1 2 Previous Next 15 Replies Latest reply on Nov 2, 2007 5:50 PM by Burr Sutter

    how to develop web service from scratch?

    fabianw Newbie

      Hi

      I want to implement a business-process using some web services and jBPM.

      I'm still struggling to deploy my services. I use the Red Hat Developer Studio, which seems to have some web service support as there is a "Web Service" section in the preferences. I tried to start a new Dynamic Web Project, but I get an error that I have to configure Axis2 first. Is this integrated into JBoss AS? If yes, how do I configure it? - if no, how can I use it?

      Whatever... is there any sort of tutorial how to create a new web service (from scratch) and deploy it to JBoss ESB?

      Every help is appreciated.

        • 1. Re: how to develop web service from scratch?
          Kurt Stam Master

          1.At JBoss we have our own WS implementation call JBossWS (we don't use axis/axis2). The easiest way to bring up a webservice is to use annotations on a POJO or EJB3 bean. For info on that see:

          http://jbws.dyndns.org/mediawiki/index.php?title=JBossWS

          2. Depending on what you want to do with jBPM ai would suggest you check out some of the jBPM quickstarts where JBossESB - jBPM integration is demonstrated. This why you can build jBPM services that can be approached over any protocol on the bus.

          Hope this helps.

          --Kurt

          • 2. Re: how to develop web service from scratch?
            fabianw Newbie

            Oh yes, I completely forgot JBossWS. I was irritated about these Axis settings in RHDS.

            I know that I can use these annotations. I already created a litte POJO with annotations just like in the webservice_consumer1 quickstart. I just want to know how I can deploy this. Is it possible to deploy the service directly from inside of RHDS? And what else do I need for deployment? How can I generate the WSDL?

            I will take a look at the link you posted but every hint helps!

            And I'm not yet at the point of orchestration. First I have to get my services working, then I'm gonna think about jBPM :) (but i already took a look at the quickstarts)

            • 3. Re: how to develop web service from scratch?
              Kurt Stam Master

              Great :).

              I'm not sure about deployment from within RHDS. Maybe someone else can comment on that, but to you can see your WSDL simply by going to http://localhost:8080/jbossws/ and clicking on the service you want to see.

              --Kurt

              • 4. Re: how to develop web service from scratch?
                fabianw Newbie

                But my service only shows up on this page after I deployed it. So I still need to know how to deploy my service. Deployment from RHDS would be nice, but of course every other method is ok, too.

                • 5. Re: how to develop web service from scratch?
                  Kurt Stam Master

                  Oh and I forgot to mention one thing. We integrated jBPM "bidirectional", so you can have the jBPM flow direct the ESB process flow (orchestration), or you can drop messages on a plain jBPM workflow (including human processing) and if you want the ESB can be used to send jBPM notifications.

                  --Kurt

                  • 6. Re: how to develop web service from scratch?
                    fabianw Newbie

                    I'll come back to this topic after I got my services deployed :)

                    • 7. Re: how to develop web service from scratch?
                      fabianw Newbie

                      I still can't get it to work.

                      I tried two ways:
                      1) I copied the webservice_consumer1 directory and replaced war/src/ with my service-pojo and changed the web.xml.
                      If I try to run 'ant makewar -v' I get the following output:

                      Apache Ant version 1.7.0 compiled on December 13 2006
                      Buildfile: build.xml
                      Detected Java version: 1.5 in: c:\programme\java\jdk1.5.0_06\jre
                      Detected OS: Windows XP
                      parsing buildfile C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer4\build.xml with URI = file:/C:/jbossesb-server-4.2GA/samples/quickstarts/webservice_consumer4/build.xml
                      Project base dir set to: C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer4
                      [antlib:org.apache.tools.ant] Could not load definitions from resource org/apache/tools/ant/antlib.xml. It could not be found.
                      Importing file C:\jbossesb-server-4.2GA\samples\quickstarts\conf\base-build.xml
                      from C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer4\build.xml
                      
