http://www.youtube.com/watch?v=v3wOMXZykrE

/* Sample TCP server */

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

int main(int argc, char**argv)
{
   int listenfd,connfd,n;
   struct sockaddr_in servaddr,cliaddr;
   socklen_t clilen;
   pid_t childpid;
   char mesg[256];

   listenfd=socket(AF_INET,SOCK_STREAM,0);

   bzero(&servaddr,sizeof(servaddr));
   servaddr.sin_family = AF_INET;
   servaddr.sin_addr.s_addr=htonl(INADDR_ANY);
   servaddr.sin_port=htons(7777);
   bind(listenfd,(struct sockaddr *)&servaddr,sizeof(servaddr));

   listen(listenfd,1024);

   for(;;)
   {
      clilen=sizeof(cliaddr);
      connfd = accept(listenfd,(struct sockaddr *)&cliaddr,&clilen);

      if ((childpid = fork()) == 0)
      {
         close (listenfd);

         for(;;)
         {
            n = recvfrom(connfd,mesg,1000,0,(struct sockaddr *)&cliaddr,&clilen);
            sendto(connfd,mesg,n,0,(struct sockaddr *)&cliaddr,sizeof(cliaddr));
            printf(\"-------------------------------------------------------\n\");
            mesg[n] = 0;
            printf(\"Received the following:\n\");
            printf(\"%s\", mesg);
            printf(\"-------------------------------------------------------\n\");
         }
         
      }
     close(connfd);
     &main;
   }
}

http://www.megaupload.com/?d=08HMGW3D