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