QDBusConnection::disconnectFromPeer and QDBusConnection::disconnectFromBus failed if connection is in invalid mode

You can not remove/disconnect QDBusConnection once it enters invalid mode.

void QDBusConnection::disconnectFromBus(const QString &name)
{
if (_q_manager())

{ QMutexLocker locker(&_q_manager()->mutex); QDBusConnectionPrivate *d = _q_manager()->connection(name); if (d && d->mode != QDBusConnectionPrivate::ClientMode) <<<<<< it can be invalid mode !!! return; _q_manager()->removeConnection(name); }

}

And do we really need QDBusConnection::disconnectFromBus and QDBusConnection::disconnectFromPeer?
A simple QDBusConnection::disconnect seems do the job