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100635 }
Willy Tarreau46d5b082017-07-26 20:13:37 +0200636
637 if ((si->flags & SI_FL_ERR) &&
638 conn && conn->err_code == CO_ER_SSL_MISMATCH_SNI) {
639 /* We tried to connect to a server which is configured
640 * with "verify required" and which doesn't have the
641 * "verifyhost" directive. The server presented a wrong
642 * certificate (a certificate for an unexpected name),
643 * which implies that we have used SNI in the handshake,
644 * and that the server doesn't have the associated cert
645 * and presented a default one.
646 *
647 * This is a serious enough issue not to retry. It's
648 * especially important because this wrong name might
649 * either be the result of a configuration error, and
650 * retrying will only hammer the server, or is caused
651 * by the use of a wrong SNI value, most likely
652 * provided by the client and we don't want to let the
653 * client provoke retries.
654 */
655 si->conn_retries = 0;
656 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100657 }
658
659 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200660 si->conn_retries--;
661 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100662 if (!si->err_type) {
663 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100664 }
665
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100666 if (objt_server(s->target))
667 objt_server(s->target)->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100668 s->be->be_counters.failed_conns++;
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100669 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100670 if (may_dequeue_tasks(objt_server(s->target), s->be))
671 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100672
673 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200674 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100675 s->req.flags |= CF_WRITE_ERROR;
676 s->res.flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100677
678 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100679 if (s->srv_error)
680 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100681 return 0;
682 }
683
684 /* If the "redispatch" option is set on the backend, we are allowed to
Joseph Lynch726ab712015-05-11 23:25:34 -0700685 * retry on another server. By default this redispatch occurs on the
686 * last retry, but if configured we allow redispatches to occur on
687 * configurable intervals, e.g. on every retry. In order to achieve this,
Willy Tarreau87b09662015-04-03 00:22:06 +0200688 * we must mark the stream unassigned, and eventually clear the DIRECT
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100689 * bit to ignore any persistence cookie. We won't count a retry nor a
690 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200691 * If the connection is not persistent, the balancing algorithm is not
692 * determinist (round robin) and there is more than one active server,
693 * we accept to perform an immediate redispatch without waiting since
694 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100695 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200696 if (objt_server(s->target) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700697 (s->be->options & PR_O_REDISP) && !(s->flags & SF_FORCE_PRST) &&
Emeric Brun52a91d32017-08-31 14:41:55 +0200698 ((__objt_server(s->target)->cur_state < SRV_ST_RUNNING) ||
Willy Tarreau49008c12016-01-13 07:58:44 +0100699 (((s->be->redispatch_after > 0) &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700700 ((s->be->conn_retries - si->conn_retries) %
701 s->be->redispatch_after == 0)) ||
702 ((s->be->redispatch_after < 0) &&
703 ((s->be->conn_retries - si->conn_retries) %
704 (s->be->conn_retries + 1 + s->be->redispatch_after) == 0))) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200705 (!(s->flags & SF_DIRECT) && s->be->srv_act > 1 &&
Joseph Lynch726ab712015-05-11 23:25:34 -0700706 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR)))) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100707 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100708 if (may_dequeue_tasks(objt_server(s->target), s->be))
709 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100710
Willy Tarreaue7dff022015-04-03 01:14:29 +0200711 s->flags &= ~(SF_DIRECT | SF_ASSIGNED | SF_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100712 si->state = SI_ST_REQ;
713 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100714 if (objt_server(s->target))
715 objt_server(s->target)->counters.retries++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100716 s->be->be_counters.retries++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100717 si->state = SI_ST_ASS;
718 }
719
720 if (si->flags & SI_FL_ERR) {
721 /* The error was an asynchronous connection error, and we will
722 * likely have to retry connecting to the same server, most
723 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +0200724 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100725 */
726
Willy Tarreaub0290662014-06-13 17:04:44 +0200727 int delay = 1000;
728
729 if (s->be->timeout.connect && s->be->timeout.connect < delay)
730 delay = s->be->timeout.connect;
731
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100732 if (!si->err_type)
733 si->err_type = SI_ET_CONN_ERR;
734
Willy Tarreaudb6d0122014-06-13 17:40:15 +0200735 /* only wait when we're retrying on the same server */
736 if (si->state == SI_ST_ASS ||
737 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
738 (s->be->srv_act <= 1)) {
739 si->state = SI_ST_TAR;
740 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
741 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100742 return 0;
743 }
744 return 0;
745}
746
747/*
748 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200749 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200750 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100751 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200752static void sess_establish(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100753{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100754 struct stream_interface *si = &s->si[1];
755 struct channel *req = &s->req;
756 struct channel *rep = &s->res;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100757
Willy Tarreau0e37f1c2013-12-31 23:06:46 +0100758 /* First, centralize the timers information */
759 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
760 si->exp = TICK_ETERNITY;
761
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100762 if (objt_server(s->target))
763 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100764
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100765 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100766 /* if the user wants to log as soon as possible, without counting
767 * bytes from the server, then this is the right moment. */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200768 if (!LIST_ISEMPTY(&strm_fe(s)->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100769 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100770 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100771 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100772 }
773 else {
Willy Tarreaud81ca042013-12-31 22:33:13 +0100774 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100775 }
776
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100777 if (!(s->flags & SF_TUNNEL)) {
778 rep->analysers |= strm_fe(s)->fe_rsp_ana | s->be->be_rsp_ana;
Christopher Faulet309c6412015-12-02 09:57:32 +0100779
Willy Tarreaud62b98c2016-12-13 15:26:56 +0100780 /* Be sure to filter response headers if the backend is an HTTP proxy
781 * and if there are filters attached to the stream. */
782 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
783 rep->analysers |= AN_RES_FLT_HTTP_HDRS;
784 }
Christopher Faulet309c6412015-12-02 09:57:32 +0100785
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200786 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +0200787 if (req->flags & CF_WAKE_CONNECT) {
788 req->flags |= CF_WAKE_ONCE;
789 req->flags &= ~CF_WAKE_CONNECT;
790 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200791 if (objt_conn(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200792 /* real connections have timeouts */
793 req->wto = s->be->timeout.server;
794 rep->rto = s->be->timeout.server;
795 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100796 req->wex = TICK_ETERNITY;
797}
798
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700799/* Check if the connection request is in such a state that it can be aborted. */
800static int check_req_may_abort(struct channel *req, struct stream *s)
801{
802 return ((req->flags & (CF_READ_ERROR)) ||
803 ((req->flags & CF_SHUTW_NOW) && /* empty and client aborted */
804 (channel_is_empty(req) || s->be->options & PR_O_ABRT_CLOSE)));
805}
806
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100807/* Update back stream interface status for input states SI_ST_ASS, SI_ST_QUE,
808 * SI_ST_TAR. Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100809 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
810 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
811 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100812 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200813static void sess_update_stream_int(struct stream *s)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100814{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100815 struct server *srv = objt_server(s->target);
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100816 struct stream_interface *si = &s->si[1];
Willy Tarreau103197d2014-11-28 15:26:12 +0100817 struct channel *req = &s->req;
Willy Tarreau827aee92011-03-10 16:55:02 +0100818
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100819 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 +0100820 now_ms, __FUNCTION__,
821 s,
CJ Ess6eac32e2015-05-02 16:35:24 -0400822 req, &s->res,
Willy Tarreau103197d2014-11-28 15:26:12 +0100823 req->rex, s->res.wex,
824 req->flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -0400825 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 +0100826
827 if (si->state == SI_ST_ASS) {
828 /* Server assigned to connection request, we have to try to connect now */
829 int conn_err;
830
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700831 /* Before we try to initiate the connection, see if the
832 * request may be aborted instead.
833 */
834 if (check_req_may_abort(req, s)) {
835 si->err_type |= SI_ET_CONN_ABRT;
836 goto abort_connection;
837 }
838
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100839 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100840 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100841
Willy Tarreaue7dff022015-04-03 01:14:29 +0200842 if (conn_err == SF_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100843 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100844 if (srv)
845 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500846 if (srv)
847 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100848 return;
849 }
850
851 /* We have received a synchronous error. We might have to
852 * abort, retry immediately or redispatch.
853 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200854 if (conn_err == SF_ERR_INTERNAL) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100855 if (!si->err_type) {
856 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100857 }
858
Willy Tarreau827aee92011-03-10 16:55:02 +0100859 if (srv)
860 srv_inc_sess_ctr(srv);
861 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500862 srv_set_sess_last(srv);
863 if (srv)
Willy Tarreau827aee92011-03-10 16:55:02 +0100864 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100865 s->be->be_counters.failed_conns++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100866
Willy Tarreau87b09662015-04-03 00:22:06 +0200867 /* release other streams waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100868 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +0100869 if (may_dequeue_tasks(srv, s->be))
870 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100871
872 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200873 si_shutr(si);
874 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100875 req->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100876
877 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
878
Willy Tarreau87b09662015-04-03 00:22:06 +0200879 /* no stream was ever accounted for this server */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100880 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100881 if (s->srv_error)
882 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100883 return;
884 }
885
886 /* We are facing a retryable error, but we don't want to run a
887 * turn-around now, as the problem is likely a source port
888 * allocation problem, so we want to retry now.
889 */
890 si->state = SI_ST_CER;
891 si->flags &= ~SI_FL_ERR;
Willy Tarreau7b8c4f92014-11-28 15:15:44 +0100892 sess_update_st_cer(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100893 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
894 return;
895 }
896 else if (si->state == SI_ST_QUE) {
897 /* connection request was queued, check for any update */
898 if (!s->pend_pos) {
899 /* The connection is not in the queue anymore. Either
900 * we have a server connection slot available and we
901 * go directly to the assigned state, or we need to
902 * load-balance first and go to the INI state.
903 */
904 si->exp = TICK_ETERNITY;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200905 if (unlikely(!(s->flags & SF_ASSIGNED)))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100906 si->state = SI_ST_REQ;
907 else {
908 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
909 si->state = SI_ST_ASS;
910 }
911 return;
912 }
913
914 /* Connection request still in queue... */
915 if (si->flags & SI_FL_EXP) {
916 /* ... and timeout expired */
917 si->exp = TICK_ETERNITY;
918 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau827aee92011-03-10 16:55:02 +0100919 if (srv)
920 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100921 s->be->be_counters.failed_conns++;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200922 si_shutr(si);
923 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +0100924 req->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100925 if (!si->err_type)
926 si->err_type = SI_ET_QUEUE_TO;
927 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100928 if (s->srv_error)
929 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100930 return;
931 }
932
933 /* Connection remains in queue, check if we have to abort it */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700934 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100935 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100936 si->err_type |= SI_ET_QUEUE_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700937 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100938 }
939
940 /* Nothing changed */
941 return;
942 }
943 else if (si->state == SI_ST_TAR) {
944 /* Connection request might be aborted */
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700945 if (check_req_may_abort(req, s)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100946 si->err_type |= SI_ET_CONN_ABRT;
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700947 goto abort_connection;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100948 }
949
950 if (!(si->flags & SI_FL_EXP))
951 return; /* still in turn-around */
952
953 si->exp = TICK_ETERNITY;
954
Willy Tarreau87b09662015-04-03 00:22:06 +0200955 /* we keep trying on the same server as long as the stream is
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100956 * marked "assigned".
957 * FIXME: Should we force a redispatch attempt when the server is down ?
958 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200959 if (s->flags & SF_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100960 si->state = SI_ST_ASS;
961 else
962 si->state = SI_ST_REQ;
963 return;
964 }
Frederik Deweerdt6cd8d132016-04-07 09:01:04 -0700965 return;
966
967abort_connection:
968 /* give up */
969 si->exp = TICK_ETERNITY;
970 si_shutr(si);
971 si_shutw(si);
972 si->state = SI_ST_CLO;
973 if (s->srv_error)
974 s->srv_error(s, si);
975 return;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100976}
977
Willy Tarreau87b09662015-04-03 00:22:06 +0200978/* Set correct stream termination flags in case no analyser has done it. It
Simon Hormandec5be42011-06-08 09:19:07 +0900979 * also counts a failed request if the server state has not reached the request
980 * stage.
