1/*
2 * Copyright (c) 2002-2007 Niels Provos <provos@citi.umich.edu>
3 * Copyright (c) 2007-2013 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#include "event2/event-config.h"
28
29#ifdef _WIN32
30#include <winsock2.h>
31#else
32#include <unistd.h>
33#endif
34#include <sys/types.h>
35#include <sys/stat.h>
36#ifdef EVENT__HAVE_SYS_TIME_H
37#include <sys/time.h>
38#endif
39#ifdef EVENT__HAVE_SYS_SOCKET_H
40#include <sys/socket.h>
41#endif
42#include <fcntl.h>
43#include <stdlib.h>
44#include <stdio.h>
45#include <string.h>
46#include <errno.h>
47
48#include <event.h>
49#include <evutil.h>
50
51#ifdef EVENT____func__
52#define __func__ EVENT____func__
53#endif
54
55struct timeval timeout = {3, 0};
56
57static void
58closed_cb(evutil_socket_t fd, short event, void *arg)
59{
60	if (EV_TIMEOUT & event) {
61		printf("%s: Timeout!\n", __func__);
62		exit(1);
63	}
64
65	if (EV_CLOSED & event) {
66		printf("%s: detected socket close with success\n", __func__);
67		return;
68	}
69
70	printf("%s: unable to detect socket close\n", __func__);
71	exit(1);
72}
73
74#ifndef SHUT_WR
75#define SHUT_WR 1
76#endif
77
78int
79main(int argc, char **argv)
80{
81	struct event_base *base;
82	struct event_config *cfg;
83	struct event *ev;
84	const char *test = "test string";
85	evutil_socket_t pair[2];
86
87	/* Initialize the library and check if the backend
88	   supports EV_FEATURE_EARLY_CLOSE
89	*/
90	cfg = event_config_new();
91	event_config_require_features(cfg, EV_FEATURE_EARLY_CLOSE);
92	base = event_base_new_with_config(cfg);
93	event_config_free(cfg);
94	if (!base) {
95		/* Backend doesn't support EV_FEATURE_EARLY_CLOSE */
96		return 0;
97	}
98
99	/* Create a pair of sockets */
100	if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1)
101		return (1);
102
103	/* Send some data on socket 0 and immediately close it */
104	if (send(pair[0], test, (int)strlen(test)+1, 0) < 0)
105		return (1);
106	shutdown(pair[0], SHUT_WR);
107
108	/* Dispatch */
109	ev = event_new(base, pair[1], EV_CLOSED | EV_TIMEOUT, closed_cb, event_self_cbarg());
110	event_add(ev, &timeout);
111	event_base_dispatch(base);
112
113	/* Finalize library */
114	event_base_free(base);
115	return 0;
116}
117
118