NetBIOSProtocol.py 文件源码

def __init__(self, broadcast = True, listen_port = 0):
        """
        Instantiate a NBNSProtocol instance.

        This automatically calls reactor.listenUDP method to start listening for incoming packets, so you **must not** call the listenUDP method again.

        :param boolean broadcast: A boolean flag to indicate if we should setup the listening UDP port in broadcast mode
        :param integer listen_port: Specifies the UDP port number to bind to for listening. If zero, OS will automatically select a free port number.
        """
        self.broadcast = broadcast
        self.pending_trns = { }  # TRN ID -> ( expiry_time, name, Deferred instance )
        self.transport = reactor.listenUDP(listen_port, self)
        if self.broadcast:
            self.transport.getHandle().setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
        reactor.callLater(1, self.cleanupPendingTrns)