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Willy Tarreaucff64112008-11-03 06:26:53 +01001/*
Willy Tarreau8e89b842009-10-18 23:56:35 +02002 * include/proto/stream_interface.h
3 * This file contains stream_interface function prototypes
4 *
Willy Tarreau2bb4a962014-11-28 11:11:05 +01005 * Copyright (C) 2000-2014 Willy Tarreau - w@1wt.eu
Willy Tarreau8e89b842009-10-18 23:56:35 +02006 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation, version 2.1
10 * exclusively.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
Willy Tarreaucff64112008-11-03 06:26:53 +010021
22#ifndef _PROTO_STREAM_INTERFACE_H
23#define _PROTO_STREAM_INTERFACE_H
24
25#include <stdlib.h>
26
27#include <common/config.h>
Willy Tarreau323a2d92015-08-04 19:00:17 +020028#include <types/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020029#include <types/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +010030#include <types/stream_interface.h>
Willy Tarreau8a8d83b2015-04-13 13:24:54 +020031#include <proto/applet.h>
Willy Tarreau14f8e862012-08-30 22:23:13 +020032#include <proto/channel.h>
Willy Tarreauf9dabec2012-08-17 17:33:53 +020033#include <proto/connection.h>
Willy Tarreaucff64112008-11-03 06:26:53 +010034
35
36/* main event functions used to move data between sockets and buffers */
Willy Tarreau269358d2009-09-20 20:14:49 +020037int stream_int_check_timeouts(struct stream_interface *si);
Willy Tarreaucff64112008-11-03 06:26:53 +010038void stream_int_report_error(struct stream_interface *si);
Willy Tarreau83061a82018-07-13 11:56:34 +020039void stream_int_retnclose(struct stream_interface *si,
40 const struct buffer *msg);
Willy Tarreau2c6be842012-07-06 17:12:34 +020041int conn_si_send_proxy(struct connection *conn, unsigned int flag);
Willy Tarreau9bf9c142012-08-20 15:38:41 +020042void stream_sock_read0(struct stream_interface *si);
Willy Tarreaucff64112008-11-03 06:26:53 +010043
Willy Tarreauc5788912012-08-24 18:12:41 +020044extern struct si_ops si_embedded_ops;
Willy Tarreauc5788912012-08-24 18:12:41 +020045extern struct si_ops si_conn_ops;
Willy Tarreaud45b9f82015-04-13 16:30:14 +020046extern struct si_ops si_applet_ops;
Willy Tarreau74beec32012-10-03 00:41:04 +020047extern struct data_cb si_conn_cb;
Willy Tarreau27375622013-12-17 00:00:28 +010048extern struct data_cb si_idle_conn_cb;
Willy Tarreau5c979a92012-05-07 17:15:39 +020049
Willy Tarreau30576452015-04-13 13:50:30 +020050struct appctx *stream_int_register_handler(struct stream_interface *si, struct applet *app);
Willy Tarreauaa977ba2015-09-25 11:45:06 +020051void si_applet_wake_cb(struct stream_interface *si);
Willy Tarreau25f13102015-09-24 11:32:22 +020052void stream_int_update(struct stream_interface *si);
Willy Tarreaucbc32602015-09-25 11:01:42 +020053void stream_int_update_conn(struct stream_interface *si);
54void stream_int_update_applet(struct stream_interface *si);
Willy Tarreau615f28b2015-09-23 18:40:09 +020055void stream_int_notify(struct stream_interface *si);
Olivier Houchard91894cb2018-08-02 18:06:28 +020056struct task *si_cs_io_cb(struct task *t, void *ctx, unsigned short state);
Willy Tarreaufb90d942009-09-05 20:57:35 +020057
Willy Tarreau2bb4a962014-11-28 11:11:05 +010058/* returns the channel which receives data from this stream interface (input channel) */
59static inline struct channel *si_ic(struct stream_interface *si)
60{
Willy Tarreau0b2fb7f2014-11-28 11:50:38 +010061 if (si->flags & SI_FL_ISBACK)
