Subject: Re: [MMUSIC] DTLS-SDP: "actress" to always trigger new DTLS association?

From: Christer Holmberg <[email-masked]>
Date: Mon, 25 Apr 2016 13:01:34 +0000

The subject should obviously say “actpass” :)

Regards,

Christer

From: mmusic <[email-masked]<mailto:[email-masked]>> on behalf of Christer Holmberg <[email-masked]<mailto:[email-masked]>>
Date: Monday 25 April 2016 at 15:59
To: "[email-masked]<mailto:[email-masked]>" <[email-masked]<mailto:[email-masked]>>
Subject: [MMUSIC] DTLS-SDP: "actress" to always trigger new DTLS association?

Hi,

Assume that Alice and Bob have negotiated a DTLS association. Alice has the “active” role, and Bob has the “passive” role.

Now, if Alice sends a new offer, with “passive”, the roles will change and the DTLS association will have to be re-established.

If Alice in the new offer sends “actpass”, it is yet not known whether the roles will change.

However, as the roles MAY change, it has been suggested that the fingerprint/dtls-assocation-id combination needs to be updated in the offer – which by itself requires a new DTLS association :)

MY QUESTION: Is there a case for sending “actpass” without the intention of establishing a new DTLS association – no matter if the roles change or not?

Regards,

Christer