tcpcli03.lc

unix网络编程卷1：套接口API的全书源码

#include    "unp.h"##  1 ##src/nonblock/tcpcli03.c##

int##  2 ##src/nonblock/tcpcli03.c##
main(int argc, char **argv)##  3 ##src/nonblock/tcpcli03.c##
{##  4 ##src/nonblock/tcpcli03.c##
    int     sockfd;##  5 ##src/nonblock/tcpcli03.c##
    struct linger ling;##  6 ##src/nonblock/tcpcli03.c##
    struct sockaddr_in servaddr;##  7 ##src/nonblock/tcpcli03.c##

    if (argc != 2)##  8 ##src/nonblock/tcpcli03.c##
        err_quit("usage: tcpcli <IPaddress>");##  9 ##src/nonblock/tcpcli03.c##

    sockfd = Socket(AF_INET, SOCK_STREAM, 0);## 10 ##src/nonblock/tcpcli03.c##

    bzero(&servaddr, sizeof(servaddr));## 11 ##src/nonblock/tcpcli03.c##
    servaddr.sin_family = AF_INET;## 12 ##src/nonblock/tcpcli03.c##
    servaddr.sin_port = htons(SERV_PORT);## 13 ##src/nonblock/tcpcli03.c##
    Inet_pton(AF_INET, argv[1], &servaddr.sin_addr);## 14 ##src/nonblock/tcpcli03.c##

    Connect(sockfd, (SA *) &servaddr, sizeof(servaddr));## 15 ##src/nonblock/tcpcli03.c##

    ling.l_onoff = 1;           /* cause RST to be sent on close() */## 16 ##src/nonblock/tcpcli03.c##
    ling.l_linger = 0;## 17 ##src/nonblock/tcpcli03.c##
    Setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &ling, sizeof(ling));## 18 ##src/nonblock/tcpcli03.c##
    Close(sockfd);## 19 ##src/nonblock/tcpcli03.c##

    exit(0);## 20 ##src/nonblock/tcpcli03.c##
}## 21 ##src/nonblock/tcpcli03.c##