/**
* Send a ping to the server.
*
* @param string $to
* @return void
*/
public function ping($to)
{
$iq = new Iq(array('from' => $this->getFrom(), 'id' => uniqid(), 'to' => $to, 'type' => 'get'));
$iq->initDom(new DOMElement('ping', null, 'urn:xmpp:ping'));
$this->stream->send((string) $iq);
}
/**
* @param string $type
* @return Iq
*/
protected function getIq($type = null)
{
$iq = new Iq($this->options);
if (isset($type)) {
$iq->setType($type);
}
return $iq;
}