use a sniffer to have a look at the messages to and from the server to
request a download.  If the file is short, you can return it as your
response. If it long, you might need to spawn a separate thread, or
use some feature of Servlets I am not familiar with to handle the long
download.

see http://mindprod.com/jgloss/sniffer.html

...

res?  Resin?

..oh, that's a *block*.  Try warming it.  It won't make
it runny, but will soften it (and the smoke smells nice).

Sure, for appropriate money..

..which would be a lot, for Urgent! requests with
that many 'micro-dots'.  ;-)