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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
Willy Tarreau81f9aa32010-06-01 17:45:26 +02002 * Session 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
17#include <common/config.h>
Willy Tarreau9b28e032012-10-12 23:49:43 +020018#include <common/buffer.h>
Willy Tarreau7c669d72008-06-20 15:04:11 +020019#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020020#include <common/memory.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020021
Willy Tarreaubaaee002006-06-26 02:48:02 +020022#include <types/capture.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010023#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020024
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020025#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020026#include <proto/arg.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010027#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020028#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010029#include <proto/checks.h>
Willy Tarreaud2274c62012-07-06 14:29:45 +020030#include <proto/connection.h>
Willy Tarreau5ca791d2009-08-16 19:06:42 +020031#include <proto/dumpstats.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020032#include <proto/fd.h>
Willy Tarreau91c43d72010-06-20 11:19:22 +020033#include <proto/freq_ctr.h>
Willy Tarreau3041b9f2010-10-15 23:25:20 +020034#include <proto/frontend.h>
Willy Tarreau8d5d7f22007-01-21 19:16:41 +010035#include <proto/hdr_idx.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020036#include <proto/listener.h>
Willy Tarreau332f8bf2007-05-13 21:36:56 +020037#include <proto/log.h>
Willy Tarreaucbaaec42012-09-06 11:32:07 +020038#include <proto/raw_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020039#include <proto/session.h>
Willy Tarreau3eba98a2009-01-25 13:56:13 +010040#include <proto/pipe.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010041#include <proto/proto_http.h>
42#include <proto/proto_tcp.h>
Willy Tarreau1d0dfb12009-07-07 15:10:31 +020043#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020044#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010045#include <proto/server.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020046#include <proto/sample.h>
Emeric Brun1d33b292010-01-04 15:47:17 +010047#include <proto/stick_table.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010048#include <proto/stream_interface.h>
Willy Tarreau55a8d0e2008-11-30 18:47:21 +010049#include <proto/task.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050
Willy Tarreauc6ca1a02007-05-13 19:43:47 +020051struct pool_head *pool2_session;
Willy Tarreauf54f8bd2008-11-23 19:53:55 +010052struct list sessions;
Willy Tarreaubaaee002006-06-26 02:48:02 +020053
Willy Tarreaubf883e02014-11-25 21:10:35 +010054/* list of sessions waiting for at least one buffer */
55struct list buffer_wq = LIST_HEAD_INIT(buffer_wq);
56
Willy Tarreau071e1372012-10-03 01:39:48 +020057static int conn_session_complete(struct connection *conn);
Willy Tarreau9683e9a2012-10-03 21:17:23 +020058static int conn_session_update(struct connection *conn);
Willy Tarreau2542b532012-08-31 16:01:23 +020059static struct task *expire_mini_session(struct task *t);
60int session_complete(struct session *s);
61
Willy Tarreau5e75e272012-10-02 21:21:20 +020062/* data layer callbacks for an embryonic session */
63struct data_cb sess_conn_cb = {
64 .recv = NULL,
65 .send = NULL,
Willy Tarreau9683e9a2012-10-03 21:17:23 +020066 .wake = conn_session_update,
Willy Tarreau071e1372012-10-03 01:39:48 +020067 .init = conn_session_complete,
Willy Tarreau5e75e272012-10-02 21:21:20 +020068};
69
Willy Tarreau2542b532012-08-31 16:01:23 +020070/* This function is called from the protocol layer accept() in order to
71 * instanciate a new embryonic session on behalf of a given listener and
72 * frontend. It returns a positive value upon success, 0 if the connection
73 * can be ignored, or a negative value upon critical failure. The accepted
74 * file descriptor is closed if we return <= 0.
Willy Tarreau81f9aa32010-06-01 17:45:26 +020075 */
76int session_accept(struct listener *l, int cfd, struct sockaddr_storage *addr)
77{
Willy Tarreaub363a1f2013-10-01 10:45:07 +020078 struct connection *cli_conn;
Willy Tarreau81f9aa32010-06-01 17:45:26 +020079 struct proxy *p = l->frontend;
80 struct session *s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +020081 struct task *t;
Willy Tarreauabe8ea52010-11-11 10:56:04 +010082 int ret;
83
84
85 ret = -1; /* assume unrecoverable error by default */
Willy Tarreau81f9aa32010-06-01 17:45:26 +020086
Willy Tarreau32e3c6a2013-10-11 19:34:20 +020087 if (unlikely((cli_conn = conn_new()) == NULL))
Willy Tarreau81f9aa32010-06-01 17:45:26 +020088 goto out_close;
Willy Tarreau81f9aa32010-06-01 17:45:26 +020089
Willy Tarreau32e3c6a2013-10-11 19:34:20 +020090 conn_prepare(cli_conn, l->proto, l->xprt);
Willy Tarreauf2943dc2012-10-26 20:10:28 +020091
Willy Tarreau32e3c6a2013-10-11 19:34:20 +020092 cli_conn->t.sock.fd = cfd;
93 cli_conn->addr.from = *addr;
94 cli_conn->flags |= CO_FL_ADDR_FROM_SET;
95 cli_conn->target = &l->obj_type;
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010096 cli_conn->proxy_netns = l->netns;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +020097
98 if (unlikely((s = pool_alloc2(pool2_session)) == NULL))
99 goto out_free_conn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200100
Willy Tarreau2542b532012-08-31 16:01:23 +0200101 /* minimum session initialization required for an embryonic session is
102 * fairly low. We need very little to execute L4 ACLs, then we need a
103 * task to make the client-side connection live on its own.
104 * - flags
105 * - stick-entry tracking
106 */
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200107 s->flags = 0;
108 s->logs.logwait = p->to_log;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200109 s->logs.level = 0;
Willy Tarreaud5ca9ab2013-05-28 17:40:25 +0200110
111 memset(s->stkctr, 0, sizeof(s->stkctr));
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200112
Willy Tarreau2542b532012-08-31 16:01:23 +0200113 s->listener = l;
114 s->fe = p;
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100115
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200116 /* On a mini-session, the connection is directly attached to the
117 * session's target so that we don't need to initialize the stream
118 * interfaces. Another benefit is that it's easy to detect a mini-
119 * session in dumps using this : it's the only one which has a
120 * connection in s->target.
121 */
122 s->target = &cli_conn->obj_type;
123
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200124 s->logs.accept_date = date; /* user-visible date for logging */
125 s->logs.tv_accept = now; /* corrected date for internal use */
Willy Tarreau1f0da242014-01-25 11:01:50 +0100126 s->uniq_id = global.req_count++;
Willy Tarreau2542b532012-08-31 16:01:23 +0200127 p->feconn++;
128 /* This session was accepted, count it now */
129 if (p->feconn > p->fe_counters.conn_max)
130 p->fe_counters.conn_max = p->feconn;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200131
Willy Tarreau2542b532012-08-31 16:01:23 +0200132 proxy_inc_fe_conn_ctr(l, p);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200133
Willy Tarreau59e3ff42013-12-16 02:16:50 +0100134 /* Add the minimum callbacks to prepare the connection's control layer.
135 * We need this so that we can safely execute the ACLs used by the
136 * "tcp-request connection" ruleset. We also carefully attach the
137 * connection to the stream interface without initializing the rest,
138 * so that ACLs can use si[0]->end.
139 */
140 si_attach_conn(&s->si[0], cli_conn);
141 conn_attach(cli_conn, s, &sess_conn_cb);
142 conn_ctrl_init(cli_conn);
143
Willy Tarreau2cff2f72013-12-16 10:12:54 +0100144 /* now evaluate the tcp-request layer4 rules. Since we expect to be able
145 * to abort right here as soon as possible, we check the rules before
146 * even initializing the stream interfaces.
147 */
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200148 if ((l->options & LI_O_TCP_RULES) && !tcp_exec_req_rules(s)) {
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200149 /* let's do a no-linger now to close with a single RST. */
150 setsockopt(cfd, SOL_SOCKET, SO_LINGER, (struct linger *) &nolinger, sizeof(struct linger));
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100151 ret = 0; /* successful termination */
Willy Tarreau2542b532012-08-31 16:01:23 +0200152 goto out_free_session;
153 }
154
Willy Tarreau82569f92012-09-27 23:48:56 +0200155 /* monitor-net and health mode are processed immediately after TCP
156 * connection rules. This way it's possible to block them, but they
157 * never use the lower data layers, they send directly over the socket,
158 * as they were designed for. We first flush the socket receive buffer
159 * in order to avoid emission of an RST by the system. We ignore any
160 * error.
161 */
162 if (unlikely((p->mode == PR_MODE_HEALTH) ||
163 ((l->options & LI_O_CHK_MONNET) &&
164 addr->ss_family == AF_INET &&
165 (((struct sockaddr_in *)addr)->sin_addr.s_addr & p->mon_mask.s_addr) == p->mon_net.s_addr))) {
166 /* we have 4 possibilities here :
167 * - HTTP mode, from monitoring address => send "HTTP/1.0 200 OK"
168 * - HEALTH mode with HTTP check => send "HTTP/1.0 200 OK"
169 * - HEALTH mode without HTTP check => just send "OK"
170 * - TCP mode from monitoring address => just close
171 */
Willy Tarreau2b57cb82013-06-10 19:56:38 +0200172 if (l->proto->drain)
173 l->proto->drain(cfd);
Willy Tarreau82569f92012-09-27 23:48:56 +0200174 if (p->mode == PR_MODE_HTTP ||
175 (p->mode == PR_MODE_HEALTH && (p->options2 & PR_O2_CHK_ANY) == PR_O2_HTTP_CHK))
176 send(cfd, "HTTP/1.0 200 OK\r\n\r\n", 19, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_MORE);
177 else if (p->mode == PR_MODE_HEALTH)
178 send(cfd, "OK\n", 3, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_MORE);
179 ret = 0;
180 goto out_free_session;
181 }
182
Willy Tarreau22cda212012-08-31 17:43:29 +0200183 /* wait for a PROXY protocol header */
184 if (l->options & LI_O_ACC_PROXY) {
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200185 cli_conn->flags |= CO_FL_ACCEPT_PROXY;
186 conn_sock_want_recv(cli_conn);
Willy Tarreau22cda212012-08-31 17:43:29 +0200187 }
188
Willy Tarreau2542b532012-08-31 16:01:23 +0200189 if (unlikely((t = task_new()) == NULL))
190 goto out_free_session;
191
192 t->context = s;
193 t->nice = l->nice;
194 s->task = t;
195
Willy Tarreau59e3ff42013-12-16 02:16:50 +0100196 /* Finish setting the callbacks. Right now the transport layer is present
Willy Tarreauf7bc57c2012-10-03 00:19:48 +0200197 * but not initialized. Also note we need to be careful as the stream
198 * int is not initialized yet.
Willy Tarreau2542b532012-08-31 16:01:23 +0200199 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200200 conn_data_want_recv(cli_conn);
201 if (conn_xprt_init(cli_conn) < 0)
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100202 goto out_free_task;
Willy Tarreau2542b532012-08-31 16:01:23 +0200203
204 /* OK, now either we have a pending handshake to execute with and
205 * then we must return to the I/O layer, or we can proceed with the
206 * end of the session initialization. In case of handshake, we also
207 * set the I/O timeout to the frontend's client timeout.
208 */
209
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200210 if (cli_conn->flags & CO_FL_HANDSHAKE) {
Willy Tarreau2542b532012-08-31 16:01:23 +0200211 t->process = expire_mini_session;
212 t->expire = tick_add_ifset(now_ms, p->timeout.client);
213 task_queue(t);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200214 cli_conn->flags |= CO_FL_INIT_DATA | CO_FL_WAKE_DATA;
Willy Tarreau2542b532012-08-31 16:01:23 +0200215 return 1;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200216 }
217
Willy Tarreau815f5ec2012-11-06 00:14:25 +0100218 /* OK let's complete session initialization since there is no handshake */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200219 cli_conn->flags |= CO_FL_CONNECTED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200220 ret = session_complete(s);
221 if (ret > 0)
222 return ret;
223
224 /* Error unrolling */
225 out_free_task:
226 task_free(t);
227 out_free_session:
228 p->feconn--;
Willy Tarreaue9101692014-01-28 22:48:24 +0100229 session_store_counters(s);
Willy Tarreau2542b532012-08-31 16:01:23 +0200230 pool_free2(pool2_session, s);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200231 out_free_conn:
232 cli_conn->flags &= ~CO_FL_XPRT_TRACKED;
233 conn_xprt_close(cli_conn);
234 conn_free(cli_conn);
Willy Tarreau2542b532012-08-31 16:01:23 +0200235 out_close:
Willy Tarreauf7bc57c2012-10-03 00:19:48 +0200236 if (ret < 0 && l->xprt == &raw_sock && p->mode == PR_MODE_HTTP) {
Willy Tarreau2542b532012-08-31 16:01:23 +0200237 /* critical error, no more memory, try to emit a 500 response */
Willy Tarreau05bf5e12013-10-20 23:10:28 +0200238 struct chunk *err_msg = &p->errmsg[HTTP_ERR_500];
239 if (!err_msg->str)
240 err_msg = &http_err_chunks[HTTP_ERR_500];
Willy Tarreau2542b532012-08-31 16:01:23 +0200241 send(cfd, err_msg->str, err_msg->len, MSG_DONTWAIT|MSG_NOSIGNAL);
242 }
243
244 if (fdtab[cfd].owner)
245 fd_delete(cfd);
246 else
247 close(cfd);
248 return ret;
249}
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100250
Willy Tarreau0af29122012-12-03 15:35:00 +0100251
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200252/* prepare the trash with a log prefix for session <s>. It only works with
Willy Tarreaub4f98092014-05-08 21:06:11 +0200253 * embryonic sessions based on a real connection. This function requires that
254 * at s->target still points to the incoming connection.
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200255 */
Willy Tarreau0af29122012-12-03 15:35:00 +0100256static void prepare_mini_sess_log_prefix(struct session *s)
257{
258 struct tm tm;
259 char pn[INET6_ADDRSTRLEN];
260 int ret;
261 char *end;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200262 struct connection *cli_conn = __objt_conn(s->target);
Willy Tarreau0af29122012-12-03 15:35:00 +0100263
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200264 ret = addr_to_str(&cli_conn->addr.from, pn, sizeof(pn));
Willy Tarreau0af29122012-12-03 15:35:00 +0100265 if (ret <= 0)
266 chunk_printf(&trash, "unknown [");
267 else if (ret == AF_UNIX)
268 chunk_printf(&trash, "%s:%d [", pn, s->listener->luid);
269 else
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200270 chunk_printf(&trash, "%s:%d [", pn, get_host_port(&cli_conn->addr.from));
Willy Tarreau0af29122012-12-03 15:35:00 +0100271
272 get_localtime(s->logs.accept_date.tv_sec, &tm);
273 end = date2str_log(trash.str + trash.len, &tm, &(s->logs.accept_date), trash.size - trash.len);
274 trash.len = end - trash.str;
275 if (s->listener->name)
276 chunk_appendf(&trash, "] %s/%s", s->fe->id, s->listener->name);
277 else
278 chunk_appendf(&trash, "] %s/%d", s->fe->id, s->listener->luid);
279}
280
Willy Tarreau2542b532012-08-31 16:01:23 +0200281/* This function kills an existing embryonic session. It stops the connection's
Willy Tarreauf7bc57c2012-10-03 00:19:48 +0200282 * transport layer, releases assigned resources, resumes the listener if it was
Willy Tarreaub4f98092014-05-08 21:06:11 +0200283 * disabled and finally kills the file descriptor. This function requires that
284 * at s->target still points to the incoming connection.
Willy Tarreau2542b532012-08-31 16:01:23 +0200285 */
286static void kill_mini_session(struct session *s)
287{
Willy Tarreau0af29122012-12-03 15:35:00 +0100288 int level = LOG_INFO;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200289 struct connection *conn = __objt_conn(s->target);
Willy Tarreau0af29122012-12-03 15:35:00 +0100290 unsigned int log = s->logs.logwait;
291 const char *err_msg;
292
293 if (s->fe->options2 & PR_O2_LOGERRORS)
294 level = LOG_ERR;
295
296 if (log && (s->fe->options & PR_O_NULLNOLOG)) {
297 /* with "option dontlognull", we don't log connections with no transfer */
Willy Tarreau8e3bf692012-12-03 15:41:18 +0100298 if (!conn->err_code ||
Willy Tarreau20879a02012-12-03 16:32:10 +0100299 conn->err_code == CO_ER_PRX_EMPTY || conn->err_code == CO_ER_PRX_ABORT ||
300 conn->err_code == CO_ER_SSL_EMPTY || conn->err_code == CO_ER_SSL_ABORT)
Willy Tarreau0af29122012-12-03 15:35:00 +0100301 log = 0;
302 }
303
304 if (log) {
305 if (!conn->err_code && (s->task->state & TASK_WOKEN_TIMER)) {
306 if (conn->flags & CO_FL_ACCEPT_PROXY)
307 conn->err_code = CO_ER_PRX_TIMEOUT;
308 else if (conn->flags & CO_FL_SSL_WAIT_HS)
309 conn->err_code = CO_ER_SSL_TIMEOUT;
310 }
311
312 prepare_mini_sess_log_prefix(s);
313 err_msg = conn_err_code_str(conn);
314 if (err_msg)
315 send_log(s->fe, level, "%s: %s\n", trash.str, err_msg);
316 else
317 send_log(s->fe, level, "%s: unknown connection error (code=%d flags=%08x)\n",
318 trash.str, conn->err_code, conn->flags);
319 }
320
Willy Tarreau2542b532012-08-31 16:01:23 +0200321 /* kill the connection now */
Willy Tarreauf79c8172013-10-21 16:30:56 +0200322 conn_force_close(conn);
Willy Tarreaua23ee3a2014-02-05 00:18:47 +0100323 conn_free(conn);
Willy Tarreau2542b532012-08-31 16:01:23 +0200324
325 s->fe->feconn--;
Willy Tarreau7af7d592013-07-01 18:07:03 +0200326 session_store_counters(s);
Willy Tarreau2542b532012-08-31 16:01:23 +0200327
328 if (!(s->listener->options & LI_O_UNLIMITED))
329 actconn--;
330 jobs--;
331 s->listener->nbconn--;
332 if (s->listener->state == LI_FULL)
333 resume_listener(s->listener);
334
335 /* Dequeues all of the listeners waiting for a resource */
336 if (!LIST_ISEMPTY(&global_listener_queue))
337 dequeue_all_listeners(&global_listener_queue);
338
339 if (!LIST_ISEMPTY(&s->fe->listener_queue) &&
340 (!s->fe->fe_sps_lim || freq_ctr_remain(&s->fe->fe_sess_per_sec, s->fe->fe_sps_lim, 0) > 0))
341 dequeue_all_listeners(&s->fe->listener_queue);
342
343 task_delete(s->task);
344 task_free(s->task);
Willy Tarreau2542b532012-08-31 16:01:23 +0200345 pool_free2(pool2_session, s);
346}
347
Willy Tarreau22cda212012-08-31 17:43:29 +0200348/* Finish initializing a session from a connection, or kills it if the
349 * connection shows and error. Returns <0 if the connection was killed.
Willy Tarreau2542b532012-08-31 16:01:23 +0200350 */
Willy Tarreau071e1372012-10-03 01:39:48 +0200351static int conn_session_complete(struct connection *conn)
Willy Tarreau2542b532012-08-31 16:01:23 +0200352{
Willy Tarreau5e75e272012-10-02 21:21:20 +0200353 struct session *s = conn->owner;
Willy Tarreau2542b532012-08-31 16:01:23 +0200354
Willy Tarreau22cda212012-08-31 17:43:29 +0200355 if (!(conn->flags & CO_FL_ERROR) && (session_complete(s) > 0)) {
Willy Tarreau071e1372012-10-03 01:39:48 +0200356 conn->flags &= ~CO_FL_INIT_DATA;
Willy Tarreau2542b532012-08-31 16:01:23 +0200357 return 0;
358 }
359
360 /* kill the connection now */
361 kill_mini_session(s);
362 return -1;
363}
364
Willy Tarreau9683e9a2012-10-03 21:17:23 +0200365/* Update an embryonic session status. The connection is killed in case of
366 * error, and <0 will be returned. Otherwise it does nothing.
367 */
368static int conn_session_update(struct connection *conn)
369{
370 if (conn->flags & CO_FL_ERROR) {
371 kill_mini_session(conn->owner);
372 return -1;
373 }
374 return 0;
375}
376
Willy Tarreau2542b532012-08-31 16:01:23 +0200377/* Manages embryonic sessions timeout. It is only called when the timeout
378 * strikes and performs the required cleanup.
