Buffer underflow, fix ipv6 favourism and example update

[brostosjoined]

No description provided.

[brostosjoined]

The script somehow favours ipv6 port even when the protocol is set to ipv4 so ports must be same

[brostosjoined]

20:17:18 [PieRakNet - INFO] - Server initialized.
20:17:18 [PieRakNet - INFO] - Server started on 0.0.0.0:19132! (IPv4)
Traceback (most recent call last):
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\EXAMPLE.py", line 43, in <module>
    server.main()
    ~~~~~~~~~~~^^
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\EXAMPLE.py", line 36, in main
    raise(e)
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\EXAMPLE.py", line 30, in main
    self.server.start()
    ~~~~~~~~~~~~~~~~~^^
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\pieraknet\server.py", line 132, in start
    self.handle_data(data, client)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\pieraknet\server.py", line 147, in handle_data
    connection.handle(data)
    ~~~~~~~~~~~~~~~~~^^^^^^
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\pieraknet\connection.py", line 49, in handle
    handler(data, self.server, self)
    ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\pieraknet\handlers\frame_set.py", line 10, in handle
    frame_set_packet.decode(data)
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\pieraknet\packets\frame_set.py", line 23, in decode
    frame = self.decode_frame(buffer)
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\pieraknet\packets\frame_set.py", line 44, in decode_frame
    frame['reliable_frame_index'] = buffer.read_uint24le()
                                    ~~~~~~~~~~~~~~~~~~~~^^
  File "c:\Users\Brostos\Desktop\inventory\Games\PieRakNet-main\pieraknet\buffer.py", line 169, in read_uint24le
    return struct.unpack("<I", uint24le)[0]
           ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
struct.error: unpack requires a buffer of 4 bytes