Universal Packet Format
General Packet Format
Ping Protocol comprises a binary packet format. All packets have the same structure which is defined in the table below.
| Byte index | Data Type | Name | Description |
|---|---|---|---|
0 | u8 | B | hex value 0x66 |
1 | u8 | R | hex value 0x82 |
2-3 | u16 | payload_length | number of bytes in the payload |
4-5 | u16 | packet_id | unique id for each packet type |
6 | u8 | reserved | set to 0 |
7 | u8 | reserved | set to 0 |
8 to n | u8[] | payload | payload specific to each packet_id |
(n+1) to (n+2) | u16 | checksum | sum of all the bytes in the packet from 0 to n, truncated to 16 bits |
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