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static int clientsocket(const char *rhost, unsigned short port)
{
  struct hostent *ptrh;  /* pointer to a host table entry     */
  struct sockaddr_in sad;/* structure to hold server's address*/
  int    fd;             /* socket descriptor                 */

  memset((char *)&sad, 0, sizeof(sad)); /* clear sockaddr structure */
  sad.sin_port = htons((u_short)port); 

	struct in_addr myaddr;

	if (inet_aton(rhost, &myaddr))
	{
		// setup 'sa' with binarified address and a couple other things
		sad.sin_family= PF_INET;
		sad.sin_len = sizeof (struct sockaddr_in);
		sad.sin_port= htons (port);
		memcpy ((char *) &sad.sin_addr, &myaddr.s_addr, sizeof(struct in_addr));
	}
	else
	{
		/* Convert host name to equivalent IP address and copy sad */
		sad.sin_family = AF_INET;  /* set family to Internet */
		ptrh = net_gethostbyname(rhost);
		if (((char *)ptrh) == NULL)
		{
			fprintf(stderr, "invalid host: %s\n", rhost);
			return (-1);
		}
		memcpy(&sad.sin_addr, ptrh->h_addr, ptrh->h_length);
	}
  
  /* Create a socket */
  fd = net_socket(PF_INET, SOCK_STREAM, 0);
  if (fd < 0) {
    fprintf(stderr, "socket creation failed\n");
    return (-1);;
  }
  
  /* Connect the socket to the specified server */
  if (net_connect(fd, (struct sockaddr *)&sad, sizeof(sad)) < 0) {
    fprintf(stderr, "connect failed\n");
    return (-1);
  }

  return fd;
}