Call::pingAction

public function pingAction($callId, $requestId, $retransmit = true)
{
	$currentUserId = $this->getCurrentUser()->getId();
	$call = Registry::getCallWithId($callId);
	if (!$call)
	{
		$this->addError(new Error(Loc::getMessage("IM_REST_CALL_ERROR_CALL_NOT_FOUND"), "call_not_found"));
		return null;
	}

	if(!$this->checkCallAccess($call, $currentUserId))
		return null;

	$callUser = $call->getUser($currentUserId);
	if($callUser)
	{
		$callUser->updateLastSeen(new DateTime());
		if($callUser->getState() == CallUser::STATE_UNAVAILABLE)
		{
			$callUser->updateState(CallUser::STATE_IDLE);
		}
	}

	if($retransmit)
	{
		$call->getSignaling()->sendPing($currentUserId, $requestId);
	}

	return true;
}