981 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200982static void sess_set_term_flags(struct stream *s)
Simon Hormandec5be42011-06-08 09:19:07 +0900983{
Willy Tarreaue7dff022015-04-03 01:14:29 +0200984 if (!(s->flags & SF_FINST_MASK)) {
Simon Hormandec5be42011-06-08 09:19:07 +0900985 if (s->si[1].state < SI_ST_REQ) {
986
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200987 strm_fe(s)->fe_counters.failed_req++;
Willy Tarreau2c1068c2015-09-23 12:21:21 +0200988 if (strm_li(s) && strm_li(s)->counters)
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200989 strm_li(s)->counters->failed_req++;
Simon Hormandec5be42011-06-08 09:19:07 +0900990
Willy Tarreaue7dff022015-04-03 01:14:29 +0200991 s->flags |= SF_FINST_R;
Simon Hormandec5be42011-06-08 09:19:07 +0900992 }
993 else if (s->si[1].state == SI_ST_QUE)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200994 s->flags |= SF_FINST_Q;
Simon Hormandec5be42011-06-08 09:19:07 +0900995 else if (s->si[1].state < SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200996 s->flags |= SF_FINST_C;
Simon Hormandec5be42011-06-08 09:19:07 +0900997 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200998 s->flags |= SF_FINST_D;
Simon Hormandec5be42011-06-08 09:19:07 +0900999 else
Willy Tarreaue7dff022015-04-03 01:14:29 +02001000 s->flags |= SF_FINST_L;
Simon Hormandec5be42011-06-08 09:19:07 +09001001 }
1002}
1003
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001004/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001005 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1006 * a real connection to a server, indicating that a server has been assigned,
1007 * or SI_ST_EST for a successful connection to an applet. It may also return
1008 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001009 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001010static void sess_prepare_conn_req(struct stream *s)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001011{
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001012 struct stream_interface *si = &s->si[1];
1013
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001014 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 +01001015 now_ms, __FUNCTION__,
1016 s,
CJ Ess6eac32e2015-05-02 16:35:24 -04001017 &s->req, &s->res,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001018 s->req.rex, s->res.wex,
1019 s->req.flags, s->res.flags,
CJ Ess6eac32e2015-05-02 16:35:24 -04001020 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 +01001021
1022 if (si->state != SI_ST_REQ)
1023 return;
1024
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001025 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1026 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001027 struct appctx *appctx = objt_appctx(si->end);
1028
1029 if (!appctx || appctx->applet != __objt_applet(s->target))
1030 appctx = stream_int_register_handler(si, objt_applet(s->target));
1031
1032 if (!appctx) {
1033 /* No more memory, let's immediately abort. Force the
1034 * error code to ignore the ERR_LOCAL which is not a
1035 * real error.
1036 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001037 s->flags &= ~(SF_ERR_MASK | SF_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001038
1039 si_shutr(si);
1040 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001041 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001042 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001043 si->state = SI_ST_CLO;
1044 if (s->srv_error)
1045 s->srv_error(s, si);
1046 return;
1047 }
1048
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001049 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001050 si->state = SI_ST_EST;
1051 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001052 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001053 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001054 return;
1055 }
1056
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001057 /* Try to assign a server */
1058 if (srv_redispatch_connect(s) != 0) {
1059 /* We did not get a server. Either we queued the
1060 * connection request, or we encountered an error.
1061 */
1062 if (si->state == SI_ST_QUE)
1063 return;
1064
1065 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001066 si_shutr(si);
1067 si_shutw(si);
Willy Tarreau103197d2014-11-28 15:26:12 +01001068 s->req.flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001069 if (!si->err_type)
1070 si->err_type = SI_ET_CONN_OTHER;
1071 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001072 if (s->srv_error)
1073 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001074 return;
1075 }
1076
1077 /* The server is assigned */
1078 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1079 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001080 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001081}
1082
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001083/* This function parses the use-service action ruleset. It executes
1084 * the associated ACL and set an applet as a stream or txn final node.
1085 * it returns ACT_RET_ERR if an error occurs, the proxy left in
1086 * consistent state. It returns ACT_RET_STOP in succes case because
1087 * use-service must be a terminal action. Returns ACT_RET_YIELD
1088 * if the initialisation function require more data.
1089 */
1090enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
1091 struct session *sess, struct stream *s, int flags)
1092
1093{
1094 struct appctx *appctx;
1095
1096 /* Initialises the applet if it is required. */
1097 if (flags & ACT_FLAG_FIRST) {
1098 /* Register applet. this function schedules the applet. */
1099 s->target = &rule->applet.obj_type;
1100 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target))))
1101 return ACT_RET_ERR;
1102
1103 /* Initialise the context. */
1104 appctx = si_appctx(&s->si[1]);
1105 memset(&appctx->ctx, 0, sizeof(appctx->ctx));
1106 appctx->rule = rule;
Willy Tarreau85cb0ae2017-08-23 10:52:20 +02001107
1108 /* enable the minimally required analyzers in case of HTTP
1109 * keep-alive to properly handle keep-alive and compression
1110 * on the HTTP response.
1111 */
1112 if (rule->from == ACT_F_HTTP_REQ) {
1113 s->req.analysers &= AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END;
1114 s->req.analysers |= AN_REQ_HTTP_XFER_BODY;
1115 }
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001116 }
1117 else
1118 appctx = si_appctx(&s->si[1]);
1119
1120 /* Stops the applet sheduling, in case of the init function miss
1121 * some data.
1122 */
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02001123 si_applet_stop_get(&s->si[1]);
1124
1125 /* Call initialisation. */
1126 if (rule->applet.init)
1127 switch (rule->applet.init(appctx, px, s)) {
1128 case 0: return ACT_RET_ERR;
1129 case 1: break;
1130 default: return ACT_RET_YIELD;
1131 }
1132
1133 /* Now we can schedule the applet. */
1134 si_applet_cant_get(&s->si[1]);
1135 appctx_wakeup(appctx);
1136
1137 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
1138 sess->fe->fe_counters.intercepted_req++;
1139
1140 /* The flag SF_ASSIGNED prevent from server assignment. */
1141 s->flags |= SF_ASSIGNED;
1142
1143 return ACT_RET_STOP;
1144}
1145
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001146/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001147 * if appropriate. The default_backend rule is also considered, then the
1148 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001149 * It returns 1 if the processing can continue on next analysers, or zero if it
1150 * either needs more data or wants to immediately abort the request.
1151 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001152static int process_switching_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001153{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001154 struct persist_rule *prst_rule;
Willy Tarreau192252e2015-04-04 01:47:55 +02001155 struct session *sess = s->sess;
1156 struct proxy *fe = sess->fe;
Willy Tarreau4de91492010-01-22 19:10:05 +01001157
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001158 req->analysers &= ~an_bit;
1159 req->analyse_exp = TICK_ETERNITY;
1160
Willy Tarreau87b09662015-04-03 00:22:06 +02001161 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 +02001162 now_ms, __FUNCTION__,
1163 s,
1164 req,
1165 req->rex, req->wex,
1166 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001167 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001168 req->analysers);
1169
1170 /* now check whether we have some switching rules for this request */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001171 if (!(s->flags & SF_BE_ASSIGNED)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001172 struct switching_rule *rule;
1173
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001174 list_for_each_entry(rule, &fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001175 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001176
Willy Tarreauf51658d2014-04-23 01:21:56 +02001177 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001178 ret = acl_exec_cond(rule->cond, fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001179 ret = acl_pass(ret);
1180 if (rule->cond->pol == ACL_COND_UNLESS)
1181 ret = !ret;
1182 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001183
1184 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001185 /* If the backend name is dynamic, try to resolve the name.
1186 * If we can't resolve the name, or if any error occurs, break
1187 * the loop and fallback to the default backend.
1188 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001189 struct proxy *backend = NULL;
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001190
1191 if (rule->dynamic) {
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001192 struct chunk *tmp;
1193
1194 tmp = alloc_trash_chunk();
1195 if (!tmp)
1196 goto sw_failed;
1197
1198 if (build_logline(s, tmp->str, tmp->size, &rule->be.expr))
1199 backend = proxy_be_by_name(tmp->str);
1200
1201 free_trash_chunk(tmp);
1202 tmp = NULL;
1203
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001204 if (!backend)
1205 break;
1206 }
1207 else
1208 backend = rule->be.backend;
1209
Willy Tarreau87b09662015-04-03 00:22:06 +02001210 if (!stream_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001211 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001212 break;
1213 }
1214 }
1215
1216 /* To ensure correct connection accounting on the backend, we
1217 * have to assign one if it was not set (eg: a listen). This
1218 * measure also takes care of correctly setting the default
1219 * backend if any.
1220 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02001221 if (!(s->flags & SF_BE_ASSIGNED))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001222 if (!stream_set_backend(s, fe->defbe.be ? fe->defbe.be : s->be))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001223 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001224 }
1225
Willy Tarreaufb356202010-08-03 14:02:05 +02001226 /* 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 +02001227 if (fe == s->be) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001228 s->req.analysers &= ~AN_REQ_INSPECT_BE;
1229 s->req.analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001230 s->req.analysers &= ~AN_REQ_FLT_START_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001231 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001232
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001233 /* 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 +02001234 * persistence rule, and report that in the stream.
Willy Tarreau4de91492010-01-22 19:10:05 +01001235 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001236 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001237 int ret = 1;
1238
1239 if (prst_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001240 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 +01001241 ret = acl_pass(ret);
1242 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1243 ret = !ret;
1244 }
1245
1246 if (ret) {
1247 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001248 if (prst_rule->type == PERSIST_TYPE_FORCE) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001249 s->flags |= SF_FORCE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001250 } else {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001251 s->flags |= SF_IGNORE_PRST;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001252 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001253 break;
1254 }
1255 }
1256
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001257 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001258
1259 sw_failed:
1260 /* immediately abort this request in case of allocation failure */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001261 channel_abort(&s->req);
1262 channel_abort(&s->res);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001263
Willy Tarreaue7dff022015-04-03 01:14:29 +02001264 if (!(s->flags & SF_ERR_MASK))
1265 s->flags |= SF_ERR_RESOURCE;
1266 if (!(s->flags & SF_FINST_MASK))
1267 s->flags |= SF_FINST_R;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001268
Willy Tarreaueee5b512015-04-03 23:46:31 +02001269 if (s->txn)
1270 s->txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01001271 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001272 s->req.analyse_exp = TICK_ETERNITY;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001273 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001274}
1275
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001276/* This stream analyser works on a request. It applies all use-server rules on
1277 * it then returns 1. The data must already be present in the buffer otherwise
1278 * they won't match. It always returns 1.
1279 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001280static int process_server_rules(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001281{
1282 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001283 struct session *sess = s->sess;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001284 struct server_rule *rule;
1285
Willy Tarreau87b09662015-04-03 00:22:06 +02001286 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 +02001287 now_ms, __FUNCTION__,
1288 s,
1289 req,
1290 req->rex, req->wex,
1291 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001292 req->buf->i + req->buf->o,
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001293 req->analysers);
1294
Willy Tarreaue7dff022015-04-03 01:14:29 +02001295 if (!(s->flags & SF_ASSIGNED)) {
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001296 list_for_each_entry(rule, &px->server_rules, list) {
1297 int ret;
1298
Willy Tarreau192252e2015-04-04 01:47:55 +02001299 ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001300 ret = acl_pass(ret);
1301 if (rule->cond->pol == ACL_COND_UNLESS)
1302 ret = !ret;
1303
1304 if (ret) {
1305 struct server *srv = rule->srv.ptr;
1306
Emeric Brun52a91d32017-08-31 14:41:55 +02001307 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001308 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001309 (s->flags & SF_FORCE_PRST)) {
1310 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001311 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001312 break;
1313 }
1314 /* if the server is not UP, let's go on with next rules
1315 * just in case another one is suited.
1316 */
1317 }
1318 }
1319 }
1320
1321 req->analysers &= ~an_bit;
1322 req->analyse_exp = TICK_ETERNITY;
1323 return 1;
1324}
1325
Emeric Brun1d33b292010-01-04 15:47:17 +01001326/* This stream analyser works on a request. It applies all sticking rules on
1327 * it then returns 1. The data must already be present in the buffer otherwise
1328 * they won't match. It always returns 1.
1329 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001330static int process_sticking_rules(struct stream *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001331{
1332 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001333 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001334 struct sticking_rule *rule;
1335
Willy Tarreau87b09662015-04-03 00:22:06 +02001336 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 +01001337 now_ms, __FUNCTION__,
1338 s,
1339 req,
1340 req->rex, req->wex,
1341 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001342 req->buf->i,
Emeric Brun1d33b292010-01-04 15:47:17 +01001343 req->analysers);
1344
1345 list_for_each_entry(rule, &px->sticking_rules, list) {
1346 int ret = 1 ;
1347 int i;
1348
Willy Tarreau9667a802013-12-09 12:52:13 +01001349 /* Only the first stick store-request of each table is applied
1350 * and other ones are ignored. The purpose is to allow complex
1351 * configurations which look for multiple entries by decreasing
1352 * order of precision and to stop at the first which matches.
1353 * An example could be a store of the IP address from an HTTP
1354 * header first, then from the source if not found.
