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Posted to dev@synapse.apache.org by "Charitha Kankanamge (JIRA)" <ji...@apache.org> on 2008/04/23 08:29:21 UTC

[jira] Created: (SYNAPSE-275) Aggregate mediator: Exception thrown when aggregating messages with specifying a complete condition

Aggregate mediator: Exception thrown when aggregating messages with specifying a complete condition 
----------------------------------------------------------------------------------------------------

                 Key: SYNAPSE-275
                 URL: https://issues.apache.org/jira/browse/SYNAPSE-275
             Project: Synapse
          Issue Type: Bug
          Components: Core
    Affects Versions: NIGHTLY
         Environment: ubuntu, jdk15
            Reporter: Charitha Kankanamge


Following exception can be seen in the synapse console when aggregating messages if <completeCondition><messageCount max=""> element is specified in the configuration.

2008-04-23 12:52:09,467 [127.0.0.1-testb] [HttpClientWorker-8] ERROR ServerHandler Unexpected HTTP protocol error : Transfer-encoding header already present
org.apache.http.ProtocolException: Transfer-encoding header already present
        at org.apache.http.protocol.ResponseContent.process(ResponseContent.java:67)
        at org.apache.http.protocol.BasicHttpProcessor.process(BasicHttpProcessor.java:304)
        at org.apache.synapse.transport.nhttp.ServerHandler.commitResponse(ServerHandler.java:232)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:411)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.invoke(HttpCoreNIOSender.java:264)
        at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
        at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:138)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:221)
        at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:158)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
        at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.completeAggregate(AggregateMediator.java:273)
        at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.mediate(AggregateMediator.java:217)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:164)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:299)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:130)
        at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
        at org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:206)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)
2008-04-23 12:52:09,496 [127.0.0.1-testb] [HttpClientWorker-8] ERROR HttpCoreNIOSender IO Error sending response message
org.apache.axis2.AxisFault
        at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
        at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:72)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:421)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.invoke(HttpCoreNIOSender.java:264)
        at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
        at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:138)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:221)
        at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:158)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
        at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.completeAggregate(AggregateMediator.java:273)
        at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.mediate(AggregateMediator.java:217)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:164)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:299)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:130)
        at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
        at org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:206)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)
Caused by: com.ctc.wstx.exc.WstxIOException: null
        at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:313)
        at org.apache.axiom.om.impl.MTOMXMLStreamWriter.flush(MTOMXMLStreamWriter.java:146)
        at org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:451)
        at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:66)
        ... 20 more
Caused by: java.nio.channels.ClosedChannelException
        at sun.nio.ch.SinkChannelImpl.ensureOpen(SinkChannelImpl.java:136)
        at sun.nio.ch.SinkChannelImpl.write(SinkChannelImpl.java:140)
        at java.nio.channels.Channels.write(Channels.java:60)
        at java.nio.channels.Channels.access$000(Channels.java:47)
        at java.nio.channels.Channels$1.write(Channels.java:134)
        at com.ctc.wstx.io.UTF8Writer.flush(UTF8Writer.java:96)
        at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:214)
        at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:311)
        ... 23 more
2008-04-23 12:52:09,498 [127.0.0.1-testb] [HttpClientWorker-8] ERROR Axis2Sender Unexpected error sending message back
org.apache.axis2.AxisFault: IO Error sending response message
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.handleException(HttpCoreNIOSender.java:545)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:425)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.invoke(HttpCoreNIOSender.java:264)
        at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
        at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:138)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:221)
        at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:158)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
        at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.completeAggregate(AggregateMediator.java:273)
        at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.mediate(AggregateMediator.java:217)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:164)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:299)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:130)
        at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
        at org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:206)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)
Caused by: org.apache.axis2.AxisFault
        at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
        at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:72)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:421)
        ... 19 more
Caused by: com.ctc.wstx.exc.WstxIOException: null
        at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:313)
        at org.apache.axiom.om.impl.MTOMXMLStreamWriter.flush(MTOMXMLStreamWriter.java:146)
        at org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:451)
        at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:66)
        ... 20 more
Caused by: java.nio.channels.ClosedChannelException
        at sun.nio.ch.SinkChannelImpl.ensureOpen(SinkChannelImpl.java:136)
        at sun.nio.ch.SinkChannelImpl.write(SinkChannelImpl.java:140)
        at java.nio.channels.Channels.write(Channels.java:60)
        at java.nio.channels.Channels.access$000(Channels.java:47)
        at java.nio.channels.Channels$1.write(Channels.java:134)
        at com.ctc.wstx.io.UTF8Writer.flush(UTF8Writer.java:96)
        at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:214)
        at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:311)
        ... 23 more
2008-04-23 12:52:09,516 [127.0.0.1-testb] [HttpClientWorker-8]  WARN FaultHandler Fault handler - setting ERROR_MESSAGE : Unexpected error sending message back
2008-04-23 12:52:09,516 [127.0.0.1-testb] [HttpClientWorker-8]  WARN FaultHandler Fault handler - setting ERROR_DETAIL : org.apache.synapse.SynapseException: Unexpected error sending message back
        at org.apache.synapse.core.axis2.Axis2Sender.handleException(Axis2Sender.java:147)
        at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:141)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:221)
        at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:158)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
        at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.completeAggregate(AggregateMediator.java:273)
        at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.mediate(AggregateMediator.java:217)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:164)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:299)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:130)
        at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
        at org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:206)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)
Caused by: org.apache.axis2.AxisFault: IO Error sending response message
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.handleException(HttpCoreNIOSender.java:545)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:425)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.invoke(HttpCoreNIOSender.java:264)
        at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
        at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:138)
        ... 16 more
Caused by: org.apache.axis2.AxisFault
        at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
        at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:72)
        at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:421)
        ... 19 more
Caused by: com.ctc.wstx.exc.WstxIOException: null
        at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:313)
        at org.apache.axiom.om.impl.MTOMXMLStreamWriter.flush(MTOMXMLStreamWriter.java:146)
        at org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:451)
        at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:66)
        ... 20 more
Caused by: java.nio.channels.ClosedChannelException
        at sun.nio.ch.SinkChannelImpl.ensureOpen(SinkChannelImpl.java:136)
        at sun.nio.ch.SinkChannelImpl.write(SinkChannelImpl.java:140)
        at java.nio.channels.Channels.write(Channels.java:60)
        at java.nio.channels.Channels.access$000(Channels.java:47)
        at java.nio.channels.Channels$1.write(Channels.java:134)
        at com.ctc.wstx.io.UTF8Writer.flush(UTF8Writer.java:96)
        at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:214)
        at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:311)
        ... 23 more

