public class HTNGInHeaderInterceptor extends AbstractSoapInterceptor {

...

    public HTNGInHeaderInterceptor() {
        super(Phase.PRE_PROTOCOL);
    }
...
    @Override
    public void handleMessage(SoapMessage message) throws Fault {
        fixReplyTo(message);
   }
...
 private void fixReplyTo(SoapMessage message) throws Fault {
        try {
                String htngReplyToStr = "http://localhost:8088/loopback";
                AddressingProperties maps = ContextUtils.retrieveMAPs(message, false, false, true);
                if (maps != null) {
                    EndpointReferenceType ert = maps.getReplyTo();
                    AttributedURIType aut = ert.getAddress();
                    aut.setValue(htngReplyToStr);
                    ert.setAddress(aut);
                    maps.setReplyTo(ert);
                    maps.setFaultTo(ert);
                    ContextUtils.storeMAPs(maps, message, false);
        } catch (Exception e) {
            throw new SoapFault("A fault happend while fixing the ReplyTo: " + e.getMessage(), SoapFault.FAULT_CODE_SERVER);
        }

    }



java.lang.NullPointerException: null
        at org.apache.cxf.interceptor.MessageSenderInterceptor.handleMessage(MessageSenderInterceptor.java:46) ~[cxf-core-3.1.9.jar:3.1.9]
        at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308) [cxf-core-3.1.9.jar:3.1.9]
        at org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:83) [cxf-core-3.1.9.jar:3.1.9]
        at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308) [cxf-core-3.1.9.jar:3.1.9]
        at org.apache.cxf.phase.PhaseInterceptorChain.resume(PhaseInterceptorChain.java:278) [cxf-core-3.1.9.jar:3.1.9]
        at org.apache.cxf.ws.addressing.impl.InternalContextUtils$1.run(InternalContextUtils.java:321) [cxf-rt-ws-addr-3.1.9.jar:3.1.9]
        at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428) [cxf-core-3.1.9.jar:3.1.9]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_40]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_40]
        at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353) [cxf-core-3.1.9.jar:3.1.9]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40]