localhostBlocker

Blocker.cs

using System;
using System.Web;
using System.Text.RegularExpressions;

namespace localhostBlocker
{
    /// <summary>
    /// localhost access blocker
    /// </summary>
    public class Blocker : IHttpModule
    {
        public void Init(HttpApplication context)
        {
            context.PreRequestHandlerExecute += new EventHandler(OnPreRequestHandlerExecute);
        }
        private void OnPreRequestHandlerExecute(object sender, EventArgs e)
        {
            string hostName = HttpContext.Current.Request.Url.Host;
            if (!String.IsNullOrEmpty(hostName))
            {
                try
                {
                    Regex regx = new Regex(@"^localhost$");
                    if (regx.IsMatch(hostName))
                    {
                        HttpContext.Current.Response.Close();
                    }
                }
                catch (Exception)
                {
                    throw;
                }
            }
        }
        public void Dispose()
        {
        }
    }
}