Question

How can i create/convert this script into model in Backbone that can use SignaR Hubs? For example:

<script type="text/javascript">
    $(function () {
        // Proxy created on the fly
        var chat = $.connection.chat;

        // Declare a function on the chat hub so the server can invoke it
        chat.addMessage = function (message) {
            alert("message");
        };

        // Start the connection
        $.connection.hub.start();
    });
</script>

---

EDIT

I did come up with this:

    window.Message = Backbone.Model.extend({
    hub: undefined,
    initialize: function () {
        this.hub = $.connection.message;
    },
    addMessage: function (message) {
        alert(message);
    },
    connect: function () {
        $.connection.hub.start();
        var messages = this.hub.getAll();//get messages
    }
});

but this is not working due to the following error:

this error: :55885 Unexpected response code: 200

Answer 1

If you use default settings SignalR will first try to send a websockets poll to the server. The :55885 is simply the port number of your server. Websockets protocol expects a response status code of 101 (see http://dev.w3.org/html5/websockets/).

If running IIS, unless you run Windows 8 with ASP.NET 4.5 your webserver, it will not recognize a web sockets request and (begin speculation) treat it as a normal get request and return status code 200 (OK) (end speculation) which is an unexpected response in the eyes of the websockets initiator. When this happens SignalR falls back to longpolling instead.

This might not answer your question but it will help you understand the error you get (which is likely not the reason why your code doesn’t work)