[ic] Out of memory problems with Downloadable products.

[interchange-users@icdevgroup.org (Nathan Pitts)]

Hello.
  I have recently put Interchange online as the ecommerce application 
for my company. We are offering our software products for download, 
available as CD-ROM ISO images.
  Each time that a customer attempts to download a product, the 
webserver runs out of  memory.
  I have figured out what the problem is, but not how to fix it.
  It appears that in /usr/lib/interchange/bin/interchange, a download is 
handled by a subroutine called do_deliver. This do_deliver sub is a call 
to /usr/lib/interchange/lib/Vend/Util.pm->readfile and then a call
to /usr/lib/interchange/lib/Vend/Server.pm->respond.
  The problem is that Util::readfile performs a "slurp" on the file to 
be delivered, meaning it tries to read the entire file into memory 
before delivering it. With a 650 MB ISO image, this is not a viable 
solution, especially considering that more than one user may be 
downloading at 1 time.
  Has anyone out there used Interchange to serve large downloads? Is it 
possible?

Thanks in advance.
Nathan Pitts