1355 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001356 for (i = 0; i < s->store_count; i++) {
1357 if (rule->table.t == s->store[i].table)
1358 break;
1359 }
1360
1361 if (i != s->store_count)
1362 continue;
1363
1364 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001365 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001366 ret = acl_pass(ret);
1367 if (rule->cond->pol == ACL_COND_UNLESS)
1368 ret = !ret;
1369 }
1370
1371 if (ret) {
1372 struct stktable_key *key;
1373
Willy Tarreau192252e2015-04-04 01:47:55 +02001374 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 +01001375 if (!key)
1376 continue;
1377
1378 if (rule->flags & STK_IS_MATCH) {
1379 struct stksess *ts;
1380
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001381 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001382 if (!(s->flags & SF_ASSIGNED)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001383 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001384 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001385
1386 /* srv found in table */
Willy Tarreau13c29de2010-06-06 16:40:39 +02001387 ptr = stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
1388 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Emeric Brun1d33b292010-01-04 15:47:17 +01001389 if (node) {
1390 struct server *srv;
1391
1392 srv = container_of(node, struct server, conf.id);
Emeric Brun52a91d32017-08-31 14:41:55 +02001393 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001394 (px->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02001395 (s->flags & SF_FORCE_PRST)) {
1396 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001397 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001398 }
1399 }
1400 }
Emeric Brun85e77c72010-09-23 18:16:52 +02001401 stktable_touch(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001402 }
1403 }
1404 if (rule->flags & STK_IS_STORE) {
1405 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1406 struct stksess *ts;
1407
1408 ts = stksess_new(rule->table.t, key);
1409 if (ts) {
1410 s->store[s->store_count].table = rule->table.t;
1411 s->store[s->store_count++].ts = ts;
1412 }
1413 }
1414 }
1415 }
1416 }
1417
1418 req->analysers &= ~an_bit;
1419 req->analyse_exp = TICK_ETERNITY;
1420 return 1;
1421}
1422
1423/* This stream analyser works on a response. It applies all store rules on it
1424 * then returns 1. The data must already be present in the buffer otherwise
1425 * they won't match. It always returns 1.
1426 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001427static int process_store_rules(struct stream *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001428{
1429 struct proxy *px = s->be;
Willy Tarreau192252e2015-04-04 01:47:55 +02001430 struct session *sess = s->sess;
Emeric Brun1d33b292010-01-04 15:47:17 +01001431 struct sticking_rule *rule;
1432 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001433 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001434
Willy Tarreau87b09662015-04-03 00:22:06 +02001435 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 +01001436 now_ms, __FUNCTION__,
1437 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001438 rep,
1439 rep->rex, rep->wex,
1440 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001441 rep->buf->i,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001442 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001443
1444 list_for_each_entry(rule, &px->storersp_rules, list) {
1445 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001446
Willy Tarreau9667a802013-12-09 12:52:13 +01001447 /* Only the first stick store-response of each table is applied
1448 * and other ones are ignored. The purpose is to allow complex
1449 * configurations which look for multiple entries by decreasing
1450 * order of precision and to stop at the first which matches.
1451 * An example could be a store of a set-cookie value, with a
1452 * fallback to a parameter found in a 302 redirect.
1453 *
1454 * The store-response rules are not allowed to override the
1455 * store-request rules for the same table, but they may coexist.
1456 * Thus we can have up to one store-request entry and one store-
1457 * response entry for the same table at any time.
1458 */
1459 for (i = nbreq; i < s->store_count; i++) {
1460 if (rule->table.t == s->store[i].table)
1461 break;
1462 }
1463
1464 /* skip existing entries for this table */
1465 if (i < s->store_count)
1466 continue;
1467
Emeric Brun1d33b292010-01-04 15:47:17 +01001468 if (rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001469 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001470 ret = acl_pass(ret);
1471 if (rule->cond->pol == ACL_COND_UNLESS)
1472 ret = !ret;
1473 }
1474
1475 if (ret) {
1476 struct stktable_key *key;
1477
Willy Tarreau192252e2015-04-04 01:47:55 +02001478 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 +01001479 if (!key)
1480 continue;
1481
Willy Tarreau37e340c2013-12-06 23:05:21 +01001482 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001483 struct stksess *ts;
1484
1485 ts = stksess_new(rule->table.t, key);
1486 if (ts) {
1487 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001488 s->store[s->store_count++].ts = ts;
1489 }
1490 }
1491 }
1492 }
1493
1494 /* process store request and store response */
1495 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001496 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001497 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001498
Willy Tarreauc93cd162014-05-13 15:54:22 +02001499 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001500 stksess_free(s->store[i].table, s->store[i].ts);
1501 s->store[i].ts = NULL;
1502 continue;
1503 }
1504
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001505 ts = stktable_lookup(s->store[i].table, s->store[i].ts);
1506 if (ts) {
1507 /* the entry already existed, we can free ours */
Emeric Brun85e77c72010-09-23 18:16:52 +02001508 stktable_touch(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001509 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001510 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001511 else
Emeric Brun85e77c72010-09-23 18:16:52 +02001512 ts = stktable_store(s->store[i].table, s->store[i].ts, 1);
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001513
1514 s->store[i].ts = NULL;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001515 ptr = stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001516 stktable_data_cast(ptr, server_id) = objt_server(s->target)->puid;
Emeric Brun1d33b292010-01-04 15:47:17 +01001517 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001518 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001519
1520 rep->analysers &= ~an_bit;
1521 rep->analyse_exp = TICK_ETERNITY;
1522 return 1;
1523}
1524
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001525/* This macro is very specific to the function below. See the comments in
Willy Tarreau87b09662015-04-03 00:22:06 +02001526 * process_stream() below to understand the logic and the tests.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001527 */
1528#define UPDATE_ANALYSERS(real, list, back, flag) { \
1529 list = (((list) & ~(flag)) | ~(back)) & (real); \
1530 back = real; \
1531 if (!(list)) \
1532 break; \
1533 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1534 continue; \
1535}
1536
Christopher Fauleta9215b72016-05-11 17:06:28 +02001537/* These 2 following macros call an analayzer for the specified channel if the
1538 * right flag is set. The first one is used for "filterable" analyzers. If a
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001539 * stream has some registered filters, pre and post analyaze callbacks are
Christopher Faulet0184ea72017-01-05 14:06:34 +01001540 * called. The second are used for other analyzers (AN_REQ/RES_FLT_* and
Christopher Fauleta9215b72016-05-11 17:06:28 +02001541 * AN_REQ/RES_HTTP_XFER_BODY) */
1542#define FLT_ANALYZE(strm, chn, fun, list, back, flag, ...) \
1543 { \
1544 if ((list) & (flag)) { \
1545 if (HAS_FILTERS(strm)) { \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001546 if (!flt_pre_analyze((strm), (chn), (flag))) \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001547 break; \
1548 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1549 break; \
Christopher Faulet3a394fa2016-05-11 17:13:39 +02001550 if (!flt_post_analyze((strm), (chn), (flag))) \
1551 break; \
Christopher Fauleta9215b72016-05-11 17:06:28 +02001552 } \
1553 else { \
1554 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1555 break; \
1556 } \
1557 UPDATE_ANALYSERS((chn)->analysers, (list), \
1558 (back), (flag)); \
1559 } \
1560 }
1561
1562#define ANALYZE(strm, chn, fun, list, back, flag, ...) \
1563 { \
1564 if ((list) & (flag)) { \
1565 if (!fun((strm), (chn), (flag), ##__VA_ARGS__)) \
1566 break; \
1567 UPDATE_ANALYSERS((chn)->analysers, (list), \
1568 (back), (flag)); \
1569 } \
1570 }
1571
Willy Tarreau87b09662015-04-03 00:22:06 +02001572/* Processes the client, server, request and response jobs of a stream task,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001573 * then puts it back to the wait queue in a clean state, or cleans up its
1574 * resources if it must be deleted. Returns in <next> the date the task wants
1575 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1576 * nothing too many times, the request and response buffers flags are monitored
1577 * and each function is called only if at least another function has changed at
1578 * least one flag it is interested in.
1579 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001580struct task *process_stream(struct task *t)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001581{
Willy Tarreau827aee92011-03-10 16:55:02 +01001582 struct server *srv;
Willy Tarreau87b09662015-04-03 00:22:06 +02001583 struct stream *s = t->context;
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001584 struct session *sess = s->sess;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001585 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001586 unsigned int rq_prod_last, rq_cons_last;
1587 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001588 unsigned int req_ana_back;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001589 struct channel *req, *res;
1590 struct stream_interface *si_f, *si_b;
1591
1592 req = &s->req;
1593 res = &s->res;
1594
1595 si_f = &s->si[0];
1596 si_b = &s->si[1];
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001597
1598 //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 +01001599 // si_f->state, si_b->state, si_b->err_type, req->flags, res->flags);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001600
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001601 /* this data may be no longer valid, clear it */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001602 if (s->txn)
1603 memset(&s->txn->auth, 0, sizeof(s->txn->auth));
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001604
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001605 /* This flag must explicitly be set every time */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001606 req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1607 res->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001608
1609 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001610 rqf_last = req->flags & ~CF_MASK_ANALYSER;
1611 rpf_last = res->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001612
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001613 /* we don't want the stream interface functions to recursively wake us up */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001614 si_f->flags |= SI_FL_DONT_WAKE;
1615 si_b->flags |= SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001616
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001617 /* update pending events */
1618 s->pending_events |= (t->state & TASK_WOKEN_ANY);
1619
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001620 /* 1a: Check for low level timeouts if needed. We just set a flag on
1621 * stream interfaces when their timeouts have expired.
1622 */
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001623 if (unlikely(s->pending_events & TASK_WOKEN_TIMER)) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001624 stream_int_check_timeouts(si_f);
1625 stream_int_check_timeouts(si_b);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001626
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001627 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001628 * for future reads or writes. Note: this will also concern upper layers
1629 * but we do not touch any other flag. We must be careful and correctly
1630 * detect state changes when calling them.
1631 */
1632
Willy Tarreau8f128b42014-11-28 15:07:47 +01001633 channel_check_timeouts(req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001634
Willy Tarreau8f128b42014-11-28 15:07:47 +01001635 if (unlikely((req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1636 si_b->flags |= SI_FL_NOLINGER;
1637 si_shutw(si_b);
Willy Tarreau14641402009-12-29 14:49:56 +01001638 }
1639
Willy Tarreau8f128b42014-11-28 15:07:47 +01001640 if (unlikely((req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1641 if (si_f->flags & SI_FL_NOHALF)
1642 si_f->flags |= SI_FL_NOLINGER;
1643 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001644 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001645
Willy Tarreau8f128b42014-11-28 15:07:47 +01001646 channel_check_timeouts(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001647
Willy Tarreau8f128b42014-11-28 15:07:47 +01001648 if (unlikely((res->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
1649 si_f->flags |= SI_FL_NOLINGER;
1650 si_shutw(si_f);
Willy Tarreau14641402009-12-29 14:49:56 +01001651 }
1652
Willy Tarreau8f128b42014-11-28 15:07:47 +01001653 if (unlikely((res->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
1654 if (si_b->flags & SI_FL_NOHALF)
1655 si_b->flags |= SI_FL_NOLINGER;
1656 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001657 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001658
Christopher Fauleta00d8172016-11-10 14:58:05 +01001659 if (HAS_FILTERS(s))
1660 flt_stream_check_timeouts(s);
1661
Willy Tarreau798f4322012-11-08 14:49:17 +01001662 /* Once in a while we're woken up because the task expires. But
1663 * this does not necessarily mean that a timeout has been reached.
Willy Tarreau87b09662015-04-03 00:22:06 +02001664 * So let's not run a whole stream processing if only an expiration
Willy Tarreau798f4322012-11-08 14:49:17 +01001665 * timeout needs to be refreshed.
1666 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001667 if (!((req->flags | res->flags) &
Willy Tarreau798f4322012-11-08 14:49:17 +01001668 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
1669 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01001670 !((si_f->flags | si_b->flags) & (SI_FL_EXP|SI_FL_ERR)) &&
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001671 ((s->pending_events & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER)) {
Willy Tarreau5fb04712016-05-04 10:18:37 +02001672 si_f->flags &= ~SI_FL_DONT_WAKE;
1673 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau798f4322012-11-08 14:49:17 +01001674 goto update_exp_and_leave;
Willy Tarreau5fb04712016-05-04 10:18:37 +02001675 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001676 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001677
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001678 /* below we may emit error messages so we have to ensure that we have
1679 * our buffers properly allocated.
1680 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001681 if (!stream_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001682 /* No buffer available, we've been subscribed to the list of
1683 * buffer waiters, let's wait for our turn.
1684 */
Willy Tarreau5fb04712016-05-04 10:18:37 +02001685 si_f->flags &= ~SI_FL_DONT_WAKE;
1686 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001687 goto update_exp_and_leave;
1688 }
1689
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001690 /* 1b: check for low-level errors reported at the stream interface.
1691 * First we check if it's a retryable error (in which case we don't
1692 * want to tell the buffer). Otherwise we report the error one level
1693 * upper by setting flags into the buffers. Note that the side towards
1694 * the client cannot have connect (hence retryable) errors. Also, the
1695 * connection setup code must be able to deal with any type of abort.
