CODEWITHSUNDEEP
asp.netsignalr
Eric Sassaman
Eric Sassaman

Reputation: 1471

SignalR not generating hub class

I've got some kind of basic config issue trying to get my first SignalR app working. It's generating a proxy, but there's no hub in it, and I can't even call createHubProxy(), that function doesn't exist in my proxy for some reason.

I'm calling RouteTable.Routes.MapHubs() in Application_start, I tried setting in web.config as well. What am I doing wrong?

This is a plain 'ol Web Forms app. My aspx code:

<%@ Page Language="C#" CodeFile="blogroll3.aspx.cs" Inherits="blogroll3" %>

<!DOCTYPE html>
<html>
<head id="Head1" runat="server">
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.10.2.min.js"></script>
    <script src="/scripts/jquery.signalR-1.1.3.js"></script>
    <script src='<%: ResolveClientUrl("~/signalr/hubs") %>'></script>
<script src="blogroll3.js"></script>
</head>
<body>
</body>
</html>

codebehind:

using System;
using System.Web.UI;
using Microsoft.AspNet.SignalR;
using Microsoft.AspNet.SignalR.Hubs;

public partial class blogroll3 : Page
{
    public class ProgressHub : Hub
    {
        public void setProgress()
        {
        }
    }
}

my client js code:

//this is not working, progressHub is undefined:
//var proghub = $.connection.progressHub;

//this code fails on createHubProxy(), it doesn't exist.
var connection = $.hubConnection();
var proghub = $.connection.createHubProxy('progressHub');

Here's the proxy it's generating:

/*!
 * ASP.NET SignalR JavaScript Library v1.1.3
 * http://signalr.net/
 *
 * Copyright Microsoft Open Technologies, Inc. All rights reserved.
 * Licensed under the Apache 2.0
 * https://github.com/SignalR/SignalR/blob/master/LICENSE.md
 *
 */

/// <reference path="..\..\SignalR.Client.JS\Scripts\jquery-1.6.4.js" />
/// <reference path="jquery.signalR.js" />
(function ($, window) {
    /// <param name="$" type="jQuery" />
    "use strict";

    if (typeof ($.signalR) !== "function") {
        throw new Error("SignalR: SignalR is not loaded. Please ensure jquery.signalR-x.js is referenced before ~/signalr/hubs.");
    }

    var signalR = $.signalR;

    function makeProxyCallback(hub, callback) {
        return function () {
            // Call the client hub method
            callback.apply(hub, $.makeArray(arguments));
        };
    }

    function registerHubProxies(instance, shouldSubscribe) {
        var key, hub, memberKey, memberValue, subscriptionMethod;

        for (key in instance) {
            if (instance.hasOwnProperty(key)) {
                hub = instance[key];

                if (!(hub.hubName)) {
                    // Not a client hub
                    continue;
                }

                if (shouldSubscribe) {
                    // We want to subscribe to the hub events
                    subscriptionMethod = hub.on;
                }
                else {
                    // We want to unsubscribe from the hub events
                    subscriptionMethod = hub.off;
                }

                // Loop through all members on the hub and find client hub functions to subscribe/unsubscribe
                for (memberKey in hub.client) {
                    if (hub.client.hasOwnProperty(memberKey)) {
                        memberValue = hub.client[memberKey];

                        if (!$.isFunction(memberValue)) {
                            // Not a client hub function
                            continue;
                        }

                        subscriptionMethod.call(hub, memberKey, makeProxyCallback(hub, memberValue));
                    }
                }
            }
        }
    }

    $.hubConnection.prototype.createHubProxies = function () {
        var proxies = {};
        this.starting(function () {
            // Register the hub proxies as subscribed
            // (instance, shouldSubscribe)
            registerHubProxies(proxies, true);

            this._registerSubscribedHubs();
        }).disconnected(function () {
            // Unsubscribe all hub proxies when we "disconnect".  This is to ensure that we do not re-add functional call backs.
            // (instance, shouldSubscribe)
            registerHubProxies(proxies, false);
        });



        return proxies;
    };

    signalR.hub = $.hubConnection("/signalr", { useDefaultPath: false });
    $.extend(signalR, signalR.hub.createHubProxies());

}(window.jQuery, window));

Upvotes: 2

Views: 10140

Answers (4)

Hasan Tuna Oru&#231;
Hasan Tuna Oru&#231;

Reputation: 1896

Use uppercase letters for signalR R.

For example:

<script src="@Href("~/Scripts/jquery.signalR.js")" type="text/javascript"></script>

Instead of:

<script src="@Href("~/Scripts/jquery.signalr.js")" type="text/javascript"></script>

Upvotes: 0

Michael Kangas
Michael Kangas

Reputation: 1

all i ended up doing was pulling up that dynamic script in the browser

http://my app base url/signalr/hubs

then when the source came up i went through these steps

  1. CTRL+A
  2. CTRL+C
  3. create file hubs.js
  4. CTRL+V
  5. substitute /signalr/hubs with /hubs.js

might be barbaric and overly simple. but, it's working for me

Upvotes: 0

Eric Sassaman
Eric Sassaman

Reputation: 1471

The problems was that my Hub class was nested in my Page class. Moving it out solved the problem. See comments to my original question.

Upvotes: 0

gideonlouw
gideonlouw

Reputation: 427

1) Make sure the section: @Scripts.Render("~/bundles/jquery") gets called before the latest signalr js file: jquery.signalR-2.0.2.min.js

2) If you use a layout page move the @Scripts.Render("~/bundles/jquery") to the header section.

3) Also make sure you are referencing the latest version of signal-r - at the time of writing: jquery.signalR-2.0.2.min.js

Upvotes: 2

Related Questions