def _send_packet(self, data, message_number, reliability, ordering_index, split_packet_id, split_packet_index, split_packet_count): out = BitStream() out.write(c_bit(len(self._acks) != 0)) if self._acks: out.write(c_uint(self._remote_system_time)) out.write(self._acks.serialize()) self._acks.clear() assert len(out) + ReliabilityLayer.packet_header_length(reliability, split_packet_id is not None) + len(data) < 1492 has_remote_system_time = False # time is only used for us to get back to calculate ping, and we don't do that out.write(c_bit(has_remote_system_time)) #out.write(c_uint(remote_system_time)) out.write(c_uint(message_number)) out.write_bits(reliability, 3) if reliability in (PacketReliability.UnreliableSequenced, PacketReliability.ReliableOrdered): out.write_bits(0, 5) # ordering_channel, no one ever uses anything else than 0 out.write(c_uint(ordering_index)) is_split_packet = split_packet_id is not None out.write(c_bit(is_split_packet)) if is_split_packet: out.write(c_ushort(split_packet_id)) out.write(c_uint(split_packet_index), compressed=True) out.write(c_uint(split_packet_count), compressed=True) out.write(c_ushort(len(data) * 8), compressed=True) out.align_write() out.write(data) assert len(out) < 1492 # maximum packet size handled by raknet self._transport.sendto(out, self._address)
def serialize(self, stream: bitstream.WriteStream) -> None:
key_num = len(self._keys)
stream.write(bitstream.c_uint(key_num))
for key in self._keys:
name = key[0]
value = key[1]
value_type = key[2]
stream.write(bitstream.c_uint8(len(name) * 2))
for char in name:
stream.write(char.encode('latin1'))
stream.write(b'\0')
stream.write(bitstream.c_ubyte(value_type))
if value_type == 0:
stream.write(value, length_type=bitstream.c_uint)
elif value_type == 1:
stream.write(bitstream.c_int(value))
elif value_type == 3:
stream.write(bitstream.c_float(value))
elif value_type == 5:
stream.write(bitstream.c_uint(value))
elif value_type == 7:
stream.write(bitstream.c_bool(value))
elif value_type == 8 or value_type == 9:
stream.write(bitstream.c_int64(value))
elif value_type == 13:
xml_str = bytes(ElementTree.tostring(value))
xml_str = b'<?xml version="1.0">' + xml_str
stream.write(bitstream.c_ulong(xml_str.__len__()))
stream.write(xml_str)
def serialize(self):
"""
Serialize the RangeList. This is meant to be compatible with RakNet's serialization.
(This currently serializes items as uints, since currently the only occurence where I need to serialize a rangelist is with an uint)
"""
out = BitStream()
out.write(c_ushort(len(self)), compressed=True)
for range in self:
out.write(c_bit(range[0] == range[1]))
out.write(c_uint(range[0]))
if range[0] != range[1]:
out.write(c_uint(range[1]))
return out
def _send_loop(self):
for packet in self._sends:
data, reliability, ordering_index, split_packet_id, split_packet_index, split_packet_count = packet
message_number = self._send_message_number_index
self._send_message_number_index += 1
self._send_packet(data, message_number, reliability, ordering_index, split_packet_id, split_packet_index, split_packet_count)
if reliability == PacketReliability.Reliable or reliability == PacketReliability.ReliableOrdered:
self._resends[message_number] = time.time()+1, packet
self._sends.clear()
for message_number, resend_data in self._resends.items():
resend_time, packet = resend_data
if resend_time > time.time():
continue
log.info("actually resending %i", message_number)
data, reliability, ordering_index, split_packet_id, split_packet_index, split_packet_count = packet
self._send_packet(data, message_number, reliability, ordering_index, split_packet_id, split_packet_index, split_packet_count)
if reliability == PacketReliability.Reliable or reliability == PacketReliability.ReliableOrdered:
self._resends[message_number] = time.time()+1, packet
if self._acks:
out = BitStream()
out.write(c_bit(True))
out.write(c_uint(self._remote_system_time))
out.write(self._acks.serialize())
self._acks.clear()
self._transport.sendto(out, self._address)
if not self.stop:
asyncio.get_event_loop().call_later(0.03, self._send_loop)
def on_internal_ping(self, data, address):
ping_send_time = data[:4]
pong = BitStream()
pong.write(c_ubyte(Message.ConnectedPong))
pong.write(ping_send_time)
pong.write(c_uint(int(time.perf_counter() * 1000)))
self.send(pong, address, PacketReliability.Unreliable)