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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 Tarreau071e1372012-10-03 01:39:48 +020054static int conn_session_complete(struct connection *conn);
Willy Tarreau9683e9a2012-10-03 21:17:23 +020055static int conn_session_update(struct connection *conn);
Willy Tarreau2542b532012-08-31 16:01:23 +020056static struct task *expire_mini_session(struct task *t);
57int session_complete(struct session *s);
58
Willy Tarreau5e75e272012-10-02 21:21:20 +020059/* data layer callbacks for an embryonic session */
60struct data_cb sess_conn_cb = {
61 .recv = NULL,
62 .send = NULL,
Willy Tarreau9683e9a2012-10-03 21:17:23 +020063 .wake = conn_session_update,
Willy Tarreau071e1372012-10-03 01:39:48 +020064 .init = conn_session_complete,
Willy Tarreau5e75e272012-10-02 21:21:20 +020065};
66
Willy Tarreau2542b532012-08-31 16:01:23 +020067/* This function is called from the protocol layer accept() in order to
68 * instanciate a new embryonic session on behalf of a given listener and
69 * frontend. It returns a positive value upon success, 0 if the connection
70 * can be ignored, or a negative value upon critical failure. The accepted
71 * file descriptor is closed if we return <= 0.
Willy Tarreau81f9aa32010-06-01 17:45:26 +020072 */
73int session_accept(struct listener *l, int cfd, struct sockaddr_storage *addr)
74{
75 struct proxy *p = l->frontend;
76 struct session *s;
Willy Tarreau81f9aa32010-06-01 17:45:26 +020077 struct task *t;
Willy Tarreauabe8ea52010-11-11 10:56:04 +010078 int ret;
79
80
81 ret = -1; /* assume unrecoverable error by default */
Willy Tarreau81f9aa32010-06-01 17:45:26 +020082
Willy Tarreaufffe1322010-11-11 09:48:16 +010083 if (unlikely((s = pool_alloc2(pool2_session)) == NULL))
Willy Tarreau81f9aa32010-06-01 17:45:26 +020084 goto out_close;
Willy Tarreau81f9aa32010-06-01 17:45:26 +020085
Willy Tarreauf2943dc2012-10-26 20:10:28 +020086 if (unlikely((s->si[0].conn = pool_alloc2(pool2_connection)) == NULL))
87 goto out_fail_conn0;
88
89 if (unlikely((s->si[1].conn = pool_alloc2(pool2_connection)) == NULL))
90 goto out_fail_conn1;
91
Willy Tarreau2542b532012-08-31 16:01:23 +020092 /* minimum session initialization required for an embryonic session is
93 * fairly low. We need very little to execute L4 ACLs, then we need a
94 * task to make the client-side connection live on its own.
95 * - flags
96 * - stick-entry tracking
97 */
Willy Tarreau81f9aa32010-06-01 17:45:26 +020098 s->flags = 0;
99 s->logs.logwait = p->to_log;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200100 s->logs.level = 0;
Willy Tarreaud5ca9ab2013-05-28 17:40:25 +0200101
102 memset(s->stkctr, 0, sizeof(s->stkctr));
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200103
Willy Tarreau2542b532012-08-31 16:01:23 +0200104 s->listener = l;
105 s->fe = p;
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100106
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200107 /* OK, we're keeping the session, so let's properly initialize the session */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200108 s->si[0].conn->t.sock.fd = cfd;
109 s->si[0].conn->ctrl = l->proto;
110 s->si[0].conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100111 s->si[0].conn->err_code = CO_ER_NONE;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200112 s->si[0].conn->addr.from = *addr;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100113 s->si[0].conn->target = &l->obj_type;
Willy Tarreau2542b532012-08-31 16:01:23 +0200114
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200115 s->logs.accept_date = date; /* user-visible date for logging */
116 s->logs.tv_accept = now; /* corrected date for internal use */
117 s->uniq_id = totalconn;
Willy Tarreau2542b532012-08-31 16:01:23 +0200118 p->feconn++;
119 /* This session was accepted, count it now */
120 if (p->feconn > p->fe_counters.conn_max)
121 p->fe_counters.conn_max = p->feconn;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200122
Willy Tarreau2542b532012-08-31 16:01:23 +0200123 proxy_inc_fe_conn_ctr(l, p);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200124
125 /* now evaluate the tcp-request layer4 rules. Since we expect to be able
126 * to abort right here as soon as possible, we check the rules before
127 * even initializing the stream interfaces.
128 */
129 if ((l->options & LI_O_TCP_RULES) && !tcp_exec_req_rules(s)) {
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200130 /* let's do a no-linger now to close with a single RST. */
131 setsockopt(cfd, SOL_SOCKET, SO_LINGER, (struct linger *) &nolinger, sizeof(struct linger));
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100132 ret = 0; /* successful termination */
Willy Tarreau2542b532012-08-31 16:01:23 +0200133 goto out_free_session;
134 }
135
Willy Tarreau1bc4aab2012-10-08 20:11:03 +0200136#ifndef USE_ACCEPT4
137 /* Adjust some socket options if the connection was accepted by a plain
138 * accept() syscall.
139 */
Willy Tarreau82569f92012-09-27 23:48:56 +0200140 if (unlikely(fcntl(cfd, F_SETFL, O_NONBLOCK) == -1))
141 goto out_free_session;
Willy Tarreau1bc4aab2012-10-08 20:11:03 +0200142#endif
Willy Tarreau82569f92012-09-27 23:48:56 +0200143
144 /* monitor-net and health mode are processed immediately after TCP
145 * connection rules. This way it's possible to block them, but they
146 * never use the lower data layers, they send directly over the socket,
147 * as they were designed for. We first flush the socket receive buffer
148 * in order to avoid emission of an RST by the system. We ignore any
149 * error.
150 */
151 if (unlikely((p->mode == PR_MODE_HEALTH) ||
152 ((l->options & LI_O_CHK_MONNET) &&
153 addr->ss_family == AF_INET &&
154 (((struct sockaddr_in *)addr)->sin_addr.s_addr & p->mon_mask.s_addr) == p->mon_net.s_addr))) {
155 /* we have 4 possibilities here :
156 * - HTTP mode, from monitoring address => send "HTTP/1.0 200 OK"
157 * - HEALTH mode with HTTP check => send "HTTP/1.0 200 OK"
158 * - HEALTH mode without HTTP check => just send "OK"
159 * - TCP mode from monitoring address => just close
160 */
Willy Tarreau2b57cb82013-06-10 19:56:38 +0200161 if (l->proto->drain)
162 l->proto->drain(cfd);
Willy Tarreau82569f92012-09-27 23:48:56 +0200163 if (p->mode == PR_MODE_HTTP ||
164 (p->mode == PR_MODE_HEALTH && (p->options2 & PR_O2_CHK_ANY) == PR_O2_HTTP_CHK))
165 send(cfd, "HTTP/1.0 200 OK\r\n\r\n", 19, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_MORE);
166 else if (p->mode == PR_MODE_HEALTH)
167 send(cfd, "OK\n", 3, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_MORE);
168 ret = 0;
169 goto out_free_session;
170 }
171
172
Willy Tarreau22cda212012-08-31 17:43:29 +0200173 /* wait for a PROXY protocol header */
174 if (l->options & LI_O_ACC_PROXY) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200175 s->si[0].conn->flags |= CO_FL_ACCEPT_PROXY;
176 conn_sock_want_recv(s->si[0].conn);
Willy Tarreau22cda212012-08-31 17:43:29 +0200177 }
178
Willy Tarreau2542b532012-08-31 16:01:23 +0200179 if (unlikely((t = task_new()) == NULL))
180 goto out_free_session;
181
182 t->context = s;
183 t->nice = l->nice;
184 s->task = t;
185
Willy Tarreauf7bc57c2012-10-03 00:19:48 +0200186 /* Add the various callbacks. Right now the transport layer is present
187 * but not initialized. Also note we need to be careful as the stream
188 * int is not initialized yet.
Willy Tarreau2542b532012-08-31 16:01:23 +0200189 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200190 conn_prepare(s->si[0].conn, &sess_conn_cb, l->proto, l->xprt, s);
Willy Tarreau2542b532012-08-31 16:01:23 +0200191
192 /* finish initialization of the accepted file descriptor */
193 fd_insert(cfd);
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200194 fdtab[cfd].owner = s->si[0].conn;
Willy Tarreau2542b532012-08-31 16:01:23 +0200195 fdtab[cfd].iocb = conn_fd_handler;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200196 conn_data_want_recv(s->si[0].conn);
197 if (conn_xprt_init(s->si[0].conn) < 0)
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100198 goto out_free_task;
Willy Tarreau2542b532012-08-31 16:01:23 +0200199
200 /* OK, now either we have a pending handshake to execute with and
201 * then we must return to the I/O layer, or we can proceed with the
202 * end of the session initialization. In case of handshake, we also
203 * set the I/O timeout to the frontend's client timeout.
204 */
205
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200206 if (s->si[0].conn->flags & CO_FL_HANDSHAKE) {
Willy Tarreau2542b532012-08-31 16:01:23 +0200207 t->process = expire_mini_session;
208 t->expire = tick_add_ifset(now_ms, p->timeout.client);
209 task_queue(t);
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200210 s->si[0].conn->flags |= CO_FL_INIT_DATA | CO_FL_WAKE_DATA;
Willy Tarreau2542b532012-08-31 16:01:23 +0200211 return 1;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200212 }
213
Willy Tarreau815f5ec2012-11-06 00:14:25 +0100214 /* OK let's complete session initialization since there is no handshake */
215 s->si[0].conn->flags |= CO_FL_CONNECTED;
Willy Tarreau2542b532012-08-31 16:01:23 +0200216 ret = session_complete(s);
217 if (ret > 0)
218 return ret;
219
220 /* Error unrolling */
221 out_free_task:
222 task_free(t);
223 out_free_session:
224 p->feconn--;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100225 if (s->stkctr[0].entry || s->stkctr[1].entry)
Willy Tarreau2542b532012-08-31 16:01:23 +0200226 session_store_counters(s);
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200227 pool_free2(pool2_connection, s->si[1].conn);
228 out_fail_conn1:
229 pool_free2(pool2_connection, s->si[0].conn);
230 out_fail_conn0:
Willy Tarreau2542b532012-08-31 16:01:23 +0200231 pool_free2(pool2_session, s);
232 out_close:
Willy Tarreauf7bc57c2012-10-03 00:19:48 +0200233 if (ret < 0 && l->xprt == &raw_sock && p->mode == PR_MODE_HTTP) {
Willy Tarreau2542b532012-08-31 16:01:23 +0200234 /* critical error, no more memory, try to emit a 500 response */
Willy Tarreau783f2582012-09-04 12:19:04 +0200235 struct chunk *err_msg = http_error_message(s, HTTP_ERR_500);
Willy Tarreau2542b532012-08-31 16:01:23 +0200236 send(cfd, err_msg->str, err_msg->len, MSG_DONTWAIT|MSG_NOSIGNAL);
237 }
238
239 if (fdtab[cfd].owner)
240 fd_delete(cfd);
241 else
242 close(cfd);
243 return ret;
244}
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100245
Willy Tarreau0af29122012-12-03 15:35:00 +0100246
247/* prepare the trash with a log prefix for session <s> */
248static void prepare_mini_sess_log_prefix(struct session *s)
249{
250 struct tm tm;
251 char pn[INET6_ADDRSTRLEN];
252 int ret;
253 char *end;
254
255 ret = addr_to_str(&s->si[0].conn->addr.from, pn, sizeof(pn));
256 if (ret <= 0)
257 chunk_printf(&trash, "unknown [");
258 else if (ret == AF_UNIX)
259 chunk_printf(&trash, "%s:%d [", pn, s->listener->luid);
260 else
261 chunk_printf(&trash, "%s:%d [", pn, get_host_port(&s->si[0].conn->addr.from));
262
263 get_localtime(s->logs.accept_date.tv_sec, &tm);
264 end = date2str_log(trash.str + trash.len, &tm, &(s->logs.accept_date), trash.size - trash.len);
265 trash.len = end - trash.str;
266 if (s->listener->name)
267 chunk_appendf(&trash, "] %s/%s", s->fe->id, s->listener->name);
268 else
269 chunk_appendf(&trash, "] %s/%d", s->fe->id, s->listener->luid);
270}
271
Willy Tarreau2542b532012-08-31 16:01:23 +0200272/* This function kills an existing embryonic session. It stops the connection's
Willy Tarreauf7bc57c2012-10-03 00:19:48 +0200273 * transport layer, releases assigned resources, resumes the listener if it was
Willy Tarreau2542b532012-08-31 16:01:23 +0200274 * disabled and finally kills the file descriptor.
275 */
276static void kill_mini_session(struct session *s)
277{
Willy Tarreau0af29122012-12-03 15:35:00 +0100278 int level = LOG_INFO;
279 struct connection *conn = s->si[0].conn;
280 unsigned int log = s->logs.logwait;
281 const char *err_msg;
282
283 if (s->fe->options2 & PR_O2_LOGERRORS)
284 level = LOG_ERR;
285
286 if (log && (s->fe->options & PR_O_NULLNOLOG)) {
287 /* with "option dontlognull", we don't log connections with no transfer */
Willy Tarreau8e3bf692012-12-03 15:41:18 +0100288 if (!conn->err_code ||
Willy Tarreau20879a02012-12-03 16:32:10 +0100289 conn->err_code == CO_ER_PRX_EMPTY || conn->err_code == CO_ER_PRX_ABORT ||
290 conn->err_code == CO_ER_SSL_EMPTY || conn->err_code == CO_ER_SSL_ABORT)
Willy Tarreau0af29122012-12-03 15:35:00 +0100291 log = 0;
292 }
293
294 if (log) {
295 if (!conn->err_code && (s->task->state & TASK_WOKEN_TIMER)) {
296 if (conn->flags & CO_FL_ACCEPT_PROXY)
297 conn->err_code = CO_ER_PRX_TIMEOUT;
298 else if (conn->flags & CO_FL_SSL_WAIT_HS)
299 conn->err_code = CO_ER_SSL_TIMEOUT;
300 }
301
302 prepare_mini_sess_log_prefix(s);
303 err_msg = conn_err_code_str(conn);
304 if (err_msg)
305 send_log(s->fe, level, "%s: %s\n", trash.str, err_msg);
306 else
307 send_log(s->fe, level, "%s: unknown connection error (code=%d flags=%08x)\n",
308 trash.str, conn->err_code, conn->flags);
309 }
310
Willy Tarreau2542b532012-08-31 16:01:23 +0200311 /* kill the connection now */
Willy Tarreau2b199c92012-11-23 17:32:21 +0100312 conn_full_close(s->si[0].conn);
Willy Tarreau2542b532012-08-31 16:01:23 +0200313
314 s->fe->feconn--;
Willy Tarreau7af7d592013-07-01 18:07:03 +0200315 session_store_counters(s);
Willy Tarreau2542b532012-08-31 16:01:23 +0200316
317 if (!(s->listener->options & LI_O_UNLIMITED))
318 actconn--;
319 jobs--;
320 s->listener->nbconn--;
321 if (s->listener->state == LI_FULL)
322 resume_listener(s->listener);
323
324 /* Dequeues all of the listeners waiting for a resource */
325 if (!LIST_ISEMPTY(&global_listener_queue))
326 dequeue_all_listeners(&global_listener_queue);
327
328 if (!LIST_ISEMPTY(&s->fe->listener_queue) &&
329 (!s->fe->fe_sps_lim || freq_ctr_remain(&s->fe->fe_sess_per_sec, s->fe->fe_sps_lim, 0) > 0))
330 dequeue_all_listeners(&s->fe->listener_queue);
331
332 task_delete(s->task);
333 task_free(s->task);
334
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200335 pool_free2(pool2_connection, s->si[1].conn);
336 pool_free2(pool2_connection, s->si[0].conn);
Willy Tarreau2542b532012-08-31 16:01:23 +0200337 pool_free2(pool2_session, s);
338}
339
Willy Tarreau22cda212012-08-31 17:43:29 +0200340/* Finish initializing a session from a connection, or kills it if the
341 * connection shows and error. Returns <0 if the connection was killed.
Willy Tarreau2542b532012-08-31 16:01:23 +0200342 */
Willy Tarreau071e1372012-10-03 01:39:48 +0200343static int conn_session_complete(struct connection *conn)
Willy Tarreau2542b532012-08-31 16:01:23 +0200344{
Willy Tarreau5e75e272012-10-02 21:21:20 +0200345 struct session *s = conn->owner;
Willy Tarreau2542b532012-08-31 16:01:23 +0200346
Willy Tarreau22cda212012-08-31 17:43:29 +0200347 if (!(conn->flags & CO_FL_ERROR) && (session_complete(s) > 0)) {
Willy Tarreau071e1372012-10-03 01:39:48 +0200348 conn->flags &= ~CO_FL_INIT_DATA;
Willy Tarreau2542b532012-08-31 16:01:23 +0200349 return 0;
350 }
351
352 /* kill the connection now */
353 kill_mini_session(s);
354 return -1;
355}
356
Willy Tarreau9683e9a2012-10-03 21:17:23 +0200357/* Update an embryonic session status. The connection is killed in case of
358 * error, and <0 will be returned. Otherwise it does nothing.
359 */
360static int conn_session_update(struct connection *conn)
361{
362 if (conn->flags & CO_FL_ERROR) {
363 kill_mini_session(conn->owner);
364 return -1;
365 }
366 return 0;
367}
368
Willy Tarreau2542b532012-08-31 16:01:23 +0200369/* Manages embryonic sessions timeout. It is only called when the timeout
370 * strikes and performs the required cleanup.
371 */
372static struct task *expire_mini_session(struct task *t)
373{
374 struct session *s = t->context;
375
376 if (!(t->state & TASK_WOKEN_TIMER))
377 return t;
378
379 kill_mini_session(s);
380 return NULL;
381}
382
383/* This function is called from the I/O handler which detects the end of
384 * handshake, in order to complete initialization of a valid session. It must
385 * be called with an embryonic session. It returns a positive value upon
386 * success, 0 if the connection can be ignored, or a negative value upon
387 * critical failure. The accepted file descriptor is closed if we return <= 0.
388 */
389int session_complete(struct session *s)
390{
391 struct listener *l = s->listener;
392 struct proxy *p = s->fe;
393 struct http_txn *txn;
394 struct task *t = s->task;
395 int ret;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100396 int i;
Willy Tarreau2542b532012-08-31 16:01:23 +0200397
398 ret = -1; /* assume unrecoverable error by default */
399
400 /* OK, we're keeping the session, so let's properly initialize the session */
401 LIST_ADDQ(&sessions, &s->list);
402 LIST_INIT(&s->back_refs);
Willy Tarreau5e75e272012-10-02 21:21:20 +0200403 si_takeover_conn(&s->si[0], l->proto, l->xprt);
Willy Tarreau2542b532012-08-31 16:01:23 +0200404 s->flags |= SN_INITIALIZED;
405
406 s->unique_id = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200407
408 t->process = l->handler;
409 t->context = s;
410 t->expire = TICK_ETERNITY;
411
412 /* Note: initially, the session's backend points to the frontend.
413 * This changes later when switching rules are executed or
414 * when the default backend is assigned.
