$ python3 read_protocol.py bytes_inbound.bin
Dugo: 2, Nieznane-1: 1, Nieznane-2: 1, Dane: b'\x00'
Dugo: 36, Nieznane-1: 3146, Nieznane-2: 3, Dane: b"\x03bob\x1eI've just joined from user-box"
Dugo: 18, Nieznane-1: 1415, Nieznane-2: 3, Dane: b'\x03bob\x0cHow are you?'
