public static void EnableHttpCompression(HttpContext Context)
{
if (!string.IsNullOrEmpty(Context.Request.Headers.Get("Accept-Encoding")))
{
string acceptEncoding = Context.Request.Headers["Accept-Encoding"];
string[] types =
acceptEncoding.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
if (types.Length > 0)
{
CompressingFilter filter =
HttpCompression.GetFilterForScheme(types, Context.Response.Filter);
if (null != filter)
{
Context.Response.Filter = filter;
}
}
}
}
public void ProcessRequest(HttpContext context)
{
XmlDocument doc = (XmlDocument)context.Cache["doc"];
if (doc == null)
{
XmlTextReader xml =
new XmlTextReader(
context.Server.MapPath(
ConfigurationSettings.AppSettings["MetaFeedRssInputPath"]));
xml.Read();
doc = new XmlDocument();
doc.Load(xml);
doc.RemoveChild(doc.FirstChild);
context.Cache.Insert("doc", doc, new CacheDependency(context.Server.MapPath(ConfigurationSettings.AppSettings["MetaFeedRssInputPath"])));
context.Cache["etag"] = Guid.NewGuid();
xml.Close();
}
string ownETag = context.Cache["etag"].ToString();
string clientETag = context.Request.Headers.Get("If-None-Match");
context.Response.Cache.SetCacheability(HttpCacheability.Public);
context.Response.Cache.SetETag(ownETag);
if (ownETag == clientETag)
{
context.Response.StatusCode = 304;
context.Response.Flush();
context.Response.End();
}
else
{
HttpCompression.EnableHttpCompression(context);
context.Response.Write(doc.InnerXml);
context.Response.ContentType = "application/rss+xml";
context.Response.End();
}
}
