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Re: [dotNetRDF-bugs] ERROR: The requested URL could not be retrieved SPARQL Update SesameHttpProtocolConnector
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From: Rob V. <rv...@do...> - 2013-11-19 11:07:27
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Stefan >From the error messages you have shown this appears to be caused by the network configuration of your environment and network. Why queries should work and updates not is unclear to me, it would be helpful if you could provide HTTP traces as described in the User Guide - https://bitbucket.org/dotnetrdf/dotnetrdf/wiki/HowTo/Debug%20HTTP%20Communic ation.wiki – as without these there isn't anything for us to investigate Thanks, Rob p.s. This is a subscription based list, I have moderated your email through but please subscribe via https://lists.sourceforge.net/lists/listinfo/dotnetrdf-bugs to ensure you see any further responses. From: Stefan Scheglmann <sc...@un...> Reply-To: dotNetRDF Bug Report tracking and resolution <dot...@li...> Date: Tuesday, 19 November 2013 10:31 To: <dot...@li...> Subject: [dotNetRDF-bugs] ERROR: The requested URL could not be retrieved SPARQL Update SesameHttpProtocolConnector > Hi, > > currently i am playing around with dotnetrdf from within Fsharp, using a > sesame store as backend. > First, i initialized the connection to the server as follows: > let sescon = > SesameHttpProtocolConnector(„192.168.0.1:8080/openrdf-sesame","test") > The domain was not set in the resolve.conf file of the server. > For querying this works fine, but as soon as i try to use a SPARQL Update > like: > sescon.Update("INSERT DATA {<http://example.org/ns#jim> > <http://www.w3.org/1999/02/22-rdf-syntax-ns#Type> > <http://example.org/ns#person>}“) > i always get an the following RDFStorageException . > > A HTTP error occured while updating the Store. Store returned the following > error message: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" > "http://www.w3.org/TR/html4/loose.dtd"> > <HTML><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; > charset=iso-8859-1"> > <TITLE>ERROR: The requested URL could not be retrieved</TITLE> > <STYLE > type="text/css"><!--BODY{background-color:#ffffff;font-family:verdana,sans-ser > if}PRE{font-family:sans-serif}--></STYLE> > </HEAD><BODY> > <H1>ERROR</H1> > <H2>The requested URL could not be retrieved</H2> > <HR noshade size="1px"> > <P> > While trying to process the request: > <PRE> > POST /openrdf-sesame/repositories/test/statements HTTP/1.1 > Accept: */* > Content-Type: application/x-www-form-urlencoded > Host: 141.26.24.134:8080 > Content-Length: 52 > Expect: 100-continue > Proxy-Connection: Keep-Alive > </PRE> > <P> > The following error was encountered: > <UL><LI><STRONG> > Invalid Request > </STRONG></UL><P> > Some aspect of the HTTP Request is invalid. Possible problems: > <UL> > <LI>Missing or unknown request method > <LI>Missing URL > <LI>Missing HTTP Identifier (HTTP/1.0) > <LI>Request is too large > <LI>Content-Length missing for POST or PUT requests > <LI>Illegal character in hostname; underscores are not allowed > </UL> > <P>Your cache administrator is <A > HREF="mailto:ad...@un...">ad...@un...</A>. > <BR clear="all"> > <HR noshade size="1px"> > <ADDRESS> > Generated Tue, 19 Nov 2013 09:06:01 GMT by cache (squid/2.7.STABLE5) > </ADDRESS> > </BODY></HTML> > After looking into the sesame-logs and some trial and error, i came up with > the following solution. > Luckily i could easily get a domain name for my server, setting the domain in > the resolve.conf and instantiating the connection using the domain-name then > works. > SesameHttpProtocolConnector("http://sesame.example.org:8080/openrdf-sesame","t > est“) > But this might cause problems if you are not able to get a proper domain name > and do not want to run your own DNS. > Maybe someone should look into this. > > Greets > Stefan > > > -- > Stefan Scheglmann > WeST Research Group > University of Koblenz-Landau > Universitaetsstrasse 1 > D-56070 Koblenz > Tel.: + 49 261 287 2718 > Fax: + 49 261 287 100 2718 > sc...@un... > http://west.uni-koblenz.de <http://west.uni-koblenz.de/> > > ------------------------------------------------------------------------------ > Shape the Mobile Experience: Free Subscription Software experts and > developers: Be at the forefront of tech innovation. Intel(R) Software > Adrenaline delivers strategic insight and game-changing conversations that > shape the rapidly evolving mobile landscape. Sign up now. > http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk___ > ____________________________________________ dotNetRDF-bugs mailing list > dot...@li... > https://lists.sourceforge.net/lists/listinfo/dotnetrdf-bugs |
