/// <summary>
/// Write a StreamReader to an outpit stream
/// </summary>
/// <param name="reader"></param>
/// <param name="context"></param>
protected static void CompressAndWriteToStream(StreamReader reader, HttpContext context)
{
var compressionType = CompressionModuleHelper.IsSpecificEncodingSupported(context, CompressionModuleHelper.GZIP) ? CompressionModuleHelper.GZIP : CompressionModuleHelper.DEFLATE;
CompressionModuleHelper.SetEncodingType(context.Response, compressionType);
// All the supported content for compression can be read as string, so we use reader.ReadToEnd()
var compressed = CompressionModuleHelper.Compressor(reader.ReadToEnd(), compressionType);
context.Response.OutputStream.Write(compressed, 0, compressed.Length);
reader.Dispose();
}
protected static void OnPostAcquireRequestState(object sender, EventArgs e)
{
var httpContext = HttpContext.Current;
// This part of the module compress only handlers from type System.Web.UI.Page
// Other types such JavaScript or CSS files will be compressed in an httpHandler.
// Here we check if the current handler if a Page, if so, we compress it.
// Because there is a problem with async postbacks compression, we check here if the current request if an 'MS AJAX' call.
// If so, we will not compress it.
// Important !!! : I didn't check this module with another Ajax frameworks such 'infragistics' or 'SmartClient'.
// probably you will have to change the IsAjaxPostBackRequest method.
if (!(httpContext.CurrentHandler is Page || httpContext.CurrentHandler.GetType().BaseType.FullName == "System.Web.Mvc.MvcHandler") || CompressionModuleHelper.IsAjaxPostBackRequest(httpContext))
{
return;
}
if (!CompressionModuleHelper.IsCompressionSupported(httpContext, true))
{
return;
}
var response = httpContext.Response;
// Check if GZIP is supported by the client
if (CompressionModuleHelper.IsSpecificEncodingSupported(httpContext, CompressionModuleHelper.GZIP))
{
response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);
CompressionModuleHelper.SetEncodingType(response, CompressionModuleHelper.GZIP);
}
// If GZIP is not supported, so only DEFLATE is.
else
{
response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
CompressionModuleHelper.SetEncodingType(response, CompressionModuleHelper.DEFLATE);
}
}
