netcodedocs/ptype-psub-defs.md

# PType and PSub Definitions

A BO3 GameServer packet has a 2 byte header.
Byte 1 is PType (packet type), which is used to check whether its serverbound or clientbound, however nonstandard BO3 servers can have the PType above 0x01
Byte 2 is PSub (packet subtype), which is the actual packet name. Each ptype can have 256 different subtypes 

## PType
0x00 = Clientbound (should never be sent by a client)
0x01 = Serverbound (should never be recieved by a client)

## PSub for client

0x02 = Replication channel
0x01 = Echo (Server will return what you send)
0x04 = Recv auth validness
0xFF = kick

## PSub for server
0x03 = Recv auth session
0x02 = Same as client
init commit 2025-10-12 18:03:20 +02:00			`# PType and PSub Definitions`

			`A BO3 GameServer packet has a 2 byte header.`
			`Byte 1 is PType (packet type), which is used to check whether its serverbound or clientbound, however nonstandard BO3 servers can have the PType above 0x01`
			`Byte 2 is PSub (packet subtype), which is the actual packet name. Each ptype can have 256 different subtypes`

			`## PType`
			`0x00 = Clientbound (should never be sent by a client)`
			`0x01 = Serverbound (should never be recieved by a client)`

Add launchable 2025-10-23 20:58:19 +02:00			`## PSub for client`
init commit 2025-10-12 18:03:20 +02:00
			`0x02 = Replication channel`
Add launchable 2025-10-23 20:58:19 +02:00			`0x01 = Echo (Server will return what you send)`
			`0x04 = Recv auth validness`
			`0xFF = kick`

			`## PSub for server`
			`0x03 = Recv auth session`
			`0x02 = Same as client`