#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>

int main(void)
{
 struct sockaddr_in s_in;
 char dp[1024];
 unsigned short int port = 5000;
 const char *saddr = "192.168.11.153";
 int sd;        /* socket descriptor */
 int n;      /* number of send bytes */

 if ( sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) < 0 ) {
   perror("socket() error!");
   exit(1);
 }

 /* zero out structure */
 bzero(&s_in, sizeof(s_in));

 bzero(dp, sizeof(dp));

 /* fill in structure */
 s_in.sin_family = AF_INET;
 s_in.sin_port = htons(port);
 s_in.sin_addr.s_addr = inet_addr(saddr);   /* convert to long byte order */


 if ( (n = sendto(sd, dp, dp_len, 0, (struct sockaddr *)&s_in, sizeof(s_in))) < 0 ) {
   perror("sendto() error");
   exit(1);
 }
 

 close(sd);

 return 0;
}