def handleDatagram(self, buffer):
dataPacket = DataPacket()
dataPacket.buffer = buffer
dataPacket.decode()
if dataPacket.sequenceNumber < self.windowStart:
return
elif dataPacket.sequenceNumber > self.windowEnd:
return
elif dataPacket.sequenceNumber < len(self.receivedWindow):
return
diff = dataPacket.sequenceNumber - self.lastSequenceNumber
if dataPacket.sequenceNumber < len(self.nackQueue):
del self.nackQueue[dataPacket.sequenceNumber]
self.ackQueue.append(dataPacket.sequenceNumber)
self.receivedWindow.append(dataPacket.sequenceNumber)
if diff != 1:
i = self.lastSequenceNumber + 1
while i < dataPacket.sequenceNumber:
if i not in self.receivedWindow:
self.nackQueue.append(i)
i += 1
if diff >= 1:
lastSequenceNumber = dataPacket.sequenceNumber
self.windowStart += diff
self.windowEnd += diff
for packet in dataPacket.packets:
self.receivePacket(EncapsulatedPacket.fromBinary(packet))
def decodePayload(self):
self.sequenceNumber = self.getLTriad()
while not self.feof():
self.packets.append(EncapsulatedPacket.fromBinary(self))
def close(self):
self.addEncapsulatedToQueue(
EncapsulatedPacket.fromBinary(BinaryStream(b"\x00\x00\x08\x15")),
self.priority["Immediate"])
def close(self):
self.addEncapsulatedToQueue(EncapsulatedPacket.fromBinary('\x00\x00\x08\x15'), self.priority["Immediate"])