[development] Proxying Files Downloads Through Drupal

I have a Java web application that creates PDFs and other generated data. I'd like to control it through Drupal, and return the output from the web app as if it were served from Drupal. What are some suggestions how best to proxy this kind of data stream through Drupal? Since the original data stream will likely have the relevant HTTP headers to set the MIME type and content disposition, I'd also like to be able to preserve those during the operation. Thanks, Rob Rob Thorne Torenware Networks http://www.torenware.com