It can be used with Blueprint and C++, the interface is very easy. It is especially useful for platforms that does not support Steam such as mobile. It does not use any online subsystem and works on Windows, Linux, and mobile platforms.
It is composed of two parts:
An external Master Server program written in C for Windows 10 and Linux(external download link), it handles all request from clients and game servers. It automatically removes game servers that are no longer reachable.
Unreal Engine 4 Plugin that allows communication with the Master Server :
Your Unreal Engine multiplayer server can register to the Master Server and send its data such as server name, player count, map name. It can updates those datas at anytime.
Your Unreal Engine client can get a list of all registered game server available.
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