libevent
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_
28 #define _EVENT2_LISTENER_H_
29 
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33 
34 #include <event2/event.h>
35 
36 struct sockaddr;
37 struct evconnlistener;
38 
48 typedef void (*evconnlistener_cb)(struct evconnlistener *, evutil_socket_t, struct sockaddr *, int socklen, void *);
49 
56 typedef void (*evconnlistener_errorcb)(struct evconnlistener *, void *);
57 
60 #define LEV_OPT_LEAVE_SOCKETS_BLOCKING (1u<<0)
61 
63 #define LEV_OPT_CLOSE_ON_FREE (1u<<1)
64 
65 #define LEV_OPT_CLOSE_ON_EXEC (1u<<2)
66 
68 #define LEV_OPT_REUSEABLE (1u<<3)
69 
71 #define LEV_OPT_THREADSAFE (1u<<4)
72 
90 struct evconnlistener *evconnlistener_new(struct event_base *base,
91  evconnlistener_cb cb, void *ptr, unsigned flags, int backlog,
92  evutil_socket_t fd);
108 struct evconnlistener *evconnlistener_new_bind(struct event_base *base,
109  evconnlistener_cb cb, void *ptr, unsigned flags, int backlog,
110  const struct sockaddr *sa, int socklen);
114 void evconnlistener_free(struct evconnlistener *lev);
118 int evconnlistener_enable(struct evconnlistener *lev);
122 int evconnlistener_disable(struct evconnlistener *lev);
123 
125 struct event_base *evconnlistener_get_base(struct evconnlistener *lev);
126 
128 evutil_socket_t evconnlistener_get_fd(struct evconnlistener *lev);
129 
132 void evconnlistener_set_cb(struct evconnlistener *lev,
133  evconnlistener_cb cb, void *arg);
134 
136 void evconnlistener_set_error_cb(struct evconnlistener *lev,
137  evconnlistener_errorcb errorcb);
138 
139 #ifdef __cplusplus
140 }
141 #endif
142 
143 #endif
#define evutil_socket_t
A type wide enough to hold the output of "socket()" or "accept()".
Definition: util.h:274
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:213