I am a newer using UPA API to construct my app. And I have a quick question about the old socket under some situation where the RSSL_IP_FD_CHANGE is returned E.g. rsslInitChannel My key question is: do I need cleaup the old socket after the unregistration IO of it? For example, should I explicitly close it or release it? at least in the documentation I didn’t see the cleanup. So UPA API has done it for me and only thing I should do is unregistering the IO notification bound? My additional question (if possible) is : what if I don’t unregister the IO for old socket, is it harmful?