Socket.IO mTLS connection with client certificate

[viniciusbenite]

Hi, hope this message fins you well.

We have a project in Unity, using Socket.Quobject for .NET and we are having problems to connect to the socket with mTLS activated:

Socket.Quobject.EngineIoClientDotNet.Client.EngineIOException: websocket error ---> System.Exception: unknown server protocol version

We suspected that its the lack of the client certificate that is causing the problem.

Is there an option to send the client certificate, like in Node.js? If not so, how to handle this issue?

Thanks in advance!