1/* $NetBSD: test-closed.c,v 1.1.1.2 2021/04/07 02:43:15 christos Exp $ */ 2/* 3 * Copyright (c) 2002-2007 Niels Provos <provos@citi.umich.edu> 4 * Copyright (c) 2007-2013 Niels Provos and Nick Mathewson 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28#include "../util-internal.h" 29#include "event2/event-config.h" 30#include <sys/cdefs.h> 31__RCSID("$NetBSD: test-closed.c,v 1.1.1.2 2021/04/07 02:43:15 christos Exp $"); 32 33#ifdef _WIN32 34#include <winsock2.h> 35#else 36#include <unistd.h> 37#endif 38#include <sys/types.h> 39#include <sys/stat.h> 40#ifdef EVENT__HAVE_SYS_TIME_H 41#include <sys/time.h> 42#endif 43#ifdef EVENT__HAVE_SYS_SOCKET_H 44#include <sys/socket.h> 45#endif 46#include <fcntl.h> 47#include <stdlib.h> 48#include <stdio.h> 49#include <string.h> 50#include <errno.h> 51 52#include <event.h> 53#include <evutil.h> 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 74int 75main(int argc, char **argv) 76{ 77 struct event_base *base; 78 struct event_config *cfg; 79 struct event *ev; 80 const char *test = "test string"; 81 evutil_socket_t pair[2]; 82 83 /* Initialize the library and check if the backend 84 supports EV_FEATURE_EARLY_CLOSE 85 */ 86 cfg = event_config_new(); 87 event_config_require_features(cfg, EV_FEATURE_EARLY_CLOSE); 88 base = event_base_new_with_config(cfg); 89 event_config_free(cfg); 90 if (!base) { 91 /* Backend doesn't support EV_FEATURE_EARLY_CLOSE */ 92 return 0; 93 } 94 95 /* Create a pair of sockets */ 96 if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1) 97 return (1); 98 99 /* Send some data on socket 0 and immediately close it */ 100 if (send(pair[0], test, (int)strlen(test)+1, 0) < 0) 101 return (1); 102 shutdown(pair[0], EVUTIL_SHUT_WR); 103 104 /* Dispatch */ 105 ev = event_new(base, pair[1], EV_CLOSED | EV_TIMEOUT, closed_cb, event_self_cbarg()); 106 event_add(ev, &timeout); 107 event_base_dispatch(base); 108 109 /* Finalize library */ 110 event_free(ev); 111 event_base_free(base); 112 return 0; 113} 114 115