def _decodePacket(self, packet):
# Look at the first byte to figure out whether it's IPv4 or IPv6.
version = (ord(packet[0]) & 0xf0) >> 4
if version == 4:
return IPv4Packet(packet)
elif version == 6:
return IPv6Packet(packet)
else:
return packet
def test_Recv(self):
srcport = 23456
payload = 'who\'s there?'
packet = IPv6Packet(proto = IPv6Packet.PROTO_UDP,
src = socket.inet_pton(self._codec.af, self._codec.addr.remote),
dst = socket.inet_pton(self._codec.af, TestMulticast6.MULTICAST_GROUP),
payload = UDPPacket(src = srcport,
dst = self._codec.UDPPort,
payload = payload))
self._codec.sendPacket(packet.encode())
self._codec.expectUDP(payload)
self.assertTrue(self._codec.runUDP())
def _sendNeighborAdvertisement(self, packet):
reply = EthernetFrame(
dst = packet.payload.payload.payload.src_lladdr,
src = TapPacketCodec.ETHER_ADDR_ANY,
type = EthernetFrame.TYPE_IPV6,
payload = IPv6Packet(
src = socket.inet_pton(self.addr.af, self.addr.remote),
dst = packet.payload.src,
proto = IPv6Packet.PROTO_ICMPV6,
payload = ICMPV6Packet(
type = ICMPV6Packet.TYPE_NEIGHBOR_ADVERTISMENT,
payload = ICMPV6NeighborAdvertisement(
solicited = 1,
override = 1,
target = socket.inet_pton(self.addr.af, self.addr.remote),
target_lladdr = TapPacketCodec.ETHER_ADDR_REMOTE))))
self._harness.char_dev.send(reply.encode())