379 */
380static struct task *expire_mini_session(struct task *t)
381{
382 struct session *s = t->context;
383
384 if (!(t->state & TASK_WOKEN_TIMER))
385 return t;
386
387 kill_mini_session(s);
388 return NULL;
389}
390
391/* This function is called from the I/O handler which detects the end of
392 * handshake, in order to complete initialization of a valid session. It must
393 * be called with an embryonic session. It returns a positive value upon
394 * success, 0 if the connection can be ignored, or a negative value upon
395 * critical failure. The accepted file descriptor is closed if we return <= 0.
Willy Tarreaub4f98092014-05-08 21:06:11 +0200396 * The client-side end point is assumed to be a connection, whose pointer is
397 * taken from s->target which is assumed to be valid. If the function fails,
398 * it restores s->target.
Willy Tarreau2542b532012-08-31 16:01:23 +0200399 */
400int session_complete(struct session *s)
401{
402 struct listener *l = s->listener;
403 struct proxy *p = s->fe;
404 struct http_txn *txn;
405 struct task *t = s->task;
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200406 struct connection *conn = __objt_conn(s->target);
Willy Tarreau2542b532012-08-31 16:01:23 +0200407 int ret;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100408 int i;
Willy Tarreau2542b532012-08-31 16:01:23 +0200409
410 ret = -1; /* assume unrecoverable error by default */
411
412 /* OK, we're keeping the session, so let's properly initialize the session */
413 LIST_ADDQ(&sessions, &s->list);
414 LIST_INIT(&s->back_refs);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100415 LIST_INIT(&s->buffer_wait);
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200416
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200417 s->flags |= SN_INITIALIZED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200418 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200419
420 t->process = l->handler;
421 t->context = s;
422 t->expire = TICK_ETERNITY;
423
424 /* Note: initially, the session's backend points to the frontend.
425 * This changes later when switching rules are executed or
426 * when the default backend is assigned.
427 */
428 s->be = s->fe;
429 s->req = s->rep = NULL; /* will be allocated later */
William Lallemand82fe75c2012-10-23 10:25:10 +0200430 s->comp_algo = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200431
432 /* Let's count a session now */
Willy Tarreaub36b4242010-06-04 20:59:39 +0200433 proxy_inc_fe_sess_ctr(l, p);
Willy Tarreau91c43d72010-06-20 11:19:22 +0200434
Willy Tarreaub4c84932013-07-23 19:15:30 +0200435 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau9e9879a2010-08-06 15:25:22 +0200436 void *ptr;
437
Willy Tarreaucc08d2c2014-01-28 23:18:23 +0100438 if (!stkctr_entry(&s->stkctr[i]))
Willy Tarreau20d46a52012-12-09 15:55:40 +0100439 continue;
440
Willy Tarreaucc08d2c2014-01-28 23:18:23 +0100441 ptr = stktable_data_ptr(s->stkctr[i].table, stkctr_entry(&s->stkctr[i]), STKTABLE_DT_SESS_CNT);
Willy Tarreau9e9879a2010-08-06 15:25:22 +0200442 if (ptr)
443 stktable_data_cast(ptr, sess_cnt)++;
444
Willy Tarreaucc08d2c2014-01-28 23:18:23 +0100445 ptr = stktable_data_ptr(s->stkctr[i].table, stkctr_entry(&s->stkctr[i]), STKTABLE_DT_SESS_RATE);
Willy Tarreau9e9879a2010-08-06 15:25:22 +0200446 if (ptr)
447 update_freq_ctr_period(&stktable_data_cast(ptr, sess_rate),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100448 s->stkctr[i].table->data_arg[STKTABLE_DT_SESS_RATE].u, 1);
Willy Tarreau9e9879a2010-08-06 15:25:22 +0200449 }
450
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200451 /* this part should be common with other protocols */
452 si_reset(&s->si[0], t);
453 si_set_state(&s->si[0], SI_ST_EST);
454
Willy Tarreaub4f98092014-05-08 21:06:11 +0200455 /* attach the incoming connection to the stream interface now.
456 * We must do that *before* clearing ->target because we need
457 * to keep a pointer to the connection in case we have to call
458 * kill_mini_session().
459 */
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200460 si_attach_conn(&s->si[0], conn);
461
462 if (likely(s->fe->options2 & PR_O2_INDEPSTR))
463 s->si[0].flags |= SI_FL_INDEP_STR;
464
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200465 /* pre-initialize the other side's stream interface to an INIT state. The
466 * callbacks will be initialized before attempting to connect.
467 */
Willy Tarreau3ed35ef2013-10-24 11:51:38 +0200468 si_reset(&s->si[1], t);
Willy Tarreau2a6e8802013-10-24 15:50:53 +0200469 si_detach(&s->si[1]);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200470
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200471 if (likely(s->fe->options2 & PR_O2_INDEPSTR))
472 s->si[1].flags |= SI_FL_INDEP_STR;
473
Willy Tarreau9bd0d742011-07-20 00:17:39 +0200474 session_init_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100475 s->target = NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200476 s->pend_pos = NULL;
477
478 /* init store persistence */
479 s->store_count = 0;
480
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200481 if (unlikely((s->req = pool_alloc2(pool2_channel)) == NULL))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200482 goto out_free_task; /* no memory */
483
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200484 channel_init(s->req);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200485 s->req->prod = &s->si[0];
486 s->req->cons = &s->si[1];
487 s->si[0].ib = s->si[1].ob = s->req;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200488 s->req->flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200489
490 /* activate default analysers enabled for this listener */
491 s->req->analysers = l->analysers;
492
493 s->req->wto = TICK_ETERNITY;
494 s->req->rto = TICK_ETERNITY;
495 s->req->rex = TICK_ETERNITY;
496 s->req->wex = TICK_ETERNITY;
497 s->req->analyse_exp = TICK_ETERNITY;
498
Willy Tarreau696a2912014-11-24 11:36:57 +0100499 if (unlikely((s->rep = pool_alloc2(pool2_channel)) == NULL))
Willy Tarreau909e2672014-11-25 19:54:11 +0100500 goto out_free_req; /* no memory */
Willy Tarreau696a2912014-11-24 11:36:57 +0100501
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200502 channel_init(s->rep);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200503 s->rep->prod = &s->si[1];
504 s->rep->cons = &s->si[0];
505 s->si[0].ob = s->si[1].ib = s->rep;
506 s->rep->analysers = 0;
507
Willy Tarreau96e31212011-05-30 18:10:30 +0200508 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200509 s->req->flags |= CF_NEVER_WAIT;
510 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200511 }
512
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200513 s->rep->rto = TICK_ETERNITY;
514 s->rep->wto = TICK_ETERNITY;
515 s->rep->rex = TICK_ETERNITY;
516 s->rep->wex = TICK_ETERNITY;
517 s->rep->analyse_exp = TICK_ETERNITY;
518
Willy Tarreau62f791e2012-03-09 11:32:30 +0100519 txn = &s->txn;
520 /* Those variables will be checked and freed if non-NULL in
521 * session.c:session_free(). It is important that they are
522 * properly initialized.
523 */
524 txn->sessid = NULL;
525 txn->srv_cookie = NULL;
526 txn->cli_cookie = NULL;
527 txn->uri = NULL;
528 txn->req.cap = NULL;
529 txn->rsp.cap = NULL;
530 txn->hdr_idx.v = NULL;
531 txn->hdr_idx.size = txn->hdr_idx.used = 0;
Willy Tarreau068621e2013-12-23 15:11:25 +0100532 txn->flags = 0;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100533 txn->req.flags = 0;
534 txn->rsp.flags = 0;
535 /* the HTTP messages need to know what buffer they're associated with */
Willy Tarreau394db372012-10-12 22:40:39 +0200536 txn->req.chn = s->req;
537 txn->rsp.chn = s->rep;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100538
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200539 /* finish initialization of the accepted file descriptor */
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200540 conn_data_want_recv(conn);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200541
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100542 if (p->accept && (ret = p->accept(s)) <= 0) {
543 /* Either we had an unrecoverable error (<0) or work is
544 * finished (=0, eg: monitoring), in both situations,
545 * we can release everything and close.
546 */
Willy Tarreau10fc09e2014-11-25 19:46:36 +0100547 goto out_free_rep;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200548 }
549
Willy Tarreau93dbc2b2012-10-12 18:01:49 +0200550 /* if logs require transport layer information, note it on the connection */
551 if (s->logs.logwait & LW_XPRT)
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200552 conn->flags |= CO_FL_XPRT_TRACKED;
Willy Tarreau93dbc2b2012-10-12 18:01:49 +0200553
Willy Tarreau2542b532012-08-31 16:01:23 +0200554 /* we want the connection handler to notify the stream interface about updates. */
Willy Tarreauf8a49ea2013-10-14 21:32:07 +0200555 conn->flags |= CO_FL_WAKE_DATA;
Willy Tarreau2542b532012-08-31 16:01:23 +0200556
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200557 /* it is important not to call the wakeup function directly but to
558 * pass through task_wakeup(), because this one knows how to apply
559 * priorities to tasks.
560 */
561 task_wakeup(t, TASK_WOKEN_INIT);
562 return 1;
563
564 /* Error unrolling */
Willy Tarreau909e2672014-11-25 19:54:11 +0100565 out_free_rep:
566 pool_free2(pool2_channel, s->rep);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200567 out_free_req:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200568 pool_free2(pool2_channel, s->req);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200569 out_free_task:
Willy Tarreaub4f98092014-05-08 21:06:11 +0200570 /* and restore the connection pointer in case we destroyed it,
571 * because kill_mini_session() will need it.
572 */
Willy Tarreau3b246412014-11-25 17:10:33 +0100573 LIST_DEL(&s->list);
Willy Tarreaub4f98092014-05-08 21:06:11 +0200574 s->target = &conn->obj_type;
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100575 return ret;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200576}
577
Willy Tarreaubaaee002006-06-26 02:48:02 +0200578/*
579 * frees the context associated to a session. It must have been removed first.
580 */
Simon Hormandec5be42011-06-08 09:19:07 +0900581static void session_free(struct session *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200582{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100583 struct http_txn *txn = &s->txn;
Willy Tarreau632f5a72007-07-11 10:42:35 +0200584 struct proxy *fe = s->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100585 struct bref *bref, *back;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200586 struct connection *cli_conn = objt_conn(s->si[0].end);
Willy Tarreaua4cda672010-06-06 18:28:49 +0200587 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100588
Willy Tarreaubaaee002006-06-26 02:48:02 +0200589 if (s->pend_pos)
590 pendconn_free(s->pend_pos);
Willy Tarreau922a8062008-12-04 09:33:58 +0100591
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100592 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreau1e62de62008-11-11 20:20:02 +0100593 if (s->flags & SN_CURR_SESS) {
594 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100595 objt_server(s->target)->cur_sess--;
Willy Tarreau1e62de62008-11-11 20:20:02 +0100596 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100597 if (may_dequeue_tasks(objt_server(s->target), s->be))
598 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100599 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100600
Willy Tarreau7c669d72008-06-20 15:04:11 +0200601 if (unlikely(s->srv_conn)) {
602 /* the session still has a reserved slot on a server, but
603 * it should normally be only the same as the one above,
604 * so this should not happen in fact.
605 */
606 sess_change_server(s, NULL);
607 }
608
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100609 if (s->req->pipe)
610 put_pipe(s->req->pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100611
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100612 if (s->rep->pipe)
613 put_pipe(s->rep->pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100614
Willy Tarreaubf883e02014-11-25 21:10:35 +0100615 /* We may still be present in the buffer wait queue */
616 if (!LIST_ISEMPTY(&s->buffer_wait)) {
617 LIST_DEL(&s->buffer_wait);
618 LIST_INIT(&s->buffer_wait);
619 }
620
621 b_drop(&s->req->buf);
622 b_drop(&s->rep->buf);
623 if (!LIST_ISEMPTY(&buffer_wq))
Willy Tarreaua24adf02014-11-27 01:11:56 +0100624 session_offer_buffers();
Willy Tarreau9b28e032012-10-12 23:49:43 +0200625
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200626 pool_free2(pool2_channel, s->req);
627 pool_free2(pool2_channel, s->rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200628
Willy Tarreau46023632010-01-07 22:51:47 +0100629 http_end_txn(s);
630
Willy Tarreau1e954912012-10-12 17:50:05 +0200631 /* ensure the client-side transport layer is destroyed */
Willy Tarreauf79c8172013-10-21 16:30:56 +0200632 if (cli_conn)
633 conn_force_close(cli_conn);
Willy Tarreau1e954912012-10-12 17:50:05 +0200634
Willy Tarreaua4cda672010-06-06 18:28:49 +0200635 for (i = 0; i < s->store_count; i++) {
636 if (!s->store[i].ts)
637 continue;
638 stksess_free(s->store[i].table, s->store[i].ts);
639 s->store[i].ts = NULL;
640 }
641
Willy Tarreau34eb6712011-10-24 18:15:04 +0200642 pool_free2(pool2_hdr_idx, txn->hdr_idx.v);
Willy Tarreau92fb9832007-10-16 17:34:28 +0200643 if (fe) {
Willy Tarreau46023632010-01-07 22:51:47 +0100644 pool_free2(fe->rsp_cap_pool, txn->rsp.cap);
645 pool_free2(fe->req_cap_pool, txn->req.cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200646 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100647
Willy Tarreau7af7d592013-07-01 18:07:03 +0200648 session_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200649
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100650 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100651 /* we have to unlink all watchers. We must not relink them if
652 * this session was the last one in the list.
653 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100654 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100655 LIST_INIT(&bref->users);
656 if (s->list.n != &sessions)
657 LIST_ADDQ(&LIST_ELEM(s->list.n, struct session *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100658 bref->ref = s->list.n;
659 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100660 LIST_DEL(&s->list);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200661 si_release_endpoint(&s->si[1]);
662 si_release_endpoint(&s->si[0]);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200663 pool_free2(pool2_session, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200664
665 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200666 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200667 pool_flush2(pool2_buffer);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200668 pool_flush2(pool2_channel);
Willy Tarreau34eb6712011-10-24 18:15:04 +0200669 pool_flush2(pool2_hdr_idx);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200670 pool_flush2(pool2_requri);
671 pool_flush2(pool2_capture);
672 pool_flush2(pool2_session);
Willy Tarreau3a5e0602014-11-13 16:46:28 +0100673 pool_flush2(pool2_connection);
674 pool_flush2(pool2_pendconn);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200675 pool_flush2(fe->req_cap_pool);
676 pool_flush2(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200677 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200678}
679
Willy Tarreau656859d2014-11-25 19:46:36 +0100680/* Allocates a single buffer for session <s>, but only if it's guaranteed that
681 * it's not the last available buffer. To be called at the beginning of recv()
Willy Tarreaua24adf02014-11-27 01:11:56 +0100682 * callbacks to ensure that the required buffers are properly allocated. If the
683 * buffer is the session's request buffer, an extra control is made so that we
684 * always keep <tune.buffers.reserved> buffers available after this allocation.
685 * In all circumstances we leave at least 2 buffers so that any later call from
686 * process_session() has a chance to succeed. The response buffer is not bound
687 * to this control. Returns 0 in case of failure, non-zero otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100688 */
689int session_alloc_recv_buffer(struct session *s, struct buffer **buf)
690{
691 struct buffer *b;
Willy Tarreaua24adf02014-11-27 01:11:56 +0100692 int margin = 0;
Willy Tarreau656859d2014-11-25 19:46:36 +0100693
Willy Tarreaua24adf02014-11-27 01:11:56 +0100694 if (buf == &s->req->buf)
695 margin = global.tune.reserved_bufs;
696
697 b = b_alloc_margin(buf, margin);
Willy Tarreau656859d2014-11-25 19:46:36 +0100698 if (b)
699 return 1;
700
Willy Tarreaubf883e02014-11-25 21:10:35 +0100701 if (LIST_ISEMPTY(&s->buffer_wait))
702 LIST_ADDQ(&buffer_wq, &s->buffer_wait);
Willy Tarreau656859d2014-11-25 19:46:36 +0100703 return 0;
704}
705
Willy Tarreaua24adf02014-11-27 01:11:56 +0100706/* Allocates a work buffer for session <s>. It is meant to be called inside
707 * process_session(). It will only allocate the side needed for the function
708 * to work fine. For a regular connection, only the response is needed so that
709 * an error message may be built and returned. In case where the initiator is
710 * an applet (eg: peers), then we need to allocate the request buffer for the
711 * applet to be able to send its data (in this case a response is not needed).
712 * Request buffers are never picked from the reserved pool, but response
713 * buffers may be allocated from the reserve. This is critical to ensure that
714 * a response may always flow and will never block a server from releasing a
715 * connection. Returns 0 in case of failure, non-zero otherwise.
Willy Tarreau656859d2014-11-25 19:46:36 +0100716 */
Willy Tarreaua24adf02014-11-27 01:11:56 +0100717int session_alloc_work_buffer(struct session *s)
Willy Tarreau656859d2014-11-25 19:46:36 +0100718{
Willy Tarreaua24adf02014-11-27 01:11:56 +0100719 int margin;
720 struct buffer **buf;
721
722 if (objt_appctx(s->si[0].end)) {
723 buf = &s->req->buf;
724 margin = global.tune.reserved_bufs;
725 }
726 else {
727 buf = &s->rep->buf;
728 margin = 0;
729 }
730
Willy Tarreaubf883e02014-11-25 21:10:35 +0100731 if (!LIST_ISEMPTY(&s->buffer_wait)) {
732 LIST_DEL(&s->buffer_wait);
733 LIST_INIT(&s->buffer_wait);
734 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100735
Willy Tarreaua24adf02014-11-27 01:11:56 +0100736 if (b_alloc_margin(buf, margin))
Willy Tarreau656859d2014-11-25 19:46:36 +0100737 return 1;
738
Willy Tarreaubf883e02014-11-25 21:10:35 +0100739 LIST_ADDQ(&buffer_wq, &s->buffer_wait);
Willy Tarreau656859d2014-11-25 19:46:36 +0100740 return 0;
741}
742
743/* releases unused buffers after processing. Typically used at the end of the
Willy Tarreaubf883e02014-11-25 21:10:35 +0100744 * update() functions. It will try to wake up as many tasks as the number of
745 * buffers that it releases. In practice, most often sessions are blocked on
746 * a single buffer, so it makes sense to try to wake two up when two buffers
747 * are released at once.
Willy Tarreau656859d2014-11-25 19:46:36 +0100748 */
749void session_release_buffers(struct session *s)
750{
751 if (s->req->buf->size && buffer_empty(s->req->buf))
752 b_free(&s->req->buf);
753
754 if (s->rep->buf->size && buffer_empty(s->rep->buf))
755 b_free(&s->rep->buf);
756
Willy Tarreaubf883e02014-11-25 21:10:35 +0100757 /* if we're certain to have at least 1 buffer available, and there is
758 * someone waiting, we can wake up a waiter and offer them.
759 */
Willy Tarreaua24adf02014-11-27 01:11:56 +0100760 if (!LIST_ISEMPTY(&buffer_wq))
761 session_offer_buffers();
Willy Tarreaubf883e02014-11-25 21:10:35 +0100762}
763
Willy Tarreaua24adf02014-11-27 01:11:56 +0100764/* Runs across the list of pending sessions waiting for a buffer and wakes one
765 * up if buffers are available. Will stop when the run queue reaches <rqlimit>.
766 * Should not be called directly, use session_offer_buffers() instead.
