OSC2.py 文件源码

def _receiveMsg(self):
        """ Receive OSC message from a socket and decode.
        If an error occurs, None is returned, else the message.
        """
        # get OSC packet size from stream which is prepended each transmission
        chunk = self._receive(4)
        if chunk == None:
            print "SERVER: Socket has been closed."
            return None
        # extract message length from big endian unsigned long (32 bit) 
        slen = struct.unpack(">L", chunk)[0]
        # receive the actual message
        chunk = self._receive(slen)
        if chunk == None:
            print "SERVER: Socket has been closed."
            return None
        # decode OSC data and dispatch
        msg = decodeOSC(chunk)
        if msg == None:
            raise OSCError("SERVER: Message decoding failed.")      
        return msg