                      parsing buildfile C:\jbossesb-server-4.2GA\samples\quickstarts\conf\base-build.xml with URI = file:/C:/jbossesb-server-4.2GA/samples/quickstarts/conf/base-build.xml
                      Already defined in main or a previous import, ignore quickstart-specific-assemblies
                       [property] Loading C:\jbossesb-server-4.2GA\samples\quickstarts\conf\quickstarts.properties
                      [available] Unable to find C:\jbossesb-server-4.2GA\build-distr.xml
                      [available] Found: C:\jbossesb-server-4.2GA\JBossORG-EULA.txt
                      [available] Found: C:\jbossesb-server-4.2GA\server\default
                      [available] Found: C:\jbossesb-server-4.2GA\JBossORG-EULA.txt
                      [available] Found: C:\jbossesb-server-4.2GA\server\default
                      [available] Found: lib
                      Build sequence for target(s) `makewar' is [makewar]
                      Complete build sequence is [makewar, assert-ejb3-available, check-jbossesb-dist, qslib-dependencies, non-qslib-dependencies, jbossesb-dependencies, jbossesb-server-dependencies, messaging-config, messaging-dependencies, jbossmq-dependencies, quickstart-specific-dependencies, dependencies, echoCP, check-exploded, base-build.quickstart-specific-clean, deploy-exploded-esb, base-build.deploy-esb, base-build.jbossesb-server-dependencies, quickstart-specific-clean, base-build.help,
                       base-build.assert-ejb3-available, base-build.undeploy-messaging, display-instructions, base-build.quickstart-specific-undeploys, undeploy-war, deploy-messaging, base-build.help-quickstarts, base-build.echoCP, base-build.echoPaths, undeploy-messaging, quickstart-specific-undeploys, base-build.undeploy, base-build.compile, base-build.non-qslib-dependencies, base-build.jbossesb-dependencies, base-build.deploy-jms-dests, assert-ftp-config, package-deployment, assert-ws-available, base-build.dependencies, base-build.check-jbossesb-dist, help, compile, config, copy-metainf, quickstart-specific-assemblies, prepare-deployment, deploy-esb,
                      quickstart-specific-deploys, deploy, base-build.deploy-exploded-esb, base-build.check-exploded, undeploy, undeploy-jms-dests, base-build.quickstart-specific-deploys, base-build.jbossmq-dependencies, base-build.quickstart-specific-assemblies, base-build.clean, base-build.qslib-dependencies, base-build.package-deployment, echoPaths, clean, base-build.assert-ws-available, help-quickstarts, base-build.assert-ftp-config, base-build.deploy, base-build.display-instructions, base-build.undeploy-jms-dests, deploy-jms-dests, base-build.run, runtest, base-build.quickstart-specific-dependencies, base-build.prepare-deployment, base-build.messaging-dependencies, run, base-build.config, deploy-war, base-build.deploy-messaging, base-build.copy-metainf, base-build.messaging-config, ]
                      
                      makewar:
                       [mkdir] Skipping C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer4\build\war\classes because it already exists.
                       [javac] rechnung\bearbeitung\RechnungCheck.java added as rechnung\bearbeitung\RechnungCheck.class doesn't exist.
                       [javac] Compiling 1 source file to C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer4\build\war\classes
                       [javac] Using modern compiler
                      Warning: Reference compile-classpath has not been set at runtime, but was found
                      during
                      build file parsing, attempting to resolve. Future versions of Ant may support
                       referencing ids defined in non-executed targets.
                      Property "org.jboss.esb.server.home" has not been set
                      Property "org.jboss.esb.server.home" has not been set
                      Warning: Reference quickstart-dependencies-classpath has not been set at runtime
                      , but was found during
                      build file parsing, attempting to resolve. Future versions of Ant may support
                       referencing ids defined in non-executed targets.
                      Warning: Reference quickstart-lib-classpath has not been set at runtime, but was
                       found during
                      build file parsing, attempting to resolve. Future versions of Ant may support
                       referencing ids defined in non-executed targets.
                      Warning: Reference deployment-classpath has not been set at runtime, but was fou
                      nd during
                      build file parsing, attempting to resolve. Future versions of Ant may support
                       referencing ids defined in non-executed targets.
                      
