WWW::Mechanize ssl cross-site login failure cookie_jar not populating - perl

Question

The URL $url, redirects to https://auth.outside.com/secure/login for authentication over SSL. The site stores some cookie, as soon as you land on the page, and also some on successful authentication. However, I am not getting the cookie file populated, even when i manage to land on the page. this is an example with google, but real URL is different.
CODE
#!/usr/bin/perl
use warnings;
use strict;
use WWW::Mechanize;
use Crypt::SSLeay;
use HTTP::Cookies;
my $userAgent = 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:35.0) Gecko/20100101 Firefox/35.0';
my $cookie_file = 'auth_cookies.txt';
$ENV{HTTPS_PROXY} = 'http://myproxy.net:8080';
my $google='https://www.google.com';
my $url = $google;
my $tempfile='download_details';
my $mech = WWW::Mechanize->new(
noproxy => 0,
agent => $userAgent,
cookie_jar => HTTP::Cookies->new( file => $cookie_file )
);
my $result=$mech->get( $url, ':content_file' => $tempfile );
print sprintf( "User-Agent %s\n redirects to: %s\n\n", $userAgent, $mech->uri() );
print "result=$result\n";
outputs following:
User-Agent Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:35.0) Gecko/20100101 Firefox/35.0
redirects to: https://www.google.com
result=HTTP::Response=HASH(0x3474ef0)
but does not create any cookie file even thou i can see a bunch of cookies in firebug.

Answer 1

after adding this code, the file is populating...
$mech->cookie_jar->set_cookie(
qw(
3
cat
buster
/
.example.com
0
0
0
)
);