An easy way to get a start is by converting your Curl command to a Perl program using (my) Curl to Perl converter:

#!perl
use strict;
use warnings;

use LWP::UserAgent;

my $ua = LWP::UserAgent->new( 'send_te' => '0' );
my $r  = HTTP::Request->new(
    'GET' => 'https://example.com/',
    [
        'Accept'     => '*/*',
        'User-Agent' => 'curl/7.55.1',
        'Cookie'     => 'session=536...035a'
    ],

);
my $res = $ua->request( $r, ':content_file' => 'HTML_output.txt' );



__END__

Created from curl command line
curl https://example.com --cookie "session=536...035a" -o "HTML_output
+.txt"

[download]

I'm not sure if your Firefox stores its cookies in a cookies.txt file still or if it stores them in an SQLite database nowadays.

In reply to Re: Using LWP (or some other module) to Dowload HTML with Cookie Session ID by Corion
in thread Using LWP (or some other module) to Dowload HTML with Cookie Session ID by Leudwinus

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