My question touches closely on this recent thread. I am curious if anyone has been able to do FTP uploads (PUTs) of very large files using LWP without consuming a lot of memory. I tried out something like this code while watching a system monitor (top/gtop/etc) and it ate up lots of memory:

use LWP::UserAgent;
my $url = 'ftp://anonymous:anon@ftp.someserver.com/pub/100mb.file';
my $ua = LWP::UserAgent->new();
$ua->agent("$0/.01 ".$ua->agent);
open (READER, "100mb.file") or die "Can't read: $!\n";
my $req = HTTP::Request->new('PUT', "$url", undef, <READER>);
my $result = $ua->request($req);

[download]

Having never really needed to FTP large files, I never realized how much memory this could eat up. Now I'm worried that some old scripts we have laying around need a bit of reworking in case anyone every tries them with big files. For the sake of some other folks around who aren't familiar with Net::FTP, I'd like to continue to do this using LWP if I can. Anyone know how to reduce the amount of memory needed for something like this?

In reply to Reducing LWP Buffering by Anonymous Monk

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