Hi, i have a problem with an asynchronous call with two connections.
My Client looks like this: ... configurationContext = ConfigurationContextFactory .createConfigurationContextFromFileSystem(repositoryPath, axis2xml); serviceClient = new ServiceClient(configurationContext, null); serviceClient.engageModule(new QName( org.apache.axis2.Constants.MODULE_ADDRESSING)); Options options = new Options(); options.setTo(endpointReference); options.setUseSeparateListener(true); options.setTransportInProtocol("http"); options.setAction("urn:listenForValues"); serviceClient.setOptions(options); Callback callback = new Callback() { public void onComplete(AsyncResult result) { System.out .println("[WebServiceClient] Receiving…:\n" + result.getResponseEnvelope().getBody() .getFirstElement()); } public void onError(Exception e) { e.printStackTrace(); } }; OMFactory factory = OMAbstractFactory.getOMFactory(); serviceClient.sendReceiveNonBlocking( createDummyOMElement("myElement"), callback); public static OMElement createDummyOMElement(String opName) { OMFactory fac = OMAbstractFactory.getOMFactory(); OMNamespace omNs = fac.createOMNamespace("http://myns.de", "ns1"); OMElement method = fac.createOMElement(opName, omNs); OMElement value = fac.createOMElement("myValue", omNs); value.addChild(fac.createOMText(value, "Hello again")); method.addChild(value); return method; } Okay, now a service is called and i can watch the first interaction in tcp monitor with an empty http response body. Until now, everything seems to be as it should. Then my client is starting a SimpleHttpServer on port 8088 (configured in axis2.xml). Then my Service is invoked: public OMElement listenForValues(OMElement listenForValuesRequest) { return getTestReply(); } private static OMElement getTestReply() { OMFactory factory = OMAbstractFactory.getOMFactory(); OMElement element = factory.createOMElement(new QName("testElement")); element.setText("TestContent"); return element; } And before the service sends a response, an exception is thrown: Exception in thread "Axis2 Task" java.lang.NullPointerException at org.apache.axis2.receivers.AbstractInOutAsyncMessageReceiver$1.handleResult( AbstractInOutAsyncMessageReceiver.java:39) at org.apache.axis2.receivers.AbstractInOutAsyncMessageReceiver$2.run(AbstractI nOutAsyncMessageReceiver.java:67) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run Task(ThreadPoolExecutor.java:665) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:690) at java.lang.Thread.run(Unknown Source) I don´t know what i am doing wrong and unfortunately spent lots of hours on this problem. My service is, of course, configured with a RawXMLINOutAsyncMessageReceiver. But the service itself sends no answer to the callback handler in a second connection. Any ideas to solve the problem? Thanks in advance! Andi