W3C home > Mailing lists > Public > public-schemaorg@w3.org > April 2019

Re: content negotiation isn't working

From: Richard Wallis <richard.wallis@dataliberate.com>
Date: Thu, 11 Apr 2019 10:41:25 +0100
Message-ID: <CAD47Kz7+z+HQcVSZxxPAxPwpg23TNzEDT+T-kpksd-p3B0J62w@mail.gmail.com>
To: Benjamin Young <byoung@bigbluehat.com>
Cc: Mark Wilkinson UPM <mark.wilkinson@upm.es>, "schema.org Mailing List" <public-schemaorg@w3.org>
For information issue #2206
<https://github.com/schemaorg/schemaorg/issues/2206> has been marked as
"Fixed Awaiting Release" which it should be in the next Schema.org release
(3.6)

~Richard
Richard Wallis
Founder, Data Liberate
http://dataliberate.com
Linkedin: http://www.linkedin.com/in/richardwallis
Twitter: @rjw



On Wed, 10 Apr 2019 at 15:39, Benjamin Young <byoung@bigbluehat.com> wrote:

> `text/turtle` is indeed the registered MIME/media type for Turtle syntax:
> https://www.iana.org/assignments/media-types/text/turtle
>
> Might want to handle both going forward though.
>
> Cheers,
> Benjamin
>
> --
>
> http://bigbluehat.com/
>
> http://linkedin.com/in/benjaminyoung
> ------------------------------
> *From:* Mark Wilkinson UPM <mark.wilkinson@upm.es>
> *Sent:* Wednesday, April 10, 2019 8:14 AM
> *To:* Richard Wallis
> *Cc:* schema.org Mailing List
> *Subject:* Re: content negotiation isn't working
>
> Cheers!
>
> For the moment, I am happy to scrape the linked data description from
> the RDFa.  Just thought it was worth mentioning that it didn't behave as
> I had expected.
>
> b.t.w. I think the generally-accepted MIME type for Turtle is
> "text/turtle".  "application/x-turtle" fell out of favour a while ago,
> as far as I am aware.
>
> Best wishes!
>
> Mark
>
>
> On 4/10/19 1:57 PM, Richard Wallis wrote:
> > Hi Mark,
> >
> > As the implementer of that bit of code, I am certain that that it does
> > not "/incrementally go through the types
> > until the server finds one that it is happy with/".
> >
> > I have raised an issue
> > <https://github.com/schemaorg/schemaorg/issues/2206> to track this
> > which hopefully will lead to a fix in an upcoming release.
> >
> > ~Richard
> > Richard Wallis
> > Founder, Data Liberate
> > http://dataliberate.com
> > Linkedin: http://www.linkedin.com/in/richardwallis
> > Twitter: @rjw
> >
> >
> >
> > On Wed, 10 Apr 2019 at 12:45, Mark Wilkinson UPM
> > <mark.wilkinson@upm.es <mailto:mark.wilkinson@upm.es
> <mark.wilkinson@upm.es>>> wrote:
> >
> >     Hi Richard,
> >
> >     Thanks for the rapid reply.
> >
> >     Yes, if I limit the Accept header to only a single content-type, it
> >     works.  It's a problem if I put all content types together (which is
> >     what the software I am using does).
> >
> >     I think the "correct behaviour" is to incrementally go through the
> >     types
> >     until the server finds one that it is happy with...
> >
> >     Mark
> >
> >
> >     On 4/10/19 1:26 PM, Richard Wallis wrote:
> >     > Hi Mark,
> >     >
> >     > I have just tested this, using curl.   Although I did not get the
> >     > required output for /*all*/ the accept types you listed I did
> >     get the
> >     > correct output serialisations for the types listed on the
> >     developers
> >     > page <https://schema.org/docs/developers.html#conneg>:
> >     >
> >     >  *
> >     >
> >     >     curl-s -L --header "Accept: application/ld+json"
> >     > http://schema.org/Book
> >     >