Willy Tarreaubf883e02014-11-25 21:10:35 +0100767 */
Willy Tarreaua24adf02014-11-27 01:11:56 +0100768void __session_offer_buffers(int rqlimit)
Willy Tarreaubf883e02014-11-25 21:10:35 +0100769{
770 struct session *sess, *bak;
771
772 list_for_each_entry_safe(sess, bak, &buffer_wq, buffer_wait) {
Willy Tarreaua24adf02014-11-27 01:11:56 +0100773 if (rqlimit <= run_queue)
774 break;
775
Willy Tarreaubf883e02014-11-25 21:10:35 +0100776 if (sess->task->state & TASK_RUNNING)
777 continue;
778
779 LIST_DEL(&sess->buffer_wait);
780 LIST_INIT(&sess->buffer_wait);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100781 task_wakeup(sess->task, TASK_WOKEN_RES);
Willy Tarreaubf883e02014-11-25 21:10:35 +0100782 }
Willy Tarreau656859d2014-11-25 19:46:36 +0100783}
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200784
785/* perform minimal intializations, report 0 in case of error, 1 if OK. */
786int init_session()
787{
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100788 LIST_INIT(&sessions);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200789 pool2_session = create_pool("session", sizeof(struct session), MEM_F_SHARED);
790 return pool2_session != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200791}
792
Willy Tarreau30e71012007-11-26 20:15:35 +0100793void session_process_counters(struct session *s)
794{
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100795 unsigned long long bytes;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100796 void *ptr;
797 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100798
Willy Tarreau30e71012007-11-26 20:15:35 +0100799 if (s->req) {
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100800 bytes = s->req->total - s->logs.bytes_in;
Willy Tarreau30e71012007-11-26 20:15:35 +0100801 s->logs.bytes_in = s->req->total;
802 if (bytes) {
Willy Tarreau20d46a52012-12-09 15:55:40 +0100803 s->fe->fe_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100804
Willy Tarreau20d46a52012-12-09 15:55:40 +0100805 s->be->be_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100806
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100807 if (objt_server(s->target))
Willy Tarreau20d46a52012-12-09 15:55:40 +0100808 objt_server(s->target)->counters.bytes_in += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200809
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +0100810 if (s->listener && s->listener->counters)
Willy Tarreau20d46a52012-12-09 15:55:40 +0100811 s->listener->counters->bytes_in += bytes;
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200812
Willy Tarreaub4c84932013-07-23 19:15:30 +0200813 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreaucc08d2c2014-01-28 23:18:23 +0100814 if (!stkctr_entry(&s->stkctr[i]))
Willy Tarreau20d46a52012-12-09 15:55:40 +0100815 continue;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200816
Willy Tarreau20d46a52012-12-09 15:55:40 +0100817 ptr = stktable_data_ptr(s->stkctr[i].table,
Willy Tarreaucc08d2c2014-01-28 23:18:23 +0100818 stkctr_entry(&s->stkctr[i]),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100819 STKTABLE_DT_BYTES_IN_CNT);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200820 if (ptr)
821 stktable_data_cast(ptr, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200822
Willy Tarreau20d46a52012-12-09 15:55:40 +0100823 ptr = stktable_data_ptr(s->stkctr[i].table,
Willy Tarreaucc08d2c2014-01-28 23:18:23 +0100824 stkctr_entry(&s->stkctr[i]),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100825 STKTABLE_DT_BYTES_IN_RATE);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200826 if (ptr)
827 update_freq_ctr_period(&stktable_data_cast(ptr, bytes_in_rate),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100828 s->stkctr[i].table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200829 }
Willy Tarreau30e71012007-11-26 20:15:35 +0100830 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100831 }
832
Willy Tarreau30e71012007-11-26 20:15:35 +0100833 if (s->rep) {
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100834 bytes = s->rep->total - s->logs.bytes_out;
Willy Tarreau30e71012007-11-26 20:15:35 +0100835 s->logs.bytes_out = s->rep->total;
836 if (bytes) {
Willy Tarreau20d46a52012-12-09 15:55:40 +0100837 s->fe->fe_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100838
Willy Tarreau20d46a52012-12-09 15:55:40 +0100839 s->be->be_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100840
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100841 if (objt_server(s->target))
Willy Tarreau20d46a52012-12-09 15:55:40 +0100842 objt_server(s->target)->counters.bytes_out += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200843
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +0100844 if (s->listener && s->listener->counters)
Willy Tarreau20d46a52012-12-09 15:55:40 +0100845 s->listener->counters->bytes_out += bytes;
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200846
Willy Tarreaub4c84932013-07-23 19:15:30 +0200847 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreaucc08d2c2014-01-28 23:18:23 +0100848 if (!stkctr_entry(&s->stkctr[i]))
Willy Tarreau20d46a52012-12-09 15:55:40 +0100849 continue;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200850
Willy Tarreau20d46a52012-12-09 15:55:40 +0100851 ptr = stktable_data_ptr(s->stkctr[i].table,
Willy Tarreaucc08d2c2014-01-28 23:18:23 +0100852 stkctr_entry(&s->stkctr[i]),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100853 STKTABLE_DT_BYTES_OUT_CNT);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200854 if (ptr)
855 stktable_data_cast(ptr, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200856
Willy Tarreau20d46a52012-12-09 15:55:40 +0100857 ptr = stktable_data_ptr(s->stkctr[i].table,
Willy Tarreaucc08d2c2014-01-28 23:18:23 +0100858 stkctr_entry(&s->stkctr[i]),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100859 STKTABLE_DT_BYTES_OUT_RATE);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200860 if (ptr)
861 update_freq_ctr_period(&stktable_data_cast(ptr, bytes_out_rate),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100862 s->stkctr[i].table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200863 }
Willy Tarreau30e71012007-11-26 20:15:35 +0100864 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100865 }
866}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200867
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100868/* This function is called with (si->state == SI_ST_CON) meaning that a
869 * connection was attempted and that the file descriptor is already allocated.
870 * We must check for establishment, error and abort. Possible output states
871 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
872 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200873 * otherwise 1. This only works with connection-based sessions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100874 */
Simon Hormandec5be42011-06-08 09:19:07 +0900875static int sess_update_st_con_tcp(struct session *s, struct stream_interface *si)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100876{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200877 struct channel *req = si->ob;
878 struct channel *rep = si->ib;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200879 struct connection *srv_conn = __objt_conn(si->end);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100880
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100881 /* If we got an error, or if nothing happened and the connection timed
882 * out, we must give up. The CER state handler will take care of retry
883 * attempts and error reports.
884 */
885 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100886 if (unlikely(si->ob->flags & CF_WRITE_PARTIAL)) {
887 /* Some data were sent past the connection establishment,
888 * so we need to pretend we're established to log correctly
889 * and let later states handle the failure.
890 */
Willy Tarreaue3224e82012-10-29 22:41:31 +0100891 si->state = SI_ST_EST;
892 si->err_type = SI_ET_DATA_ERR;
893 si->ib->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreaue3224e82012-10-29 22:41:31 +0100894 return 1;
895 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100896 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100897 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100898
Willy Tarreauf79c8172013-10-21 16:30:56 +0200899 conn_force_close(srv_conn);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100900
901 if (si->err_type)
902 return 0;
903
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100904 if (si->flags & SI_FL_ERR)
905 si->err_type = SI_ET_CONN_ERR;
906 else
907 si->err_type = SI_ET_CONN_TO;
908 return 0;
909 }
910
911 /* OK, maybe we want to abort */
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100912 if (!(req->flags & CF_WRITE_PARTIAL) &&
913 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200914 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
915 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100916 s->be->options & PR_O_ABRT_CLOSE)))) {
917 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200918 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100919 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau84455332009-03-15 22:34:05 +0100920 if (s->srv_error)
921 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100922 return 1;
923 }
924
925 /* we need to wait a bit more if there was no activity either */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200926 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100927 return 1;
928
929 /* OK, this means that a connection succeeded. The caller will be
930 * responsible for handling the transition from CON to EST.
931 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100932 si->state = SI_ST_EST;
933 si->err_type = SI_ET_NONE;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100934 return 1;
935}
936
937/* This function is called with (si->state == SI_ST_CER) meaning that a
938 * previous connection attempt has failed and that the file descriptor
939 * has already been released. Possible causes include asynchronous error
940 * notification and time out. Possible output states are SI_ST_CLO when
941 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
942 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
943 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
944 * marked as in error state. It returns 0.
945 */
Simon Hormandec5be42011-06-08 09:19:07 +0900946static int sess_update_st_cer(struct session *s, struct stream_interface *si)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100947{
948 /* we probably have to release last session from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100949 if (objt_server(s->target)) {
950 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100951
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100952 if (s->flags & SN_CURR_SESS) {
953 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100954 objt_server(s->target)->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100955 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100956 }
957
958 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200959 si->conn_retries--;
960 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100961 if (!si->err_type) {
962 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100963 }
964
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100965 if (objt_server(s->target))
966 objt_server(s->target)->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100967 s->be->be_counters.failed_conns++;
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100968 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100969 if (may_dequeue_tasks(objt_server(s->target), s->be))
970 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100971
972 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200973 si_shutw(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200974 si->ob->flags |= CF_WRITE_ERROR;
975 si->ib->flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100976
977 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100978 if (s->srv_error)
979 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100980 return 0;
981 }
982
983 /* If the "redispatch" option is set on the backend, we are allowed to
984 * retry on another server for the last retry. In order to achieve this,
985 * we must mark the session unassigned, and eventually clear the DIRECT
986 * bit to ignore any persistence cookie. We won't count a retry nor a
987 * redispatch yet, because this will depend on what server is selected.
Willy Tarreau33a14e52014-06-13 17:49:40 +0200988 * If the connection is not persistent, the balancing algorithm is not
989 * determinist (round robin) and there is more than one active server,
990 * we accept to perform an immediate redispatch without waiting since
991 * we don't care about this particular server.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100992 */
Willy Tarreau33a14e52014-06-13 17:49:40 +0200993 if (objt_server(s->target) &&
994 (si->conn_retries == 0 ||
995 (!(s->flags & SN_DIRECT) && s->be->srv_act > 1 &&
996 ((s->be->lbprm.algo & BE_LB_KIND) == BE_LB_KIND_RR))) &&
Willy Tarreau4de91492010-01-22 19:10:05 +0100997 s->be->options & PR_O_REDISP && !(s->flags & SN_FORCE_PRST)) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100998 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100999 if (may_dequeue_tasks(objt_server(s->target), s->be))
1000 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001001
1002 s->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001003 si->state = SI_ST_REQ;
1004 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001005 if (objt_server(s->target))
1006 objt_server(s->target)->counters.retries++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001007 s->be->be_counters.retries++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001008 si->state = SI_ST_ASS;
1009 }
1010
1011 if (si->flags & SI_FL_ERR) {
1012 /* The error was an asynchronous connection error, and we will
1013 * likely have to retry connecting to the same server, most
1014 * likely leading to the same result. To avoid this, we wait
Willy Tarreaub0290662014-06-13 17:04:44 +02001015 * MIN(one second, connect timeout) before retrying.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001016 */
1017
Willy Tarreaub0290662014-06-13 17:04:44 +02001018 int delay = 1000;
1019
1020 if (s->be->timeout.connect && s->be->timeout.connect < delay)
1021 delay = s->be->timeout.connect;
1022
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001023 if (!si->err_type)
1024 si->err_type = SI_ET_CONN_ERR;
1025
Willy Tarreaudb6d0122014-06-13 17:40:15 +02001026 /* only wait when we're retrying on the same server */
1027 if (si->state == SI_ST_ASS ||
1028 (s->be->lbprm.algo & BE_LB_KIND) != BE_LB_KIND_RR ||
1029 (s->be->srv_act <= 1)) {
1030 si->state = SI_ST_TAR;
1031 si->exp = tick_add(now_ms, MS_TO_TICKS(delay));
1032 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001033 return 0;
1034 }
1035 return 0;
1036}
1037
1038/*
1039 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +02001040 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +02001041 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001042 */
Simon Hormandec5be42011-06-08 09:19:07 +09001043static void sess_establish(struct session *s, struct stream_interface *si)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001044{
Willy Tarreau7421efb2012-07-02 15:11:27 +02001045 struct channel *req = si->ob;
1046 struct channel *rep = si->ib;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001047
Willy Tarreau0e37f1c2013-12-31 23:06:46 +01001048 /* First, centralize the timers information */
1049 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
1050 si->exp = TICK_ETERNITY;
1051
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001052 if (objt_server(s->target))
1053 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +01001054
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001055 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001056 /* if the user wants to log as soon as possible, without counting
1057 * bytes from the server, then this is the right moment. */
Willy Tarreaud79a3b22012-12-28 09:40:16 +01001058 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001059 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +01001060 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001061 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001062 }
1063 else {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001064 s->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
Willy Tarreaud81ca042013-12-31 22:33:13 +01001065 rep->flags |= CF_READ_DONTWAIT; /* a single read is enough to get response headers */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001066 }
1067
Willy Tarreau4e5b8282009-08-16 22:57:50 +02001068 rep->analysers |= s->fe->fe_rsp_ana | s->be->be_rsp_ana;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001069 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau644c1012014-04-30 18:11:11 +02001070 if (req->flags & CF_WAKE_CONNECT) {
1071 req->flags |= CF_WAKE_ONCE;
1072 req->flags &= ~CF_WAKE_CONNECT;
1073 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +02001074 if (objt_conn(si->end)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +02001075 /* real connections have timeouts */
1076 req->wto = s->be->timeout.server;
1077 rep->rto = s->be->timeout.server;
1078 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001079 req->wex = TICK_ETERNITY;
1080}
1081
1082/* Update stream interface status for input states SI_ST_ASS, SI_ST_QUE, SI_ST_TAR.
1083 * Other input states are simply ignored.
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01001084 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON
1085 * and SI_ST_EST. Flags must have previously been updated for timeouts and other
1086 * conditions.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001087 */
Simon Hormandec5be42011-06-08 09:19:07 +09001088static void sess_update_stream_int(struct session *s, struct stream_interface *si)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001089{
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001090 struct server *srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001091
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001092 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 +01001093 now_ms, __FUNCTION__,
1094 s,
1095 s->req, s->rep,
1096 s->req->rex, s->rep->wex,
1097 s->req->flags, s->rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001098 s->req->buf->i, s->req->buf->o, s->rep->buf->i, s->rep->buf->o, s->rep->cons->state, s->req->cons->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001099
1100 if (si->state == SI_ST_ASS) {
1101 /* Server assigned to connection request, we have to try to connect now */
1102 int conn_err;
1103
1104 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001105 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001106
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001107 if (conn_err == SN_ERR_NONE) {
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01001108 /* state = SI_ST_CON or SI_ST_EST now */
Willy Tarreau827aee92011-03-10 16:55:02 +01001109 if (srv)
1110 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -05001111 if (srv)
1112 srv_set_sess_last(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001113 return;
1114 }
1115
1116 /* We have received a synchronous error. We might have to
1117 * abort, retry immediately or redispatch.
1118 */
1119 if (conn_err == SN_ERR_INTERNAL) {
1120 if (!si->err_type) {
1121 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001122 }
1123
Willy Tarreau827aee92011-03-10 16:55:02 +01001124 if (srv)
1125 srv_inc_sess_ctr(srv);
1126 if (srv)
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -05001127 srv_set_sess_last(srv);
1128 if (srv)
Willy Tarreau827aee92011-03-10 16:55:02 +01001129 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001130 s->be->be_counters.failed_conns++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001131
1132 /* release other sessions waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +01001133 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001134 if (may_dequeue_tasks(srv, s->be))
1135 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001136
1137 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001138 si_shutr(si);
1139 si_shutw(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001140 si->ob->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001141
1142 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1143
1144 /* no session was ever accounted for this server */
1145 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001146 if (s->srv_error)
1147 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001148 return;
1149 }
1150
1151 /* We are facing a retryable error, but we don't want to run a
1152 * turn-around now, as the problem is likely a source port
1153 * allocation problem, so we want to retry now.
1154 */
1155 si->state = SI_ST_CER;
1156 si->flags &= ~SI_FL_ERR;
1157 sess_update_st_cer(s, si);
1158 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
1159 return;
1160 }
1161 else if (si->state == SI_ST_QUE) {
1162 /* connection request was queued, check for any update */
1163 if (!s->pend_pos) {
1164 /* The connection is not in the queue anymore. Either
1165 * we have a server connection slot available and we
1166 * go directly to the assigned state, or we need to
1167 * load-balance first and go to the INI state.
1168 */
1169 si->exp = TICK_ETERNITY;
1170 if (unlikely(!(s->flags & SN_ASSIGNED)))
1171 si->state = SI_ST_REQ;
1172 else {
1173 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1174 si->state = SI_ST_ASS;
1175 }
1176 return;
1177 }
1178
1179 /* Connection request still in queue... */
1180 if (si->flags & SI_FL_EXP) {
1181 /* ... and timeout expired */
1182 si->exp = TICK_ETERNITY;
1183 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau827aee92011-03-10 16:55:02 +01001184 if (srv)
1185 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001186 s->be->be_counters.failed_conns++;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001187 si_shutr(si);
1188 si_shutw(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001189 si->ob->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001190 if (!si->err_type)
1191 si->err_type = SI_ET_QUEUE_TO;
1192 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001193 if (s->srv_error)
1194 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001195 return;
1196 }
1197
1198 /* Connection remains in queue, check if we have to abort it */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001199 if ((si->ob->flags & (CF_READ_ERROR)) ||
1200 ((si->ob->flags & CF_SHUTW_NOW) && /* empty and client aborted */
Willy Tarreau8e21bb92012-08-24 22:40:29 +02001201 (channel_is_empty(si->ob) || s->be->options & PR_O_ABRT_CLOSE))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001202 /* give up */
1203 si->exp = TICK_ETERNITY;
1204 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau73b013b2012-05-21 16:31:45 +02001205 si_shutr(si);
1206 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001207 si->err_type |= SI_ET_QUEUE_ABRT;
1208 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001209 if (s->srv_error)
1210 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001211 return;
1212 }
1213
1214 /* Nothing changed */
1215 return;
1216 }
1217 else if (si->state == SI_ST_TAR) {
1218 /* Connection request might be aborted */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001219 if ((si->ob->flags & (CF_READ_ERROR)) ||
1220 ((si->ob->flags & CF_SHUTW_NOW) && /* empty and client aborted */
Willy Tarreau8e21bb92012-08-24 22:40:29 +02001221 (channel_is_empty(si->ob) || s->be->options & PR_O_ABRT_CLOSE))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001222 /* give up */
1223 si->exp = TICK_ETERNITY;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001224 si_shutr(si);
1225 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001226 si->err_type |= SI_ET_CONN_ABRT;
1227 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001228 if (s->srv_error)
1229 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001230 return;
1231 }
1232
1233 if (!(si->flags & SI_FL_EXP))
1234 return; /* still in turn-around */
1235
1236 si->exp = TICK_ETERNITY;
1237
1238 /* we keep trying on the same server as long as the session is
1239 * marked "assigned".
1240 * FIXME: Should we force a redispatch attempt when the server is down ?
1241 */
1242 if (s->flags & SN_ASSIGNED)
1243 si->state = SI_ST_ASS;
1244 else
1245 si->state = SI_ST_REQ;
1246 return;
1247 }
1248}
1249
Simon Hormandec5be42011-06-08 09:19:07 +09001250/* Set correct session termination flags in case no analyser has done it. It
1251 * also counts a failed request if the server state has not reached the request
1252 * stage.
1253 */
1254static void sess_set_term_flags(struct session *s)
1255{
1256 if (!(s->flags & SN_FINST_MASK)) {
1257 if (s->si[1].state < SI_ST_REQ) {
1258
1259 s->fe->fe_counters.failed_req++;
1260 if (s->listener->counters)
1261 s->listener->counters->failed_req++;
1262
1263 s->flags |= SN_FINST_R;
1264 }
1265 else if (s->si[1].state == SI_ST_QUE)
1266 s->flags |= SN_FINST_Q;
1267 else if (s->si[1].state < SI_ST_EST)
1268 s->flags |= SN_FINST_C;
1269 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
1270 s->flags |= SN_FINST_D;
1271 else
1272 s->flags |= SN_FINST_L;
1273 }
1274}
1275
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001276/* This function initiates a server connection request on a stream interface
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001277 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS for
1278 * a real connection to a server, indicating that a server has been assigned,
1279 * or SI_ST_EST for a successful connection to an applet. It may also return
1280 * SI_ST_QUE, or SI_ST_CLO upon error.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001281 */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001282static void sess_prepare_conn_req(struct session *s, struct stream_interface *si)
1283{
1284 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 +01001285 now_ms, __FUNCTION__,
1286 s,
1287 s->req, s->rep,
1288 s->req->rex, s->rep->wex,
1289 s->req->flags, s->rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001290 s->req->buf->i, s->req->buf->o, s->rep->buf->i, s->rep->buf->o, s->rep->cons->state, s->req->cons->state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001291
1292 if (si->state != SI_ST_REQ)
1293 return;
1294
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001295 if (unlikely(obj_type(s->target) == OBJ_TYPE_APPLET)) {
1296 /* the applet directly goes to the EST state */
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001297 struct appctx *appctx = objt_appctx(si->end);
1298
1299 if (!appctx || appctx->applet != __objt_applet(s->target))
1300 appctx = stream_int_register_handler(si, objt_applet(s->target));
1301
1302 if (!appctx) {
1303 /* No more memory, let's immediately abort. Force the
1304 * error code to ignore the ERR_LOCAL which is not a
1305 * real error.
