Re: [MMUSIC] Comments on draft-ietf-mmusic-trickle-ice-01
Rajmohan Banavi <rajmohanbanavi@gmail.com> Fri, 16 January 2015 08:09 UTC
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Date: Fri, 16 Jan 2015 13:39:23 +0530
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From: Rajmohan Banavi <rajmohanbanavi@gmail.com>
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Subject: Re: [MMUSIC] Comments on draft-ietf-mmusic-trickle-ice-01
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I just saw that a new version of the trickle ice draft - draft-ietf-mmusic-trickle-ice-02.txt is out. Have my earlier comments below on the previous draft been taken care of? Thanks, Rajmohan On Thu, Sep 18, 2014 at 12:03 PM, Rajmohan Banavi <rajmohanbanavi@gmail.com> wrote: > Comments on draft-ietf-mmusic-trickle-ice-01 > > > - "Sec 4 Determining Support for Trickle ICE" - "According to > [RFC5245] every time an agent supporting trickle ICE generates an offer or > an answer,". > > Need to be reworded as RFC 5245 has no idea of trickle > > "According to [RFC5245] every time an agent supporting an extension > generates an offer or answer, it must include an identification token in > the ice-options attribute. Accordingly, an agent supporting trickle ICE > must include the "trickle" token in the ice-options attribute." > > > - Trivial typo in sec 1 Introduction. "gathering, candidates" ---> > "gathering candidates". > > > > - Sec 5 Paragraph 5: Fallback must be to Half Trickle rather than > vanilla ICE > > Prior to actually sending an initial offer, agents MAY verify if the > remote party supports trickle ICE, where such mechanisms actually > > exist. If absence of such support is confirmed agents MUST fall back > > to using vanilla ICE or abandon the entire session. > > If it is not possible to determine if the remote party support trickle > ice, then the agent must make use of Half Trickle mechanism described in > sec 4.1. > > > - Sec 8.1 "Check List and Timer State Updates" - there is something > wrong here in this paragraph. Why would a vanilla ICE agent set the state > of a check list to Failed if the pairs in the check list are in succeeded > state (bullet 1)? Further, it says that "if the following two conditions > are satisfied". Is it either one of the two conditions? Good idea to > provide a reference to RFC 5245 (sec 7.1.3.3), since we are describing the > operation of vanilla ICE. > > > > - Trivial type. Sec 9.3 - "Announcing End of Candidates". Duplication > of sentence > > > > - During implementation, one of the issues that surfaced was regarding > the check list timer. RFC 5245 Sec 5.8 "Scheduling Checks" mentions that if > there is no such pair, "Terminate the timer for that check list". This is > obviously not going to work with trickled ice candidates as the candidate > pairs list will keep filling up incrementally. So for trickled ice, the > conditions for stopping of the check list timer must be changed. Probably > the checklist timer must not be stopped until the checklist moves to > completed or Failed state. > > > Cheers, > Rajmohan > >
- [MMUSIC] Comments on draft-ietf-mmusic-trickle-ic… Rajmohan Banavi
- Re: [MMUSIC] Comments on draft-ietf-mmusic-trickl… Rajmohan Banavi