daytimetcpsrv.lc

Unix 时间服务器

#include    "unp.h"##  1 ##src/intro/daytimetcpsrv.c##
#include    <time.h>##  2 ##src/intro/daytimetcpsrv.c##

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

    listenfd = Socket(AF_INET, SOCK_STREAM, 0);## 10 ##src/intro/daytimetcpsrv.c##

    bzero(&servaddr, sizeof(servaddr));## 11 ##src/intro/daytimetcpsrv.c##
    servaddr.sin_family = AF_INET;## 12 ##src/intro/daytimetcpsrv.c##
    servaddr.sin_addr.s_addr = htonl(INADDR_ANY);## 13 ##src/intro/daytimetcpsrv.c##
    servaddr.sin_port = htons(13);  /* daytime server */## 14 ##src/intro/daytimetcpsrv.c##

    Bind(listenfd, (SA *) &servaddr, sizeof(servaddr));## 15 ##src/intro/daytimetcpsrv.c##

    Listen(listenfd, LISTENQ);## 16 ##src/intro/daytimetcpsrv.c##

    for (;;) {## 17 ##src/intro/daytimetcpsrv.c##
        connfd = Accept(listenfd, (SA *) NULL, NULL);## 18 ##src/intro/daytimetcpsrv.c##

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

        Close(connfd);## 22 ##src/intro/daytimetcpsrv.c##
    }## 23 ##src/intro/daytimetcpsrv.c##
}## 24 ##src/intro/daytimetcpsrv.c##