def start(self):
#TODO:if the file size is less than N packets, need to be handled
# add the first N packets
for i in range(self.N):
p = self.get_packet()
self.window.append(p)
self.win_tail = self.win_tail + 1
if self.eof:
break
#Send the packets in the window
self.send_window()
thread.start_new_thread(self.alram_trigerrer, ())
while len(self.window) > 0:
# receive data from client
data, addr = self.sock.recvfrom(4096)
#create ACK packet from the received data
p = Packet.build_packet(data, is_ack=True)
if (p.seq_num > self.win_head):
new_pkts = self.update_window(p.seq_num - self.win_head)
self.win_tail = self.win_tail + new_pkts
self.win_head = p.seq_num
self.logger.info("Rcvd ACK %d. Moving forward to %d" %
(p.seq_num, self.win_tail))
else:
self.logger.info("Wrong ACK %d rcvd" % (p.seq_num))
pass
