using System;

using Owin;

using Microsoft.Owin;

using Microsoft.Owin.Hosting;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Security.Permissions;

​

namespace KatanaIntro

{

    public class Program

    {

        public static void Main()

        {

            string uri= "http://localhost:8080";

            using (WebApp.Start<AppBuilderClass>(uri))

            {

                Console.WriteLine("Started!");

                Console.ReadKey();

                Console.WriteLine("Stopping!");

            }

        }

    }

    public class AppBuilderClass

    {

        public void Configuration(IAppBuilder app)

        {

            app.Run(ctx =>{

                return ctx.Response.WriteAsync("Hello World");

            });

        }

    }

}