检查源端口被占用

    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,"127.0.0.1",&sin.sin_addr);

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

    {

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

        return -1;

    }

    close(socket_fd);

    return 0;

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检查源端口被占用

原文：http://linuxcgi.blog.51cto.com/5925801/1981208