Debugging Self Host OWIN Middleware does not always run

Question

I have a simple console app to learn OWIN/Katana and I am stuck.

class Program
{
    static void Main(string[] args)
    {
        string url = ConfigurationManager.AppSettings["url"];
        using (var app = WebApp.Start<Startup>(url))
        {
            Console.WriteLine("Started listening on {0}", url);
            Console.ReadKey();
            Console.WriteLine("Stopping");
        }
    }
}

This starts up just fine and hits my using block.

I then see that my Startup is called:

Next I startup Postman in Chrome and submit a GET Request. At this point my break points never get hit in either module.

No matter what changes I make it does not log my messages out to the console. Is there a way to find what is failing if anything? In Postman I do receive a HTTP 200 with a payload. The OwinMiddleware class is from the Microsoft.Owin namespace.

EDIT: Tech stack of the Project:

Website (Not Web Application) running AngularJs 1.4 using $resource. WebApi 2.2 with OData V4

Running on .Net 4.5

Answer 1

Your WebApiMiddleware is before the LoggingMiddleware in the pipeline so the request may have been terminated there and may never reach the logging. Add the logging on top, before StartupPrerequsites(app); and try again.