public static function checkIfZoneIsSleeping($dom)
{
if (Zone::zoneSleeping()) {
/* todo: Should create a SIF_MESSAGE_TYPE for errors */
$_SESSION['SIF_MESSAGE_TYPE'] = 1;
$headerNode = $dom->getElementsByTagName('SIF_Header')->item(0);
$originalMsgId = $headerNode->getElementsByTagName('SIF_MsgId')->item(0)->nodeValue;
$originalSourceId = $headerNode->getElementsByTagName('SIF_SourceId')->item(0)->nodeValue;
$timestamp = Utility::createTimestamp();
$msgId = Utility::createMessageId();
$sifMessageNode = $dom->getElementsByTagName('SIF_Message')->item(0);
XmlHelper::buildSuccessMessage($msgId, $timestamp, $originalSourceId, $originalMsgId, 8);
exit;
}
}