> >     >  *
> >     >
> >     >     curl-s -L --header "Accept: application/rdf+xml"
> >     > http://schema.org/Book
> >     >
> >     >  *
> >     >
> >     >     curl-s -L --header "Accept: text/plain" http://schema.org/Book
> >     >
> >     >  *
> >     >
> >     >     curl-s -L --header "Accept: application/x-turtle"
> >     > http://schema.org/Book
> >     >
> >     >  *
> >     >
> >     >     curl-s -L --header "Accept: text/csv" http://schema.org/Book
> >     >
> >     > ~Richard
> >     >
> >     > Richard Wallis
> >     > Founder, Data Liberate
> >     > http://dataliberate.com
> >     > Linkedin: http://www.linkedin.com/in/richardwallis
> >     > Twitter: @rjw
> >     >
> >     >
> >     >
> >     > On Wed, 10 Apr 2019 at 12:07, Mark Wilkinson UPM
> >     > <mark.wilkinson@upm.es <mailto:mark.wilkinson@upm.es
> <mark.wilkinson@upm.es>>
> >     <mailto:mark.wilkinson@upm.es <mailto:mark.wilkinson@upm.es
> <mark.wilkinson@upm.es>>>> wrote:
> >     >
> >     >     Dear Schema-team,
> >     >
> >     >
> >     >     It appears that content negotiation isn't quite working
> >     properly for
> >     > schema.org <http://schema.org> <http://schema.org> terms, as
> >     described in
> >     > https://schema.org/docs/developers.html
> >     >
> >     >     The Accept header:  Accept: text/turtle, application/ld+json,
> >     >     application/rdf+xml, text/xhtml+xml, application/n3,
> >     >     application/rdf+n3,
> >     >     application/turtle, application/x-turtle, text/n3, text/turtle,
> >     >     text/rdf+n3, text/rdf+turtle, application/n-triples
> >     >
> >     >     includes several of the content-types that you provide, but
> >     calls
> >     >     using
> >     >     that header return HTML...
> >     >
> >     >
> >     >     Am I misunderstanding?
> >     >
> >     >
> >     >     Mark
> >     >
> >     >
> >     >
> >     >     --
> >     >     Dr. Mark D. Wilkinson
> >     >     BBVA-UPM Industry Chair on Biotechnology
> >     >     Isaac Peral Distinguished Researcher
> >     >     Centro de Biotecnología y Genómica de Plantas UPM-INIA (CBGP)
> >     >     Campus Montegancedo,
> >     >     Autopista M-40 (Km 38)
> >     >     28223-Pozuelo de Alarcón (Madrid)
> >     >
> >     >
> >     >     "The urge to save humanity is almost always a false front
> >     >     for the urge to rule it"
> >     >
> >     >                             -- H. L. Mencken
> >     >
> >     >
> >     --
> >     Dr. Mark D. Wilkinson
> >     BBVA-UPM Industry Chair on Biotechnology
> >     Isaac Peral Distinguished Researcher
> >     Centro de Biotecnología y Genómica de Plantas UPM-INIA (CBGP)
> >     Campus Montegancedo,
> >     Autopista M-40 (Km 38)
> >     28223-Pozuelo de Alarcón (Madrid)
> >
> >
> >     "The urge to save humanity is almost always a false front
> >     for the urge to rule it"
> >
> >                             -- H. L. Mencken
> >
> --
> Dr. Mark D. Wilkinson
> BBVA-UPM Industry Chair on Biotechnology
> Isaac Peral Distinguished Researcher
> Centro de Biotecnología y Genómica de Plantas UPM-INIA (CBGP)
> Campus Montegancedo,
> Autopista M-40 (Km 38)
> 28223-Pozuelo de Alarcón (Madrid)
>
>
> "The urge to save humanity is almost always a false front
> for the urge to rule it"
>
>                         -- H. L. Mencken
>
>
>
Received on Thursday, 11 April 2019 09:42:01 UTC

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