def receive(self):
message, addr = self._sender_socket.recvfrom(self._buffer_size)
packetHeader = STPHeader(extractHeader(message))
self.writeToLog("rcv",
getTime() - self._startTime, packetHeader.getType(),
packetHeader.seqNum(), len(extractContent(message)),
packetHeader.ackNum())
return message, addr
def transmitACKPacket(self, ack_number, isSyn, clientAddress):
ackHeader = STPHeader(Receiver.current_ack_num, ack_number, 1, isSyn,
0, 0, False)
ackPacket = STPPacket(ackHeader, "")
self._receiver_socket.sendto(str(ackPacket).encode(), clientAddress)
self.writeToLog("snd",
getTime() - self._startTime, ackHeader.getType(),
ackHeader.seqNum(), 0, ackHeader.ackNum())
Receiver.current_ack_num += 1