Enable reference side binding wire. Mainly so I can start trying out some binding specific policy implementations.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@909388 13f79535-47bb-0310-9956-ffa450edef68

4 files changed, 187 insertions, 198 deletions

diff --git a/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/Axis2OneWayBindingInvoker.java b/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/Axis2OneWayBindingInvoker.java
deleted file mode 100644
index 4a22b39ed9..0000000000
--- a/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/Axis2OneWayBindingInvoker.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.    
- */
-package org.apache.tuscany.sca.binding.ws.axis2;
-
-import javax.xml.namespace.QName;
-
-import org.apache.axiom.soap.SOAPFactory;
-import org.apache.axis2.AxisFault;
-import org.apache.axis2.client.OperationClient;
-import org.apache.axis2.client.Options;
-import org.apache.axis2.context.MessageContext;
-import org.apache.axis2.transport.http.HTTPConstants;
-import org.apache.tuscany.sca.binding.ws.WebServiceBinding;
-import org.apache.tuscany.sca.invocation.Message;
-
-/**
- * Axis2OneWayBindingInvoker uses an Axis2 OperationClient to invoke a OneWay remote web service.
- *
- * @version $Rev$ $Date$
- */
-public class Axis2OneWayBindingInvoker extends Axis2BindingInvoker {
-
-    public Axis2OneWayBindingInvoker(Axis2ReferenceBindingProvider bindingProvider,
-                                     QName wsdlOperationName,
-                                     Options options,
-                                     SOAPFactory soapFactory,
-                                     WebServiceBinding wsBinding) {
-
-        super(bindingProvider, wsdlOperationName, options, soapFactory, wsBinding);
-    }
-
-    @Override
-    protected Object invokeTarget(Message msg) throws AxisFault {
-        OperationClient operationClient = createOperationClient(msg);
-
-        // ensure connections are tracked so that they can be closed by the reference binding
-        MessageContext requestMC = operationClient.getMessageContext("Out");
-        //requestMC.getOptions().setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Boolean.TRUE);
-        Options opt = requestMC.getOptions();
-        opt.setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Boolean.TRUE);
-        opt.setUseSeparateListener(true);
-        opt.setProperty(HTTPConstants.AUTO_RELEASE_CONNECTION,Boolean.TRUE);        
-
-        operationClient.execute(false);
-
-        // REVIEW it seems ok to return null
-        return null;
-    }
-
-}
diff --git a/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/Axis2ReferenceBindingProvider.java b/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/Axis2ReferenceBindingProvider.java
index 15e4ea3435..8a5aab0ac6 100644
--- a/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/Axis2ReferenceBindingProvider.java
+++ b/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/Axis2ReferenceBindingProvider.java
@@ -55,21 +55,26 @@ import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager;
 import org.apache.commons.httpclient.params.HttpConnectionManagerParams;
 import org.apache.tuscany.sca.assembly.EndpointReference;
 import org.apache.tuscany.sca.assembly.xml.Constants;
+import org.apache.tuscany.sca.binding.ws.axis2.transport.TransportReferenceInterceptor;
 import org.apache.tuscany.sca.binding.ws.WebServiceBinding;
+import org.apache.tuscany.sca.binding.ws.axis2.provider.Axis2BindingInvoker;
 import org.apache.tuscany.sca.core.ExtensionPointRegistry;
 import org.apache.tuscany.sca.core.FactoryExtensionPoint;
-import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint;
 import org.apache.tuscany.sca.interfacedef.InterfaceContract;
 import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.InvocationChain;
 import org.apache.tuscany.sca.invocation.Invoker;
 import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.invocation.Phase;
 import org.apache.tuscany.sca.policy.util.PolicyHelper;
+import org.apache.tuscany.sca.provider.EndpointReferenceProvider;
 import org.apache.tuscany.sca.provider.ReferenceBindingProvider;
 import org.apache.tuscany.sca.runtime.RuntimeComponent;
 import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
 import org.oasisopen.sca.ServiceRuntimeException;
 
-public class Axis2ReferenceBindingProvider implements ReferenceBindingProvider {
+public class Axis2ReferenceBindingProvider implements EndpointReferenceProvider {
 
