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This wiki contains research on Ubisoft's Game Service SDK, its protocols and architecture, aiming to enable online service emulation for legacy titles.

Services

Service	Protocol(s)	Description
GSConnect	HTTP	Online service configuration
GSNAT	SRP	Connectivity over NAT
IRC	unknown (TCP)	In-game chat
Router	unknown (TCP)	Game data
GSCDKey	CDKM (UDP)	Auth and key validation
Proxy	unknown

Network protocols

Protocol	Description
SRP	Low-level protocol implementing reliability-like features on top of UDP