int socket_fd;

    struct sockaddr_in sin;

    socket_fd = socket(AF_INET,SOCK_STREAM,0);

    if(socket_fd ==-1)

    {

        return -1;

    }

    bzero(&sin, sizeof(sin));

    sin.sin_family = AF_INET;

    sin.sin_port=htons(port);

    inet_pton(AF_INET,"0.0.0.0",&sin.sin_addr);

    if(bind(socket_fd,(struct sockaddr*)&sin,sizeof(struct sockaddr))<0)

    {

        printf("The current sport is occupied !!");

      close(socket_fd);

        return -1;

    }

    close(socket_fd);

    return 0;

本文转自 Linux_woniu 51CTO博客，原文链接:http://blog.51cto.com/linuxcgi/1981208