Signalr using MVC 4

Question

I am unable to run the chat application using singalr and I am facing problem with owin.

The following errors occurred while attempting to load the app:

• No assembly found containing an OwinStartupAttribute.
• No 'Configuration' method was found in class 'Microsoft.VisualStudio.Web.PageInspector.Runtime.Startup, Microsoft.VisualStudio.Web.PageInspector.Runtime, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
• To disable OWIN startup discovery, add the appSetting owin:AutomaticAppStartup with a value of "false" in your web.config. To specify the OWIN startup Assembly, Class, or Method, add the appSetting owin:AppStartup with the fully qualified startup class or configuration method name in your web.config.

Answer 1

Sounds like you're mixing 1.0 and 2.0 components in your project. See the following tutorial for how to upgrade a 1.0 project to 2.0:

http://www.asp.net/signalr/overview/signalr-20/getting-started-with-signalr-20/upgrading-signalr-1x-projects-to-20

Answer 2

Do you have the Startup.cs in your project? More code please.

public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        app.MapSignalR();
    }
}

In addition have you setup any hubs?

public class ChatBoxHub : Hub
{
    public ChatBoxHub()
    {
    }
}