See https://github.com/eclipse/jetty.project/issues/458 and
https://github.com/eclipse/jetty.project/issues/459

On 29 March 2016 at 09:43, Greg Wilkins <[email protected]> wrote:

>
> Bob,
>
> Currently jetty doesn't have any particular support for content
> negotiation.
>
> However, this could potentially be done as a RewriteHandler rule, which
> would be pretty simple in some respects as such a handler would have access
> to the code that already exists in Jetty to evaluate quality based header
> values to give an iteration of acceptable content types.       However, if
> the RewriteHandler is installed before a context, then it would not be able
> to easily ask if a resource exists or not (which may not be able to be
> asked if the resource is dynamic).
>
> You could also do it as a Servlet Filter, which would have access to the
> context resource base, but would have to copy the code to evaluate the
> quality values.
>
> While we have never really had any demand for Content-Negotiation, if
> somebody was to contribute either a Rule or a Filter, then we be happy to
> include it in future releases.  Also very happy to answer questions if you
> want to have a shot at writing such a rule and/or filter.
>
> This is the quality list method.... which is actually ancient code using
> Enumeration (because of Servlet spec).... hmmm really should be updated and
> moved to HttpField class....  I'll do that in the next week or so.
>
> cheers
>
>
>
>
>
>
>
>
>
>
> On 29 March 2016 at 07:04, Bob Morris <[email protected]> wrote:
>
>> Short: Seeking complete example of Content Negotiation configuration in
>> Jetty 9.3
>>
>> Long:
>> In a jetty 9.3.6 static installation I'm trying to support Content
>> Negotiation as required by the Linking Open Data project and dbpedia.
>>
>> To ${jetty.home}/etc/jetty-rewrite.xml we already have added some
>> correctly functioning regex rewrites in a rule of class RewritePatternRule.
>> These probably could be used in a HeaderPatternRule if I am correct that
>> this is the right place to do it. I am looking for examples of doing it
>> this way, because I don't really follow what <Set>...</Set> elements there
>> should be in the children of the class declaration. I can't see that
>> HeaderPatternRule supports the forwarded return, or if that belongs there
>> at this point at all.  An example would be welcome of some <Call>
>> elements that supply returns, whether they go in the same <handler>, how
>> they are related to the HeaderPatternRule, etc.
>>
>> At a minimum, I'd want something like
>>    curl -L -H "" http://mydataserver.edu/id/theID
>> to return the rdf that we already know how to generate and fetch by
>> rewriting the URI simply as
>> http://mydataserver.edu/id/theID.rdf and requesting that.
>>
>> Maybe I am confusing unrelated components of the Content Negotiation
>> ecosystem, in which case I am clueless about what is required. Nice would
>> be a complete functioning example.
>>
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>
>
>
> --
> Greg Wilkins <[email protected]> CTO http://webtide.com
>



-- 
Greg Wilkins <[email protected]> CTO http://webtide.com
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