Horde_SyncMl_ContentHandler::handleEnd PHP Method

    public function handleEnd()
    {
        global $messageFull;
        $state = $GLOBALS['backend']->state;
        /* If there's pending sync data and space left in the message, send
         * data now. */
        if ($messageFull || $state->hasPendingSyncs()) {
            /* still something to do: don't close session. */
            $GLOBALS['message_expectresponse'] = true;
        }
        if (!$messageFull && count($p = $state->getPendingSyncs()) > 0) {
            foreach ($p as $pendingSync) {
                if (!$messageFull) {
                    $GLOBALS['backend']->logMessage('Continuing sync for syncType ' . $pendingSync, 'DEBUG');
                    $sync =& $state->getSync($pendingSync);
                    $sync->createSyncOutput($this->_xmlWriter);
                }
            }
        }
        if (isset($state->curSyncItem)) {
            $this->_xmlWriter->outputAlert(Horde_SyncMl::ALERT_NO_END_OF_DATA, $state->curSyncItem->sync->getClientLocURI(), $state->curSyncItem->sync->getServerLocURI(), $state->curSyncItem->sync->getServerAnchorLast(), $state->curSyncItem->sync->getServerAnchorNext());
        }
        /* Don't send the final tag if we haven't sent all sync data yet. */
        if ($this->_gotFinal) {
            if (!$messageFull && !$state->hasPendingSyncs()) {
                /* Create <Final></Final>. */
                $this->_xmlWriter->outputFinal();
                $GLOBALS['backend']->logMessage('Sending <Final> to client', 'DEBUG');
                $state->delayedFinal = false;
            } else {
                $GLOBALS['message_expectresponse'] = true;
                /* Remember to send a Final. */
                $state->delayedFinal = true;
            }
        } elseif ($state->delayedFinal) {
            if (!$messageFull && !$state->hasPendingSyncs()) {
                /* Create <Final></Final>. */
                $this->_xmlWriter->outputFinal();
                $GLOBALS['backend']->logMessage('Sending delayed <Final> to client', 'DEBUG');
                $state->delayedFinal = false;
            } else {
                $GLOBALS['message_expectresponse'] = true;
            }
        }
        /* Create </SyncML>. Message is finished now! */
        $this->_xmlWriter->outputEnd();
        if ($this->_gotFinal && !$GLOBALS['message_expectresponse'] && $state->isAllSyncsComplete()) {
            /* This packet did not contain any real actions, just status and
             * map. This means we're done. The session can be closed and the
             * anchors saved for the next sync. */
            foreach ($state->getSyncs() as $sync) {
                $sync->closeSync();
            }
            $GLOBALS['backend']->logMessage('Session completed and closed', 'DEBUG');
            /* Session can be closed here. */
            $GLOBALS['backend']->sessionClose();
        } else {
            $GLOBALS['backend']->logMessage('Return message completed', 'DEBUG');
        }
    }