def test_RecvMTUSize(self):
# Send a payload that's just within the MTU limit.
payload = '\xff' * (self._codec._harness.interface.mtu -
IPv4Packet().headerLen - UDPPacket().headerLen)
srcport = 23456
packet = IPv4Packet(proto = IPv4Packet.PROTO_UDP,
src = socket.inet_pton(self._codec.af, self._codec.addr.remote),
dst = socket.inet_pton(self._codec.af, self._codec.addr.local),
payload = UDPPacket(src = srcport,
dst = self._codec.UDPPort,
payload = payload))
assert len(packet.encode()) == self._codec._harness.interface.mtu
self._codec.sendPacket(packet.encode())
self._codec.expectUDP(payload)
self.assertTrue(self._codec.runUDP())
def test_Recv(self):
srcport = 23456
payload = 'who\'s there?'
packet = IPv4Packet(proto = IPv4Packet.PROTO_UDP,
src = socket.inet_pton(self._codec.af, self._codec.addr.remote),
dst = socket.inet_pton(self._codec.af, self._codec.addr.local),
payload = UDPPacket(src = srcport,
dst = self._codec.UDPPort,
payload = payload))
self._codec.sendPacket(packet.encode())
self._codec.expectUDP(payload)
self.assertTrue(self._codec.runUDP())