1 /* 2 * Copyright (c) 2002-2007 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 #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 <signal.h> 47 #include <errno.h> 48 49 #include "event2/event.h" 50 #include "event2/event_struct.h" 51 #include "event2/event_compat.h" 52 #include "event2/util.h" 53 54 #ifdef EVENT____func__ 55 #define __func__ EVENT____func__ 56 #endif 57 58 evutil_socket_t pair[2]; 59 int test_okay = 1; 60 int called = 0; 61 62 static void 63 write_cb(evutil_socket_t fd, short event, void *arg) 64 { 65 const char *test = "test string"; 66 int len; 67 68 len = send(fd, test, (int)strlen(test) + 1, 0); 69 70 printf("%s: write %d%s\n", __func__, 71 len, len ? "" : " - means EOF"); 72 73 if (len > 0) { 74 if (!called) 75 event_add(arg, NULL); 76 evutil_closesocket(pair[0]); 77 } else if (called == 1) 78 test_okay = 0; 79 80 called++; 81 } 82 83 int 84 main(int argc, char **argv) 85 { 86 struct event ev; 87 88 #ifdef _WIN32 89 WORD wVersionRequested; 90 WSADATA wsaData; 91 92 wVersionRequested = MAKEWORD(2, 2); 93 94 (void) WSAStartup(wVersionRequested, &wsaData); 95 #endif 96 97 #ifndef _WIN32 98 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) 99 return (1); 100 #endif 101 102 if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1) 103 return (1); 104 105 /* Initalize the event library */ 106 event_init(); 107 108 /* Initalize one event */ 109 event_set(&ev, pair[1], EV_WRITE, write_cb, &ev); 110 111 event_add(&ev, NULL); 112 113 event_dispatch(); 114 115 return (test_okay); 116 } 117 118