On Wed Oct 19 19:27:01 2011, Sergey Dobrov wrote:
The difference is that presence will be sent by server without
client's
participation. And it's good from the point of traffic economy
view. As
I can understand, the central target of entity capabilities is to
minimize client's traffic. So we lose two important things at one
moment: inconveniently send that thing by hand and serious increase
of
user's traffic.
Other way is to send such stanza by server when client is
connected. But
I can't understand what's the difference with presence probe in such
case. I will be glad if you will help me to understand.
<presence from='[email protected]' to='[email protected]'
type='probe'/>
versus
<presence from='[email protected]/Gajim'
to='[email protected]'>
<c xmlns='...' .../>
</presence>
The main differences:
a) Probes are sent from the bare jid.
b) Probes don't have an unavailable equivalent, needed to later
remove the subscription.
c) Probes don't have the caps inside.
For PEP to work, the PEP service needs to know all three of those, so
basically it needs your presence - or a functional equivalent of it.
Dave.
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