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OWIN Middleware
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);
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