gistfile1.pl

use Mojo::UserAgent;
my $ua = Mojo::UserAgent->new;

$ua->cert(...);
$ua->transactor->http_proxy(...);
$ua->max_redirects(3);

# Say hello to the Unicode snowman with "Do Not Track" header
say $ua->get('www.☃.net?hello=there' => {DNT => 1})->res->body;

__MAYBE__

use Mojo::UserAgent;
my $ua = Mojo::UserAgent->new;

$ua->cert(...);
$ua->proxy->http(...);
$ua->proxy->https(...);
$ua->proxy->without(...); # no
$ua->proxy->detect(...);
$ua->proxy->required(...); # need
$ua->max_redirects(3);

# Say hello to the Unicode snowman with "Do Not Track" header
say $ua->get('www.☃.net?hello=there' => {DNT => 1})->res->body;