private byte[] Download(GalleryAgent agent, ImageViewState imageViewState, GalleryImagePath imagePath, GalleryParameterValues values)
{
using (var source = new CancellationTokenSource())
{
var cancelSources = this.CancelSources;
try
{
lock (cancelSources)
{
this.ThrowIfCancelRequested();
cancelSources.Add(source);
}
var downloadRequest = agent.CreateImageRequest(imageViewState.View, imagePath, values);
using (var response = agent.Explorer.Request(downloadRequest, source))
{
if (response.StatusCode == HttpStatusCode.ServiceUnavailable)
{
throw new HttpStatusCodeException(response.StatusCode);
}
imageViewState.Length = response.ContentLength;
imageViewState.Position = 0L;
using (var responseStream = response.ReadAsStream())
{
return(this.Download(imageViewState, responseStream));
}
}
}
finally
{
lock (cancelSources)
{
cancelSources.Remove(source);
}
}
}
}
private string Download(int index, ImageViewState viewState, GalleryParameterValues values)
{
var agent = this.Agent;
var imageView = viewState.View;
var imagePath = agent.GetGalleryImagePath(imageView, values);
if (imagePath.ImageUrl == null)
{
return("RequestNotCreate");
}
else
{
var config = DoujinshiDownloader.Instance.Config.Values.Network;
var retryCount = config.RetryCount;
var fileName = imageView.FileName ?? new Uri(imagePath.ImageUrl).GetFileName();
for (var k = 0; k < retryCount + 1; k++)
{
try
{
this.ThrowIfCancelRequested();
var bytes = this.Download(agent, viewState, imagePath, values);
agent.Validate(imageView, imagePath, values, bytes);
this.OnImageDownload(new TaskImageDownloadEventArgs(this, viewState, imagePath, bytes, index, k));
var pair = this.ConvertForWrite(fileName, bytes);
fileName = pair.Item1;
bytes = pair.Item2;
lock (this.DownloadFile)
{
this.DownloadFile.Write(fileName, bytes);
}
return(null);
}
catch (ImageRequestCreateException e)
{
return(e.Message);
}
catch (HttpStatusCodeException e)
{
if (e.Code == HttpStatusCode.ServiceUnavailable)
{
Thread.Sleep(config.ServiceUnavailableSleep);
}
}
catch (TaskCancelingException)
{
throw;
}
catch (Exception e)
{
if (this.CancelRequested == true)
{
throw;
}
Console.WriteLine(e);
if (k + 1 == retryCount)
{
return("Network");
}
else
{
if (string.IsNullOrWhiteSpace(imagePath.ReloadUrl) == false)
{
imagePath = agent.ReloadImagePath(imageView, imagePath, values);
}
}
}
}
}
return("Unknown");
}