OK, I (after many hours of working with this) have this simple case down): 
if ($url !~ /$regex/)
    {
    die "Can't find url of file in page.\n";
    }
$response = $ua->get($1, ':content_file' => $2);

[download]

I have two complications now.

First, I (in some cases) need to get the file name from the "Content-Disposition:" header. But I want to check it for sanity (a basic ^[-0-9A-Za-z_]) without putting the whole file into memory before I write it. Is there a way to do that?

Second, is there some way to print ALL of the headers (just to stdout is fine) from the syntax above?

I have looked at:

/usr/lib/perl5/vendor_perl/5.8.8/HTTP/Response.pm

But it seems to want to know the header names in advance (and I don't know them before the request - in fact, that is why I want to print them out :)).

Thank you in advance for your help.

In reply to libwww-perl basics by Anonymous Monk

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