1696 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001697 srv = objt_server(s->target);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001698 if (unlikely(si_f->flags & SI_FL_ERR)) {
1699 if (si_f->state == SI_ST_EST || si_f->state == SI_ST_DIS) {
1700 si_shutr(si_f);
1701 si_shutw(si_f);
1702 stream_int_report_error(si_f);
1703 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001704 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001705 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001706 if (srv)
1707 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001708 if (!(s->flags & SF_ERR_MASK))
1709 s->flags |= SF_ERR_CLICL;
1710 if (!(s->flags & SF_FINST_MASK))
1711 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001712 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001713 }
1714 }
1715
Willy Tarreau8f128b42014-11-28 15:07:47 +01001716 if (unlikely(si_b->flags & SI_FL_ERR)) {
1717 if (si_b->state == SI_ST_EST || si_b->state == SI_ST_DIS) {
1718 si_shutr(si_b);
1719 si_shutw(si_b);
1720 stream_int_report_error(si_b);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001721 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001722 if (srv)
1723 srv->counters.failed_resp++;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001724 if (!(req->analysers) && !(res->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001725 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001726 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001727 if (srv)
1728 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001729 if (!(s->flags & SF_ERR_MASK))
1730 s->flags |= SF_ERR_SRVCL;
1731 if (!(s->flags & SF_FINST_MASK))
1732 s->flags |= SF_FINST_D;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001733 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001734 }
1735 /* note: maybe we should process connection errors here ? */
1736 }
1737
Willy Tarreau8f128b42014-11-28 15:07:47 +01001738 if (si_b->state == SI_ST_CON) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001739 /* we were trying to establish a connection on the server side,
1740 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1741 */
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001742 if (unlikely(!sess_update_st_con_tcp(s)))
1743 sess_update_st_cer(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01001744 else if (si_b->state == SI_ST_EST)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01001745 sess_establish(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001746
1747 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1748 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1749 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1750 */
1751 }
1752
Willy Tarreau8f128b42014-11-28 15:07:47 +01001753 rq_prod_last = si_f->state;
1754 rq_cons_last = si_b->state;
1755 rp_cons_last = si_f->state;
1756 rp_prod_last = si_b->state;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001757
1758 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001759 /* Check for connection closure */
1760
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001761 DPRINTF(stderr,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001762 "[%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 +01001763 now_ms, __FUNCTION__, __LINE__,
1764 t,
1765 s, s->flags,
Willy Tarreau8f128b42014-11-28 15:07:47 +01001766 req, res,
1767 req->rex, res->wex,
1768 req->flags, res->flags,
1769 req->buf->i, req->buf->o, res->buf->i, res->buf->o, si_f->state, si_b->state,
1770 si_f->err_type, si_b->err_type,
1771 si_b->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001772
1773 /* nothing special to be done on client side */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001774 if (unlikely(si_f->state == SI_ST_DIS))
1775 si_f->state = SI_ST_CLO;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001776
1777 /* When a server-side connection is released, we have to count it and
1778 * check for pending connections on this server.
1779 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001780 if (unlikely(si_b->state == SI_ST_DIS)) {
1781 si_b->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001782 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001783 if (srv) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02001784 if (s->flags & SF_CURR_SESS) {
1785 s->flags &= ~SF_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +01001786 srv->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001787 }
1788 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001789 if (may_dequeue_tasks(srv, s->be))
1790 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001791 }
1792 }
1793
1794 /*
1795 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1796 * at this point.
1797 */
1798
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001799 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001800 /* Analyse request */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001801 if (((req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1802 ((req->flags ^ rqf_last) & CF_MASK_STATIC) ||
1803 si_f->state != rq_prod_last ||
1804 si_b->state != rq_cons_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001805 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001806 unsigned int flags = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001807
Willy Tarreau8f128b42014-11-28 15:07:47 +01001808 if (si_f->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001809 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001810 unsigned int ana_list;
1811 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001812
Willy Tarreau90deb182010-01-07 00:20:41 +01001813 /* it's up to the analysers to stop new connections,
1814 * disable reading or closing. Note: if an analyser
1815 * disables any of these bits, it is responsible for
1816 * enabling them again when it disables itself, so
1817 * that other analysers are called in similar conditions.
1818 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001819 channel_auto_read(req);
1820 channel_auto_connect(req);
1821 channel_auto_close(req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001822
1823 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001824 * req->analysers, following the bit order from LSB
Willy Tarreauedcf6682008-11-30 23:15:34 +01001825 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001826 * the list when not needed. Any analyser may return 0
1827 * to break out of the loop, either because of missing
1828 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001829 * kill the stream. We loop at least once through each
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001830 * analyser, and we may loop again if other analysers
1831 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001832 *
1833 * We build a list of analysers to run. We evaluate all
1834 * of these analysers in the order of the lower bit to
1835 * the higher bit. This ordering is very important.
1836 * An analyser will often add/remove other analysers,
1837 * including itself. Any changes to itself have no effect
1838 * on the loop. If it removes any other analysers, we
1839 * want those analysers not to be called anymore during
1840 * this loop. If it adds an analyser that is located
1841 * after itself, we want it to be scheduled for being
1842 * processed during the loop. If it adds an analyser
1843 * which is located before it, we want it to switch to
1844 * it immediately, even if it has already been called
1845 * once but removed since.
1846 *
1847 * In order to achieve this, we compare the analyser
1848 * list after the call with a copy of it before the
1849 * call. The work list is fed with analyser bits that
1850 * appeared during the call. Then we compare previous
1851 * work list with the new one, and check the bits that
1852 * appeared. If the lowest of these bits is lower than
1853 * the current bit, it means we have enabled a previous
1854 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001855 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001856
Willy Tarreau8f128b42014-11-28 15:07:47 +01001857 ana_list = ana_back = req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001858 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001859 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001860 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_FE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001861 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_FE);
1862 FLT_ANALYZE(s, req, http_wait_for_request, ana_list, ana_back, AN_REQ_WAIT_HTTP);
1863 FLT_ANALYZE(s, req, http_wait_for_request_body, ana_list, ana_back, AN_REQ_HTTP_BODY);
1864 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE, sess->fe);
1865 FLT_ANALYZE(s, req, process_switching_rules, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001866 ANALYZE (s, req, flt_start_analyze, ana_list, ana_back, AN_REQ_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001867 FLT_ANALYZE(s, req, tcp_inspect_request, ana_list, ana_back, AN_REQ_INSPECT_BE);
1868 FLT_ANALYZE(s, req, http_process_req_common, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE, s->be);
1869 FLT_ANALYZE(s, req, http_process_tarpit, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
1870 FLT_ANALYZE(s, req, process_server_rules, ana_list, ana_back, AN_REQ_SRV_RULES);
1871 FLT_ANALYZE(s, req, http_process_request, ana_list, ana_back, AN_REQ_HTTP_INNER);
1872 FLT_ANALYZE(s, req, tcp_persist_rdp_cookie, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
1873 FLT_ANALYZE(s, req, process_sticking_rules, ana_list, ana_back, AN_REQ_STICKING_RULES);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001874 ANALYZE (s, req, flt_analyze_http_headers, ana_list, ana_back, AN_REQ_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001875 ANALYZE (s, req, http_request_forward_body, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001876 ANALYZE (s, req, flt_xfer_data, ana_list, ana_back, AN_REQ_FLT_XFER_DATA);
1877 ANALYZE (s, req, flt_end_analyze, ana_list, ana_back, AN_REQ_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001878 break;
1879 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001880 }
Willy Tarreau84455332009-03-15 22:34:05 +01001881
Willy Tarreau8f128b42014-11-28 15:07:47 +01001882 rq_prod_last = si_f->state;
1883 rq_cons_last = si_b->state;
1884 req->flags &= ~CF_WAKE_ONCE;
1885 rqf_last = req->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001886
Willy Tarreau8f128b42014-11-28 15:07:47 +01001887 if ((req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001888 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001889 }
1890
Willy Tarreau576507f2010-01-07 00:09:04 +01001891 /* we'll monitor the request analysers while parsing the response,
1892 * because some response analysers may indirectly enable new request
1893 * analysers (eg: HTTP keep-alive).
1894 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001895 req_ana_back = req->analysers;
Willy Tarreau576507f2010-01-07 00:09:04 +01001896
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001897 resync_response:
1898 /* Analyse response */
1899
Willy Tarreau8f128b42014-11-28 15:07:47 +01001900 if (((res->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
1901 (res->flags ^ rpf_last) & CF_MASK_STATIC ||
1902 si_f->state != rp_cons_last ||
1903 si_b->state != rp_prod_last ||
Christopher Faulet9d810ca2016-12-08 22:33:52 +01001904 s->pending_events & TASK_WOKEN_MSG) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001905 unsigned int flags = res->flags;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001906
Willy Tarreau8f128b42014-11-28 15:07:47 +01001907 if (si_b->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001908 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001909 unsigned int ana_list;
1910 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001911
Willy Tarreau90deb182010-01-07 00:20:41 +01001912 /* it's up to the analysers to stop disable reading or
1913 * closing. Note: if an analyser disables any of these
1914 * bits, it is responsible for enabling them again when
1915 * it disables itself, so that other analysers are called
1916 * in similar conditions.
1917 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001918 channel_auto_read(res);
1919 channel_auto_close(res);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001920
1921 /* We will call all analysers for which a bit is set in
Willy Tarreau8f128b42014-11-28 15:07:47 +01001922 * res->analysers, following the bit order from LSB
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001923 * to MSB. The analysers must remove themselves from
1924 * the list when not needed. Any analyser may return 0
1925 * to break out of the loop, either because of missing
1926 * data to take a decision, or because it decides to
Willy Tarreau87b09662015-04-03 00:22:06 +02001927 * kill the stream. We loop at least once through each
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001928 * analyser, and we may loop again if other analysers
1929 * are added in the middle.
1930 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001931
Willy Tarreau8f128b42014-11-28 15:07:47 +01001932 ana_list = ana_back = res->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001933 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001934 /* Warning! ensure that analysers are always placed in ascending order! */
Christopher Faulet0184ea72017-01-05 14:06:34 +01001935 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_FE);
1936 ANALYZE (s, res, flt_start_analyze, ana_list, ana_back, AN_RES_FLT_START_BE);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001937 FLT_ANALYZE(s, res, tcp_inspect_response, ana_list, ana_back, AN_RES_INSPECT);
1938 FLT_ANALYZE(s, res, http_wait_for_response, ana_list, ana_back, AN_RES_WAIT_HTTP);
1939 FLT_ANALYZE(s, res, process_store_rules, ana_list, ana_back, AN_RES_STORE_RULES);
1940 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 +01001941 ANALYZE (s, res, flt_analyze_http_headers, ana_list, ana_back, AN_RES_FLT_HTTP_HDRS);
Christopher Fauleta9215b72016-05-11 17:06:28 +02001942 ANALYZE (s, res, http_response_forward_body, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Christopher Faulet0184ea72017-01-05 14:06:34 +01001943 ANALYZE (s, res, flt_xfer_data, ana_list, ana_back, AN_RES_FLT_XFER_DATA);
1944 ANALYZE (s, res, flt_end_analyze, ana_list, ana_back, AN_RES_FLT_END);
Willy Tarreaue34070e2010-01-08 00:32:27 +01001945 break;
1946 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001947 }
1948
Willy Tarreau8f128b42014-11-28 15:07:47 +01001949 rp_cons_last = si_f->state;
1950 rp_prod_last = si_b->state;
Christopher Fauletcdaea892017-07-06 15:49:30 +02001951 res->flags &= ~CF_WAKE_ONCE;
Willy Tarreau8f128b42014-11-28 15:07:47 +01001952 rpf_last = res->flags;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001953
Willy Tarreau8f128b42014-11-28 15:07:47 +01001954 if ((res->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001955 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001956 }
1957
Willy Tarreau576507f2010-01-07 00:09:04 +01001958 /* maybe someone has added some request analysers, so we must check and loop */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001959 if (req->analysers & ~req_ana_back)
Willy Tarreau576507f2010-01-07 00:09:04 +01001960 goto resync_request;
1961
Willy Tarreau8f128b42014-11-28 15:07:47 +01001962 if ((req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01001963 goto resync_request;
1964
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001965 /* FIXME: here we should call protocol handlers which rely on
1966 * both buffers.
1967 */
1968
1969
1970 /*
Willy Tarreau87b09662015-04-03 00:22:06 +02001971 * Now we propagate unhandled errors to the stream. Normally
Willy Tarreauae526782010-03-04 20:34:23 +01001972 * we're just in a data phase here since it means we have not
1973 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001974 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001975 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02001976 if (unlikely(!(s->flags & SF_ERR_MASK))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01001977 if (req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001978 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01001979 req->analysers = 0;
1980 if (req->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001981 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001982 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001983 if (srv)
1984 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001985 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01001986 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001987 else if (req->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001988 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001989 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001990 if (srv)
1991 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001992 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01001993 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01001994 else if (req->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001995 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001996 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001997 if (srv)
1998 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02001999 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002000 }
2001 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002002 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002003 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002004 if (srv)
2005 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002006 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002007 }
Willy Tarreau84455332009-03-15 22:34:05 +01002008 sess_set_term_flags(s);
2009 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002010 else if (res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002011 /* Report it if the server got an error or a read timeout expired */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002012 res->analysers = 0;
2013 if (res->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002014 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002015 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002016 if (srv)
2017 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002018 s->flags |= SF_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002019 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002020 else if (res->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002021 s->be->be_counters.srv_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002022 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002023 if (srv)
2024 srv->counters.srv_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002025 s->flags |= SF_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002026 }
Willy Tarreau8f128b42014-11-28 15:07:47 +01002027 else if (res->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002028 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002029 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002030 if (srv)
2031 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002032 s->flags |= SF_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002033 }
2034 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002035 s->be->be_counters.cli_aborts++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002036 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002037 if (srv)
2038 srv->counters.cli_aborts++;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002039 s->flags |= SF_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002040 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002041 sess_set_term_flags(s);
2042 }
Willy Tarreau84455332009-03-15 22:34:05 +01002043 }
2044
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002045 /*
2046 * Here we take care of forwarding unhandled data. This also includes
2047 * connection establishments and shutdown requests.
