Native C# Client for Web Sockets

Hi all!

I need to connect via WebSockets to an on-prem Solace Broker from my native app (UWP written in C#).

I also need to add I the Connect() HTTP request a specific HTTP Header "Authorization" with a Bearer token that I generate in the app.

I cannot see a way to configure the Solace C# SDK to perform such a custom activity, so first of all, do you know any way to do this with the Solace SDK?

Alternatively, I could write a simple native WebSocket without using the Solace SDK, but I need the parameters to connect.

E.g. I tried using a very simple approach (using a NuGet package https://github.com/PingmanTools/websocket-sharp/) like this:

using WebSocketSharp;
WebSocket ws = new WebSocket("wss://mr-bqdpohy3bis.messaging.solace.cloud:443");  
ws.SetCredentials("solace-cloud-client", "<myPsw>", true); 
ws.Connect();

but it doesn't work...

What am I missing?

Thanks!!

cghersi