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Re: [rtcweb] Working Group Last Call for draft-uberti-rtcweb-rfc8829bis-01.txt

Roman Shpount <roman@telurix.com> Mon, 01 November 2021 05:59 UTC

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From: Roman Shpount <roman@telurix.com>
Date: Mon, 01 Nov 2021 01:59:25 -0400
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To: Christer Holmberg <christer.holmberg@ericsson.com>
Cc: Justin Uberti <juberti@alphaexplorationco.com>, Justin Uberti <justin@uberti.name>, RTCWeb IETF <rtcweb@ietf.org>
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Subject: Re: [rtcweb] Working Group Last Call for draft-uberti-rtcweb-rfc8829bis-01.txt
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On Sun, Oct 31, 2021 at 7:46 AM Christer Holmberg <
christer.holmberg@ericsson.com> wrote:

> >2. Make endpoints generate subsequent offers that are valid initial
> offers in 3PCC scenarios. This is what draft 8843 bis does.
>
>
>
> Correct.
>
>
>
> However, keep in mind that it is not only about how to encode the port
> numbers and bundle-only attributes. Sending an initial offer also comes
> with a set of procedures. Some of those (e.g., ICE)  I assume you will have
> to do anyway, as the remote endpoint changes.
>
>
>
There is already PeerConnection.restartIce() which will cause the next
offer created after restartIce call to initiate ICE restart, set new
ufrag/pwd, and collect new candidates. This is the method an end point
would call before generating an offer for 3PCC (or to recover a connection
which failed due to bad connectivity). It would not be illogical to set
port zero and bundle-only for all bundled m= lines in this case, when
max-bundle policy is used.

Best Regards,
_____________
Roman Shpount

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