Re: [MMUSIC] I-D Action: draft-ietf-mmusic-trickle-ice-sip-02.txt

All,

this update should reflect the IETF90 discussion and includes the 
following changes:

-  IANA Consideration and Security Consideration added
-  Added remaining Info Package definition sections as outlined in 
section 10 of [RFC6086]
-  3PCC Consideration added
-  rules for including "a=rtcp-mux" and "a=group: BUNDLE" attributes
-  Clarified that 18x w/o answer is sufficient to create a dialog that 
allows for trickling to start
-  Added definition of application/sdpfrag making 
draft-ivov-mmusic-sdpfrag obsolete
    This includes also a 4566bis-based ABNF,  which makes all SDP fields 
optional,
    but preserves the SDP-inherent order, i.e. based on the principle: 
"Take a valid SDP and strip off the unnecessary parts"
    From there a specific sdpfrag usage needs to impose further 
restrictions.
-  Based on that another, more restricted ABNF was defined for the 
Trickle-ICE package
    It uses 'pseudo' m-lines as separator in sdpfrag bodies for Trickle 
ICE and restricts the valid elements to
    ICE-related attributes, "a=mid", "a=rtcp-mux", "a=group: BUNDLE" and 
a placeholder for future extension in form of attributes.
    I'd like to get feedback if the WG is OK with that approach.

Further feedback would be welcome on a few loose ends.
- Section 5.3 mentions a CUSAX-based approach for discovery of support 
for Trickle-ICE.
   This could either use a few more details on how it works or we 
declare such details as out of scope.
   In the interest of getting the draft done, I'd prefer the latter. 
Other prefs?
- Section 6 and 7 might also fit well in draft-trickle-ice. Thoughts?
- Section 9.8 limits the the rate of INFO requests.
   What maximum rate will give a good trade-off? One INFO every 100ms, 
200ms?

Regards
Thomas

Am 06.07.2015 um 23:34 schrieb internet-drafts@ietf.org:
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>   This draft is a work item of the Multiparty Multimedia Session Control Working Group of the IETF.
>
>          Title           : A Session Initiation Protocol (SIP) usage for Trickle ICE
>          Authors         : Emil Ivov
>                            Thomas Stach
>                            Enrico Marocco
>                            Christer Holmberg
> 	Filename        : draft-ietf-mmusic-trickle-ice-sip-02.txt
> 	Pages           : 32
> 	Date            : 2015-07-06
>
> Abstract:
>     The Interactive Connectivity Establishment (ICE) protocol describes a
>     Network Address Translator (NAT) traversal mechanism for UDP-based
>     multimedia sessions established with the Offer/Answer model.  The ICE
>     extension for Incremental Provisioning of Candidates (Trickle ICE)
>     defines a mechanism that allows ICE agents to shorten session
>     establishment delays by making the candidate gathering and
>     connectivity checking phases of ICE non-blocking and by executing
>     them in parallel.
>
>     This document defines usage semantics for Trickle ICE with the
>     Session Initiation Protocol (SIP).
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-mmusic-trickle-ice-sip/
>
> There's also a htmlized version available at:
> https://tools.ietf.org/html/draft-ietf-mmusic-trickle-ice-sip-02
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-mmusic-trickle-ice-sip-02
>
>
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
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