def template_SerializeAndDeserialize(self, seq, ack, ackbits, payload):
d = UDPDatagram()
d.seq = seq
d.ack = ack
d.ackbits = ackbits
d.payload = payload
b = d.Serialize()
e = UDPDatagram()
e.Deserialize(b)
self.assertTrue(d == e)
def Send(self, payload):
'''
Argument:
payload-- The data to send.
Return value:
True if this method succeeded.
'''
assert len(payload) <= UDPDatagram.MAX_PAYLOAD
datagram = UDPDatagram()
datagram.seq = self.seq
datagram.ack = self.ack
datagram.ackbits = self.ackbits
datagram.payload = payload
buf = datagram.Serialize()
self.sock.send(buf)
self.seq = (self.seq + 1) % UDPDatagram.MAX_SEQ
self.ttl -= 1
if self.ttl <= 0:
logger.info('The connection is dead.')
return False
return True
