Handshake fails for the WebSocket while utilizing the TransparentEndPoint

[ardroh]

Hi,

In my app, I have difficulties with establishing WebSocket handshake while utilizing TransparentEndPoint. The connection fails each time.
I have made a closer Wireshark analysis:

• The browser request is properly forwarded to the webserver by the Proxy,
• The web server response (HTTP/1.1 101) is transferred to the Proxy but it is not forwarded to the Browser.

While debugging own code and the Titanium-Web-Proxy library I have traced the issue to this line inside of the src/Titanium.Web.Proxy/WebSocketHandler.cs:

if (!args.IsTransparent)
{
    await clientStream.WriteResponseAsync(response, cancellationToken);
}

after removing the if the web socket connection seems to be established correctly by the embedded Chromium.

Could you please tell me what is the purpose of that check and could this be removed from the library code?

ver. 3.1.1301

[honfika]

Good question, it seems to be a bug, since thw response should be sent in transparent mode, too.
I remove that.

Transparent mode is not really tested.. at least by me:(

By the way, do you use .net core/.net 5 or the old .net 4.x famework?

[ardroh]

Thanks for the quick feedback!
I'm sticking with the older .net framework for now (4.7.2 to be exact).

[honfika]

I created a beta nuget package, so you can sue that.
I close this issue, feel free to reopen if needed.