                      BUILD FAILED
                      C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer4\build.xml:18:
                      C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer4${org.jboss.esb.server.home}\client not found.
                       at org.apache.tools.ant.types.AbstractFileSet.getDirectoryScanner(AbstractFileSet.java:422)
                       at org.apache.tools.ant.types.FileSet.iterator(FileSet.java:69)
                       at org.apache.tools.ant.types.resources.Union.getCollection(Union.java:105)
                       at org.apache.tools.ant.types.resources.Union.getCollection(Union.java:88)
                       at org.apache.tools.ant.types.resources.BaseResourceCollectionContainer.cacheCollection(BaseResourceCollectionContainer.java:244)
                       at org.apache.tools.ant.types.resources.BaseResourceCollectionContainer.iterator(BaseResourceCollectionContainer.java:120)
                       at org.apache.tools.ant.types.Path.iterator(Path.java:687)
                       at org.apache.tools.ant.types.Path.iterator(Path.java:684)
                       at org.apache.tools.ant.types.resources.Union.getCollection(Union.java:105)
                       at org.apache.tools.ant.types.resources.Union.getCollection(Union.java:88)
                       at org.apache.tools.ant.types.resources.BaseResourceCollectionContainer.cacheCollection(BaseResourceCollectionContainer.java:244)
                       at org.apache.tools.ant.types.resources.BaseResourceCollectionContainer.iterator(BaseResourceCollectionContainer.java:120)
                       at org.apache.tools.ant.types.Path.iterator(Path.java:687)
                       at org.apache.tools.ant.types.resources.Union.getCollection(Union.java:105)
                       at org.apache.tools.ant.types.resources.Union.list(Union.java:67)
                       at org.apache.tools.ant.types.Path.list(Path.java:356)
                       at org.apache.tools.ant.types.Path.addExisting(Path.java:327)
                       at org.apache.tools.ant.types.Path.addExisting(Path.java:315)
                       at org.apache.tools.ant.types.Path.concatSpecialPath(Path.java:560)
                       at org.apache.tools.ant.types.Path.concatSystemClasspath(Path.java:512)
                       at org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter.getCompileClasspath(DefaultCompilerAdapter.java:152)
                       at org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter.setupJ
                      avacCommandlineSwitches(DefaultCompilerAdapter.java:182)
                       at org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter.setupModernJavacCommandlineSwitches(DefaultCompilerAdapter.java:320)
                       at org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter.setupModernJavacCommand(DefaultCompilerAdapter.java:367)
                       at org.apache.tools.ant.taskdefs.compilers.Javac13.execute(Javac13.java:48)
                       at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:997)
                       at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:820)
                       at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
                       at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
                       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
                       at java.lang.reflect.Method.invoke(Method.java:585)
                       at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
                       at org.apache.tools.ant.Task.perform(Task.java:348)
                       at org.apache.tools.ant.Target.execute(Target.java:357)
                       at org.apache.tools.ant.Target.performTasks(Target.java:385)
                       at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
                       at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
                       at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
                       at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
                       at org.apache.tools.ant.Main.runBuild(Main.java:698)
                       at org.apache.tools.ant.Main.startAnt(Main.java:199)
                       at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
                       at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)


                      Even if I simply rename the webservice_consumer1 directory I get these errors. I guess I have to change the name also in some xml file, but I can't find where this could be.
                      What's the problem here? Why does it try to access C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer4${org.jboss.esb.server.home}\client ?
                      ${org.jboss.esb.server.home} is "C:\jbossesb-server-4.2GA"

                      2) I cannot even simply compile my annotated class or the HelloWorldWS.java
                      I simply tried: javac -classpath . org\jboss\soa\esb\samples\quickstart\webservice_consumer1\HelloWorldWS.java
                      but then it says: "package javax.jws does not exist" and can't compile of course...

                      I'm starting to get frustrated. Do you really have to be a Java-professional just to get a simple web service working?

                      • 8. Re: how to develop web service from scratch?
                        fabianw Newbie

                        OK, after I included the jbossws-client.jar in the classpath I could compile my service-class. I created a war-file, but I can't deploy it. I've also run 'ant makewar' on the webservice_consumer1 quickstart and tried to deploy the resulting war-file to the esb-server.

