BUILD Problems: Connect class chat - perl

Question

I'm having problems with the BUILD method, I want to connect to an HTML-based chat. I wish this class would keep me logged in order to execute the action of sending and receiving messages.
I tried the way down, but it seems that causes a stress on the server while running.
package Shoutbox;
use common::sense;
use WWW::Mechanize;
use WWW::Mechanize::DecodedContent;
use JSON -support_by_pp;
use URI::Escape;
use Moose;
our $url = WWW::Mechanize->new();
$url->get("http://www.forum-invaders.com.br/vb/login.php");
$url->submit_form(
fields => {
vb_login_username => 'login',
vb_login_password => 'senha',
});
has 'msg' => (is => 'rw', isa => 'Str');
sub send_msg {
my $self = shift;
my $message = $self->msg;
my $content = $url->decoded_content;
$content =~ /SECURITYTOKEN = "(.*?)"/g ;
my $token = $1;
if($content =~ /Bem-vindo/gi) {
my $msg = uri_escape($message);
$url->post("http://www.forum-invaders.com.br/vb/vbshout.php",{
message => $msg, securitytoken => $token,
do => "ajax", action => "save", instanceid => "2"});
}
}
sub get_msg{
my $r = $url->get("http://www.forum-invaders.com.br/vb/vbshout.php?type=activeusers&do=ajax&action=fetch&instanceid=2");
my $json = JSON->new->relaxed;
my $s = $json->decode($r->decoded_content);
my $msg = $s->{"shouts"}->{0}->{"message_raw"};
my $user = $s->{"shouts"}->{0}->{"musername"};
my $name;
if ($user =~ />(.+)<\/span/gi) {$name = $1;}
else {$name = $user}
my $now = join(" => ", $name, $msg) . "\n";
return $now;
}
no Moose;
1;
Soon I received an advice to use the BUILD method, so I did so but did not work.
package Shoutbox;
use common::sense;
use WWW::Mechanize;
use WWW::Mechanize::DecodedContent;
use JSON -support_by_pp;
use URI::Escape;
use Moose;
has 'login' => (is => 'rw', isa => 'Str');
has 'password' => (is => 'rw', isa => 'Str');
our $url;
our $token;
sub BUILD{
my $self = shift;
$url = WWW::Mechanize->new();
$url->get("http://www.forum-invaders.com.br/vb/login.php");
$url->submit_form(
fields => {
vb_login_username => $self->login,
vb_login_password => $self->password,
});
my $content = $url->decoded_content;
$content =~ /SECURITYTOKEN = "(.*)"/g;
if ($1 eq "guest"){
print "Login Error\n";
exit;
}
else (print "Login OK!\n";}
$token = $1;
print $token . "\n";
}
has 'msg' => (is => 'rw', isa => 'Str');
sub send_msg {
BUILD;
my $self = shift;
my $message = $self->msg;
my $msg = uri_escape($message);
$url->post("http://www.forum-invaders.com.br/vb/vbshout.php",{
message => $msg, securitytoken => $token,
do => "ajax", action => "save", instanceid => "2"});
}
sub get_msg{
BUILD;
my $r = $url->get("http://www.forum-invaders.com.br/vb/vbshout.php?type=activeusers&do=ajax&action=fetch&instanceid=2");
my $json = JSON->new->relaxed;
my $s = $json->decode($r->decoded_content);
my $msg = $s->{"shouts"}->{0}->{"message_raw"};
my $user = $s->{"shouts"}->{0}->{"musername"};
my $name;
if ($user =~ />(.+)<\/span/gi) {$name = $1;}
else {$name = $user}
my $now = join(" => ", $name, $msg) . "\n";
return $now;
exit;
}
no Moose;
1;