private void CompressDynamicContent(object sender, EventArgs e)
{
if (Globals.UseDynamicCompress && !Common.CommonUtil.ContainsInstalledKey(Context) && Context.Items.Contains("need-compress"))
{
if (string.IsNullOrEmpty(Context.Request.Form["_ajaxpanelid"]) && string.IsNullOrEmpty(Context.Request.QueryString["_ajaxpanelid"]))
{
Common.CommonUtil.SetInstalledKey(Context);
string realPath = Request.Path.Remove(0, Request.ApplicationPath.Length + 1);
Response.Cache.VaryByHeaders["Accept-Encoding"] = true;
CompressingType compressingType = RequestUtil.GetCompressingType(Context);
if (compressingType == CompressingType.GZip)
{
Response.Filter = new GZipFilter(Response.Filter);
}
else if (compressingType == CompressingType.Deflate)
{
Response.Filter = new DeflateFilter(Response.Filter);
}
}
}
}
public static bool CompressStaticContent(HttpContext context)
{
if (Globals.UseStaticCompress == false || StringUtil.EndsWithIgnoreCase(context.Request.PhysicalPath, ".fast.aspx") == false)
{
return(false);
}
SetInstalledKey(context);
string physicalPath = context.Request.PhysicalPath.Remove(context.Request.PhysicalPath.Length - 10);
string contentType = null;
if (StringUtil.EndsWithIgnoreCase(physicalPath, ".css"))
{
contentType = "text/css";
}
else if (StringUtil.EndsWithIgnoreCase(physicalPath, ".js"))
{
contentType = "application/x-javascript";
}
else
{
return(false);
}
CompressingType compressingType = RequestUtil.GetCompressingType(context);
context.Response.ClearHeaders();
if (compressingType == CompressingType.None)
{
if (File.Exists(physicalPath))
{
DateTime lastModified = File.GetLastWriteTime(physicalPath);
if (context.Request.Headers["If-Modified-Since"] != null)
{
DateTime ifModifiedSince;
if (DateTime.TryParse(context.Request.Headers["If-Modified-Since"].Split(';')[0], out ifModifiedSince))
{
if (ifModifiedSince > lastModified.AddSeconds(-1))
{
context.Response.StatusCode = 304;
context.Response.StatusDescription = "Not Modified";
context.ApplicationInstance.CompleteRequest();
return(true);
}
}
}
context.Response.ContentType = contentType;
if (lastModified < DateTime.Now)
{
context.Response.Cache.SetLastModified(lastModified);
}
context.Response.Cache.SetETag(lastModified.Ticks.ToString());
context.Response.BinaryWrite(File.ReadAllBytes(physicalPath));
context.ApplicationInstance.CompleteRequest();
}
}
else
{
string cacheKey = string.Concat("fast.aspx/", compressingType.ToString(), "/", physicalPath);
FastAspxCacheData cacheData = null;
if (CacheUtil.TryGetValue <FastAspxCacheData>(cacheKey, out cacheData) == false)
{
if (File.Exists(physicalPath))
{
cacheData = new FastAspxCacheData();
using (MemoryStream stream = new MemoryStream())
{
Stream compressStream = null;
if (compressingType == CompressingType.GZip)
{
compressStream = new System.IO.Compression.GZipStream(stream, System.IO.Compression.CompressionMode.Compress);
}
else if (compressingType == CompressingType.Deflate)
{
compressStream = new System.IO.Compression.DeflateStream(stream, System.IO.Compression.CompressionMode.Compress);
}
byte[] buffer = File.ReadAllBytes(physicalPath);
compressStream.Write(buffer, 0, buffer.Length);
compressStream.Close();
compressStream.Dispose();
compressStream = null;
cacheData.Data = stream.ToArray();
}
cacheData.LastModified = File.GetLastWriteTime(physicalPath);
CacheUtil.Set <FastAspxCacheData>(cacheKey, cacheData, CacheTime.Long, CacheExpiresType.Sliding, new CacheDependency(physicalPath));
}
}
if (cacheData != null && cacheData.Data.Length > 0)
{
if (context.Request.Headers["If-Modified-Since"] != null)
{
DateTime ifModifiedSince;
if (DateTime.TryParse(context.Request.Headers["If-Modified-Since"].Split(';')[0], out ifModifiedSince))
{
if (ifModifiedSince > cacheData.LastModified.AddSeconds(-1))
{
context.Response.StatusCode = 304;
context.Response.StatusDescription = "Not Modified";
context.ApplicationInstance.CompleteRequest();
return(true);
}
}
}
context.Response.Cache.VaryByHeaders["Accept-Encoding"] = true;
context.Response.ContentType = contentType;
if (compressingType == CompressingType.GZip)
{
context.Response.AppendHeader("Content-Encoding", "gzip");
}
else
{
context.Response.AppendHeader("Content-Encoding", "deflate");
}
if (cacheData.LastModified < DateTime.Now)
{
context.Response.Cache.SetLastModified(cacheData.LastModified);
}
context.Response.Cache.SetETag(cacheData.LastModified.Ticks.ToString());
context.Response.BinaryWrite(cacheData.Data);
context.ApplicationInstance.CompleteRequest();
}
}
return(true);
}