1306 */
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001307 s->flags &= ~(SN_ERR_MASK | SN_FINST_MASK);
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001308
1309 si_shutr(si);
1310 si_shutw(si);
1311 si->ob->flags |= CF_WRITE_ERROR;
Willy Tarreau6bbb2f62013-12-09 17:14:23 +01001312 si->err_type = SI_ET_CONN_RES;
Willy Tarreau4384ddf2013-12-01 12:25:52 +01001313 si->state = SI_ST_CLO;
1314 if (s->srv_error)
1315 s->srv_error(s, si);
1316 return;
1317 }
1318
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001319 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001320 si->state = SI_ST_EST;
1321 si->err_type = SI_ET_NONE;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001322 be_set_sess_last(s->be);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01001323 /* let sess_establish() finish the job */
Willy Tarreaud84fb5e2013-11-30 09:06:53 +01001324 return;
1325 }
1326
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001327 /* Try to assign a server */
1328 if (srv_redispatch_connect(s) != 0) {
1329 /* We did not get a server. Either we queued the
1330 * connection request, or we encountered an error.
1331 */
1332 if (si->state == SI_ST_QUE)
1333 return;
1334
1335 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001336 si_shutr(si);
1337 si_shutw(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001338 si->ob->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001339 if (!si->err_type)
1340 si->err_type = SI_ET_CONN_OTHER;
1341 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001342 if (s->srv_error)
1343 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001344 return;
1345 }
1346
1347 /* The server is assigned */
1348 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1349 si->state = SI_ST_ASS;
Willy Tarreaub9a551e2014-04-23 00:35:17 +02001350 be_set_sess_last(s->be);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001351}
1352
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001353/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001354 * if appropriate. The default_backend rule is also considered, then the
1355 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001356 * It returns 1 if the processing can continue on next analysers, or zero if it
1357 * either needs more data or wants to immediately abort the request.
1358 */
Willy Tarreau7421efb2012-07-02 15:11:27 +02001359static int process_switching_rules(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001360{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001361 struct persist_rule *prst_rule;
Willy Tarreau4de91492010-01-22 19:10:05 +01001362
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001363 req->analysers &= ~an_bit;
1364 req->analyse_exp = TICK_ETERNITY;
1365
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001366 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001367 now_ms, __FUNCTION__,
1368 s,
1369 req,
1370 req->rex, req->wex,
1371 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001372 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001373 req->analysers);
1374
1375 /* now check whether we have some switching rules for this request */
1376 if (!(s->flags & SN_BE_ASSIGNED)) {
1377 struct switching_rule *rule;
1378
1379 list_for_each_entry(rule, &s->fe->switching_rules, list) {
Willy Tarreauf51658d2014-04-23 01:21:56 +02001380 int ret = 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001381
Willy Tarreauf51658d2014-04-23 01:21:56 +02001382 if (rule->cond) {
1383 ret = acl_exec_cond(rule->cond, s->fe, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
1384 ret = acl_pass(ret);
1385 if (rule->cond->pol == ACL_COND_UNLESS)
1386 ret = !ret;
1387 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001388
1389 if (ret) {
Bertrand Jacquin702d44f2013-11-19 11:43:06 +01001390 /* If the backend name is dynamic, try to resolve the name.
1391 * If we can't resolve the name, or if any error occurs, break
1392 * the loop and fallback to the default backend.
1393 */
1394 struct proxy *backend;
1395
1396 if (rule->dynamic) {
1397 struct chunk *tmp = get_trash_chunk();
1398 if (!build_logline(s, tmp->str, tmp->size, &rule->be.expr))
1399 break;
1400 backend = findproxy(tmp->str, PR_CAP_BE);
1401 if (!backend)
1402 break;
1403 }
1404 else
1405 backend = rule->be.backend;
1406
1407 if (!session_set_backend(s, backend))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001408 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001409 break;
1410 }
1411 }
1412
1413 /* To ensure correct connection accounting on the backend, we
1414 * have to assign one if it was not set (eg: a listen). This
1415 * measure also takes care of correctly setting the default
1416 * backend if any.
1417 */
1418 if (!(s->flags & SN_BE_ASSIGNED))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001419 if (!session_set_backend(s, s->fe->defbe.be ? s->fe->defbe.be : s->be))
1420 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001421 }
1422
Willy Tarreaufb356202010-08-03 14:02:05 +02001423 /* we don't want to run the TCP or HTTP filters again if the backend has not changed */
1424 if (s->fe == s->be) {
1425 s->req->analysers &= ~AN_REQ_INSPECT_BE;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001426 s->req->analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001427 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001428
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001429 /* as soon as we know the backend, we must check if we have a matching forced or ignored
Willy Tarreau4de91492010-01-22 19:10:05 +01001430 * persistence rule, and report that in the session.
1431 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001432 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001433 int ret = 1;
1434
1435 if (prst_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001436 ret = acl_exec_cond(prst_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4de91492010-01-22 19:10:05 +01001437 ret = acl_pass(ret);
1438 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1439 ret = !ret;
1440 }
1441
1442 if (ret) {
1443 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001444 if (prst_rule->type == PERSIST_TYPE_FORCE) {
1445 s->flags |= SN_FORCE_PRST;
1446 } else {
1447 s->flags |= SN_IGNORE_PRST;
1448 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001449 break;
1450 }
1451 }
1452
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001453 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001454
1455 sw_failed:
1456 /* immediately abort this request in case of allocation failure */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001457 channel_abort(s->req);
1458 channel_abort(s->rep);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001459
1460 if (!(s->flags & SN_ERR_MASK))
1461 s->flags |= SN_ERR_RESOURCE;
1462 if (!(s->flags & SN_FINST_MASK))
1463 s->flags |= SN_FINST_R;
1464
1465 s->txn.status = 500;
1466 s->req->analysers = 0;
1467 s->req->analyse_exp = TICK_ETERNITY;
1468 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001469}
1470
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001471/* This stream analyser works on a request. It applies all use-server rules on
1472 * it then returns 1. The data must already be present in the buffer otherwise
1473 * they won't match. It always returns 1.
1474 */
Willy Tarreau7421efb2012-07-02 15:11:27 +02001475static int process_server_rules(struct session *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001476{
1477 struct proxy *px = s->be;
1478 struct server_rule *rule;
1479
1480 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
1481 now_ms, __FUNCTION__,
1482 s,
1483 req,
1484 req->rex, req->wex,
1485 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001486 req->buf->i + req->buf->o,
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001487 req->analysers);
1488
1489 if (!(s->flags & SN_ASSIGNED)) {
1490 list_for_each_entry(rule, &px->server_rules, list) {
1491 int ret;
1492
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001493 ret = acl_exec_cond(rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001494 ret = acl_pass(ret);
1495 if (rule->cond->pol == ACL_COND_UNLESS)
1496 ret = !ret;
1497
1498 if (ret) {
1499 struct server *srv = rule->srv.ptr;
1500
Willy Tarreau892337c2014-05-13 23:41:20 +02001501 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001502 (px->options & PR_O_PERSIST) ||
1503 (s->flags & SN_FORCE_PRST)) {
1504 s->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001505 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001506 break;
1507 }
1508 /* if the server is not UP, let's go on with next rules
1509 * just in case another one is suited.
1510 */
1511 }
1512 }
1513 }
1514
1515 req->analysers &= ~an_bit;
1516 req->analyse_exp = TICK_ETERNITY;
1517 return 1;
1518}
1519
Emeric Brun1d33b292010-01-04 15:47:17 +01001520/* This stream analyser works on a request. It applies all sticking rules on
1521 * it then returns 1. The data must already be present in the buffer otherwise
1522 * they won't match. It always returns 1.
1523 */
Willy Tarreau7421efb2012-07-02 15:11:27 +02001524static int process_sticking_rules(struct session *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001525{
1526 struct proxy *px = s->be;
1527 struct sticking_rule *rule;
1528
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001529 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001530 now_ms, __FUNCTION__,
1531 s,
1532 req,
1533 req->rex, req->wex,
1534 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001535 req->buf->i,
Emeric Brun1d33b292010-01-04 15:47:17 +01001536 req->analysers);
1537
1538 list_for_each_entry(rule, &px->sticking_rules, list) {
1539 int ret = 1 ;
1540 int i;
1541
Willy Tarreau9667a802013-12-09 12:52:13 +01001542 /* Only the first stick store-request of each table is applied
1543 * and other ones are ignored. The purpose is to allow complex
1544 * configurations which look for multiple entries by decreasing
1545 * order of precision and to stop at the first which matches.
1546 * An example could be a store of the IP address from an HTTP
1547 * header first, then from the source if not found.
1548 */
Emeric Brun1d33b292010-01-04 15:47:17 +01001549 for (i = 0; i < s->store_count; i++) {
1550 if (rule->table.t == s->store[i].table)
1551 break;
1552 }
1553
1554 if (i != s->store_count)
1555 continue;
1556
1557 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001558 ret = acl_exec_cond(rule->cond, px, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001559 ret = acl_pass(ret);
1560 if (rule->cond->pol == ACL_COND_UNLESS)
1561 ret = !ret;
1562 }
1563
1564 if (ret) {
1565 struct stktable_key *key;
1566
Willy Tarreaub5975de2014-06-25 16:20:53 +02001567 key = stktable_fetch_key(rule->table.t, px, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->expr, NULL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001568 if (!key)
1569 continue;
1570
1571 if (rule->flags & STK_IS_MATCH) {
1572 struct stksess *ts;
1573
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001574 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001575 if (!(s->flags & SN_ASSIGNED)) {
1576 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001577 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001578
1579 /* srv found in table */
Willy Tarreau13c29de2010-06-06 16:40:39 +02001580 ptr = stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
1581 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Emeric Brun1d33b292010-01-04 15:47:17 +01001582 if (node) {
1583 struct server *srv;
1584
1585 srv = container_of(node, struct server, conf.id);
Willy Tarreau892337c2014-05-13 23:41:20 +02001586 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreau4de91492010-01-22 19:10:05 +01001587 (px->options & PR_O_PERSIST) ||
1588 (s->flags & SN_FORCE_PRST)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001589 s->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001590 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001591 }
1592 }
1593 }
Emeric Brun85e77c72010-09-23 18:16:52 +02001594 stktable_touch(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001595 }
1596 }
1597 if (rule->flags & STK_IS_STORE) {
1598 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1599 struct stksess *ts;
1600
1601 ts = stksess_new(rule->table.t, key);
1602 if (ts) {
1603 s->store[s->store_count].table = rule->table.t;
1604 s->store[s->store_count++].ts = ts;
1605 }
1606 }
1607 }
1608 }
1609 }
1610
1611 req->analysers &= ~an_bit;
1612 req->analyse_exp = TICK_ETERNITY;
1613 return 1;
1614}
1615
1616/* This stream analyser works on a response. It applies all store rules on it
1617 * then returns 1. The data must already be present in the buffer otherwise
1618 * they won't match. It always returns 1.
1619 */
Willy Tarreau7421efb2012-07-02 15:11:27 +02001620static int process_store_rules(struct session *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001621{
1622 struct proxy *px = s->be;
1623 struct sticking_rule *rule;
1624 int i;
Willy Tarreau9667a802013-12-09 12:52:13 +01001625 int nbreq = s->store_count;
Emeric Brun1d33b292010-01-04 15:47:17 +01001626
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001627 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Emeric Brun1d33b292010-01-04 15:47:17 +01001628 now_ms, __FUNCTION__,
1629 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001630 rep,
1631 rep->rex, rep->wex,
1632 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001633 rep->buf->i,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001634 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001635
1636 list_for_each_entry(rule, &px->storersp_rules, list) {
1637 int ret = 1 ;
Emeric Brun1d33b292010-01-04 15:47:17 +01001638
Willy Tarreau9667a802013-12-09 12:52:13 +01001639 /* Only the first stick store-response of each table is applied
1640 * and other ones are ignored. The purpose is to allow complex
1641 * configurations which look for multiple entries by decreasing
1642 * order of precision and to stop at the first which matches.
1643 * An example could be a store of a set-cookie value, with a
1644 * fallback to a parameter found in a 302 redirect.
1645 *
1646 * The store-response rules are not allowed to override the
1647 * store-request rules for the same table, but they may coexist.
1648 * Thus we can have up to one store-request entry and one store-
1649 * response entry for the same table at any time.
1650 */
1651 for (i = nbreq; i < s->store_count; i++) {
1652 if (rule->table.t == s->store[i].table)
1653 break;
1654 }
1655
1656 /* skip existing entries for this table */
1657 if (i < s->store_count)
1658 continue;
1659
Emeric Brun1d33b292010-01-04 15:47:17 +01001660 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001661 ret = acl_exec_cond(rule->cond, px, s, &s->txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001662 ret = acl_pass(ret);
1663 if (rule->cond->pol == ACL_COND_UNLESS)
1664 ret = !ret;
1665 }
1666
1667 if (ret) {
1668 struct stktable_key *key;
1669
Willy Tarreaub5975de2014-06-25 16:20:53 +02001670 key = stktable_fetch_key(rule->table.t, px, s, &s->txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL, rule->expr, NULL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001671 if (!key)
1672 continue;
1673
Willy Tarreau37e340c2013-12-06 23:05:21 +01001674 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001675 struct stksess *ts;
1676
1677 ts = stksess_new(rule->table.t, key);
1678 if (ts) {
1679 s->store[s->store_count].table = rule->table.t;
Emeric Brun1d33b292010-01-04 15:47:17 +01001680 s->store[s->store_count++].ts = ts;
1681 }
1682 }
1683 }
1684 }
1685
1686 /* process store request and store response */
1687 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001688 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001689 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001690
Willy Tarreauc93cd162014-05-13 15:54:22 +02001691 if (objt_server(s->target) && objt_server(s->target)->flags & SRV_F_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001692 stksess_free(s->store[i].table, s->store[i].ts);
1693 s->store[i].ts = NULL;
1694 continue;
1695 }
1696
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001697 ts = stktable_lookup(s->store[i].table, s->store[i].ts);
1698 if (ts) {
1699 /* the entry already existed, we can free ours */
Emeric Brun85e77c72010-09-23 18:16:52 +02001700 stktable_touch(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001701 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001702 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001703 else
Emeric Brun85e77c72010-09-23 18:16:52 +02001704 ts = stktable_store(s->store[i].table, s->store[i].ts, 1);
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001705
1706 s->store[i].ts = NULL;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001707 ptr = stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001708 stktable_data_cast(ptr, server_id) = objt_server(s->target)->puid;
Emeric Brun1d33b292010-01-04 15:47:17 +01001709 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001710 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001711
1712 rep->analysers &= ~an_bit;
1713 rep->analyse_exp = TICK_ETERNITY;
1714 return 1;
1715}
1716
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001717/* This macro is very specific to the function below. See the comments in
1718 * process_session() below to understand the logic and the tests.
1719 */
1720#define UPDATE_ANALYSERS(real, list, back, flag) { \
1721 list = (((list) & ~(flag)) | ~(back)) & (real); \
1722 back = real; \
1723 if (!(list)) \
1724 break; \
1725 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1726 continue; \
1727}
1728
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001729/* Processes the client, server, request and response jobs of a session task,
1730 * then puts it back to the wait queue in a clean state, or cleans up its
1731 * resources if it must be deleted. Returns in <next> the date the task wants
1732 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1733 * nothing too many times, the request and response buffers flags are monitored
1734 * and each function is called only if at least another function has changed at
1735 * least one flag it is interested in.
1736 */
Willy Tarreau26c25062009-03-08 09:38:41 +01001737struct task *process_session(struct task *t)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001738{
Willy Tarreau827aee92011-03-10 16:55:02 +01001739 struct server *srv;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001740 struct session *s = t->context;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001741 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001742 unsigned int rq_prod_last, rq_cons_last;
1743 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001744 unsigned int req_ana_back;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001745
1746 //DPRINTF(stderr, "%s:%d: cs=%d ss=%d(%d) rqf=0x%08x rpf=0x%08x\n", __FUNCTION__, __LINE__,
1747 // s->si[0].state, s->si[1].state, s->si[1].err_type, s->req->flags, s->rep->flags);
1748
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001749 /* this data may be no longer valid, clear it */
1750 memset(&s->txn.auth, 0, sizeof(s->txn.auth));
1751
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02001752 /* This flag must explicitly be set every time */
1753 s->req->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
1754 s->rep->flags &= ~(CF_READ_NOEXP|CF_WAKE_WRITE);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001755
1756 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001757 rqf_last = s->req->flags & ~CF_MASK_ANALYSER;
1758 rpf_last = s->rep->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001759
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001760 /* we don't want the stream interface functions to recursively wake us up */
1761 if (s->req->prod->owner == t)
1762 s->req->prod->flags |= SI_FL_DONT_WAKE;
1763 if (s->req->cons->owner == t)
1764 s->req->cons->flags |= SI_FL_DONT_WAKE;
1765
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001766 /* 1a: Check for low level timeouts if needed. We just set a flag on
1767 * stream interfaces when their timeouts have expired.
1768 */
1769 if (unlikely(t->state & TASK_WOKEN_TIMER)) {
1770 stream_int_check_timeouts(&s->si[0]);
1771 stream_int_check_timeouts(&s->si[1]);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001772
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001773 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001774 * for future reads or writes. Note: this will also concern upper layers
1775 * but we do not touch any other flag. We must be careful and correctly
1776 * detect state changes when calling them.
1777 */
1778
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001779 channel_check_timeouts(s->req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001780
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001781 if (unlikely((s->req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
Willy Tarreau14641402009-12-29 14:49:56 +01001782 s->req->cons->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001783 si_shutw(s->req->cons);
Willy Tarreau14641402009-12-29 14:49:56 +01001784 }
1785
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001786 if (unlikely((s->req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001787 if (s->req->prod->flags & SI_FL_NOHALF)
1788 s->req->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001789 si_shutr(s->req->prod);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001790 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001791
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001792 channel_check_timeouts(s->rep);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001793
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001794 if (unlikely((s->rep->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
Willy Tarreau14641402009-12-29 14:49:56 +01001795 s->rep->cons->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001796 si_shutw(s->rep->cons);
Willy Tarreau14641402009-12-29 14:49:56 +01001797 }
1798
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001799 if (unlikely((s->rep->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001800 if (s->rep->prod->flags & SI_FL_NOHALF)
1801 s->rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001802 si_shutr(s->rep->prod);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001803 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001804
1805 /* Once in a while we're woken up because the task expires. But
1806 * this does not necessarily mean that a timeout has been reached.
1807 * So let's not run a whole session processing if only an expiration
1808 * timeout needs to be refreshed.
1809 */
1810 if (!((s->req->flags | s->rep->flags) &
1811 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
1812 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
1813 !((s->si[0].flags | s->si[1].flags) & (SI_FL_EXP|SI_FL_ERR)) &&
1814 ((t->state & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER))
1815 goto update_exp_and_leave;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001816 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001817
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001818 /* below we may emit error messages so we have to ensure that we have
1819 * our buffers properly allocated.
1820 */
Willy Tarreaua24adf02014-11-27 01:11:56 +01001821 if (!session_alloc_work_buffer(s)) {
Willy Tarreau10fc09e2014-11-25 19:46:36 +01001822 /* No buffer available, we've been subscribed to the list of
1823 * buffer waiters, let's wait for our turn.
1824 */
1825 goto update_exp_and_leave;
1826 }
1827
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001828 /* 1b: check for low-level errors reported at the stream interface.
1829 * First we check if it's a retryable error (in which case we don't
1830 * want to tell the buffer). Otherwise we report the error one level
1831 * upper by setting flags into the buffers. Note that the side towards
1832 * the client cannot have connect (hence retryable) errors. Also, the
1833 * connection setup code must be able to deal with any type of abort.
