Check out Gnet... If your talking about a Quake3 like display server then I haven't seen that done in blitz yet as it would require a dedicated server to handle nothing but server monitoring and if the developer isn't doing it for commerical reasons then it's probably to costly.
But basically, you would setup an echo server that handles game servers loging in and out.. After thats finished you would allow clients to login and capture a list of live servers. It's a fairly simple approach. Basically servers stay connected to your central hub server, once they disconnect they are removed from the master list and all other clients connected would see the server removed from the listing etc.. etc..
Think of it as a chat room server but the user names are actually server names and Ip's ...
But basically, you would setup an echo server that handles game servers loging in and out.. After thats finished you would allow clients to login and capture a list of live servers. It's a fairly simple approach. Basically servers stay connected to your central hub server, once they disconnect they are removed from the master list and all other clients connected would see the server removed from the listing etc.. etc..
Think of it as a chat room server but the user names are actually server names and Ip's ...