Piwik\Http::getUserAgent PHP Method

    public static function getUserAgent()
    {
        return !empty($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : 'Piwik/' . Version::VERSION;
    }

 private function getNewCurlHandle($url)
 {
     $ch = curl_init($url);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
     if ($this->acceptInvalidSSLCertificate) {
         curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
     }
     curl_setopt($ch, CURLOPT_USERAGENT, Http::getUserAgent());
     Http::configCurlCertificate($ch);
     return $ch;
 }