/// <summary>
/// Send headers to cache the response. Only caches on the server-side for now
/// </summary>
private void ConfigureCaching()
{
_response.AddFileDependency(_fileSystem.MapPath(_request.Url.LocalPath));
_response.Cache.SetCacheability(HttpCacheability.Server);
_response.Cache.SetLastModifiedFromFileDependencies();
_response.Cache.SetETagFromFileDependencies();
}
/// <summary>
/// Adds the HTTP headers for cache expiry, and status code to the current response.
/// </summary>
/// <param name="fullPath">The full virtual path of the file to add cache settings for.</param>
/// <param name="modifiedSinceHeader">The incoming modified since header sent by the browser.</param>
public void AddStatusCodeForCache(string fullPath, string modifiedSinceHeader)
{
if (_context != null)
{
// https://developers.google.com/speed/docs/best-practices/caching
_context.AddFileDependency(fullPath);
FileInfo info = new FileInfo(fullPath);
_context.Cache.SetCacheability(HttpCacheability.Public);
_context.Headers.Add("Expires", "-1"); // always followed by the browser
_context.Cache.SetLastModifiedFromFileDependencies(); // sometimes followed by the browser
int statusCode = GetStatusCodeForCache(info.LastWriteTimeUtc, modifiedSinceHeader);
_context.StatusCode = statusCode;
StatusCode = statusCode;
}
}
private void SetFileCaching(HttpResponseBase response, string fileName)
{
response.AddFileDependency(fileName);
response.Cache.SetETagFromFileDependencies();
response.Cache.SetLastModifiedFromFileDependencies();
response.Cache.SetCacheability(HttpCacheability.Public);
response.Cache.SetMaxAge(new TimeSpan(7, 0, 0, 0));
response.Cache.SetSlidingExpiration(true);
}
/// <summary>
/// Executes the handler. Outputs JavaScript to the response.
/// </summary>
public void Execute()
{
var relativePath = _request.Url.LocalPath;
var result = _environment.JsxTransformer.TransformJsxFile(relativePath);
// Only cache on the server-side for now
_response.AddFileDependency(_fileSystem.MapPath(relativePath));
_response.Cache.SetCacheability(HttpCacheability.Server);
_response.Cache.SetLastModifiedFromFileDependencies();
_response.Cache.SetETagFromFileDependencies();
_response.ContentType = "text/javascript";
_response.Write(result);
}
//TODO: check file path does not contain ".."
public override void OnResultExecuting(ResultExecutingContext ctx)
{
HttpRequestBase request = ctx.RequestContext.HttpContext.Request;
HttpResponseBase response = ctx.RequestContext.HttpContext.Response;
var result = ctx.Result as FilePathResult;
if (result == null)
{
base.OnResultExecuting(ctx);
return;
}
if (!File.Exists(result.FileName))
{
response.StatusCode = 404;
response.StatusDescription = "Not Found";
ctx.Cancel = true;
return;
}
response.AddFileDependency(result.FileName);
//Expensive to great eTags for large files and is not really necessary since we are using LastModified Date
//response.Cache.SetETagFromFileDependencies();
response.Cache.SetLastModifiedFromFileDependencies();
response.Cache.SetCacheability(HttpCacheability.Public);
if (_maxAge > -1)
{
response.Cache.SetMaxAge(new TimeSpan(0, 0, 0, _maxAge));
}
response.Cache.SetSlidingExpiration(true);
if ((request.Headers["If-Modified-Since"] != null) &&
new FileInfo(result.FileName).LastWriteTime <= DateTime.Parse(request.Headers["If-Modified-Since"]).AddSeconds(1))
{
response.StatusCode = 304;
//response.Headers.Add("Content-Encoding", "gzip");
response.StatusDescription = "Not Modified";
ctx.Cancel = true;
}
else
{
base.OnResultExecuting(ctx);
}
}
public override void AddFileDependency(string filename)
{
_httpResponseBase.AddFileDependency(filename);
}
public override void AddFileDependency(string filename)
{
proxiedResponse.AddFileDependency(filename);
}