415 */
416 s->be = s->fe;
417 s->req = s->rep = NULL; /* will be allocated later */
William Lallemand82fe75c2012-10-23 10:25:10 +0200418 s->comp_algo = NULL;
Willy Tarreau2542b532012-08-31 16:01:23 +0200419
420 /* Let's count a session now */
Willy Tarreaub36b4242010-06-04 20:59:39 +0200421 proxy_inc_fe_sess_ctr(l, p);
Willy Tarreau91c43d72010-06-20 11:19:22 +0200422
Willy Tarreaub4c84932013-07-23 19:15:30 +0200423 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau9e9879a2010-08-06 15:25:22 +0200424 void *ptr;
425
Willy Tarreau20d46a52012-12-09 15:55:40 +0100426 if (!s->stkctr[i].entry)
427 continue;
428
429 ptr = stktable_data_ptr(s->stkctr[i].table, s->stkctr[i].entry, STKTABLE_DT_SESS_CNT);
Willy Tarreau9e9879a2010-08-06 15:25:22 +0200430 if (ptr)
431 stktable_data_cast(ptr, sess_cnt)++;
432
Willy Tarreau20d46a52012-12-09 15:55:40 +0100433 ptr = stktable_data_ptr(s->stkctr[i].table, s->stkctr[i].entry, STKTABLE_DT_SESS_RATE);
Willy Tarreau9e9879a2010-08-06 15:25:22 +0200434 if (ptr)
435 update_freq_ctr_period(&stktable_data_cast(ptr, sess_rate),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100436 s->stkctr[i].table->data_arg[STKTABLE_DT_SESS_RATE].u, 1);
Willy Tarreau9e9879a2010-08-06 15:25:22 +0200437 }
438
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200439 /* this part should be common with other protocols */
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200440 s->si[0].owner = t;
441 s->si[0].state = s->si[0].prev_state = SI_ST_EST;
442 s->si[0].err_type = SI_ET_NONE;
443 s->si[0].err_loc = NULL;
Willy Tarreau0bd05ea2010-07-02 11:18:03 +0200444 s->si[0].release = NULL;
Willy Tarreau63e7fe32012-05-08 15:20:43 +0200445 s->si[0].send_proxy_ofs = 0;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200446 s->si[0].exp = TICK_ETERNITY;
447 s->si[0].flags = SI_FL_NONE;
448
449 if (likely(s->fe->options2 & PR_O2_INDEPSTR))
450 s->si[0].flags |= SI_FL_INDEP_STR;
451
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200452 /* pre-initialize the other side's stream interface to an INIT state. The
453 * callbacks will be initialized before attempting to connect.
454 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200455 s->si[1].conn->t.sock.fd = -1; /* just to help with debugging */
456 s->si[1].conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100457 s->si[1].conn->err_code = CO_ER_NONE;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200458 s->si[1].owner = t;
459 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
460 s->si[1].err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200461 s->si[1].conn_retries = 0; /* used for logging too */
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200462 s->si[1].err_loc = NULL;
Willy Tarreau0bd05ea2010-07-02 11:18:03 +0200463 s->si[1].release = NULL;
Willy Tarreau63e7fe32012-05-08 15:20:43 +0200464 s->si[1].send_proxy_ofs = 0;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100465 s->si[1].conn->target = NULL;
Willy Tarreauc5788912012-08-24 18:12:41 +0200466 si_prepare_embedded(&s->si[1]);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200467 s->si[1].exp = TICK_ETERNITY;
468 s->si[1].flags = SI_FL_NONE;
469
470 if (likely(s->fe->options2 & PR_O2_INDEPSTR))
471 s->si[1].flags |= SI_FL_INDEP_STR;
472
Willy Tarreau9bd0d742011-07-20 00:17:39 +0200473 session_init_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100474 s->target = NULL;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200475 s->pend_pos = NULL;
476
477 /* init store persistence */
478 s->store_count = 0;
479
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200480 if (unlikely((s->req = pool_alloc2(pool2_channel)) == NULL))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200481 goto out_free_task; /* no memory */
482
Willy Tarreau9b28e032012-10-12 23:49:43 +0200483 if (unlikely((s->req->buf = pool_alloc2(pool2_buffer)) == NULL))
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200484 goto out_free_req; /* no memory */
485
Willy Tarreau9b28e032012-10-12 23:49:43 +0200486 if (unlikely((s->rep = pool_alloc2(pool2_channel)) == NULL))
487 goto out_free_req_buf; /* no memory */
488
489 if (unlikely((s->rep->buf = pool_alloc2(pool2_buffer)) == NULL))
490 goto out_free_rep; /* no memory */
491
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200492 /* initialize the request buffer */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200493 s->req->buf->size = global.tune.bufsize;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200494 channel_init(s->req);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200495 s->req->prod = &s->si[0];
496 s->req->cons = &s->si[1];
497 s->si[0].ib = s->si[1].ob = s->req;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200498 s->req->flags |= CF_READ_ATTACHED; /* the producer is already connected */
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200499
500 /* activate default analysers enabled for this listener */
501 s->req->analysers = l->analysers;
502
503 s->req->wto = TICK_ETERNITY;
504 s->req->rto = TICK_ETERNITY;
505 s->req->rex = TICK_ETERNITY;
506 s->req->wex = TICK_ETERNITY;
507 s->req->analyse_exp = TICK_ETERNITY;
508
509 /* initialize response buffer */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200510 s->rep->buf->size = global.tune.bufsize;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200511 channel_init(s->rep);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200512 s->rep->prod = &s->si[1];
513 s->rep->cons = &s->si[0];
514 s->si[0].ob = s->si[1].ib = s->rep;
515 s->rep->analysers = 0;
516
Willy Tarreau96e31212011-05-30 18:10:30 +0200517 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200518 s->req->flags |= CF_NEVER_WAIT;
519 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200520 }
521
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200522 s->rep->rto = TICK_ETERNITY;
523 s->rep->wto = TICK_ETERNITY;
524 s->rep->rex = TICK_ETERNITY;
525 s->rep->wex = TICK_ETERNITY;
526 s->rep->analyse_exp = TICK_ETERNITY;
527
Willy Tarreau62f791e2012-03-09 11:32:30 +0100528 txn = &s->txn;
529 /* Those variables will be checked and freed if non-NULL in
530 * session.c:session_free(). It is important that they are
531 * properly initialized.
532 */
533 txn->sessid = NULL;
534 txn->srv_cookie = NULL;
535 txn->cli_cookie = NULL;
536 txn->uri = NULL;
537 txn->req.cap = NULL;
538 txn->rsp.cap = NULL;
539 txn->hdr_idx.v = NULL;
540 txn->hdr_idx.size = txn->hdr_idx.used = 0;
541 txn->req.flags = 0;
542 txn->rsp.flags = 0;
543 /* the HTTP messages need to know what buffer they're associated with */
Willy Tarreau394db372012-10-12 22:40:39 +0200544 txn->req.chn = s->req;
545 txn->rsp.chn = s->rep;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100546
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200547 /* finish initialization of the accepted file descriptor */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200548 conn_data_want_recv(s->si[0].conn);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200549
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100550 if (p->accept && (ret = p->accept(s)) <= 0) {
551 /* Either we had an unrecoverable error (<0) or work is
552 * finished (=0, eg: monitoring), in both situations,
553 * we can release everything and close.
554 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200555 goto out_free_rep_buf;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200556 }
557
Willy Tarreau93dbc2b2012-10-12 18:01:49 +0200558 /* if logs require transport layer information, note it on the connection */
559 if (s->logs.logwait & LW_XPRT)
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200560 s->si[0].conn->flags |= CO_FL_XPRT_TRACKED;
Willy Tarreau93dbc2b2012-10-12 18:01:49 +0200561
Willy Tarreau2542b532012-08-31 16:01:23 +0200562 /* we want the connection handler to notify the stream interface about updates. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200563 s->si[0].conn->flags |= CO_FL_WAKE_DATA;
Willy Tarreau2542b532012-08-31 16:01:23 +0200564
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200565 /* it is important not to call the wakeup function directly but to
566 * pass through task_wakeup(), because this one knows how to apply
567 * priorities to tasks.
568 */
569 task_wakeup(t, TASK_WOKEN_INIT);
570 return 1;
571
572 /* Error unrolling */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200573 out_free_rep_buf:
574 pool_free2(pool2_buffer, s->rep->buf);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200575 out_free_rep:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200576 pool_free2(pool2_channel, s->rep);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200577 out_free_req_buf:
578 pool_free2(pool2_buffer, s->req->buf);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200579 out_free_req:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200580 pool_free2(pool2_channel, s->req);
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200581 out_free_task:
Willy Tarreauabe8ea52010-11-11 10:56:04 +0100582 return ret;
Willy Tarreau81f9aa32010-06-01 17:45:26 +0200583}
584
Willy Tarreaubaaee002006-06-26 02:48:02 +0200585/*
586 * frees the context associated to a session. It must have been removed first.
587 */
Simon Hormandec5be42011-06-08 09:19:07 +0900588static void session_free(struct session *s)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200589{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100590 struct http_txn *txn = &s->txn;
Willy Tarreau632f5a72007-07-11 10:42:35 +0200591 struct proxy *fe = s->fe;
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100592 struct bref *bref, *back;
Willy Tarreaua4cda672010-06-06 18:28:49 +0200593 int i;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100594
Willy Tarreaubaaee002006-06-26 02:48:02 +0200595 if (s->pend_pos)
596 pendconn_free(s->pend_pos);
Willy Tarreau922a8062008-12-04 09:33:58 +0100597
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100598 if (objt_server(s->target)) { /* there may be requests left pending in queue */
Willy Tarreau1e62de62008-11-11 20:20:02 +0100599 if (s->flags & SN_CURR_SESS) {
600 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100601 objt_server(s->target)->cur_sess--;
Willy Tarreau1e62de62008-11-11 20:20:02 +0100602 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100603 if (may_dequeue_tasks(objt_server(s->target), s->be))
604 process_srv_queue(objt_server(s->target));
Willy Tarreau1e62de62008-11-11 20:20:02 +0100605 }
Willy Tarreau922a8062008-12-04 09:33:58 +0100606
Willy Tarreau7c669d72008-06-20 15:04:11 +0200607 if (unlikely(s->srv_conn)) {
608 /* the session still has a reserved slot on a server, but
609 * it should normally be only the same as the one above,
610 * so this should not happen in fact.
611 */
612 sess_change_server(s, NULL);
613 }
614
Willy Tarreau543db622012-11-15 16:41:22 +0100615 if (s->flags & SN_COMP_READY)
William Lallemand1c2d6222012-10-30 15:52:53 +0100616 s->comp_algo->end(&s->comp_ctx);
Willy Tarreau543db622012-11-15 16:41:22 +0100617 s->comp_algo = NULL;
618 s->flags &= ~SN_COMP_READY;
William Lallemand82fe75c2012-10-23 10:25:10 +0200619
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100620 if (s->req->pipe)
621 put_pipe(s->req->pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100622
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100623 if (s->rep->pipe)
624 put_pipe(s->rep->pipe);
Willy Tarreau259de1b2009-01-18 21:56:21 +0100625
Willy Tarreau9b28e032012-10-12 23:49:43 +0200626 pool_free2(pool2_buffer, s->req->buf);
627 pool_free2(pool2_buffer, s->rep->buf);
628
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200629 pool_free2(pool2_channel, s->req);
630 pool_free2(pool2_channel, s->rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200631
Willy Tarreau46023632010-01-07 22:51:47 +0100632 http_end_txn(s);
633
Willy Tarreau1e954912012-10-12 17:50:05 +0200634 /* ensure the client-side transport layer is destroyed */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200635 s->si[0].conn->flags &= ~CO_FL_XPRT_TRACKED;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100636 conn_full_close(s->si[0].conn);
Willy Tarreau1e954912012-10-12 17:50:05 +0200637
Willy Tarreaua4cda672010-06-06 18:28:49 +0200638 for (i = 0; i < s->store_count; i++) {
639 if (!s->store[i].ts)
640 continue;
641 stksess_free(s->store[i].table, s->store[i].ts);
642 s->store[i].ts = NULL;
643 }
644
Willy Tarreau34eb6712011-10-24 18:15:04 +0200645 pool_free2(pool2_hdr_idx, txn->hdr_idx.v);
Willy Tarreau92fb9832007-10-16 17:34:28 +0200646 if (fe) {
Willy Tarreau46023632010-01-07 22:51:47 +0100647 pool_free2(fe->rsp_cap_pool, txn->rsp.cap);
648 pool_free2(fe->req_cap_pool, txn->req.cap);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200649 }
Willy Tarreau0937bc42009-12-22 15:03:09 +0100650
Willy Tarreau7af7d592013-07-01 18:07:03 +0200651 session_store_counters(s);
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +0200652
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100653 list_for_each_entry_safe(bref, back, &s->back_refs, users) {
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100654 /* we have to unlink all watchers. We must not relink them if
655 * this session was the last one in the list.
656 */
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100657 LIST_DEL(&bref->users);
Willy Tarreaufd3828e2009-02-22 15:17:24 +0100658 LIST_INIT(&bref->users);
659 if (s->list.n != &sessions)
660 LIST_ADDQ(&LIST_ELEM(s->list.n, struct session *, list)->back_refs, &bref->users);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100661 bref->ref = s->list.n;
662 }
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100663 LIST_DEL(&s->list);
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200664 pool_free2(pool2_connection, s->si[1].conn);
665 pool_free2(pool2_connection, s->si[0].conn);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200666 pool_free2(pool2_session, s);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200667
668 /* We may want to free the maximum amount of pools if the proxy is stopping */
Willy Tarreau92fb9832007-10-16 17:34:28 +0200669 if (fe && unlikely(fe->state == PR_STSTOPPED)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200670 pool_flush2(pool2_buffer);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200671 pool_flush2(pool2_channel);
Willy Tarreau34eb6712011-10-24 18:15:04 +0200672 pool_flush2(pool2_hdr_idx);
Willy Tarreau48d63db2008-08-03 17:41:33 +0200673 pool_flush2(pool2_requri);
674 pool_flush2(pool2_capture);
675 pool_flush2(pool2_session);
676 pool_flush2(fe->req_cap_pool);
677 pool_flush2(fe->rsp_cap_pool);
Willy Tarreau632f5a72007-07-11 10:42:35 +0200678 }
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200679}
680
681
682/* perform minimal intializations, report 0 in case of error, 1 if OK. */
683int init_session()
684{
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100685 LIST_INIT(&sessions);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200686 pool2_session = create_pool("session", sizeof(struct session), MEM_F_SHARED);
687 return pool2_session != NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200688}
689
Willy Tarreau30e71012007-11-26 20:15:35 +0100690void session_process_counters(struct session *s)
691{
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100692 unsigned long long bytes;
Willy Tarreau20d46a52012-12-09 15:55:40 +0100693 void *ptr;
694 int i;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100695
Willy Tarreau30e71012007-11-26 20:15:35 +0100696 if (s->req) {
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100697 bytes = s->req->total - s->logs.bytes_in;
Willy Tarreau30e71012007-11-26 20:15:35 +0100698 s->logs.bytes_in = s->req->total;
699 if (bytes) {
Willy Tarreau20d46a52012-12-09 15:55:40 +0100700 s->fe->fe_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100701
Willy Tarreau20d46a52012-12-09 15:55:40 +0100702 s->be->be_counters.bytes_in += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100703
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100704 if (objt_server(s->target))
Willy Tarreau20d46a52012-12-09 15:55:40 +0100705 objt_server(s->target)->counters.bytes_in += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200706
707 if (s->listener->counters)
Willy Tarreau20d46a52012-12-09 15:55:40 +0100708 s->listener->counters->bytes_in += bytes;
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200709
Willy Tarreaub4c84932013-07-23 19:15:30 +0200710 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau20d46a52012-12-09 15:55:40 +0100711 if (!s->stkctr[i].entry)
712 continue;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200713
Willy Tarreau20d46a52012-12-09 15:55:40 +0100714 ptr = stktable_data_ptr(s->stkctr[i].table,
715 s->stkctr[i].entry,
716 STKTABLE_DT_BYTES_IN_CNT);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200717 if (ptr)
718 stktable_data_cast(ptr, bytes_in_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200719
Willy Tarreau20d46a52012-12-09 15:55:40 +0100720 ptr = stktable_data_ptr(s->stkctr[i].table,
721 s->stkctr[i].entry,
722 STKTABLE_DT_BYTES_IN_RATE);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200723 if (ptr)
724 update_freq_ctr_period(&stktable_data_cast(ptr, bytes_in_rate),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100725 s->stkctr[i].table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200726 }
Willy Tarreau30e71012007-11-26 20:15:35 +0100727 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100728 }
729
Willy Tarreau30e71012007-11-26 20:15:35 +0100730 if (s->rep) {
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100731 bytes = s->rep->total - s->logs.bytes_out;
Willy Tarreau30e71012007-11-26 20:15:35 +0100732 s->logs.bytes_out = s->rep->total;
733 if (bytes) {
Willy Tarreau20d46a52012-12-09 15:55:40 +0100734 s->fe->fe_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100735
Willy Tarreau20d46a52012-12-09 15:55:40 +0100736 s->be->be_counters.bytes_out += bytes;
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100737
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100738 if (objt_server(s->target))
Willy Tarreau20d46a52012-12-09 15:55:40 +0100739 objt_server(s->target)->counters.bytes_out += bytes;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200740
741 if (s->listener->counters)
Willy Tarreau20d46a52012-12-09 15:55:40 +0100742 s->listener->counters->bytes_out += bytes;
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200743
Willy Tarreaub4c84932013-07-23 19:15:30 +0200744 for (i = 0; i < MAX_SESS_STKCTR; i++) {
Willy Tarreau20d46a52012-12-09 15:55:40 +0100745 if (!s->stkctr[i].entry)
746 continue;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200747
Willy Tarreau20d46a52012-12-09 15:55:40 +0100748 ptr = stktable_data_ptr(s->stkctr[i].table,
749 s->stkctr[i].entry,
750 STKTABLE_DT_BYTES_OUT_CNT);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200751 if (ptr)
752 stktable_data_cast(ptr, bytes_out_cnt) += bytes;
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200753
Willy Tarreau20d46a52012-12-09 15:55:40 +0100754 ptr = stktable_data_ptr(s->stkctr[i].table,
755 s->stkctr[i].entry,
756 STKTABLE_DT_BYTES_OUT_RATE);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +0200757 if (ptr)
758 update_freq_ctr_period(&stktable_data_cast(ptr, bytes_out_rate),
Willy Tarreau20d46a52012-12-09 15:55:40 +0100759 s->stkctr[i].table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u, bytes);
Willy Tarreau855e4bb2010-06-18 18:33:32 +0200760 }
Willy Tarreau30e71012007-11-26 20:15:35 +0100761 }
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100762 }
763}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200764
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100765/* This function is called with (si->state == SI_ST_CON) meaning that a
766 * connection was attempted and that the file descriptor is already allocated.
767 * We must check for establishment, error and abort. Possible output states
768 * are SI_ST_EST (established), SI_ST_CER (error), SI_ST_DIS (abort), and
769 * SI_ST_CON (no change). The function returns 0 if it switches to SI_ST_CER,
770 * otherwise 1.
771 */
Simon Hormandec5be42011-06-08 09:19:07 +0900772static int sess_update_st_con_tcp(struct session *s, struct stream_interface *si)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100773{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200774 struct channel *req = si->ob;
775 struct channel *rep = si->ib;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100776
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100777 /* If we got an error, or if nothing happened and the connection timed
778 * out, we must give up. The CER state handler will take care of retry
779 * attempts and error reports.
780 */
781 if (unlikely(si->flags & (SI_FL_EXP|SI_FL_ERR))) {
Willy Tarreaue3224e82012-10-29 22:41:31 +0100782 if (unlikely(si->ob->flags & CF_WRITE_PARTIAL)) {
783 /* Some data were sent past the connection establishment,
784 * so we need to pretend we're established to log correctly
785 * and let later states handle the failure.
786 */
787 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
788 si->exp = TICK_ETERNITY;
789 si->state = SI_ST_EST;
790 si->err_type = SI_ET_DATA_ERR;
791 si->ib->flags |= CF_READ_ERROR | CF_WRITE_ERROR;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100792 si->err_loc = objt_server(s->target);
Willy Tarreaue3224e82012-10-29 22:41:31 +0100793 return 1;
794 }
Willy Tarreau127334e2009-03-28 10:47:26 +0100795 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100796 si->state = SI_ST_CER;
Willy Tarreau0ede5a32012-12-08 08:44:02 +0100797
798 si->conn->flags &= ~CO_FL_XPRT_TRACKED;
799 conn_full_close(si->conn);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100800
Willy Tarreau0bd05ea2010-07-02 11:18:03 +0200801 if (si->release)
802 si->release(si);
803
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100804 if (si->err_type)
805 return 0;
806
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100807 si->err_loc = objt_server(s->target);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100808 if (si->flags & SI_FL_ERR)
809 si->err_type = SI_ET_CONN_ERR;
810 else
811 si->err_type = SI_ET_CONN_TO;
812 return 0;
813 }
814
815 /* OK, maybe we want to abort */
Willy Tarreaua7a7ebc2012-12-30 00:50:35 +0100816 if (!(req->flags & CF_WRITE_PARTIAL) &&
817 unlikely((rep->flags & CF_SHUTW) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200818 ((req->flags & CF_SHUTW_NOW) && /* FIXME: this should not prevent a connection from establishing */
819 ((!(req->flags & CF_WRITE_ACTIVITY) && channel_is_empty(req)) ||
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100820 s->be->options & PR_O_ABRT_CLOSE)))) {
821 /* give up */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200822 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100823 si->err_type |= SI_ET_CONN_ABRT;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100824 si->err_loc = objt_server(s->target);
Willy Tarreau84455332009-03-15 22:34:05 +0100825 if (s->srv_error)
826 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100827 return 1;
828 }
829
830 /* we need to wait a bit more if there was no activity either */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200831 if (!(req->flags & CF_WRITE_ACTIVITY))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100832 return 1;
833
834 /* OK, this means that a connection succeeded. The caller will be
835 * responsible for handling the transition from CON to EST.
