Re: [rtcweb] JSEP: Why always offer actpass?

"Makaraju, Maridi Raju (Raju)" <Raju.Makaraju@alcatel-lucent.com> Thu, 04 December 2014 15:15 UTC

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From: "Makaraju, Maridi Raju (Raju)" <Raju.Makaraju@alcatel-lucent.com>
To: =?iso-8859-1?Q?Stefan_H=E5kansson_LK?= <stefan.lk.hakansson@ericsson.com>, Christer Holmberg <christer.holmberg@ericsson.com>, Justin Uberti <juberti@google.com>
Thread-Topic: [rtcweb] JSEP: Why always offer actpass?
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Date: Thu, 4 Dec 2014 15:15:23 +0000
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] JSEP: Why always offer actpass?
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> >>> Once a DTLS connection has been established, if the
> >>> 'active/passive' status of the endpoints change during a session,
> >>> a new DTLS connection MUST be established.  Therefore, endpoints
> >>> SHOULD NOT change the 'active/passive' status in subsequent
> >>> offers and answers,
> >>
> >> Did not the discussion (for rtcweb) conclude that subsequent offers
> >> should offer actpass, but that subsequent answers must say the same
> >> as the previous answer?
> >
> > In the Offer/Answer section, I can define more details regarding the
> > values (actpass etc) to use.
> >
> > BUT, the question is whether we want to allow the endpoints to
> > trigger a new DTLS connection by changing the active/passive status
> > or not. The text above says SHOULD NOT change the active/passive
> > status.
> 
> OK, makes sense to me.

<Raju>
I am ok with it as well.

The strength "SHOULD NOT" seems intentional and I think that is right; so it is still allowed but not recommended.
May be obvious, but please be sure to mention that, independent of last offer/answer direction, new offerer SHOULD include actpass and answerer SHOULD answer with previously negotiated role.

</Raju>

BR
Raju