30 Sep
2010
30 Sep
'10
1:47 p.m.
On 9/30/10 12:46 AM, Iñaki Baz Castillo wrote:
2010/9/30 Daniel-Constantin
Mierla<miconda(a)gmail.com>om>:
Yes, but
this mechanism is a bit "weak". Imagine I'm allowed by Bob
and retrieve his icon. Later Bob's blocks me. Now if my client tries
to retrieve his icon again I would receive a 403 or 404 (customizable
using the script). Any code tells me that I've been blocked.
For sure all of us know web pages like "Discover if your friend has
blocked you in MSN !!!". Well, here is a way to do the same in this
"cool" SIP/SIMPLE specification.
And there is no solution. When I block a user he must believe that
I've been disconnected, but since icon is retrieved via HTTP from a
permanent storage then there is way to realize that I've blocked such
user. The only solution is carrying the icon in the NOTIFY itself as
XMPP does (by default).
You know I agree that the SIMPLE specs are not that good
and really
looking forward for a better alternative.
Funny enough, we talk about all these advanced things, like
within-document references, while there are no clients implementing
properly the basics. Like, ok, let's have the buddy list in one document
for now and working well.
I don't think that xmpp has external references in buddy list, am I
wrong? That means 80% of open IM market didn't feel the need for it.
With private IM networks, I couldn't spot client options for it (e.g.,
yahoo, skype, etc).
Cheers,
Daniel
--
Daniel-Constantin Mierla
http://www.asipto.com
This
means that the XCAP server MUST behave as a SIP presence server
in order to allow or deny the icon of user B to user A. Painful? Yes.
Well, then
this xcap server can do more than I expected so far, because it
can behave like a presence server :-) since kamailio is a presence server.
You can check the authorization status for watchers in config, iirc, Juha
added it:
http://kamailio.org/docs/modules/devel/modules_k/presence.html#id2941538
So, when there is a query for someone's resources, you can check in the
config if querying person is allowed to see presence of queried person.