Accelerometer and HTTP Service

We are developing an iOS app that samples the accelerometer and sends the results to a local web service.  In testing, it looks like the accelerometer sampling completely stops during the HTTP service call (HTTP Post) resulting in data dropouts.  Is this expected behavior?  Is there anything to make the sampling and the HTTP call concurrent?  Would switching over to UDP using a native extension prevent the sampling dropouts? 
iPhone OS:  5.0.1
Thanks

Thanks for the advice but I don't have both http servers running at the same time. I am shure I am connecting to JES at port 8080. To assure you of this I can tell that if jes is running I get "Not found" at port 8080 and when I shut it down I get connection refused. He is there but he doesn't like me!!!!
Not even HomePortal works... sigh...

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         at com.collaxa.cube.engine.ext.wmp.BPELInvokeWMP.__executeStatements(BPELInvokeWMP.java:402)
         at com.collaxa.cube.engine.ext.wmp.BPELActivityWMP.perform(BPELActivityWMP.java:199)
         at com.collaxa.cube.engine.CubeEngine.performActivity(CubeEngine.java:3698)
         at com.collaxa.cube.engine.CubeEngine.handleWorkItem(CubeEngine.java:1655)
         at com.collaxa.cube.engine.dispatch.message.instance.PerformMessageHandler.handleLocal(PerformMessageHandler.java:75)
         at com.collaxa.cube.engine.dispatch.DispatchHelper.handleLocalMessage(DispatchHelper.java:217)
         at com.collaxa.cube.engine.dispatch.DispatchHelper.sendMemory(DispatchHelper.java:314)
         at com.collaxa.cube.engine.CubeEngine.endRequest(CubeEngine.java:5765)
         at com.collaxa.cube.engine.CubeEngine.createAndInvoke(CubeEngine.java:1087)
         at com.collaxa.cube.engine.ejb.impl.CubeEngineBean.createAndInvoke(CubeEngineBean.java:133)
         at com.collaxa.cube.engine.ejb.impl.CubeEngineBean.syncCreateAndInvoke(CubeEngineBean.java:162)
         at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at com.evermind.server.ejb.interceptor.joinpoint.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:35)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.interceptor.system.JAASInterceptor$1.run(JAASInterceptor.java:31)
         at com.evermind.server.ThreadState.runAs(ThreadState.java:693)
         at com.evermind.server.ejb.interceptor.system.JAASInterceptor.invoke(JAASInterceptor.java:34)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.interceptor.system.TxRequiresNewInterceptor.invoke(TxRequiresNewInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.InvocationContextPool.invoke(InvocationContextPool.java:55)
         at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:87)
         at CubeEngineBean_LocalProxy_4bin6i8.syncCreateAndInvoke(Unknown Source)
         at com.collaxa.cube.engine.delivery.DeliveryHandler.initialRequestAnyType(DeliveryHandler.java:547)
         at com.collaxa.cube.engine.delivery.DeliveryHandler.initialRequest(DeliveryHandler.java:464)
         at com.collaxa.cube.engine.delivery.DeliveryHandler.request(DeliveryHandler.java:133)
         at com.collaxa.cube.ejb.impl.DeliveryBean.request(DeliveryBean.java:95)
         at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at com.evermind.server.ejb.interceptor.joinpoint.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:35)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.interceptor.system.JAASInterceptor$1.run(JAASInterceptor.java:31)
         at com.evermind.server.ThreadState.runAs(ThreadState.java:693)
         at com.evermind.server.ejb.interceptor.system.JAASInterceptor.invoke(JAASInterceptor.java:34)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.interceptor.system.TxRequiredInterceptor.invoke(TxRequiredInterceptor.java:50)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
         at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
         at com.evermind.server.ejb.InvocationContextPool.invoke(InvocationContextPool.java:55)
         at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:87)
         at DeliveryBean_RemoteProxy_4bin6i8.request(Unknown Source)
         at com.collaxa.cube.ws.soap.oc4j.SOAPRequestProvider.processNormalOperation(SOAPRequestProvider.java:451)
         at com.collaxa.cube.ws.soap.oc4j.SOAPRequestProvider.processBPELMessage(SOAPRequestProvider.java:274)
         at com.collaxa.cube.ws.soap.oc4j.SOAPRequestProvider.processMessage(SOAPRequestProvider.java:120)
         at oracle.j2ee.ws.server.provider.ProviderProcessor.doEndpointProcessing(ProviderProcessor.java:956)
         at oracle.j2ee.ws.server.WebServiceProcessor.invokeEndpointImplementation(WebServiceProcessor.java:349)
         at oracle.j2ee.ws.server.provider.ProviderProcessor.doRequestProcessing(ProviderProcessor.java:466)
         at oracle.j2ee.ws.server.WebServiceProcessor.processRequest(WebServiceProcessor.java:114)
         at oracle.j2ee.ws.server.WebServiceProcessor.doService(WebServiceProcessor.java:96)
         at oracle.j2ee.ws.server.WebServiceServlet.doPost(WebServiceServlet.java:194)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
         at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
         at oracle.security.jazn.oc4j.JAZNFilter$1.run(JAZNFilter.java:400)
         at java.security.AccessController.doPrivileged(Native Method)
         at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
         at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:414)
         at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:623)
         at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
         at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871)
         at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
         at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:313)
         at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:199)
         at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
         at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
         at java.lang.Thread.run(Thread.java:595)
    Request you all to provide inputs.
    Thanks and Regards.
    John

    Hi,
    Using the exact same wsdl i was able to get a response from the HTTP service using OSB. I created a business service targeting this wsdl. Then created a proxy service to route the xml to the business service.
    I was able to successfully invoke and get response from the HTTP service without making any change to the wsdl.
    Could this be a bug in BPEL PM? Should I raise an SR?

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