MVC Application_PostAuthorizeRequest event not firing when using SignalR

Question

I have an ASP.NET Web API project and I need to access session HttpContext.Current.Session but it's always null in web api

accoriding to Accessing Session Using ASP.NET Web API question I need Application_PostAuthorizeRequest event.

Global.asax.cs

public class MvcApplication : System.Web.HttpApplication
    {
        ...

        protected void Application_PostAuthorizeRequest()
        {
            if (IsWebApiRequest())
            {
                HttpContext.Current.SetSessionStateBehavior(SessionStateBehavior.Required);
            }
        }

        private bool IsWebApiRequest()
        {
            return HttpContext.Current.Request.AppRelativeCurrentExecutionFilePath.StartsWith(WebApiConfig.UrlPrefixRelative);
        }

}

but the problem is Application_PostAuthorizeRequest event never fires. I recently upgraded my project from MVC4 to MVC5.

I can only catch Application_AuthenticateRequest but when I copy the same code in this event it doesn't help and session is still null

Update:

I'm using SignalR to send instant notifications. I found out when I comment this line app.MapSignalR() eveything works as I expected and I can catch the event.

Startup.cs:

[assembly: OwinStartup(typeof(Startup))]
namespace UI
{
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            HttpConfiguration config = new HttpConfiguration();

            ConfigureOAuth(app);

            WebApiConfig.Register(config);
            app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
            app.UseWebApi(config);
            //app.MapSignalR(); when i comment this line I can catch the event
        }

        public void ConfigureOAuth(IAppBuilder app)
        {
            OAuthAuthorizationServerOptions OAuthServerOptions = new OAuthAuthorizationServerOptions()
            {
                AllowInsecureHttp = true,
                TokenEndpointPath = new PathString("/token"),
                // TODO expired time hardcoded
                AccessTokenExpireTimeSpan = TimeSpan.FromHours(24),
                Provider = new SimpleAuthorizationServerProvider(),
                RefreshTokenProvider = new SimpleRefreshTokenProvider()
            };

            // Token Generation
            app.UseOAuthAuthorizationServer(OAuthServerOptions);
            app.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions());

        }
    }
}

can somebody explain what's wrong? why when I comment app.MapSignalR() everything works fine.

Any help will be greatly appreciated!

sorry I was confused with event names, `Application_PostAuthorizeRequest` I should edit my question — esiprogrammer, Mar 08 '16 at 17:26
Possible duplicate of [ASP.NET MVC PostAuthorizeRequest (and other events) not firing](http://stackoverflow.com/questions/5974673/asp-net-mvc-postauthorizerequest-and-other-events-not-firing) — NightOwl888, Mar 08 '16 at 20:38
I don't think it's duplicate, I tried the solution but didn't solve the problem. — esiprogrammer, Mar 09 '16 at 12:21

score 0 · Accepted Answer · answered Apr 22 '16 at 09:42

OK! Finally I found the solution for my own question. I have no idea exactly what's going on but when I register SignalR before Owin and WebApi it works fine, so I moved app.MapSignalR(); to the top.

here is the final Code of Configuration method of Startup.cs :

public void Configuration(IAppBuilder app)
{
    var currentCultureName = CultureInfo.CurrentCulture.Name;
    System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("en-us");
    app.MapSignalR();
    System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo(currentCultureName);

    HttpConfiguration config = new HttpConfiguration();
    ConfigureOAuth(app);

    WebApiConfig.Register(config);
    app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
    app.UseWebApi(config);
}

MVC Application_PostAuthorizeRequest event not firing when using SignalR

Global.asax.cs

1 Answers1