I know this is a super old post. But for those of you looking for the hook to importing your own custom session name support in OnlineSubsystemSteam is to use -SteamServerName=YourSessionName on the command line when starting your server.
I know this is a super old post. But for those of you looking for the hook to importing your own custom session name support in OnlineSubsystemSteam is to use -SteamServerName=YourSessionName on the command line when starting your server.