.Net WebSocket Prototype...Trouble Opening Connection in Javascript

Hi I have a Web Application and a Console Application in my C# .Net solution. I am trying to call a ReverseService class in my Console A开发者_JAVA百科pplication from my Web Application. In the Console Application in the static void Main function I am running the following code:

var host = new WebSocketsHost<ReverseService>(new Uri("ws://localhost:4502/reverse"));
host.AddWebSocketsEndpoint();
host.Open();
Console.ReadLine();

I am trying to call this WebSocketEndpoint from my Web Application with the following Javascript code in Chrome 12.

if (window.WebSocket) {
            //establishes websocket connection
            websocket = new WebSocket('ws://localhost:4502/reverse');

            websocket.onopen = function () {
                $('body').append('Connected.');

                $('#inputbox').keyup(function () {
                    websocket.send($('#inputbox').val());
                });
            };

            websocket.onclose = function () {
                $('body').append('Closed.');
            }

            websocket.onmessage = function (event) {
                $('#outputbox').val(event.data);
            };
        }

The websocket.onclose function does in fact get called, but the websocket.onopen function never does. I've googled and looked on here but to no avail, any help would be greatly appreciated.

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The error is almost certainly a mismatch between the protocol versions for your client and server. It looks like you are using the HTML5 labs prototype - if you are using the most recent version then your server is talking WebSockets hybi-09. Chrome implements a much older version of the protocol (I think its hixie-76 but I am not certain).

Your options are:

• Use a WebSocket server that implements hixie-76
• Use a different client implementation. For example, you could use the implementation that is provided with the HTML5 labs prototype. Its a Silverlight plugin with a JavaScript wrapper. You need to include a few scripts and use new WebSocketDraft instead of new WebSocket. You will also need to drop the clientaccesspolicy.xml file in your wwwroot - see the prototype readme file for more info. Have a look at some of the samples for more info.

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Use a TCP packet sniffer to watch the protocol handshake.

Successful tests with two protocols :

1. hybi-00/hixie-76 : Firefox 5.0, Safari 5.1.1 use this old protocol with Sec-WebSocket-Key1/Key2... There are several free server source codes in C#. For example search WebSocket76English.zip. It works even with Safari on iPhone.

2. hybi-06 : Firefox 7.0, Chrome 14 are using the last protocol with Sec-WebSocket-Key. The last .Net WebSocket prototype use that protocol.

If someone has a version of WebSocket prototype supporting the old protocol hybi-00, please let me know.

The last specification draft suggest that a server can support several protocols and tell about the supported versions in field Sec-WebSocket-Version.