     // Tuscany extensions
     private ExtensionPointRegistry extensionPoints;
@@ -78,7 +83,7 @@ public class Axis2ReferenceBindingProvider implements ReferenceBindingProvider {
     
     // the endpoint reference configuration that's driving this binding provider
     // and some convenience data retrieved from the endpoint reference
-    private EndpointReference endpointReference;
+    private RuntimeEndpointReference endpointReference;
     private RuntimeComponent component;
     private RuntimeComponentReference reference;
     private WebServiceBinding wsBinding;
@@ -99,7 +104,7 @@ public class Axis2ReferenceBindingProvider implements ReferenceBindingProvider {
                                          EndpointReference endpointReference) {
 
         this.extensionPoints = extensionPoints;
-        this.endpointReference = endpointReference;
+        this.endpointReference = (RuntimeEndpointReference)endpointReference;
         
         this.modelFactories =  extensionPoints.getExtensionPoint(FactoryExtensionPoint.class);
         this.messageFactory = modelFactories.getFactory(MessageFactory.class); 
@@ -202,6 +207,7 @@ public class Axis2ReferenceBindingProvider implements ReferenceBindingProvider {
 
     public InterfaceContract getBindingInterfaceContract() {
         return wsBinding.getBindingInterfaceContract();
+        
     }
 
     public boolean supportsOneWayInvocation() {
@@ -241,14 +247,31 @@ public class Axis2ReferenceBindingProvider implements ReferenceBindingProvider {
         {
             options.setProperty(org.apache.axis2.Constants.Configuration.ENABLE_MTOM, org.apache.axis2.Constants.VALUE_TRUE);
         }
-        Axis2BindingInvoker invoker;
+        
+        return new Axis2BindingInvoker(endpointReference, serviceClient, wsdlOperationQName, options, soapFactory, wsBinding);
+        
+/*        
         if (operation.isNonBlocking()) {
             invoker = new Axis2OneWayBindingInvoker(this, wsdlOperationQName, options, soapFactory, wsBinding);
         } else {
-            invoker = new Axis2BindingInvoker(this, wsdlOperationQName, options, soapFactory, wsBinding);
+            invoker = new Axis2BindingInvoker(endpointReference, serviceClient, wsdlOperationQName, options, soapFactory, wsBinding);
         }
         
         return invoker;
+*/        
+    }
+    
+    /*
+     * set up the reference binding wire with the right set of ws reference
+     * interceptors
+     */
+    public void configure() {
+        InvocationChain bindingChain = endpointReference.getBindingInvocationChain();
+         
+        // add transport interceptor
+        bindingChain.addInterceptor(Phase.REFERENCE_BINDING_TRANSPORT, 
+                                    new TransportReferenceInterceptor());
+        
     }
     
     // Reference specific utility operations
@@ -326,9 +349,4 @@ public class Axis2ReferenceBindingProvider implements ReferenceBindingProvider {
         }
         return null;
     }  
-    
-    public ServiceClient getServiceClient() {
-        return serviceClient;
-    }    
-
 }
diff --git a/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/Axis2BindingInvoker.java b/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/provider/Axis2BindingInvoker.java
index fd18997adc..dd5a49d4dd 100644
--- a/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/Axis2BindingInvoker.java
+++ b/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/provider/Axis2BindingInvoker.java
@@ -16,13 +16,11 @@
  * specific language governing permissions and limitations
  * under the License.    
  */
-package org.apache.tuscany.sca.binding.ws.axis2;
+package org.apache.tuscany.sca.binding.ws.axis2.provider;
 
 import java.security.AccessController;
 import java.security.PrivilegedActionException;
 import java.security.PrivilegedExceptionAction;
-import java.util.ArrayList;
-import java.util.List;
 
 import javax.xml.namespace.QName;
 
@@ -37,83 +35,56 @@ import org.apache.axis2.addressing.EndpointReference;
 import org.apache.axis2.addressing.EndpointReferenceHelper;
 import org.apache.axis2.client.OperationClient;
 import org.apache.axis2.client.Options;
+import org.apache.axis2.client.ServiceClient;
 import org.apache.axis2.context.MessageContext;
-import org.apache.axis2.transport.http.HTTPConstants;
 import org.apache.tuscany.sca.assembly.Endpoint;
 import org.apache.tuscany.sca.binding.ws.WebServiceBinding;
 import org.apache.tuscany.sca.interfacedef.util.FaultException;
 import org.apache.tuscany.sca.invocation.DataExchangeSemantics;
 import org.apache.tuscany.sca.invocation.Invoker;
 import org.apache.tuscany.sca.invocation.Message;
-import org.apache.tuscany.sca.runtime.ReferenceParameters;
+import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
 
