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);
}
}
protected static void OnPreRequestHandlerExecute(object sender, EventArgs e)
{
var httpApplication = (HttpApplication)sender;
var httpContext = httpApplication.Context;
if (!(httpContext.CurrentHandler is AssemblyResourceLoader))
{
return;
}
var response = httpContext.Response;
var request = httpContext.Request;
var etag = (request.QueryString.ToString()).GetHashCode().ToString();
// Check if the ETag is match. If so, we don't send nothing to the client, and stop here.
CheckETag(httpApplication, etag);
try
{
// Parse the QueryString into parts
var urlInfo = GetDataFromQuery(httpApplication.Context.Request.QueryString);
// Load the assembly
var assembly = GetAssembly(urlInfo.First, urlInfo.Second);
if (assembly == null)
{
ThrowHttpException(404, SR.WebResourceCompressionModuleAssemblyNotFound, urlInfo.Forth);
}
//var lastModified = File.GetLastWriteTimeUtc(assembly.Location);
// Get the resource info from assembly.
var resourceInfo = GetResourceInfo(assembly, urlInfo.Third);
if (!resourceInfo.First)
{
ThrowHttpException(404, SR.WebResourceCompressionModuleAssemblyNotFound, urlInfo.Forth);
}
// If the WebResource needs to perform substitution (WebResource inside WebResource), we leave it to the original AssemblyResourceLoader handler ;-)
if (resourceInfo.Second)
{
return;
}
response.Clear();
// Set the response cache headers
SetCachingHeadersForWebResource(response.Cache, etag, Expires);
// Set the response content type
response.ContentType = resourceInfo.Third;
// Write content with compression
if (resourceInfo.Forth && CompressionModuleHelper.IsCompressionSupported(httpContext, false))
{
using (var resourceStream = new StreamReader(assembly.GetManifestResourceStream(urlInfo.Third), true))
{
CompressAndWriteToStream(resourceStream, httpApplication.Context);
}
}
// Write content without compression
else
{
using (var resourceStream = assembly.GetManifestResourceStream(urlInfo.Third))
{
WriteToStream(resourceStream, response.OutputStream);
}
}
response.OutputStream.Flush();
httpApplication.CompleteRequest();
}
catch (ArgumentNullException)
{
return;
}
catch (TargetInvocationException)
{
return;
}
catch (System.Security.Cryptography.CryptographicException)
{
return;
}
}