2048 */
2049
2050
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002051 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002052 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002053 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002054 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002055 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002056 if (unlikely((!req->analysers || (req->analysers == AN_REQ_FLT_END && !(req->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002057 !(req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2058 (si_f->state >= SI_ST_EST) &&
2059 (req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002060 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002061 * attached to it. If any data are left in, we'll permit them to
2062 * move.
2063 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002064 channel_auto_read(req);
2065 channel_auto_connect(req);
2066 channel_auto_close(req);
2067 buffer_flush(req->buf);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002068
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002069 /* We'll let data flow between the producer (if still connected)
2070 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002071 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002072 if (!(req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002073 channel_forward_forever(req);
Willy Tarreau42529c32015-07-09 18:38:57 +02002074
2075 /* Just in order to support fetching HTTP contents after start
2076 * of forwarding when the HTTP forwarding analyser is not used,
2077 * we simply reset msg->sov so that HTTP rewinding points to the
2078 * headers.
2079 */
2080 if (s->txn)
2081 s->txn->req.sov = s->txn->req.eoh + s->txn->req.eol - req->buf->o;
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002082 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002083
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002084 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002085 if (!(req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2086 req->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002087 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002088 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->rcv_pipe) &&
2089 (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 +01002090 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002091 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2092 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002093 (req->flags & CF_STREAMER_FAST)))) {
2094 req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002095 }
2096
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002097 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002098 rqf_last = req->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002099
2100 /*
2101 * Now forward all shutdown requests between both sides of the buffer
2102 */
2103
Willy Tarreau520d95e2009-09-19 21:04:57 +02002104 /* first, let's check if the request buffer needs to shutdown(write), which may
2105 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002106 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2107 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002108 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002109 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002110 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002111 channel_shutw_now(req);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002112 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002113
2114 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002115 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2116 channel_is_empty(req))) {
2117 if (req->flags & CF_READ_ERROR)
2118 si_b->flags |= SI_FL_NOLINGER;
2119 si_shutw(si_b);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002120 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002121
2122 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002123 if (unlikely((req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
2124 !req->analysers))
2125 channel_shutr_now(req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002126
2127 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002128 if (unlikely((req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2129 if (si_f->flags & SI_FL_NOHALF)
2130 si_f->flags |= SI_FL_NOLINGER;
2131 si_shutr(si_f);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002132 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002133
Willy Tarreau520d95e2009-09-19 21:04:57 +02002134 /* it's possible that an upper layer has requested a connection setup or abort.
2135 * There are 2 situations where we decide to establish a new connection :
2136 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002137 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002138 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002139 if (si_b->state == SI_ST_INI) {
2140 if (!(req->flags & CF_SHUTW)) {
2141 if ((req->flags & CF_AUTO_CONNECT) || !channel_is_empty(req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002142 /* If we have an appctx, there is no connect method, so we
2143 * immediately switch to the connected state, otherwise we
2144 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002145 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002146 si_b->state = SI_ST_REQ; /* new connection requested */
2147 si_b->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002148 }
Willy Tarreau73201222009-08-16 18:27:24 +02002149 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002150 else {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002151 si_b->state = SI_ST_CLO; /* shutw+ini = abort */
2152 channel_shutw_now(req); /* fix buffer flags upon abort */
2153 channel_shutr_now(res);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002154 }
Willy Tarreau92795622009-03-06 12:51:23 +01002155 }
2156
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002157
2158 /* we may have a pending connection request, or a connection waiting
2159 * for completion.
2160 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002161 if (si_b->state >= SI_ST_REQ && si_b->state < SI_ST_CON) {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002162
2163 /* prune the request variables and swap to the response variables. */
2164 if (s->vars_reqres.scope != SCOPE_RES) {
Willy Tarreau6204cd92016-03-10 16:33:04 +01002165 vars_prune(&s->vars_reqres, s->sess, s);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02002166 vars_init(&s->vars_reqres, SCOPE_RES);
2167 }
2168
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002169 do {
2170 /* nb: step 1 might switch from QUE to ASS, but we first want
2171 * to give a chance to step 2 to perform a redirect if needed.
2172 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002173 if (si_b->state != SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002174 sess_update_stream_int(s);
Willy Tarreau8f128b42014-11-28 15:07:47 +01002175 if (si_b->state == SI_ST_REQ)
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002176 sess_prepare_conn_req(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002177
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002178 /* applets directly go to the ESTABLISHED state. Similarly,
2179 * servers experience the same fate when their connection
2180 * is reused.
2181 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002182 if (unlikely(si_b->state == SI_ST_EST))
Willy Tarreau7b8c4f92014-11-28 15:15:44 +01002183 sess_establish(s);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002184
Willy Tarreaub44c8732013-12-31 23:16:50 +01002185 /* Now we can add the server name to a header (if requested) */
2186 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
Willy Tarreau9c03b332015-09-07 19:32:33 +02002187 if ((si_b->state >= SI_ST_CON) && (si_b->state < SI_ST_CLO) &&
Willy Tarreaub44c8732013-12-31 23:16:50 +01002188 (s->be->server_id_hdr_name != NULL) &&
2189 (s->be->mode == PR_MODE_HTTP) &&
2190 objt_server(s->target)) {
Willy Tarreaueee5b512015-04-03 23:46:31 +02002191 http_send_name_header(s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002192 }
2193
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002194 srv = objt_server(s->target);
Willy Tarreaue7dff022015-04-03 01:14:29 +02002195 if (si_b->state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SF_REDIRECTABLE))
Willy Tarreau8f128b42014-11-28 15:07:47 +01002196 http_perform_server_redirect(s, si_b);
2197 } while (si_b->state == SI_ST_ASS);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002198 }
2199
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002200 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002201 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002202 goto resync_stream_interface;
2203
Willy Tarreau815a9b22010-07-27 17:15:12 +02002204 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002205 if ((req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002206 goto resync_request;
2207
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002208 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002209
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002210 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002211 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002212 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002213 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002214 */
Christopher Faulet35fe6992017-08-29 16:06:38 +02002215 if (unlikely((!res->analysers || (res->analysers == AN_RES_FLT_END && !(res->flags & CF_FLT_ANALYZE))) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002216 !(res->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
2217 (si_b->state >= SI_ST_EST) &&
2218 (res->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002219 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002220 * attached to it. If any data are left in, we'll permit them to
2221 * move.
2222 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002223 channel_auto_read(res);
2224 channel_auto_close(res);
2225 buffer_flush(res->buf);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002226
2227 /* We'll let data flow between the producer (if still connected)
2228 * to the consumer.
2229 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002230 if (!(res->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8bf242b2016-05-04 14:05:58 +02002231 channel_forward_forever(res);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002232
Willy Tarreau42529c32015-07-09 18:38:57 +02002233 /* Just in order to support fetching HTTP contents after start
2234 * of forwarding when the HTTP forwarding analyser is not used,
2235 * we simply reset msg->sov so that HTTP rewinding points to the
2236 * headers.
2237 */
2238 if (s->txn)
2239 s->txn->rsp.sov = s->txn->rsp.eoh + s->txn->rsp.eol - res->buf->o;
2240
Willy Tarreauce887fd2012-05-12 12:50:00 +02002241 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002242 * tunnel timeout set, use it now. Note that we must respect
2243 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002244 */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002245 if (!req->analysers && s->be->timeout.tunnel) {
2246 req->rto = req->wto = res->rto = res->wto =
Willy Tarreauce887fd2012-05-12 12:50:00 +02002247 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002248
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002249 if ((req->flags & CF_SHUTR) && tick_isset(sess->fe->timeout.clientfin))
2250 res->wto = sess->fe->timeout.clientfin;
Willy Tarreau8f128b42014-11-28 15:07:47 +01002251 if ((req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2252 res->rto = s->be->timeout.serverfin;
2253 if ((res->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2254 req->wto = s->be->timeout.serverfin;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002255 if ((res->flags & CF_SHUTW) && tick_isset(sess->fe->timeout.clientfin))
2256 req->rto = sess->fe->timeout.clientfin;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002257
Willy Tarreau8f128b42014-11-28 15:07:47 +01002258 req->rex = tick_add(now_ms, req->rto);
2259 req->wex = tick_add(now_ms, req->wto);
2260 res->rex = tick_add(now_ms, res->rto);
2261 res->wex = tick_add(now_ms, res->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002262 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002263 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002264
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002265 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002266 if (!(res->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
2267 res->to_forward &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002268 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002269 (objt_conn(si_f->end) && __objt_conn(si_f->end)->xprt && __objt_conn(si_f->end)->xprt->snd_pipe) &&
2270 (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 +01002271 (pipes_used < global.maxpipes) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002272 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2273 (((sess->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau8f128b42014-11-28 15:07:47 +01002274 (res->flags & CF_STREAMER_FAST)))) {
2275 res->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002276 }
2277
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002278 /* reflect what the L7 analysers have seen last */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002279 rpf_last = res->flags;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002280
2281 /*
2282 * Now forward all shutdown requests between both sides of the buffer
2283 */
2284
2285 /*
2286 * FIXME: this is probably where we should produce error responses.
2287 */
2288
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002289 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002290 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002291 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002292 channel_shutw_now(res);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002293 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002294
2295 /* shutdown(write) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002296 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
2297 channel_is_empty(res))) {
2298 si_shutw(si_f);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002299 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002300
2301 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002302 if (unlikely((res->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
2303 !res->analysers)
2304 channel_shutr_now(res);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002305
2306 /* shutdown(read) pending */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002307 if (unlikely((res->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
2308 if (si_b->flags & SI_FL_NOHALF)
2309 si_b->flags |= SI_FL_NOLINGER;
2310 si_shutr(si_b);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002311 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002312
Willy Tarreau8f128b42014-11-28 15:07:47 +01002313 if (si_f->state == SI_ST_DIS || si_b->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002314 goto resync_stream_interface;
2315
Willy Tarreau8f128b42014-11-28 15:07:47 +01002316 if (req->flags != rqf_last)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002317 goto resync_request;
2318
Willy Tarreau8f128b42014-11-28 15:07:47 +01002319 if ((res->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002320 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002321
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002322 /* we're interested in getting wakeups again */
Willy Tarreau8f128b42014-11-28 15:07:47 +01002323 si_f->flags &= ~SI_FL_DONT_WAKE;
2324 si_b->flags &= ~SI_FL_DONT_WAKE;
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002325
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002326 /* This is needed only when debugging is enabled, to indicate
2327 * client-side or server-side close. Please note that in the unlikely
2328 * event where both sides would close at once, the sequence is reported
2329 * on the server side first.
2330 */
2331 if (unlikely((global.mode & MODE_DEBUG) &&
2332 (!(global.mode & MODE_QUIET) ||
2333 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau8f128b42014-11-28 15:07:47 +01002334 if (si_b->state == SI_ST_CLO &&
2335 si_b->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002336 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002337 s->uniq_id, s->be->id,
Willy Tarreau585744b2017-08-24 14:31:19 +02002338 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->handle.fd : -1,
2339 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002340 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002341 }
2342
Willy Tarreau8f128b42014-11-28 15:07:47 +01002343 if (si_f->state == SI_ST_CLO &&
2344 si_f->prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002345 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002346 s->uniq_id, s->be->id,
Willy Tarreau585744b2017-08-24 14:31:19 +02002347 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->handle.fd : -1,
2348 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002349 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002350 }
2351 }
2352
Willy Tarreau8f128b42014-11-28 15:07:47 +01002353 if (likely((si_f->state != SI_ST_CLO) ||
2354 (si_b->state > SI_ST_INI && si_b->state < SI_ST_CLO))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002355
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002356 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED))
Willy Tarreau87b09662015-04-03 00:22:06 +02002357 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002358
Willy Tarreau563cc372015-04-19 18:13:56 +02002359 if (si_f->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002360 si_update(si_f);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002361
Willy Tarreau563cc372015-04-19 18:13:56 +02002362 if (si_b->state == SI_ST_EST)
Willy Tarreau8f128b42014-11-28 15:07:47 +01002363 si_update(si_b);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002364
Willy Tarreau8f128b42014-11-28 15:07:47 +01002365 req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2366 res->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2367 si_f->prev_state = si_f->state;
2368 si_b->prev_state = si_b->state;
2369 si_f->flags &= ~(SI_FL_ERR|SI_FL_EXP);
2370 si_b->flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002371
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002372 /* Trick: if a request is being waiting for the server to respond,
2373 * and if we know the server can timeout, we don't want the timeout
2374 * to expire on the client side first, but we're still interested
2375 * in passing data from the client to the server (eg: POST). Thus,
2376 * we can cancel the client's request timeout if the server's
2377 * request timeout is set and the server has not yet sent a response.
