/**
* setup of proxy
* @param CUrl $curl
* @return void
*/
protected function setProxy(CUrl $curl)
{
if (self::$proxyName !== NULL) {
$curl->setOptions(array(\CURLOPT_PROXY => self::$proxyName, \CURLOPT_PROXYPORT => self::$proxyPort, \CURLOPT_PROXYUSERPWD => self::$proxyAuth));
}
}