protected virtual IAsyncResult ProcessRequestAsyncInternal(HttpContextWrapper context, AsyncCallback cb, object extraData)
{
Blob blob = (Blob)null;
bool flag = this.ProccessBlobRequest((HttpContextBase)context, out blob);
if (blob != null)
{
context.Response.ContentType = MimeMapping.GetMimeMapping(blob.ID.LocalPath);
if (blob is FileBlob)
{
this.TransmitFile((HttpContextBase)context, ((FileBlob)blob).FilePath);
}
else
{
Stream stream = blob.OpenRead();
if (stream.CanSeek)
{
return(this.BeginTransmitStream((HttpContextBase)context, stream, (AsyncCallback)(r => this.DisposeOnCallback(r, cb, (IDisposable)stream)), (object)stream));
}
try
{
this.TransmitStream((HttpContextBase)context, stream);
}
finally
{
stream.Dispose();
}
}
}
AsyncResult asyncResult = new AsyncResult(cb, (object)flag);
asyncResult.SetCompleted();
return((IAsyncResult)asyncResult);
}
private void DownloadBlobData(HttpContextBase context, Blob blob)
{
context.Response.ContentType = MimeMapping.GetMimeMapping(blob.ID.LocalPath);
if (blob is FileBlob)
{
this.TransmitFile(context, ((FileBlob)blob).FilePath);
}
else
{
using (Stream source = blob.OpenRead())
this.TransmitStream(context, source);
}
}