Willy Tarreau87b09662015-04-03 00:22:06 +020062 return &LIST_ELEM(si, struct stream *, si[1])->res;
Willy Tarreau0b2fb7f2014-11-28 11:50:38 +010063 else
Willy Tarreau87b09662015-04-03 00:22:06 +020064 return &LIST_ELEM(si, struct stream *, si[0])->req;
Willy Tarreau2bb4a962014-11-28 11:11:05 +010065}
66
67/* returns the channel which feeds data to this stream interface (output channel) */
68static inline struct channel *si_oc(struct stream_interface *si)
69{
Willy Tarreau0b2fb7f2014-11-28 11:50:38 +010070 if (si->flags & SI_FL_ISBACK)
Willy Tarreau87b09662015-04-03 00:22:06 +020071 return &LIST_ELEM(si, struct stream *, si[1])->req;
Willy Tarreau0b2fb7f2014-11-28 11:50:38 +010072 else
Willy Tarreau87b09662015-04-03 00:22:06 +020073 return &LIST_ELEM(si, struct stream *, si[0])->res;
Willy Tarreau2bb4a962014-11-28 11:11:05 +010074}
75
Willy Tarreau4e4292b2014-11-28 12:18:45 +010076/* returns the buffer which receives data from this stream interface (input channel's buffer) */
77static inline struct buffer *si_ib(struct stream_interface *si)
78{
Willy Tarreauc9fa0482018-07-10 17:43:27 +020079 return &si_ic(si)->buf;
Willy Tarreau4e4292b2014-11-28 12:18:45 +010080}
81
82/* returns the buffer which feeds data to this stream interface (output channel's buffer) */
83static inline struct buffer *si_ob(struct stream_interface *si)
84{
Willy Tarreauc9fa0482018-07-10 17:43:27 +020085 return &si_oc(si)->buf;
Willy Tarreau4e4292b2014-11-28 12:18:45 +010086}
87
Willy Tarreau87b09662015-04-03 00:22:06 +020088/* returns the stream associated to a stream interface */
89static inline struct stream *si_strm(struct stream_interface *si)
Willy Tarreauaefd7902014-11-28 12:03:32 +010090{
91 if (si->flags & SI_FL_ISBACK)
Willy Tarreau87b09662015-04-03 00:22:06 +020092 return LIST_ELEM(si, struct stream *, si[1]);
Willy Tarreauaefd7902014-11-28 12:03:32 +010093 else
Willy Tarreau87b09662015-04-03 00:22:06 +020094 return LIST_ELEM(si, struct stream *, si[0]);
Willy Tarreauaefd7902014-11-28 12:03:32 +010095}
96
Willy Tarreau07373b82014-11-28 12:08:47 +010097/* returns the task associated to this stream interface */
98static inline struct task *si_task(struct stream_interface *si)
99{
100 if (si->flags & SI_FL_ISBACK)
Willy Tarreau87b09662015-04-03 00:22:06 +0200101 return LIST_ELEM(si, struct stream *, si[1])->task;
Willy Tarreau07373b82014-11-28 12:08:47 +0100102 else
Willy Tarreau87b09662015-04-03 00:22:06 +0200103 return LIST_ELEM(si, struct stream *, si[0])->task;
Willy Tarreau07373b82014-11-28 12:08:47 +0100104}
105
Willy Tarreau50fe03b2014-11-28 13:59:31 +0100106/* returns the stream interface on the other side. Used during forwarding. */
107static inline struct stream_interface *si_opposite(struct stream_interface *si)
108{
109 if (si->flags & SI_FL_ISBACK)
Willy Tarreau87b09662015-04-03 00:22:06 +0200110 return &LIST_ELEM(si, struct stream *, si[1])->si[0];
Willy Tarreau50fe03b2014-11-28 13:59:31 +0100111 else
Willy Tarreau87b09662015-04-03 00:22:06 +0200112 return &LIST_ELEM(si, struct stream *, si[0])->si[1];
Willy Tarreau50fe03b2014-11-28 13:59:31 +0100113}
114
Willy Tarreau3ed35ef2013-10-24 11:51:38 +0200115/* initializes a stream interface in the SI_ST_INI state. It's detached from
Willy Tarreau819d3322014-11-28 12:12:34 +0100116 * any endpoint and only keeps its side which is expected to have already been
117 * set.
