protected void SetClientCacheHeader(DateTime?LastModified, string Etag, HttpCacheability CacheKind, bool ReValidate = true)
{
if (!EnableClientCache || LastModified == null && Etag == null)
{
return;
}
HttpCachePolicyBase cp = Response.Cache;
cp.AppendCacheExtension("max-age=" + 3600 * MaxClientCacheAgeInHours);
if (ReValidate)
{
cp.AppendCacheExtension("must-revalidate");
cp.AppendCacheExtension("proxy-revalidate");
}
cp.SetCacheability(CacheKind);
cp.SetOmitVaryStar(false);
if (LastModified != null)
{
cp.SetLastModified(LastModified.Value);
}
cp.SetExpires(DateTime.UtcNow.AddHours(MaxClientCacheAgeInHours));
if (Etag != null)
{
cp.SetETag(Etag);
}
}
protected virtual void SetCache(HttpResponseBase response, int cacheDuration, params string[] varyByParams)
{
// Cache
if (cacheDuration > 0)
{
DateTime timestamp = DateTime.Now;
HttpCachePolicyBase cache = response.Cache;
int duration = cacheDuration;
cache.SetCacheability(HttpCacheability.Public);
cache.SetAllowResponseInBrowserHistory(true);
cache.SetExpires(timestamp.AddSeconds(duration));
cache.SetMaxAge(new TimeSpan(0, 0, duration));
cache.SetValidUntilExpires(true);
cache.SetLastModified(timestamp);
cache.VaryByHeaders["Accept-Encoding"] = true;
if (varyByParams != null)
{
foreach (var p in varyByParams)
{
cache.VaryByParams[p] = true;
}
}
cache.SetOmitVaryStar(true);
response.AddHeader("Cache-Control", string.Format("public, max-age={0}", cacheDuration));
}
}
public void Apply(HttpCachePolicyBase policy)
{
policy.ThrowIfNull("policy");
if (!_hasPolicy)
{
return;
}
switch (_cacheability)
{
case HttpCacheability.NoCache:
policy.SetCacheability(_allowsServerCaching == true ? HttpCacheability.ServerAndNoCache : HttpCacheability.NoCache);
break;
case HttpCacheability.Private:
policy.SetCacheability(_allowsServerCaching == true ? HttpCacheability.ServerAndPrivate : HttpCacheability.Private);
break;
case HttpCacheability.Public:
policy.SetCacheability(HttpCacheability.Public);
break;
}
if (_noStore == true)
{
policy.SetNoStore();
}
if (_noTransforms == true)
{
policy.SetNoTransforms();
}
if (_clientCacheExpirationUtcTimestamp != null)
{
policy.SetExpires(_clientCacheExpirationUtcTimestamp.Value);
}
if (_clientCacheMaxAge != null)
{
policy.SetMaxAge(_clientCacheMaxAge.Value);
}
if (_allowResponseInBrowserHistory != null)
{
policy.SetAllowResponseInBrowserHistory(_allowResponseInBrowserHistory.Value);
}
if (_eTag != null)
{
policy.SetETag(_eTag);
}
if (_omitVaryStar != null)
{
policy.SetOmitVaryStar(_omitVaryStar.Value);
}
if (_proxyMaxAge != null)
{
policy.SetProxyMaxAge(_proxyMaxAge.Value);
}
if (_revalidation != null)
{
policy.SetRevalidation(_revalidation.Value);
}
}
private static void SetHeaders(BundleResponse response, BundleContext context, bool noCache)
{
if (context.HttpContext.Response != null)
{
if (response.ContentType != null)
{
context.HttpContext.Response.ContentType = response.ContentType;
}
// Do set caching headers if instrumentation mode is on
if (!context.EnableInstrumentation && context.HttpContext.Response.Cache != null)
{
// NOTE: These caching headers were based off of what AssemblyResourceLoader does
// TODO: let the bundle change the caching semantics?