 
 /**
- * Axis2BindingInvoker uses an Axis2 OperationClient to invoke a remote web service
+ * Axis2BindingInvoker creates an Axis2 OperationClient to pass down the 
+ * binding chain
  *
  * @version $Rev$ $Date$
  */
 public class Axis2BindingInvoker implements Invoker, DataExchangeSemantics {
-    private final static String SCA11_TUSCANY_NS = "http://tuscany.apache.org/xmlns/sca/1.1";
-
     public static final QName QNAME_WSA_FROM =
-        new QName(AddressingConstants.Final.WSA_NAMESPACE, AddressingConstants.WSA_FROM,
+        new QName(AddressingConstants.Final.WSA_NAMESPACE, 
+                  AddressingConstants.WSA_FROM,
                   AddressingConstants.WSA_DEFAULT_PREFIX);
-    public static final String TUSCANY_PREFIX = "tuscany";
-    public static final QName CALLBACK_ID_REFPARM_QN =
-        new QName(SCA11_TUSCANY_NS, "CallbackID", TUSCANY_PREFIX);
-    public static final QName CONVERSATION_ID_REFPARM_QN =
-        new QName(SCA11_TUSCANY_NS, "ConversationID", TUSCANY_PREFIX);
     
-    private Axis2ReferenceBindingProvider bindingProvider;
+    private RuntimeEndpointReference endpointReference;
+    private ServiceClient serviceClient;
     private QName wsdlOperationName;
     private Options options;
     private SOAPFactory soapFactory;    
     private WebServiceBinding wsBinding;
     
-//    private BasicAuthenticationPolicy basicAuthenticationPolicy = null;
-//    private Axis2TokenAuthenticationPolicy axis2TokenAuthenticationPolicy = null;
-//    private List<Axis2HeaderPolicy> axis2HeaderPolicies = new ArrayList<Axis2HeaderPolicy>();
-
-    public Axis2BindingInvoker(Axis2ReferenceBindingProvider bindingProvider,
+    public Axis2BindingInvoker(RuntimeEndpointReference endpointReference, 
+                               ServiceClient serviceClient,
                                QName wsdlOperationName,
                                Options options,
                                SOAPFactory soapFactory,
                                WebServiceBinding wsBinding) {
-        this.bindingProvider = bindingProvider;
+        this.endpointReference = endpointReference;
+        this.serviceClient = serviceClient;
         this.wsdlOperationName = wsdlOperationName;
         this.options = options;
         this.soapFactory = soapFactory;
         this.wsBinding = wsBinding;
-        
-        // find out which policies are active
-        /*
-        if (wsBinding instanceof PolicySubject) {
-            List<PolicySet> policySets = ((PolicySubject)wsBinding).getPolicySets();
-            for (PolicySet ps : policySets) {
-                for (Object p : ps.getPolicies()) {
-                    if (BasicAuthenticationPolicy.class.isInstance(p)) {
-                        basicAuthenticationPolicy = (BasicAuthenticationPolicy)p;
-                    } else if (Axis2TokenAuthenticationPolicy.class.isInstance(p)) {
-                        axis2TokenAuthenticationPolicy = (Axis2TokenAuthenticationPolicy)p;
-                    } else if (Axis2HeaderPolicy.class.isInstance(p)) {
-                        axis2HeaderPolicies.add((Axis2HeaderPolicy)p);
-                    }else {
-                        // etc. check for other types of policy being present
-                    }
-                }
-            }
-        }
-        */
     }
-
-    private static final QName EXCEPTION = new QName("", "Exception");
-    
+   
     public Message invoke(Message msg) {
         try {
-            Object resp = invokeTarget(msg);
-           
-            msg.setBody(resp);
+            final OperationClient operationClient = createOperationClient(msg);
+            msg.setBindingContext(operationClient);
+            msg = endpointReference.getBindingInvocationChain().getHeadInvoker().invoke(msg);
+             
         } catch (AxisFault e) {
             if (e.getDetail() != null ) {
                 FaultException f = new FaultException(e.getMessage(), e.getDetail(), e);
@@ -124,76 +95,11 @@ public class Axis2BindingInvoker implements Invoker, DataExchangeSemantics {
             }
         } catch (Throwable e) {
             msg.setFaultBody(e);
-        }
+        }       
 