836 */
837 s->logs.t_connect = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau127334e2009-03-28 10:47:26 +0100838 si->exp = TICK_ETERNITY;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100839 si->state = SI_ST_EST;
840 si->err_type = SI_ET_NONE;
841 si->err_loc = NULL;
842 return 1;
843}
844
845/* This function is called with (si->state == SI_ST_CER) meaning that a
846 * previous connection attempt has failed and that the file descriptor
847 * has already been released. Possible causes include asynchronous error
848 * notification and time out. Possible output states are SI_ST_CLO when
849 * retries are exhausted, SI_ST_TAR when a delay is wanted before a new
850 * connection attempt, SI_ST_ASS when it's wise to retry on the same server,
851 * and SI_ST_REQ when an immediate redispatch is wanted. The buffers are
852 * marked as in error state. It returns 0.
853 */
Simon Hormandec5be42011-06-08 09:19:07 +0900854static int sess_update_st_cer(struct session *s, struct stream_interface *si)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100855{
856 /* we probably have to release last session from the server */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100857 if (objt_server(s->target)) {
858 health_adjust(objt_server(s->target), HANA_STATUS_L4_ERR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100859
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100860 if (s->flags & SN_CURR_SESS) {
861 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100862 objt_server(s->target)->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100863 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100864 }
865
866 /* ensure that we have enough retries left */
Willy Tarreauee28de02010-06-01 09:51:00 +0200867 si->conn_retries--;
868 if (si->conn_retries < 0) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100869 if (!si->err_type) {
870 si->err_type = SI_ET_CONN_ERR;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100871 si->err_loc = objt_server(s->target);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100872 }
873
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100874 if (objt_server(s->target))
875 objt_server(s->target)->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100876 s->be->be_counters.failed_conns++;
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100877 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100878 if (may_dequeue_tasks(objt_server(s->target), s->be))
879 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100880
881 /* shutw is enough so stop a connecting socket */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200882 si_shutw(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200883 si->ob->flags |= CF_WRITE_ERROR;
884 si->ib->flags |= CF_READ_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100885
886 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100887 if (s->srv_error)
888 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100889 return 0;
890 }
891
892 /* If the "redispatch" option is set on the backend, we are allowed to
893 * retry on another server for the last retry. In order to achieve this,
894 * we must mark the session unassigned, and eventually clear the DIRECT
895 * bit to ignore any persistence cookie. We won't count a retry nor a
896 * redispatch yet, because this will depend on what server is selected.
897 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100898 if (objt_server(s->target) && si->conn_retries == 0 &&
Willy Tarreau4de91492010-01-22 19:10:05 +0100899 s->be->options & PR_O_REDISP && !(s->flags & SN_FORCE_PRST)) {
Willy Tarreaub89cfca2010-12-29 14:32:28 +0100900 sess_change_server(s, NULL);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100901 if (may_dequeue_tasks(objt_server(s->target), s->be))
902 process_srv_queue(objt_server(s->target));
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100903
904 s->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100905 si->state = SI_ST_REQ;
906 } else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100907 if (objt_server(s->target))
908 objt_server(s->target)->counters.retries++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100909 s->be->be_counters.retries++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100910 si->state = SI_ST_ASS;
911 }
912
913 if (si->flags & SI_FL_ERR) {
914 /* The error was an asynchronous connection error, and we will
915 * likely have to retry connecting to the same server, most
916 * likely leading to the same result. To avoid this, we wait
917 * one second before retrying.
918 */
919
920 if (!si->err_type)
921 si->err_type = SI_ET_CONN_ERR;
922
923 si->state = SI_ST_TAR;
924 si->exp = tick_add(now_ms, MS_TO_TICKS(1000));
925 return 0;
926 }
927 return 0;
928}
929
930/*
931 * This function handles the transition between the SI_ST_CON state and the
Willy Tarreau85e7d002010-05-31 11:57:51 +0200932 * SI_ST_EST state. It must only be called after switching from SI_ST_CON (or
Willy Tarreau26d8c592012-05-07 18:12:14 +0200933 * SI_ST_INI) to SI_ST_EST, but only when a ->proto is defined.
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100934 */
Simon Hormandec5be42011-06-08 09:19:07 +0900935static void sess_establish(struct session *s, struct stream_interface *si)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100936{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200937 struct channel *req = si->ob;
938 struct channel *rep = si->ib;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100939
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100940 if (objt_server(s->target))
941 health_adjust(objt_server(s->target), HANA_STATUS_L4_OK);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100942
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100943 if (s->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100944 /* if the user wants to log as soon as possible, without counting
945 * bytes from the server, then this is the right moment. */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100946 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100947 s->logs.t_close = s->logs.t_connect; /* to get a valid end date */
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100948 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100949 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100950 }
951 else {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100952 s->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
953 /* reset hdr_idx which was already initialized by the request.
954 * right now, the http parser does it.
955 * hdr_idx_init(&s->txn.hdr_idx);
956 */
957 }
958
Willy Tarreau4e5b8282009-08-16 22:57:50 +0200959 rep->analysers |= s->fe->fe_rsp_ana | s->be->be_rsp_ana;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200960 rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200961 if (si_ctrl(si)) {
Willy Tarreaud04e8582010-05-31 12:31:35 +0200962 /* real connections have timeouts */
963 req->wto = s->be->timeout.server;
964 rep->rto = s->be->timeout.server;
965 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100966 req->wex = TICK_ETERNITY;
967}
968
969/* Update stream interface status for input states SI_ST_ASS, SI_ST_QUE, SI_ST_TAR.
970 * Other input states are simply ignored.
971 * Possible output states are SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ, SI_ST_CON.
972 * Flags must have previously been updated for timeouts and other conditions.
973 */
Simon Hormandec5be42011-06-08 09:19:07 +0900974static void sess_update_stream_int(struct session *s, struct stream_interface *si)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100975{
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100976 struct server *srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100977
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100978 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 +0100979 now_ms, __FUNCTION__,
980 s,
981 s->req, s->rep,
982 s->req->rex, s->rep->wex,
983 s->req->flags, s->rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200984 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 +0100985
986 if (si->state == SI_ST_ASS) {
987 /* Server assigned to connection request, we have to try to connect now */
988 int conn_err;
989
990 conn_err = connect_server(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100991 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100992
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100993 if (conn_err == SN_ERR_NONE) {
994 /* state = SI_ST_CON now */
Willy Tarreau827aee92011-03-10 16:55:02 +0100995 if (srv)
996 srv_inc_sess_ctr(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100997 return;
998 }
999
1000 /* We have received a synchronous error. We might have to
1001 * abort, retry immediately or redispatch.
1002 */
1003 if (conn_err == SN_ERR_INTERNAL) {
1004 if (!si->err_type) {
1005 si->err_type = SI_ET_CONN_OTHER;
Willy Tarreau827aee92011-03-10 16:55:02 +01001006 si->err_loc = srv;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001007 }
1008
Willy Tarreau827aee92011-03-10 16:55:02 +01001009 if (srv)
1010 srv_inc_sess_ctr(srv);
1011 if (srv)
1012 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001013 s->be->be_counters.failed_conns++;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001014
1015 /* release other sessions waiting for this server */
Willy Tarreaub89cfca2010-12-29 14:32:28 +01001016 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001017 if (may_dequeue_tasks(srv, s->be))
1018 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001019
1020 /* Failed and not retryable. */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001021 si_shutr(si);
1022 si_shutw(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001023 si->ob->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001024
1025 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1026
1027 /* no session was ever accounted for this server */
1028 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001029 if (s->srv_error)
1030 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001031 return;
1032 }
1033
1034 /* We are facing a retryable error, but we don't want to run a
1035 * turn-around now, as the problem is likely a source port
1036 * allocation problem, so we want to retry now.
1037 */
1038 si->state = SI_ST_CER;
1039 si->flags &= ~SI_FL_ERR;
1040 sess_update_st_cer(s, si);
1041 /* now si->state is one of SI_ST_CLO, SI_ST_TAR, SI_ST_ASS, SI_ST_REQ */
1042 return;
1043 }
1044 else if (si->state == SI_ST_QUE) {
1045 /* connection request was queued, check for any update */
1046 if (!s->pend_pos) {
1047 /* The connection is not in the queue anymore. Either
1048 * we have a server connection slot available and we
1049 * go directly to the assigned state, or we need to
1050 * load-balance first and go to the INI state.
1051 */
1052 si->exp = TICK_ETERNITY;
1053 if (unlikely(!(s->flags & SN_ASSIGNED)))
1054 si->state = SI_ST_REQ;
1055 else {
1056 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1057 si->state = SI_ST_ASS;
1058 }
1059 return;
1060 }
1061
1062 /* Connection request still in queue... */
1063 if (si->flags & SI_FL_EXP) {
1064 /* ... and timeout expired */
1065 si->exp = TICK_ETERNITY;
1066 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau827aee92011-03-10 16:55:02 +01001067 if (srv)
1068 srv->counters.failed_conns++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001069 s->be->be_counters.failed_conns++;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001070 si_shutr(si);
1071 si_shutw(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001072 si->ob->flags |= CF_WRITE_TIMEOUT;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001073 if (!si->err_type)
1074 si->err_type = SI_ET_QUEUE_TO;
1075 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001076 if (s->srv_error)
1077 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001078 return;
1079 }
1080
1081 /* Connection remains in queue, check if we have to abort it */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001082 if ((si->ob->flags & (CF_READ_ERROR)) ||
1083 ((si->ob->flags & CF_SHUTW_NOW) && /* empty and client aborted */
Willy Tarreau8e21bb92012-08-24 22:40:29 +02001084 (channel_is_empty(si->ob) || s->be->options & PR_O_ABRT_CLOSE))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001085 /* give up */
1086 si->exp = TICK_ETERNITY;
1087 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau73b013b2012-05-21 16:31:45 +02001088 si_shutr(si);
1089 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001090 si->err_type |= SI_ET_QUEUE_ABRT;
1091 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001092 if (s->srv_error)
1093 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001094 return;
1095 }
1096
1097 /* Nothing changed */
1098 return;
1099 }
1100 else if (si->state == SI_ST_TAR) {
1101 /* Connection request might be aborted */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001102 if ((si->ob->flags & (CF_READ_ERROR)) ||
1103 ((si->ob->flags & CF_SHUTW_NOW) && /* empty and client aborted */
Willy Tarreau8e21bb92012-08-24 22:40:29 +02001104 (channel_is_empty(si->ob) || s->be->options & PR_O_ABRT_CLOSE))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001105 /* give up */
1106 si->exp = TICK_ETERNITY;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001107 si_shutr(si);
1108 si_shutw(si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001109 si->err_type |= SI_ET_CONN_ABRT;
1110 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001111 if (s->srv_error)
1112 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001113 return;
1114 }
1115
1116 if (!(si->flags & SI_FL_EXP))
1117 return; /* still in turn-around */
1118
1119 si->exp = TICK_ETERNITY;
1120
1121 /* we keep trying on the same server as long as the session is
1122 * marked "assigned".
1123 * FIXME: Should we force a redispatch attempt when the server is down ?
1124 */
1125 if (s->flags & SN_ASSIGNED)
1126 si->state = SI_ST_ASS;
1127 else
1128 si->state = SI_ST_REQ;
1129 return;
1130 }
1131}
1132
Simon Hormandec5be42011-06-08 09:19:07 +09001133/* Set correct session termination flags in case no analyser has done it. It
1134 * also counts a failed request if the server state has not reached the request
1135 * stage.
1136 */
1137static void sess_set_term_flags(struct session *s)
1138{
1139 if (!(s->flags & SN_FINST_MASK)) {
1140 if (s->si[1].state < SI_ST_REQ) {
1141
1142 s->fe->fe_counters.failed_req++;
1143 if (s->listener->counters)
1144 s->listener->counters->failed_req++;
1145
1146 s->flags |= SN_FINST_R;
1147 }
1148 else if (s->si[1].state == SI_ST_QUE)
1149 s->flags |= SN_FINST_Q;
1150 else if (s->si[1].state < SI_ST_EST)
1151 s->flags |= SN_FINST_C;
1152 else if (s->si[1].state == SI_ST_EST || s->si[1].prev_state == SI_ST_EST)
1153 s->flags |= SN_FINST_D;
1154 else
1155 s->flags |= SN_FINST_L;
1156 }
1157}
1158
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001159/* This function initiates a server connection request on a stream interface
1160 * already in SI_ST_REQ state. Upon success, the state goes to SI_ST_ASS,
1161 * indicating that a server has been assigned. It may also return SI_ST_QUE,
1162 * or SI_ST_CLO upon error.
1163 */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001164static void sess_prepare_conn_req(struct session *s, struct stream_interface *si)
1165{
1166 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 +01001167 now_ms, __FUNCTION__,
1168 s,
1169 s->req, s->rep,
1170 s->req->rex, s->rep->wex,
1171 s->req->flags, s->rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001172 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 +01001173
1174 if (si->state != SI_ST_REQ)
1175 return;
1176
1177 /* Try to assign a server */
1178 if (srv_redispatch_connect(s) != 0) {
1179 /* We did not get a server. Either we queued the
1180 * connection request, or we encountered an error.
1181 */
1182 if (si->state == SI_ST_QUE)
1183 return;
1184
1185 /* we did not get any server, let's check the cause */
Willy Tarreau73b013b2012-05-21 16:31:45 +02001186 si_shutr(si);
1187 si_shutw(si);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001188 si->ob->flags |= CF_WRITE_ERROR;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001189 if (!si->err_type)
1190 si->err_type = SI_ET_CONN_OTHER;
1191 si->state = SI_ST_CLO;
Willy Tarreau0cac36f2008-11-30 20:44:17 +01001192 if (s->srv_error)
1193 s->srv_error(s, si);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001194 return;
1195 }
1196
1197 /* The server is assigned */
1198 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
1199 si->state = SI_ST_ASS;
1200}
1201
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001202/* This stream analyser checks the switching rules and changes the backend
Willy Tarreau4de91492010-01-22 19:10:05 +01001203 * if appropriate. The default_backend rule is also considered, then the
1204 * target backend's forced persistence rules are also evaluated last if any.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001205 * It returns 1 if the processing can continue on next analysers, or zero if it
1206 * either needs more data or wants to immediately abort the request.
1207 */
Willy Tarreau7421efb2012-07-02 15:11:27 +02001208static int process_switching_rules(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001209{
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001210 struct persist_rule *prst_rule;
Willy Tarreau4de91492010-01-22 19:10:05 +01001211
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001212 req->analysers &= ~an_bit;
1213 req->analyse_exp = TICK_ETERNITY;
1214
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001215 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 +02001216 now_ms, __FUNCTION__,
1217 s,
1218 req,
1219 req->rex, req->wex,
1220 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001221 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001222 req->analysers);
1223
1224 /* now check whether we have some switching rules for this request */
1225 if (!(s->flags & SN_BE_ASSIGNED)) {
1226 struct switching_rule *rule;
1227
1228 list_for_each_entry(rule, &s->fe->switching_rules, list) {
1229 int ret;
1230
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001231 ret = acl_exec_cond(rule->cond, s->fe, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001232 ret = acl_pass(ret);
1233 if (rule->cond->pol == ACL_COND_UNLESS)
1234 ret = !ret;
1235
1236 if (ret) {
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001237 if (!session_set_backend(s, rule->be.backend))
1238 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001239 break;
1240 }
1241 }
1242
1243 /* To ensure correct connection accounting on the backend, we
1244 * have to assign one if it was not set (eg: a listen). This
1245 * measure also takes care of correctly setting the default
1246 * backend if any.
1247 */
1248 if (!(s->flags & SN_BE_ASSIGNED))
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001249 if (!session_set_backend(s, s->fe->defbe.be ? s->fe->defbe.be : s->be))
1250 goto sw_failed;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001251 }
1252
Willy Tarreaufb356202010-08-03 14:02:05 +02001253 /* we don't want to run the TCP or HTTP filters again if the backend has not changed */
1254 if (s->fe == s->be) {
1255 s->req->analysers &= ~AN_REQ_INSPECT_BE;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001256 s->req->analysers &= ~AN_REQ_HTTP_PROCESS_BE;
Willy Tarreaufb356202010-08-03 14:02:05 +02001257 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001258
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001259 /* 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 +01001260 * persistence rule, and report that in the session.
1261 */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001262 list_for_each_entry(prst_rule, &s->be->persist_rules, list) {
Willy Tarreau4de91492010-01-22 19:10:05 +01001263 int ret = 1;
1264
1265 if (prst_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001266 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 +01001267 ret = acl_pass(ret);
1268 if (prst_rule->cond->pol == ACL_COND_UNLESS)
1269 ret = !ret;
1270 }
1271
1272 if (ret) {
1273 /* no rule, or the rule matches */
Cyril Bonté47fdd8e2010-04-25 00:00:51 +02001274 if (prst_rule->type == PERSIST_TYPE_FORCE) {
1275 s->flags |= SN_FORCE_PRST;
1276 } else {
1277 s->flags |= SN_IGNORE_PRST;
1278 }
Willy Tarreau4de91492010-01-22 19:10:05 +01001279 break;
1280 }
1281 }
1282
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001283 return 1;
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001284
1285 sw_failed:
1286 /* immediately abort this request in case of allocation failure */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001287 channel_abort(s->req);
1288 channel_abort(s->rep);
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001289
1290 if (!(s->flags & SN_ERR_MASK))
1291 s->flags |= SN_ERR_RESOURCE;
1292 if (!(s->flags & SN_FINST_MASK))
1293 s->flags |= SN_FINST_R;
1294
1295 s->txn.status = 500;
1296 s->req->analysers = 0;
1297 s->req->analyse_exp = TICK_ETERNITY;
1298 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001299}
1300
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001301/* This stream analyser works on a request. It applies all use-server rules on
1302 * it then returns 1. The data must already be present in the buffer otherwise
1303 * they won't match. It always returns 1.
1304 */
Willy Tarreau7421efb2012-07-02 15:11:27 +02001305static int process_server_rules(struct session *s, struct channel *req, int an_bit)
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001306{
1307 struct proxy *px = s->be;
1308 struct server_rule *rule;
1309
1310 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
1311 now_ms, __FUNCTION__,
1312 s,
1313 req,
1314 req->rex, req->wex,
1315 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001316 req->buf->i + req->buf->o,
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001317 req->analysers);
1318
1319 if (!(s->flags & SN_ASSIGNED)) {
1320 list_for_each_entry(rule, &px->server_rules, list) {
1321 int ret;
1322
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001323 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 +02001324 ret = acl_pass(ret);
1325 if (rule->cond->pol == ACL_COND_UNLESS)
1326 ret = !ret;
1327
1328 if (ret) {
1329 struct server *srv = rule->srv.ptr;
1330
1331 if ((srv->state & SRV_RUNNING) ||
1332 (px->options & PR_O_PERSIST) ||
1333 (s->flags & SN_FORCE_PRST)) {
1334 s->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001335 s->target = &srv->obj_type;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001336 break;
1337 }
1338 /* if the server is not UP, let's go on with next rules
1339 * just in case another one is suited.
1340 */
1341 }
1342 }
1343 }
1344
1345 req->analysers &= ~an_bit;
1346 req->analyse_exp = TICK_ETERNITY;
1347 return 1;
1348}
1349
Emeric Brun1d33b292010-01-04 15:47:17 +01001350/* This stream analyser works on a request. It applies all sticking rules on
1351 * it then returns 1. The data must already be present in the buffer otherwise
1352 * they won't match. It always returns 1.