2378 */
2379
Willy Tarreau8f128b42014-11-28 15:07:47 +01002380 if ((res->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2381 (tick_isset(req->wex) || tick_isset(res->rex))) {
2382 req->flags |= CF_READ_NOEXP;
2383 req->rex = TICK_ETERNITY;
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002384 }
2385
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002386 /* Reset pending events now */
2387 s->pending_events = 0;
2388
Willy Tarreau798f4322012-11-08 14:49:17 +01002389 update_exp_and_leave:
Willy Tarreau5fb04712016-05-04 10:18:37 +02002390 /* Note: please ensure that if you branch here you disable SI_FL_DONT_WAKE */
Christopher Fauleta00d8172016-11-10 14:58:05 +01002391 t->expire = tick_first((tick_is_expired(t->expire, now_ms) ? 0 : t->expire),
2392 tick_first(tick_first(req->rex, req->wex),
2393 tick_first(res->rex, res->wex)));
Willy Tarreaudef0d222016-11-08 22:03:00 +01002394 if (!req->analysers)
2395 req->analyse_exp = TICK_ETERNITY;
2396
2397 if ((sess->fe->options & PR_O_CONTSTATS) && (s->flags & SF_BE_ASSIGNED) &&
2398 (!tick_isset(req->analyse_exp) || tick_is_expired(req->analyse_exp, now_ms)))
2399 req->analyse_exp = tick_add(now_ms, 5000);
2400
2401 t->expire = tick_first(t->expire, req->analyse_exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002402
Willy Tarreau8f128b42014-11-28 15:07:47 +01002403 if (si_f->exp)
2404 t->expire = tick_first(t->expire, si_f->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002405
Willy Tarreau8f128b42014-11-28 15:07:47 +01002406 if (si_b->exp)
2407 t->expire = tick_first(t->expire, si_b->exp);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002408
2409#ifdef DEBUG_FULL
Willy Tarreau127334e2009-03-28 10:47:26 +01002410 fprintf(stderr,
2411 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2412 " 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 +01002413 now_ms, t->expire, req->rex, req->wex, req->analyse_exp,
2414 res->rex, res->wex, si_f->exp, si_b->exp, si_f->state, si_b->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002415#endif
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002416
2417#ifdef DEBUG_DEV
2418 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002419 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002420 ABORT_NOW();
2421#endif
Christopher Faulet9d810ca2016-12-08 22:33:52 +01002422 s->pending_events &= ~(TASK_WOKEN_TIMER | TASK_WOKEN_RES);
Willy Tarreau87b09662015-04-03 00:22:06 +02002423 stream_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002424 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002425 }
2426
Willy Tarreaue7dff022015-04-03 01:14:29 +02002427 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002428 s->be->beconn--;
Willy Tarreau6f5e4b92017-09-15 09:07:56 +02002429
Willy Tarreau05f50472017-09-15 09:19:58 +02002430 if (sess->listener)
2431 listener_release(sess->listener);
Willy Tarreau07687c12011-07-24 23:55:06 +02002432
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002433 if (unlikely((global.mode & MODE_DEBUG) &&
2434 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002435 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002436 s->uniq_id, s->be->id,
Willy Tarreau585744b2017-08-24 14:31:19 +02002437 objt_conn(si_f->end) ? (unsigned short)objt_conn(si_f->end)->handle.fd : -1,
2438 objt_conn(si_b->end) ? (unsigned short)objt_conn(si_b->end)->handle.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002439 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002440 }
2441
2442 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02002443 stream_process_counters(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002444
Willy Tarreaueee5b512015-04-03 23:46:31 +02002445 if (s->txn && s->txn->status) {
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002446 int n;
2447
Willy Tarreaueee5b512015-04-03 23:46:31 +02002448 n = s->txn->status / 100;
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002449 if (n < 1 || n > 5)
2450 n = 0;
2451
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002452 if (sess->fe->mode == PR_MODE_HTTP) {
2453 sess->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002454 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02002455 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002456 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002457 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002458 s->be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002459 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002460 }
2461
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002462 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002463 if (!LIST_ISEMPTY(&sess->fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02002464 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002465 (!(sess->fe->options & PR_O_NULLNOLOG) || req->total)) {
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002466 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002467 }
2468
Willy Tarreau87b09662015-04-03 00:22:06 +02002469 /* update time stats for this stream */
2470 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002471
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002472 /* the task MUST not be in the run queue anymore */
Willy Tarreau87b09662015-04-03 00:22:06 +02002473 stream_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002474 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002475 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002476 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002477}
2478
Willy Tarreau87b09662015-04-03 00:22:06 +02002479/* Update the stream's backend and server time stats */
2480void stream_update_time_stats(struct stream *s)
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002481{
2482 int t_request;
2483 int t_queue;
2484 int t_connect;
2485 int t_data;
2486 int t_close;
2487 struct server *srv;
2488
2489 t_request = 0;
2490 t_queue = s->logs.t_queue;
2491 t_connect = s->logs.t_connect;
2492 t_close = s->logs.t_close;
2493 t_data = s->logs.t_data;
2494
2495 if (s->be->mode != PR_MODE_HTTP)
2496 t_data = t_connect;
2497
2498 if (t_connect < 0 || t_data < 0)
2499 return;
2500
2501 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2502 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2503
2504 t_data -= t_connect;
2505 t_connect -= t_queue;
2506 t_queue -= t_request;
2507
2508 srv = objt_server(s->target);
2509 if (srv) {
2510 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2511 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2512 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2513 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2514 }
2515 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2516 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2517 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2518 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
2519}
2520
Willy Tarreau7c669d72008-06-20 15:04:11 +02002521/*
2522 * This function adjusts sess->srv_conn and maintains the previous and new
Willy Tarreau87b09662015-04-03 00:22:06 +02002523 * server's served stream counts. Setting newsrv to NULL is enough to release
Willy Tarreau7c669d72008-06-20 15:04:11 +02002524 * current connection slot. This function also notifies any LB algo which might
Willy Tarreau87b09662015-04-03 00:22:06 +02002525 * expect to be informed about any change in the number of active streams on a
Willy Tarreau7c669d72008-06-20 15:04:11 +02002526 * server.
2527 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002528void sess_change_server(struct stream *sess, struct server *newsrv)
Willy Tarreau7c669d72008-06-20 15:04:11 +02002529{
2530 if (sess->srv_conn == newsrv)
2531 return;
2532
2533 if (sess->srv_conn) {
2534 sess->srv_conn->served--;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002535 sess->srv_conn->proxy->served--;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002536 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2537 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Willy Tarreau87b09662015-04-03 00:22:06 +02002538 stream_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002539 }
2540
2541 if (newsrv) {
2542 newsrv->served++;
Andrew Rodlande168feb2016-10-25 12:48:17 -04002543 newsrv->proxy->served++;
Willy Tarreau7c669d72008-06-20 15:04:11 +02002544 if (newsrv->proxy->lbprm.server_take_conn)
2545 newsrv->proxy->lbprm.server_take_conn(newsrv);
Willy Tarreau87b09662015-04-03 00:22:06 +02002546 stream_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002547 }
2548}
2549
Willy Tarreau84455332009-03-15 22:34:05 +01002550/* Handle server-side errors for default protocols. It is called whenever a a
2551 * connection setup is aborted or a request is aborted in queue. It sets the
Willy Tarreau87b09662015-04-03 00:22:06 +02002552 * stream termination flags so that the caller does not have to worry about
Willy Tarreau84455332009-03-15 22:34:05 +01002553 * them. It's installed as ->srv_error for the server-side stream_interface.
2554 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002555void default_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreau84455332009-03-15 22:34:05 +01002556{
2557 int err_type = si->err_type;
2558 int err = 0, fin = 0;
2559
2560 if (err_type & SI_ET_QUEUE_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002561 err = SF_ERR_CLICL;
2562 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002563 }
2564 else if (err_type & SI_ET_CONN_ABRT) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002565 err = SF_ERR_CLICL;
2566 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002567 }
2568 else if (err_type & SI_ET_QUEUE_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002569 err = SF_ERR_SRVTO;
2570 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002571 }
2572 else if (err_type & SI_ET_QUEUE_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002573 err = SF_ERR_SRVCL;
2574 fin = SF_FINST_Q;
Willy Tarreau84455332009-03-15 22:34:05 +01002575 }
2576 else if (err_type & SI_ET_CONN_TO) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002577 err = SF_ERR_SRVTO;
2578 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002579 }
2580 else if (err_type & SI_ET_CONN_ERR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002581 err = SF_ERR_SRVCL;
2582 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002583 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002584 else if (err_type & SI_ET_CONN_RES) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002585 err = SF_ERR_RESOURCE;
2586 fin = SF_FINST_C;
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002587 }
Willy Tarreau84455332009-03-15 22:34:05 +01002588 else /* SI_ET_CONN_OTHER and others */ {
Willy Tarreaue7dff022015-04-03 01:14:29 +02002589 err = SF_ERR_INTERNAL;
2590 fin = SF_FINST_C;
Willy Tarreau84455332009-03-15 22:34:05 +01002591 }
2592
Willy Tarreaue7dff022015-04-03 01:14:29 +02002593 if (!(s->flags & SF_ERR_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002594 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002595 if (!(s->flags & SF_FINST_MASK))
Willy Tarreau84455332009-03-15 22:34:05 +01002596 s->flags |= fin;
2597}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002598
Willy Tarreaue7dff022015-04-03 01:14:29 +02002599/* kill a stream and set the termination flags to <why> (one of SF_ERR_*) */
Willy Tarreau87b09662015-04-03 00:22:06 +02002600void stream_shutdown(struct stream *stream, int why)
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002601{
Willy Tarreau87b09662015-04-03 00:22:06 +02002602 if (stream->req.flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002603 return;
2604
Willy Tarreau87b09662015-04-03 00:22:06 +02002605 channel_shutw_now(&stream->req);
2606 channel_shutr_now(&stream->res);
2607 stream->task->nice = 1024;
Willy Tarreaue7dff022015-04-03 01:14:29 +02002608 if (!(stream->flags & SF_ERR_MASK))
Willy Tarreau87b09662015-04-03 00:22:06 +02002609 stream->flags |= why;
2610 task_wakeup(stream->task, TASK_WOKEN_OTHER);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002611}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002612
Willy Tarreau8b22a712010-06-18 17:46:06 +02002613/************************************************************************/
2614/* All supported ACL keywords must be declared here. */
2615/************************************************************************/
2616
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002617/* 0=OK, <0=Alert, >0=Warning */
2618static enum act_parse_ret stream_parse_use_service(const char **args, int *cur_arg,
2619 struct proxy *px, struct act_rule *rule,
2620 char **err)
2621{
2622 struct action_kw *kw;
2623
2624 /* Check if the service name exists. */
2625 if (*(args[*cur_arg]) == 0) {
2626 memprintf(err, "'%s' expects a service name.", args[0]);
Thierry FOURNIER337eae12015-11-26 19:48:04 +01002627 return ACT_RET_PRS_ERR;
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02002628 }
2629
2630 /* lookup for keyword corresponding to a service. */
2631 kw = action_lookup(&service_keywords, args[*cur_arg]);
2632 if (!kw) {
2633 memprintf(err, "'%s' unknown service name.", args[1]);
2634 return ACT_RET_PRS_ERR;
2635 }
2636 (*cur_arg)++;
2637
2638 /* executes specific rule parser. */
2639 rule->kw = kw;
2640 if (kw->parse((const char **)args, cur_arg, px, rule, err) == ACT_RET_PRS_ERR)
2641 return ACT_RET_PRS_ERR;
2642
2643 /* Register processing function. */
2644 rule->action_ptr = process_use_service;
2645 rule->action = ACT_CUSTOM;
2646
2647 return ACT_RET_PRS_OK;
2648}
2649
2650void service_keywords_register(struct action_kw_list *kw_list)
2651{
2652 LIST_ADDQ(&service_keywords, &kw_list->list);
2653}
2654
William Lallemand4c5b4d52016-11-21 08:51:11 +01002655
2656/* This function dumps a complete stream state onto the stream interface's
2657 * read buffer. The stream has to be set in strm. It returns 0 if the output
2658 * buffer is full and it needs to be called again, otherwise non-zero. It is
2659 * designed to be called from stats_dump_strm_to_buffer() below.
