Sample UDP Receive Program
1/********************************************************
2* udprecv.c
3* Receives a series of messages from a Serial Adapter using UDP.
4*
5*******************************************************/
7#include <sys/types.h>
8#include <sys/socket.h>
9#include <netinet/in.h>
10#include <stdio.h>
12main()
13{
14int sock, length, nbytes;
15struct sockaddr_in name;
16char buf[1024];
17FILE *logfile;
19/* Open the log file */
20logfile= fopen(“proxlink.log”, “wb”);
21if (!logfile) {
22printf(“Error: Couldn’t open log file\n”);
23exit(4);
24}
25
26/* Create socket from which to read */
27sock= socket(AF_INET, SOCK_DGRAM, 0);
28if (sock < 0) {
29perror(“opening datagram socket”);
30exit(1);
31}
32
33/* Create a name with “wildcards”: The machine will assign its
34IP address and a port number. */
35name.sin_family= AF_INET;
36name.sin_addr.s_addr= INADDR_ANY;
37name.sin_port= 0;
38
39/* The bind() call associates a local IP address and port number
40with the socket */
96
