sampy/notes/packet_writeup.md

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2020-04-04 16:04:40 +02:00
# General packet
## Client to server spesific
* Encode (encrypt) data
* use first byte as checksum
* every byte ^ 0xAA added together
* xor
* Server port ^ 0xCCCC
* Every other byte
* Lookup table (use byte as indexing value)
## Shared
* Can be internal packet
# Internal packet
|condition|name|bit length|type|notes|
|---|---|---|---|---|
||messageNumber|0x10|ushort||
||reliability|0x04|uchar|Has to be over 5 (value > 5)|
|reliability in (7, 10, 9)|orderingChannel|0x05|||
|reliability in (7, 10, 9)|orderingIndex|0x10|ushort||
||isSplitPacket|0x01|bool|Drop packet as we no longer support split packet?|
|isSplitPacket == 0|dataBitLength|0x10|ushort||
|isSplitPacket == 0|data|dataBitLength|uchar*||