                        I get the same error message for both WARs:

                        15:14:53,078 ERROR [MainDeployer] Could not create deployment: file:/C:/jbossesb-server-4.2GA/server/default/deploy/test.war
                        java.lang.NoClassDefFoundError: Could not initialize class com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder
                         at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:406)
                         at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:270)
                         at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:103)
                         at com.sun.xml.bind.api.JAXBRIContext.newInstance(JAXBRIContext.java:89)
                         at com.sun.xml.bind.api.JAXBRIContext.newInstance(JAXBRIContext.java:100)
                         at org.jboss.ws.metadata.builder.jaxws.JAXWSMetaDataBuilder.createJAXBContext(JAXWSMetaDataBuilder.java:917)
                         at org.jboss.ws.metadata.builder.jaxws.JAXWSWebServiceMetaDataBuilder.buildWebServiceMetaData(JAXWSWebServiceMetaDataBuilder.java:142)
                         at org.jboss.ws.metadata.builder.jaxws.JAXWSServerMetaDataBuilder.setupProviderOrWebService(JAXWSServerMetaDataBuilder.java:50)
                         at org.jboss.ws.metadata.builder.jaxws.JAXWSMetaDataBuilderJSE.buildMetaData(JAXWSMetaDataBuilderJSE.java:69)
                         at org.jboss.wsf.stack.jbws.UnifiedMetaDataDeployer.create(UnifiedMetaDataDeployer.java:67)
                         at org.jboss.wsf.spi.deployment.BasicDeployerManager.deploy(BasicDeployerManager.java:69)
                         at org.jboss.wsf.container.jboss42.ArchiveDeployerHook.deploy(ArchiveDeployerHook.java:97)
                         at org.jboss.wsf.container.jboss42.DeployerInterceptor.create(DeployerInterceptor.java:79)
                         at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.create(SubDeployerInterceptorSupport.java:180)
                         at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:91)
                         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
                         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
                         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
                         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
                         at $Proxy34.create(Unknown Source)
                         at org.jboss.deployment.MainDeployer.create(MainDeployer.java:969)
                         at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:818)
                         at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
                         at sun.reflect.GeneratedMethodAccessor51.invoke(Unknown Source)
                         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
                         at java.lang.reflect.Method.invoke(Unknown Source)
                         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
                         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
                         at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
                         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
                         at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
                         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
                         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
                         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
                         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
                         at $Proxy9.deploy(Unknown Source)
                         at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
                         at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
                         at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
                         at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274)
                         at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225)


                        What am I doing wrong?

                        • 9. Re: how to develop web service from scratch?
                          Kurt Stam Master

                          If you want to use the build scripts of the quickstarts, then you have to execute them in the in quickstarts directory. Can you get an an altered webservice_consumer1 quickstart to run?

                          --K

                          • 10. Re: how to develop web service from scratch?
                            Kevin Conner Master

                            You should be able to run the scripts anywhere as long as you change the import in the build.xml file to point to the appropriate quickstarts conf location.

                            If this is not the case then we have an issue in the scripts.

                            • 11. Re: how to develop web service from scratch?
                              fabianw Newbie

                              Well, I simply copied C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer1\ to C:\jbossesb-server-4.2GA\samples\quickstarts\webservice_consumer3\
                              and 'ant makewar' stopped working.
                              What do else do I have to be aware of?

                              I just tried to alter the webservice_consumer1 quickstart. I simply changed the output string of the HelloWorldWS. Seems to work fine, at least the makewar target. On 'ant runtest' I get this error now (worked in the past):

                              16:12:42,156 ERROR [SOAPFaultHelperJAXWS] SOAP request exception
                              java.lang.UnsupportedOperationException: setProperty must be overridden by all subclasses of SOAPMessage
                               at javax.xml.soap.SOAPMessage.setProperty(Unknown Source)
                              ..........

                              So what's this now?

                              But I also have some good news! After I emptied the tmp directory and restarted the ESB-server, I can deploy the war files. This is nice, but I'm not sure if that is enough to use these services in jBPM?

                              So what do I have to do, to use the build-scripts of the webservice_consumer1 quickstart??



                              • 12. Re: how to develop web service from scratch?
                                fabianw Newbie

                                OK, I think I'm making progress now.

                                two questions:
                                1) What is the difference between SOAPClient and SOAPProcessor?
                                2) In the webservice_consumer1 quickstart are two classes (MyRequestAction, MyResponseAction). The MyRequestAction extracts the necessary parameters from the message-object and puts them in a request-map and the MyResponeAction vice versa. Do I have to write such a wrapper for every single method I want to expose as a web service? SOAPProcessor doesn't seem to need this?