1834 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001835 srv = objt_server(s->target);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001836 if (unlikely(s->si[0].flags & SI_FL_ERR)) {
1837 if (s->si[0].state == SI_ST_EST || s->si[0].state == SI_ST_DIS) {
Willy Tarreau73b013b2012-05-21 16:31:45 +02001838 si_shutr(&s->si[0]);
1839 si_shutw(&s->si[0]);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001840 stream_int_report_error(&s->si[0]);
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001841 if (!(s->req->analysers) && !(s->rep->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001842 s->be->be_counters.cli_aborts++;
1843 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001844 if (srv)
1845 srv->counters.cli_aborts++;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001846 if (!(s->flags & SN_ERR_MASK))
1847 s->flags |= SN_ERR_CLICL;
1848 if (!(s->flags & SN_FINST_MASK))
1849 s->flags |= SN_FINST_D;
1850 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001851 }
1852 }
1853
1854 if (unlikely(s->si[1].flags & SI_FL_ERR)) {
1855 if (s->si[1].state == SI_ST_EST || s->si[1].state == SI_ST_DIS) {
Willy Tarreau73b013b2012-05-21 16:31:45 +02001856 si_shutr(&s->si[1]);
1857 si_shutw(&s->si[1]);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001858 stream_int_report_error(&s->si[1]);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001859 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001860 if (srv)
1861 srv->counters.failed_resp++;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001862 if (!(s->req->analysers) && !(s->rep->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001863 s->be->be_counters.srv_aborts++;
1864 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001865 if (srv)
1866 srv->counters.srv_aborts++;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001867 if (!(s->flags & SN_ERR_MASK))
1868 s->flags |= SN_ERR_SRVCL;
1869 if (!(s->flags & SN_FINST_MASK))
1870 s->flags |= SN_FINST_D;
1871 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001872 }
1873 /* note: maybe we should process connection errors here ? */
1874 }
1875
1876 if (s->si[1].state == SI_ST_CON) {
1877 /* we were trying to establish a connection on the server side,
1878 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1879 */
1880 if (unlikely(!sess_update_st_con_tcp(s, &s->si[1])))
1881 sess_update_st_cer(s, &s->si[1]);
1882 else if (s->si[1].state == SI_ST_EST)
1883 sess_establish(s, &s->si[1]);
1884
1885 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1886 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1887 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1888 */
1889 }
1890
Willy Tarreau815a9b22010-07-27 17:15:12 +02001891 rq_prod_last = s->si[0].state;
1892 rq_cons_last = s->si[1].state;
1893 rp_cons_last = s->si[0].state;
1894 rp_prod_last = s->si[1].state;
1895
1896 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001897 /* Check for connection closure */
1898
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001899 DPRINTF(stderr,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001900 "[%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 +01001901 now_ms, __FUNCTION__, __LINE__,
1902 t,
1903 s, s->flags,
1904 s->req, s->rep,
1905 s->req->rex, s->rep->wex,
1906 s->req->flags, s->rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001907 s->req->buf->i, s->req->buf->o, s->rep->buf->i, s->rep->buf->o, s->rep->cons->state, s->req->cons->state,
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001908 s->rep->cons->err_type, s->req->cons->err_type,
Willy Tarreauee28de02010-06-01 09:51:00 +02001909 s->req->cons->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001910
1911 /* nothing special to be done on client side */
1912 if (unlikely(s->req->prod->state == SI_ST_DIS))
1913 s->req->prod->state = SI_ST_CLO;
1914
1915 /* When a server-side connection is released, we have to count it and
1916 * check for pending connections on this server.
1917 */
1918 if (unlikely(s->req->cons->state == SI_ST_DIS)) {
1919 s->req->cons->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001920 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001921 if (srv) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001922 if (s->flags & SN_CURR_SESS) {
1923 s->flags &= ~SN_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +01001924 srv->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001925 }
1926 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001927 if (may_dequeue_tasks(srv, s->be))
1928 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001929 }
1930 }
1931
1932 /*
1933 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1934 * at this point.
1935 */
1936
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001937 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001938 /* Analyse request */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001939 if (((s->req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1940 ((s->req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau815a9b22010-07-27 17:15:12 +02001941 s->si[0].state != rq_prod_last ||
1942 s->si[1].state != rq_cons_last) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001943 unsigned int flags = s->req->flags;
1944
1945 if (s->req->prod->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001946 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001947 unsigned int ana_list;
1948 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001949
Willy Tarreau90deb182010-01-07 00:20:41 +01001950 /* it's up to the analysers to stop new connections,
1951 * disable reading or closing. Note: if an analyser
1952 * disables any of these bits, it is responsible for
1953 * enabling them again when it disables itself, so
1954 * that other analysers are called in similar conditions.
1955 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001956 channel_auto_read(s->req);
1957 channel_auto_connect(s->req);
1958 channel_auto_close(s->req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001959
1960 /* We will call all analysers for which a bit is set in
1961 * s->req->analysers, following the bit order from LSB
1962 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001963 * the list when not needed. Any analyser may return 0
1964 * to break out of the loop, either because of missing
1965 * data to take a decision, or because it decides to
1966 * kill the session. We loop at least once through each
1967 * analyser, and we may loop again if other analysers
1968 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001969 *
1970 * We build a list of analysers to run. We evaluate all
1971 * of these analysers in the order of the lower bit to
1972 * the higher bit. This ordering is very important.
1973 * An analyser will often add/remove other analysers,
1974 * including itself. Any changes to itself have no effect
1975 * on the loop. If it removes any other analysers, we
1976 * want those analysers not to be called anymore during
1977 * this loop. If it adds an analyser that is located
1978 * after itself, we want it to be scheduled for being
1979 * processed during the loop. If it adds an analyser
1980 * which is located before it, we want it to switch to
1981 * it immediately, even if it has already been called
1982 * once but removed since.
1983 *
1984 * In order to achieve this, we compare the analyser
1985 * list after the call with a copy of it before the
1986 * call. The work list is fed with analyser bits that
1987 * appeared during the call. Then we compare previous
1988 * work list with the new one, and check the bits that
1989 * appeared. If the lowest of these bits is lower than
1990 * the current bit, it means we have enabled a previous
1991 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001992 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001993
1994 ana_list = ana_back = s->req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001995 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001996 /* Warning! ensure that analysers are always placed in ascending order! */
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001997
Willy Tarreaufb356202010-08-03 14:02:05 +02001998 if (ana_list & AN_REQ_INSPECT_FE) {
1999 if (!tcp_inspect_request(s, s->req, AN_REQ_INSPECT_FE))
Willy Tarreauedcf6682008-11-30 23:15:34 +01002000 break;
Willy Tarreaufb356202010-08-03 14:02:05 +02002001 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_INSPECT_FE);
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002002 }
Willy Tarreauedcf6682008-11-30 23:15:34 +01002003
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002004 if (ana_list & AN_REQ_WAIT_HTTP) {
Willy Tarreau3a816292009-07-07 10:55:49 +02002005 if (!http_wait_for_request(s, s->req, AN_REQ_WAIT_HTTP))
Willy Tarreaud787e662009-07-07 10:14:51 +02002006 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002007 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_WAIT_HTTP);
Willy Tarreaud787e662009-07-07 10:14:51 +02002008 }
2009
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002010 if (ana_list & AN_REQ_HTTP_PROCESS_FE) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002011 if (!http_process_req_common(s, s->req, AN_REQ_HTTP_PROCESS_FE, s->fe))
2012 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002013 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002014 }
2015
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002016 if (ana_list & AN_REQ_SWITCHING_RULES) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002017 if (!process_switching_rules(s, s->req, AN_REQ_SWITCHING_RULES))
2018 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002019 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002020 }
2021
Willy Tarreaufb356202010-08-03 14:02:05 +02002022 if (ana_list & AN_REQ_INSPECT_BE) {
2023 if (!tcp_inspect_request(s, s->req, AN_REQ_INSPECT_BE))
2024 break;
2025 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_INSPECT_BE);
2026 }
2027
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002028 if (ana_list & AN_REQ_HTTP_PROCESS_BE) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002029 if (!http_process_req_common(s, s->req, AN_REQ_HTTP_PROCESS_BE, s->be))
2030 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002031 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002032 }
2033
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002034 if (ana_list & AN_REQ_HTTP_TARPIT) {
Willy Tarreau3a816292009-07-07 10:55:49 +02002035 if (!http_process_tarpit(s, s->req, AN_REQ_HTTP_TARPIT))
Willy Tarreau60b85b02008-11-30 23:28:40 +01002036 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002037 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002038 }
Willy Tarreau60b85b02008-11-30 23:28:40 +01002039
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002040 if (ana_list & AN_REQ_SRV_RULES) {
2041 if (!process_server_rules(s, s->req, AN_REQ_SRV_RULES))
2042 break;
2043 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_SRV_RULES);
2044 }
2045
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002046 if (ana_list & AN_REQ_HTTP_INNER) {
Willy Tarreauc465fd72009-08-31 00:17:18 +02002047 if (!http_process_request(s, s->req, AN_REQ_HTTP_INNER))
2048 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002049 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_INNER);
Willy Tarreauc465fd72009-08-31 00:17:18 +02002050 }
2051
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002052 if (ana_list & AN_REQ_HTTP_BODY) {
Willy Tarreau5a8f9472014-04-10 11:16:06 +02002053 if (!http_wait_for_request_body(s, s->req, AN_REQ_HTTP_BODY))
Willy Tarreaud34af782008-11-30 23:36:37 +01002054 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002055 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_BODY);
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02002056 }
Emeric Brun647caf12009-06-30 17:57:00 +02002057
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002058 if (ana_list & AN_REQ_PRST_RDP_COOKIE) {
Emeric Brun647caf12009-06-30 17:57:00 +02002059 if (!tcp_persist_rdp_cookie(s, s->req, AN_REQ_PRST_RDP_COOKIE))
2060 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002061 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
Emeric Brun647caf12009-06-30 17:57:00 +02002062 }
Willy Tarreaud98cf932009-12-27 22:54:55 +01002063
Emeric Brun1d33b292010-01-04 15:47:17 +01002064 if (ana_list & AN_REQ_STICKING_RULES) {
2065 if (!process_sticking_rules(s, s->req, AN_REQ_STICKING_RULES))
2066 break;
2067 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_STICKING_RULES);
2068 }
2069
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002070 if (ana_list & AN_REQ_HTTP_XFER_BODY) {
Willy Tarreaud98cf932009-12-27 22:54:55 +01002071 if (!http_request_forward_body(s, s->req, AN_REQ_HTTP_XFER_BODY))
2072 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002073 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Willy Tarreaud98cf932009-12-27 22:54:55 +01002074 }
Willy Tarreaue34070e2010-01-08 00:32:27 +01002075 break;
2076 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002077 }
Willy Tarreau84455332009-03-15 22:34:05 +01002078
Willy Tarreau815a9b22010-07-27 17:15:12 +02002079 rq_prod_last = s->si[0].state;
2080 rq_cons_last = s->si[1].state;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002081 s->req->flags &= ~CF_WAKE_ONCE;
Willy Tarreau815a9b22010-07-27 17:15:12 +02002082 rqf_last = s->req->flags;
2083
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002084 if ((s->req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002085 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002086 }
2087
Willy Tarreau576507f2010-01-07 00:09:04 +01002088 /* we'll monitor the request analysers while parsing the response,
2089 * because some response analysers may indirectly enable new request
2090 * analysers (eg: HTTP keep-alive).
2091 */
2092 req_ana_back = s->req->analysers;
2093
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002094 resync_response:
2095 /* Analyse response */
2096
Willy Tarreaub31c9712012-11-11 23:05:39 +01002097 if (((s->rep->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002098 (s->rep->flags ^ rpf_last) & CF_MASK_STATIC ||
2099 s->si[0].state != rp_cons_last ||
2100 s->si[1].state != rp_prod_last) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002101 unsigned int flags = s->rep->flags;
2102
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002103 if ((s->rep->flags & CF_MASK_ANALYSER) &&
Willy Tarreau0499e352010-12-17 07:13:42 +01002104 (s->rep->analysers & AN_REQ_WAIT_HTTP)) {
2105 /* Due to HTTP pipelining, the HTTP request analyser might be waiting
2106 * for some free space in the response buffer, so we might need to call
2107 * it when something changes in the response buffer, but still we pass
2108 * it the request buffer. Note that the SI state might very well still
2109 * be zero due to us returning a flow of redirects!
2110 */
2111 s->rep->analysers &= ~AN_REQ_WAIT_HTTP;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002112 s->req->flags |= CF_WAKE_ONCE;
Willy Tarreau0499e352010-12-17 07:13:42 +01002113 }
2114
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002115 if (s->rep->prod->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01002116 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002117 unsigned int ana_list;
2118 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002119
Willy Tarreau90deb182010-01-07 00:20:41 +01002120 /* it's up to the analysers to stop disable reading or
2121 * closing. Note: if an analyser disables any of these
2122 * bits, it is responsible for enabling them again when
2123 * it disables itself, so that other analysers are called
2124 * in similar conditions.
2125 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002126 channel_auto_read(s->rep);
2127 channel_auto_close(s->rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002128
2129 /* We will call all analysers for which a bit is set in
2130 * s->rep->analysers, following the bit order from LSB
2131 * to MSB. The analysers must remove themselves from
2132 * the list when not needed. Any analyser may return 0
2133 * to break out of the loop, either because of missing
2134 * data to take a decision, or because it decides to
2135 * kill the session. We loop at least once through each
2136 * analyser, and we may loop again if other analysers
2137 * are added in the middle.
2138 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002139
2140 ana_list = ana_back = s->rep->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01002141 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002142 /* Warning! ensure that analysers are always placed in ascending order! */
2143
Emeric Brun97679e72010-09-23 17:56:44 +02002144 if (ana_list & AN_RES_INSPECT) {
2145 if (!tcp_inspect_response(s, s->rep, AN_RES_INSPECT))
2146 break;
2147 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_INSPECT);
2148 }
2149
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002150 if (ana_list & AN_RES_WAIT_HTTP) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002151 if (!http_wait_for_response(s, s->rep, AN_RES_WAIT_HTTP))
2152 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002153 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_WAIT_HTTP);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002154 }
2155
Emeric Brun1d33b292010-01-04 15:47:17 +01002156 if (ana_list & AN_RES_STORE_RULES) {
2157 if (!process_store_rules(s, s->rep, AN_RES_STORE_RULES))
2158 break;
2159 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_STORE_RULES);
2160 }
2161
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002162 if (ana_list & AN_RES_HTTP_PROCESS_BE) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002163 if (!http_process_res_common(s, s->rep, AN_RES_HTTP_PROCESS_BE, s->be))
2164 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002165 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_HTTP_PROCESS_BE);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02002166 }
Willy Tarreaud98cf932009-12-27 22:54:55 +01002167
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002168 if (ana_list & AN_RES_HTTP_XFER_BODY) {
Willy Tarreaud98cf932009-12-27 22:54:55 +01002169 if (!http_response_forward_body(s, s->rep, AN_RES_HTTP_XFER_BODY))
2170 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01002171 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Willy Tarreaud98cf932009-12-27 22:54:55 +01002172 }
Willy Tarreaue34070e2010-01-08 00:32:27 +01002173 break;
2174 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002175 }
2176
Willy Tarreau815a9b22010-07-27 17:15:12 +02002177 rp_cons_last = s->si[0].state;
2178 rp_prod_last = s->si[1].state;
2179 rpf_last = s->rep->flags;
2180
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002181 if ((s->rep->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002182 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002183 }
2184
Willy Tarreau576507f2010-01-07 00:09:04 +01002185 /* maybe someone has added some request analysers, so we must check and loop */
2186 if (s->req->analysers & ~req_ana_back)
2187 goto resync_request;
2188
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002189 if ((s->req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01002190 goto resync_request;
2191
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002192 /* FIXME: here we should call protocol handlers which rely on
2193 * both buffers.
2194 */
2195
2196
2197 /*
Willy Tarreauae526782010-03-04 20:34:23 +01002198 * Now we propagate unhandled errors to the session. Normally
2199 * we're just in a data phase here since it means we have not
2200 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002201 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002202 srv = objt_server(s->target);
Willy Tarreau2f976e12010-11-11 14:28:47 +01002203 if (unlikely(!(s->flags & SN_ERR_MASK))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002204 if (s->req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002205 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau84455332009-03-15 22:34:05 +01002206 s->req->analysers = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002207 if (s->req->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002208 s->be->be_counters.cli_aborts++;
2209 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002210 if (srv)
2211 srv->counters.cli_aborts++;
Willy Tarreau84455332009-03-15 22:34:05 +01002212 s->flags |= SN_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002213 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002214 else if (s->req->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002215 s->be->be_counters.cli_aborts++;
2216 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002217 if (srv)
2218 srv->counters.cli_aborts++;
Willy Tarreau84455332009-03-15 22:34:05 +01002219 s->flags |= SN_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002220 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002221 else if (s->req->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002222 s->be->be_counters.srv_aborts++;
2223 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002224 if (srv)
2225 srv->counters.srv_aborts++;
Willy Tarreau84455332009-03-15 22:34:05 +01002226 s->flags |= SN_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002227 }
2228 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002229 s->be->be_counters.srv_aborts++;
2230 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002231 if (srv)
2232 srv->counters.srv_aborts++;
Willy Tarreau84455332009-03-15 22:34:05 +01002233 s->flags |= SN_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002234 }
Willy Tarreau84455332009-03-15 22:34:05 +01002235 sess_set_term_flags(s);
2236 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002237 else if (s->rep->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002238 /* Report it if the server got an error or a read timeout expired */
2239 s->rep->analysers = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002240 if (s->rep->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002241 s->be->be_counters.srv_aborts++;
2242 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002243 if (srv)
2244 srv->counters.srv_aborts++;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002245 s->flags |= SN_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002246 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002247 else if (s->rep->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002248 s->be->be_counters.srv_aborts++;
2249 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002250 if (srv)
2251 srv->counters.srv_aborts++;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002252 s->flags |= SN_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002253 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002254 else if (s->rep->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002255 s->be->be_counters.cli_aborts++;
2256 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002257 if (srv)
2258 srv->counters.cli_aborts++;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002259 s->flags |= SN_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002260 }
2261 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002262 s->be->be_counters.cli_aborts++;
2263 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002264 if (srv)
2265 srv->counters.cli_aborts++;
Willy Tarreauae526782010-03-04 20:34:23 +01002266 s->flags |= SN_ERR_CLITO;
2267 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002268 sess_set_term_flags(s);
2269 }
Willy Tarreau84455332009-03-15 22:34:05 +01002270 }
2271
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002272 /*
2273 * Here we take care of forwarding unhandled data. This also includes
2274 * connection establishments and shutdown requests.
2275 */
2276
2277
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002278 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002279 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002280 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002281 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002282 */
Willy Tarreau2b028dd2013-12-31 23:56:46 +01002283 if (unlikely(!s->req->analysers &&
Willy Tarreaub31c9712012-11-11 23:05:39 +01002284 !(s->req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau31971e52009-09-20 12:07:52 +02002285 (s->req->prod->state >= SI_ST_EST) &&
Willy Tarreau2b028dd2013-12-31 23:56:46 +01002286 (s->req->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002287 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002288 * attached to it. If any data are left in, we'll permit them to
2289 * move.
2290 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002291 channel_auto_read(s->req);
2292 channel_auto_connect(s->req);
2293 channel_auto_close(s->req);
Willy Tarreau9b28e032012-10-12 23:49:43 +02002294 buffer_flush(s->req->buf);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002295
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002296 /* We'll let data flow between the producer (if still connected)
2297 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002298 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002299 if (!(s->req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002300 channel_forward(s->req, CHN_INFINITE_FORWARD);
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002301 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002302
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002303 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002304 if (!(s->req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002305 s->req->to_forward &&
2306 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002307 (objt_conn(s->si[0].end) && __objt_conn(s->si[0].end)->xprt && __objt_conn(s->si[0].end)->xprt->rcv_pipe) &&
2308 (objt_conn(s->si[1].end) && __objt_conn(s->si[1].end)->xprt && __objt_conn(s->si[1].end)->xprt->snd_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002309 (pipes_used < global.maxpipes) &&
2310 (((s->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2311 (((s->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002312 (s->req->flags & CF_STREAMER_FAST)))) {
2313 s->req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002314 }
2315
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002316 /* reflect what the L7 analysers have seen last */
2317 rqf_last = s->req->flags;
2318
2319 /*
2320 * Now forward all shutdown requests between both sides of the buffer
2321 */
2322
Willy Tarreau520d95e2009-09-19 21:04:57 +02002323 /* first, let's check if the request buffer needs to shutdown(write), which may
2324 * happen either because the input is closed or because we want to force a close
Willy Tarreau05cdd962014-05-10 14:30:07 +02002325 * once the server has begun to respond. If a half-closed timeout is set, we adjust
2326 * the other side's timeout as well.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002327 */
Willy Tarreaub31c9712012-11-11 23:05:39 +01002328 if (unlikely((s->req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002329 (CF_AUTO_CLOSE|CF_SHUTR))) {
2330 channel_shutw_now(s->req);
2331 if (tick_isset(s->fe->timeout.clientfin)) {
2332 s->rep->wto = s->fe->timeout.clientfin;
2333 s->rep->wex = tick_add(now_ms, s->rep->wto);
2334 }
2335 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002336
2337 /* shutdown(write) pending */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002338 if (unlikely((s->req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002339 channel_is_empty(s->req))) {
2340 if (s->req->flags & CF_READ_ERROR)
2341 s->req->cons->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02002342 si_shutw(s->req->cons);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002343 if (tick_isset(s->be->timeout.serverfin)) {
2344 s->rep->rto = s->be->timeout.serverfin;
2345 s->rep->rex = tick_add(now_ms, s->rep->rto);
2346 }
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002347 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002348
2349 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002350 if (unlikely((s->req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
Willy Tarreau3dbc6942008-12-07 13:05:04 +01002351 !s->req->analysers))
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002352 channel_shutr_now(s->req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002353
2354 /* shutdown(read) pending */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002355 if (unlikely((s->req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002356 if (s->req->prod->flags & SI_FL_NOHALF)
2357 s->req->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02002358 si_shutr(s->req->prod);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002359 if (tick_isset(s->fe->timeout.clientfin)) {
2360 s->rep->wto = s->fe->timeout.clientfin;
2361 s->rep->wex = tick_add(now_ms, s->rep->wto);
2362 }
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002363 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002364
Willy Tarreau520d95e2009-09-19 21:04:57 +02002365 /* it's possible that an upper layer has requested a connection setup or abort.
