Multiplayer Master Server (listing)
When creating a dedicated server, this option auto-registers that server with the Master MP List server via a REST API call upon server startup.
The Master MP server verifies that the server invoking its 'RegisterMe' method is indeed a valid VS server after a minute - with a direct stateless 'ServerBriefInfo' call (on the dedicated server).
Reoccurring every ## time units the M.MP will re-poll all known servers - to collect metadata, player count, ping, version info / mods, region, public/private, ect...
The client UI then requests the M.MP for its Master Listing, filterable by version, region, uptime, activity, ect... and will update individual entries with the 'ServerBriefInfo' call when detailed info is requested.
On shutdown of a Dedicated server - it Invokes the 'UnregisterMe' method, no sense to leave defunct servers in the list to be cleared out.
Sine NOBODY wants to dig through forums for server names / IPs.