SignalR /signalr/hubs 404 Not Found

Question

I am trying to deploy a SignalR site on IIS. Code all works fine in VS. But getting the 404 not found error trying to resolve signalr/hubs so far I have tried.

1) Changing the Script ref to:

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

2) Modifying Web.Config to include :

<system.webServer>     <validation validateIntegratedModeConfiguration="false" />     <modules runAllManagedModulesForAllRequests="true">     </modules> </system.webServer> 

3) Changing the invoke requests on IIS for UrlMappingsModule.

4) added SignalR.Hosting.AspNet.dll to see if that would help anything.

Not sure what else to try or check, any help or point in the right direction?

Answer 1

The order of route registration matters. I had this exact problem and fixed it by ensuring my global.asax.cs looked like this:

public class MvcApplication : System.Web.HttpApplication {     protected void Application_Start()     {         AreaRegistration.RegisterAllAreas();         RouteTable.Routes.MapHubs();          WebApiConfig.Register(GlobalConfiguration.Configuration);         FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);         RouteConfig.RegisterRoutes(RouteTable.Routes);     } } 

This was in a web site using SignalR, MVC and WebApi all together.

Answer 2

The reason of this 404 error is hubs are not mapped, previously it would have to be done as answered by SimonF. If you are using SignalR version 2 RouteTable.Routes.MapHubs(); is now obsolete. For mapping hubs you can create a startup class as below.

[assembly: OwinStartup(typeof(WebApplication1.Startup))] namespace WebApplication1 {     public class Startup     {         public void Configuration(IAppBuilder app)         {             // Any connection or hub wire up and configuration should go here             app.MapSignalR();         }     } } 

referenace : http://www.asp.net/signalr/overview/releases/upgrading-signalr-1x-projects-to-20