I'm hosting a WCF Web Service with the following WSDL (a simple service using wsHttpBinding and SSL for transport security):
<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:wsx="http://schemas.xmlsoap.org/ws/2004/09/mex" xmlns:wsa10="http://www.w3.org/2005/08/addressing" xmlns:tns="http://tempuri.org/" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:wsap="http://schemas.xmlsoap.org/ws/2004/08/addressing/policy" xmlns:msc="http://schemas.microsoft.com/ws/2005/12/wsdl/contract" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" name="MagicEightBallService" targetNamespace="http://tempuri.org/">
<wsp:Policy wsu:Id="WSHttpBinding_TransportSecurity_IMagicEightBallService_policy">
<wsp:ExactlyOne>
<wsp:All>
<sp:TransportBinding xmlns:sp="http://schemas.xmlsoap.org/ws/2005/07/securitypolicy">
<wsp:Policy>
<sp:TransportToken>
<wsp:Policy>
<sp:HttpsToken RequireClientCertificate="false"/>
</wsp:Policy>
</sp:TransportToken>
<sp:AlgorithmSuite>
<wsp:Policy>
<sp:Basic256/>
</wsp:Policy>
</sp:AlgorithmSuite>
<sp:Layout>
<wsp:Policy>
<sp:Strict/>
</wsp:Policy>
</sp:Layout>
</wsp:Policy>
</sp:TransportBinding>
<wsaw:UsingAddressing/>
</wsp:All>
</wsp:ExactlyOne>
</wsp:Policy>
<wsdl:types>
<xsd:schema targetNamespace="http://tempuri.org/Imports">
<xsd:import schemaLocation="http://my.local.domain.name/MagicEightBall/MagicEightBallService.svc?xsd=xsd0" namespace="http://tempuri.org/"/>
<xsd:import schemaLocation="http://my.local.domain.name/MagicEightBall/MagicEightBallService.svc?xsd=xsd1" namespace="http://schemas.microsoft.com/2003/10/Serialization/"/>
</xsd:schema>
</wsdl:types>
<wsdl:message name="IMagicEightBallService_GetAdvice_InputMessage">
<wsdl:part name="parameters" element="tns:GetAdvice"/>
</wsdl:message>
<wsdl:message name="IMagicEightBallService_GetAdvice_OutputMessage">
<wsdl:part name="parameters" element="tns:GetAdviceResponse"/>
</wsdl:message>
<wsdl:portType name="IMagicEightBallService">
<wsdl:operation name="GetAdvice">
<wsdl:input wsaw:Action="http://tempuri.org/IMagicEightBallService/GetAdvice" message="tns:IMagicEightBallService_GetAdvice_InputMessage"/>
<wsdl:output wsaw:Action="http://tempuri.org/IMagicEightBallService/GetAdviceResponse" message="tns:IMagicEightBallService_GetAdvice_OutputMessage"/>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="WSHttpBinding_TransportSecurity_IMagicEightBallService" type="tns:IMagicEightBallService">
<wsp:PolicyReference URI="#WSHttpBinding_TransportSecurity_IMagicEightBallService_policy"/>
<soap12:binding transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="GetAdvice">
<soap12:operation soapAction="http://tempuri.org/IMagicEightBallService/GetAdvice" style="document"/>
<wsdl:input>
<soap12:body use="literal"/>
</wsdl:input>
<wsdl:output>
<soap12:body use="literal"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="MagicEightBallService">
<wsdl:port name="WSHttpBinding_TransportSecurity_IMagicEightBallService" binding="tns:WSHttpBinding_TransportSecurity_IMagicEightBallService">
<soap12:address location="https://localhost/MagicEightBall/MagicEightBallService.svc"/>
<wsa10:EndpointReference>
<wsa10:Address>
https://localhost/MagicEightBall/MagicEightBallService.svc
</wsa10:Address>
</wsa10:EndpointReference>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>
Why do I get errors when I try to consume this from Java? When I try to consume it using Axis2/Java, I get the error:
org.apache.axis2.AxisFault: Must Understand check failed for header http://www.w3.org/2005/08/addressing : Action
And when I try to use JAX-WS, I get the error:
javax.xml.ws.soap.SOAPFaultException: MustUnderstand headers:[{http://www.w3.org/2005/08/addressing}Action] are not understood
So far I haven't had any success with either of these, and I'm not sure whether a fix needs to be applied to the server or the client.
(See a related question I posted for more details, including the WCF Web.config).
Running:
ServiceClient sc = stub._getServiceClient();
sc.engageModule("addressing");
engages the Addressing module, fixing this issue.