1353 */
Willy Tarreau7421efb2012-07-02 15:11:27 +02001354static int process_sticking_rules(struct session *s, struct channel *req, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001355{
1356 struct proxy *px = s->be;
1357 struct sticking_rule *rule;
1358
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001359 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 +01001360 now_ms, __FUNCTION__,
1361 s,
1362 req,
1363 req->rex, req->wex,
1364 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001365 req->buf->i,
Emeric Brun1d33b292010-01-04 15:47:17 +01001366 req->analysers);
1367
1368 list_for_each_entry(rule, &px->sticking_rules, list) {
1369 int ret = 1 ;
1370 int i;
1371
1372 for (i = 0; i < s->store_count; i++) {
1373 if (rule->table.t == s->store[i].table)
1374 break;
1375 }
1376
1377 if (i != s->store_count)
1378 continue;
1379
1380 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001381 ret = acl_exec_cond(rule->cond, px, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001382 ret = acl_pass(ret);
1383 if (rule->cond->pol == ACL_COND_UNLESS)
1384 ret = !ret;
1385 }
1386
1387 if (ret) {
1388 struct stktable_key *key;
1389
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001390 key = stktable_fetch_key(rule->table.t, px, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->expr);
Emeric Brun1d33b292010-01-04 15:47:17 +01001391 if (!key)
1392 continue;
1393
1394 if (rule->flags & STK_IS_MATCH) {
1395 struct stksess *ts;
1396
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001397 if ((ts = stktable_lookup_key(rule->table.t, key)) != NULL) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001398 if (!(s->flags & SN_ASSIGNED)) {
1399 struct eb32_node *node;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001400 void *ptr;
Emeric Brun1d33b292010-01-04 15:47:17 +01001401
1402 /* srv found in table */
Willy Tarreau13c29de2010-06-06 16:40:39 +02001403 ptr = stktable_data_ptr(rule->table.t, ts, STKTABLE_DT_SERVER_ID);
1404 node = eb32_lookup(&px->conf.used_server_id, stktable_data_cast(ptr, server_id));
Emeric Brun1d33b292010-01-04 15:47:17 +01001405 if (node) {
1406 struct server *srv;
1407
1408 srv = container_of(node, struct server, conf.id);
Willy Tarreau4de91492010-01-22 19:10:05 +01001409 if ((srv->state & SRV_RUNNING) ||
1410 (px->options & PR_O_PERSIST) ||
1411 (s->flags & SN_FORCE_PRST)) {
Emeric Brun1d33b292010-01-04 15:47:17 +01001412 s->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001413 s->target = &srv->obj_type;
Emeric Brun1d33b292010-01-04 15:47:17 +01001414 }
1415 }
1416 }
Emeric Brun85e77c72010-09-23 18:16:52 +02001417 stktable_touch(rule->table.t, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001418 }
1419 }
1420 if (rule->flags & STK_IS_STORE) {
1421 if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1422 struct stksess *ts;
1423
1424 ts = stksess_new(rule->table.t, key);
1425 if (ts) {
1426 s->store[s->store_count].table = rule->table.t;
1427 s->store[s->store_count++].ts = ts;
1428 }
1429 }
1430 }
1431 }
1432 }
1433
1434 req->analysers &= ~an_bit;
1435 req->analyse_exp = TICK_ETERNITY;
1436 return 1;
1437}
1438
1439/* This stream analyser works on a response. It applies all store rules on it
1440 * then returns 1. The data must already be present in the buffer otherwise
1441 * they won't match. It always returns 1.
1442 */
Willy Tarreau7421efb2012-07-02 15:11:27 +02001443static int process_store_rules(struct session *s, struct channel *rep, int an_bit)
Emeric Brun1d33b292010-01-04 15:47:17 +01001444{
1445 struct proxy *px = s->be;
1446 struct sticking_rule *rule;
1447 int i;
1448
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001449 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 +01001450 now_ms, __FUNCTION__,
1451 s,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001452 rep,
1453 rep->rex, rep->wex,
1454 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001455 rep->buf->i,
Willy Tarreau2e2b3eb2010-02-09 20:55:44 +01001456 rep->analysers);
Emeric Brun1d33b292010-01-04 15:47:17 +01001457
1458 list_for_each_entry(rule, &px->storersp_rules, list) {
1459 int ret = 1 ;
1460 int storereqidx = -1;
1461
1462 for (i = 0; i < s->store_count; i++) {
1463 if (rule->table.t == s->store[i].table) {
1464 if (!(s->store[i].flags))
1465 storereqidx = i;
1466 break;
1467 }
1468 }
1469
1470 if ((i != s->store_count) && (storereqidx == -1))
1471 continue;
1472
1473 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001474 ret = acl_exec_cond(rule->cond, px, s, &s->txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Emeric Brun1d33b292010-01-04 15:47:17 +01001475 ret = acl_pass(ret);
1476 if (rule->cond->pol == ACL_COND_UNLESS)
1477 ret = !ret;
1478 }
1479
1480 if (ret) {
1481 struct stktable_key *key;
1482
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001483 key = stktable_fetch_key(rule->table.t, px, s, &s->txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL, rule->expr);
Emeric Brun1d33b292010-01-04 15:47:17 +01001484 if (!key)
1485 continue;
1486
1487 if (storereqidx != -1) {
Willy Tarreau393379c2010-06-06 12:11:37 +02001488 stksess_setkey(s->store[storereqidx].table, s->store[storereqidx].ts, key);
Emeric Brun1d33b292010-01-04 15:47:17 +01001489 s->store[storereqidx].flags = 1;
1490 }
1491 else if (s->store_count < (sizeof(s->store) / sizeof(s->store[0]))) {
1492 struct stksess *ts;
1493
1494 ts = stksess_new(rule->table.t, key);
1495 if (ts) {
1496 s->store[s->store_count].table = rule->table.t;
1497 s->store[s->store_count].flags = 1;
1498 s->store[s->store_count++].ts = ts;
1499 }
1500 }
1501 }
1502 }
1503
1504 /* process store request and store response */
1505 for (i = 0; i < s->store_count; i++) {
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001506 struct stksess *ts;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001507 void *ptr;
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001508
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001509 if (objt_server(s->target) && objt_server(s->target)->state & SRV_NON_STICK) {
Simon Hormanfa461682011-06-25 09:39:49 +09001510 stksess_free(s->store[i].table, s->store[i].ts);
1511 s->store[i].ts = NULL;
1512 continue;
1513 }
1514
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001515 ts = stktable_lookup(s->store[i].table, s->store[i].ts);
1516 if (ts) {
1517 /* the entry already existed, we can free ours */
Emeric Brun85e77c72010-09-23 18:16:52 +02001518 stktable_touch(s->store[i].table, ts, 1);
Emeric Brun1d33b292010-01-04 15:47:17 +01001519 stksess_free(s->store[i].table, s->store[i].ts);
Emeric Brun1d33b292010-01-04 15:47:17 +01001520 }
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001521 else
Emeric Brun85e77c72010-09-23 18:16:52 +02001522 ts = stktable_store(s->store[i].table, s->store[i].ts, 1);
Willy Tarreauf16d2b82010-06-06 15:38:59 +02001523
1524 s->store[i].ts = NULL;
Willy Tarreau13c29de2010-06-06 16:40:39 +02001525 ptr = stktable_data_ptr(s->store[i].table, ts, STKTABLE_DT_SERVER_ID);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001526 stktable_data_cast(ptr, server_id) = objt_server(s->target)->puid;
Emeric Brun1d33b292010-01-04 15:47:17 +01001527 }
Willy Tarreau2a164ee2010-06-18 09:57:45 +02001528 s->store_count = 0; /* everything is stored */
Emeric Brun1d33b292010-01-04 15:47:17 +01001529
1530 rep->analysers &= ~an_bit;
1531 rep->analyse_exp = TICK_ETERNITY;
1532 return 1;
1533}
1534
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001535/* This macro is very specific to the function below. See the comments in
1536 * process_session() below to understand the logic and the tests.
1537 */
1538#define UPDATE_ANALYSERS(real, list, back, flag) { \
1539 list = (((list) & ~(flag)) | ~(back)) & (real); \
1540 back = real; \
1541 if (!(list)) \
1542 break; \
1543 if (((list) ^ ((list) & ((list) - 1))) < (flag)) \
1544 continue; \
1545}
1546
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001547/* Processes the client, server, request and response jobs of a session task,
1548 * then puts it back to the wait queue in a clean state, or cleans up its
1549 * resources if it must be deleted. Returns in <next> the date the task wants
1550 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
1551 * nothing too many times, the request and response buffers flags are monitored
1552 * and each function is called only if at least another function has changed at
1553 * least one flag it is interested in.
1554 */
Willy Tarreau26c25062009-03-08 09:38:41 +01001555struct task *process_session(struct task *t)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001556{
Willy Tarreau827aee92011-03-10 16:55:02 +01001557 struct server *srv;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001558 struct session *s = t->context;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001559 unsigned int rqf_last, rpf_last;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001560 unsigned int rq_prod_last, rq_cons_last;
1561 unsigned int rp_cons_last, rp_prod_last;
Willy Tarreau576507f2010-01-07 00:09:04 +01001562 unsigned int req_ana_back;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001563
1564 //DPRINTF(stderr, "%s:%d: cs=%d ss=%d(%d) rqf=0x%08x rpf=0x%08x\n", __FUNCTION__, __LINE__,
1565 // s->si[0].state, s->si[1].state, s->si[1].err_type, s->req->flags, s->rep->flags);
1566
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01001567 /* this data may be no longer valid, clear it */
1568 memset(&s->txn.auth, 0, sizeof(s->txn.auth));
1569
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001570 /* This flag must explicitly be set every time */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001571 s->req->flags &= ~CF_READ_NOEXP;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001572
1573 /* Keep a copy of req/rep flags so that we can detect shutdowns */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001574 rqf_last = s->req->flags & ~CF_MASK_ANALYSER;
1575 rpf_last = s->rep->flags & ~CF_MASK_ANALYSER;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001576
Willy Tarreau89f7ef22009-09-05 20:57:35 +02001577 /* we don't want the stream interface functions to recursively wake us up */
1578 if (s->req->prod->owner == t)
1579 s->req->prod->flags |= SI_FL_DONT_WAKE;
1580 if (s->req->cons->owner == t)
1581 s->req->cons->flags |= SI_FL_DONT_WAKE;
1582
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001583 /* 1a: Check for low level timeouts if needed. We just set a flag on
1584 * stream interfaces when their timeouts have expired.
1585 */
1586 if (unlikely(t->state & TASK_WOKEN_TIMER)) {
1587 stream_int_check_timeouts(&s->si[0]);
1588 stream_int_check_timeouts(&s->si[1]);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001589
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001590 /* check channel timeouts, and close the corresponding stream interfaces
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001591 * for future reads or writes. Note: this will also concern upper layers
1592 * but we do not touch any other flag. We must be careful and correctly
1593 * detect state changes when calling them.
1594 */
1595
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001596 channel_check_timeouts(s->req);
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001597
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001598 if (unlikely((s->req->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
Willy Tarreau14641402009-12-29 14:49:56 +01001599 s->req->cons->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001600 si_shutw(s->req->cons);
Willy Tarreau14641402009-12-29 14:49:56 +01001601 }
1602
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001603 if (unlikely((s->req->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001604 if (s->req->prod->flags & SI_FL_NOHALF)
1605 s->req->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001606 si_shutr(s->req->prod);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001607 }
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001608
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001609 channel_check_timeouts(s->rep);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001610
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001611 if (unlikely((s->rep->flags & (CF_SHUTW|CF_WRITE_TIMEOUT)) == CF_WRITE_TIMEOUT)) {
Willy Tarreau14641402009-12-29 14:49:56 +01001612 s->rep->cons->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001613 si_shutw(s->rep->cons);
Willy Tarreau14641402009-12-29 14:49:56 +01001614 }
1615
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001616 if (unlikely((s->rep->flags & (CF_SHUTR|CF_READ_TIMEOUT)) == CF_READ_TIMEOUT)) {
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001617 if (s->rep->prod->flags & SI_FL_NOHALF)
1618 s->rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02001619 si_shutr(s->rep->prod);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02001620 }
Willy Tarreau798f4322012-11-08 14:49:17 +01001621
1622 /* Once in a while we're woken up because the task expires. But
1623 * this does not necessarily mean that a timeout has been reached.
1624 * So let's not run a whole session processing if only an expiration
1625 * timeout needs to be refreshed.
1626 */
1627 if (!((s->req->flags | s->rep->flags) &
1628 (CF_SHUTR|CF_READ_ACTIVITY|CF_READ_TIMEOUT|CF_SHUTW|
1629 CF_WRITE_ACTIVITY|CF_WRITE_TIMEOUT|CF_ANA_TIMEOUT)) &&
1630 !((s->si[0].flags | s->si[1].flags) & (SI_FL_EXP|SI_FL_ERR)) &&
1631 ((t->state & TASK_WOKEN_ANY) == TASK_WOKEN_TIMER))
1632 goto update_exp_and_leave;
Willy Tarreaub67a9b82009-06-21 22:03:51 +02001633 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001634
1635 /* 1b: check for low-level errors reported at the stream interface.
1636 * First we check if it's a retryable error (in which case we don't
1637 * want to tell the buffer). Otherwise we report the error one level
1638 * upper by setting flags into the buffers. Note that the side towards
1639 * the client cannot have connect (hence retryable) errors. Also, the
1640 * connection setup code must be able to deal with any type of abort.
1641 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001642 srv = objt_server(s->target);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001643 if (unlikely(s->si[0].flags & SI_FL_ERR)) {
1644 if (s->si[0].state == SI_ST_EST || s->si[0].state == SI_ST_DIS) {
Willy Tarreau73b013b2012-05-21 16:31:45 +02001645 si_shutr(&s->si[0]);
1646 si_shutw(&s->si[0]);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001647 stream_int_report_error(&s->si[0]);
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001648 if (!(s->req->analysers) && !(s->rep->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001649 s->be->be_counters.cli_aborts++;
1650 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001651 if (srv)
1652 srv->counters.cli_aborts++;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001653 if (!(s->flags & SN_ERR_MASK))
1654 s->flags |= SN_ERR_CLICL;
1655 if (!(s->flags & SN_FINST_MASK))
1656 s->flags |= SN_FINST_D;
1657 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001658 }
1659 }
1660
1661 if (unlikely(s->si[1].flags & SI_FL_ERR)) {
1662 if (s->si[1].state == SI_ST_EST || s->si[1].state == SI_ST_DIS) {
Willy Tarreau73b013b2012-05-21 16:31:45 +02001663 si_shutr(&s->si[1]);
1664 si_shutw(&s->si[1]);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001665 stream_int_report_error(&s->si[1]);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001666 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001667 if (srv)
1668 srv->counters.failed_resp++;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001669 if (!(s->req->analysers) && !(s->rep->analysers)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01001670 s->be->be_counters.srv_aborts++;
1671 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01001672 if (srv)
1673 srv->counters.srv_aborts++;
Willy Tarreau05cb29b2008-12-14 11:44:04 +01001674 if (!(s->flags & SN_ERR_MASK))
1675 s->flags |= SN_ERR_SRVCL;
1676 if (!(s->flags & SN_FINST_MASK))
1677 s->flags |= SN_FINST_D;
1678 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001679 }
1680 /* note: maybe we should process connection errors here ? */
1681 }
1682
1683 if (s->si[1].state == SI_ST_CON) {
1684 /* we were trying to establish a connection on the server side,
1685 * maybe it succeeded, maybe it failed, maybe we timed out, ...
1686 */
1687 if (unlikely(!sess_update_st_con_tcp(s, &s->si[1])))
1688 sess_update_st_cer(s, &s->si[1]);
1689 else if (s->si[1].state == SI_ST_EST)
1690 sess_establish(s, &s->si[1]);
1691
1692 /* state is now one of SI_ST_CON (still in progress), SI_ST_EST
1693 * (established), SI_ST_DIS (abort), SI_ST_CLO (last error),
1694 * SI_ST_ASS/SI_ST_TAR/SI_ST_REQ for retryable errors.
1695 */
1696 }
1697
Willy Tarreau815a9b22010-07-27 17:15:12 +02001698 rq_prod_last = s->si[0].state;
1699 rq_cons_last = s->si[1].state;
1700 rp_cons_last = s->si[0].state;
1701 rp_prod_last = s->si[1].state;
1702
1703 resync_stream_interface:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001704 /* Check for connection closure */
1705
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001706 DPRINTF(stderr,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +01001707 "[%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 +01001708 now_ms, __FUNCTION__, __LINE__,
1709 t,
1710 s, s->flags,
1711 s->req, s->rep,
1712 s->req->rex, s->rep->wex,
1713 s->req->flags, s->rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +02001714 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 +01001715 s->rep->cons->err_type, s->req->cons->err_type,
Willy Tarreauee28de02010-06-01 09:51:00 +02001716 s->req->cons->conn_retries);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001717
1718 /* nothing special to be done on client side */
1719 if (unlikely(s->req->prod->state == SI_ST_DIS))
1720 s->req->prod->state = SI_ST_CLO;
1721
1722 /* When a server-side connection is released, we have to count it and
1723 * check for pending connections on this server.
1724 */
1725 if (unlikely(s->req->cons->state == SI_ST_DIS)) {
1726 s->req->cons->state = SI_ST_CLO;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001727 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01001728 if (srv) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001729 if (s->flags & SN_CURR_SESS) {
1730 s->flags &= ~SN_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +01001731 srv->cur_sess--;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001732 }
1733 sess_change_server(s, NULL);
Willy Tarreau827aee92011-03-10 16:55:02 +01001734 if (may_dequeue_tasks(srv, s->be))
1735 process_srv_queue(srv);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001736 }
1737 }
1738
1739 /*
1740 * Note: of the transient states (REQ, CER, DIS), only REQ may remain
1741 * at this point.
1742 */
1743
Willy Tarreau0be0ef92009-03-08 19:20:25 +01001744 resync_request:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001745 /* Analyse request */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001746 if (((s->req->flags & ~rqf_last) & CF_MASK_ANALYSER) ||
1747 ((s->req->flags ^ rqf_last) & CF_MASK_STATIC) ||
Willy Tarreau815a9b22010-07-27 17:15:12 +02001748 s->si[0].state != rq_prod_last ||
1749 s->si[1].state != rq_cons_last) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001750 unsigned int flags = s->req->flags;
1751
1752 if (s->req->prod->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001753 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001754 unsigned int ana_list;
1755 unsigned int ana_back;
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001756
Willy Tarreau90deb182010-01-07 00:20:41 +01001757 /* it's up to the analysers to stop new connections,
1758 * disable reading or closing. Note: if an analyser
1759 * disables any of these bits, it is responsible for
1760 * enabling them again when it disables itself, so
1761 * that other analysers are called in similar conditions.
1762 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001763 channel_auto_read(s->req);
1764 channel_auto_connect(s->req);
1765 channel_auto_close(s->req);
Willy Tarreauedcf6682008-11-30 23:15:34 +01001766
1767 /* We will call all analysers for which a bit is set in
1768 * s->req->analysers, following the bit order from LSB
1769 * to MSB. The analysers must remove themselves from
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001770 * the list when not needed. Any analyser may return 0
1771 * to break out of the loop, either because of missing
1772 * data to take a decision, or because it decides to
1773 * kill the session. We loop at least once through each
1774 * analyser, and we may loop again if other analysers
1775 * are added in the middle.
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001776 *
1777 * We build a list of analysers to run. We evaluate all
1778 * of these analysers in the order of the lower bit to
1779 * the higher bit. This ordering is very important.
1780 * An analyser will often add/remove other analysers,
1781 * including itself. Any changes to itself have no effect
1782 * on the loop. If it removes any other analysers, we
1783 * want those analysers not to be called anymore during
1784 * this loop. If it adds an analyser that is located
1785 * after itself, we want it to be scheduled for being
1786 * processed during the loop. If it adds an analyser
1787 * which is located before it, we want it to switch to
1788 * it immediately, even if it has already been called
1789 * once but removed since.