HttpCachePolicyBase cachePolicy = context.HttpContext.Response.Cache;
if (noCache)
{
cachePolicy.SetCacheability(HttpCacheability.NoCache);
}
else
{
cachePolicy.SetCacheability(response.Cacheability);
cachePolicy.SetOmitVaryStar(true);
cachePolicy.SetExpires(DateTime.Now.AddYears(1));
cachePolicy.SetValidUntilExpires(true);
cachePolicy.SetLastModified(DateTime.Now);
cachePolicy.VaryByHeaders["User-Agent"] = true;
// CONSIDER: Last modified logic, need to compute a hash of all the dates/ETag support
}
}
}
}
private void SetBundleHeaders(BundleResponse bundleResponse, BundleContext context)
{
if (context.HttpContext.Response == null)
{
return;
}
if (bundleResponse.ContentType != null)
{
context.HttpContext.Response.ContentType = bundleResponse.ContentType;
}
if (context.EnableInstrumentation || context.HttpContext.Response.Cache == null)
{
return;
}
HttpCachePolicyBase cache = context.HttpContext.Response.Cache;
cache.SetCacheability(bundleResponse.Cacheability);
cache.SetOmitVaryStar(true);
cache.SetExpires(DateTime.Now.AddYears(1));
cache.SetValidUntilExpires(true);
cache.SetLastModified(DateTime.Now);
cache.VaryByHeaders["User-Agent"] = true;
}
private static void PrepareResponseCache(HttpResponseBase response)
{
HttpCachePolicyBase cachePolicy = response.Cache;
DateTime now = DateTime.Now;
cachePolicy.SetCacheability(HttpCacheability.Public);
cachePolicy.VaryByParams["d"] = true;
cachePolicy.SetOmitVaryStar(true);
cachePolicy.SetExpires(now + TimeSpan.FromDays(365));
cachePolicy.SetValidUntilExpires(true);
cachePolicy.SetLastModified(now);
}
/// <summary>
/// Caches the specified instance.
/// </summary>
/// <param name="instance">The instance.</param>
/// <param name="duration">The duration.</param>
public static void Cache(this HttpContextBase instance, TimeSpan duration)
{
HttpCachePolicyBase cache = instance.Response.Cache;
cache.SetCacheability(HttpCacheability.Public);
cache.SetOmitVaryStar(true);
cache.SetExpires(instance.Timestamp.Add(duration));
cache.SetMaxAge(duration);
cache.SetValidUntilExpires(true);
cache.SetLastModified(instance.Timestamp);
cache.SetLastModifiedFromFileDependencies();
cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
}
public override void Process(BundleContext context, BundleResponse bundleResponse)
{
HttpCachePolicyBase cachePolicy = context.HttpContext.Response.Cache;
cachePolicy.SetCacheability(HttpCacheability.Public);
cachePolicy.SetOmitVaryStar(true);
cachePolicy.SetExpires(DateTime.Now.AddDays(3));
cachePolicy.SetValidUntilExpires(true);
cachePolicy.SetLastModified(DateTime.Now);
base.Process(context, bundleResponse);
/* cachePolicy.VaryByHeaders["User-Agent"] = true; */
}
/// <summary>
/// Set the caching policy.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="duration">The duration.</param>
public void Cache(HttpContextBase context, TimeSpan duration)
{
if ((duration > TimeSpan.Zero) || !context.IsDebuggingEnabled) // Do not cache in debug mode.
