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https://issues.apache.org/jira/browse/JENA-510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13738418#comment-13738418
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Rob Vesse commented on JENA-510:
--------------------------------
The largest q value should not automatically win, see the HTTP 1.1
specification (http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1):
bq. Media ranges can be overridden by more specific media ranges or specific
media types. If more than one media range applies to a given type, the most
specific reference has precedence
>From the examples given it does seem like the conneg may be sometimes
>incorrect because some of your examples appear to show the code ignoring this
>rule.
> Incorrect content negotiation with */* in Accept header
> -------------------------------------------------------
>
> Key: JENA-510
> URL: https://issues.apache.org/jira/browse/JENA-510
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ, Fuseki, TDB
> Affects Versions: Jena 2.10.2
> Reporter: Sarven Capadisli
>
> If I'm not mistaken, when */* content type is used in Accept header, content
> negotiation is incorrect. For curl -X GET
> http://sparql.org/books/sparql?query=SELECT+*+WHERE+%7B+%3Fs+%3Fp+%3Fo+%7D+LIMIT+1
> compare:
> {noformat}
> application/sparql-results+json =>
> application/sparql-results+json
> application/sparql-results+json;q=0.1 =>
> application/sparql-results+json
> */* =>
> application/sparql-results+json
> */*;q=0.1 =>
> application/sparql-results+json
> application/sparql-results+json;q=0.1, */*;q=0.9 =>
> application/sparql-results+json
> application/sparql-results+json;q=0.9, */*;q=0.1 => text/csv
> application/sparql-results+json;q=0.9, */*;q=0.9 => text/csv
> {noformat}
> It appears to be that, if the q-value of these two content-types are
> compared, the output content-type is incorrect.
> Here is an awkward one:
> {noformat}
> application/sparql-results+xml;q=0.1, */*;q=0.9 =>
> application/sparql-results+json
> application/sparql-results+xml;q=0.9, */*;q=0.1 =>
> application/sparql-results+json
> application/sparql-results+xml;q=0.9, */*;q=0.9 =>
> application/sparql-results+json
> {noformat}
> What's going on now?
> Just for completeness:
> {noformat}
> application/sparql-results+xml;q=0.1, application/sparql-results+json;q=0.9
> => application/sparql-results+json
> application/sparql-results+xml;q=0.9, application/sparql-results+json;q=0.1
> => application/sparql-results+xml
> application/sparql-results+xml;q=0.9, application/sparql-results+json;q=0.9
> => application/sparql-results+json
> {noformat}
> That looks okay.
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