Lifting 1.1 limit in SCS?

[Markus Demleitner]

Hi Mark,

On Thu, Nov 18, 2021 at 02:34:51PM +0000, Mark Taylor wrote:
> On Thu, 18 Nov 2021, Markus Demleitner wrote:
> > On Wed, Nov 17, 2021 at 01:19:59PM +0100, Molinaro, Marco wrote:
> > > I took the liberty to draft the erratum:
> > > 
> > > https://wiki.ivoa.net/twiki/bin/view/IVOA/SCS-1_03-Err-2
> > 
> > Thanks for making that move.  I've expanded the erratum a bit, and
> > I'd now be happy with it.
> 
> I prefer Marco's original
> 
>    "The XML content of the response must be compliant with the
>     VOTable Recommendation."

Fair enough -- unless someone else speaks out for the lengthy

>    "Simple Cone Search services MUST return VOTable version 1 documents.
>     This means that clients will have to handle the namespace URIs
>     http://www.ivoa.net/xml/VOTable/v1.1,
>     http://www.ivoa.net/xml/VOTable/v1.2, and
>     http://www.ivoa.net/xml/VOTable/v1.3, where the last namespace
>     will be used for all future VOTable 1 versions.
>     For forward compatibility clients should ignore unknown elements
>     and attributes in these documents as per the IVOA schema versioning
>     policies."

totally feel free to revert -- though I can't say I like either of
"XML content" and "compliant with" very much, which is what made be
try a re-formulation in the first place; perhaps we can go for "SCS
responses are returned in the VOTable format"?)

> I'm dubious also about Markus's mention of BINARY serialization,
> only to point out that it's not relevant here:
> 
>    "We note that, in particular, the main interoperability problem even
>     in the days of SCS 1.03, lack of support for BINARY-serialised tables,
>     is orthogonal to the problem addressed here, as BINARY serialisation
>     was already part of VOTable 1.1."
> 
> I would therefore prefer to delete the middle paragraph of the r2
> impact assessment.

Yeah, that might be hedging too much, and I don't think it's been a
problem in the last 10 years or so any more.  So, yes, chuck it out.

     -- Markus