When we request a web page it contains some data to upload on the server and download from the server.
A web page created have lots of white spaces like tabs ,space, new line etc,that make web page 10%-50% heavier in size.
For overcoming this problem,i have use a white space remover class at application level.
Add the following tag into web.config.
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<httpModules>
<add type="WhitespaceModule" name="WhitespaceModule"/>
</httpModules>
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Add the following cs class into app_code folder of your project.
WhiteSpaceModule.cs
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#region Using
using System;
using System.IO;
using System.Web;
using System.IO.Compression;
using System.Text.RegularExpressions;
#endregion
/// <summary>
/// Removes whitespace from the webpage.
/// </summary>
public class WhitespaceModule : IHttpModule
{
#region IHttpModule Members
void IHttpModule.Dispose()
{
// Nothing to dispose;
}
void IHttpModule.Init(HttpApplication context)
{
context.BeginRequest += new EventHandler(context_BeginRequest);
}
#endregion
void context_BeginRequest(object sender, EventArgs e)
{
HttpApplication app = sender as HttpApplication;
if (app.Request.RawUrl.Contains(".aspx") && app.Request.Headers["X-MicrosoftAjax"] != "Delta=true")
{
app.Response.Filter = new WhitespaceFilter(app.Response.Filter);
}
}
#region Stream filter
private class WhitespaceFilter : Stream
{
public WhitespaceFilter(Stream sink)
{
_sink = sink;
}
private Stream _sink;
private static Regex reg = new Regex(@"(?<=[^])\t{2,}|(?<=[>])\s{2,}(?=[<])|(?<=[>])\s{2,11}(?=[<])|(?=[\n])\s{2,}");
#region Properites
public override bool CanRead
{
get { return true; }
}
public override bool CanSeek
{
get { return true; }
}
public override bool CanWrite
{
get { return true; }
}
public override void Flush()
{
_sink.Flush();
}
public override long Length
{
get { return 0; }
}
private long _position;
public override long Position
{
get { return _position; }
set { _position = value; }
}
#endregion
#region Methods
public override int Read(byte[] buffer, int offset, int count)
{
return _sink.Read(buffer, offset, count);
}
public override long Seek(long offset, SeekOrigin origin)
{
return _sink.Seek(offset, origin);
}
public override void SetLength(long value)
{
_sink.SetLength(value);
}
public override void Close()
{
_sink.Close();
}
public override void Write(byte[] buffer, int offset, int count)
{
byte[] data = new byte[count];
Buffer.BlockCopy(buffer, offset, data, 0, count);
string html = System.Text.Encoding.Default.GetString(buffer);
html = reg.Replace(html, string.Empty);
byte[] outdata = System.Text.Encoding.Default.GetBytes(html);
_sink.Write(outdata, 0, outdata.GetLength(0));
}
#endregion
}
#endregion
}
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Remove "&& app.Request.Headers["X-MicrosoftAjax"] != "Delta=true""
condition in if condition if you are not using partial rendering of page,means ajax.
