System unstable when HTTP response returned before request fully written
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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
Priority: Critical
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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