[Cbor] Draft for an error indication tag (Fwd: I-D Action: draft-richter-cbor-error-tag-00.txt)

[Carsten Bormann <[e-mail]>]

Jörg Richter has suggested defining a CBOR Tag for error indications, beyond what the “undefined” simple value can already do.
I have helped a bit in writing this up.
Maybe we can have a quick sanity check before we ask IANA to register this Tag.
(The suggested value will be 101, ASCII ‘e’ for error, exception.)

Grüße, Carsten


> Begin forwarded message:
> 
> From: [e-mail] <mailto:[e-mail]>
> Subject: I-D Action: draft-richter-cbor-error-tag-00.txt
> Date: January 29, 2019 at 11:22:56 GMT+1
> To: <[e-mail] <mailto:[e-mail]>>
> Reply-To: [e-mail] <mailto:[e-mail]>
> Archived-At: <https://mailarchive.ietf.org/arch/msg/i-d-announce/rLnFJ7vaZKn5EcvR869Ol8tAqAk <https://mailarchive.ietf.org/arch/msg/i-d-announce/rLnFJ7vaZKn5EcvR869Ol8tAqAk>>
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> 
> 
>        Title           : Concise Binary Object Representation (CBOR) Tag for Error Indications
>        Authors         : Joerg Richter
>                          Carsten Bormann
> 	Filename        : draft-richter-cbor-error-tag-00.txt
> 	Pages           : 4
> 	Date            : 2019-01-29
> 
> Abstract:
>   The Concise Binary Object Representation (CBOR, RFC 7049) is a data
>   format whose design goals include the possibility of extremely small
>   code size, fairly small message size, and extensibility without the
>   need for version negotiation.
> 
>   In CBOR, one point of extensibility is the definition of CBOR tags.
>   While CBOR defines representations for null values and for an
>   undefined value, there is no convention for expressing errors or
>   exceptions in data structures, where the actual value desired could
>   not be calculated due to an error.  The present specification defines
>   a tag for such error indications, enabling the addition of varying
>   levels of detail.
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-richter-cbor-error-tag/ <https://datatracker.ietf.org/doc/draft-richter-cbor-error-tag/>
> 
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-richter-cbor-error-tag-00
> https://datatracker.ietf.org/doc/html/draft-richter-cbor-error-tag-00