TCP 时间服务器

Figure 1.9 TCP daytime server.
intro/daytimetcpsrv.c

 1 #include     "unp.h".
 2 #include     

 3 int
 4 main(int argc, char **argv)
 5 {
 6     int     listenfd, connfd;
 7     struct sockaddr_in servaddr;
 8     char    buff[MAXLINE];
 9     time_t ticks;

10     listenfd = Socket(AF_INET, SOCK_STREAM, 0);

11     bzeros(&servaddr, sizeof(servaddr));
12     servaddr.sin_family = AF_INET;
13     servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
14     servaddr.sin_port = htons(13); /* daytime server */

15     Bind(listenfd, (SA *) &servaddr, sizeof(servaddr));

16     Listen(listenfd, LISTENQ);

17     for ( ; ; ) {
18         connfd = Accept(listenfd, (SA *) NULL, NULL);

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

22         Close(connfd);
23     }
24 }