Matthew Wild wrote: [...]
This is the problem. It has frequently been raised that the probes sent by the user's server can be detected by a contact's server (think plugins for easily-extensible XMPP servers...) to signal that the user is invisible. This issue is/was present in even ICQ, and they don't need to handle a federated network.
Is there a standard way the contact's server can notify the user about the probe?
Some people prefer "true" invisibility (no probes) and are willing to sacrifice immediate presence (they want to exchange messages with a known JID, or they want to join a chatroom). This isn't the same as not sending presence, because if you don't send presence then you aren't eligible to receive stanzas sent to the bare JID.
So we need to decouple initial presence and the ability to receive stanzas sent to the bare jid?
philipp
