Re: [ietf-provreg] XML Schema versioning in 4310bis

[Bernie Hoeneisen <bernie@ietf.hoeneisen.ch>]

Hi James

Thanks for this information.

Could you please send me the pointers to the archive where this has been 
discussed? I was unable to locate the relevant posts concerning this 
discussion.

I still believe this is a bad idea from implementors point of view. The 
EPP client needs the means to discover the capabilities of the EPP Server 
which in EPP is done with the hello command and xml schema (incl. version 
number) in the response.

What are the disadvantages if the XML schema version number was changed to 
urn:ietf:params:xml:ns:secDNS-1.1 ?

cheers,
  Bernie


On Mon, 25 Jan 2010, James Gould wrote:

> Bernie,
> 
> We have considered this in prior discussions on the list.  The consensus was to keep backward
> compatibility by keeping the version number the same.  The updated draft is additive to the original
> RFC, so according to the AD this was an acceptable approach.  
> 
> --
> 
> 
> JG
> 
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>    _________________________________________________________________________________________________
> From: Bernie Hoeneisen <bernie@ietf.hoeneisen.ch>
> Date: Mon, 25 Jan 2010 11:09:12 -0500
> To: EPP Provreg <ietf-provreg@cafax.se>
> Subject: [ietf-provreg] XML Schema versioning in 4310bis
> 
> Hi
> 
> As already pointed out to the authors of draft-gould-rfc4310bis, I see an
> issue with the version numbering of the XML Schema. Although rfc4310bis
> changes the XML schema defined in RFC 4310, it intends to reuse the
> version number.
> 
> >From implementor point of view this is a very bad idea. It leads to
> confusion and inconsistencies, in particular in the transition phasis. How
> should an EPP Client figure out the capabilities of the EPP Server? The
> repsonse to hello won't be useful to distiguish which schema applies.
> 
> I run into a similar problem while implementing RFC 5076. As there was a
> change in the schema during the standardization process, I even needed to
> distinguish between early I-D implementions and the final version of the
> XML schema. I solved it by incrementing the sub-version of the XML schema.
> See: http://tools.ietf.org/html/rfc5076#section-7
> 
> Therefore I strongly recommend to increment the (sub-)version number of
> the XML Schema for 4310bis to 1.1
> 
> During transition period, the server can announce both versions and the
> client knows what it is up to.
> 
> cheers,
>   Bernie
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