On 12/21/16 7:25 AM, Nikolaos Beredimas wrote: > I am trying to POST a SPARQL query using the "query via POST directly" > method described in SPARQL 1.1 Protocol ( paragraph 2.1.3) > (https://www.w3.org/TR/2013/REC-sparql11-protocol-20130321/#query-via-post-direct) > > However I am confused if Virtuoso actually does support this method > I have managed to work both with GET and URL-encoded POST (at the same > /sparql path) > but when trying the direct POST method I get a 409 Invalid Path > > > curl -i -X POST -H "Content-Type: application/sparql-query" -d > 'SELECT * WHERE { ?s ?p ?o . }' "http://localhost:8890/sparql"; > > HTTP/1.1 409 Invalid path > Server: Virtuoso/07.20.3215 (Win64) x86_64-generic-win-64 > Connection: Keep-Alive > Content-Type: text/html; charset=UTF-8 > Date: Wed, 21 Dec 2016 12:09:51 GMT > Accept-Ranges: bytes > Content-Length: 0 > > Just to make sure it's not a problem on the request side, I launched a > Jena Fuseki instance just for testing, and it appears to work correctly: > curl -i -X POST -H "Content-Type: application/sparql-query" -d > 'SELECT * WHERE { ?s ?p ?o . }' "http://localhost:3333/mytest/sparql"; > HTTP/1.1 200 OK > Date: Wed, 21 Dec 2016 12:14:47 GMT > Fuseki-Request-ID: 2 > Cache-Control: must-revalidate,no-cache,no-store > Pragma: no-cache > Content-Type: application/sparql-results+json; charset=utf-8 > Transfer-Encoding: chunked > > { > "head": { > "vars": [ "s" , "p" , "o" ] > } , > "results": { > "bindings": [ > > ] > } > } > > > > > I have tried using Virtuoso VOS 7.20.3215 & 7.20.3217 > > Now, there have been a couple of threads in the past referencing the > same issue, but unfortunately it was never resolved. > > So is it me doing something wrong, is it a bug, or does Virtuoso not > support this method? > Because the " 409 Invalid Path" doesn't make any sense to me. > Note that if I ommit the Content-Type: application/sparql-query header > I simply get back the SPARQL HTML page, so clearly there is something > going wrong but the error message is either wrong or cryptic
Reproduced using:
curl -i -X POST -H "Content-Type: application/sparql-query" -d 'SELECT *
WHERE { ?s a ?o . } limit 5' "http://dbpedia.org/sparql/";
HTTP/1.1 409 Invalid path
Date: Wed, 21 Dec 2016 14:01:15 GMT
Content-Type: text/html; charset=UTF-8
Content-Length: 0
Connection: keep-alive
Server: Virtuoso/07.20.3217 (Linux) i686-generic-linux-glibc212-64 VDB
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true
Access-Control-Allow-Methods: GET, POST, OPTIONS
Access-Control-Allow-Headers:
DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Accept-Encoding
That's a bug. Basically, functionality has regressed. It will be looked
into, quickly.
--
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