Willy Tarreau3ed35ef2013-10-24 11:51:38 +0200118 */
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200119static inline int si_reset(struct stream_interface *si)
Willy Tarreau3ed35ef2013-10-24 11:51:38 +0200120{
Willy Tarreau3ed35ef2013-10-24 11:51:38 +0200121 si->err_type = SI_ET_NONE;
122 si->conn_retries = 0; /* used for logging too */
Willy Tarreau3ed35ef2013-10-24 11:51:38 +0200123 si->exp = TICK_ETERNITY;
Willy Tarreaua5f5d8d2014-11-28 11:26:07 +0100124 si->flags &= SI_FL_ISBACK;
Willy Tarreau3ed35ef2013-10-24 11:51:38 +0200125 si->end = NULL;
126 si->state = si->prev_state = SI_ST_INI;
Willy Tarreau7365dad2015-04-20 01:03:17 +0200127 si->ops = &si_embedded_ops;
Olivier Houchard8f0b4c62018-08-02 18:21:38 +0200128 si->wait_list.task = tasklet_new();
129 if (!si->wait_list.task)
130 return -1;
131 si->wait_list.task->process = si_cs_io_cb;
132 si->wait_list.task->context = si;
133 si->wait_list.wait_reason = 0;
134 LIST_INIT(&si->wait_list.list);
135 return 0;
Willy Tarreau3ed35ef2013-10-24 11:51:38 +0200136}
137
138/* sets the current and previous state of a stream interface to <state>. This
139 * is mainly used to create one in the established state on incoming
140 * conncetions.
141 */
142static inline void si_set_state(struct stream_interface *si, int state)
143{
144 si->state = si->prev_state = state;
145}
146
Willy Tarreau41b09f42015-08-04 20:44:05 +0200147/* only detaches the endpoint from the SI, which means that it's set to
148 * NULL and that ->ops is mapped to si_embedded_ops. The previous endpoint
149 * is returned.
150 */
151static inline enum obj_type *si_detach_endpoint(struct stream_interface *si)
152{
153 enum obj_type *prev = si->end;
154
155 si->end = NULL;
156 si->ops = &si_embedded_ops;
157 return prev;
158}
159
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100160/* Release the endpoint if it's a connection or an applet, then nullify it.
161 * Note: released connections are closed then freed.
162 */
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200163static inline void si_release_endpoint(struct stream_interface *si)
Willy Tarreau372d6702013-09-29 17:19:56 +0200164{
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200165 struct conn_stream *cs;
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100166 struct appctx *appctx;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200167
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100168 if (!si->end)
169 return;
170
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200171 if ((cs = objt_cs(si->end)))
172 cs_destroy(cs);
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100173 else if ((appctx = objt_appctx(si->end))) {
Willy Tarreau958f0742015-09-25 20:24:26 +0200174 if (appctx->applet->release && si->state < SI_ST_DIS)
Willy Tarreau00a37f02015-04-13 12:05:19 +0200175 appctx->applet->release(appctx);
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100176 appctx_free(appctx); /* we share the connection pool */
177 }
Willy Tarreau41b09f42015-08-04 20:44:05 +0200178 si_detach_endpoint(si);
Willy Tarreau372d6702013-09-29 17:19:56 +0200179}
180
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200181/* Turn an existing connection endpoint of stream interface <si> to idle mode,
182 * which means that the connection will be polled for incoming events and might
183 * be killed by the underlying I/O handler. If <pool> is not null, the
184 * connection will also be added at the head of this list. This connection
185 * remains assigned to the stream interface it is currently attached to.