1790 *
1791 * In order to achieve this, we compare the analyser
1792 * list after the call with a copy of it before the
1793 * call. The work list is fed with analyser bits that
1794 * appeared during the call. Then we compare previous
1795 * work list with the new one, and check the bits that
1796 * appeared. If the lowest of these bits is lower than
1797 * the current bit, it means we have enabled a previous
1798 * analyser and must immediately loop again.
Willy Tarreauedcf6682008-11-30 23:15:34 +01001799 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001800
1801 ana_list = ana_back = s->req->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001802 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001803 /* Warning! ensure that analysers are always placed in ascending order! */
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001804
Willy Tarreaufb356202010-08-03 14:02:05 +02001805 if (ana_list & AN_REQ_INSPECT_FE) {
1806 if (!tcp_inspect_request(s, s->req, AN_REQ_INSPECT_FE))
Willy Tarreauedcf6682008-11-30 23:15:34 +01001807 break;
Willy Tarreaufb356202010-08-03 14:02:05 +02001808 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_INSPECT_FE);
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001809 }
Willy Tarreauedcf6682008-11-30 23:15:34 +01001810
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001811 if (ana_list & AN_REQ_WAIT_HTTP) {
Willy Tarreau3a816292009-07-07 10:55:49 +02001812 if (!http_wait_for_request(s, s->req, AN_REQ_WAIT_HTTP))
Willy Tarreaud787e662009-07-07 10:14:51 +02001813 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001814 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_WAIT_HTTP);
Willy Tarreaud787e662009-07-07 10:14:51 +02001815 }
1816
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001817 if (ana_list & AN_REQ_HTTP_PROCESS_FE) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001818 if (!http_process_req_common(s, s->req, AN_REQ_HTTP_PROCESS_FE, s->fe))
1819 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001820 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_PROCESS_FE);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001821 }
1822
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001823 if (ana_list & AN_REQ_SWITCHING_RULES) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001824 if (!process_switching_rules(s, s->req, AN_REQ_SWITCHING_RULES))
1825 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001826 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_SWITCHING_RULES);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001827 }
1828
Willy Tarreaufb356202010-08-03 14:02:05 +02001829 if (ana_list & AN_REQ_INSPECT_BE) {
1830 if (!tcp_inspect_request(s, s->req, AN_REQ_INSPECT_BE))
1831 break;
1832 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_INSPECT_BE);
1833 }
1834
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001835 if (ana_list & AN_REQ_HTTP_PROCESS_BE) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001836 if (!http_process_req_common(s, s->req, AN_REQ_HTTP_PROCESS_BE, s->be))
1837 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001838 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_PROCESS_BE);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001839 }
1840
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001841 if (ana_list & AN_REQ_HTTP_TARPIT) {
Willy Tarreau3a816292009-07-07 10:55:49 +02001842 if (!http_process_tarpit(s, s->req, AN_REQ_HTTP_TARPIT))
Willy Tarreau60b85b02008-11-30 23:28:40 +01001843 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001844 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_TARPIT);
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001845 }
Willy Tarreau60b85b02008-11-30 23:28:40 +01001846
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001847 if (ana_list & AN_REQ_SRV_RULES) {
1848 if (!process_server_rules(s, s->req, AN_REQ_SRV_RULES))
1849 break;
1850 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_SRV_RULES);
1851 }
1852
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001853 if (ana_list & AN_REQ_HTTP_INNER) {
Willy Tarreauc465fd72009-08-31 00:17:18 +02001854 if (!http_process_request(s, s->req, AN_REQ_HTTP_INNER))
1855 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001856 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_INNER);
Willy Tarreauc465fd72009-08-31 00:17:18 +02001857 }
1858
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001859 if (ana_list & AN_REQ_HTTP_BODY) {
Willy Tarreau3a816292009-07-07 10:55:49 +02001860 if (!http_process_request_body(s, s->req, AN_REQ_HTTP_BODY))
Willy Tarreaud34af782008-11-30 23:36:37 +01001861 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001862 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_BODY);
Willy Tarreau1a52dbd2009-06-28 19:37:53 +02001863 }
Emeric Brun647caf12009-06-30 17:57:00 +02001864
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001865 if (ana_list & AN_REQ_PRST_RDP_COOKIE) {
Emeric Brun647caf12009-06-30 17:57:00 +02001866 if (!tcp_persist_rdp_cookie(s, s->req, AN_REQ_PRST_RDP_COOKIE))
1867 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001868 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_PRST_RDP_COOKIE);
Emeric Brun647caf12009-06-30 17:57:00 +02001869 }
Willy Tarreaud98cf932009-12-27 22:54:55 +01001870
Emeric Brun1d33b292010-01-04 15:47:17 +01001871 if (ana_list & AN_REQ_STICKING_RULES) {
1872 if (!process_sticking_rules(s, s->req, AN_REQ_STICKING_RULES))
1873 break;
1874 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_STICKING_RULES);
1875 }
1876
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001877 if (ana_list & AN_REQ_HTTP_XFER_BODY) {
Willy Tarreaud98cf932009-12-27 22:54:55 +01001878 if (!http_request_forward_body(s, s->req, AN_REQ_HTTP_XFER_BODY))
1879 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001880 UPDATE_ANALYSERS(s->req->analysers, ana_list, ana_back, AN_REQ_HTTP_XFER_BODY);
Willy Tarreaud98cf932009-12-27 22:54:55 +01001881 }
Willy Tarreaue34070e2010-01-08 00:32:27 +01001882 break;
1883 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01001884 }
Willy Tarreau84455332009-03-15 22:34:05 +01001885
Willy Tarreau815a9b22010-07-27 17:15:12 +02001886 rq_prod_last = s->si[0].state;
1887 rq_cons_last = s->si[1].state;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001888 s->req->flags &= ~CF_WAKE_ONCE;
Willy Tarreau815a9b22010-07-27 17:15:12 +02001889 rqf_last = s->req->flags;
1890
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001891 if ((s->req->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001892 goto resync_request;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001893 }
1894
Willy Tarreau576507f2010-01-07 00:09:04 +01001895 /* we'll monitor the request analysers while parsing the response,
1896 * because some response analysers may indirectly enable new request
1897 * analysers (eg: HTTP keep-alive).
1898 */
1899 req_ana_back = s->req->analysers;
1900
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001901 resync_response:
1902 /* Analyse response */
1903
Willy Tarreaub31c9712012-11-11 23:05:39 +01001904 if (((s->rep->flags & ~rpf_last) & CF_MASK_ANALYSER) ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001905 (s->rep->flags ^ rpf_last) & CF_MASK_STATIC ||
Willy Tarreau815a9b22010-07-27 17:15:12 +02001906 s->si[0].state != rp_cons_last ||
1907 s->si[1].state != rp_prod_last) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001908 unsigned int flags = s->rep->flags;
1909
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001910 if ((s->rep->flags & CF_MASK_ANALYSER) &&
Willy Tarreau0499e352010-12-17 07:13:42 +01001911 (s->rep->analysers & AN_REQ_WAIT_HTTP)) {
1912 /* Due to HTTP pipelining, the HTTP request analyser might be waiting
1913 * for some free space in the response buffer, so we might need to call
1914 * it when something changes in the response buffer, but still we pass
1915 * it the request buffer. Note that the SI state might very well still
1916 * be zero due to us returning a flow of redirects!
1917 */
1918 s->rep->analysers &= ~AN_REQ_WAIT_HTTP;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001919 s->req->flags |= CF_WAKE_ONCE;
Willy Tarreau0499e352010-12-17 07:13:42 +01001920 }
1921
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001922 if (s->rep->prod->state >= SI_ST_EST) {
Willy Tarreaue34070e2010-01-08 00:32:27 +01001923 int max_loops = global.tune.maxpollevents;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001924 unsigned int ana_list;
1925 unsigned int ana_back;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001926
Willy Tarreau90deb182010-01-07 00:20:41 +01001927 /* it's up to the analysers to stop disable reading or
1928 * closing. Note: if an analyser disables any of these
1929 * bits, it is responsible for enabling them again when
1930 * it disables itself, so that other analysers are called
1931 * in similar conditions.
1932 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001933 channel_auto_read(s->rep);
1934 channel_auto_close(s->rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001935
1936 /* We will call all analysers for which a bit is set in
1937 * s->rep->analysers, following the bit order from LSB
1938 * to MSB. The analysers must remove themselves from
1939 * the list when not needed. Any analyser may return 0
1940 * to break out of the loop, either because of missing
1941 * data to take a decision, or because it decides to
1942 * kill the session. We loop at least once through each
1943 * analyser, and we may loop again if other analysers
1944 * are added in the middle.
1945 */
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001946
1947 ana_list = ana_back = s->rep->analysers;
Willy Tarreaue34070e2010-01-08 00:32:27 +01001948 while (ana_list && max_loops--) {
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001949 /* Warning! ensure that analysers are always placed in ascending order! */
1950
Emeric Brun97679e72010-09-23 17:56:44 +02001951 if (ana_list & AN_RES_INSPECT) {
1952 if (!tcp_inspect_response(s, s->rep, AN_RES_INSPECT))
1953 break;
1954 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_INSPECT);
1955 }
1956
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001957 if (ana_list & AN_RES_WAIT_HTTP) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001958 if (!http_wait_for_response(s, s->rep, AN_RES_WAIT_HTTP))
1959 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001960 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_WAIT_HTTP);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001961 }
1962
Emeric Brun1d33b292010-01-04 15:47:17 +01001963 if (ana_list & AN_RES_STORE_RULES) {
1964 if (!process_store_rules(s, s->rep, AN_RES_STORE_RULES))
1965 break;
1966 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_STORE_RULES);
1967 }
1968
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001969 if (ana_list & AN_RES_HTTP_PROCESS_BE) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001970 if (!http_process_res_common(s, s->rep, AN_RES_HTTP_PROCESS_BE, s->be))
1971 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001972 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_HTTP_PROCESS_BE);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02001973 }
Willy Tarreaud98cf932009-12-27 22:54:55 +01001974
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001975 if (ana_list & AN_RES_HTTP_XFER_BODY) {
Willy Tarreaud98cf932009-12-27 22:54:55 +01001976 if (!http_response_forward_body(s, s->rep, AN_RES_HTTP_XFER_BODY))
1977 break;
Willy Tarreau1e0bbaf2010-01-06 23:53:24 +01001978 UPDATE_ANALYSERS(s->rep->analysers, ana_list, ana_back, AN_RES_HTTP_XFER_BODY);
Willy Tarreaud98cf932009-12-27 22:54:55 +01001979 }
Willy Tarreaue34070e2010-01-08 00:32:27 +01001980 break;
1981 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001982 }
1983
Willy Tarreau815a9b22010-07-27 17:15:12 +02001984 rp_cons_last = s->si[0].state;
1985 rp_prod_last = s->si[1].state;
1986 rpf_last = s->rep->flags;
1987
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001988 if ((s->rep->flags ^ flags) & CF_MASK_STATIC)
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001989 goto resync_response;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001990 }
1991
Willy Tarreau576507f2010-01-07 00:09:04 +01001992 /* maybe someone has added some request analysers, so we must check and loop */
1993 if (s->req->analysers & ~req_ana_back)
1994 goto resync_request;
1995
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02001996 if ((s->req->flags & ~rqf_last) & CF_MASK_ANALYSER)
Willy Tarreau0499e352010-12-17 07:13:42 +01001997 goto resync_request;
1998
Willy Tarreau3deb3d02009-06-21 22:43:05 +02001999 /* FIXME: here we should call protocol handlers which rely on
2000 * both buffers.
2001 */
2002
2003
2004 /*
Willy Tarreauae526782010-03-04 20:34:23 +01002005 * Now we propagate unhandled errors to the session. Normally
2006 * we're just in a data phase here since it means we have not
2007 * seen any analyser who could set an error status.
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002008 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002009 srv = objt_server(s->target);
Willy Tarreau2f976e12010-11-11 14:28:47 +01002010 if (unlikely(!(s->flags & SN_ERR_MASK))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002011 if (s->req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002012 /* Report it if the client got an error or a read timeout expired */
Willy Tarreau84455332009-03-15 22:34:05 +01002013 s->req->analysers = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002014 if (s->req->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002015 s->be->be_counters.cli_aborts++;
2016 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002017 if (srv)
2018 srv->counters.cli_aborts++;
Willy Tarreau84455332009-03-15 22:34:05 +01002019 s->flags |= SN_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002020 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002021 else if (s->req->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002022 s->be->be_counters.cli_aborts++;
2023 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002024 if (srv)
2025 srv->counters.cli_aborts++;
Willy Tarreau84455332009-03-15 22:34:05 +01002026 s->flags |= SN_ERR_CLITO;
Willy Tarreauae526782010-03-04 20:34:23 +01002027 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002028 else if (s->req->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002029 s->be->be_counters.srv_aborts++;
2030 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002031 if (srv)
2032 srv->counters.srv_aborts++;
Willy Tarreau84455332009-03-15 22:34:05 +01002033 s->flags |= SN_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002034 }
2035 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002036 s->be->be_counters.srv_aborts++;
2037 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002038 if (srv)
2039 srv->counters.srv_aborts++;
Willy Tarreau84455332009-03-15 22:34:05 +01002040 s->flags |= SN_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002041 }
Willy Tarreau84455332009-03-15 22:34:05 +01002042 sess_set_term_flags(s);
2043 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002044 else if (s->rep->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) {
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002045 /* Report it if the server got an error or a read timeout expired */
2046 s->rep->analysers = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002047 if (s->rep->flags & CF_READ_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002048 s->be->be_counters.srv_aborts++;
2049 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002050 if (srv)
2051 srv->counters.srv_aborts++;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002052 s->flags |= SN_ERR_SRVCL;
Willy Tarreauae526782010-03-04 20:34:23 +01002053 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002054 else if (s->rep->flags & CF_READ_TIMEOUT) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002055 s->be->be_counters.srv_aborts++;
2056 s->fe->fe_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002057 if (srv)
2058 srv->counters.srv_aborts++;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002059 s->flags |= SN_ERR_SRVTO;
Willy Tarreauae526782010-03-04 20:34:23 +01002060 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002061 else if (s->rep->flags & CF_WRITE_ERROR) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002062 s->be->be_counters.cli_aborts++;
2063 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002064 if (srv)
2065 srv->counters.cli_aborts++;
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002066 s->flags |= SN_ERR_CLICL;
Willy Tarreauae526782010-03-04 20:34:23 +01002067 }
2068 else {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002069 s->be->be_counters.cli_aborts++;
2070 s->fe->fe_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +01002071 if (srv)
2072 srv->counters.cli_aborts++;
Willy Tarreauae526782010-03-04 20:34:23 +01002073 s->flags |= SN_ERR_CLITO;
2074 }
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002075 sess_set_term_flags(s);
2076 }
Willy Tarreau84455332009-03-15 22:34:05 +01002077 }
2078
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002079 /*
2080 * Here we take care of forwarding unhandled data. This also includes
2081 * connection establishments and shutdown requests.
2082 */
2083
2084
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002085 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002086 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002087 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002088 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002089 */
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002090 if (!s->req->analysers &&
Willy Tarreaub31c9712012-11-11 23:05:39 +01002091 !(s->req->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau31971e52009-09-20 12:07:52 +02002092 (s->req->prod->state >= SI_ST_EST) &&
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002093 (s->req->to_forward != CHN_INFINITE_FORWARD)) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002094 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002095 * attached to it. If any data are left in, we'll permit them to
2096 * move.
2097 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002098 channel_auto_read(s->req);
2099 channel_auto_connect(s->req);
2100 channel_auto_close(s->req);
Willy Tarreau9b28e032012-10-12 23:49:43 +02002101 buffer_flush(s->req->buf);
Willy Tarreau5bd8c372009-01-19 00:32:22 +01002102
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002103 /* We'll let data flow between the producer (if still connected)
2104 * to the consumer (which might possibly not be connected yet).
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002105 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002106 if (!(s->req->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002107 channel_forward(s->req, CHN_INFINITE_FORWARD);
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002108 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002109
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002110 /* check if it is wise to enable kernel splicing to forward request data */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002111 if (!(s->req->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002112 s->req->to_forward &&
2113 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreauf2943dc2012-10-26 20:10:28 +02002114 (s->si[0].conn->xprt && s->si[0].conn->xprt->rcv_pipe && s->si[0].conn->xprt->snd_pipe) &&
2115 (s->si[1].conn->xprt && s->si[1].conn->xprt->rcv_pipe && s->si[1].conn->xprt->snd_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002116 (pipes_used < global.maxpipes) &&
2117 (((s->fe->options2|s->be->options2) & PR_O2_SPLIC_REQ) ||
2118 (((s->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002119 (s->req->flags & CF_STREAMER_FAST)))) {
2120 s->req->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002121 }
2122
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002123 /* reflect what the L7 analysers have seen last */
2124 rqf_last = s->req->flags;
2125
2126 /*
2127 * Now forward all shutdown requests between both sides of the buffer
2128 */
2129
Willy Tarreau520d95e2009-09-19 21:04:57 +02002130 /* first, let's check if the request buffer needs to shutdown(write), which may
2131 * happen either because the input is closed or because we want to force a close
Willy Tarreaue4599762010-03-21 23:25:09 +01002132 * once the server has begun to respond.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002133 */
Willy Tarreaub31c9712012-11-11 23:05:39 +01002134 if (unlikely((s->req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002135 (CF_AUTO_CLOSE|CF_SHUTR)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002136 channel_shutw_now(s->req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002137
2138 /* shutdown(write) pending */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002139 if (unlikely((s->req->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002140 channel_is_empty(s->req))) {
2141 if (s->req->flags & CF_READ_ERROR)
2142 s->req->cons->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02002143 si_shutw(s->req->cons);
Willy Tarreau8615c2a2013-06-21 08:20:19 +02002144 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002145
2146 /* shutdown(write) done on server side, we must stop the client too */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002147 if (unlikely((s->req->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW &&
Willy Tarreau3dbc6942008-12-07 13:05:04 +01002148 !s->req->analysers))
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002149 channel_shutr_now(s->req);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002150
2151 /* shutdown(read) pending */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002152 if (unlikely((s->req->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002153 if (s->req->prod->flags & SI_FL_NOHALF)
2154 s->req->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02002155 si_shutr(s->req->prod);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002156 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002157
Willy Tarreau520d95e2009-09-19 21:04:57 +02002158 /* it's possible that an upper layer has requested a connection setup or abort.
2159 * There are 2 situations where we decide to establish a new connection :
2160 * - there are data scheduled for emission in the buffer
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002161 * - the CF_AUTO_CONNECT flag is set (active connection)
Willy Tarreau520d95e2009-09-19 21:04:57 +02002162 */
2163 if (s->req->cons->state == SI_ST_INI) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002164 if (!(s->req->flags & CF_SHUTW)) {
2165 if ((s->req->flags & CF_AUTO_CONNECT) || !channel_is_empty(s->req)) {
Willy Tarreaub24281b2011-02-13 13:16:36 +01002166 /* If we have an applet without a connect method, we immediately
Willy Tarreau85e7d002010-05-31 11:57:51 +02002167 * switch to the connected state, otherwise we perform a connection
2168 * request.
Willy Tarreau520d95e2009-09-19 21:04:57 +02002169 */
Willy Tarreau85e7d002010-05-31 11:57:51 +02002170 s->req->cons->state = SI_ST_REQ; /* new connection requested */
Willy Tarreau070ceb62010-06-01 10:36:43 +02002171 s->req->cons->conn_retries = s->be->conn_retries;
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002172 if (unlikely(obj_type(s->req->cons->conn->target) == OBJ_TYPE_APPLET &&
Willy Tarreau73b013b2012-05-21 16:31:45 +02002173 !(si_ctrl(s->req->cons) && si_ctrl(s->req->cons)->connect))) {
Willy Tarreau520d95e2009-09-19 21:04:57 +02002174 s->req->cons->state = SI_ST_EST; /* connection established */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002175 s->rep->flags |= CF_READ_ATTACHED; /* producer is now attached */
Willy Tarreau85e7d002010-05-31 11:57:51 +02002176 s->req->wex = TICK_ETERNITY;
2177 }
Willy Tarreau520d95e2009-09-19 21:04:57 +02002178 }
Willy Tarreau73201222009-08-16 18:27:24 +02002179 }
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002180 else {
Willy Tarreau92795622009-03-06 12:51:23 +01002181 s->req->cons->state = SI_ST_CLO; /* shutw+ini = abort */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002182 channel_shutw_now(s->req); /* fix buffer flags upon abort */
2183 channel_shutr_now(s->rep);
Willy Tarreauf41ffdc2009-09-20 08:19:25 +02002184 }
Willy Tarreau92795622009-03-06 12:51:23 +01002185 }
2186
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002187
2188 /* we may have a pending connection request, or a connection waiting
2189 * for completion.
