def send_push_request(self, com, message):
envelope = Envelope()
envelope.type = Envelope.REQ_PUSH
envelope.message.dest = message.dest
envelope.message.src = message.src
envelope.message.payload = message.payload
envelope.message.timestamp = message.timestamp
com.send(envelope.SerializeToString())
def send_pull_request(self, com):
envelope = Envelope()
envelope.type = Envelope.REQ_PULL
com.send(envelope.SerializeToString())
