libevent-2.1.12-stable
listener.h
1 /*
2  * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
3  * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  * derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 #ifndef EVENT2_LISTENER_H_INCLUDED_
28 #define EVENT2_LISTENER_H_INCLUDED_
29 
30 #include <event2/visibility.h>
31 
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35 
36 #include <event2/event.h>
37 
38 struct sockaddr;
39 struct evconnlistener;
40 
50 typedef void (*evconnlistener_cb)(struct evconnlistener *, evutil_socket_t, struct sockaddr *, int socklen, void *);
51 
58 typedef void (*evconnlistener_errorcb)(struct evconnlistener *, void *);
59 
62 #define LEV_OPT_LEAVE_SOCKETS_BLOCKING (1u<<0)
65 #define LEV_OPT_CLOSE_ON_FREE (1u<<1)
67 #define LEV_OPT_CLOSE_ON_EXEC (1u<<2)
70 #define LEV_OPT_REUSEABLE (1u<<3)
73 #define LEV_OPT_THREADSAFE (1u<<4)
76 #define LEV_OPT_DISABLED (1u<<5)
90 #define LEV_OPT_DEFERRED_ACCEPT (1u<<6)
99 #define LEV_OPT_REUSEABLE_PORT (1u<<7)
111 #define LEV_OPT_BIND_IPV6ONLY (1u<<8)
112 
130 EVENT2_EXPORT_SYMBOL
131 struct evconnlistener *evconnlistener_new(struct event_base *base,
132  evconnlistener_cb cb, void *ptr, unsigned flags, int backlog,
133  evutil_socket_t fd);
149 EVENT2_EXPORT_SYMBOL
150 struct evconnlistener *evconnlistener_new_bind(struct event_base *base,
151  evconnlistener_cb cb, void *ptr, unsigned flags, int backlog,
152  const struct sockaddr *sa, int socklen);
156 EVENT2_EXPORT_SYMBOL
157 void evconnlistener_free(struct evconnlistener *lev);
161 EVENT2_EXPORT_SYMBOL
162 int evconnlistener_enable(struct evconnlistener *lev);
166 EVENT2_EXPORT_SYMBOL
167 int evconnlistener_disable(struct evconnlistener *lev);
168 
170 EVENT2_EXPORT_SYMBOL
171 struct event_base *evconnlistener_get_base(struct evconnlistener *lev);
172 
174 EVENT2_EXPORT_SYMBOL
175 evutil_socket_t evconnlistener_get_fd(struct evconnlistener *lev);
176 
179 EVENT2_EXPORT_SYMBOL
180 void evconnlistener_set_cb(struct evconnlistener *lev,
181  evconnlistener_cb cb, void *arg);
182 
184 EVENT2_EXPORT_SYMBOL
185 void evconnlistener_set_error_cb(struct evconnlistener *lev,
186  evconnlistener_errorcb errorcb);
187 
188 #ifdef __cplusplus
189 }
190 #endif
191 
192 #endif
Core functions for waiting for and receiving events, and using event bases.
Structure to hold information and state for a Libevent dispatch loop.
Definition: event.h:219
#define evutil_socket_t
A type wide enough to hold the output of "socket()" or "accept()".
Definition: util.h:310