                                • 13. Re: how to develop web service from scratch?
                                  Burr Sutter Master

                                  SOAPProcessor is specifically for exposing JBossWS endpoints through the ESB.

                                  SOAPClient is more focused on pulling external WS endpoints (e.g. .NET, Ruby, BEA, etc) into the ESB.


                                  SOAPClient won't give you a WSDL. SOAPProcessor will.

                                  http://localhost:8080/contract (in 4.2.1) will show you the ESB services and link to the WSDLs associated with SOAPProcessor-based endpoints.

                                  Burr

                                  • 14. Re: how to develop web service from scratch?
                                    fabianw Newbie

                                    With JBossWS endpoints you are talking about ESB-aware endpoints, right?
                                    As I understood the docs the service which is used through SOAPProcessor has to be ESB-aware. But what I dont understand: why would you use a web service for this? Every ESB-aware POJO could do the same and without converting the Message to a SOAP-message and vice versa.
                                    Am I missing something?

                                    Now I've modified the webservice_consumer1 to my needs. But as soon as I deploy the package I get the following errors:

                                    12:07:00,718 ERROR [URLDeploymentScanner] Incomplete Deployment listing:
                                    
                                    --- MBeans waiting for other MBeans ---
                                    ObjectName: jboss.esb:deployment=Rechnungskontrolle.esb
                                     State: FAILED
                                     Reason: java.lang.RuntimeException: java.io.CharConversionException: Malformed UTF-8 character: 0xf6 0x67 0x6c 0x69
                                     I Depend On:
                                     jboss.esb:deployment=soap.esb
                                     jboss.esb:service=SoapUIClientService jboss.esb.rechnung.destination:service=Queue,name=rechnung_bearbeiten_esb jboss.esb.rechnung.destination:service=Queue,name=rechnung_bearbeiten_esb_reply
                                    
                                    --- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
                                    ObjectName: jboss.esb:deployment=Rechnungskontrolle.esb
                                     State: FAILED
                                     Reason: java.lang.RuntimeException: java.io.CharConversionException: Malformed UTF-8 character: 0xf6 0x67 0x6c 0x69
                                     I Depend On:
                                     jboss.esb:deployment=soap.esb
                                     jboss.esb:service=SoapUIClientService jboss.esb.rechnung.destination:service=Queue,name=rechnung_bearbeiten_esb jboss.esb.rechnung.destination:service=Queue,name=rechnung_bearbeiten_esb_reply


                                    The web services run fine (invoked them through soapUI), but they doesn't seem to work over the ESB.

                                    I also modified the SendESBMessage class to my needs. But when I invoke it through 'ant runtest' I get the following error from ant:
                                    runtest:
                                     [echo] Send ESB message that triggers webservice call
                                     [java] Exception in thread "main" org.jboss.soa.esb.listeners.message.Messa
                                    geDeliverException: Failed to deliver message to Service [RechnungBearbeiten:UeberweiseRechnung]. Check for errors.
                                     [java] at org.jboss.soa.esb.client.ServiceInvoker.post(ServiceInvoker.java:262)
                                     [java] at org.jboss.soa.esb.client.ServiceInvoker.deliverSync(ServiceInvoker.java:159)
                                     [java] at rechnung.kontrolle.test.TesteRechnung.sendMessage(TesteRechnung.java:44)
                                     [java] at rechnung.kontrolle.test.TesteRechnung.main(TesteRechnung.java
                                    :51)
                                    BUILD FAILED


                                    and in the esb-server log file:
                                    2007-11-01 12:23:36,234 DEBUG [org.jboss.jms.server.remoting.ServerSocketWrapper] cannot write CLOSING byte
                                    java.net.SocketException: Connection reset by peer: socket write error
                                     at java.net.SocketOutputStream.socketWrite0(Native Method)
                                     at java.net.SocketOutputStream.socketWrite(Unknown Source)
                                     at java.net.SocketOutputStream.write(Unknown Source)
                                     at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
                                     at java.io.BufferedOutputStream.flush(Unknown Source)
                                     at java.io.DataOutputStream.flush(Unknown Source)
                                     at org.jboss.jms.server.remoting.ServerSocketWrapper.close(ServerSocketWrapper.java:74)
                                     at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:481)
                                     at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:165)


                                    I've no idea what is causing this. Any help would be appreciated.

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