----  This is what I tried and doesn't work -----

use LWP::UserAgent;
use HTML::Form;
use LWP::Debug qw(+);
use HTTP::Cookies;
use Data::Dumper;

# This site if redirected from another login page where the user
# inputs a specific user/password or if the user and password is passed in , a specific cookie is sets
# Assessing this page directly will have a default cookie set

$site = "http://some_site_with_a_form.com";

# Creating the LWP user agent
$ua = LWP::UserAgent->new;
$ua->agent("Mozilla/5.0");

# Creating cookie container
$cookie_jar = HTTP::Cookies->new();
$cookie_jar->set_cookie(1, "foo", "bar", "/", "http://some_site_with_a_form.com", "9000", 0, 0, 1000, 0);

# tying the cookie container with the user agent
$ua->cookie_jar($cookie_jar);

# get the form from this site
@forms = $ua->post($site); 
$form1 = $forms[0]; # only interested in the first form

# and I can do something here to replace some values 
# from the form 1 but not needed for what I'm trying to show

# $ua->add_cookie_header($form1.click) 
my $res = $ua->request($form1.click);

# shows the cookie is set to default, which tells me 
# whatever I tried to do is useless
print Dumper($res);



-- It seems to work if I go into the site with the
-- userid/password first which then sets the correct 
-- cookie


use LWP::UserAgent;
use HTML::Form;
use LWP::Debug qw(+);
use HTTP::Cookies;
use Data::Dumper;

# This site if redirected from another login page where the user
# inputs a specific user/password or if the user and password is passed in , a specific cookie is sets
# Assessing this page directly will have a default cookie set
$site = "http://some_site_with_a_form.com";

# Creating the LWP user agent
$ua = LWP::UserAgent->new;
$ua->agent("Mozilla/5.0");


# Creating cookie container
$cookie_jar = HTTP::Cookies->new();

# not needing this, just create an empty cookie container
# $cookie_jar->set_cookie(1, "foo", "bar", "/", # "http://some_site_with_a_form.com", "9000", 0, 0, 1000, 0);

# tying the cookie container with the user agent
$ua->cookie_jar($cookie_jar);

# What I have to do, pretending to go into the page with 
# with a password.  But one can see this is lame and 
# very bad form to expose password
$res = $ua->get($site . "?user=admin&password=adminpasswd");

##

@forms = $ua->post($site); 
$form1 = $forms[0]; # only interested in the first form
# and I do something to replace some values from the form 1

# $ua->add_cookie_header($form1.click) 
my $res = $ua->request($form1.click);

# shows the cookie is set for the specific user "admin
print Dumper($res);