DoIP payload
Payload Type
Payload length
Source Address (2 bytes)
0x8001
n+4
Diagnostic message positive acknowledgement
0x8002
n+5
Target Address (2 bytes)
UDS Data (n bytes)
Diagnostic message
Source Address (2 bytes)
Target Address (2 bytes)
Previous Diagnostic message data optional/debug - (n bytes)
ACK code (1 byte)
Diagnostic message negative acknowledgement
0x8003
n+5
Source Address (2 bytes)
Target Address (2 bytes)
Previous Diagnostic message data optional/debug - (n bytes)
NACK code (1 byte)
only sent by vehicle DoIP node