simple c# webserver

SteelGolem

May 16th, 2015

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/*
* simple webserver
* - asynchronous multi-threaded
* - multiple simultaneous connections
*/
using System;
using System.Text;
using System.Net;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
HttpListener listener = new HttpListener();
listener.Prefixes.Add("http://localhost:9999/"); // for testing use, admin not required
//listener.Prefixes.Add("http://+:9999/"); // for production use, requires admin
listener.Start();
listener.BeginGetContext(new AsyncCallback(ProcessRequest), listener);
Console.WriteLine("listening...");
while (listener.IsListening) ; // go FOREVER
// not actually reachable, but your compiler will never know...
Console.WriteLine("done. press any key to exit.");
Console.ReadKey();
}
private static void ProcessRequest(IAsyncResult boxedListener)
{
HttpListener listener = (HttpListener)boxedListener.AsyncState;
HttpListenerContext context = listener.EndGetContext(boxedListener);
HttpListenerRequest request = context.Request;
HttpListenerResponse response = context.Response;
// re-use listener to start listening again immediately, it won't interrupt the current request
listener.BeginGetContext(new AsyncCallback(ProcessRequest), listener);
Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "]"
+ " processing request from " + request.RemoteEndPoint + " for " + request.RawUrl);
SendRequestedFile(response);
Console.WriteLine(request.RemoteEndPoint + "'s file sent.");
}
private static void SendRequestedFile(HttpListenerResponse response)
{
Thread.Sleep(3000); // le simulated work to show that long ops are le fine
string responseString = "<HTML><BODY>Hello world!</BODY></HTML>";
byte[] buffer = Encoding.UTF8.GetBytes(responseString);
response.ContentLength64 = buffer.Length;
Stream outputStream = response.OutputStream;
outputStream.Write(buffer, 0, buffer.Length);
outputStream.Close();
}
}
}

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