bool QXmppMessageReceiptManager::handleStanza(const QDomElement &stanza)
{
    if (stanza.tagName() != "message")
        return false;

    QXmppMessage message;
    message.parse(stanza);

    // Handle receipts and cancel any further processing.
    if (!message.receiptId().isEmpty()) {
        Q_EMIT messageDelivered(message.from(), message.receiptId());
        return true;
    }

    // If requested, send a receipt.
    if (message.isReceiptRequested()
        && !message.from().isEmpty()
        && !message.id().isEmpty()) {
        QXmppMessage receipt;
        receipt.setTo(message.from());
        receipt.setReceiptId(message.id());
        client()->sendPacket(receipt);
    }

    // Continue processing.
    return false;
}