Steps to reproduce:
=================
1. Edit the sample 400 configuration as given below by adding a completeCondition element.

<definitions xmlns="http://ws.apache.org/ns/synapse">

    <proxy name="SplitAggregateProxy">
        <target>
            <inSequence>
                <iterate expression="//m0:getQuote/m0:request" preservePayload="true"
                         attachPath="//m0:getQuote"
                         xmlns:m0="http://services.samples/xsd">
                    <target>
                        <sequence>
                            <send>
                                <endpoint>
                                    <address
                                        uri="http://localhost:9000/soap/SimpleStockQuoteService"/>
                                </endpoint>
                            </send>
                        </sequence>
                    </target>
                </iterate>
            </inSequence>
            <outSequence>
                <aggregate>
           <completeCondition>
          <messageCount  max="3"/>
           </completeCondition>?
                    <onComplete expression="//m0:getQuoteResponse"
                                xmlns:m0="http://services.samples/xsd">
                        <send/>
                    </onComplete>
                    <invalidate>
                        <log level="full"/>
                        <drop/>
                    </invalidate>
                </aggregate>
            </outSequence>
        </target>
    </proxy>
</definitions>

2. save the configuration and start synapse (synapse -sample 400)
3. Start axis2Server
4. Invoke StockQuoteClient as follows.
ant stockquote -Daddurl=http://localhost:8080/soap/SplitAggregateProxy -Ditr=4
5. Run the client again (You will not get the above exception in the first time)




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[jira] Commented: (SYNAPSE-275) Aggregate mediator: Exception thrown when aggregating messages with specifying a complete condition

Posted by "Evanthika Amarasiri (JIRA)" <ji...@apache.org>.

    [ https://issues.apache.org/jira/browse/SYNAPSE-275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12596279#action_12596279 ] 

Evanthika Amarasiri commented on SYNAPSE-275:
---------------------------------------------

This issue is still not fixed. Sometimes it executes successfully but sometimes you will get this exception. Tested on 1.2_SNAPSHOT. Please re-open the issue. 

