public static void doCompression()
{
HttpContext context = HttpContext.Current;
HttpRequest request = context.Request;
string acceptEncoding = request.Headers["Accept-Encoding"];
HttpResponse response = context.Response;
if (!string.IsNullOrEmpty(acceptEncoding))
{
acceptEncoding = acceptEncoding.ToUpperInvariant();
if (acceptEncoding.Contains("GZIP"))
{
response.Filter = new GZipStream(context.Response.Filter, CompressionMode.Compress);
response.AppendHeader("Content-encoding", "gzip");
}
else if (acceptEncoding.Contains("DEFLATE"))
{
response.Filter = new DeflateStream(context.Response.Filter, CompressionMode.Compress);
response.AppendHeader("Content-encoding", "deflate");
}
}
response.Cache.VaryByHeaders["Accept-Encoding"] = true;
}
Here we are checking if the Request header contains [“Accept-Encoding”]. Based on the encoding it supports we filter the response using GZipStream / DeflateStream which are available in System.IO.Compression namespace. Thus the response will be compressed.
Only this will not help the client to render your page properly. You need to add the Content-Encoding header to the response, so it can decompress the response in the client properly. We add Response header “Accept-Encoding” so that request is also made from now using the same encoding it is sending the data. Read Disclaimer Notice