#include	"unp.h"voiddg_cli(FILE *fp, int sockfd, const SA *pservaddr, socklen_t servlen){	int	n;	char	sendline[MAXLINE], recvline[MAXLINE + 1];	while (Fgets(sendline, MAXLINE, fp) != NULL) {		Sendto(sockfd, sendline, strlen(sendline), 0, pservaddr, servlen);		if (Readable_timeo(sockfd, 5) == 0) {			fprintf(stderr, "socket timeout\n");		} else {			n = Recvfrom(sockfd, recvline, MAXLINE, 0, NULL, NULL);			recvline[n] = 0;	/* null terminate */			Fputs(recvline, stdout);		}	}}