1 /*
2 * Copyright (C) 2012-2013 Michael Tuexen
3 *
4 * All rights reserved.
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. Neither the name of the project nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 /*
32 * Usage: daytime_server [local_encaps_port] [remote_encaps_port]
33 *
34 * Example
35 * Server: $ ./daytime_server 11111 22222
36 * Client: $ ./client 127.0.0.1 13 0 22222 11111
37 */
38
39 #ifdef _WIN32
40 #define _CRT_SECURE_NO_WARNINGS
41 #endif
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <stdarg.h>
46 #include <sys/types.h>
47 #include <time.h>
48 #ifndef _WIN32
49 #include <unistd.h>
50 #include <sys/socket.h>
51 #include <netinet/in.h>
52 #include <arpa/inet.h>
53 #endif
54 #include <usrsctp.h>
55 #include "programs_helper.h"
56
57 #define PORT 13
58 #define DAYTIME_PPID 40
59 #define SLEEP 1
60
61 int
main(int argc,char * argv[])62 main(int argc, char *argv[])
63 {
64 struct socket *sock, *conn_sock;
65 struct sockaddr_in addr;
66 struct sctp_udpencaps encaps;
67 socklen_t addr_len;
68 char buffer[80];
69 time_t now;
70 struct sctp_sndinfo sndinfo;
71
72 if (argc > 1) {
73 usrsctp_init(atoi(argv[1]), NULL, debug_printf_stack);
74 } else {
75 usrsctp_init(9899, NULL, debug_printf_stack);
76 }
77 #ifdef SCTP_DEBUG
78 usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE);
79 #endif
80 usrsctp_sysctl_set_sctp_blackhole(2);
81 usrsctp_sysctl_set_sctp_no_csum_on_loopback(0);
82
83 if ((sock = usrsctp_socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP, NULL, NULL, 0, NULL)) == NULL) {
84 perror("usrsctp_socket");
85 }
86 if (argc > 2) {
87 memset(&encaps, 0, sizeof(struct sctp_udpencaps));
88 encaps.sue_address.ss_family = AF_INET;
89 encaps.sue_port = htons(atoi(argv[2]));
90 if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_REMOTE_UDP_ENCAPS_PORT, (const void*)&encaps, (socklen_t)sizeof(struct sctp_udpencaps)) < 0) {
91 perror("setsockopt");
92 }
93 }
94 memset((void *)&addr, 0, sizeof(struct sockaddr_in));
95 #ifdef HAVE_SIN_LEN
96 addr.sin_len = sizeof(struct sockaddr_in);
97 #endif
98 addr.sin_family = AF_INET;
99 addr.sin_port = htons(PORT);
100 addr.sin_addr.s_addr = htonl(INADDR_ANY);
101 if (usrsctp_bind(sock, (struct sockaddr *)&addr, sizeof(struct sockaddr_in)) < 0) {
102 perror("usrsctp_bind");
103 }
104 if (usrsctp_listen(sock, 1) < 0) {
105 perror("usrsctp_listen");
106 }
107 while (1) {
108 addr_len = 0;
109 if ((conn_sock = usrsctp_accept(sock, NULL, &addr_len)) == NULL) {
110 continue;
111 }
112 time(&now);
113 #ifdef _WIN32
114 _snprintf(buffer, sizeof(buffer), "%s", ctime(&now));
115 #else
116 snprintf(buffer, sizeof(buffer), "%s", ctime(&now));
117 #endif
118 sndinfo.snd_sid = 0;
119 sndinfo.snd_flags = 0;
120 sndinfo.snd_ppid = htonl(DAYTIME_PPID);
121 sndinfo.snd_context = 0;
122 sndinfo.snd_assoc_id = 0;
123 if (usrsctp_sendv(conn_sock, buffer, strlen(buffer), NULL, 0, (void *)&sndinfo,
124 (socklen_t)sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0) < 0) {
125 perror("usrsctp_sendv");
126 }
127 usrsctp_close(conn_sock);
128 }
129 usrsctp_close(sock);
130 while (usrsctp_finish() != 0) {
131 #ifdef _WIN32
132 Sleep(SLEEP * 1000);
133 #else
134 sleep(SLEEP);
135 #endif
136 }
137 return (0);
138 }
139