online game service

Question

Hi
in webserver we have restfulapi for http requests.
But in game server that used tcp and udp what kind of concept of connection used ?
i heared about interfaces and socket.
In unreal engine we active an online subsystem plugin
to communicative between client and online services such as steam.
how can i write my own online service.
What kind of server i need?
my target isn't dedicative game server
Actually is online game service that support some interfaces such as friends and session .
sorry for bad english

Answer 1

You need a web server, a script and lots of time to learn concepts