Hi Guys, Any thoughts on this?
Cheers Jem -----Original Message----- From: Patrick van Kleef [mailto:vos.ad...@openlinksw.com] Sent: Tue 17/02/2009 13:35 To: Jem Rayfield Cc: Kingsley Idehen; virtuoso-users@lists.sourceforge.net Subject: Re: [Virtuoso-users] HTTP proxy Hi Jem, > Following on from this I am having a similar problem trying to use the > Jena Provider and HTTP connections via a proxy. > This time I am explictly setting proxy params using JVM -D flags: > > VM params -> -Dhttp.proxyHost=www-cache.xxx.bbc.co.uk > -Dhttp.proxyPort=80 > > I receive errors as follows: > > Begin read from 'http://www.w3.org/People/Berners-Lee/card#i' > Exception > in thread "main" virtuoso.jdbc3.VirtuosoException: HC001: Connection > Error in HTTP Client > at virtuoso.jdbc3.VirtuosoResultSet.process_result(Unknown > Source) > at virtuoso.jdbc3.VirtuosoResultSet.<init>(Unknown Source) > at virtuoso.jdbc3.VirtuosoStatement.sendQuery(Unknown Source) > at virtuoso.jdbc3.VirtuosoStatement.execute(Unknown Source) > at virtuoso.jena.driver.VirtGraph.read(Unknown Source) > at CreateAndQueryGraph.main(CreateAndQueryGraph.java:28) > com.hp.hpl.jena.shared.JenaException: rethrew: > virtuoso.jdbc3.VirtuosoException: HC001: Connection Error in HTTP > Client > at virtuoso.jena.driver.VirtGraph.read(Unknown Source) > at CreateAndQueryGraph.main(CreateAndQueryGraph.java:28) > Caused by: virtuoso.jdbc3.VirtuosoException: HC001: Connection Error > in > HTTP Client > at virtuoso.jdbc3.VirtuosoResultSet.process_result(Unknown > Source) > at virtuoso.jdbc3.VirtuosoResultSet.<init>(Unknown Source) > at virtuoso.jdbc3.VirtuosoStatement.sendQuery(Unknown Source) > at virtuoso.jdbc3.VirtuosoStatement.execute(Unknown Source) > ... 2 more > > Is there another -D flag I should be using? Or as I expect is this > again > related to proxy configuration for the Virtuoso server? > I suspect functions such as http_client etc are being utilised under > the > hood? > > FYI: The JAVA code used is below (example Jena code). > > It should be noted that my web browser works with the contained urls > and > is configured to go via a proxy. > > This is beginning to slow down my evaluation as all http access must > go > through this proxy. > The same would be true in a test/prod environment. > I would expect this to be done in the virtuoso server. I am currently discussing the various options with the Virtuoso development team. Will let you know the moment i know more about this. Patrick
