text: #include	"unp.h"
  
  void
  dg_cli(FILE *fp, int sockfd, const SA *pservaddr, socklen_t servlen)
  {
  	int				n;
  	char			sendline[MAXLINE], recvline[MAXLINE + 1];
  	socklen_t		len;
  	struct sockaddr_in	*replyaddr;
  
  	replyaddr = Malloc(servlen);
  
  	while (Fgets(sendline, MAXLINE, fp) != NULL) {
  
  		Sendto(sockfd, sendline, strlen(sendline), 0, pservaddr, servlen);
  
  		len = servlen;
  		n = Recvfrom(sockfd, recvline, MAXLINE, 0, (SA *) replyaddr, &len);
  		printf("received reply from %s, port %d\n",
  			   inet_ntoa(replyaddr->sin_addr), htons(replyaddr->sin_port));
  
  		recvline[n] = 0;	/* null terminate */
  		Fputs(recvline, stdout);
  	}
  }
  