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https://issues.apache.org/jira/browse/JENA-220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13227025#comment-13227025
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Tobias Trapp commented on JENA-220:
-----------------------------------

Thanks for your answer. Unfortunately this is not a solution: Of course JVM and 
so Fuseki can deal with proxies but the problem is that the W3C distiller gets 
the URL of the page to be distilled and calls back and exactly this call is 
blocked by the firewall.

So they are only two choices: the distiller should be part of Fuseki ( perhaps 
using http://www.jython.org/ ) or use in a way that there's no callback.

At the moment the general purpose SPARQL query on RDFa is not usable from 
behind a firewall and since RDFa get's more important I consider that as a 
major improvement.
                
> General purpose SPARQL query engine uses W3C is uses online RDFa Distiller - 
> so not usable behind a firewall
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: JENA-220
>                 URL: https://issues.apache.org/jira/browse/JENA-220
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: Fuseki
>    Affects Versions: Fuseki 0.2.1
>         Environment: I runnung Fuseki version 0.2.1-incubating-SNAPSHOT 
> (Build date: 2012-03-03T05:07:05+0000) under Windows 7 Professional: java 
> -jar fuseki-server.jar --mem /dataset 
>            Reporter: Tobias Trapp
>            Priority: Minor
>             Fix For: Fuseki 0.2.1
>
>
> When I'm using http://localhost:3030/sparql in Fuseki - I get an wrong 
> results when working behind a firewall. The reason is simple: RDFa is 
> distilled using the W3C service http://www.w3.org/2007/08/pyRdfa/ which you 
> can see in the console or when HTTP sniffing. So the sofwtare is not usable 
> in an intranet solution or behind firewalls. Is it possible to use another 
> distiller, perhaps http://dev.w3.org/2004/PythonLib-IH/dist/pyRdfa.tar.gz 
> using Jython?

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