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Sample TCP Send Program
1 /*******************************************************
2 * tcpsend.c
3 * Sends a message to a Serial Adapter using TCP
4 *
5 *******************************************************/
6
7 #include <sys/types.h>
8 #include <sys/socket.h>
9 #include <netinet/in.h>
10 #include <netdb.h>
11 #include <stdio.h>
12
13 #define DATA “Half a league, half a league...”
14 #define DATA1 0
15
16 main(argc, argv)
17 int argc;
18 char *argv[];
19 {
20 int sock;
21 short dataLength;
22 struct sockaddr_in server;
23 struct hostent *hp, *gethostbyname();
24 char buf[1024];
25
26 if (argc < 3) {
27 printf(“Usage: tcpsend hostname port#\n”);
28 exit(3);
29 }
30
31 /* Create socket. */
32 sock= socket(AF_INET, SOCK_STREAM, 0);
33 if (sock < 0) {
34 perror(“opening stream socket”);
35 exit(1);
36 }
37
38 /* Connect socket using name specified on command line */
39 server.sin_family= AF_INET;