2660 */
2661static int stats_dump_full_strm_to_buffer(struct stream_interface *si, struct stream *strm)
2662{
2663 struct appctx *appctx = __objt_appctx(si->end);
2664 struct tm tm;
2665 extern const char *monthname[12];
2666 char pn[INET6_ADDRSTRLEN];
2667 struct connection *conn;
2668 struct appctx *tmpctx;
2669
2670 chunk_reset(&trash);
2671
2672 if (appctx->ctx.sess.section > 0 && appctx->ctx.sess.uid != strm->uniq_id) {
2673 /* stream changed, no need to go any further */
2674 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002675 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01002676 si_applet_cant_put(si);
2677 return 0;
2678 }
2679 appctx->ctx.sess.uid = 0;
2680 appctx->ctx.sess.section = 0;
2681 return 1;
2682 }
2683
2684 switch (appctx->ctx.sess.section) {
2685 case 0: /* main status of the stream */
2686 appctx->ctx.sess.uid = strm->uniq_id;
2687 appctx->ctx.sess.section = 1;
2688 /* fall through */
2689
2690 case 1:
2691 get_localtime(strm->logs.accept_date.tv_sec, &tm);
2692 chunk_appendf(&trash,
2693 "%p: [%02d/%s/%04d:%02d:%02d:%02d.%06d] id=%u proto=%s",
2694 strm,
2695 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2696 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(strm->logs.accept_date.tv_usec),
2697 strm->uniq_id,
2698 strm_li(strm) ? strm_li(strm)->proto->name : "?");
2699
2700 conn = objt_conn(strm_orig(strm));
2701 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2702 case AF_INET:
2703 case AF_INET6:
2704 chunk_appendf(&trash, " source=%s:%d\n",
2705 pn, get_host_port(&conn->addr.from));
2706 break;
2707 case AF_UNIX:
2708 chunk_appendf(&trash, " source=unix:%d\n", strm_li(strm)->luid);
2709 break;
2710 default:
2711 /* no more information to print right now */
2712 chunk_appendf(&trash, "\n");
2713 break;
2714 }
2715
2716 chunk_appendf(&trash,
2717 " flags=0x%x, conn_retries=%d, srv_conn=%p, pend_pos=%p\n",
2718 strm->flags, strm->si[1].conn_retries, strm->srv_conn, strm->pend_pos);
2719
2720 chunk_appendf(&trash,
2721 " frontend=%s (id=%u mode=%s), listener=%s (id=%u)",
2722 strm_fe(strm)->id, strm_fe(strm)->uuid, strm_fe(strm)->mode ? "http" : "tcp",
2723 strm_li(strm) ? strm_li(strm)->name ? strm_li(strm)->name : "?" : "?",
2724 strm_li(strm) ? strm_li(strm)->luid : 0);
2725
2726 if (conn)
2727 conn_get_to_addr(conn);
2728
2729 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2730 case AF_INET:
2731 case AF_INET6:
2732 chunk_appendf(&trash, " addr=%s:%d\n",
2733 pn, get_host_port(&conn->addr.to));
2734 break;
2735 case AF_UNIX:
2736 chunk_appendf(&trash, " addr=unix:%d\n", strm_li(strm)->luid);
2737 break;
2738 default:
2739 /* no more information to print right now */
2740 chunk_appendf(&trash, "\n");
2741 break;
2742 }
2743
2744 if (strm->be->cap & PR_CAP_BE)
2745 chunk_appendf(&trash,
2746 " backend=%s (id=%u mode=%s)",
2747 strm->be->id,
2748 strm->be->uuid, strm->be->mode ? "http" : "tcp");
2749 else
2750 chunk_appendf(&trash, " backend=<NONE> (id=-1 mode=-)");
2751
2752 conn = objt_conn(strm->si[1].end);
2753 if (conn)
2754 conn_get_from_addr(conn);
2755
2756 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
2757 case AF_INET:
2758 case AF_INET6:
2759 chunk_appendf(&trash, " addr=%s:%d\n",
2760 pn, get_host_port(&conn->addr.from));
2761 break;
2762 case AF_UNIX:
2763 chunk_appendf(&trash, " addr=unix\n");
2764 break;
2765 default:
2766 /* no more information to print right now */
2767 chunk_appendf(&trash, "\n");
2768 break;
2769 }
2770
2771 if (strm->be->cap & PR_CAP_BE)
2772 chunk_appendf(&trash,
2773 " server=%s (id=%u)",
2774 objt_server(strm->target) ? objt_server(strm->target)->id : "<none>",
2775 objt_server(strm->target) ? objt_server(strm->target)->puid : 0);
2776 else
2777 chunk_appendf(&trash, " server=<NONE> (id=-1)");
2778
2779 if (conn)
2780 conn_get_to_addr(conn);
2781
2782 switch (conn ? addr_to_str(&conn->addr.to, pn, sizeof(pn)) : AF_UNSPEC) {
2783 case AF_INET:
2784 case AF_INET6:
2785 chunk_appendf(&trash, " addr=%s:%d\n",
2786 pn, get_host_port(&conn->addr.to));
2787 break;
2788 case AF_UNIX:
2789 chunk_appendf(&trash, " addr=unix\n");
2790 break;
2791 default:
2792 /* no more information to print right now */
2793 chunk_appendf(&trash, "\n");
2794 break;
2795 }
2796
2797 chunk_appendf(&trash,
2798 " task=%p (state=0x%02x nice=%d calls=%d exp=%s%s",
2799 strm->task,
2800 strm->task->state,
2801 strm->task->nice, strm->task->calls,
2802 strm->task->expire ?
2803 tick_is_expired(strm->task->expire, now_ms) ? "<PAST>" :
2804 human_time(TICKS_TO_MS(strm->task->expire - now_ms),
2805 TICKS_TO_MS(1000)) : "<NEVER>",
2806 task_in_rq(strm->task) ? ", running" : "");
2807
2808 chunk_appendf(&trash,
2809 " age=%s)\n",
2810 human_time(now.tv_sec - strm->logs.accept_date.tv_sec, 1));
2811
2812 if (strm->txn)
2813 chunk_appendf(&trash,
2814 " txn=%p flags=0x%x meth=%d status=%d req.st=%s rsp.st=%s waiting=%d\n",
2815 strm->txn, strm->txn->flags, strm->txn->meth, strm->txn->status,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02002816 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 +01002817
2818 chunk_appendf(&trash,
2819 " si[0]=%p (state=%s flags=0x%02x endp0=%s:%p exp=%s, et=0x%03x)\n",
2820 &strm->si[0],
2821 si_state_str(strm->si[0].state),
2822 strm->si[0].flags,
2823 obj_type_name(strm->si[0].end),
2824 obj_base_ptr(strm->si[0].end),
2825 strm->si[0].exp ?
2826 tick_is_expired(strm->si[0].exp, now_ms) ? "<PAST>" :
2827 human_time(TICKS_TO_MS(strm->si[0].exp - now_ms),
2828 TICKS_TO_MS(1000)) : "<NEVER>",
2829 strm->si[0].err_type);
2830
2831 chunk_appendf(&trash,
2832 " si[1]=%p (state=%s flags=0x%02x endp1=%s:%p exp=%s, et=0x%03x)\n",
2833 &strm->si[1],
2834 si_state_str(strm->si[1].state),
2835 strm->si[1].flags,
2836 obj_type_name(strm->si[1].end),
2837 obj_base_ptr(strm->si[1].end),
2838 strm->si[1].exp ?
2839 tick_is_expired(strm->si[1].exp, now_ms) ? "<PAST>" :
2840 human_time(TICKS_TO_MS(strm->si[1].exp - now_ms),
2841 TICKS_TO_MS(1000)) : "<NEVER>",
2842 strm->si[1].err_type);
2843
2844 if ((conn = objt_conn(strm->si[0].end)) != NULL) {
2845 chunk_appendf(&trash,
2846 " co0=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2847 conn,
2848 conn_get_ctrl_name(conn),
2849 conn_get_xprt_name(conn),
2850 conn_get_data_name(conn),
2851 obj_type_name(conn->target),
2852 obj_base_ptr(conn->target));
2853
2854 chunk_appendf(&trash,
2855 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2856 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002857 conn->handle.fd,
2858 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
2859 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache : 0,
2860 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].updated : 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002861 }
2862 else if ((tmpctx = objt_appctx(strm->si[0].end)) != NULL) {
2863 chunk_appendf(&trash,
2864 " app0=%p st0=%d st1=%d st2=%d applet=%s\n",
2865 tmpctx,
2866 tmpctx->st0,
2867 tmpctx->st1,
2868 tmpctx->st2,
2869 tmpctx->applet->name);
2870 }
2871
2872 if ((conn = objt_conn(strm->si[1].end)) != NULL) {
2873 chunk_appendf(&trash,
2874 " co1=%p ctrl=%s xprt=%s data=%s target=%s:%p\n",
2875 conn,
2876 conn_get_ctrl_name(conn),
2877 conn_get_xprt_name(conn),
2878 conn_get_data_name(conn),
2879 obj_type_name(conn->target),
2880 obj_base_ptr(conn->target));
2881
2882 chunk_appendf(&trash,
2883 " flags=0x%08x fd=%d fd.state=%02x fd.cache=%d updt=%d\n",
2884 conn->flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02002885 conn->handle.fd,
2886 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].state : 0,
2887 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].cache : 0,
2888 conn->handle.fd >= 0 ? fdtab[conn->handle.fd].updated : 0);
William Lallemand4c5b4d52016-11-21 08:51:11 +01002889 }
2890 else if ((tmpctx = objt_appctx(strm->si[1].end)) != NULL) {
2891 chunk_appendf(&trash,
2892 " app1=%p st0=%d st1=%d st2=%d applet=%s\n",
2893 tmpctx,
2894 tmpctx->st0,
2895 tmpctx->st1,
2896 tmpctx->st2,
2897 tmpctx->applet->name);
2898 }
2899
2900 chunk_appendf(&trash,
2901 " req=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2902 " an_exp=%s",
2903 &strm->req,
2904 strm->req.flags, strm->req.analysers,
2905 strm->req.pipe ? strm->req.pipe->data : 0,
2906 strm->req.to_forward, strm->req.total,
2907 strm->req.analyse_exp ?
2908 human_time(TICKS_TO_MS(strm->req.analyse_exp - now_ms),
2909 TICKS_TO_MS(1000)) : "<NEVER>");
2910
2911 chunk_appendf(&trash,
2912 " rex=%s",
2913 strm->req.rex ?
2914 human_time(TICKS_TO_MS(strm->req.rex - now_ms),
2915 TICKS_TO_MS(1000)) : "<NEVER>");
2916
2917 chunk_appendf(&trash,
2918 " wex=%s\n"
2919 " buf=%p data=%p o=%d p=%d req.next=%d i=%d size=%d\n",
2920 strm->req.wex ?
2921 human_time(TICKS_TO_MS(strm->req.wex - now_ms),
2922 TICKS_TO_MS(1000)) : "<NEVER>",
2923 strm->req.buf,
2924 strm->req.buf->data, strm->req.buf->o,
2925 (int)(strm->req.buf->p - strm->req.buf->data),
2926 strm->txn ? strm->txn->req.next : 0, strm->req.buf->i,
2927 strm->req.buf->size);
2928
2929 chunk_appendf(&trash,
2930 " res=%p (f=0x%06x an=0x%x pipe=%d tofwd=%d total=%lld)\n"
2931 " an_exp=%s",
2932 &strm->res,
2933 strm->res.flags, strm->res.analysers,
2934 strm->res.pipe ? strm->res.pipe->data : 0,
2935 strm->res.to_forward, strm->res.total,
2936 strm->res.analyse_exp ?
2937 human_time(TICKS_TO_MS(strm->res.analyse_exp - now_ms),
2938 TICKS_TO_MS(1000)) : "<NEVER>");
2939
2940 chunk_appendf(&trash,
2941 " rex=%s",
2942 strm->res.rex ?
2943 human_time(TICKS_TO_MS(strm->res.rex - now_ms),
2944 TICKS_TO_MS(1000)) : "<NEVER>");
2945
2946 chunk_appendf(&trash,
2947 " wex=%s\n"
2948 " buf=%p data=%p o=%d p=%d rsp.next=%d i=%d size=%d\n",
2949 strm->res.wex ?
2950 human_time(TICKS_TO_MS(strm->res.wex - now_ms),
2951 TICKS_TO_MS(1000)) : "<NEVER>",
2952 strm->res.buf,
2953 strm->res.buf->data, strm->res.buf->o,
2954 (int)(strm->res.buf->p - strm->res.buf->data),
2955 strm->txn ? strm->txn->rsp.next : 0, strm->res.buf->i,
2956 strm->res.buf->size);
2957
Willy Tarreau06d80a92017-10-19 14:32:15 +02002958 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01002959 si_applet_cant_put(si);
2960 return 0;
2961 }
2962
2963 /* use other states to dump the contents */
2964 }
2965 /* end of dump */
2966 appctx->ctx.sess.uid = 0;
2967 appctx->ctx.sess.section = 0;
2968 return 1;
2969}
2970
2971
2972static int cli_parse_show_sess(char **args, struct appctx *appctx, void *private)
2973{
William Lallemand4c5b4d52016-11-21 08:51:11 +01002974 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2975 return 1;
2976
2977 if (*args[2] && strcmp(args[2], "all") == 0)
2978 appctx->ctx.sess.target = (void *)-1;
2979 else if (*args[2])
2980 appctx->ctx.sess.target = (void *)strtoul(args[2], NULL, 0);
2981 else
2982 appctx->ctx.sess.target = NULL;
2983 appctx->ctx.sess.section = 0; /* start with stream status */
2984 appctx->ctx.sess.pos = 0;
2985
2986 return 0;
2987}
2988
2989/* This function dumps all streams' states onto the stream interface's
2990 * read buffer. It returns 0 if the output buffer is full and it needs
2991 * to be called again, otherwise non-zero. It is designed to be called
2992 * from stats_dump_sess_to_buffer() below.
