### Author:  [@s5uybw](https://community.stardog.com/u/s5uybw)
#### Post date: [November 27, 2019, 6:31pm UTC](https://community.stardog.com/t/federated-query/2121/1 "2019-11-27T18:31:54Z")
Hello,
I am trying to run the following federated queries to access lei.info via stardog studio
```
PREFIX voc: {
GRAPH ?g {
?s a voc:LegalEntity .
}
}
}
LIMIT 100
```
Got errors:
```
{
"message": "Network is unreachable (connect failed)"
"code": "QueryEval"
}
```
However, I am able to connect using Python Sparql-client and retrieve data in the same machine.
Stardog is running behind a proxy. We have setup using -Dhttp.proxyHost -Dhttp.proxyPort. We are able to connect dbpedia via stardog studio.
Stardog server:7.0.1
---
### Author:  [@zachary.whitley](https://community.stardog.com/u/zachary.whitley)
#### Post date: [November 27, 2019, 7:12pm UTC](https://community.stardog.com/t/federated-query/2121/2 "2019-11-27T19:12:17Z")
Is there any additional information in stardog.log?
---
### Author:  [@s5uybw](https://community.stardog.com/u/s5uybw)
#### Post date: [November 27, 2019, 8:58pm UTC](https://community.stardog.com/t/federated-query/2121/3 "2019-11-27T20:58:08Z")
here is extraction from the log:
ERROR 2019-11-27 15:59:56,790 [stardog-user-1] com.complexible.stardog.protocols.http.server.StardogHttpServiceLoader:accept(231): An unexpected exception was handled by the server
com.stardog.stark.query.QueryExecutionFailure: Network is unreachable (connect failed)
at com.complexible.common.rdf.query.IteratorAsTupleQueryResult.hasNext(IteratorAsTupleQueryResult.java:82) ~[stardog-utils-rdf-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.TransactionManagedQueryResult.hasNext(TransactionManagedQueryResult.java:61) ~[stardog-7.0.1.jar:?]
at com.stardog.stark.query.ClosingSpliterator.forEachRemaining(ClosingSpliterator.java:37) ~[stardog-stark-query-api-7.0.1.jar:?]
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:647) ~[?:1.8.0\_222]
at com.stardog.stark.query.io.QueryResultWriters.write(QueryResultWriters.java:142) ~[stardog-stark-query-io-7.0.1.jar:?]
at com.stardog.stark.query.io.QueryResultWriters.write(QueryResultWriters.java:127) ~[stardog-stark-query-io-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.ProtocolUtils.writeTupleResponse(ProtocolUtils.java:570) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.ProtocolUtils.executeReadQuery(ProtocolUtils.java:480) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.ProtocolUtils.executeReadQuery(ProtocolUtils.java:464) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.SPARQLProtocol.executeQuery(SPARQLProtocol.java:127) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.SPARQLProtocol.post(SPARQLProtocol.java:92) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.stardog.http.server.undertow.jaxrs.ExtractRoutes.lambda$handleIt$5(ExtractRoutes.java:192) ~[stardog-protocols-http-server-7.0.1.jar:?]
at org.apache.shiro.subject.support.SubjectRunnable.doRun(SubjectRunnable.java:120) [shiro-core-1.3.0.jar:1.3.0]
at org.apache.shiro.subject.support.SubjectRunnable.run(SubjectRunnable.java:108) [shiro-core-1.3.0.jar:1.3.0]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0\_222]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0\_222]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0\_222]
Caused by: com.complexible.stardog.plan.eval.operator.OperatorException: Network is unreachable (connect failed)
at com.complexible.stardog.plan.eval.service.SPARQLService$SparqlServiceQuery.evaluateBatch(SPARQLService.java:138) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.service.BatchingJoinArgServiceQuery.evaluate(BatchingJoinArgServiceQuery.java:59) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.ServiceOperatorImpl.computeNext(ServiceOperatorImpl.java:82) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.ServiceOperatorImpl.computeNext(ServiceOperatorImpl.java:33) ~[stardog-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.SingleProjectionOp.computeNext(SingleProjectionOp.java:82) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.SingleProjectionOp.computeNext(SingleProjectionOp.java:29) ~[stardog-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.util.AutoCloseOperator.computeNext(AutoCloseOperator.java:114) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.util.AutoCloseOperator.computeNext(AutoCloseOperator.java:26) ~[stardog-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.util.OpBasedBindingSetIteration.computeNext(OpBasedBindingSetIteration.java:119) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.util.OpBasedBindingSetIteration.computeNext(OpBasedBindingSetIteration.java:40) ~[stardog-7.0.1.jar:?]
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:141) ~[guava-26.0-jre.jar:?]
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:136) ~[guava-26.0-jre.jar:?]
at com.complexible.common.rdf.query.IteratorAsTupleQueryResult.hasNext(IteratorAsTupleQueryResult.java:78) ~[stardog-utils-rdf-7.0.1.jar:?]
... 16 more
---
### Author:  [@jess](https://community.stardog.com/u/jess)
#### Post date: [November 27, 2019, 9:00pm UTC](https://community.stardog.com/t/federated-query/2121/4 "2019-11-27T21:00:29Z")
Please use the HTTPS proxy settings as described in section 2.2 of [Java Networking and Proxies](https://docs.oracle.com/javase/8/docs/technotes/guides/net/proxies.html).
---
### Author:  [@s5uybw](https://community.stardog.com/u/s5uybw)
#### Post date: [November 27, 2019, 10:18pm UTC](https://community.stardog.com/t/federated-query/2121/5 "2019-11-27T22:18:13Z")
Hi Jess, i do have proxy setting for STARDOG\_JAVA\_ARGS
-Dhttp.proxyHost=xxxx -Dhttp.proxyPort=xxxx
---
### Author:  [@zachary.whitley](https://community.stardog.com/u/zachary.whitley)
#### Post date: [November 27, 2019, 11:14pm UTC](https://community.stardog.com/t/federated-query/2121/6 "2019-11-27T23:14:10Z")
The endpoint us using http **s**
---
### Author:  [@s5uybw](https://community.stardog.com/u/s5uybw)
#### Post date: [November 28, 2019, 12:09am UTC](https://community.stardog.com/t/federated-query/2121/7 "2019-11-28T00:09:19Z")
thanks!
I did not notice that there is Dhttps.proxyHost setting. it works now.
---
### Author:  [@system](https://community.stardog.com/u/system)
#### Post date: [December 12, 2019, 12:09am UTC](https://community.stardog.com/t/federated-query/2121/8 "2019-12-12T00:09:26Z")
This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.