dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
source = g_timeout_source_new (500);
g_source_set_callback (source, timeout_reply, &closure, NULL);
dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
source = g_timeout_source_new (500);
g_source_set_callback (source, timeout_reply, &closure, NULL);