private void EndGetContext(IAsyncResult result)
{
activeQuery++;
Stopwatch t = new Stopwatch();
t.Start();
HttpListenerContext context = ((HttpListener)result.AsyncState).EndGetContext(result);
if (getQuery)
{
Task.Factory.StartNew(() =>
{
using (ImageTransformer image = new ImageTransformer(context))
{
if (image.Validate())
{
image.Transform();
}
}
t.Stop();
curTime += t.ElapsedMilliseconds;
countQuery++;
activeQuery--;
Thread.Sleep(0);
});
}
else
{
context.Response.StatusCode = 409;
context.Response.Close();
activeQuery--;
}
BeginGetContext();
}
protected override void HandleContext(HttpListenerContext listenerContext)
{
string url = listenerContext.Request.Url.ToString();
try
{
// Transform image
string transformName = UrlPartsExtractor.ExtractTransformName(url);
Image imageFromRequest = HttpImageExtractor.ExtractImage(listenerContext,
imageMaxSizeConstraint,
imageMaxWidthConstraint,
imageMaxHeightConstraint);
Image transformedImage = ImageTransformer.TransformImage(imageFromRequest, transformName);
// Crop image
CropArgs cropArgs = UrlPartsExtractor.ExtractCropArguments(url);
Image croppedImage = ImageTransformer.CropImage(transformedImage,
cropArgs.x,
cropArgs.y,
cropArgs.width,
cropArgs.height);
RespondWithOK(listenerContext.Response, croppedImage);
}
catch (Exception e)
{
if (e is NoTransformNameException ||
e is BadImageException ||
e is UnknownTransformException ||
e is BadCropArgumentsException ||
e is CropZeroSizeException)
{
RespondWithError(listenerContext.Response, BAD_REQUEST);
}
else if (e is EmptyIntersectionException)
{
RespondWithError(listenerContext.Response, NO_CONTENT);
}
else
{
RespondWithError(listenerContext.Response, INTERNAL_SERVER_ERROR);
}
return;
}
}