Re: [bfcpbis] I-D Action: draft-ietf-bfcpbis-rfc4583bis-03.txt

Jonathan Lennox <jonathan@vidyo.com> Mon, 15 October 2012 22:15 UTC

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From: Jonathan Lennox <jonathan@vidyo.com>
To: "Charles Eckel (eckelcu)" <eckelcu@cisco.com>
Date: Mon, 15 Oct 2012 18:15:29 -0400
Thread-Topic: [bfcpbis] I-D Action: draft-ietf-bfcpbis-rfc4583bis-03.txt
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Cc: "bfcpbis@ietf.org" <bfcpbis@ietf.org>, "Tom Kristensen (tomkrist)" <tomkrist@cisco.com>
Subject: Re: [bfcpbis] I-D Action: draft-ietf-bfcpbis-rfc4583bis-03.txt
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I greatly apologize; I should have sent this earlier.

There are some BFCP usages in the IMTC Role-Based Video Streams work <https://datatracker.ietf.org/liaison/1170/> which have some unusual features -- in particular, it recommends sending an offer with a BFCP stream referencing an mstrm that does not yet exist.  (The intention is that if the SDP answer indicates that the peer understands both BFCP and the SDP content attribute, a re-INVITE can be sent adding an additional BFCP-controlled video stream with "content:slides".)

This document should probably call out that usage, at least to indicate that it's valid for an mstrm to reference an undefined label.


On Oct 15, 2012, at 12:29 PM, Charles Eckel (eckelcu) wrote:

> (As co-chair)
> 
> For everyone, if there are any outstanding issues of questions you have related to this draft, please share them now.
> We plan to proceed with the proto writeup soon. 
> 
> Cheers,
> Charles
> 
>> -----Original Message-----
>> From: bfcpbis-bounces@ietf.org [mailto:bfcpbis-bounces@ietf.org] On
>> Behalf Of Tom Kristensen (tomkrist)
>> Sent: Friday, October 12, 2012 5:02 AM
>> To: bfcpbis@ietf.org
>> Subject: Re: [bfcpbis] I-D Action: draft-ietf-bfcpbis-rfc4583bis-03.txt
>> 
>> On 10/12/2012 01:54 PM, internet-drafts@ietf.org wrote:
>>> A New Internet-Draft is available from the on-line Internet-Drafts
>> directories.
>>>  This draft is a work item of the Binary Floor Control Protocol Bis  Working
>> Group of the IETF.
>>> 
>>> 	Title           : Session Description Protocol (SDP) Format for Binary
>> Floor Control Protocol (BFCP) Streams
>>> 	Author(s)       : Gonzalo Camarillo
>>>                           Tom Kristensen
>>> 	Filename        : draft-ietf-bfcpbis-rfc4583bis-03.txt
>>> 	Pages           : 15
>>> 	Date            : 2012-10-12
>>> 
>>> Abstract:
>>>    This document specifies how to describe Binary Floor Control Protocol
>>>    (BFCP) streams in Session Description Protocol (SDP) descriptions.
>>>    User agents using the offer/answer model to establish BFCP streams
>>>    use this format in their offers and answers.
>>> 
>>>    This document obsoletes RFC 4583.  Changes from RFC 4583 are
>>>    summarized in section 12.
>>> 
>> 
>> No comments or input received after WGLC. Anyway, this is a short,
>> simple draft where the changes follows more or less automatically from
>> the extensions in rfc4582bis.
>> 
>> After checking out with the original author of RFC 4583, the ipr
>> parameter is changed s/pre5378Trust200902/trust200902/.
>> 
>> Cf. <URL:
>> http://tools.ietf.org//rfcdiff?url1=http://tools.ietf.org/id/draft-ietf-bfcpbis-
>> rfc4583bis-02.txt&url2=http://tools.ietf.org/id/draft-ietf-bfcpbis-rfc4583bis-
>> 03.txt
>>> 
>> 
>> -- Tom
>> 
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--
Jonathan Lennox
jonathan@vidyo.com