Vanilla self host ASP.NET web API application

webapi.cs

namespace Foo
{
    using System;
    using System.Net;
    using System.Threading;
    using System.Linq;
    using System.Collections.Generic;
    using System.Text;

    using Newtonsoft.Json;
    using System.Web.Http;
    using System.Web.Http.SelfHost;

    /// <summary>
    /// Main class
    /// </summary>
    public static class MainClass
    {
        static void Main(string[] args)
        {
            var addr = new Uri("http://localhost:8001");
            using (var config = new HttpSelfHostConfiguration(addr))
            {
                config.Routes.MapHttpRoute("default", "api/{controller}");
                using (var srv = new HttpSelfHostServer(config))
                {
                    srv.OpenAsync().Wait();
                    Console.WriteLine("Server started");

                    Console.ReadLine();
                    Console.WriteLine("done");
                }
            }
        }
    }

    public class ProductController : ApiController
    {
        public class Result
        {
            public int Code;
            public object Metadata;
        }

        [HttpPost]
        public Result Post([FromBody]int[] data)
        {
            return new Result
            {
                Code = 1,
                Metadata = data,
            };
        }
    }
}