/**
* Sends a heartbeat to nagios
*
* @param int status status of service (one of NSCA_OK, NSCA_WARN, NSCA_ERROR, NSCA_UNKNOWN)
* @param string message default ''
* @throws io.IOException in case
*/
public function send($status, $message = '')
{
$nsca = new NscaClient($this->server, $this->port, $this->version, NSCA_CRYPT_XOR);
$nsca->connect();
$nsca->send(new NscaMessage($this->host, $this->service, $status, $message));
$nsca->close();
}