compress a ASPX pagesthrough this class

compress a ASPX pgaeg through this class
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#region Using



using System;

using System.Web;

using System.IO.Compression;



#endregion
///

/// Compresses the output using standard gzip/deflate.

///

namespace DAL
{
public class CompressionModule : IHttpModule
{
#region IHttpModule Members
void IHttpModule.Dispose()
{
// Nothing to dispose;
}
void IHttpModule.Init(HttpApplication context)
{
context.BeginRequest += new EventHandler(context_BeginRequest);
}
#endregion

#region Compression
private const string GZIP = "gzip";
private const string DEFLATE = "deflate";

void context_BeginRequest(object sender, EventArgs e)
{
HttpApplication app = sender as HttpApplication;
if (app.Request.RawUrl.Contains(".aspx") || app.Request.RawUrl.Contains(".htm") )
{
if (IsEncodingAccepted(GZIP))
{
app.Response.Filter = new GZipStream(app.Response.Filter, CompressionMode.Compress);
SetEncoding(GZIP);
}
else if (IsEncodingAccepted(DEFLATE))
{
app.Response.Filter = new DeflateStream(app.Response.Filter, CompressionMode.Compress);
SetEncoding(DEFLATE);
}
}
}

///

/// Checks the request headers to see if the specified
/// encoding is accepted by the client.
///

private bool IsEncodingAccepted(string encoding)
{
return HttpContext.Current.Request.Headers["Accept-encoding"] != null && HttpContext.Current.Request.Headers["Accept-encoding"].Contains(encoding);
}

///

/// Adds the specified encoding to the response headers.
///

///
private void SetEncoding(string encoding)
{
HttpContext.Current.Response.AppendHeader("Content-encoding", encoding);
}
#endregion
}
}