A simple HTTP echo server : Web HTTP Server : Network C# Examples

    
using  System;
using  System.Collections.Generic;
using  System.Collections.Specialized;
using  System.IO;
using  System.IO.Compression;
using  System.Net;
using  System.Net.Mail;
using  System.Net.Sockets;
using  System.Runtime.InteropServices;
using  System.Text;
using  System.Threading;
using  System.Xml;

public  class  MainClass
{
        public  static  void  Main()
        {
                using  (HttpListener  listener  =  new  HttpListener())
                {
                        listener.AuthenticationSchemes  =  AuthenticationSchemes.Negotiate;
                        listener.Prefixes.Add("http://localhost:8080/");
                        listener.Prefixes.Add("https://localhost/");
                        listener.Start();

                        HttpListenerContext  ctx  =  listener.GetContext();
                        ctx.Response.StatusCode  =  200;  
                        string  name  =  ctx.Request.QueryString["name"];

                        StreamWriter  writer  =  new  StreamWriter(ctx.Response.OutputStream);
                        writer.WriteLine("<P>Hello,  {0}</P>",  name);
                        
                        writer.WriteLine("<ul>");
                        foreach  (string  header  in  ctx.Request.Headers.Keys)
                        {
                                writer.WriteLine("<li><b>{0}:</b>  {1}</li>",header,  ctx.Request.Headers[header]);
                        }
                        writer.WriteLine("</ul>");

                        writer.Close();
                        ctx.Response.Close();
                        listener.Stop();
                }
        }
}