mono-httplistener-bug.cs

using System;
using System.Net;
using System.Text;
using System.Threading.Tasks;

namespace MonoConsoleApp1
{
    internal class Program
    {
        public static async Task Main(string[] args)
        {
            using (var listener = new HttpListener())
            {
                listener.Prefixes.Add("http://localhost:8080/");
                Console.WriteLine("Ready...");
                
                listener.Start();
                while (listener.IsListening)
                {
                    var context = await listener.GetContextAsync();
                    var buffer = Encoding.UTF8.GetBytes("hello world");
                    context.Response.ContentLength64 = buffer.Length;
                    await context.Response.OutputStream.WriteAsync(buffer, 0, buffer.Length);
                }

                listener.Stop();
            }
        }
    }
}