RPC ratelimiting

[juho]

Godot Version

4.4

Question

I am planing to build layer 7 ddos protection for my godot rpc server. Is it possible to ratelimit rpc functions? So i want to detect if user exceeds some call rate per function. If there is no build in way i ofcourse can create manually counter to each rpc function, but then how can i detect invalid rpc calls? Like packages that are calling function that does not exist or packages that don’t even follow the right protocol.

[mrcdk]

@juho

Is it possible to ratelimit rpc functions?

You may be able to add rate limit to rpc calls by extending MultiplayerAPIExtension and applying the rate limit in the MultiplayerAPIExtension._rpc() callback. There’s an example on how to extend it in the documentation.

@juho

how can i detect invalid rpc calls?

I’m not sure about this part.