def prepare(self, message, sentArgs=[]):
"""
Prepare the datagram that would get sent in order to send this message
to its designated channel.
"""
assert self.notify.debugCall()
# Make sure the message is registered:
if message not in self.__message2type:
self.notify.error('Tried to send unregistered message %s!' % message)
return
datagram = PyDatagram()
# To:
datagram.addUint8(1)
datagram.addChannel(self.__message2channel[message])
# From:
datagram.addChannel(self.air.ourChannel)
messageType=self.__message2type[message]
datagram.addUint16(messageType)
datagram.addBlob(dumps(sentArgs))
return datagram