2190 */
2191 if (s->si[1].state >= SI_ST_REQ && s->si[1].state < SI_ST_CON) {
2192 do {
2193 /* nb: step 1 might switch from QUE to ASS, but we first want
2194 * to give a chance to step 2 to perform a redirect if needed.
2195 */
2196 if (s->si[1].state != SI_ST_REQ)
2197 sess_update_stream_int(s, &s->si[1]);
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002198 if (s->si[1].state == SI_ST_REQ) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002199 sess_prepare_conn_req(s, &s->si[1]);
2200
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002201 /* Now we can add the server name to a header (if requested) */
2202 /* check for HTTP mode and proxy server_name_hdr_name != NULL */
2203 if ((s->flags & SN_BE_ASSIGNED) &&
2204 (s->be->mode == PR_MODE_HTTP) &&
Willy Tarreau0fc36e32013-07-04 11:44:27 +02002205 (s->be->server_id_hdr_name != NULL && s->target)) {
Willy Tarreau1e5dfda2013-04-07 18:19:16 +02002206 http_send_name_header(&s->txn, s->be, objt_server(s->target)->id);
2207 }
2208 }
2209
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002210 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +01002211 if (s->si[1].state == SI_ST_ASS && srv && srv->rdr_len && (s->flags & SN_REDIRECTABLE))
Willy Tarreau71241ab2012-12-27 11:30:54 +01002212 http_perform_server_redirect(s, &s->si[1]);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002213 } while (s->si[1].state == SI_ST_ASS);
2214 }
2215
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002216 /* Benchmarks have shown that it's optimal to do a full resync now */
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002217 if (s->req->prod->state == SI_ST_DIS || s->req->cons->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002218 goto resync_stream_interface;
2219
Willy Tarreau815a9b22010-07-27 17:15:12 +02002220 /* otherwise we want to check if we need to resync the req buffer or not */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002221 if ((s->req->flags ^ rqf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002222 goto resync_request;
2223
Willy Tarreau3deb3d02009-06-21 22:43:05 +02002224 /* perform output updates to the response buffer */
Willy Tarreau84455332009-03-15 22:34:05 +01002225
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002226 /* If noone is interested in analysing data, it's time to forward
Willy Tarreau31971e52009-09-20 12:07:52 +02002227 * everything. We configure the buffer to forward indefinitely.
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002228 * Note that we're checking CF_SHUTR_NOW as an indication of a possible
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002229 * recent call to channel_abort().
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002230 */
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002231 if (!s->rep->analysers &&
Willy Tarreaub31c9712012-11-11 23:05:39 +01002232 !(s->rep->flags & (CF_SHUTW|CF_SHUTR_NOW)) &&
Willy Tarreau31971e52009-09-20 12:07:52 +02002233 (s->rep->prod->state >= SI_ST_EST) &&
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002234 (s->rep->to_forward != CHN_INFINITE_FORWARD)) {
Willy Tarreaub31c9712012-11-11 23:05:39 +01002235 /* This buffer is freewheeling, there's no analyser
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002236 * attached to it. If any data are left in, we'll permit them to
2237 * move.
2238 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002239 channel_auto_read(s->rep);
2240 channel_auto_close(s->rep);
Willy Tarreau9b28e032012-10-12 23:49:43 +02002241 buffer_flush(s->rep->buf);
Willy Tarreauda4d9fe2010-11-07 20:26:56 +01002242
2243 /* We'll let data flow between the producer (if still connected)
2244 * to the consumer.
2245 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002246 if (!(s->rep->flags & (CF_SHUTR|CF_SHUTW_NOW)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002247 channel_forward(s->rep, CHN_INFINITE_FORWARD);
Willy Tarreauce887fd2012-05-12 12:50:00 +02002248
2249 /* if we have no analyser anymore in any direction and have a
2250 * tunnel timeout set, use it now.
2251 */
2252 if (!s->req->analysers && s->be->timeout.tunnel) {
2253 s->req->rto = s->req->wto = s->rep->rto = s->rep->wto =
2254 s->be->timeout.tunnel;
2255 s->req->rex = s->req->wex = s->rep->rex = s->rep->wex =
2256 tick_add(now_ms, s->be->timeout.tunnel);
2257 }
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002258 }
Willy Tarreauf890dc92008-12-13 21:12:26 +01002259
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002260 /* check if it is wise to enable kernel splicing to forward response data */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002261 if (!(s->rep->flags & (CF_KERN_SPLICING|CF_SHUTR)) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002262 s->rep->to_forward &&
2263 (global.tune.options & GTUNE_USE_SPLICE) &&
Willy Tarreauf2943dc2012-10-26 20:10:28 +02002264 (s->si[0].conn->xprt && s->si[0].conn->xprt->rcv_pipe && s->si[0].conn->xprt->snd_pipe) &&
2265 (s->si[1].conn->xprt && s->si[1].conn->xprt->rcv_pipe && s->si[1].conn->xprt->snd_pipe) &&
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002266 (pipes_used < global.maxpipes) &&
2267 (((s->fe->options2|s->be->options2) & PR_O2_SPLIC_RTR) ||
2268 (((s->fe->options2|s->be->options2) & PR_O2_SPLIC_AUT) &&
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002269 (s->rep->flags & CF_STREAMER_FAST)))) {
2270 s->rep->flags |= CF_KERN_SPLICING;
Willy Tarreau7c84bab2009-03-08 21:38:23 +01002271 }
2272
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002273 /* reflect what the L7 analysers have seen last */
2274 rpf_last = s->rep->flags;
2275
2276 /*
2277 * Now forward all shutdown requests between both sides of the buffer
2278 */
2279
2280 /*
2281 * FIXME: this is probably where we should produce error responses.
2282 */
2283
Willy Tarreau6b66f3e2008-12-14 17:31:54 +01002284 /* first, let's check if the response buffer needs to shutdown(write) */
Willy Tarreaub31c9712012-11-11 23:05:39 +01002285 if (unlikely((s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CLOSE|CF_SHUTR)) ==
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002286 (CF_AUTO_CLOSE|CF_SHUTR)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002287 channel_shutw_now(s->rep);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002288
2289 /* shutdown(write) pending */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002290 if (unlikely((s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW &&
Willy Tarreau8e21bb92012-08-24 22:40:29 +02002291 channel_is_empty(s->rep)))
Willy Tarreau73b013b2012-05-21 16:31:45 +02002292 si_shutw(s->rep->cons);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002293
2294 /* shutdown(write) done on the client side, we must stop the server too */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002295 if (unlikely((s->rep->flags & (CF_SHUTW|CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTW) &&
Willy Tarreau3dbc6942008-12-07 13:05:04 +01002296 !s->rep->analysers)
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002297 channel_shutr_now(s->rep);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002298
2299 /* shutdown(read) pending */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002300 if (unlikely((s->rep->flags & (CF_SHUTR|CF_SHUTR_NOW)) == CF_SHUTR_NOW)) {
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002301 if (s->rep->prod->flags & SI_FL_NOHALF)
2302 s->rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau73b013b2012-05-21 16:31:45 +02002303 si_shutr(s->rep->prod);
Willy Tarreau7bb68ab2012-05-13 14:48:59 +02002304 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002305
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002306 if (s->req->prod->state == SI_ST_DIS || s->req->cons->state == SI_ST_DIS)
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002307 goto resync_stream_interface;
2308
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002309 if (s->req->flags != rqf_last)
2310 goto resync_request;
2311
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002312 if ((s->rep->flags ^ rpf_last) & CF_MASK_STATIC)
Willy Tarreau0be0ef92009-03-08 19:20:25 +01002313 goto resync_response;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002314
Willy Tarreau89f7ef22009-09-05 20:57:35 +02002315 /* we're interested in getting wakeups again */
2316 s->req->prod->flags &= ~SI_FL_DONT_WAKE;
2317 s->req->cons->flags &= ~SI_FL_DONT_WAKE;
2318
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002319 /* This is needed only when debugging is enabled, to indicate
2320 * client-side or server-side close. Please note that in the unlikely
2321 * event where both sides would close at once, the sequence is reported
2322 * on the server side first.
2323 */
2324 if (unlikely((global.mode & MODE_DEBUG) &&
2325 (!(global.mode & MODE_QUIET) ||
2326 (global.mode & MODE_VERBOSE)))) {
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002327 if (s->si[1].state == SI_ST_CLO &&
2328 s->si[1].prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002329 chunk_printf(&trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002330 s->uniq_id, s->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +01002331 (unsigned short)s->si[0].conn->t.sock.fd,
2332 (unsigned short)s->si[1].conn->t.sock.fd);
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002333 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002334 }
2335
2336 if (s->si[0].state == SI_ST_CLO &&
2337 s->si[0].prev_state == SI_ST_EST) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002338 chunk_printf(&trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002339 s->uniq_id, s->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +01002340 (unsigned short)s->si[0].conn->t.sock.fd,
2341 (unsigned short)s->si[1].conn->t.sock.fd);
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002342 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002343 }
2344 }
2345
2346 if (likely((s->rep->cons->state != SI_ST_CLO) ||
2347 (s->req->cons->state > SI_ST_INI && s->req->cons->state < SI_ST_CLO))) {
2348
2349 if ((s->fe->options & PR_O_CONTSTATS) && (s->flags & SN_BE_ASSIGNED))
2350 session_process_counters(s);
2351
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002352 if (s->rep->cons->state == SI_ST_EST && obj_type(s->rep->cons->conn->target) != OBJ_TYPE_APPLET)
Willy Tarreau73b013b2012-05-21 16:31:45 +02002353 si_update(s->rep->cons);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002354
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002355 if (s->req->cons->state == SI_ST_EST && obj_type(s->req->cons->conn->target) != OBJ_TYPE_APPLET)
Willy Tarreau73b013b2012-05-21 16:31:45 +02002356 si_update(s->req->cons);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002357
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002358 s->req->flags &= ~(CF_READ_NULL|CF_READ_PARTIAL|CF_WRITE_NULL|CF_WRITE_PARTIAL|CF_READ_ATTACHED);
2359 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 +01002360 s->si[0].prev_state = s->si[0].state;
2361 s->si[1].prev_state = s->si[1].state;
Willy Tarreaub0ef7352008-12-14 13:26:20 +01002362 s->si[0].flags &= ~(SI_FL_ERR|SI_FL_EXP);
2363 s->si[1].flags &= ~(SI_FL_ERR|SI_FL_EXP);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002364
2365 /* Trick: if a request is being waiting for the server to respond,
2366 * and if we know the server can timeout, we don't want the timeout
2367 * to expire on the client side first, but we're still interested
2368 * in passing data from the client to the server (eg: POST). Thus,
2369 * we can cancel the client's request timeout if the server's
2370 * request timeout is set and the server has not yet sent a response.
2371 */
2372
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002373 if ((s->rep->flags & (CF_AUTO_CLOSE|CF_SHUTR)) == 0 &&
Willy Tarreau86491c32008-12-14 09:04:47 +01002374 (tick_isset(s->req->wex) || tick_isset(s->rep->rex))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002375 s->req->flags |= CF_READ_NOEXP;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002376 s->req->rex = TICK_ETERNITY;
Willy Tarreau86491c32008-12-14 09:04:47 +01002377 }
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002378
Willy Tarreau7a20aa62010-07-13 16:30:45 +02002379 /* Call the stream interfaces' I/O handlers when embedded.
Willy Tarreau1accfc02009-09-05 20:57:35 +02002380 * Note that this one may wake the task up again.
2381 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01002382 if (obj_type(s->req->cons->conn->target) == OBJ_TYPE_APPLET ||
2383 obj_type(s->rep->cons->conn->target) == OBJ_TYPE_APPLET) {
2384 if (objt_applet(s->req->cons->conn->target))
2385 objt_applet(s->req->cons->conn->target)->fct(s->req->cons);
2386 if (objt_applet(s->rep->cons->conn->target))
2387 objt_applet(s->rep->cons->conn->target)->fct(s->rep->cons);
Willy Tarreau1accfc02009-09-05 20:57:35 +02002388 if (task_in_rq(t)) {
2389 /* If we woke up, we don't want to requeue the
2390 * task to the wait queue, but rather requeue
2391 * it into the runqueue ASAP.
2392 */
2393 t->expire = TICK_ETERNITY;
2394 return t;
2395 }
2396 }
2397
Willy Tarreau798f4322012-11-08 14:49:17 +01002398 update_exp_and_leave:
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002399 t->expire = tick_first(tick_first(s->req->rex, s->req->wex),
2400 tick_first(s->rep->rex, s->rep->wex));
2401 if (s->req->analysers)
2402 t->expire = tick_first(t->expire, s->req->analyse_exp);
2403
2404 if (s->si[0].exp)
2405 t->expire = tick_first(t->expire, s->si[0].exp);
2406
2407 if (s->si[1].exp)
2408 t->expire = tick_first(t->expire, s->si[1].exp);
2409
2410#ifdef DEBUG_FULL
Willy Tarreau127334e2009-03-28 10:47:26 +01002411 fprintf(stderr,
2412 "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u"
2413 " rep->rex=%u rep->wex=%u, si[0].exp=%u, si[1].exp=%u, cs=%d, ss=%d\n",
2414 now_ms, t->expire, s->req->rex, s->req->wex, s->req->analyse_exp,
2415 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 +01002416#endif
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002417
2418#ifdef DEBUG_DEV
2419 /* this may only happen when no timeout is set or in case of an FSM bug */
Willy Tarreaud0a201b2009-03-08 15:53:06 +01002420 if (!tick_isset(t->expire))
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002421 ABORT_NOW();
2422#endif
Willy Tarreau26c25062009-03-08 09:38:41 +01002423 return t; /* nothing more to do */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002424 }
2425
2426 s->fe->feconn--;
2427 if (s->flags & SN_BE_ASSIGNED)
2428 s->be->beconn--;
Willy Tarreau3c63fd82011-09-07 18:00:47 +02002429 if (!(s->listener->options & LI_O_UNLIMITED))
2430 actconn--;
Willy Tarreauaf7ad002010-08-31 15:39:26 +02002431 jobs--;
Willy Tarreau6e6fb2b2009-08-16 18:20:44 +02002432 s->listener->nbconn--;
Willy Tarreau62793712011-07-24 19:23:38 +02002433 if (s->listener->state == LI_FULL)
2434 resume_listener(s->listener);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002435
Willy Tarreau08ceb102011-07-24 22:58:00 +02002436 /* Dequeues all of the listeners waiting for a resource */
2437 if (!LIST_ISEMPTY(&global_listener_queue))
2438 dequeue_all_listeners(&global_listener_queue);
2439
Willy Tarreaub32907b2011-07-25 08:37:44 +02002440 if (!LIST_ISEMPTY(&s->fe->listener_queue) &&
2441 (!s->fe->fe_sps_lim || freq_ctr_remain(&s->fe->fe_sess_per_sec, s->fe->fe_sps_lim, 0) > 0))
Willy Tarreau07687c12011-07-24 23:55:06 +02002442 dequeue_all_listeners(&s->fe->listener_queue);
2443
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002444 if (unlikely((global.mode & MODE_DEBUG) &&
2445 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002446 chunk_printf(&trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002447 s->uniq_id, s->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +01002448 (unsigned short)s->req->prod->conn->t.sock.fd,
2449 (unsigned short)s->req->cons->conn->t.sock.fd);
Willy Tarreau19d14ef2012-10-29 16:51:55 +01002450 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002451 }
2452
2453 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
2454 session_process_counters(s);
2455
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002456 if (s->txn.status) {
2457 int n;
2458
2459 n = s->txn.status / 100;
2460 if (n < 1 || n > 5)
2461 n = 0;
2462
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002463 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002464 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +01002465 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002466 s->fe->fe_counters.p.http.comp_rsp++;
2467 }
Willy Tarreau24657792010-02-26 10:30:28 +01002468 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002469 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01002470 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002471 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +01002472 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01002473 s->be->be_counters.p.http.comp_rsp++;
2474 }
Krzysztof Piotr Oledzkide71d162009-10-24 15:36:15 +02002475 }
2476
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002477 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +01002478 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002479 !(s->flags & SN_MONITOR) &&
2480 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
Willy Tarreaua5555ec2008-11-30 19:02:32 +01002481 s->do_log(s);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002482 }
2483
2484 /* the task MUST not be in the run queue anymore */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002485 session_free(s);
Willy Tarreau26c25062009-03-08 09:38:41 +01002486 task_delete(t);
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002487 task_free(t);
Willy Tarreau26c25062009-03-08 09:38:41 +01002488 return NULL;
Willy Tarreau55a8d0e2008-11-30 18:47:21 +01002489}
2490
Willy Tarreau7c669d72008-06-20 15:04:11 +02002491/*
2492 * This function adjusts sess->srv_conn and maintains the previous and new
2493 * server's served session counts. Setting newsrv to NULL is enough to release
2494 * current connection slot. This function also notifies any LB algo which might
2495 * expect to be informed about any change in the number of active sessions on a
2496 * server.
2497 */
2498void sess_change_server(struct session *sess, struct server *newsrv)
2499{
2500 if (sess->srv_conn == newsrv)
2501 return;
2502
2503 if (sess->srv_conn) {
2504 sess->srv_conn->served--;
2505 if (sess->srv_conn->proxy->lbprm.server_drop_conn)
2506 sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
Simon Hormanaf514952011-06-21 14:34:57 +09002507 session_del_srv_conn(sess);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002508 }
2509
2510 if (newsrv) {
2511 newsrv->served++;
2512 if (newsrv->proxy->lbprm.server_take_conn)
2513 newsrv->proxy->lbprm.server_take_conn(newsrv);
Simon Hormanaf514952011-06-21 14:34:57 +09002514 session_add_srv_conn(sess, newsrv);
Willy Tarreau7c669d72008-06-20 15:04:11 +02002515 }
2516}
2517
Willy Tarreau84455332009-03-15 22:34:05 +01002518/* Handle server-side errors for default protocols. It is called whenever a a
2519 * connection setup is aborted or a request is aborted in queue. It sets the
2520 * session termination flags so that the caller does not have to worry about
2521 * them. It's installed as ->srv_error for the server-side stream_interface.
2522 */
2523void default_srv_error(struct session *s, struct stream_interface *si)
2524{
2525 int err_type = si->err_type;
2526 int err = 0, fin = 0;
2527
2528 if (err_type & SI_ET_QUEUE_ABRT) {
2529 err = SN_ERR_CLICL;
2530 fin = SN_FINST_Q;
2531 }
2532 else if (err_type & SI_ET_CONN_ABRT) {
2533 err = SN_ERR_CLICL;
2534 fin = SN_FINST_C;
2535 }
2536 else if (err_type & SI_ET_QUEUE_TO) {
2537 err = SN_ERR_SRVTO;
2538 fin = SN_FINST_Q;
2539 }
2540 else if (err_type & SI_ET_QUEUE_ERR) {
2541 err = SN_ERR_SRVCL;
2542 fin = SN_FINST_Q;
2543 }
2544 else if (err_type & SI_ET_CONN_TO) {
2545 err = SN_ERR_SRVTO;
2546 fin = SN_FINST_C;
2547 }
2548 else if (err_type & SI_ET_CONN_ERR) {
2549 err = SN_ERR_SRVCL;
2550 fin = SN_FINST_C;
2551 }
2552 else /* SI_ET_CONN_OTHER and others */ {
2553 err = SN_ERR_INTERNAL;
2554 fin = SN_FINST_C;
2555 }
2556
2557 if (!(s->flags & SN_ERR_MASK))
2558 s->flags |= err;
2559 if (!(s->flags & SN_FINST_MASK))
2560 s->flags |= fin;
2561}
Willy Tarreau7c669d72008-06-20 15:04:11 +02002562
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002563/* kill a session and set the termination flags to <why> (one of SN_ERR_*) */
2564void session_shutdown(struct session *session, int why)
2565{
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002566 if (session->req->flags & (CF_SHUTW|CF_SHUTW_NOW))
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002567 return;
2568
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002569 channel_shutw_now(session->req);
2570 channel_shutr_now(session->rep);
Willy Tarreaua2a64e92011-09-07 23:01:56 +02002571 session->task->nice = 1024;
2572 if (!(session->flags & SN_ERR_MASK))
2573 session->flags |= why;
2574 task_wakeup(session->task, TASK_WOKEN_OTHER);
2575}
Willy Tarreau9ba2dcc2010-06-14 21:04:55 +02002576
Willy Tarreau8b22a712010-06-18 17:46:06 +02002577/************************************************************************/
2578/* All supported ACL keywords must be declared here. */
2579/************************************************************************/
2580
Willy Tarreau4d4149c2013-07-23 19:33:46 +02002581/* Returns a pointer to a stkctr depending on the fetch keyword name.
