Re: [MMUSIC] [Technical Errata Reported] RFC4566 (3278)

["Miguel A. Garcia" <[e-mail]>]

I am adding Ali Begen to the loop, who is the current editor of 4566bis.

Ali, can you please comment on the technical errata?

/Miguel



On 03/07/2012 20:01, RFC Errata System wrote:
>
> The following errata report has been submitted for RFC4566,
> "SDP: Session Description Protocol".
>
> --------------------------------------
> You may review the report below and at:
> http://www.rfc-editor.org/errata_search.php?rfc=4566&eid=3278
>
> --------------------------------------
> Type: Technical
> Reported by: Riccardo Bernardini <[e-mail]>
>
> Section: 5
>
> Original Text
> -------------
> At page 9:
>
>
>
>
>
>        Media description, if present
>
>           m=  (media name and transport address)
>
> Corrected Text
> --------------
>
>
>        Media description, if present
>
>           m=* (media name and transport address)
>
>
>
>
>
> Notes
> -----
> A '*' is added making "m=" lines optional
>
>
>
> Rationale:
>
> The description about media lines in section 5, page 9 is conflicting with the ABNF syntax of media-description in Section 9, page 40
>
>
>
> media-descriptions =  *( media-field
>
>                           information-field
>
>                           *connection-field
>
>                           bandwidth-fields
>
>                           key-field
>
>                           attribute-fields )
>
>
>
> According to the ABNF grammar, an SDP description can have zero "m=" lines, but according to the description at page 9, at least one line must be present.  Note that the conflict could be solved also by replacing the media-descriptions definition with
>
>
>
>     media-descriptions =  1*( media-field ... )
>
>
>
> but at page 8 (still Section 5) it is said
>
>
>
>     An SDP session description consists of a session-level section
>
>     followed by zero or more media-level sections. ...
>
>                 ^^^^^^^^^^^^^^^^^^^^^^^^
>
>
>
> so, I guess that the ABNF grammar is correct.
>
> Instructions:
> -------------
> This errata is currently posted as "Reported". If necessary, please
> use "Reply All" to discuss whether it should be verified or
> rejected. When a decision is reached, the verifying party (IESG)
> can log in to change the status and edit the report, if necessary.
>
> --------------------------------------
> RFC4566 (draft-ietf-mmusic-sdp-new-26)
> --------------------------------------
> Title               : SDP: Session Description Protocol
> Publication Date    : July 2006
> Author(s)           : M. Handley, V. Jacobson, C. Perkins
> Category            : PROPOSED STANDARD
> Source              : Multiparty Multimedia Session Control
> Area                : Real-time Applications and Infrastructure
> Stream              : IETF
> Verifying Party     : IESG
>

-- 
Miguel A. Garcia
[phone]
Ericsson Spain