daytimetcpsrv2.c

unix网络编程卷1：套接口API的全书源码

#include	"unp.h"
#include	<time.h>

int
main(int argc, char **argv)
{
	int				listenfd, connfd;
	socklen_t		len, addrlen;
	char			buff[MAXLINE];
	time_t			ticks;
	struct sockaddr_storage	cliaddr;

	if (argc == 2)
		listenfd = Tcp_listen(NULL, argv[1], &addrlen);
	else if (argc == 3)
		listenfd = Tcp_listen(argv[1], argv[2], &addrlen);
	else
		err_quit("usage: daytimetcpsrv2 [ <host> ] <service or port>");

	for ( ; ; ) {
		len = sizeof(cliaddr);
		connfd = Accept(listenfd, (SA *)&cliaddr, &len);
		printf("connection from %s\n", Sock_ntop((SA *)&cliaddr, len));

		ticks = time(NULL);
		snprintf(buff, sizeof(buff), "%.24s\r\n", ctime(&ticks));
		Write(connfd, buff, strlen(buff));

		Close(connfd);
	}
}