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https://issues.apache.org/jira/browse/SYNAPSE-341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602276#action_12602276
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Jake Lambert commented on SYNAPSE-341:
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No: see attached file for proxy service's client-side request and response.
> System unstable when HTTP response returned before request fully written
> ------------------------------------------------------------------------
>
> Key: SYNAPSE-341
> URL: https://issues.apache.org/jira/browse/SYNAPSE-341
> Project: Synapse
> Issue Type: Bug
> Components: Transports
> Affects Versions: 1.2-beta1
> Environment: All environments
> Reporter: Jake Lambert
> Assignee: Asankha C. Perera
> Priority: Critical
> Fix For: 1.3
>
> Attachments: ClientSideReqResp.txt
>
>
> When using a proxy service and HTTP-NIO the following error is repeatedly
> generated when a remote WS returns its response before the request is fully
> written (i.e. when AXIOM is being used by the target service to parse the
> request XML and the request includes unprocessed attachment(s) or a fault
> occurs before fully reading the request):
> I/O dispatcher 12: System may be unstable: IOReactor encountered a runtime
> exception : null
> java.lang.NullPointerException
> at
> org.apache.synapse.transport.nhttp.ClientHandler.outputReady(ClientHandler.java:353)
> at
> org.apache.http.impl.nio.DefaultNHttpClientConnection.produceOutput(DefaultNHttpClientConnection.java:170)
> at
> org.apache.http.impl.nio.DefaultClientIOEventDispatch.outputReady(DefaultClientIOEventDispatch.java:105)
> at
> org.apache.http.impl.nio.reactor.BaseIOReactor.writable(BaseIOReactor.java:114)
> at
> org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:198)
> at
> org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:180)
> at
> org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:142)
> at
> org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:70)
> at
> org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:318)
> at java.lang.Thread.run(Unknown Source)
> The actual cause is the ConnectionPool 'cleanConnectionReferences()' method,
> which clears the REQUEST_SOURCE_BUFFER upon completion of the response HTTP
> decoding, rather than on completion of both the request AND response
> processing.
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