> Aggregate mediator: Exception thrown when aggregating messages with specifying a complete condition 
> ----------------------------------------------------------------------------------------------------
>
>                 Key: SYNAPSE-275
>                 URL: https://issues.apache.org/jira/browse/SYNAPSE-275
>             Project: Synapse
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: NIGHTLY
>         Environment: ubuntu, jdk15
>            Reporter: Charitha Kankanamge
>            Assignee: Ruwan Linton
>             Fix For: 1.2
>
>
> Following exception can be seen in the synapse console when aggregating messages if <completeCondition><messageCount max=""> element is specified in the configuration.
> 2008-04-23 12:52:09,467 [127.0.0.1-testb] [HttpClientWorker-8] ERROR ServerHandler Unexpected HTTP protocol error : Transfer-encoding header already present
> org.apache.http.ProtocolException: Transfer-encoding header already present
>         at org.apache.http.protocol.ResponseContent.process(ResponseContent.java:67)
>         at org.apache.http.protocol.BasicHttpProcessor.process(BasicHttpProcessor.java:304)
>         at org.apache.synapse.transport.nhttp.ServerHandler.commitResponse(ServerHandler.java:232)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:411)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.invoke(HttpCoreNIOSender.java:264)
>         at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
>         at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:138)
>         at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:221)
>         at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:158)
>         at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
>         at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
>         at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.completeAggregate(AggregateMediator.java:273)
>         at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.mediate(AggregateMediator.java:217)
>         at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
>         at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
>         at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:164)
>         at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:299)
>         at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:130)
>         at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
>         at org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:206)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>         at java.lang.Thread.run(Thread.java:595)
> 2008-04-23 12:52:09,496 [127.0.0.1-testb] [HttpClientWorker-8] ERROR HttpCoreNIOSender IO Error sending response message
> org.apache.axis2.AxisFault
>         at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
>         at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:72)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:421)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.invoke(HttpCoreNIOSender.java:264)
>         at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
>         at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:138)
>         at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:221)
>         at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:158)
>         at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
>         at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
>         at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.completeAggregate(AggregateMediator.java:273)
>         at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.mediate(AggregateMediator.java:217)
>         at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
>         at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
>         at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:164)
>         at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:299)
>         at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:130)
>         at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
>         at org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:206)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>         at java.lang.Thread.run(Thread.java:595)
> Caused by: com.ctc.wstx.exc.WstxIOException: null
>         at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:313)
>         at org.apache.axiom.om.impl.MTOMXMLStreamWriter.flush(MTOMXMLStreamWriter.java:146)
>         at org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:451)
>         at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:66)
>         ... 20 more
> Caused by: java.nio.channels.ClosedChannelException
>         at sun.nio.ch.SinkChannelImpl.ensureOpen(SinkChannelImpl.java:136)
>         at sun.nio.ch.SinkChannelImpl.write(SinkChannelImpl.java:140)
>         at java.nio.channels.Channels.write(Channels.java:60)
>         at java.nio.channels.Channels.access$000(Channels.java:47)
>         at java.nio.channels.Channels$1.write(Channels.java:134)
>         at com.ctc.wstx.io.UTF8Writer.flush(UTF8Writer.java:96)
>         at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:214)
>         at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:311)
>         ... 23 more
> 2008-04-23 12:52:09,498 [127.0.0.1-testb] [HttpClientWorker-8] ERROR Axis2Sender Unexpected error sending message back
> org.apache.axis2.AxisFault: IO Error sending response message
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.handleException(HttpCoreNIOSender.java:545)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:425)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.invoke(HttpCoreNIOSender.java:264)
>         at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
>         at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:138)
>         at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:221)
>         at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:158)
>         at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
>         at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
>         at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.completeAggregate(AggregateMediator.java:273)
>         at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.mediate(AggregateMediator.java:217)
>         at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
>         at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
>         at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:164)
>         at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:299)
>         at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:130)
>         at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
