/signalr/hubs 404 (Not Found) in DNN 7.3.4

Question

I am developing a website using DNN 7.3.4. I am signalr in this. I have executed this script for AUM_DoNotRewriteRegEx.

IF NOT EXISTS (SELECT * FROM dnn_hostsettings WHERE SettingName = 'AUM_DoNotRewriteRegEx' )

      insert into dnn_hostsettings
        (SettingName
        , SettingValue
        , SettingIsSecure 
        , CreatedByUserId
        , CreatedOnDate
        , LastModifiedByUserId
        , LastModifiedOnDate
        )
        values(
        'AUM_DoNotRewriteRegEx'
        ,'/DesktopModules/|/Providers|/LinkClick\.aspx|/SignalR'
        , 0
        , -1
        , GETDATE()
        , -1
        , GETDATE()
        )

    GO

    IF EXISTS (SELECT * FROM dnn_hostsettings WHERE SettingName = 'AUM_DoNotRewriteRegEx' and SettingValue not like '%/signalr%' )

    update dnn_hostsettings
        set settingValue = (select settingValue + '|/signalr' from dnn_hostsettings where settingname = 'AUM_DoNotRewriteRegEx')
    where settingname = 'AUM_DoNotRewriteRegEx'

    GO

And in my page

<script type="text/javascript" src='<%=ResolveClientUrl("~/signalr/hubs") %>'></script>

var objHub = $.connection.myHub;
$.connection.hub.start().done(function () {
    //....
})

But it's not working every time it's showing this.

score 2 · Answer 1 · answered Jul 03 '17 at 21:14

I think you are missing the OwinStartup class that starts the signalR hub in your application. Look at this project on my github called DnnLogAnalyzer. I have a class called Startup.cs that hooks into the OwinStartup and starts the signalR hub for the application.

using Microsoft.Owin;
using Owin;

[assembly: OwinStartup(typeof(DotNetNuclear.Modules.LogAnalyzer.Components.Startup))]

namespace DotNetNuclear.Modules.LogAnalyzer.Components
{
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            ...
            app.MapSignalR();
        } 
    }
}

If you are a DNNHero.com subscriber, you can also check out my step-by-step tutorial for tips on getting SignalR working in your DNN application.

I have already added startup class and in web config i have these keys for automatic owin startup ` ` — Manoj, Jul 04 '17 at 04:49

score 2 · Accepted Answer · answered Jul 05 '17 at 08:57

After huge R&D I found this

My owin startup class was not starting. I already have these keys in web config for automatically start owin

<add key="owin:AutomaticAppStartup" value="true" />
<add key="owin:appStartup" value="MyNamespace.MyStartupClass" />

But owin startup class was not starting after doing this.

Then I found Microsoft.Owin.Host.SystemWeb is responsible for starting owin startup class. And I missed to add this dll in my project. After adding Microsoft.Owin.Host.SystemWeb owin started and register hub routes successfully.

For me, the problem was this and after copying that dll the problem fade away. — M.R.Safari, Feb 09 '18 at 16:24

/signalr/hubs 404 (Not Found) in DNN 7.3.4

2 Answers2