Stuff

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.IO;

namespace httplistnerdemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            HttpListener listener = new HttpListener();
            listener.Prefixes.Add(textBox1.Text);
            listener.Start();

            HttpListenerContext context = listener.GetContext();
            
            HttpListenerRequest request = context.Request;

            WebHeaderCollection hc = (WebHeaderCollection)request.Headers;


            listBox1.Items.Add(request.UserAgent);
            for (int i = 0; i < hc.Count; i++)
            {
               
                listBox1.Items.Add(hc.GetKey(i) + "=" + hc.Get(i));
            }
            HttpListenerResponse response = context.Response;
            WebHeaderCollection hrc = context.Response.Headers;
             
            string responsestring = "<html><title>http listnet demo</title><body>HELLO WORLD!</body></html>";
            byte[] buffer= Encoding.UTF8.GetBytes(responsestring);
            response.ContentLength64 = buffer.Length;

            Stream output = response.OutputStream;
            
            output.Write(buffer, 0, buffer.Length);
            output.Close();

        }
    }
}