I am attempting to implement WebSockets in a DNN Module.

To see how WebSockets work I built a MVC application which works just fine.

MVC Application
By using an addin to Chrome, I can see that a socket is successfully opened:
ws://localhost:12782/api/Websocket

I then converted to IIS, rather than localhost, and after installing the WebSocket protocol in IIS this also works:
ws://websockettest/api/Websocket

Because I successfully opened the socket in the MVC application I thought replacing the host name + module name would work:

ws://gg-dev/api/dwsWebSocketTest/Websocket

Unfortunately not. I get an error:

'ws://gg-dev2/api/dwsWebSocketTest/Websocket' failed: Error during WebSocket handshake: Unexpected response code: 404

http://gg-dev2/API/dwsWeb...tTest/WebSocket/test

responds from:
[HttpGet]
[ActionName("test")]
[AllowAnonymous]
public HttpResponseMessage HelloWorld()
{
return Request.CreateResponse(HttpStatusCode.OK, "Hello from WebSocketController!");
}
and I can trap this in the debugger. This suggess my url is correct.

Testing the socket does not get to my code. I have tried with & without the decoration:
//[HttpGet]
//////[ValidateAntiForgeryToken]
//[ActionName("get")]
//[AllowAnonymous]
//[DnnModuleAuthorize(AccessLevel = SecurityAccessLevel.Anonymous)]
public HttpResponseMessage Get()
{
if (HttpContext.Current.IsWebSocketRequest)
{
var commentHandler = new CommentSocketHandler();
HttpContext.Current.AcceptWebSocketRequest(commentHandler);
}

return new HttpResponseMessage(HttpStatusCode.SwitchingProtocols);
}

Do I need to do something in DNN to get this to work, or am I missing something obvious?

All suggestions welcomed!