[MMUSIC] Changes for draft-ietf-mmusic-trickle-ice-sip-14 - 3PCC
Thomas Stach <thomass.stach@gmail.com> Sun, 06 May 2018 18:31 UTC
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From: Thomas Stach <thomass.stach@gmail.com>
To: MMUSIC <mmusic@ietf.org>
Cc: "mmusic-chairs@ietf.org" <mmusic-chairs@ietf.org>, "draft-ietf-mmusic-trickle-ice-sip@ietf.org" <draft-ietf-mmusic-trickle-ice-sip@ietf.org>
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Date: Sun, 06 May 2018 20:31:10 +0200
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Subject: [MMUSIC] Changes for draft-ietf-mmusic-trickle-ice-sip-14 - 3PCC
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All, during IESG review we got the below DISCUSS by Adam on the 3PCC procedures. During the discussion the followed Ben indicated that he would be ok to remove the section. In the interest of finishing the document, I'd remove the corresponding section by end of the week, unless somebody objects,. If people think that explicit 3PCC would be needed for Trickle-ICE, this could be deferred to a separate draft. Excerpt from Adam'S IESG review: --------------------------------------------------------------------------- §4.3.4 discusses the interaction of 3PCC with the trickle ICE mechanism. Unfortunately, the diagrams used in this section do not show a 3PCC signaling flow; they show a two-party call flow with an offerless INVITE. A 3PCC call flow would necessarily involve a 3PCC controller sending an offerless INVITE to one party, receiving an offer from that party (typically in a reliable provisional response or in a 200 OK), and then sending an INVITE to the other party containing that offer. The text in this section matches the diagrams, and consequently does not appear to be an analysis of 3PCC behavior. It is an analysis of two-party offerless INVITE behavior. If this section remains, it needs to be substantially re-worked: the diagrams need to show three parties, with a 3PCC controller performing the controlling role as described in RFC 3725. While I haven't stepped through the implications for Trickle ICE when a controller is actually involved and is moving offers and answers around between different message types, I suspect that the analysis in here is substantially different once this starts happening. I would personally be okay if the entire section were removed; however, I have no desire to override working group consensus regarding the value of a section dealing with 3PCC considerations. --------------------------------------------------------------------------- Regards Thomas
- [MMUSIC] Changes for draft-ietf-mmusic-trickle-ic… Thomas Stach