public function isAlive(): bool
    {
        if (false === static::$testingEnabled) {
            return false !== fsockopen($this->getHost(), $this->getPort());
        }

        return static::$testingServiceIsUp;
    }
public function isAlive(): bool
    {
        if (false === static::$testingEnabled) {
            return false !== fsockopen($this->getHost(), $this->getPort());
        }

        return static::$testingServiceIsUp;
    }
public function isAlive ( ) : bool { if ( false === static :: $ testingEnabled ) { return false !== fsockopen ( $ this -> getHost ( ) , $ this -> getPort ( ) ) ; } return static :: $ testingServiceIsUp ; }
Checks if the VIES service is online and available

@return bool
Checks if the VIES service is online and available