def send(self, internet_proto, dest_ip, data) :
header = PacketBuilder.build(self._header_struct,
source_mac = self._interface.get_mac(),
destination_mac = self._ip_to_mac(dest_ip),
internet_proto = IPv4)
trailer = PacketBuilder.build(self._trailer_struct,
crc32 = 0)
full_frame = header + data + trailer
self._interface.send(full_frame)
def recv(self, data) :
header = PacketBuilder.parse(data[0:self._header_struct.sizeof()])
data = data[self._header_struct.sizeof():]
data = data[:-self._trailer_struct.sizeof()]
internet_layer = NetworkLayer.from_int(header.internet_proto)
internet_layer.recv(self._mac_to_ip(header.source_mac), data)