HttpListener Demo : HttpListener : Network C# Examples

    
using  System;
using  System.IO;
using  System.Net;
using  System.Text;
using  System.Threading;

class  WebServer  {
        HttpListener  _listener;
        string  _baseFolder;          

        public  WebServer(string  uriPrefix,  string  baseFolder)  {
                System.Threading.ThreadPool.SetMaxThreads(50,  1000);
                System.Threading.ThreadPool.SetMinThreads(50,  50);
                _listener  =  new  HttpListener();
                _listener.Prefixes.Add(uriPrefix);
                _baseFolder  =  baseFolder;
        }

        public  void  Start()  {                                              
                _listener.Start();
                while  (true)
                        try  {
                                HttpListenerContext  request  =  _listener.GetContext();
                                ThreadPool.QueueUserWorkItem(ProcessRequest,  request);
                        }  catch  (HttpListenerException)  {  break;  }    
                        catch  (InvalidOperationException)  {  break;  }
        }

        public  void  Stop()  {  _listener.Stop();  }

        void  ProcessRequest(object  listenerContext)  {
                try  {
                        var  context  =  (HttpListenerContext)listenerContext;
                        string  filename  =  Path.GetFileName(context.Request.RawUrl);
                        string  path  =  Path.Combine(_baseFolder,  filename);
                        byte[]  msg;
                        if  (!File.Exists(path))  {
                                context.Response.StatusCode  =  (int)HttpStatusCode.NotFound;
                                msg  =  Encoding.UTF8.GetBytes("Sorry,  that  page  does  not  exist");
                        }  else  {
                                context.Response.StatusCode  =  (int)HttpStatusCode.OK;
                                msg  =  File.ReadAllBytes(path);
                        }
                        context.Response.ContentLength64  =  msg.Length;
                        using  (Stream  s  =  context.Response.OutputStream)
                                s.Write(msg,  0,  msg.Length);
                }  catch  (Exception  ex)  {  Console.WriteLine("Request  error:  "  +  ex);  }
        }
}