2366 * There are 2 situations where we decide to establish a new connection :
2367 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002368 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002369 */
2370 if (s->req->cons->state == SI_ST_INI) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002371 if (!(s->req->flags & CF_SHUTW)) {
2372 if ((s->req->flags & CF_AUTO_CONNECT) || !channel_is_empty(s->req)) {
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002373 /* If we have an appctx, there is no connect method, so we
2374 * immediately switch to the connected state, otherwise we
2375 * perform a connection request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002376 */
Willy Tarreau85e7d002010-05-31 11:57:51 +02002377 s->req->cons->state = SI_ST_REQ; /* new connection requested */
Willy Tarreau070ceb62010-06-01 10:36:43 +02002378 s->req->cons->conn_retries = s->be->conn_retries;
Willy Tarreau520d95e2009-09-19 21:04:57 +02002379 }
Willy Tarreau73201222009-08-16 18:27:24 +02002380 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002381 else {
Willy Tarreau92795622009-03-06 12:51:23 +01002382 s->req->cons->state = SI_ST_CLO; /* shutw+ini = abort */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002383 channel_shutw_now(s->req); /* fix buffer flags upon abort */
2384 channel_shutr_now(s->rep);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002385 }
Willy Tarreau92795622009-03-06 12:51:23 +01002386 }
2387
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002388
2389 /* we may have a pending connection request, or a connection waiting
2390 * for completion.
2391 */
2392 if (s->si[1].state >= SI_ST_REQ && s->si[1].state < SI_ST_CON) {
2393 do {
2394 /* nb: step 1 might switch from QUE to ASS, but we first want
2395 * to give a chance to step 2 to perform a redirect if needed.
2396 */
2397 if (s->si[1].state != SI_ST_REQ)
2398 sess_update_stream_int(s, &s->si[1]);
Willy Tarreaub44c8732013-12-31 23:16:50 +01002399 if (s->si[1].state == SI_ST_REQ)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002400 sess_prepare_conn_req(s, &s->si[1]);
2401
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +01002402 /* applets directly go to the ESTABLISHED state. Similarly,
2403 * servers experience the same fate when their connection
2404 * is reused.
2405 */
Willy Tarreaub44c8732013-12-31 23:16:50 +01002406 if (unlikely(s->si[1].state == SI_ST_EST))
2407 sess_establish(s, &s->si[1]);
Willy Tarreaufac4bd12013-11-30 09:21:49 +01002408
Willy Tarreaub44c8732013-12-31 23:16:50 +01002409 /* Now we can add the server name to a header (if requested) */
2410 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
2411 if ((s->si[1].state >= SI_ST_CON) &&
2412 (s->be->server_id_hdr_name != NULL) &&
2413 (s->be->mode == PR_MODE_HTTP) &&
2414 objt_server(s->target)) {
2415 http_send_name_header(&s->txn, s->be, objt_server(s->target)->id);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002416 }
2417
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002418 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01002419 if (s->si[1].state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SN_REDIRECTABLE))
Willy Tarreau71241ab2012-12-27 11:30:54 +01002420 http_perform_server_redirect(s, &s->si[1]);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002421 } while (s->si[1].state == SI_ST_ASS);
2422 }
2423
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002424 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002425 if (s->req->prod->state == SI_ST_DIS || s->req->cons->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002426 goto resync_stream_interface;
2427
Willy Tarreau815a9b22010-07-27 17:15:12 +02002428 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002429 if ((s->req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002430 goto resync_request;
2431
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002432 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002433
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002434 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002435 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002436 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002437 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002438 */
Willy Tarreau2b028dd2013-12-31 23:56:46 +01002439 if (unlikely(!s->rep->analysers &&
Willy Tarreaub31c9712012-11-11 23:05:39 +01002440 !(s->rep->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau31971e52009-09-20 12:07:52 +02002441 (s->rep->prod->state >= SI_ST_EST) &&
Willy Tarreau2b028dd2013-12-31 23:56:46 +01002442 (s->rep->to_forward != CHN_INFINITE_FORWARD))) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002443 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002444 * attached to it. If any data are left in, we'll permit them to
2445 * move.
2446 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002447 channel_auto_read(s->rep);
2448 channel_auto_close(s->rep);
Willy Tarreau9b28e032012-10-12 23:49:43 +02002449 buffer_flush(s->rep->buf);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002450
2451 /* We'll let data flow between the producer (if still connected)
2452 * to the consumer.
2453 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002454 if (!(s->rep->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002455 channel_forward(s->rep, CHN_INFINITE_FORWARD);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002456
2457 /* if we have no analyser anymore in any direction and have a
Willy Tarreau05cdd962014-05-10 14:30:07 +02002458 * tunnel timeout set, use it now. Note that we must respect
2459 * the half-closed timeouts as well.
Willy Tarreauce887fd2012-05-12 12:50:00 +02002460 */
2461 if (!s->req->analysers && s->be->timeout.tunnel) {
2462 s->req->rto = s->req->wto = s->rep->rto = s->rep->wto =
2463 s->be->timeout.tunnel;
Willy Tarreau05cdd962014-05-10 14:30:07 +02002464
2465 if ((s->req->flags & CF_SHUTR) && tick_isset(s->fe->timeout.clientfin))
2466 s->rep->wto = s->fe->timeout.clientfin;
2467 if ((s->req->flags & CF_SHUTW) && tick_isset(s->be->timeout.serverfin))
2468 s->rep->rto = s->be->timeout.serverfin;
2469 if ((s->rep->flags & CF_SHUTR) && tick_isset(s->be->timeout.serverfin))
2470 s->req->wto = s->be->timeout.serverfin;
2471 if ((s->rep->flags & CF_SHUTW) && tick_isset(s->fe->timeout.clientfin))
2472 s->req->rto = s->fe->timeout.clientfin;
2473
2474 s->req->rex = tick_add(now_ms, s->req->rto);
2475 s->req->wex = tick_add(now_ms, s->req->wto);
2476 s->rep->rex = tick_add(now_ms, s->rep->rto);
2477 s->rep->wex = tick_add(now_ms, s->rep->wto);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002478 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002479 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002480
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002481 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002482 if (!(s->rep->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002483 s->rep->to_forward &&
2484 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002485 (objt_conn(s->si[0].end) && __objt_conn(s->si[0].end)->xprt && __objt_conn(s->si[0].end)->xprt->snd_pipe) &&
2486 (objt_conn(s->si[1].end) && __objt_conn(s->si[1].end)->xprt && __objt_conn(s->si[1].end)->xprt->rcv_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002487 (pipes_used < global.maxpipes) &&
2488 (((s->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2489 (((s->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002490 (s->rep->flags & CF_STREAMER_FAST)))) {
2491 s->rep->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002492 }
2493
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002494 /* reflect what the L7 analysers have seen last */
2495 rpf_last = s->rep->flags;
2496
2497 /*
2498 * Now forward all shutdown requests between both sides of the buffer
2499 */
2500
2501 /*
2502 * FIXME: this is probably where we should produce error responses.
2503 */
2504
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002505 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreaub31c9712012-11-11 23:05:39 +01002506 if (unlikely((s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau05cdd962014-05-10 14:30:07 +02002507 (CF_AUTO_CLOSE|CF_SHUTR))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002508 channel_shutw_now(s->rep);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002509 if (tick_isset(s->be->timeout.serverfin)) {
2510 s->req->wto = s->be->timeout.serverfin;
2511 s->req->wex = tick_add(now_ms, s->req->wto);
2512 }
2513 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002514
2515 /* shutdown(write) pending */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002516 if (unlikely((s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
Willy Tarreau05cdd962014-05-10 14:30:07 +02002517 channel_is_empty(s->rep))) {
Willy Tarreau73b013b2012-05-21 16:31:45 +02002518 si_shutw(s->rep->cons);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002519 if (tick_isset(s->fe->timeout.clientfin)) {
2520 s->req->rto = s->fe->timeout.clientfin;
2521 s->req->rex = tick_add(now_ms, s->req->rto);
2522 }
2523 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002524
2525 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002526 if (unlikely((s->rep->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
Willy Tarreau3dbc6942008-12-07 13:05:04 +01002527 !s->rep->analysers)
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002528 channel_shutr_now(s->rep);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002529
2530 /* shutdown(read) pending */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002531 if (unlikely((s->rep->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002532 if (s->rep->prod->flags & SI_FL_NOHALF)
2533 s->rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02002534 si_shutr(s->rep->prod);
Willy Tarreau05cdd962014-05-10 14:30:07 +02002535 if (tick_isset(s->be->timeout.serverfin)) {
2536 s->req->wto = s->be->timeout.serverfin;
2537 s->req->wex = tick_add(now_ms, s->req->wto);
2538 }
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002539 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002540
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002541 if (s->req->prod->state == SI_ST_DIS || s->req->cons->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002542 goto resync_stream_interface;
2543
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002544 if (s->req->flags != rqf_last)
2545 goto resync_request;
2546
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002547 if ((s->rep->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002548 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002549
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002550 /* we're interested in getting wakeups again */
2551 s->req->prod->flags &= ~SI_FL_DONT_WAKE;
2552 s->req->cons->flags &= ~SI_FL_DONT_WAKE;
2553
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002554 /* This is needed only when debugging is enabled, to indicate
2555 * client-side or server-side close. Please note that in the unlikely
2556 * event where both sides would close at once, the sequence is reported
2557 * on the server side first.
2558 */
2559 if (unlikely((global.mode & MODE_DEBUG) &&
2560 (!(global.mode & MODE_QUIET) ||
2561 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002562 if (s->si[1].state == SI_ST_CLO &&
2563 s->si[1].prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002564 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002565 s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002566 objt_conn(s->si[0].end) ? (unsigned short)objt_conn(s->si[0].end)->t.sock.fd : -1,
2567 objt_conn(s->si[1].end) ? (unsigned short)objt_conn(s->si[1].end)->t.sock.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002568 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002569 }
2570
2571 if (s->si[0].state == SI_ST_CLO &&
2572 s->si[0].prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002573 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002574 s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002575 objt_conn(s->si[0].end) ? (unsigned short)objt_conn(s->si[0].end)->t.sock.fd : -1,
2576 objt_conn(s->si[1].end) ? (unsigned short)objt_conn(s->si[1].end)->t.sock.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002577 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002578 }
2579 }
2580
2581 if (likely((s->rep->cons->state != SI_ST_CLO) ||
2582 (s->req->cons->state > SI_ST_INI && s->req->cons->state < SI_ST_CLO))) {
2583
2584 if ((s->fe->options & PR_O_CONTSTATS) && (s->flags & SN_BE_ASSIGNED))
2585 session_process_counters(s);
2586
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002587 if (s->rep->cons->state == SI_ST_EST && obj_type(s->rep->cons->end) != OBJ_TYPE_APPCTX)
Willy Tarreau73b013b2012-05-21 16:31:45 +02002588 si_update(s->rep->cons);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002589
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002590 if (s->req->cons->state == SI_ST_EST && obj_type(s->req->cons->end) != OBJ_TYPE_APPCTX)
Willy Tarreau73b013b2012-05-21 16:31:45 +02002591 si_update(s->req->cons);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002592
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002593 s->req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2594 s->rep->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002595 s->si[0].prev_state = s->si[0].state;
2596 s->si[1].prev_state = s->si[1].state;
Willy Tarreaub0ef7352008-12-14 13:26:20 +01002597 s->si[0].flags &= ~(SI_FL_ERR|SI_FL_EXP);
2598 s->si[1].flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002599
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02002600 /* Trick: if a request is being waiting for the server to respond,
2601 * and if we know the server can timeout, we don't want the timeout
2602 * to expire on the client side first, but we're still interested
2603 * in passing data from the client to the server (eg: POST). Thus,
2604 * we can cancel the client's request timeout if the server's
2605 * request timeout is set and the server has not yet sent a response.
2606 */
2607
2608 if ((s->rep->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
2609 (tick_isset(s->req->wex) || tick_isset(s->rep->rex))) {
2610 s->req->flags |= CF_READ_NOEXP;
2611 s->req->rex = TICK_ETERNITY;
2612 }
2613
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002614 /* When any of the stream interfaces is attached to an applet,
2615 * we have to call it here. Note that this one may wake the
2616 * task up again. If at least one applet was called, the current
2617 * task might have been woken up, in which case we don't want it
2618 * to be requeued to the wait queue but rather to the run queue
2619 * to run ASAP. The bitwise "or" in the condition ensures that
2620 * both functions are always called and that we wake up if at
2621 * least one did something.
Willy Tarreau1accfc02009-09-05 20:57:35 +02002622 */
Willy Tarreaucf644ed2013-09-29 17:19:56 +02002623 if ((si_applet_call(s->req->cons) | si_applet_call(s->rep->cons)) != 0) {
Willy Tarreau1accfc02009-09-05 20:57:35 +02002624 if (task_in_rq(t)) {
Willy Tarreau1accfc02009-09-05 20:57:35 +02002625 t->expire = TICK_ETERNITY;
Willy Tarreau10fc09e2014-11-25 19:46:36 +01002626 session_release_buffers(s);
Willy Tarreau1accfc02009-09-05 20:57:35 +02002627 return t;
2628 }
2629 }
2630
Willy Tarreau798f4322012-11-08 14:49:17 +01002631 update_exp_and_leave:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002632 t->expire = tick_first(tick_first(s->req->rex, s->req->wex),
2633 tick_first(s->rep->rex, s->rep->wex));
2634 if (s->req->analysers)
2635 t->expire = tick_first(t->expire, s->req->analyse_exp);
2636
2637 if (s->si[0].exp)
2638 t->expire = tick_first(t->expire, s->si[0].exp);
2639
2640 if (s->si[1].exp)
2641 t->expire = tick_first(t->expire, s->si[1].exp);
2642
2643#ifdef DEBUG_FULL
Willy Tarreau127334e2009-03-28 10:47:26 +01002644 fprintf(stderr,
2645 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2646 " rep->rex=%u rep->wex=%u, si[0].exp=%u, si[1].exp=%u, cs=%d, ss=%d\n",
2647 now_ms, t->expire, s->req->rex, s->req->wex, s->req->analyse_exp,
2648 s->rep->rex, s->rep->wex, s->si[0].exp, s->si[1].exp, s->si[0].state, s->si[1].state);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002649#endif
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002650
2651#ifdef DEBUG_DEV
2652 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002653 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002654 ABORT_NOW();
2655#endif
Willy Tarreau10fc09e2014-11-25 19:46:36 +01002656 session_release_buffers(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002657 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002658 }
2659
2660 s->fe->feconn--;
2661 if (s->flags & SN_BE_ASSIGNED)
2662 s->be->beconn--;
Willy Tarreauaf7ad002010-08-31 15:39:26 +02002663 jobs--;
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002664 if (s->listener) {
2665 if (!(s->listener->options & LI_O_UNLIMITED))
2666 actconn--;
2667 s->listener->nbconn--;
2668 if (s->listener->state == LI_FULL)
2669 resume_listener(s->listener);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002670
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002671 /* Dequeues all of the listeners waiting for a resource */
2672 if (!LIST_ISEMPTY(&global_listener_queue))
2673 dequeue_all_listeners(&global_listener_queue);
Willy Tarreau08ceb102011-07-24 22:58:00 +02002674
Thierry FOURNIERa47a94f2014-03-20 15:42:53 +01002675 if (!LIST_ISEMPTY(&s->fe->listener_queue) &&
2676 (!s->fe->fe_sps_lim || freq_ctr_remain(&s->fe->fe_sess_per_sec, s->fe->fe_sps_lim, 0) > 0))
2677 dequeue_all_listeners(&s->fe->listener_queue);
2678 }
Willy Tarreau07687c12011-07-24 23:55:06 +02002679
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002680 if (unlikely((global.mode & MODE_DEBUG) &&
2681 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002682 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002683 s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002684 objt_conn(s->si[0].end) ? (unsigned short)objt_conn(s->si[0].end)->t.sock.fd : -1,
2685 objt_conn(s->si[1].end) ? (unsigned short)objt_conn(s->si[1].end)->t.sock.fd : -1);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002686 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002687 }
2688
2689 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
2690 session_process_counters(s);
2691
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002692 if (s->txn.status) {
2693 int n;
2694
2695 n = s->txn.status / 100;
2696 if (n < 1 || n > 5)
2697 n = 0;
2698
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002699 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002700 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +01002701 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002702 s->fe->fe_counters.p.http.comp_rsp++;
2703 }
Willy Tarreau24657792010-02-26 10:30:28 +01002704 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002705 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002706 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002707 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +01002708 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002709 s->be->be_counters.p.http.comp_rsp++;
2710 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002711 }
2712
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002713 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +01002714 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002715 !(s->flags & SN_MONITOR) &&
2716 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002717 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002718 }
2719
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002720 /* update time stats for this session */
2721 session_update_time_stats(s);
2722
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002723 /* the task MUST not be in the run queue anymore */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002724 session_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002725 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002726 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002727 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002728}
2729
Willy Tarreau4bfc5802014-06-17 12:19:18 +02002730/* Update the session's backend and server time stats */
2731void session_update_time_stats(struct session *s)
2732{
2733 int t_request;
2734 int t_queue;
2735 int t_connect;
2736 int t_data;
2737 int t_close;
2738 struct server *srv;
2739
2740 t_request = 0;
2741 t_queue = s->logs.t_queue;
2742 t_connect = s->logs.t_connect;
2743 t_close = s->logs.t_close;
2744 t_data = s->logs.t_data;
2745
2746 if (s->be->mode != PR_MODE_HTTP)
2747 t_data = t_connect;
2748
2749 if (t_connect < 0 || t_data < 0)
2750 return;
2751
2752 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
2753 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
2754
2755 t_data -= t_connect;
2756 t_connect -= t_queue;
2757 t_queue -= t_request;
2758
2759 srv = objt_server(s->target);
2760 if (srv) {
2761 swrate_add(&srv->counters.q_time, TIME_STATS_SAMPLES, t_queue);
2762 swrate_add(&srv->counters.c_time, TIME_STATS_SAMPLES, t_connect);
2763 swrate_add(&srv->counters.d_time, TIME_STATS_SAMPLES, t_data);
2764 swrate_add(&srv->counters.t_time, TIME_STATS_SAMPLES, t_close);
2765 }
2766 swrate_add(&s->be->be_counters.q_time, TIME_STATS_SAMPLES, t_queue);
2767 swrate_add(&s->be->be_counters.c_time, TIME_STATS_SAMPLES, t_connect);
2768 swrate_add(&s->be->be_counters.d_time, TIME_STATS_SAMPLES, t_data);
2769 swrate_add(&s->be->be_counters.t_time, TIME_STATS_SAMPLES, t_close);
2770}
2771
Willy Tarreau7c669d72008-06-20 15:04:11 +02002772/*
2773 * This function adjusts sess->srv_conn and maintains the previous and new
2774 * server's served session counts. Setting newsrv to NULL is enough to release
2775 * current connection slot. This function also notifies any LB algo which might
2776 * expect to be informed about any change in the number of active sessions on a
2777 * server.
