Packet types

Depending on the first byte of a packet, the packet has different attributes.

First byte	Length of the packet	Encrypted Server -> Client	Encrypted Client -> Server
0xC1	Specified by the second byte	No	Yes (XOR32)
0xC2	Specified by the second and third byte	No	Yes (XOR32)
0xC3	Specified by the second byte	Yes (Simple modulus)	Yes (Simple modulus + XOR32)
0xC4	Specified by the second and third byte	Yes (Simple modulus)	Yes (Simple modulus + XOR32)