[Jingle] open issue: removing candidates
stpeter at stpeter.im
Mon May 18 13:55:58 CDT 2009
-----BEGIN PGP SIGNED MESSAGE-----
On 5/13/09 10:11 PM, Justin Karneges wrote:
> On Tuesday 12 May 2009 05:18:12 Olivier Crête wrote:
>> On Mon, 2009-05-11 at 22:23 -0700, Justin Uberti wrote:
>>> The generation attribute is used for when ICE connectivity fails on
>>> all candidates, and a new set of candidates is needed. In this the
>>> client allocates a new set of candidates, and the candidates from the
>>> older generation are to be discarded upon receipt of a candidate from
>>> a newer generation. This would be useful in the case mentioned above
>>> where you get a new IP while the call is active.
>> This looks awfully like an ICE restart.. Except that in that case,
>> instead of changing the generation, you change the credentials (see
>> ICE-19 184.108.40.206).
> Indeed. 220.127.116.11 has a list of "MUST" cases for when you should restart ICE,
> however an IP address change (or a general network connectivity change) is
> not one of them. Instead, the purpose of ICE restarts seems to be more about
> redirecting media mid-stream (read: SIP madness).
> But, I think it could work for recovering from IP/network changes too.
>> Also, if your IP address has changed, the XMPP connection is also gone.
> Yep, you'd need to reconnect to XMPP first in order to perform the restart.
> Moving forward, I think one of two things should happen:
> 1) Remove the currently-documented transport-replace + generation attribute
> approach, so that ICE "restarting" is not possible at all in the context of
> 2) Document how to perform restarting clearly, be sure to call it "ICE
> restarts" for consistency with the ICE draft, and strongly consider using the
> ICE approach (change user/pass, rather than introducing a generation
I'd be OK with #1 for now, and if we find a legitimate use case for #2
when we can add it based on implementation and deployment experience
before XEP-0176 advances from Draft to Final.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.8 (Darwin)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
-----END PGP SIGNATURE-----
More information about the Jingle