[mod_python] large file upload using mod_python

I am writing a little piece of code that will handle potentially large 
files, both for upload and download.  I tried the publisher handler, but 
it looks like the publisher handler reads in the whole request and then 
acts on it.  Since the file uploads (and downloads) may be really huge, 
I thought it would be best to get all the HTTP headers and then deal 
with the body of the POST.  Has anyone already done anything like this?  
It looks like I could create my own handler using a Connection object, 
but if someone's already done the work and released the code, no sense 
in reinventing fire.

Thanks,

Jeremy Jones