def run(self):
while not self._stopping:
# Read IPv4 header
self._logger.debug("Waiting for IP header")
hdr = self._read_chunk(ipv4_header.FIXED_LENGTH)
if hdr == None: break
hdr_parsed = ipv4_header(hdr)
self._logger.debug("Pulled IP header:\n%s", hdr_parsed.dump())
# Read payload
payload = self._read_chunk(hdr_parsed.get_total_length() - ipv4_header.FIXED_LENGTH)
if payload == None: break
self._logger.debug("Finished reading payload of size %d", len(payload))
# Re-combine packet and send to the MAC
self._mac.send(hdr_parsed.get_dest_address(), hdr + payload)
def run(self):
while not self._stopping:
# Read next packet from the MAC
self._logger.debug("Waiting for packet")
pkt = self._mac.recv()
if not pkt: break
if len(pkt) < ipv4_header.FIXED_LENGTH:
self._logger.error("Ignoring short packet of size %d", len(pkt))
# Print IP header for debugging
self._logger.debug("Pushing IP packet:\n%s", ipv4_header(pkt).dump())
# Write data
while len(pkt) > 0:
bytes_written = os.write(self._fd, pkt)
pkt = pkt[bytes_written:]