2582 * It is designed to be called as sc[0-9]_* sc_* or src_* exclusively.
Willy Tarreaua65536c2013-07-22 22:40:11 +02002583 * sc[0-9]_* will return a pointer to the respective field in the
Willy Tarreau4d4149c2013-07-23 19:33:46 +02002584 * session <l4>. sc_* requires an UINT argument specifying the stick
2585 * counter number. src_* will fill a locally allocated structure with
Willy Tarreaua65536c2013-07-22 22:40:11 +02002586 * the table and entry corresponding to what is specified with src_*.
Willy Tarreau0f791d42013-07-23 19:56:43 +02002587 * NULL may be returned if the designated stkctr is not tracked. For
2588 * the sc_* and sc[0-9]_* forms, an optional table argument may be
2589 * passed. When present, the currently tracked key is then looked up
2590 * in the specified table instead of the current table. The purpose is
2591 * to be able to convery multiple values per key (eg: have gpc0 from
2592 * multiple tables).
Willy Tarreaua65536c2013-07-22 22:40:11 +02002593 */
2594static struct stkctr *
2595smp_fetch_sc_stkctr(struct session *l4, const struct arg *args, const char *kw)
2596{
2597 static struct stkctr stkctr;
Willy Tarreau4d4149c2013-07-23 19:33:46 +02002598 unsigned int num = kw[2] - '0';
Willy Tarreau0f791d42013-07-23 19:56:43 +02002599 int arg = 0;
Willy Tarreaua65536c2013-07-22 22:40:11 +02002600
Willy Tarreau0f791d42013-07-23 19:56:43 +02002601 if (num == '_' - '0') {
2602 /* sc_* variant, args[0] = ctr# (mandatory) */
2603 num = args[arg++].data.uint;
Willy Tarreau4d4149c2013-07-23 19:33:46 +02002604 if (num >= MAX_SESS_STKCTR)
2605 return NULL;
Willy Tarreaua65536c2013-07-22 22:40:11 +02002606 }
Willy Tarreau0f791d42013-07-23 19:56:43 +02002607 else if (num > 9) { /* src_* variant, args[0] = table */
Willy Tarreaua65536c2013-07-22 22:40:11 +02002608 struct stktable_key *key = addr_to_stktable_key(&l4->si[0].conn->addr.from);
2609
2610 if (!key)
2611 return NULL;
2612 stkctr.table = &args->data.prx->table;
2613 stkctr.entry = stktable_lookup_key(stkctr.table, key);
2614 return &stkctr;
2615 }
Willy Tarreau0f791d42013-07-23 19:56:43 +02002616
2617 /* Here, <num> contains the counter number from 0 to 9 for
2618 * the sc[0-9]_ form, or even higher using sc_(num) if needed.
2619 * args[arg] is the first optional argument.
2620 */
2621 if (unlikely(args[arg].type == ARGT_TAB)) {
2622 /* an alternate table was specified, let's look up the same key there */
2623 stkctr.table = &args[arg].data.prx->table;
2624 stkctr.entry = stktable_lookup(stkctr.table, l4->stkctr[num].entry);
2625 return &stkctr;
2626 }
2627 return l4->stkctr[num].entry ? &l4->stkctr[num] : NULL;
Willy Tarreaua65536c2013-07-22 22:40:11 +02002628}
2629
Willy Tarreau88821242013-07-22 18:29:29 +02002630/* set return a boolean indicating if the requested session counter is
2631 * currently being tracked or not.
2632 * Supports being called as "sc[0-9]_tracked" only.
2633 */
Willy Tarreau6f1615f2013-06-03 15:15:22 +02002634static int
Willy Tarreau88821242013-07-22 18:29:29 +02002635smp_fetch_sc_tracked(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02002636 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau6f1615f2013-06-03 15:15:22 +02002637{
2638 smp->flags = SMP_F_VOL_TEST;
2639 smp->type = SMP_T_BOOL;
Willy Tarreau88821242013-07-22 18:29:29 +02002640 smp->data.uint = !!l4->stkctr[kw[2] - '0'].entry;
Willy Tarreau6f1615f2013-06-03 15:15:22 +02002641 return 1;
2642}
2643
Willy Tarreau30b20462013-07-22 19:46:52 +02002644/* set <smp> to the General Purpose Counter 0 value from the session's tracked
2645 * frontend counters or from the src.
2646 * Supports being called as "sc[0-9]_get_gpc0" or "src_get_gpc0" only. Value
2647 * zero is returned if the key is new.
2648 */
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002649static int
Willy Tarreau30b20462013-07-22 19:46:52 +02002650smp_fetch_sc_get_gpc0(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2651 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002652{
Willy Tarreau30b20462013-07-22 19:46:52 +02002653 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2654
2655 if (!stkctr)
2656 return 0;
2657
Willy Tarreau37406352012-04-23 16:16:37 +02002658 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002659 smp->type = SMP_T_UINT;
2660 smp->data.uint = 0;
Willy Tarreau30b20462013-07-22 19:46:52 +02002661
2662 if (stkctr->entry != NULL) {
2663 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_GPC0);
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002664 if (!ptr)
2665 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002666 smp->data.uint = stktable_data_cast(ptr, gpc0);
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002667 }
2668 return 1;
2669}
2670
Willy Tarreaub5e0af02013-07-22 23:47:07 +02002671/* set <smp> to the General Purpose Counter 0's event rate from the session's
2672 * tracked frontend counters or from the src.
2673 * Supports being called as "sc[0-9]_gpc0_rate" or "src_gpc0_rate" only.
2674 * Value zero is returned if the key is new.
2675 */
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002676static int
Willy Tarreaub5e0af02013-07-22 23:47:07 +02002677smp_fetch_sc_gpc0_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2678 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002679{
Willy Tarreaub5e0af02013-07-22 23:47:07 +02002680 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2681
2682 if (!stkctr)
2683 return 0;
2684
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002685 smp->flags = SMP_F_VOL_TEST;
2686 smp->type = SMP_T_UINT;
2687 smp->data.uint = 0;
Willy Tarreaub5e0af02013-07-22 23:47:07 +02002688 if (stkctr->entry != NULL) {
2689 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_GPC0_RATE);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002690 if (!ptr)
2691 return 0; /* parameter not stored */
2692 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, gpc0_rate),
Willy Tarreaub5e0af02013-07-22 23:47:07 +02002693 stkctr->table->data_arg[STKTABLE_DT_GPC0_RATE].u);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002694 }
2695 return 1;
2696}
2697
Willy Tarreau710d38c2013-07-23 00:07:04 +02002698/* Increment the General Purpose Counter 0 value from the session's tracked
2699 * frontend counters and return it into temp integer.
2700 * Supports being called as "sc[0-9]_inc_gpc0" or "src_inc_gpc0" only.
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002701 */
2702static int
Willy Tarreau710d38c2013-07-23 00:07:04 +02002703smp_fetch_sc_inc_gpc0(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2704 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002705{
Willy Tarreau710d38c2013-07-23 00:07:04 +02002706 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2707
2708 if (!stkctr)
2709 return 0;
2710
Willy Tarreau37406352012-04-23 16:16:37 +02002711 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002712 smp->type = SMP_T_UINT;
2713 smp->data.uint = 0;
Willy Tarreau710d38c2013-07-23 00:07:04 +02002714 if (stkctr->entry != NULL) {
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002715 void *ptr;
2716
2717 /* First, update gpc0_rate if it's tracked. Second, update its
2718 * gpc0 if tracked. Returns gpc0's value otherwise the curr_ctr.
2719 */
Willy Tarreau710d38c2013-07-23 00:07:04 +02002720 ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_GPC0_RATE);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002721 if (ptr) {
2722 update_freq_ctr_period(&stktable_data_cast(ptr, gpc0_rate),
Willy Tarreau710d38c2013-07-23 00:07:04 +02002723 stkctr->table->data_arg[STKTABLE_DT_GPC0_RATE].u, 1);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002724 smp->data.uint = (&stktable_data_cast(ptr, gpc0_rate))->curr_ctr;
2725 }
2726
Willy Tarreau710d38c2013-07-23 00:07:04 +02002727 ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_GPC0);
Willy Tarreauba2ffd12013-05-29 15:54:14 +02002728 if (ptr)
2729 smp->data.uint = ++stktable_data_cast(ptr, gpc0);
2730
Willy Tarreauc3bd9722010-06-20 12:47:25 +02002731 }
2732 return 1;
2733}
2734
Willy Tarreaub9f441d2013-07-23 00:10:35 +02002735/* Clear the General Purpose Counter 0 value from the session's tracked
2736 * frontend counters and return its previous value into temp integer.
2737 * Supports being called as "sc[0-9]_clr_gpc0" or "src_clr_gpc0" only.
Willy Tarreauf73cd112011-08-13 01:45:16 +02002738 */
2739static int
Willy Tarreaub9f441d2013-07-23 00:10:35 +02002740smp_fetch_sc_clr_gpc0(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2741 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauf73cd112011-08-13 01:45:16 +02002742{
Willy Tarreaub9f441d2013-07-23 00:10:35 +02002743 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2744
2745 if (!stkctr)
2746 return 0;
2747
Willy Tarreau37406352012-04-23 16:16:37 +02002748 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002749 smp->type = SMP_T_UINT;
2750 smp->data.uint = 0;
Willy Tarreaub9f441d2013-07-23 00:10:35 +02002751 if (stkctr->entry != NULL) {
2752 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_GPC0);
Willy Tarreauf73cd112011-08-13 01:45:16 +02002753 if (!ptr)
2754 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002755 smp->data.uint = stktable_data_cast(ptr, gpc0);
Willy Tarreauf73cd112011-08-13 01:45:16 +02002756 stktable_data_cast(ptr, gpc0) = 0;
2757 }
2758 return 1;
2759}
2760
Willy Tarreau3b46c5c2013-07-23 00:22:50 +02002761/* set <smp> to the cumulated number of connections from the session's tracked
2762 * frontend counters. Supports being called as "sc[0-9]_conn_cnt" or
2763 * "src_conn_cnt" only.
2764 */
Willy Tarreau9a3f8492010-06-18 19:53:25 +02002765static int
Willy Tarreau3b46c5c2013-07-23 00:22:50 +02002766smp_fetch_sc_conn_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2767 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau9a3f8492010-06-18 19:53:25 +02002768{
Willy Tarreau3b46c5c2013-07-23 00:22:50 +02002769 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2770
2771 if (!stkctr)
2772 return 0;
2773
Willy Tarreau37406352012-04-23 16:16:37 +02002774 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002775 smp->type = SMP_T_UINT;
2776 smp->data.uint = 0;
Willy Tarreau3b46c5c2013-07-23 00:22:50 +02002777 if (stkctr->entry != NULL) {
2778 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_CONN_CNT);
Willy Tarreau9a3f8492010-06-18 19:53:25 +02002779 if (!ptr)
2780 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002781 smp->data.uint = stktable_data_cast(ptr, conn_cnt);
Willy Tarreau9a3f8492010-06-18 19:53:25 +02002782 }
Willy Tarreau9a3f8492010-06-18 19:53:25 +02002783 return 1;
2784}
2785
Willy Tarreauc8c65702013-07-23 15:09:35 +02002786/* set <smp> to the connection rate from the session's tracked frontend
2787 * counters. Supports being called as "sc[0-9]_conn_rate" or "src_conn_rate"
2788 * only.
2789 */
Willy Tarreau91c43d72010-06-20 11:19:22 +02002790static int
Willy Tarreauc8c65702013-07-23 15:09:35 +02002791smp_fetch_sc_conn_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2792 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau91c43d72010-06-20 11:19:22 +02002793{
Willy Tarreauc8c65702013-07-23 15:09:35 +02002794 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2795
2796 if (!stkctr)
2797 return 0;
2798
Willy Tarreau37406352012-04-23 16:16:37 +02002799 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002800 smp->type = SMP_T_UINT;
2801 smp->data.uint = 0;
Willy Tarreauc8c65702013-07-23 15:09:35 +02002802 if (stkctr->entry != NULL) {
2803 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_CONN_RATE);
Willy Tarreau91c43d72010-06-20 11:19:22 +02002804 if (!ptr)
2805 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002806 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, conn_rate),
Willy Tarreauc8c65702013-07-23 15:09:35 +02002807 stkctr->table->data_arg[STKTABLE_DT_CONN_RATE].u);
Willy Tarreau91c43d72010-06-20 11:19:22 +02002808 }
2809 return 1;
2810}
2811
Willy Tarreaua5e37562011-12-16 17:06:15 +01002812/* set temp integer to the number of connections from the session's source address
Willy Tarreau8b22a712010-06-18 17:46:06 +02002813 * in the table pointed to by expr, after updating it.
Willy Tarreau0146c2e2012-04-20 11:37:56 +02002814 * Accepts exactly 1 argument of type table.
Willy Tarreau8b22a712010-06-18 17:46:06 +02002815 */
2816static int
Willy Tarreau281c7992013-01-08 01:23:27 +01002817smp_fetch_src_updt_conn_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02002818 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8b22a712010-06-18 17:46:06 +02002819{
2820 struct stksess *ts;
2821 struct stktable_key *key;
2822 void *ptr;
2823
Willy Tarreauf2943dc2012-10-26 20:10:28 +02002824 key = addr_to_stktable_key(&l4->si[0].conn->addr.from);
Willy Tarreau8b22a712010-06-18 17:46:06 +02002825 if (!key)
David du Colombier4f92d322011-03-24 11:09:31 +01002826 return 0;
Willy Tarreau8b22a712010-06-18 17:46:06 +02002827
Willy Tarreau24e32d82012-04-23 23:55:44 +02002828 px = args->data.prx;
Willy Tarreau8b22a712010-06-18 17:46:06 +02002829
Willy Tarreau1f7e9252010-06-20 12:27:21 +02002830 if ((ts = stktable_update_key(&px->table, key)) == NULL)
2831 /* entry does not exist and could not be created */
2832 return 0;
Willy Tarreau8b22a712010-06-18 17:46:06 +02002833
2834 ptr = stktable_data_ptr(&px->table, ts, STKTABLE_DT_CONN_CNT);
2835 if (!ptr)
2836 return 0; /* parameter not stored in this table */
2837
Willy Tarreauf853c462012-04-23 18:53:56 +02002838 smp->type = SMP_T_UINT;
2839 smp->data.uint = ++stktable_data_cast(ptr, conn_cnt);
Willy Tarreau37406352012-04-23 16:16:37 +02002840 smp->flags = SMP_F_VOL_TEST;
Willy Tarreau8b22a712010-06-18 17:46:06 +02002841 return 1;
2842}
2843
Willy Tarreauf44a5532013-07-23 15:17:53 +02002844/* set <smp> to the number of concurrent connections from the session's tracked
2845 * frontend counters. Supports being called as "sc[0-9]_conn_cur" or
2846 * "src_conn_cur" only.
2847 */
Willy Tarreau9b0ddcf2010-06-18 21:14:36 +02002848static int
Willy Tarreauf44a5532013-07-23 15:17:53 +02002849smp_fetch_sc_conn_cur(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2850 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau9b0ddcf2010-06-18 21:14:36 +02002851{
Willy Tarreauf44a5532013-07-23 15:17:53 +02002852 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2853
2854 if (!stkctr)
2855 return 0;
2856
Willy Tarreau37406352012-04-23 16:16:37 +02002857 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002858 smp->type = SMP_T_UINT;
2859 smp->data.uint = 0;
Willy Tarreauf44a5532013-07-23 15:17:53 +02002860 if (stkctr->entry != NULL) {
2861 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_CONN_CUR);
Willy Tarreau9b0ddcf2010-06-18 21:14:36 +02002862 if (!ptr)
2863 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002864 smp->data.uint = stktable_data_cast(ptr, conn_cur);
Willy Tarreau9b0ddcf2010-06-18 21:14:36 +02002865 }
2866 return 1;
2867}
2868
Willy Tarreau20843082013-07-23 15:35:33 +02002869/* set <smp> to the cumulated number of sessions from the session's tracked
2870 * frontend counters. Supports being called as "sc[0-9]_sess_cnt" or
2871 * "src_sess_cnt" only.
2872 */
Willy Tarreauf4d17d92010-06-18 22:10:12 +02002873static int
Willy Tarreau20843082013-07-23 15:35:33 +02002874smp_fetch_sc_sess_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2875 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauf4d17d92010-06-18 22:10:12 +02002876{
Willy Tarreau20843082013-07-23 15:35:33 +02002877 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2878
2879 if (!stkctr)
2880 return 0;
2881
Willy Tarreau37406352012-04-23 16:16:37 +02002882 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002883 smp->type = SMP_T_UINT;
2884 smp->data.uint = 0;
Willy Tarreau20843082013-07-23 15:35:33 +02002885 if (stkctr->entry != NULL) {
2886 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_SESS_CNT);
Willy Tarreauf4d17d92010-06-18 22:10:12 +02002887 if (!ptr)
2888 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002889 smp->data.uint = stktable_data_cast(ptr, sess_cnt);
Willy Tarreauf4d17d92010-06-18 22:10:12 +02002890 }
2891 return 1;
2892}
2893
Willy Tarreau3a96f3f2013-07-23 15:48:01 +02002894/* set <smp> to the session rate from the session's tracked frontend counters.
2895 * Supports being called as "sc[0-9]_sess_rate" or "src_sess_rate" only.
2896 */
Willy Tarreau91c43d72010-06-20 11:19:22 +02002897static int
Willy Tarreau3a96f3f2013-07-23 15:48:01 +02002898smp_fetch_sc_sess_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2899 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau91c43d72010-06-20 11:19:22 +02002900{
Willy Tarreau3a96f3f2013-07-23 15:48:01 +02002901 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2902
2903 if (!stkctr)
2904 return 0;
2905
Willy Tarreau37406352012-04-23 16:16:37 +02002906 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002907 smp->type = SMP_T_UINT;
2908 smp->data.uint = 0;
Willy Tarreau3a96f3f2013-07-23 15:48:01 +02002909 if (stkctr->entry != NULL) {
2910 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_SESS_RATE);
Willy Tarreau91c43d72010-06-20 11:19:22 +02002911 if (!ptr)
2912 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002913 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, sess_rate),
Willy Tarreau3a96f3f2013-07-23 15:48:01 +02002914 stkctr->table->data_arg[STKTABLE_DT_SESS_RATE].u);
Willy Tarreau91c43d72010-06-20 11:19:22 +02002915 }
2916 return 1;
2917}
2918
Willy Tarreau91200da2013-07-23 15:55:19 +02002919/* set <smp> to the cumulated number of HTTP requests from the session's tracked
2920 * frontend counters. Supports being called as "sc[0-9]_http_req_cnt" or
2921 * "src_http_req_cnt" only.
2922 */
Willy Tarreauda7ff642010-06-23 11:44:09 +02002923static int
Willy Tarreau91200da2013-07-23 15:55:19 +02002924smp_fetch_sc_http_req_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2925 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauda7ff642010-06-23 11:44:09 +02002926{
Willy Tarreau91200da2013-07-23 15:55:19 +02002927 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2928
2929 if (!stkctr)
2930 return 0;
2931
Willy Tarreau37406352012-04-23 16:16:37 +02002932 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002933 smp->type = SMP_T_UINT;
2934 smp->data.uint = 0;
Willy Tarreau91200da2013-07-23 15:55:19 +02002935 if (stkctr->entry != NULL) {
2936 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_HTTP_REQ_CNT);
Willy Tarreauda7ff642010-06-23 11:44:09 +02002937 if (!ptr)
2938 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002939 smp->data.uint = stktable_data_cast(ptr, http_req_cnt);
Willy Tarreauda7ff642010-06-23 11:44:09 +02002940 }
2941 return 1;
2942}
2943
Willy Tarreaucf477632013-07-23 16:04:37 +02002944/* set <smp> to the HTTP request rate from the session's tracked frontend
2945 * counters. Supports being called as "sc[0-9]_http_req_rate" or
2946 * "src_http_req_rate" only.
