guacamole.py 文件源码

def _test_vnc(host, port, timeout=3):
    """
    Test VNC connection.
    """
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.settimeout(timeout)

    try:
        sock.connect((host, port))

        if sock.recv(1024).startswith('RFB'):
            return True
    except (socket.error, socket.timeout, socket.herror, socket.gaierror) as err:
        logger.warning('Error "%s" when testing VNC on "%s:%s"', err, host, port)

    finally:
        sock.close()

    return False