# 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
* If packet is smaller then 3 bytes; forward to plugin handlers (*)before handling them (len(data) <= 2)

## Order of operations
1. Check if banned (if true, cancel rest and handle) [^1]
2. If first byte in data is (0x19, 0x1d, 0x1f, 0x24 or 0x18) custom code flow required [^2]
3. HandleSocketReceiveFromConnectedPlayer (cancel rest if handled)
4. Check if cheat (modified) packet (unexpected at this time, there are some packets we can expect) [^3]

[^1]: this could be changed in custom implementation (dont allow inital connection instead)
[^2]: if (0x18 and length == 2) or (0x19 and length <= 2):  
  handle packet and return  
elif (0x1d or 0x1f or 0x24) and length <= 2:  
  handle packet, but continue  
[^3]: if ((0x18 or 0x1a) and length <= 3) or ((0x19 or 0x1d) and length <= 2) or
    ((0x08 or 0x07 or 0x27) and length >= 5) or (0x37 and length < 400):  
  We expect this packet, everything is ok?  
else:  
  This is a cheat (modified / injected) packet that should not arrive at this time
  Send a packet to client that you received a modified packet (0x26)

# 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*||