2947 */
Willy Tarreauda7ff642010-06-23 11:44:09 +02002948static int
Willy Tarreaucf477632013-07-23 16:04:37 +02002949smp_fetch_sc_http_req_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2950 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauda7ff642010-06-23 11:44:09 +02002951{
Willy Tarreaucf477632013-07-23 16:04:37 +02002952 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2953
2954 if (!stkctr)
2955 return 0;
2956
Willy Tarreau37406352012-04-23 16:16:37 +02002957 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002958 smp->type = SMP_T_UINT;
2959 smp->data.uint = 0;
Willy Tarreaucf477632013-07-23 16:04:37 +02002960 if (stkctr->entry != NULL) {
2961 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_HTTP_REQ_RATE);
Willy Tarreauda7ff642010-06-23 11:44:09 +02002962 if (!ptr)
2963 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002964 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
Willy Tarreaucf477632013-07-23 16:04:37 +02002965 stkctr->table->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u);
Willy Tarreauda7ff642010-06-23 11:44:09 +02002966 }
2967 return 1;
2968}
2969
Willy Tarreau30d07c32013-07-23 16:45:38 +02002970/* set <smp> to the cumulated number of HTTP requests errors from the session's
2971 * tracked frontend counters. Supports being called as "sc[0-9]_http_err_cnt" or
2972 * "src_http_err_cnt" only.
2973 */
Willy Tarreauda7ff642010-06-23 11:44:09 +02002974static int
Willy Tarreau30d07c32013-07-23 16:45:38 +02002975smp_fetch_sc_http_err_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
2976 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauda7ff642010-06-23 11:44:09 +02002977{
Willy Tarreau30d07c32013-07-23 16:45:38 +02002978 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
2979
2980 if (!stkctr)
2981 return 0;
2982
Willy Tarreau37406352012-04-23 16:16:37 +02002983 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02002984 smp->type = SMP_T_UINT;
2985 smp->data.uint = 0;
Willy Tarreau30d07c32013-07-23 16:45:38 +02002986 if (stkctr->entry != NULL) {
2987 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_HTTP_ERR_CNT);
Willy Tarreauda7ff642010-06-23 11:44:09 +02002988 if (!ptr)
2989 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02002990 smp->data.uint = stktable_data_cast(ptr, http_err_cnt);
Willy Tarreauda7ff642010-06-23 11:44:09 +02002991 }
2992 return 1;
2993}
2994
Willy Tarreau9daf2622013-07-23 16:48:54 +02002995/* set <smp> to the HTTP request error rate from the session's tracked frontend
2996 * counters. Supports being called as "sc[0-9]_http_err_rate" or
2997 * "src_http_err_rate" only.
2998 */
Willy Tarreauda7ff642010-06-23 11:44:09 +02002999static int
Willy Tarreau9daf2622013-07-23 16:48:54 +02003000smp_fetch_sc_http_err_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3001 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauda7ff642010-06-23 11:44:09 +02003002{
Willy Tarreau9daf2622013-07-23 16:48:54 +02003003 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3004
3005 if (!stkctr)
3006 return 0;
3007
Willy Tarreau37406352012-04-23 16:16:37 +02003008 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003009 smp->type = SMP_T_UINT;
3010 smp->data.uint = 0;
Willy Tarreau9daf2622013-07-23 16:48:54 +02003011 if (stkctr->entry != NULL) {
3012 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_HTTP_ERR_RATE);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003013 if (!ptr)
3014 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003015 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
Willy Tarreau9daf2622013-07-23 16:48:54 +02003016 stkctr->table->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u);
Willy Tarreauda7ff642010-06-23 11:44:09 +02003017 }
3018 return 1;
3019}
3020
Willy Tarreau5077d4b2013-07-23 17:17:10 +02003021/* set <smp> to the number of kbytes received from clients, as found in the
3022 * session's tracked frontend counters. Supports being called as
3023 * "sc[0-9]_kbytes_in" or "src_kbytes_in" only.
3024 */
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003025static int
Willy Tarreau5077d4b2013-07-23 17:17:10 +02003026smp_fetch_sc_kbytes_in(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3027 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003028{
Willy Tarreau5077d4b2013-07-23 17:17:10 +02003029 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3030
3031 if (!stkctr)
3032 return 0;
3033
Willy Tarreau37406352012-04-23 16:16:37 +02003034 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003035 smp->type = SMP_T_UINT;
3036 smp->data.uint = 0;
Willy Tarreau5077d4b2013-07-23 17:17:10 +02003037 if (stkctr->entry != NULL) {
3038 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_BYTES_IN_CNT);
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003039 if (!ptr)
3040 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003041 smp->data.uint = stktable_data_cast(ptr, bytes_in_cnt) >> 10;
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003042 }
3043 return 1;
3044}
3045
Willy Tarreau613fe992013-07-23 17:39:19 +02003046/* set <smp> to the data rate received from clients in bytes/s, as found
3047 * in the session's tracked frontend counters. Supports being called as
3048 * "sc[0-9]_bytes_in_rate" or "src_bytes_in_rate" only.
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003049 */
3050static int
Willy Tarreau613fe992013-07-23 17:39:19 +02003051smp_fetch_sc_bytes_in_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3052 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003053{
Willy Tarreau613fe992013-07-23 17:39:19 +02003054 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3055
3056 if (!stkctr)
3057 return 0;
3058
Willy Tarreau37406352012-04-23 16:16:37 +02003059 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003060 smp->type = SMP_T_UINT;
3061 smp->data.uint = 0;
Willy Tarreau613fe992013-07-23 17:39:19 +02003062 if (stkctr->entry != NULL) {
3063 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_BYTES_IN_RATE);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003064 if (!ptr)
3065 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003066 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, bytes_in_rate),
Willy Tarreau613fe992013-07-23 17:39:19 +02003067 stkctr->table->data_arg[STKTABLE_DT_BYTES_IN_RATE].u);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003068 }
3069 return 1;
3070}
3071
Willy Tarreau53aea102013-07-23 17:39:02 +02003072/* set <smp> to the number of kbytes sent to clients, as found in the
3073 * session's tracked frontend counters. Supports being called as
3074 * "sc[0-9]_kbytes_out" or "src_kbytes_out" only.
3075 */
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003076static int
Willy Tarreau53aea102013-07-23 17:39:02 +02003077smp_fetch_sc_kbytes_out(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3078 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau1aa006f2010-06-18 21:52:52 +02003079{
Willy Tarreau53aea102013-07-23 17:39:02 +02003080 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3081
3082 if (!stkctr)
3083 return 0;
3084
Willy Tarreau37406352012-04-23 16:16:37 +02003085 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003086 smp->type = SMP_T_UINT;
3087 smp->data.uint = 0;
Willy Tarreau53aea102013-07-23 17:39:02 +02003088 if (stkctr->entry != NULL) {
3089 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_BYTES_OUT_CNT);
Willy Tarreau855e4bb2010-06-18 18:33:32 +02003090 if (!ptr)
3091 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003092 smp->data.uint = stktable_data_cast(ptr, bytes_out_cnt) >> 10;
Willy Tarreau855e4bb2010-06-18 18:33:32 +02003093 }
Willy Tarreau855e4bb2010-06-18 18:33:32 +02003094 return 1;
3095}
3096
Willy Tarreaua0b68ed2013-07-23 18:26:32 +02003097/* set <smp> to the data rate sent to clients in bytes/s, as found in the
3098 * session's tracked frontend counters. Supports being called as
3099 * "sc[0-9]_bytes_out_rate" or "src_bytes_out_rate" only.
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003100 */
3101static int
Willy Tarreaua0b68ed2013-07-23 18:26:32 +02003102smp_fetch_sc_bytes_out_rate(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
3103 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003104{
Willy Tarreaua0b68ed2013-07-23 18:26:32 +02003105 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
3106
3107 if (!stkctr)
3108 return 0;
3109
Willy Tarreau37406352012-04-23 16:16:37 +02003110 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003111 smp->type = SMP_T_UINT;
3112 smp->data.uint = 0;
Willy Tarreaua0b68ed2013-07-23 18:26:32 +02003113 if (stkctr->entry != NULL) {
3114 void *ptr = stktable_data_ptr(stkctr->table, stkctr->entry, STKTABLE_DT_BYTES_OUT_RATE);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003115 if (!ptr)
3116 return 0; /* parameter not stored */
Willy Tarreauf853c462012-04-23 18:53:56 +02003117 smp->data.uint = read_freq_ctr_period(&stktable_data_cast(ptr, bytes_out_rate),
Willy Tarreaua0b68ed2013-07-23 18:26:32 +02003118 stkctr->table->data_arg[STKTABLE_DT_BYTES_OUT_RATE].u);
Willy Tarreau6c59e0a2010-06-20 11:56:30 +02003119 }
3120 return 1;
3121}
3122
Willy Tarreau563eef42013-07-23 18:32:02 +02003123/* set <smp> to the number of active trackers on the SC entry in the session's
3124 * tracked frontend counters. Supports being called as "sc[0-9]_trackers" only.
3125 */
Willy Tarreau2406db42012-12-09 12:16:43 +01003126static int
Willy Tarreau563eef42013-07-23 18:32:02 +02003127smp_fetch_sc_trackers(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02003128 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2406db42012-12-09 12:16:43 +01003129{
Willy Tarreau563eef42013-07-23 18:32:02 +02003130 struct stkctr *stkctr = smp_fetch_sc_stkctr(l4, args, kw);
Willy Tarreau2406db42012-12-09 12:16:43 +01003131
Willy Tarreau563eef42013-07-23 18:32:02 +02003132 if (!stkctr)
Willy Tarreau2406db42012-12-09 12:16:43 +01003133 return 0;
3134
Willy Tarreau563eef42013-07-23 18:32:02 +02003135 smp->flags = SMP_F_VOL_TEST;
3136 smp->type = SMP_T_UINT;
3137 smp->data.uint = stkctr->entry->ref_cnt;
3138 return 1;
Willy Tarreaue25c9172013-05-28 18:32:20 +02003139}
3140
Willy Tarreau34db1082012-04-19 17:16:54 +02003141/* set temp integer to the number of used entries in the table pointed to by expr.
Willy Tarreau0146c2e2012-04-20 11:37:56 +02003142 * Accepts exactly 1 argument of type table.
Willy Tarreau34db1082012-04-19 17:16:54 +02003143 */
Willy Tarreauc735a072011-03-29 00:57:02 +02003144static int
Willy Tarreau281c7992013-01-08 01:23:27 +01003145smp_fetch_table_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02003146 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauc735a072011-03-29 00:57:02 +02003147{
Willy Tarreau37406352012-04-23 16:16:37 +02003148 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003149 smp->type = SMP_T_UINT;
Willy Tarreau24e32d82012-04-23 23:55:44 +02003150 smp->data.uint = args->data.prx->table.current;
Willy Tarreauc735a072011-03-29 00:57:02 +02003151 return 1;
3152}
3153
Willy Tarreau34db1082012-04-19 17:16:54 +02003154/* set temp integer to the number of free entries in the table pointed to by expr.
Willy Tarreau0146c2e2012-04-20 11:37:56 +02003155 * Accepts exactly 1 argument of type table.
Willy Tarreau34db1082012-04-19 17:16:54 +02003156 */
Willy Tarreauc735a072011-03-29 00:57:02 +02003157static int
Willy Tarreau281c7992013-01-08 01:23:27 +01003158smp_fetch_table_avl(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +02003159 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauc735a072011-03-29 00:57:02 +02003160{
Willy Tarreau24e32d82012-04-23 23:55:44 +02003161 px = args->data.prx;
Willy Tarreau37406352012-04-23 16:16:37 +02003162 smp->flags = SMP_F_VOL_TEST;
Willy Tarreauf853c462012-04-23 18:53:56 +02003163 smp->type = SMP_T_UINT;
3164 smp->data.uint = px->table.size - px->table.current;
Willy Tarreauc735a072011-03-29 00:57:02 +02003165 return 1;
3166}
Willy Tarreau8b22a712010-06-18 17:46:06 +02003167
Willy Tarreau61612d42012-04-19 18:42:05 +02003168/* Note: must not be declared <const> as its list will be overwritten.
3169 * Please take care of keeping this list alphabetically sorted.
3170 */
Willy Tarreaudc13c112013-06-21 23:16:39 +02003171static struct acl_kw_list acl_kws = {ILH, {
Willy Tarreau281c7992013-01-08 01:23:27 +01003172 { /* END */ },
Willy Tarreau8b22a712010-06-18 17:46:06 +02003173}};
3174
Willy Tarreau281c7992013-01-08 01:23:27 +01003175/* Note: must not be declared <const> as its list will be overwritten.
3176 * Please take care of keeping this list alphabetically sorted.
3177 */
Willy Tarreaudc13c112013-06-21 23:16:39 +02003178static struct sample_fetch_kw_list smp_fetch_keywords = {ILH, {
Willy Tarreau0f791d42013-07-23 19:56:43 +02003179 { "sc_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3180 { "sc_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3181 { "sc_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3182 { "sc_conn_cnt", smp_fetch_sc_conn_cnt, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3183 { "sc_conn_cur", smp_fetch_sc_conn_cur, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3184 { "sc_conn_rate", smp_fetch_sc_conn_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3185 { "sc_get_gpc0", smp_fetch_sc_get_gpc0, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3186 { "sc_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3187 { "sc_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3188 { "sc_http_err_rate", smp_fetch_sc_http_err_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3189 { "sc_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3190 { "sc_http_req_rate", smp_fetch_sc_http_req_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3191 { "sc_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3192 { "sc_kbytes_in", smp_fetch_sc_kbytes_in, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3193 { "sc_kbytes_out", smp_fetch_sc_kbytes_out, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3194 { "sc_sess_cnt", smp_fetch_sc_sess_cnt, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3195 { "sc_sess_rate", smp_fetch_sc_sess_rate, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3196 { "sc_tracked", smp_fetch_sc_tracked, ARG2(1,UINT,TAB), NULL, SMP_T_BOOL, SMP_USE_INTRN, },
3197 { "sc_trackers", smp_fetch_sc_trackers, ARG2(1,UINT,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3198 { "sc0_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3199 { "sc0_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3200 { "sc0_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3201 { "sc0_conn_cnt", smp_fetch_sc_conn_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3202 { "sc0_conn_cur", smp_fetch_sc_conn_cur, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3203 { "sc0_conn_rate", smp_fetch_sc_conn_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3204 { "sc0_get_gpc0", smp_fetch_sc_get_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3205 { "sc0_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3206 { "sc0_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3207 { "sc0_http_err_rate", smp_fetch_sc_http_err_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3208 { "sc0_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3209 { "sc0_http_req_rate", smp_fetch_sc_http_req_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3210 { "sc0_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3211 { "sc0_kbytes_in", smp_fetch_sc_kbytes_in, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3212 { "sc0_kbytes_out", smp_fetch_sc_kbytes_out, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3213 { "sc0_sess_cnt", smp_fetch_sc_sess_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3214 { "sc0_sess_rate", smp_fetch_sc_sess_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3215 { "sc0_tracked", smp_fetch_sc_tracked, ARG1(0,TAB), NULL, SMP_T_BOOL, SMP_USE_INTRN, },
3216 { "sc0_trackers", smp_fetch_sc_trackers, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3217 { "sc1_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3218 { "sc1_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3219 { "sc1_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3220 { "sc1_conn_cnt", smp_fetch_sc_conn_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3221 { "sc1_conn_cur", smp_fetch_sc_conn_cur, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3222 { "sc1_conn_rate", smp_fetch_sc_conn_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3223 { "sc1_get_gpc0", smp_fetch_sc_get_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3224 { "sc1_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3225 { "sc1_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3226 { "sc1_http_err_rate", smp_fetch_sc_http_err_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3227 { "sc1_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3228 { "sc1_http_req_rate", smp_fetch_sc_http_req_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3229 { "sc1_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3230 { "sc1_kbytes_in", smp_fetch_sc_kbytes_in, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3231 { "sc1_kbytes_out", smp_fetch_sc_kbytes_out, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3232 { "sc1_sess_cnt", smp_fetch_sc_sess_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3233 { "sc1_sess_rate", smp_fetch_sc_sess_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3234 { "sc1_tracked", smp_fetch_sc_tracked, ARG1(0,TAB), NULL, SMP_T_BOOL, SMP_USE_INTRN, },
3235 { "sc1_trackers", smp_fetch_sc_trackers, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3236 { "sc2_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3237 { "sc2_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3238 { "sc2_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3239 { "sc2_conn_cnt", smp_fetch_sc_conn_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3240 { "sc2_conn_cur", smp_fetch_sc_conn_cur, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3241 { "sc2_conn_rate", smp_fetch_sc_conn_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3242 { "sc2_get_gpc0", smp_fetch_sc_get_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3243 { "sc2_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3244 { "sc2_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3245 { "sc2_http_err_rate", smp_fetch_sc_http_err_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3246 { "sc2_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3247 { "sc2_http_req_rate", smp_fetch_sc_http_req_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3248 { "sc2_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3249 { "sc2_kbytes_in", smp_fetch_sc_kbytes_in, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3250 { "sc2_kbytes_out", smp_fetch_sc_kbytes_out, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3251 { "sc2_sess_cnt", smp_fetch_sc_sess_cnt, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3252 { "sc2_sess_rate", smp_fetch_sc_sess_rate, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3253 { "sc2_tracked", smp_fetch_sc_tracked, ARG1(0,TAB), NULL, SMP_T_BOOL, SMP_USE_INTRN, },
3254 { "sc2_trackers", smp_fetch_sc_trackers, ARG1(0,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3255 { "src_bytes_in_rate", smp_fetch_sc_bytes_in_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3256 { "src_bytes_out_rate", smp_fetch_sc_bytes_out_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3257 { "src_clr_gpc0", smp_fetch_sc_clr_gpc0, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3258 { "src_conn_cnt", smp_fetch_sc_conn_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3259 { "src_conn_cur", smp_fetch_sc_conn_cur, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3260 { "src_conn_rate", smp_fetch_sc_conn_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3261 { "src_get_gpc0", smp_fetch_sc_get_gpc0, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3262 { "src_gpc0_rate", smp_fetch_sc_gpc0_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3263 { "src_http_err_cnt", smp_fetch_sc_http_err_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3264 { "src_http_err_rate", smp_fetch_sc_http_err_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3265 { "src_http_req_cnt", smp_fetch_sc_http_req_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3266 { "src_http_req_rate", smp_fetch_sc_http_req_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3267 { "src_inc_gpc0", smp_fetch_sc_inc_gpc0, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3268 { "src_kbytes_in", smp_fetch_sc_kbytes_in, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3269 { "src_kbytes_out", smp_fetch_sc_kbytes_out, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3270 { "src_sess_cnt", smp_fetch_sc_sess_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3271 { "src_sess_rate", smp_fetch_sc_sess_rate, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3272 { "src_updt_conn_cnt", smp_fetch_src_updt_conn_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_L4CLI, },
3273 { "table_avl", smp_fetch_table_avl, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
3274 { "table_cnt", smp_fetch_table_cnt, ARG1(1,TAB), NULL, SMP_T_UINT, SMP_USE_INTRN, },
Willy Tarreau281c7992013-01-08 01:23:27 +01003275 { /* END */ },
3276}};
3277
Willy Tarreau8b22a712010-06-18 17:46:06 +02003278__attribute__((constructor))
3279static void __session_init(void)
3280{
Willy Tarreau281c7992013-01-08 01:23:27 +01003281 sample_register_fetches(&smp_fetch_keywords);
Willy Tarreau8b22a712010-06-18 17:46:06 +02003282 acl_register_keywords(&acl_kws);
3283}
3284
Willy Tarreaubaaee002006-06-26 02:48:02 +02003285/*
3286 * Local variables:
3287 * c-indent-level: 8
3288 * c-basic-offset: 8
3289 * End:
3290 */