2778 */
2779void sess_change_server(struct session *sess, struct server *newsrv)
2780{
2781 if (sess->srv_conn == newsrv)
2782 return;
2783
2784 if (sess->srv_conn) {
2785 sess->srv_conn->served--;
2786 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2787 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Simon Hormanaf514952011-06-21 14:34:57 +09002788 session_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002789 }
2790
2791 if (newsrv) {
2792 newsrv->served++;
2793 if (newsrv->proxy->lbprm.server_take_conn)
2794 newsrv->proxy->lbprm.server_take_conn(newsrv);
Simon Hormanaf514952011-06-21 14:34:57 +09002795 session_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002796 }
2797}
2798
Willy Tarreau84455332009-03-15 22:34:05 +01002799/* Handle server-side errors for default protocols. It is called whenever a a
2800 * connection setup is aborted or a request is aborted in queue. It sets the
2801 * session termination flags so that the caller does not have to worry about
2802 * them. It's installed as ->srv_error for the server-side stream_interface.
2803 */
2804void default_srv_error(struct session *s, struct stream_interface *si)
2805{
2806 int err_type = si->err_type;
2807 int err = 0, fin = 0;
2808
2809 if (err_type & SI_ET_QUEUE_ABRT) {
2810 err = SN_ERR_CLICL;
2811 fin = SN_FINST_Q;
2812 }
2813 else if (err_type & SI_ET_CONN_ABRT) {
2814 err = SN_ERR_CLICL;
2815 fin = SN_FINST_C;
2816 }
2817 else if (err_type & SI_ET_QUEUE_TO) {
2818 err = SN_ERR_SRVTO;
2819 fin = SN_FINST_Q;
2820 }
2821 else if (err_type & SI_ET_QUEUE_ERR) {
2822 err = SN_ERR_SRVCL;
2823 fin = SN_FINST_Q;
2824 }
2825 else if (err_type & SI_ET_CONN_TO) {
2826 err = SN_ERR_SRVTO;
2827 fin = SN_FINST_C;
2828 }
2829 else if (err_type & SI_ET_CONN_ERR) {
2830 err = SN_ERR_SRVCL;
2831 fin = SN_FINST_C;
2832 }
Willy Tarreau2d400bb2012-05-14 12:11:47 +02002833 else if (err_type & SI_ET_CONN_RES) {
2834 err = SN_ERR_RESOURCE;
2835 fin = SN_FINST_C;
2836 }
Willy Tarreau84455332009-03-15 22:34:05 +01002837 else /* SI_ET_CONN_OTHER and others */ {
2838 err = SN_ERR_INTERNAL;
2839 fin = SN_FINST_C;
2840 }
2841
2842 if (!(s->flags & SN_ERR_MASK))
2843 s->flags |= err;
2844 if (!(s->flags & SN_FINST_MASK))
2845 s->flags |= fin;
2846}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002847
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002848/* kill a session and set the termination flags to <why> (one of SN_ERR_*) */
2849void session_shutdown(struct session *session, int why)
2850{
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002851 if (session->req->flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002852 return;
2853
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002854 channel_shutw_now(session->req);
2855 channel_shutr_now(session->rep);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002856 session->task->nice = 1024;
2857 if (!(session->flags & SN_ERR_MASK))
2858 session->flags |= why;
2859 task_wakeup(session->task, TASK_WOKEN_OTHER);
2860}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002861
Willy Tarreau8b22a712010-06-18 17:46:06 +02002862/************************************************************************/
2863/* All supported ACL keywords must be declared here. */
2864/************************************************************************/
2865
Willy Tarreau4d4149c2013-07-23 19:33:46 +02002866/* Returns a pointer to a stkctr depending on the fetch keyword name.
2867 * It is designed to be called as sc[0-9]_* sc_* or src_* exclusively.
Willy Tarreaua65536c2013-07-22 22:40:11 +02002868 * sc[0-9]_* will return a pointer to the respective field in the
Willy Tarreau4d4149c2013-07-23 19:33:46 +02002869 * session <l4>. sc_* requires an UINT argument specifying the stick
2870 * counter number. src_* will fill a locally allocated structure with
Willy Tarreaua65536c2013-07-22 22:40:11 +02002871 * the table and entry corresponding to what is specified with src_*.
Willy Tarreau0f791d42013-07-23 19:56:43 +02002872 * NULL may be returned if the designated stkctr is not tracked. For
2873 * the sc_* and sc[0-9]_* forms, an optional table argument may be
2874 * passed. When present, the currently tracked key is then looked up
2875 * in the specified table instead of the current table. The purpose is
2876 * to be able to convery multiple values per key (eg: have gpc0 from
2877 * multiple tables).
Willy Tarreaua65536c2013-07-22 22:40:11 +02002878 */
Willy Tarreaue12704b2014-07-15 19:06:18 +02002879struct stkctr *
Willy Tarreaua65536c2013-07-22 22:40:11 +02002880smp_fetch_sc_stkctr(struct session *l4, const struct arg *args, const char *kw)
2881{
2882 static struct stkctr stkctr;
Willy Tarreau6a0b6bd2014-04-09 13:25:42 +02002883 struct stksess *stksess;
Willy Tarreau4d4149c2013-07-23 19:33:46 +02002884 unsigned int num = kw[2] - '0';
Willy Tarreau0f791d42013-07-23 19:56:43 +02002885 int arg = 0;
Willy Tarreaua65536c2013-07-22 22:40:11 +02002886
Willy Tarreau0f791d42013-07-23 19:56:43 +02002887 if (num == '_' - '0') {
2888 /* sc_* variant, args[0] = ctr# (mandatory) */
2889 num = args[arg++].data.uint;
Willy Tarreau4d4149c2013-07-23 19:33:46 +02002890 if (num >= MAX_SESS_STKCTR)
2891 return NULL;
Willy Tarreaua65536c2013-07-22 22:40:11 +02002892 }
Willy Tarreau0f791d42013-07-23 19:56:43 +02002893 else if (num > 9) { /* src_* variant, args[0] = table */
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002894 struct stktable_key *key;
2895 struct connection *conn = objt_conn(l4->si[0].end);
2896
2897 if (!conn)
2898 return NULL;
Willy Tarreaua65536c2013-07-22 22:40:11 +02002899
Thierry FOURNIER74c219d2014-04-14 14:35:40 +02002900 key = addr_to_stktable_key(&conn->addr.from, args->data.prx->table.type);
Willy Tarreaua65536c2013-07-22 22:40:11 +02002901 if (!key)
2902 return NULL;
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002903
Willy Tarreaua65536c2013-07-22 22:40:11 +02002904 stkctr.table = &args->data.prx->table;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01002905 stkctr_set_entry(&stkctr, stktable_lookup_key(stkctr.table, key));
Willy Tarreaua65536c2013-07-22 22:40:11 +02002906 return &stkctr;
2907 }
Willy Tarreau0f791d42013-07-23 19:56:43 +02002908
2909 /* Here, <num> contains the counter number from 0 to 9 for
2910 * the sc[0-9]_ form, or even higher using sc_(num) if needed.
2911 * args[arg] is the first optional argument.
2912 */
Willy Tarreau6a0b6bd2014-04-09 13:25:42 +02002913 stksess = stkctr_entry(&l4->stkctr[num]);
2914 if (!stksess)
2915 return NULL;
2916
Willy Tarreau0f791d42013-07-23 19:56:43 +02002917 if (unlikely(args[arg].type == ARGT_TAB)) {
2918 /* an alternate table was specified, let's look up the same key there */
2919 stkctr.table = &args[arg].data.prx->table;
Willy Tarreau6a0b6bd2014-04-09 13:25:42 +02002920 stkctr_set_entry(&stkctr, stktable_lookup(stkctr.table, stksess));
Willy Tarreau0f791d42013-07-23 19:56:43 +02002921 return &stkctr;
2922 }
Willy Tarreau6a0b6bd2014-04-09 13:25:42 +02002923 return &l4->stkctr[num];
Willy Tarreaua65536c2013-07-22 22:40:11 +02002924}
2925
Willy Tarreau88821242013-07-22 18:29:29 +02002926/* set return a boolean indicating if the requested session counter is
2927 * currently being tracked or not.
2928 * Supports being called as "sc[0-9]_tracked" only.
2929 */
Willy Tarreau6f1615f2013-06-03 15:15:22 +02002930static int
Willy Tarreau88821242013-07-22 18:29:29 +02002931smp_fetch_sc_tracked(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02002932 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau6f1615f2013-06-03 15:15:22 +02002933{
2934 smp->flags = SMP_F_VOL_TEST;
2935 smp->type = SMP_T_BOOL;
Thierry FOURNIERd988f212014-04-15 01:15:52 +02002936 smp->data.uint = !!smp_fetch_sc_stkctr(l4, args, kw);
Willy Tarreau6f1615f2013-06-03 15:15:22 +02002937 return 1;
2938}
2939
Willy Tarreau30b20462013-07-22 19:46:52 +02002940/* set <smp> to the General Purpose Counter 0 value from the session's tracked
2941 * frontend counters or from the src.
2942 * Supports being called as "sc[0-9]_get_gpc0" or "src_get_gpc0" only. Value
2943 * zero is returned if the key is new.
2944 */
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002945static int
Willy Tarreau30b20462013-07-22 19:46:52 +02002946smp_fetch_sc_get_gpc0(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2947 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002948{
Willy Tarreau30b20462013-07-22 19:46:52 +02002949 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2950
2951 if (!stkctr)
2952 return 0;
2953
Willy Tarreau37406352012-04-23 16:16:37 +02002954 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002955 smp->type = SMP_T_UINT;
2956 smp->data.uint = 0;
Willy Tarreau30b20462013-07-22 19:46:52 +02002957
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01002958 if (stkctr_entry(stkctr) != NULL) {
2959 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_GPC0);
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002960 if (!ptr)
2961 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002962 smp->data.uint = stktable_data_cast(ptr, gpc0);
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002963 }
2964 return 1;
2965}
2966
Willy Tarreaub5e0af02013-07-22 23:47:07 +02002967/* set <smp> to the General Purpose Counter 0's event rate from the session's
2968 * tracked frontend counters or from the src.
2969 * Supports being called as "sc[0-9]_gpc0_rate" or "src_gpc0_rate" only.
2970 * Value zero is returned if the key is new.
2971 */
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002972static int
Willy Tarreaub5e0af02013-07-22 23:47:07 +02002973smp_fetch_sc_gpc0_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2974 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002975{
Willy Tarreaub5e0af02013-07-22 23:47:07 +02002976 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2977
2978 if (!stkctr)
2979 return 0;
2980
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002981 smp->flags = SMP_F_VOL_TEST;
2982 smp->type = SMP_T_UINT;
2983 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01002984 if (stkctr_entry(stkctr) != NULL) {
2985 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_GPC0_RATE);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002986 if (!ptr)
2987 return 0; /* parameter not stored */
2988 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, gpc0_rate),
Willy Tarreaub5e0af02013-07-22 23:47:07 +02002989 stkctr->table->data_arg[STKTABLE_DT_GPC0_RATE].u);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002990 }
2991 return 1;
2992}
2993
Willy Tarreau710d38c2013-07-23 00:07:04 +02002994/* Increment the General Purpose Counter 0 value from the session's tracked
2995 * frontend counters and return it into temp integer.
2996 * Supports being called as "sc[0-9]_inc_gpc0" or "src_inc_gpc0" only.
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002997 */
2998static int
Willy Tarreau710d38c2013-07-23 00:07:04 +02002999smp_fetch_sc_inc_gpc0(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3000 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauc3bd9722010-06-20 12:47:25 +02003001{
Willy Tarreau710d38c2013-07-23 00:07:04 +02003002 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3003
3004 if (!stkctr)
3005 return 0;
3006
Willy Tarreau37406352012-04-23 16:16:37 +02003007 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003008 smp->type = SMP_T_UINT;
3009 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003010 if (stkctr_entry(stkctr) != NULL) {
Willy Tarreauba2ffd12013-05-29 15:54:14 +02003011 void *ptr;
3012
3013 /* First, update gpc0_rate if it's tracked. Second, update its
3014 * gpc0 if tracked. Returns gpc0's value otherwise the curr_ctr.
3015 */
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003016 ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_GPC0_RATE);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02003017 if (ptr) {
3018 update_freq_ctr_period(&stktable_data_cast(ptr, gpc0_rate),
Willy Tarreau710d38c2013-07-23 00:07:04 +02003019 stkctr->table->data_arg[STKTABLE_DT_GPC0_RATE].u, 1);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02003020 smp->data.uint = (&stktable_data_cast(ptr, gpc0_rate))->curr_ctr;
3021 }
3022
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003023 ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_GPC0);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02003024 if (ptr)
3025 smp->data.uint = ++stktable_data_cast(ptr, gpc0);
3026
Willy Tarreauc3bd9722010-06-20 12:47:25 +02003027 }
3028 return 1;
3029}
3030
Willy Tarreaub9f441d2013-07-23 00:10:35 +02003031/* Clear the General Purpose Counter 0 value from the session's tracked
3032 * frontend counters and return its previous value into temp integer.
3033 * Supports being called as "sc[0-9]_clr_gpc0" or "src_clr_gpc0" only.
Willy Tarreauf73cd112011-08-13 01:45:16 +02003034 */
3035static int
Willy Tarreaub9f441d2013-07-23 00:10:35 +02003036smp_fetch_sc_clr_gpc0(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3037 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauf73cd112011-08-13 01:45:16 +02003038{
Willy Tarreaub9f441d2013-07-23 00:10:35 +02003039 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3040
3041 if (!stkctr)
3042 return 0;
3043
Willy Tarreau37406352012-04-23 16:16:37 +02003044 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003045 smp->type = SMP_T_UINT;
3046 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003047 if (stkctr_entry(stkctr) != NULL) {
3048 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_GPC0);
Willy Tarreauf73cd112011-08-13 01:45:16 +02003049 if (!ptr)
3050 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003051 smp->data.uint = stktable_data_cast(ptr, gpc0);
Willy Tarreauf73cd112011-08-13 01:45:16 +02003052 stktable_data_cast(ptr, gpc0) = 0;
3053 }
3054 return 1;
3055}
3056
Willy Tarreau3b46c5c2013-07-23 00:22:50 +02003057/* set <smp> to the cumulated number of connections from the session's tracked
3058 * frontend counters. Supports being called as "sc[0-9]_conn_cnt" or
3059 * "src_conn_cnt" only.
3060 */
Willy Tarreau9a3f8492010-06-18 19:53:25 +02003061static int
Willy Tarreau3b46c5c2013-07-23 00:22:50 +02003062smp_fetch_sc_conn_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3063 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau9a3f8492010-06-18 19:53:25 +02003064{
Willy Tarreau3b46c5c2013-07-23 00:22:50 +02003065 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3066
3067 if (!stkctr)
3068 return 0;
3069
Willy Tarreau37406352012-04-23 16:16:37 +02003070 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003071 smp->type = SMP_T_UINT;
3072 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003073 if (stkctr_entry(stkctr) != NULL) {
3074 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_CONN_CNT);
Willy Tarreau9a3f8492010-06-18 19:53:25 +02003075 if (!ptr)
3076 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003077 smp->data.uint = stktable_data_cast(ptr, conn_cnt);
Willy Tarreau9a3f8492010-06-18 19:53:25 +02003078 }
Willy Tarreau9a3f8492010-06-18 19:53:25 +02003079 return 1;
3080}
3081
Willy Tarreauc8c65702013-07-23 15:09:35 +02003082/* set <smp> to the connection rate from the session's tracked frontend
3083 * counters. Supports being called as "sc[0-9]_conn_rate" or "src_conn_rate"
3084 * only.
3085 */
Willy Tarreau91c43d72010-06-20 11:19:22 +02003086static int
Willy Tarreauc8c65702013-07-23 15:09:35 +02003087smp_fetch_sc_conn_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3088 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau91c43d72010-06-20 11:19:22 +02003089{
Willy Tarreauc8c65702013-07-23 15:09:35 +02003090 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3091
3092 if (!stkctr)
3093 return 0;
3094
Willy Tarreau37406352012-04-23 16:16:37 +02003095 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003096 smp->type = SMP_T_UINT;
3097 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003098 if (stkctr_entry(stkctr) != NULL) {
3099 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_CONN_RATE);
Willy Tarreau91c43d72010-06-20 11:19:22 +02003100 if (!ptr)
3101 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003102 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, conn_rate),
Willy Tarreauc8c65702013-07-23 15:09:35 +02003103 stkctr->table->data_arg[STKTABLE_DT_CONN_RATE].u);
Willy Tarreau91c43d72010-06-20 11:19:22 +02003104 }
3105 return 1;
3106}
3107
Willy Tarreaua5e37562011-12-16 17:06:15 +01003108/* set temp integer to the number of connections from the session's source address
Willy Tarreau8b22a712010-06-18 17:46:06 +02003109 * in the table pointed to by expr, after updating it.
Willy Tarreau0146c2e2012-04-20 11:37:56 +02003110 * Accepts exactly 1 argument of type table.
Willy Tarreau8b22a712010-06-18 17:46:06 +02003111 */
3112static int
Willy Tarreau281c7992013-01-08 01:23:27 +01003113smp_fetch_src_updt_conn_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02003114 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8b22a712010-06-18 17:46:06 +02003115{
Willy Tarreaub363a1f2013-10-01 10:45:07 +02003116 struct connection *conn = objt_conn(l4->si[0].end);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003117 struct stksess *ts;
3118 struct stktable_key *key;
3119 void *ptr;
3120
Willy Tarreaub363a1f2013-10-01 10:45:07 +02003121 if (!conn)
3122 return 0;
3123
Thierry FOURNIER74c219d2014-04-14 14:35:40 +02003124 key = addr_to_stktable_key(&conn->addr.from, px->table.type);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003125 if (!key)
David du Colombier4f92d322011-03-24 11:09:31 +01003126 return 0;
Willy Tarreau8b22a712010-06-18 17:46:06 +02003127
Willy Tarreau24e32d82012-04-23 23:55:44 +02003128 px = args->data.prx;
Willy Tarreau8b22a712010-06-18 17:46:06 +02003129
Willy Tarreau1f7e9252010-06-20 12:27:21 +02003130 if ((ts = stktable_update_key(&px->table, key)) == NULL)
3131 /* entry does not exist and could not be created */
3132 return 0;
Willy Tarreau8b22a712010-06-18 17:46:06 +02003133
3134 ptr = stktable_data_ptr(&px->table, ts, STKTABLE_DT_CONN_CNT);
3135 if (!ptr)
3136 return 0; /* parameter not stored in this table */
3137
Willy Tarreauf853c462012-04-23 18:53:56 +02003138 smp->type = SMP_T_UINT;
3139 smp->data.uint = ++stktable_data_cast(ptr, conn_cnt);
Willy Tarreau37406352012-04-23 16:16:37 +02003140 smp->flags = SMP_F_VOL_TEST;
Willy Tarreau8b22a712010-06-18 17:46:06 +02003141 return 1;
3142}
3143
Willy Tarreauf44a5532013-07-23 15:17:53 +02003144/* set <smp> to the number of concurrent connections from the session's tracked
3145 * frontend counters. Supports being called as "sc[0-9]_conn_cur" or
3146 * "src_conn_cur" only.
3147 */
Willy Tarreau9b0ddcf2010-06-18 21:14:36 +02003148static int
Willy Tarreauf44a5532013-07-23 15:17:53 +02003149smp_fetch_sc_conn_cur(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3150 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau9b0ddcf2010-06-18 21:14:36 +02003151{
Willy Tarreauf44a5532013-07-23 15:17:53 +02003152 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3153
3154 if (!stkctr)
3155 return 0;
3156
Willy Tarreau37406352012-04-23 16:16:37 +02003157 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003158 smp->type = SMP_T_UINT;
3159 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003160 if (stkctr_entry(stkctr) != NULL) {
3161 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_CONN_CUR);
Willy Tarreau9b0ddcf2010-06-18 21:14:36 +02003162 if (!ptr)
3163 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003164 smp->data.uint = stktable_data_cast(ptr, conn_cur);
Willy Tarreau9b0ddcf2010-06-18 21:14:36 +02003165 }
3166 return 1;
3167}
3168
Willy Tarreau20843082013-07-23 15:35:33 +02003169/* set <smp> to the cumulated number of sessions from the session's tracked
3170 * frontend counters. Supports being called as "sc[0-9]_sess_cnt" or
3171 * "src_sess_cnt" only.
3172 */
Willy Tarreauf4d17d92010-06-18 22:10:12 +02003173static int
Willy Tarreau20843082013-07-23 15:35:33 +02003174smp_fetch_sc_sess_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3175 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauf4d17d92010-06-18 22:10:12 +02003176{
Willy Tarreau20843082013-07-23 15:35:33 +02003177 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3178
3179 if (!stkctr)
3180 return 0;
3181
Willy Tarreau37406352012-04-23 16:16:37 +02003182 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003183 smp->type = SMP_T_UINT;
3184 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003185 if (stkctr_entry(stkctr) != NULL) {
3186 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_SESS_CNT);
Willy Tarreauf4d17d92010-06-18 22:10:12 +02003187 if (!ptr)
3188 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003189 smp->data.uint = stktable_data_cast(ptr, sess_cnt);
Willy Tarreauf4d17d92010-06-18 22:10:12 +02003190 }
3191 return 1;
3192}
3193
Willy Tarreau3a96f3f2013-07-23 15:48:01 +02003194/* set <smp> to the session rate from the session's tracked frontend counters.
