On Feb 24, 2010, at 1:11 AM, Yann Leboulanger <[email protected]>
wrote:
Nathan Fritz wrote:
You must be referring to the 5223 service? The resource hex values
indicate the cluster node your session data. I imagine only one of
the
servers handles old-style jabber connections if it doesn't rewrite
your
resource.
Using the old style auth is NOT xmpp 1.0 compliant while the server
rewriting resouces is acceptable in the spec and I think a really
neat
solution for cluster optimization.
Another reason for the lack of resource rewrite in old style jabber
is
that resource binding didn't exist. In short those connections are
not
xmpp.
No no I mean connected on port 5222, with TLS (not SSL). I'm only
talking about the authentication mechanism. Once connected and tls
proceeded, I send:
<iq xmlns="jabber:client" type="get" id="1"><query
xmlns="jabber:iq:auth"><username>XXX</username></query></iq>
instead of
<auth xmlns="urn:ietf:params:xml:ns:xmpp-sasl" mechanism="DIGEST-
MD5" />
Maybe it's convenient for server admin to have those cluster node in
resource, but as a user, I really don't care and don't want to see
that.
Now the problem is not that the client doesn't support resource
binding,
just that it's not nice from a user point of view.
I didn't realize that Google Talk supported the old auth that way.
It's not part of the RFC. I wouldn't use it as it's probably just
there for compatibility with old clients. The hex value in the
resource is just the reality of using GTalk. It is questionable
whether it's meant for the user to see it anyway.
I also wouldn't be surprised to see more servers use this clustering
strategy in the future. (I know of one that is planning it)
Perhaps some client driven pep is in order for showing a user facing
unique name for individual sessions.
-Nathan Fritz (cellphone)
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