Willy Tarreau27375622013-12-17 00:00:28 +0100186 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200187static inline void si_idle_cs(struct stream_interface *si, struct list *pool)
Willy Tarreau27375622013-12-17 00:00:28 +0100188{
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200189 struct conn_stream *cs = __objt_cs(si->end);
190 struct connection *conn = cs->conn;
Willy Tarreau27375622013-12-17 00:00:28 +0100191
Willy Tarreau323a2d92015-08-04 19:00:17 +0200192 if (pool)
193 LIST_ADD(pool, &conn->list);
194
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200195 cs_attach(cs, si, &si_idle_conn_cb);
196 cs_want_recv(cs);
Willy Tarreau27375622013-12-17 00:00:28 +0100197}
198
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200199/* Attach conn_stream <cs> to the stream interface <si>. The stream interface
Willy Tarreau2a6e8802013-10-24 15:50:53 +0200200 * is configured to work with a connection and the connection it configured
201 * with a stream interface data layer.
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200202 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200203static inline void si_attach_cs(struct stream_interface *si, struct conn_stream *cs)
Willy Tarreaubd99aab2012-10-02 20:57:19 +0200204{
205 si->ops = &si_conn_ops;
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200206 si->end = &cs->obj_type;
207 cs_attach(cs, si, &si_conn_cb);
Willy Tarreaubd99aab2012-10-02 20:57:19 +0200208}
209
Willy Tarreaud02cdd22013-12-15 10:23:20 +0100210/* Returns true if a connection is attached to the stream interface <si> and
211 * if this connection is ready.
212 */
213static inline int si_conn_ready(struct stream_interface *si)
214{
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200215 struct connection *conn = cs_conn(objt_cs(si->end));
Willy Tarreaud02cdd22013-12-15 10:23:20 +0100216
217 return conn && conn_ctrl_ready(conn) && conn_xprt_ready(conn);
218}
219
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100220/* Attach appctx <appctx> to the stream interface <si>. The stream interface
Willy Tarreaua7513f52015-04-05 00:15:26 +0200221 * is configured to work with an applet context.
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100222 */
223static inline void si_attach_appctx(struct stream_interface *si, struct appctx *appctx)
Willy Tarreauc5788912012-08-24 18:12:41 +0200224{
Willy Tarreaud45b9f82015-04-13 16:30:14 +0200225 si->ops = &si_applet_ops;
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100226 si->end = &appctx->obj_type;
Willy Tarreau19c81612015-04-13 11:48:16 +0200227 appctx->owner = si;
Willy Tarreauc5788912012-08-24 18:12:41 +0200228}
229
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100230/* returns a pointer to the appctx being run in the SI or NULL if none */
231static inline struct appctx *si_appctx(struct stream_interface *si)
232{
233 return objt_appctx(si->end);
234}
235
Willy Tarreau4a59f2f2013-10-24 20:10:45 +0200236/* call the applet's release function if any. Needs to be called upon close() */
237static inline void si_applet_release(struct stream_interface *si)
238{
Willy Tarreau00a37f02015-04-13 12:05:19 +0200239 struct appctx *appctx;
Willy Tarreau4a59f2f2013-10-24 20:10:45 +0200240
Willy Tarreau00a37f02015-04-13 12:05:19 +0200241 appctx = si_appctx(si);
Willy Tarreau958f0742015-09-25 20:24:26 +0200242 if (appctx && appctx->applet->release && si->state < SI_ST_DIS)
Willy Tarreau00a37f02015-04-13 12:05:19 +0200243 appctx->applet->release(appctx);
Willy Tarreau4a59f2f2013-10-24 20:10:45 +0200244}
245
Willy Tarreaueb406dc2015-04-21 18:44:02 +0200246/* let an applet indicate that it wants to put some data into the input buffer */
247static inline void si_applet_want_put(struct stream_interface *si)
248{
249 si->flags |= SI_FL_WANT_PUT;
250}
251
252/* let an applet indicate that it wanted to put some data into the input buffer
253 * but it couldn't.
