/* * Copyright (C) 2012-2013 Michael Tuexen * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Usage: daytime_server [local_encaps_port] [remote_encaps_port] * * Example * Server: $ ./daytime_server 11111 22222 * Client: $ ./client 127.0.0.1 13 0 22222 11111 */ #ifdef _WIN32 #define _CRT_SECURE_NO_WARNINGS #endif #include #include #include #include #include #include #ifndef _WIN32 #include #include #include #include #endif #include #include "programs_helper.h" #define PORT 13 #define DAYTIME_PPID 40 #define SLEEP 1 int main(int argc, char *argv[]) { struct socket *sock, *conn_sock; struct sockaddr_in addr; struct sctp_udpencaps encaps; socklen_t addr_len; char buffer[80]; time_t now; struct sctp_sndinfo sndinfo; if (argc > 1) { usrsctp_init(atoi(argv[1]), NULL, debug_printf_stack); } else { usrsctp_init(9899, NULL, debug_printf_stack); } #ifdef SCTP_DEBUG usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE); #endif usrsctp_sysctl_set_sctp_blackhole(2); usrsctp_sysctl_set_sctp_no_csum_on_loopback(0); if ((sock = usrsctp_socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP, NULL, NULL, 0, NULL)) == NULL) { perror("usrsctp_socket"); } if (argc > 2) { memset(&encaps, 0, sizeof(struct sctp_udpencaps)); encaps.sue_address.ss_family = AF_INET; encaps.sue_port = htons(atoi(argv[2])); if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_REMOTE_UDP_ENCAPS_PORT, (const void*)&encaps, (socklen_t)sizeof(struct sctp_udpencaps)) < 0) { perror("setsockopt"); } } memset((void *)&addr, 0, sizeof(struct sockaddr_in)); #ifdef HAVE_SIN_LEN addr.sin_len = sizeof(struct sockaddr_in); #endif addr.sin_family = AF_INET; addr.sin_port = htons(PORT); addr.sin_addr.s_addr = htonl(INADDR_ANY); if (usrsctp_bind(sock, (struct sockaddr *)&addr, sizeof(struct sockaddr_in)) < 0) { perror("usrsctp_bind"); } if (usrsctp_listen(sock, 1) < 0) { perror("usrsctp_listen"); } while (1) { addr_len = 0; if ((conn_sock = usrsctp_accept(sock, NULL, &addr_len)) == NULL) { continue; } time(&now); #ifdef _WIN32 if (_snprintf(buffer, sizeof(buffer), "%s", ctime(&now)) < 0) { #else if (snprintf(buffer, sizeof(buffer), "%s", ctime(&now)) < 0) { #endif buffer[0] = '\0'; } sndinfo.snd_sid = 0; sndinfo.snd_flags = 0; sndinfo.snd_ppid = htonl(DAYTIME_PPID); sndinfo.snd_context = 0; sndinfo.snd_assoc_id = 0; if (usrsctp_sendv(conn_sock, buffer, strlen(buffer), NULL, 0, (void *)&sndinfo, (socklen_t)sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0) < 0) { perror("usrsctp_sendv"); } usrsctp_close(conn_sock); } return (0); }