{
HttpCachePolicyBase cache = context.Response.Cache;
cache.SetCacheability(HttpCacheability.Public);
cache.SetOmitVaryStar(true);
cache.SetExpires(context.Timestamp.Add(duration));
cache.SetMaxAge(duration);
cache.SetValidUntilExpires(true);
cache.SetLastModified(context.Timestamp);
cache.SetLastModifiedFromFileDependencies();
cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
}
}
protected void SendOuptToClient(HttpContextBase context)
{
HttpResponseBase response = context.Response;
HttpCachePolicyBase cache = context.Response.Cache;
cache.SetETag(_etagCacheKey);
cache.SetLastModified(_lastModify);
cache.SetExpires(NetworkTime.Now.AddDays(_durationInDays)); // For HTTP 1.0 browsers
cache.SetOmitVaryStar(true);
cache.SetMaxAge(TimeSpan.FromDays(_durationInDays));
//cache.SetLastModified(NetworkTime.Now);
cache.SetValidUntilExpires(true);
cache.SetCacheability(HttpCacheability.Public);
cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
cache.VaryByHeaders["Accept-Encoding"] = true;// Tell proxy to cache different versions depending on Accept-Encoding
response.ContentType = "application/json";
if (response.IsClientConnected)
{
response.Flush();
}
}
public void Index(string name, string version, string condition)
{
HttpResponseBase response = Response;
WebResourcesSection section = ConfigurationManager.GetSection(Kooboo.Common.Web.AreaHelpers.GetAreaName(this.RouteData));
if (section == null)
{
throw new HttpException(500, "Unable to find the web resource configuration.");
}
ReferenceElement settings = section.References[name];
if (settings == null)
{
throw new HttpException(500, string.Format("Unable to find any matching web resource settings for {0}.", name));
}
Condition conditionInfo = new Condition
{
If = condition ?? string.Empty
};
// filter the files based on the condition (Action / If) passed in
IList <FileInfoElement> files = new List <FileInfoElement>();
foreach (FileInfoElement fileInfo in settings.Files)
{
if (fileInfo.If.Equals(conditionInfo.If))
{
files.Add(fileInfo);
}
}
// Ooutput Type
response.ContentType = settings.MimeType;
Stream output = response.OutputStream;
// Compress
if (section.Compress)
{
string acceptEncoding = Request.Headers["Accept-Encoding"];
if (!string.IsNullOrEmpty(acceptEncoding))
{
acceptEncoding = acceptEncoding.ToLowerInvariant();
if (acceptEncoding.Contains("gzip"))
{
response.AddHeader("Content-encoding", "gzip");
output = new GZipStream(output, CompressionMode.Compress);
}
else if (acceptEncoding.Contains("deflate"))
{
response.AddHeader("Content-encoding", "deflate");
output = new DeflateStream(output, CompressionMode.Compress);
}
}
}
// Combine
using (StreamWriter sw = new StreamWriter(output))
{
foreach (FileInfoElement fileInfo in files)
{
string content;
var dynamicResource = DynamicClientResourceFactory.Default.ResolveProvider(fileInfo.Filename);
if (dynamicResource != null)
{
content = dynamicResource.Parse(fileInfo.Filename);
}
else
{
content = System.IO.File.ReadAllText(Server.MapPath(fileInfo.Filename));
}
switch (settings.MimeType)
{
case "text/css":
content = CSSMinify.Minify(Url, fileInfo.Filename, Request.Url.AbsolutePath, content);
break;
case "text/x-javascript":
case "text/javascript":
case "text/ecmascript":
if (section.Compact && fileInfo.Compact)
{
content = JSMinify.Minify(content);
}
break;
}
sw.WriteLine(content.Trim());
}
}
// Cache
if (section.CacheDuration > 0)
{
DateTime timestamp = HttpContext.Timestamp;
HttpCachePolicyBase cache = response.Cache;
int duration = section.CacheDuration;
cache.SetCacheability(HttpCacheability.Public);
cache.SetExpires(timestamp.AddSeconds(duration));
cache.SetMaxAge(new TimeSpan(0, 0, duration));
cache.SetValidUntilExpires(true);
cache.SetLastModified(timestamp);
cache.VaryByHeaders["Accept-Encoding"] = true;
cache.VaryByParams["name"] = true;
cache.VaryByParams["version"] = true;
cache.VaryByParams["display"] = true;
cache.VaryByParams["condition"] = true;
cache.SetOmitVaryStar(true);
}
}