254 */
255static inline void si_applet_cant_put(struct stream_interface *si)
256{
257 si->flags |= SI_FL_WANT_PUT | SI_FL_WAIT_ROOM;
258}
259
260/* let an applet indicate that it doesn't want to put data into the input buffer */
261static inline void si_applet_stop_put(struct stream_interface *si)
262{
263 si->flags &= ~SI_FL_WANT_PUT;
264}
265
266/* let an applet indicate that it wants to get some data from the output buffer */
267static inline void si_applet_want_get(struct stream_interface *si)
268{
269 si->flags |= SI_FL_WANT_GET;
270}
271
272/* let an applet indicate that it wanted to get some data from the output buffer
273 * but it couldn't.
274 */
275static inline void si_applet_cant_get(struct stream_interface *si)
276{
277 si->flags |= SI_FL_WANT_GET | SI_FL_WAIT_DATA;
278}
279
280/* let an applet indicate that it doesn't want to get data from the input buffer */
281static inline void si_applet_stop_get(struct stream_interface *si)
282{
283 si->flags &= ~SI_FL_WANT_GET;
284}
285
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200286/* Try to allocate a new conn_stream and assign it to the interface. If
Willy Tarreau973a5422015-08-05 21:47:23 +0200287 * an endpoint was previously allocated, it is released first. The newly
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200288 * allocated conn_stream is initialized, assigned to the stream interface,
Willy Tarreau973a5422015-08-05 21:47:23 +0200289 * and returned.
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100290 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200291static inline struct conn_stream *si_alloc_cs(struct stream_interface *si, struct connection *conn)
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200292{
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200293 struct conn_stream *cs;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200294
Willy Tarreau973a5422015-08-05 21:47:23 +0200295 si_release_endpoint(si);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200296
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200297 cs = cs_new(conn);
298 if (cs)
299 si_attach_cs(si, cs);
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200300
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200301 return cs;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200302}
303
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100304/* Release the interface's existing endpoint (connection or appctx) and
305 * allocate then initialize a new appctx which is assigned to the interface
Willy Tarreaua7513f52015-04-05 00:15:26 +0200306 * and returned. NULL may be returned upon memory shortage. Applet <applet>
307 * is assigned to the appctx, but it may be NULL.
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100308 */
Willy Tarreau30576452015-04-13 13:50:30 +0200309static inline struct appctx *si_alloc_appctx(struct stream_interface *si, struct applet *applet)
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100310{
311 struct appctx *appctx;
312
313 si_release_endpoint(si);
Emeric Brun1138fd02017-06-19 12:38:55 +0200314 appctx = appctx_new(applet, tid_bit);
Willy Tarreau10d81b82018-05-31 14:44:25 +0200315 if (appctx) {
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100316 si_attach_appctx(si, appctx);
Willy Tarreau10d81b82018-05-31 14:44:25 +0200317 appctx->t->nice = si_strm(si)->task->nice;
318 }
Willy Tarreau0a23bcb2013-12-01 11:31:38 +0100319
320 return appctx;
321}
322
Willy Tarreau73b013b2012-05-21 16:31:45 +0200323/* Sends a shutr to the connection using the data layer */
324static inline void si_shutr(struct stream_interface *si)
325{
Willy Tarreau6fe15412013-09-29 15:16:03 +0200326 si->ops->shutr(si);
Willy Tarreau73b013b2012-05-21 16:31:45 +0200327}
328
329/* Sends a shutw to the connection using the data layer */
330static inline void si_shutw(struct stream_interface *si)
331{
Willy Tarreau6fe15412013-09-29 15:16:03 +0200332 si->ops->shutw(si);
