title: Grab a ProgressEvent from a POST upload in as3
body: <p>Is there any way to track the status of a posted upload in AS3? There is a ProgressEvent, but it gives data back about the response, not the actual POST upload. I'm posting binary data for an image, so it's usually in the 50-100kb range. </p>
  
  <p>The image data was generated inside Flash itself, so I can't use the upload method - at least as far as I know.</p>
  
  <p>Thanks!</p>