Re: [MMUSIC] FW: New Version Notification for draft-reddy-mmusic-ice-happy-eyeballs-02.txt

Ari Keränen <ari.keranen@ericsson.com> Mon, 04 November 2013 15:55 UTC

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From: Ari Keränen <ari.keranen@ericsson.com>
To: "Tirumaleswar Reddy (tireddy)" <tireddy@cisco.com>
Thread-Topic: [MMUSIC] FW: New Version Notification for draft-reddy-mmusic-ice-happy-eyeballs-02.txt
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Date: Mon, 04 Nov 2013 15:55:21 +0000
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Cc: "mmusic@ietf.org" <mmusic@ietf.org>
Subject: Re: [MMUSIC] FW: New Version Notification for draft-reddy-mmusic-ice-happy-eyeballs-02.txt
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On Nov 4, 2013, at 6:00 AM, Tirumaleswar Reddy (tireddy) wrote:

>> -----Original Message-----
>> From: Ari Keränen [mailto:ari.keranen@ericsson.com]
>> Sent: Monday, November 04, 2013 12:10 PM
>> To: Tirumaleswar Reddy (tireddy); mmusic@ietf.org
>> Subject: Re: [MMUSIC] FW: New Version Notification for draft-reddy-mmusic-ice-
>> happy-eyeballs-02.txt
>> 
>> Hi,
>> 
>> I think the algorithm starts to make sense, but how do you envision to
>> choose the "N" and should there be a negotiation mechanism that ensures
>> that both endpoints choose the same N ?
> 
> I don't think there is any need to negotiate about "N" because it's only local prioritization of candidates. ICE agent can use Happy Eyeballs Extension for ICE algorithm independent of whether remote agent supports it or not. 

Have you done an exercise (or better, implementation?) on how the candidate pairs would then look like? Since ICE uses MAX/MIN sorting of the pairs (see http://tools.ietf.org/html/rfc5245#appendix-B.5) simply having high priority on the other side may not give the results you want.


Cheers,
Ari