         return msg;
     }
 
-    protected Object invokeTarget(Message msg) throws AxisFault {
-        final OperationClient operationClient = createOperationClient(msg);
-
-        // ensure connections are tracked so that they can be closed by the reference binding
-        MessageContext requestMC = operationClient.getMessageContext("Out");
-        requestMC.getOptions().setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Boolean.TRUE);
-        requestMC.getOptions().setTimeOutInMilliSeconds(240000L);
-
-        /*
-        for ( PolicyHandler policyHandler : policyHandlerList ) {
-            policyHandler.beforeInvoke(msg, requestMC, operationClient);
-        }
-        */
-        
-        // set policy specified headers
-/*        
-        for (Axis2HeaderPolicy policy : axis2HeaderPolicies){
-            Axis2BindingHeaderConfigurator.setHeader(requestMC, msg, policy.getHeaderName());
-        }
-        
-        if (basicAuthenticationPolicy != null) {
-            Axis2BindingBasicAuthenticationConfigurator.setOperationOptions(operationClient, msg, basicAuthenticationPolicy);
-        }
-        
-        if (axis2TokenAuthenticationPolicy != null) {
-            Axis2BindingHeaderConfigurator.setHeader(requestMC, msg, axis2TokenAuthenticationPolicy.getTokenName());
-        }
-*/        
-        
-        // Allow privileged access to read properties. Requires PropertiesPermission read in
-        // security policy.
-        try {
-            AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
-                public Object run() throws AxisFault {
-                    operationClient.execute(true);
-                    return null;
-                }
-            });
-        } catch (PrivilegedActionException e) {
-            operationClient.complete(requestMC);
-            throw (AxisFault)e.getException();
-        }
-
-        MessageContext responseMC = operationClient.getMessageContext("In");
-        
-        /*
-        for ( PolicyHandler policyHandler : policyHandlerList ) {
-            policyHandler.afterInvoke(msg, responseMC, operationClient);
-        }
-        */
-        
-        OMElement response = responseMC.getEnvelope().getBody().getFirstElement();
-
-        // FIXME: [rfeng] We have to pay performance penalty to build the complete OM as the operationClient.complete() will
-        // release the underlying HTTP connection. 
-        // Force the response to be populated, see https://issues.apache.org/jira/browse/TUSCANY-1541
-        if (response != null) {
-            response.build();
-        }
-
-        operationClient.complete(requestMC);
-
-        return response;
-    }
-
     @SuppressWarnings("deprecation")
     protected OperationClient createOperationClient(Message msg) throws AxisFault {
         SOAPEnvelope env = soapFactory.getDefaultEnvelope();
@@ -204,8 +110,7 @@ public class Axis2BindingInvoker implements Invoker, DataExchangeSemantics {
                 if (bc instanceof OMElement) {
                     body.addChild((OMElement)bc);
                 } else {
-                    throw new IllegalArgumentException(
-                                                       "Can't handle mixed payloads between OMElements and other types.");
+                    throw new IllegalArgumentException( "Can't handle mixed payloads between OMElements and other types.");
                 }
             }
         }
@@ -213,7 +118,7 @@ public class Axis2BindingInvoker implements Invoker, DataExchangeSemantics {
         requestMC.setEnvelope(env);
 
         // Axis2 operationClients can not be shared so create a new one for each request
-        final OperationClient operationClient = bindingProvider.getServiceClient().createClient(wsdlOperationName);
+        final OperationClient operationClient = serviceClient.createClient(wsdlOperationName);
         operationClient.setOptions(options);
 
         Endpoint callbackEndpoint = msg.getFrom().getCallbackEndpoint();
@@ -232,11 +137,6 @@ public class Axis2BindingInvoker implements Invoker, DataExchangeSemantics {
             sh.addChild(epr);
             requestMC.setFrom(fromEPR);
         }
-        
-        // Set any message headers required by policy
-        // Get the header from the tuscany message
-        // If its not already an OM convert it to OM
-        // add it to the envelope header
 
