I haven't had much of a call for LWP, so I've never had to decompress one chunk at a time. So what I would do is, first, check my system's gzip setup:
#!/usr/bin/perl

use strict;
use warnings;
use HTTP::Message;

my $can_accept = HTTP::Message::decodable();
print $can_accept, "\n";

[download]
It'll return a list of allowed encodings. My system has gzip, x-gzip, deflate, and x-bzip2. Then, in your script, you want to set it up something like this:
#!/usr/bin/perl

use strict;
use warnings;
use LWP::UserAgent;

my $ua = LWP::UserAgent->new;
my $can_accept = HTTP::Message::decodable;
my $response = $ua->get('http://www.perlmonks.org',
    'Accept-Encoding' => $can_accept,
);
print $response->decoded_content(charset => 'none');

[download]
For compression, I'd stick with Compress::Zlib. The documentation has some examples that might be useful for you.

In reply to Re: uncompress gzip data in a callback by Khen1950fx
in thread uncompress gzip data in a callback by Weevil

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