>         at org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:206)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>         at java.lang.Thread.run(Thread.java:595)
> Caused by: org.apache.axis2.AxisFault
>         at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
>         at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:72)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:421)
>         ... 19 more
> Caused by: com.ctc.wstx.exc.WstxIOException: null
>         at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:313)
>         at org.apache.axiom.om.impl.MTOMXMLStreamWriter.flush(MTOMXMLStreamWriter.java:146)
>         at org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:451)
>         at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:66)
>         ... 20 more
> Caused by: java.nio.channels.ClosedChannelException
>         at sun.nio.ch.SinkChannelImpl.ensureOpen(SinkChannelImpl.java:136)
>         at sun.nio.ch.SinkChannelImpl.write(SinkChannelImpl.java:140)
>         at java.nio.channels.Channels.write(Channels.java:60)
>         at java.nio.channels.Channels.access$000(Channels.java:47)
>         at java.nio.channels.Channels$1.write(Channels.java:134)
>         at com.ctc.wstx.io.UTF8Writer.flush(UTF8Writer.java:96)
>         at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:214)
>         at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:311)
>         ... 23 more
> 2008-04-23 12:52:09,516 [127.0.0.1-testb] [HttpClientWorker-8]  WARN FaultHandler Fault handler - setting ERROR_MESSAGE : Unexpected error sending message back
> 2008-04-23 12:52:09,516 [127.0.0.1-testb] [HttpClientWorker-8]  WARN FaultHandler Fault handler - setting ERROR_DETAIL : org.apache.synapse.SynapseException: Unexpected error sending message back
>         at org.apache.synapse.core.axis2.Axis2Sender.handleException(Axis2Sender.java:147)
>         at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:141)
>         at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:221)
>         at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:158)
>         at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
>         at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
>         at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.completeAggregate(AggregateMediator.java:273)
>         at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.mediate(AggregateMediator.java:217)
>         at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:58)
>         at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:125)
>         at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:164)
>         at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:299)
>         at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:130)
>         at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
>         at org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:206)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>         at java.lang.Thread.run(Thread.java:595)
> Caused by: org.apache.axis2.AxisFault: IO Error sending response message
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.handleException(HttpCoreNIOSender.java:545)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:425)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.invoke(HttpCoreNIOSender.java:264)
>         at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
>         at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:138)
>         ... 16 more
> Caused by: org.apache.axis2.AxisFault
>         at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
>         at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:72)
>         at org.apache.synapse.transport.nhttp.HttpCoreNIOSender.sendAsyncResponse(HttpCoreNIOSender.java:421)
>         ... 19 more
> Caused by: com.ctc.wstx.exc.WstxIOException: null
>         at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:313)
>         at org.apache.axiom.om.impl.MTOMXMLStreamWriter.flush(MTOMXMLStreamWriter.java:146)
>         at org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:451)
>         at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:66)
>         ... 20 more
> Caused by: java.nio.channels.ClosedChannelException
>         at sun.nio.ch.SinkChannelImpl.ensureOpen(SinkChannelImpl.java:136)
>         at sun.nio.ch.SinkChannelImpl.write(SinkChannelImpl.java:140)
>         at java.nio.channels.Channels.write(Channels.java:60)
>         at java.nio.channels.Channels.access$000(Channels.java:47)
>         at java.nio.channels.Channels$1.write(Channels.java:134)
>         at com.ctc.wstx.io.UTF8Writer.flush(UTF8Writer.java:96)
>         at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:214)
>         at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:311)
>         ... 23 more
> Steps to reproduce:
> =================
> 1. Edit the sample 400 configuration as given below by adding a completeCondition element.
> <definitions xmlns="http://ws.apache.org/ns/synapse">
>     <proxy name="SplitAggregateProxy">
>         <target>
>             <inSequence>
>                 <iterate expression="//m0:getQuote/m0:request" preservePayload="true"
>                          attachPath="//m0:getQuote"
>                          xmlns:m0="http://services.samples/xsd">
>                     <target>
>                         <sequence>
>                             <send>
>                                 <endpoint>
>                                     <address
>                                         uri="http://localhost:9000/soap/SimpleStockQuoteService"/>
>                                 </endpoint>
>                             </send>
>                         </sequence>
>                     </target>
>                 </iterate>
>             </inSequence>
>             <outSequence>
>                 <aggregate>
>            <completeCondition>
>           <messageCount  max="3"/>
>            </completeCondition>?
>                     <onComplete expression="//m0:getQuoteResponse"
>                                 xmlns:m0="http://services.samples/xsd">
>                         <send/>
>                     </onComplete>
>                     <invalidate>
>                         <log level="full"/>
>                         <drop/>
>                     </invalidate>
>                 </aggregate>
>             </outSequence>
>         </target>
>     </proxy>
> </definitions>
> 2. save the configuration and start synapse (synapse -sample 400)
> 3. Start axis2Server
> 4. Invoke StockQuoteClient as follows.
> ant stockquote -Daddurl=http://localhost:8080/soap/SplitAggregateProxy -Ditr=4
> 5. Run the client again (You will not get the above exception in the first time)

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