/**
   * Handle the response or error (during a failed send) message received for an outgoing request
   *
   * @param messageID Request message ID
   * @param response the Axis2 MessageContext that has been received and has to be handled
   * @param synapseOutMsgCtx the corresponding (outgoing) Synapse MessageContext for the above Axis2
   *     MC, that holds Synapse specific information such as the error handler stack and local
   *     properties etc.
   * @throws AxisFault if the message cannot be processed
   */
  private void handleMessage(
      String messageID,
      MessageContext response,
      org.apache.synapse.MessageContext synapseOutMsgCtx,
      AsyncCallback callback)
      throws AxisFault {
    // apply the tenant information to the out message context
    TenantInfoConfigurator configurator =
        synapseOutMsgCtx.getEnvironment().getTenantInfoConfigurator();
    if (configurator != null) {
      configurator.applyTenantInfo(synapseOutMsgCtx);
    }
    Object o = response.getProperty(SynapseConstants.SENDING_FAULT);
    if (o != null && Boolean.TRUE.equals(o)) {

      StatisticsReporter.reportFaultForAll(
          synapseOutMsgCtx, ErrorLogFactory.createErrorLog(response));
      // there is a sending fault. propagate the fault to fault handlers.

      Stack faultStack = synapseOutMsgCtx.getFaultStack();
      if (faultStack != null && !faultStack.isEmpty()) {

        // if we have access to the full synapseOutMsgCtx.getEnvelope(), then let
        // it flow with the error details. Else, replace its envelope with the
        // fault envelope
        try {
          synapseOutMsgCtx.getEnvelope().build();
        } catch (OMException x) {
          synapseOutMsgCtx.setEnvelope(response.getEnvelope());
        }

        Exception e = (Exception) response.getProperty(SynapseConstants.ERROR_EXCEPTION);

        synapseOutMsgCtx.setProperty(SynapseConstants.SENDING_FAULT, Boolean.TRUE);
        synapseOutMsgCtx.setProperty(
            SynapseConstants.ERROR_CODE, response.getProperty(SynapseConstants.ERROR_CODE));
        synapseOutMsgCtx.setProperty(
            SynapseConstants.ERROR_MESSAGE, response.getProperty(SynapseConstants.ERROR_MESSAGE));
        synapseOutMsgCtx.setProperty(
            SynapseConstants.ERROR_DETAIL, response.getProperty(SynapseConstants.ERROR_DETAIL));
        synapseOutMsgCtx.setProperty(SynapseConstants.ERROR_EXCEPTION, e);

        if (log.isDebugEnabled()) {
          log.debug(
              "[Failed Request Message ID : "
                  + messageID
                  + "]"
                  + " [New to be Retried Request Message ID : "
                  + synapseOutMsgCtx.getMessageID()
                  + "]");
        }

        int errorCode = (Integer) response.getProperty(SynapseConstants.ERROR_CODE);

        // If a timeout has occured and the timeout action of the callback is to discard the message
        if (errorCode == SynapseConstants.NHTTP_CONNECTION_TIMEOUT
            && callback.getTimeOutAction() == SynapseConstants.DISCARD) {
          // Do not execute any fault sequences. Discard message
          if (log.isWarnEnabled()) {
            log.warn(
                "Synapse timed out for the request with Message ID : "
                    + messageID
                    + ". Ignoring fault handlers since the timeout action is DISCARD");
          }
          faultStack.removeAllElements();
        } else {
          ((FaultHandler) faultStack.pop()).handleFault(synapseOutMsgCtx, null);
        }
      }

    } else {

      // there can always be only one instance of an Endpoint in the faultStack of a message
      // if the send was successful, so remove it before we proceed any further
      Stack faultStack = synapseOutMsgCtx.getFaultStack();

      Endpoint successfulEndpoint = null;
      if (faultStack != null && !faultStack.isEmpty() && faultStack.peek() instanceof Endpoint) {
        successfulEndpoint = (Endpoint) faultStack.pop();
      }

      if (log.isDebugEnabled()) {
        log.debug("Synapse received an asynchronous response message");
        log.debug(
            "Received To: " + (response.getTo() != null ? response.getTo().getAddress() : "null"));
        log.debug(
            "SOAPAction: "
                + (response.getSoapAction() != null ? response.getSoapAction() : "null"));
        log.debug(
            "WSA-Action: " + (response.getWSAAction() != null ? response.getWSAAction() : "null"));
        String[] cids = response.getAttachmentMap().getAllContentIDs();
        if (cids != null && cids.length > 0) {
          for (String cid : cids) {
            log.debug("Attachment : " + cid);
          }
        }
        log.debug("Body : \n" + response.getEnvelope());
      }
      MessageContext axisOutMsgCtx =
          ((Axis2MessageContext) synapseOutMsgCtx).getAxis2MessageContext();

      // Processes 'Accept-Encoding'
      ResponseAcceptEncodingProcessor.process(response, axisOutMsgCtx);

      response.setServiceContext(null);
      response.setOperationContext(axisOutMsgCtx.getOperationContext());
      response.setAxisMessage(
          axisOutMsgCtx.getAxisOperation().getMessage(WSDLConstants.MESSAGE_LABEL_OUT_VALUE));

