Message 0x4B

Timestamp

Type	Description	Offset
uint32_t	type	0
uint32_t	timestamp	4
uint32_t	empty	8

Client sends this packet every 10 seconds. Server never reads the timestamp: instead, it will:

- check if it considers the client 'logged in'
- check if the size of packet - 4 equals 8

If any of the conditions above are false, it will disconnect the client.