Hello,

It seems this auth requires to pass the token when opening the http request to get a new session, so you should use the event OnHTTPRequest of the Socket.io API, find below how to pass a bearer token example, just replace "your-token" by the correct value

procedure OnHTTPRequest(Sender: TObject; aRequest: TsgcWSSocketIOHTTPRequest);

begin

  aRequest.Headers.Add('Authorization: Token your-token');

end;

If doesn't work, and you can provide the server where you must connect please provide more details and I'll check in my machine.

Kind Regards,
Sergio

Hi. It's not a part of the headers. It's sent during the CONNECT in the protocol. See the example here under 'with an additional payload':
https://socket.io/docs/v4/socket-io-protocol/#connection-to-a-namespace

It is possibly also a part of the handshake outside of the header. See info here:
https://socket.io/docs/v4/server-socket-instance/#sockethandshake

Similar to the HandShakeTimestamp you've already implemented.

Hello,

The Socket handshake is just an HTTP GET request with some parameters. According the url:

https://socket.io/docs/v4/server-socket-instance/#sockethandshake

The Auth is passed as a payload, but a HTTP GET request hasn't a payload, it's not a POST, so I assume they are referring to pass an Authorization header like in the example I've sent previously. Did you tested it? it doesn't work?

Kind Regards,
Sergio