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Tkkrlab Ethernet Interface Protocol

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TEIP Client->Server header
Offsets Octet 0 1 2 3
Octet Bit 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
0 0 Destination Address
4 32 Destination Port D
I
S		 C
O
N		 T
C
P		 .
.
.		 .
.
.		 .
.
.		 .
.
.		 .
.
.		 Connection ID
8
... 		64
... 		Payload
  • Destination Address (32 bits) – IPv4 address of receiver
  • Destination Port (16 bits) – Destination Port
  • DIS (1 bit) - If true, send payload then disconnect.
  • CON (1 bit) - Connect. If Connection ID is supplied, try that ID. If connection ID is already in use, return ID in use.
  • TCP (1 bit) - If true, use TCP to connect. If false, use UDP. Matters only when CON bit is high.
  • ... (5 bits) - Reserved.
  • Connection ID (16 bits) - What connection to use.
  • Payload (Max. 65536 bits) - The Data.


TEIP Server->Client header
Offsets Octet 0 1 2 3
Octet Bit 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
0 0 Source Address
4 32 Source Port Pack
Type		 T
C
P		 .
.
.		 .
.
.		 .
.
.		 Connection ID
8
... 		64
... 		Payload
  • Source Address (32 bits) – IPv4 address of source
  • Source Port (32 bits) - Source Port
  • Pack Type (4 bits) - Packet type:
    • 0x0 - Ethernet Response
    • 0x1 - Connection Established(Payload contains
    • 0x2 - AddressInUseError(Connection ID contains alternative address used)
    • 0x3 - AddressDoesNotExistError
    • 0x4 - TimeoutError(Connection timed out)
    • 0x5 - ConnectionRefusedError(Host refused connection)
    • 0xF - UndefinedError(We don't know what the shit happened here, payload might contain debug info.)