Willy Tarreau73b013b2012-05-21 16:31:45 +0200333}
334
Willy Tarreau5d5b2fe2015-09-25 10:59:38 +0200335/* Updates the stream interface and timers, then updates the data layer below */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200336static inline void si_update(struct stream_interface *si)
337{
Willy Tarreau5d5b2fe2015-09-25 10:59:38 +0200338 stream_int_update(si);
Willy Tarreau33552032015-09-24 18:05:45 +0200339 if (si->ops->update)
340 si->ops->update(si);
Willy Tarreau73b013b2012-05-21 16:31:45 +0200341}
342
343/* Calls chk_rcv on the connection using the data layer */
344static inline void si_chk_rcv(struct stream_interface *si)
345{
Willy Tarreauc5788912012-08-24 18:12:41 +0200346 si->ops->chk_rcv(si);
Willy Tarreau73b013b2012-05-21 16:31:45 +0200347}
348
349/* Calls chk_snd on the connection using the data layer */
350static inline void si_chk_snd(struct stream_interface *si)
351{
Willy Tarreauc5788912012-08-24 18:12:41 +0200352 si->ops->chk_snd(si);
Willy Tarreau73b013b2012-05-21 16:31:45 +0200353}
354
355/* Calls chk_snd on the connection using the ctrl layer */
356static inline int si_connect(struct stream_interface *si)
357{
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200358 struct conn_stream *cs = objt_cs(si->end);
359 struct connection *conn = cs_conn(cs);
Willy Tarreaue7dff022015-04-03 01:14:29 +0200360 int ret = SF_ERR_NONE;
Willy Tarreau14f8e862012-08-30 22:23:13 +0200361
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200362 if (unlikely(!conn || !conn->ctrl || !conn->ctrl->connect))
Willy Tarreaue7dff022015-04-03 01:14:29 +0200363 return SF_ERR_INTERNAL;
Willy Tarreau14f8e862012-08-30 22:23:13 +0200364
Willy Tarreaub490b4e2013-12-15 16:20:50 +0100365 if (!conn_ctrl_ready(conn) || !conn_xprt_ready(conn)) {
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100366 ret = conn->ctrl->connect(conn, !channel_is_empty(si_oc(si)), 0);
Willy Tarreaue7dff022015-04-03 01:14:29 +0200367 if (ret != SF_ERR_NONE)
Willy Tarreaub490b4e2013-12-15 16:20:50 +0100368 return ret;
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100369
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100370 /* we're in the process of establishing a connection */
371 si->state = SI_ST_CON;
Willy Tarreaub490b4e2013-12-15 16:20:50 +0100372 }
Christopher Fauletc34d19f2015-12-23 09:33:35 +0100373 else {
374 /* reuse the existing connection */
375 if (!channel_is_empty(si_oc(si))) {
376 /* we'll have to send a request there. */
Olivier Houchard9aaf7782017-09-13 18:30:23 +0200377 cs_want_send(cs);
Christopher Fauletc34d19f2015-12-23 09:33:35 +0100378 }
Willy Tarreau9e5a3aa2013-12-31 23:32:12 +0100379
380 /* the connection is established */
381 si->state = SI_ST_EST;
Willy Tarreaub490b4e2013-12-15 16:20:50 +0100382 }
Willy Tarreau14f8e862012-08-30 22:23:13 +0200383
384 /* needs src ip/port for logging */
385 if (si->flags & SI_FL_SRC_ADDR)
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200386 conn_get_from_addr(conn);
Willy Tarreau14f8e862012-08-30 22:23:13 +0200387
Willy Tarreau14f8e862012-08-30 22:23:13 +0200388 return ret;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200389}
Willy Tarreau59b94792012-05-11 16:16:40 +0200390
Willy Tarreau55e4ecd2012-12-08 17:48:47 +0100391/* for debugging, reports the stream interface state name */
392static inline const char *si_state_str(int state)
393{
394 switch (state) {
395 case SI_ST_INI: return "INI";
396 case SI_ST_REQ: return "REQ";
397 case SI_ST_QUE: return "QUE";
398 case SI_ST_TAR: return "TAR";
399 case SI_ST_ASS: return "ASS";
400 case SI_ST_CON: return "CON";
401 case SI_ST_CER: return "CER";
402 case SI_ST_EST: return "EST";
403 case SI_ST_DIS: return "DIS";
404 case SI_ST_CLO: return "CLO";
405 default: return "???";
406 }
407}
408
Willy Tarreaucff64112008-11-03 06:26:53 +0100409#endif /* _PROTO_STREAM_INTERFACE_H */
410
411/*
412 * Local variables:
413 * c-indent-level: 8
414 * c-basic-offset: 8
415 * End:
416 */