#include	"unp.h"#include	<sys/devpoll.h>voidstr_cli(FILE *fp, int sockfd){	int		stdineof;	char		buf[MAXLINE];	int		n;	int		wfd;	struct pollfd	pollfd[2];	struct dvpoll	dopoll;	int		i;	int		result;	wfd = Open("/dev/poll", O_RDWR, 0);	pollfd[0].fd = fileno(fp);	pollfd[0].events = POLLIN;	pollfd[0].revents = 0;	pollfd[1].fd = sockfd;	pollfd[1].events = POLLIN;	pollfd[1].revents = 0;	Write(wfd, pollfd, sizeof(struct pollfd) * 2);	stdineof = 0;	for ( ; ; ) {		/* block until /dev/poll says something is ready */		dopoll.dp_timeout = -1;		dopoll.dp_nfds = 2;		dopoll.dp_fds = pollfd;		result = Ioctl(wfd, DP_POLL, &dopoll);		/* loop through ready file descriptors */		for (i = 0; i < result; i++) {			if (dopoll.dp_fds[i].fd == sockfd) {				/* socket is readable */				if ( (n = Read(sockfd, buf, MAXLINE)) == 0) {					if (stdineof == 1)						return;		/* normal termination */					else						err_quit("str_cli: server terminated prematurely");				}				Write(fileno(stdout), buf, n);			} else {				/* input is readable */				if ( (n = Read(fileno(fp), buf, MAXLINE)) == 0) {					stdineof = 1;					Shutdown(sockfd, SHUT_WR);	/* send FIN */					continue;				}				Writen(sockfd, buf, n);			}		}	}}