2993 */
2994static int cli_io_handler_dump_sess(struct appctx *appctx)
2995{
2996 struct stream_interface *si = appctx->owner;
2997 struct connection *conn;
2998
2999 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW))) {
3000 /* If we're forced to shut down, we might have to remove our
3001 * reference to the last stream being dumped.
3002 */
3003 if (appctx->st2 == STAT_ST_LIST) {
3004 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3005 LIST_DEL(&appctx->ctx.sess.bref.users);
3006 LIST_INIT(&appctx->ctx.sess.bref.users);
3007 }
3008 }
3009 return 1;
3010 }
3011
3012 chunk_reset(&trash);
3013
3014 switch (appctx->st2) {
3015 case STAT_ST_INIT:
3016 /* the function had not been called yet, let's prepare the
3017 * buffer for a response. We initialize the current stream
3018 * pointer to the first in the global list. When a target
3019 * stream is being destroyed, it is responsible for updating
3020 * this pointer. We know we have reached the end when this
3021 * pointer points back to the head of the streams list.
3022 */
3023 LIST_INIT(&appctx->ctx.sess.bref.users);
3024 appctx->ctx.sess.bref.ref = streams.n;
3025 appctx->st2 = STAT_ST_LIST;
3026 /* fall through */
3027
3028 case STAT_ST_LIST:
3029 /* first, let's detach the back-ref from a possible previous stream */
3030 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users)) {
3031 LIST_DEL(&appctx->ctx.sess.bref.users);
3032 LIST_INIT(&appctx->ctx.sess.bref.users);
3033 }
3034
3035 /* and start from where we stopped */
3036 while (appctx->ctx.sess.bref.ref != &streams) {
3037 char pn[INET6_ADDRSTRLEN];
3038 struct stream *curr_strm;
3039
3040 curr_strm = LIST_ELEM(appctx->ctx.sess.bref.ref, struct stream *, list);
3041
3042 if (appctx->ctx.sess.target) {
3043 if (appctx->ctx.sess.target != (void *)-1 && appctx->ctx.sess.target != curr_strm)
3044 goto next_sess;
3045
3046 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3047 /* call the proper dump() function and return if we're missing space */
3048 if (!stats_dump_full_strm_to_buffer(si, curr_strm))
3049 return 0;
3050
3051 /* stream dump complete */
3052 LIST_DEL(&appctx->ctx.sess.bref.users);
3053 LIST_INIT(&appctx->ctx.sess.bref.users);
3054 if (appctx->ctx.sess.target != (void *)-1) {
3055 appctx->ctx.sess.target = NULL;
3056 break;
3057 }
3058 else
3059 goto next_sess;
3060 }
3061
3062 chunk_appendf(&trash,
3063 "%p: proto=%s",
3064 curr_strm,
3065 strm_li(curr_strm) ? strm_li(curr_strm)->proto->name : "?");
3066
3067 conn = objt_conn(strm_orig(curr_strm));
3068 switch (conn ? addr_to_str(&conn->addr.from, pn, sizeof(pn)) : AF_UNSPEC) {
3069 case AF_INET:
3070 case AF_INET6:
3071 chunk_appendf(&trash,
3072 " src=%s:%d fe=%s be=%s srv=%s",
3073 pn,
3074 get_host_port(&conn->addr.from),
3075 strm_fe(curr_strm)->id,
3076 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3077 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3078 );
3079 break;
3080 case AF_UNIX:
3081 chunk_appendf(&trash,
3082 " src=unix:%d fe=%s be=%s srv=%s",
3083 strm_li(curr_strm)->luid,
3084 strm_fe(curr_strm)->id,
3085 (curr_strm->be->cap & PR_CAP_BE) ? curr_strm->be->id : "<NONE>",
3086 objt_server(curr_strm->target) ? objt_server(curr_strm->target)->id : "<none>"
3087 );
3088 break;
3089 }
3090
3091 chunk_appendf(&trash,
3092 " ts=%02x age=%s calls=%d",
3093 curr_strm->task->state,
3094 human_time(now.tv_sec - curr_strm->logs.tv_accept.tv_sec, 1),
3095 curr_strm->task->calls);
3096
3097 chunk_appendf(&trash,
3098 " rq[f=%06xh,i=%d,an=%02xh,rx=%s",
3099 curr_strm->req.flags,
3100 curr_strm->req.buf->i,
3101 curr_strm->req.analysers,
3102 curr_strm->req.rex ?
3103 human_time(TICKS_TO_MS(curr_strm->req.rex - now_ms),
3104 TICKS_TO_MS(1000)) : "");
3105
3106 chunk_appendf(&trash,
3107 ",wx=%s",
3108 curr_strm->req.wex ?
3109 human_time(TICKS_TO_MS(curr_strm->req.wex - now_ms),
3110 TICKS_TO_MS(1000)) : "");
3111
3112 chunk_appendf(&trash,
3113 ",ax=%s]",
3114 curr_strm->req.analyse_exp ?
3115 human_time(TICKS_TO_MS(curr_strm->req.analyse_exp - now_ms),
3116 TICKS_TO_MS(1000)) : "");
3117
3118 chunk_appendf(&trash,
3119 " rp[f=%06xh,i=%d,an=%02xh,rx=%s",
3120 curr_strm->res.flags,
3121 curr_strm->res.buf->i,
3122 curr_strm->res.analysers,
3123 curr_strm->res.rex ?
3124 human_time(TICKS_TO_MS(curr_strm->res.rex - now_ms),
3125 TICKS_TO_MS(1000)) : "");
3126
3127 chunk_appendf(&trash,
3128 ",wx=%s",
3129 curr_strm->res.wex ?
3130 human_time(TICKS_TO_MS(curr_strm->res.wex - now_ms),
3131 TICKS_TO_MS(1000)) : "");
3132
3133 chunk_appendf(&trash,
3134 ",ax=%s]",
3135 curr_strm->res.analyse_exp ?
3136 human_time(TICKS_TO_MS(curr_strm->res.analyse_exp - now_ms),
3137 TICKS_TO_MS(1000)) : "");
3138
3139 conn = objt_conn(curr_strm->si[0].end);
3140 chunk_appendf(&trash,
3141 " s0=[%d,%1xh,fd=%d,ex=%s]",
3142 curr_strm->si[0].state,
3143 curr_strm->si[0].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[0].exp ?
3146 human_time(TICKS_TO_MS(curr_strm->si[0].exp - now_ms),
3147 TICKS_TO_MS(1000)) : "");
3148
3149 conn = objt_conn(curr_strm->si[1].end);
3150 chunk_appendf(&trash,
3151 " s1=[%d,%1xh,fd=%d,ex=%s]",
3152 curr_strm->si[1].state,
3153 curr_strm->si[1].flags,
Willy Tarreau585744b2017-08-24 14:31:19 +02003154 conn ? conn->handle.fd : -1,
William Lallemand4c5b4d52016-11-21 08:51:11 +01003155 curr_strm->si[1].exp ?
3156 human_time(TICKS_TO_MS(curr_strm->si[1].exp - now_ms),
3157 TICKS_TO_MS(1000)) : "");
3158
3159 chunk_appendf(&trash,
3160 " exp=%s",
3161 curr_strm->task->expire ?
3162 human_time(TICKS_TO_MS(curr_strm->task->expire - now_ms),
3163 TICKS_TO_MS(1000)) : "");
3164 if (task_in_rq(curr_strm->task))
3165 chunk_appendf(&trash, " run(nice=%d)", curr_strm->task->nice);
3166
3167 chunk_appendf(&trash, "\n");
3168
Willy Tarreau06d80a92017-10-19 14:32:15 +02003169 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003170 /* let's try again later from this stream. We add ourselves into
3171 * this stream's users so that it can remove us upon termination.
3172 */
3173 si_applet_cant_put(si);
3174 LIST_ADDQ(&curr_strm->back_refs, &appctx->ctx.sess.bref.users);
3175 return 0;
3176 }
3177
3178 next_sess:
3179 appctx->ctx.sess.bref.ref = curr_strm->list.n;
3180 }
3181
3182 if (appctx->ctx.sess.target && appctx->ctx.sess.target != (void *)-1) {
3183 /* specified stream not found */
3184 if (appctx->ctx.sess.section > 0)
3185 chunk_appendf(&trash, " *** session terminated while we were watching it ***\n");
3186 else
3187 chunk_appendf(&trash, "Session not found.\n");
3188
Willy Tarreau06d80a92017-10-19 14:32:15 +02003189 if (ci_putchk(si_ic(si), &trash) == -1) {
William Lallemand4c5b4d52016-11-21 08:51:11 +01003190 si_applet_cant_put(si);
3191 return 0;
3192 }
3193
3194 appctx->ctx.sess.target = NULL;
3195 appctx->ctx.sess.uid = 0;
3196 return 1;
3197 }
3198
3199 appctx->st2 = STAT_ST_FIN;
3200 /* fall through */
3201
3202 default:
3203 appctx->st2 = STAT_ST_FIN;
3204 return 1;
3205 }
3206}
3207
3208static void cli_release_show_sess(struct appctx *appctx)
3209{
3210 if (appctx->st2 == STAT_ST_LIST) {
3211 if (!LIST_ISEMPTY(&appctx->ctx.sess.bref.users))
3212 LIST_DEL(&appctx->ctx.sess.bref.users);
3213 }
3214}
3215
Willy Tarreau61b65212016-11-24 11:09:25 +01003216/* Parses the "shutdown session" directive, it always returns 1 */
3217static int cli_parse_shutdown_session(char **args, struct appctx *appctx, void *private)
3218{
3219 struct stream *strm, *ptr;
3220
3221 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3222 return 1;
3223
3224 if (!*args[2]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003225 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003226 appctx->ctx.cli.msg = "Session pointer expected (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003227 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003228 return 1;
3229 }
3230
3231 ptr = (void *)strtoul(args[2], NULL, 0);
3232
3233 /* first, look for the requested stream in the stream table */
3234 list_for_each_entry(strm, &streams, list) {
3235 if (strm == ptr)
3236 break;
3237 }
3238
3239 /* do we have the stream ? */
3240 if (strm != ptr) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02003241 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau61b65212016-11-24 11:09:25 +01003242 appctx->ctx.cli.msg = "No such session (use 'show sess').\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01003243 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau61b65212016-11-24 11:09:25 +01003244 return 1;
3245 }
3246
3247 stream_shutdown(strm, SF_ERR_KILLED);
3248 return 1;
3249}
3250
Willy Tarreau4e46b622016-11-23 16:50:48 +01003251/* Parses the "shutdown session server" directive, it always returns 1 */
3252static int cli_parse_shutdown_sessions_server(char **args, struct appctx *appctx, void *private)
3253{
3254 struct server *sv;
3255 struct stream *strm, *strm_bck;
3256
3257 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
3258 return 1;
3259
3260 sv = cli_find_server(appctx, args[3]);
3261 if (!sv)
3262 return 1;
3263
3264 /* kill all the stream that are on this server */
3265 list_for_each_entry_safe(strm, strm_bck, &sv->actconns, by_srv)
3266 if (strm->srv_conn == sv)
3267 stream_shutdown(strm, SF_ERR_KILLED);
3268 return 1;
3269}
3270
William Lallemand4c5b4d52016-11-21 08:51:11 +01003271/* register cli keywords */
3272static struct cli_kw_list cli_kws = {{ },{
3273 { { "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 +01003274 { { "shutdown", "session", NULL }, "shutdown session : kill a specific session", cli_parse_shutdown_session, NULL, NULL },
Willy Tarreau4e46b622016-11-23 16:50:48 +01003275 { { "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 +01003276 {{},}
3277}};
3278
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003279/* main configuration keyword registration. */
3280static struct action_kw_list stream_tcp_keywords = { ILH, {
3281 { "use-service", stream_parse_use_service },
3282 { /* END */ }
3283}};
3284
3285static struct action_kw_list stream_http_keywords = { ILH, {
3286 { "use-service", stream_parse_use_service },
3287 { /* END */ }
3288}};
3289
Willy Tarreau8b22a712010-06-18 17:46:06 +02003290__attribute__((constructor))
Willy Tarreau87b09662015-04-03 00:22:06 +02003291static void __stream_init(void)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003292{
Thierry FOURNIER5a363e72015-09-27 19:29:33 +02003293 tcp_req_cont_keywords_register(&stream_tcp_keywords);
3294 http_req_keywords_register(&stream_http_keywords);
William Lallemand4c5b4d52016-11-21 08:51:11 +01003295 cli_register_kw(&cli_kws);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003296}
3297
Willy Tarreaubaaee002006-06-26 02:48:02 +02003298/*
3299 * Local variables:
3300 * c-indent-level: 8
3301 * c-basic-offset: 8
3302 * End:
3303 */