3195 * Supports being called as "sc[0-9]_sess_rate" or "src_sess_rate" only.
3196 */
Willy Tarreau91c43d72010-06-20 11:19:22 +02003197static int
Willy Tarreau3a96f3f2013-07-23 15:48:01 +02003198smp_fetch_sc_sess_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3199 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau91c43d72010-06-20 11:19:22 +02003200{
Willy Tarreau3a96f3f2013-07-23 15:48:01 +02003201 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3202
3203 if (!stkctr)
3204 return 0;
3205
Willy Tarreau37406352012-04-23 16:16:37 +02003206 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003207 smp->type = SMP_T_UINT;
3208 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003209 if (stkctr_entry(stkctr) != NULL) {
3210 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_SESS_RATE);
Willy Tarreau91c43d72010-06-20 11:19:22 +02003211 if (!ptr)
3212 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003213 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, sess_rate),
Willy Tarreau3a96f3f2013-07-23 15:48:01 +02003214 stkctr->table->data_arg[STKTABLE_DT_SESS_RATE].u);
Willy Tarreau91c43d72010-06-20 11:19:22 +02003215 }
3216 return 1;
3217}
3218
Willy Tarreau91200da2013-07-23 15:55:19 +02003219/* set <smp> to the cumulated number of HTTP requests from the session's tracked
3220 * frontend counters. Supports being called as "sc[0-9]_http_req_cnt" or
3221 * "src_http_req_cnt" only.
3222 */
Willy Tarreauda7ff642010-06-23 11:44:09 +02003223static int
Willy Tarreau91200da2013-07-23 15:55:19 +02003224smp_fetch_sc_http_req_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3225 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauda7ff642010-06-23 11:44:09 +02003226{
Willy Tarreau91200da2013-07-23 15:55:19 +02003227 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3228
3229 if (!stkctr)
3230 return 0;
3231
Willy Tarreau37406352012-04-23 16:16:37 +02003232 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003233 smp->type = SMP_T_UINT;
3234 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003235 if (stkctr_entry(stkctr) != NULL) {
3236 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_HTTP_REQ_CNT);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003237 if (!ptr)
3238 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003239 smp->data.uint = stktable_data_cast(ptr, http_req_cnt);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003240 }
3241 return 1;
3242}
3243
Willy Tarreaucf477632013-07-23 16:04:37 +02003244/* set <smp> to the HTTP request rate from the session's tracked frontend
3245 * counters. Supports being called as "sc[0-9]_http_req_rate" or
3246 * "src_http_req_rate" only.
3247 */
Willy Tarreauda7ff642010-06-23 11:44:09 +02003248static int
Willy Tarreaucf477632013-07-23 16:04:37 +02003249smp_fetch_sc_http_req_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3250 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauda7ff642010-06-23 11:44:09 +02003251{
Willy Tarreaucf477632013-07-23 16:04:37 +02003252 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3253
3254 if (!stkctr)
3255 return 0;
3256
Willy Tarreau37406352012-04-23 16:16:37 +02003257 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003258 smp->type = SMP_T_UINT;
3259 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003260 if (stkctr_entry(stkctr) != NULL) {
3261 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_HTTP_REQ_RATE);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003262 if (!ptr)
3263 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003264 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
Willy Tarreaucf477632013-07-23 16:04:37 +02003265 stkctr->table->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003266 }
3267 return 1;
3268}
3269
Willy Tarreau30d07c32013-07-23 16:45:38 +02003270/* set <smp> to the cumulated number of HTTP requests errors from the session's
3271 * tracked frontend counters. Supports being called as "sc[0-9]_http_err_cnt" or
3272 * "src_http_err_cnt" only.
3273 */
Willy Tarreauda7ff642010-06-23 11:44:09 +02003274static int
Willy Tarreau30d07c32013-07-23 16:45:38 +02003275smp_fetch_sc_http_err_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3276 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauda7ff642010-06-23 11:44:09 +02003277{
Willy Tarreau30d07c32013-07-23 16:45:38 +02003278 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3279
3280 if (!stkctr)
3281 return 0;
3282
Willy Tarreau37406352012-04-23 16:16:37 +02003283 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003284 smp->type = SMP_T_UINT;
3285 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003286 if (stkctr_entry(stkctr) != NULL) {
3287 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_HTTP_ERR_CNT);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003288 if (!ptr)
3289 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003290 smp->data.uint = stktable_data_cast(ptr, http_err_cnt);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003291 }
3292 return 1;
3293}
3294
Willy Tarreau9daf2622013-07-23 16:48:54 +02003295/* set <smp> to the HTTP request error rate from the session's tracked frontend
3296 * counters. Supports being called as "sc[0-9]_http_err_rate" or
3297 * "src_http_err_rate" only.
3298 */
Willy Tarreauda7ff642010-06-23 11:44:09 +02003299static int
Willy Tarreau9daf2622013-07-23 16:48:54 +02003300smp_fetch_sc_http_err_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3301 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauda7ff642010-06-23 11:44:09 +02003302{
Willy Tarreau9daf2622013-07-23 16:48:54 +02003303 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3304
3305 if (!stkctr)
3306 return 0;
3307
Willy Tarreau37406352012-04-23 16:16:37 +02003308 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003309 smp->type = SMP_T_UINT;
3310 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003311 if (stkctr_entry(stkctr) != NULL) {
3312 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_HTTP_ERR_RATE);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003313 if (!ptr)
3314 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003315 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
Willy Tarreau9daf2622013-07-23 16:48:54 +02003316 stkctr->table->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003317 }
3318 return 1;
3319}
3320
Willy Tarreau5077d4b2013-07-23 17:17:10 +02003321/* set <smp> to the number of kbytes received from clients, as found in the
3322 * session's tracked frontend counters. Supports being called as
3323 * "sc[0-9]_kbytes_in" or "src_kbytes_in" only.
3324 */
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003325static int
Willy Tarreau5077d4b2013-07-23 17:17:10 +02003326smp_fetch_sc_kbytes_in(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3327 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003328{
Willy Tarreau5077d4b2013-07-23 17:17:10 +02003329 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3330
3331 if (!stkctr)
3332 return 0;
3333
Willy Tarreau37406352012-04-23 16:16:37 +02003334 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003335 smp->type = SMP_T_UINT;
3336 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003337 if (stkctr_entry(stkctr) != NULL) {
3338 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_CNT);
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003339 if (!ptr)
3340 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003341 smp->data.uint = stktable_data_cast(ptr, bytes_in_cnt) >> 10;
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003342 }
3343 return 1;
3344}
3345
Willy Tarreau613fe992013-07-23 17:39:19 +02003346/* set <smp> to the data rate received from clients in bytes/s, as found
3347 * in the session's tracked frontend counters. Supports being called as
3348 * "sc[0-9]_bytes_in_rate" or "src_bytes_in_rate" only.
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003349 */
3350static int
Willy Tarreau613fe992013-07-23 17:39:19 +02003351smp_fetch_sc_bytes_in_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3352 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003353{
Willy Tarreau613fe992013-07-23 17:39:19 +02003354 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3355
3356 if (!stkctr)
3357 return 0;
3358
Willy Tarreau37406352012-04-23 16:16:37 +02003359 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003360 smp->type = SMP_T_UINT;
3361 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003362 if (stkctr_entry(stkctr) != NULL) {
3363 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_IN_RATE);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003364 if (!ptr)
3365 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003366 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, bytes_in_rate),
Willy Tarreau613fe992013-07-23 17:39:19 +02003367 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003368 }
3369 return 1;
3370}
3371
Willy Tarreau53aea102013-07-23 17:39:02 +02003372/* set <smp> to the number of kbytes sent to clients, as found in the
3373 * session's tracked frontend counters. Supports being called as
3374 * "sc[0-9]_kbytes_out" or "src_kbytes_out" only.
3375 */
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003376static int
Willy Tarreau53aea102013-07-23 17:39:02 +02003377smp_fetch_sc_kbytes_out(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3378 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003379{
Willy Tarreau53aea102013-07-23 17:39:02 +02003380 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3381
3382 if (!stkctr)
3383 return 0;
3384
Willy Tarreau37406352012-04-23 16:16:37 +02003385 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003386 smp->type = SMP_T_UINT;
3387 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003388 if (stkctr_entry(stkctr) != NULL) {
3389 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_CNT);
Willy Tarreau855e4bb2010-06-18 18:33:32 +02003390 if (!ptr)
3391 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003392 smp->data.uint = stktable_data_cast(ptr, bytes_out_cnt) >> 10;
Willy Tarreau855e4bb2010-06-18 18:33:32 +02003393 }
Willy Tarreau855e4bb2010-06-18 18:33:32 +02003394 return 1;
3395}
3396
Willy Tarreaua0b68ed2013-07-23 18:26:32 +02003397/* set <smp> to the data rate sent to clients in bytes/s, as found in the
3398 * session's tracked frontend counters. Supports being called as
3399 * "sc[0-9]_bytes_out_rate" or "src_bytes_out_rate" only.
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003400 */
3401static int
Willy Tarreaua0b68ed2013-07-23 18:26:32 +02003402smp_fetch_sc_bytes_out_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3403 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003404{
Willy Tarreaua0b68ed2013-07-23 18:26:32 +02003405 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3406
3407 if (!stkctr)
3408 return 0;
3409
Willy Tarreau37406352012-04-23 16:16:37 +02003410 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003411 smp->type = SMP_T_UINT;
3412 smp->data.uint = 0;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003413 if (stkctr_entry(stkctr) != NULL) {
3414 void *ptr = stktable_data_ptr(stkctr->table, stkctr_entry(stkctr), STKTABLE_DT_BYTES_OUT_RATE);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003415 if (!ptr)
3416 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003417 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, bytes_out_rate),
Willy Tarreaua0b68ed2013-07-23 18:26:32 +02003418 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003419 }
3420 return 1;
3421}
3422
Willy Tarreau563eef42013-07-23 18:32:02 +02003423/* set <smp> to the number of active trackers on the SC entry in the session's
3424 * tracked frontend counters. Supports being called as "sc[0-9]_trackers" only.
3425 */
Willy Tarreau2406db42012-12-09 12:16:43 +01003426static int
Willy Tarreau563eef42013-07-23 18:32:02 +02003427smp_fetch_sc_trackers(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02003428 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2406db42012-12-09 12:16:43 +01003429{
Willy Tarreau563eef42013-07-23 18:32:02 +02003430 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
Willy Tarreau2406db42012-12-09 12:16:43 +01003431
Willy Tarreau563eef42013-07-23 18:32:02 +02003432 if (!stkctr)
Willy Tarreau2406db42012-12-09 12:16:43 +01003433 return 0;
3434
Willy Tarreau563eef42013-07-23 18:32:02 +02003435 smp->flags = SMP_F_VOL_TEST;
3436 smp->type = SMP_T_UINT;
Willy Tarreaucc08d2c2014-01-28 23:18:23 +01003437 smp->data.uint = stkctr_entry(stkctr)->ref_cnt;
Willy Tarreau563eef42013-07-23 18:32:02 +02003438 return 1;
Willy Tarreaue25c9172013-05-28 18:32:20 +02003439}
3440
Willy Tarreau34db1082012-04-19 17:16:54 +02003441/* set temp integer to the number of used entries in the table pointed to by expr.
Willy Tarreau0146c2e2012-04-20 11:37:56 +02003442 * Accepts exactly 1 argument of type table.
Willy Tarreau34db1082012-04-19 17:16:54 +02003443 */
Willy Tarreauc735a072011-03-29 00:57:02 +02003444static int
Willy Tarreau281c7992013-01-08 01:23:27 +01003445smp_fetch_table_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02003446 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauc735a072011-03-29 00:57:02 +02003447{
Willy Tarreau37406352012-04-23 16:16:37 +02003448 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003449 smp->type = SMP_T_UINT;
Willy Tarreau24e32d82012-04-23 23:55:44 +02003450 smp->data.uint = args->data.prx->table.current;
Willy Tarreauc735a072011-03-29 00:57:02 +02003451 return 1;
3452}
3453
Willy Tarreau34db1082012-04-19 17:16:54 +02003454/* set temp integer to the number of free entries in the table pointed to by expr.
Willy Tarreau0146c2e2012-04-20 11:37:56 +02003455 * Accepts exactly 1 argument of type table.
Willy Tarreau34db1082012-04-19 17:16:54 +02003456 */
Willy Tarreauc735a072011-03-29 00:57:02 +02003457static int
Willy Tarreau281c7992013-01-08 01:23:27 +01003458smp_fetch_table_avl(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02003459 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauc735a072011-03-29 00:57:02 +02003460{
Willy Tarreau24e32d82012-04-23 23:55:44 +02003461 px = args->data.prx;
Willy Tarreau37406352012-04-23 16:16:37 +02003462 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003463 smp->type = SMP_T_UINT;
3464 smp->data.uint = px->table.size - px->table.current;
Willy Tarreauc735a072011-03-29 00:57:02 +02003465 return 1;
3466}
Willy Tarreau8b22a712010-06-18 17:46:06 +02003467
Willy Tarreau61612d42012-04-19 18:42:05 +02003468/* Note: must not be declared <const> as its list will be overwritten.
3469 * Please take care of keeping this list alphabetically sorted.
3470 */
Willy Tarreaudc13c112013-06-21 23:16:39 +02003471static struct acl_kw_list acl_kws = {ILH, {
Willy Tarreau281c7992013-01-08 01:23:27 +01003472 { /* END */ },
Willy Tarreau8b22a712010-06-18 17:46:06 +02003473}};
3474
Willy Tarreau281c7992013-01-08 01:23:27 +01003475/* Note: must not be declared <const> as its list will be overwritten.
3476 * Please take care of keeping this list alphabetically sorted.
3477 */
Willy Tarreaudc13c112013-06-21 23:16:39 +02003478static struct sample_fetch_kw_list smp_fetch_keywords = {ILH, {
Willy Tarreau0f791d42013-07-23 19:56:43 +02003479 { "sc_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3480 { "sc_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3481 { "sc_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3482 { "sc_conn_cnt", smp_fetch_sc_conn_cnt, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3483 { "sc_conn_cur", smp_fetch_sc_conn_cur, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3484 { "sc_conn_rate", smp_fetch_sc_conn_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3485 { "sc_get_gpc0", smp_fetch_sc_get_gpc0, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3486 { "sc_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3487 { "sc_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3488 { "sc_http_err_rate", smp_fetch_sc_http_err_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3489 { "sc_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3490 { "sc_http_req_rate", smp_fetch_sc_http_req_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3491 { "sc_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3492 { "sc_kbytes_in", smp_fetch_sc_kbytes_in, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3493 { "sc_kbytes_out", smp_fetch_sc_kbytes_out, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3494 { "sc_sess_cnt", smp_fetch_sc_sess_cnt, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3495 { "sc_sess_rate", smp_fetch_sc_sess_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3496 { "sc_tracked", smp_fetch_sc_tracked, ARG2(1,UINT,TAB), NULL, SMP_T_BOOL, SMP_USE_INTRN, },
3497 { "sc_trackers", smp_fetch_sc_trackers, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3498 { "sc0_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3499 { "sc0_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3500 { "sc0_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3501 { "sc0_conn_cnt", smp_fetch_sc_conn_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3502 { "sc0_conn_cur", smp_fetch_sc_conn_cur, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3503 { "sc0_conn_rate", smp_fetch_sc_conn_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3504 { "sc0_get_gpc0", smp_fetch_sc_get_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3505 { "sc0_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3506 { "sc0_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3507 { "sc0_http_err_rate", smp_fetch_sc_http_err_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3508 { "sc0_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3509 { "sc0_http_req_rate", smp_fetch_sc_http_req_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3510 { "sc0_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3511 { "sc0_kbytes_in", smp_fetch_sc_kbytes_in, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3512 { "sc0_kbytes_out", smp_fetch_sc_kbytes_out, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3513 { "sc0_sess_cnt", smp_fetch_sc_sess_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3514 { "sc0_sess_rate", smp_fetch_sc_sess_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3515 { "sc0_tracked", smp_fetch_sc_tracked, ARG1(0,TAB), NULL, SMP_T_BOOL, SMP_USE_INTRN, },
3516 { "sc0_trackers", smp_fetch_sc_trackers, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3517 { "sc1_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3518 { "sc1_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3519 { "sc1_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3520 { "sc1_conn_cnt", smp_fetch_sc_conn_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3521 { "sc1_conn_cur", smp_fetch_sc_conn_cur, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3522 { "sc1_conn_rate", smp_fetch_sc_conn_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3523 { "sc1_get_gpc0", smp_fetch_sc_get_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3524 { "sc1_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3525 { "sc1_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3526 { "sc1_http_err_rate", smp_fetch_sc_http_err_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3527 { "sc1_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3528 { "sc1_http_req_rate", smp_fetch_sc_http_req_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3529 { "sc1_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3530 { "sc1_kbytes_in", smp_fetch_sc_kbytes_in, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3531 { "sc1_kbytes_out", smp_fetch_sc_kbytes_out, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3532 { "sc1_sess_cnt", smp_fetch_sc_sess_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3533 { "sc1_sess_rate", smp_fetch_sc_sess_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3534 { "sc1_tracked", smp_fetch_sc_tracked, ARG1(0,TAB), NULL, SMP_T_BOOL, SMP_USE_INTRN, },
3535 { "sc1_trackers", smp_fetch_sc_trackers, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3536 { "sc2_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3537 { "sc2_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3538 { "sc2_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3539 { "sc2_conn_cnt", smp_fetch_sc_conn_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3540 { "sc2_conn_cur", smp_fetch_sc_conn_cur, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3541 { "sc2_conn_rate", smp_fetch_sc_conn_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3542 { "sc2_get_gpc0", smp_fetch_sc_get_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3543 { "sc2_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3544 { "sc2_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3545 { "sc2_http_err_rate", smp_fetch_sc_http_err_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3546 { "sc2_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3547 { "sc2_http_req_rate", smp_fetch_sc_http_req_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3548 { "sc2_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3549 { "sc2_kbytes_in", smp_fetch_sc_kbytes_in, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3550 { "sc2_kbytes_out", smp_fetch_sc_kbytes_out, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3551 { "sc2_sess_cnt", smp_fetch_sc_sess_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3552 { "sc2_sess_rate", smp_fetch_sc_sess_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3553 { "sc2_tracked", smp_fetch_sc_tracked, ARG1(0,TAB), NULL, SMP_T_BOOL, SMP_USE_INTRN, },
3554 { "sc2_trackers", smp_fetch_sc_trackers, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3555 { "src_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3556 { "src_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3557 { "src_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3558 { "src_conn_cnt", smp_fetch_sc_conn_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3559 { "src_conn_cur", smp_fetch_sc_conn_cur, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3560 { "src_conn_rate", smp_fetch_sc_conn_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3561 { "src_get_gpc0", smp_fetch_sc_get_gpc0, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3562 { "src_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3563 { "src_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3564 { "src_http_err_rate", smp_fetch_sc_http_err_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3565 { "src_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3566 { "src_http_req_rate", smp_fetch_sc_http_req_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3567 { "src_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3568 { "src_kbytes_in", smp_fetch_sc_kbytes_in, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3569 { "src_kbytes_out", smp_fetch_sc_kbytes_out, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3570 { "src_sess_cnt", smp_fetch_sc_sess_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3571 { "src_sess_rate", smp_fetch_sc_sess_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3572 { "src_updt_conn_cnt", smp_fetch_src_updt_conn_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3573 { "table_avl", smp_fetch_table_avl, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3574 { "table_cnt", smp_fetch_table_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
Willy Tarreau281c7992013-01-08 01:23:27 +01003575 { /* END */ },
3576}};
3577
Willy Tarreau8b22a712010-06-18 17:46:06 +02003578__attribute__((constructor))
3579static void __session_init(void)
3580{
Willy Tarreau281c7992013-01-08 01:23:27 +01003581 sample_register_fetches(&smp_fetch_keywords);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003582 acl_register_keywords(&acl_kws);
3583}
3584
Willy Tarreaubaaee002006-06-26 02:48:02 +02003585/*
3586 * Local variables:
3587 * c-indent-level: 8
3588 * c-basic-offset: 8
3589 * End:
3590 */