public function query()
    {
        // Query every server using it's domain name.
        for ($i = 0; $i < $this->numservers; $i++) {
            $result = $this->querySingleServer($this->server[$i]);
            if ($this->debug) {
                echo "server: {$this->server[$i]}\n";
                echo "result: $result\n";
            }

            if ($result) {
                return $result;
            }
        }
        return false;
    }