Created Issue: NRE from System.Web.Http.Dispatcher.HttpRoutingDispatcher.SendAsync [538]

In MVC Controller's action, write code:

HttpClient c = new HttpClient(GlobalConfiguration.DefaultHandler);
c.GetStringAsync("http://localhost/api/Values").Wait();

It will report NRE. I finally make it working with another code:

HttpClient c = new HttpClient(new HttpServer(GlobalConfiguration.DefaultHandler));
c.GetStringAsync("http://localhost/api/Values").Wait();

But it's better to throw meaningful exception in the first scenario if it's not allowed.