use strict;
   use warnings;
   use LWP;
   use JIRA::REST;



my $browser = LWP::UserAgent->new;
$browser->proxy(['http','https'],'http://myproxy:8080');
$browser->agent("Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0");
  
my %client = ('useragent' => $browser);
my $clientref = \%client;

my $jira = JIRA::REST->new('https://myurl:8443/jira', 'myuser', 'mypass', $clientref);
print $jira->GET("/issue/myissue");