I am not able to browse services by their sub type. I would have expected that the following works:
jmdns.addServiceListener("_mysub._sub._http._tcp.local.", new MyCallback());
but the callback is never called. Only works without the sub type.
(Avahi/Ubuntu and JmDNS 3.2.2, the service i try to browse is registered and browseable via Avahi with and without sub type).