HTTP relays

There is code for using relays over HTTP at https://github.com/syncthing/syncthing-lite/blob/master/syncthing-http-relay-client/src/main/kotlin/net/syncthing/java/httprelay/HttpRelayConnection.kt but I could not find the documentation of this HTTP relay protocol and I couldn’t find any code related to it at the relay server code.

The only thing I’ve found is https://forum.syncthing.net/t/proposal-relay-protocol-over-https/8643/5, but this is only the idea and not how it is implemented.

Does this http relaying still exist?

Relaying over HTTP has never existed.

But, I mean, it could. @davide.Imbriaco probably did implement it, as seen as above. But it’s not in Syncthing.