Must Understand check Failed for UT secured Service - web-services

Question

I have an axis2 service deployed on WSO2 AS 5 which I've secured with UT basic auth using the server. I want to invoke the service with an Axis client. I generated the stub and tried this,
String trustStore = "/home/dumidu/wso2carbon.jks";
System.setProperty("javax.net.ssl.trustStore", trustStore );
System.setProperty("javax.net.ssl.trustStorePassword", "test123");
HttpTransportProperties.Authenticator basicAuthentication = new HttpTransportProperties.Authenticator();
basicAuthentication.setUsername("admin");
basicAuthentication.setPassword("admin");
OrderProcessorStub ordPros = new OrderProcessorStub();
ordPros._getServiceClient().getOptions().setProperty(org.apache.axis2.transport.http.HTTPConstants.AUTHENTICATE, basicAuthentication);
OrderProcessorStub.GetOrder req = new OrderProcessorStub.GetOrder();
req.setOrdID(1);
OrderProcessorStub.GetOrderResponse resp = ordPros.getOrder(req);
System.out.println("resp \t"+resp.get_return());
Im getting this error on client side,
INFO: basic authentication scheme selected
Apr 30, 2015 6:02:58 PM org.apache.axis2.engine.AxisEngine receive
SEVERE: Must Understand check failed for header http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd : Security
org.apache.axis2.AxisFault: Must Understand check failed for header http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd : Security
at org.apache.axis2.engine.AxisEngine.checkMustUnderstand(AxisEngine.java:105)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:171)
at org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:364)
at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:421)
at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
....
....
and this on server,
[2015-04-30 18:02:58,250] ERROR - AxisEngine System error
org.apache.axis2.AxisFault: System error
at org.wso2.carbon.security.pox.POXSecurityHandler.invoke(POXSecurityHandler.java:303)
at org.apache.axis2.engine.Phase.invokeHandler(Phase.java:340)
at org.apache.axis2.engine.Phase.invoke(Phase.java:313)
at org.apache.axis2.engine.AxisEngine.invoke(AxisEngine.java:261)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:167)
at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146)
at org.wso2.carbon.core.transports.CarbonServlet.doPost(CarbonServlet.java:231)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
....
....
what am i doing wrong here? how can i write an axis client for a service secured with UT in WSO2 AS? Thanks in advance.

Answer 1

According to the your error, It seems to be bug in the product. In this jira, It says that there is an issue with POX handler.. WSO2AS also using same handler and it must be the reason for your issue as well. In jira it says If client request does not include empty soap header, that conversion fails with following error. So as a workaround, you can try with empty SOAP header.