OWIN Middleware

Middleware.cs

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Owin;

namespace Middlewares
{
    using AppFunc = Func<IDictionary<string, object>, Task>;

    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            var middleware = new Middleware();
            app.Use(middleware, 10, "auth");
        }
    }

    internal class Middleware
    {
        private AppFunc _next;
        private int _number;
        private string _name;

        public void Initialize(AppFunc next, int number, string name)
        {
            _next = next;
            _number = number;
            _name = name;
        }

        public async Task Invoke(IDictionary<string, object> env)
        {
            Console.WriteLine("before. number: {0}, name: {1}", _number, _name);
            await _next.Invoke(env);
            Console.WriteLine("after. number: {0}, name: {1}", _number, _name);
        }
    }
}