How to launch server with protocol v4?

[t0msk]

I am solving this issue: getnamo/SocketIOClient-Unreal#425 that client for Unreal Engine supports only protocol v4 of SocketIO, and I cannot connect, so I think socketioxide uses v5 by default, so I would like to ask you how can I switch to v4 protocol my cargo.toml looks like:
socketioxide = { version = "0.12", features = ["v4"] }
but when I install packages, build it and run it, I still cannot connect to the server, so I wonder if my server is actually running v4 protocol or if there is some debug log that I can read what is happening.

[Totodore]

Hey ! Do you have any log from client or server side ? You can enable socketioxide logs with the tracing feature and add a tracing subscriber.
Check here for and example:
https://github.com/Totodore/socketioxide/blob/main/e2e/engineioxide/engineioxide.rs#L45-L49

[t0msk]

changed and even after that, failed to connect:

[Totodore]

Namespaces are different than URLs.
You should change it in your code and keep the /socket.io URL in the client

[t0msk]

Did you manage to run it? Because even after that no connection:

[Totodore]

Open the dev console, enable socket.io logging: https://socket.io/fr/docs/v4/logging-and-debugging/#available-debugging-scopes. And check the logs in the client side of hoppscotch. You should have the cause of your problem

[t0msk]

Still no success :(