         // if target endpoint was not specified when this invoker was created, 
         // use dynamically specified target endpoint passed in on this call
diff --git a/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/transport/TransportReferenceInterceptor.java b/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/transport/TransportReferenceInterceptor.java
new file mode 100644
index 0000000000..7daa58bf29
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/binding-ws-runtime-axis2/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/transport/TransportReferenceInterceptor.java
@@ -0,0 +1,137 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.binding.ws.axis2.transport;
+
+import java.security.AccessController;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
+
+import org.apache.axiom.om.OMElement;
+import org.apache.axis2.AxisFault;
+import org.apache.axis2.client.OperationClient;
+import org.apache.axis2.client.Options;
+import org.apache.axis2.context.MessageContext;
+import org.apache.axis2.transport.http.HTTPConstants;
+import org.apache.tuscany.sca.interfacedef.util.FaultException;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+
+/**
+ * Use an Axis2 OperationClient to invoke a remote web service
+ *
+ * @version $Rev$ $Date$
+ */
+public class TransportReferenceInterceptor implements Interceptor {
+    
+    private Invoker next;    
+    
+    public TransportReferenceInterceptor() {
+    }
+    
+    public Message invoke(Message msg) {
+        try {
+            Object resp = null; 
+            
+            if (msg.getOperation().isNonBlocking()) {
+                resp = invokeTargetOneWay(msg);
+            } else {
+                resp = invokeTarget(msg);
+            }
+            
+            msg.setBody(resp);
+        } catch (AxisFault e) {
+            if (e.getDetail() != null ) {
+                FaultException f = new FaultException(e.getMessage(), e.getDetail(), e);
+                f.setFaultName(e.getDetail().getQName());
+                msg.setFaultBody(f);
+            } else {
+                msg.setFaultBody(e);
+            }
+        } catch (Throwable e) {
+            msg.setFaultBody(e);
+        }
+
+        return msg;
+    }
+
+    protected Object invokeTarget(Message msg) throws AxisFault {
+        final OperationClient operationClient = msg.getBindingContext();
+
+        // ensure connections are tracked so that they can be closed by the reference binding
+        MessageContext requestMC = operationClient.getMessageContext("Out");
+        requestMC.getOptions().setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Boolean.TRUE);
+        requestMC.getOptions().setTimeOutInMilliSeconds(240000L); 
+              
+        
+        // Allow privileged access to read properties. Requires PropertiesPermission read in
+        // security policy.
+        try {
+            AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
+                public Object run() throws AxisFault {
+                    operationClient.execute(true);
+                    return null;
+                }
+            });
+        } catch (PrivilegedActionException e) {
+            operationClient.complete(requestMC);
+            throw (AxisFault)e.getException();
+        }
+
+        MessageContext responseMC = operationClient.getMessageContext("In");
+                
+        OMElement response = responseMC.getEnvelope().getBody().getFirstElement();
+
+        // FIXME: [rfeng] We have to pay performance penalty to build the complete OM as the operationClient.complete() will
+        // release the underlying HTTP connection. 
+        // Force the response to be populated, see https://issues.apache.org/jira/browse/TUSCANY-1541
+        if (response != null) {
+            response.build();
+        }
+
+        operationClient.complete(requestMC);
+
+        return response;
+    }
+    
+    protected Object invokeTargetOneWay(Message msg) throws AxisFault {
+        OperationClient operationClient = msg.getBindingContext();
+
+        // ensure connections are tracked so that they can be closed by the reference binding
+        MessageContext requestMC = operationClient.getMessageContext("Out");
+        //requestMC.getOptions().setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Boolean.TRUE);
+        Options opt = requestMC.getOptions();
+        opt.setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Boolean.TRUE);
+        opt.setUseSeparateListener(true);
+        opt.setProperty(HTTPConstants.AUTO_RELEASE_CONNECTION,Boolean.TRUE);        
+
+        operationClient.execute(false);
+
+        // REVIEW it seems ok to return null
+        return null;
+    }
+    
+    public Invoker getNext() {
+        return next;
+    }
+
+    public void setNext(Invoker next) {
+        this.next = next;
+    }    
+}