CLDAP::startTls

protected function startTls()
{
	global $APPLICATION;
	
	if($this->isTlsStarted)
		return true;

	if(!@ldap_start_tls($this->conn))
	{
		$APPLICATION->ThrowException('ldap_start_tls() error. '.$this->getLastErrorDescription());
		return false;
	}

	$this->isTlsStarted = true;
	return true;
}