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Re: [rtcweb] DTLS, DTLS-SRTP, and 5-tuples

Iñaki Baz Castillo <ibc@aliax.net> Thu, 05 March 2015 14:37 UTC

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From: Iñaki Baz Castillo <ibc@aliax.net>
Date: Thu, 05 Mar 2015 15:33:54 +0100
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To: Roman Shpount <roman@telurix.com>
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Subject: Re: [rtcweb] DTLS, DTLS-SRTP, and 5-tuples
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2015-03-05 14:58 GMT+01:00 Roman Shpount <roman@telurix.com>:
> I think you are misreading
> http://tools.ietf.org/html/rfc5245#section-8.1.1.2: An end point can start
> sending media once a valid pair is discovered for each component (which is
> actually one component in case of bundle, one component per m= line in case
> of no bundle and rtcp-mux, and two components per m= line in case of
> neither). New valid pairs can still be found when media is being sent and
> media should be switched to the valid pair with the highest priority. When
> all the pairs are checked the final nomination request is sent, but the
> media will start flowing way before that. Alternative would be almost
> unusable since pair of two private IPs for two end-point each behind NAT
> will never get nominated and it will take a long time to time out,
> preventing media from flowing long after call is connected.


Exactly. And that is also stated in the RFC somewhere.


-- 
Iñaki Baz Castillo
<ibc@aliax.net>

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