      // set properties on response
      response.setServerSide(true);
      response.setProperty(SynapseConstants.ISRESPONSE_PROPERTY, Boolean.TRUE);
      response.setProperty(
          MessageContext.TRANSPORT_OUT, axisOutMsgCtx.getProperty(MessageContext.TRANSPORT_OUT));
      response.setProperty(
          org.apache.axis2.Constants.OUT_TRANSPORT_INFO,
          axisOutMsgCtx.getProperty(org.apache.axis2.Constants.OUT_TRANSPORT_INFO));
      response.setTransportIn(axisOutMsgCtx.getTransportIn());
      response.setTransportOut(axisOutMsgCtx.getTransportOut());

      // If request is REST assume that the response is REST too
      response.setDoingREST(axisOutMsgCtx.isDoingREST());
      if (axisOutMsgCtx.isDoingMTOM()) {
        response.setDoingMTOM(true);
        response.setProperty(
            org.apache.axis2.Constants.Configuration.ENABLE_MTOM,
            org.apache.axis2.Constants.VALUE_TRUE);
      }
      if (axisOutMsgCtx.isDoingSwA()) {
        response.setDoingSwA(true);
        response.setProperty(
            org.apache.axis2.Constants.Configuration.ENABLE_SWA,
            org.apache.axis2.Constants.VALUE_TRUE);
      }

      // when axis2 receives a soap message without addressing headers it users
      // DISABLE_ADDRESSING_FOR_OUT_MESSAGES property to keep it and hence avoid addressing
      // headers on the response. this causes a problem for synapse if the original message
      // it receivs (from client) has addressing and the synaspse service invocation has not
      // engage addressing. in this case when synapse receives the response from the server
      // addessing In handler dissable addressing since that response does not have addressing
      // headers. synapse sends the response to its orignal client using the same message
      // context. Then this response does not have addressing headers since it already
      // disable. to avoid this we need to set the DISABLE_ADDRESSING_FOR_OUT_MESSAGES
      // property state to original state.
      if (axisOutMsgCtx.getProperty(AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES)
          != null) {

        response.setProperty(
            AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES,
            axisOutMsgCtx.getProperty(AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES));
      } else {
        response.removeProperty(AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES);
      }

      Object messageType =
          axisOutMsgCtx.getProperty(org.apache.axis2.Constants.Configuration.MESSAGE_TYPE);
      if (!HTTPConstants.MEDIA_TYPE_X_WWW_FORM.equals(messageType)) {
        // copy the message type property that's used by the out message to the
        // response message
        response.setProperty(org.apache.axis2.Constants.Configuration.MESSAGE_TYPE, messageType);
      }

      // compare original received message (axisOutMsgCtx) soap version with the response
      // if they are different change to original version
      if (axisOutMsgCtx.isSOAP11() != response.isSOAP11()) {
        if (axisOutMsgCtx.isSOAP11()) {
          SOAPUtils.convertSOAP12toSOAP11(response);
        } else {
          SOAPUtils.convertSOAP11toSOAP12(response);
        }
      }

      if (axisOutMsgCtx.getMessageID() != null) {
        response.setRelationships(new RelatesTo[] {new RelatesTo(axisOutMsgCtx.getMessageID())});
      }

      response.setReplyTo(axisOutMsgCtx.getReplyTo());
      response.setFaultTo(axisOutMsgCtx.getFaultTo());

      if (axisOutMsgCtx.isPropertyTrue(NhttpConstants.IGNORE_SC_ACCEPTED)) {
        response.setProperty(NhttpConstants.FORCE_SC_ACCEPTED, Constants.VALUE_TRUE);
      }

      // create the synapse message context for the response
      Axis2MessageContext synapseInMessageContext =
          new Axis2MessageContext(
              response, synapseOutMsgCtx.getConfiguration(), synapseOutMsgCtx.getEnvironment());
      synapseInMessageContext.setResponse(true);

      Object obj = synapseOutMsgCtx.getProperty(SynapseConstants.FORCE_ERROR_PROPERTY);
      String errorOnSOAPFault = (String) obj;

      if (Constants.VALUE_TRUE.equals(errorOnSOAPFault) && successfulEndpoint != null) {

        if (log.isDebugEnabled()) {
          log.debug("FORCE_ERROR_ON_SOAP_FAULT is true, checking for SOAPFault");
        }

        try {
          RelayUtils.buildMessage(
              ((Axis2MessageContext) synapseInMessageContext).getAxis2MessageContext(), true);
        } catch (Exception e) {
          // handleException("Error while building message", e, synapseInMessageContext);
        }

        if ((synapseInMessageContext.getEnvelope() != null)
            && synapseInMessageContext.getEnvelope().hasFault()) {

          if (log.isDebugEnabled()) {
            log.debug(
                "SOAPFault found in response message, forcing endpoint "
                    + successfulEndpoint.getName()
                    + " to fail");
          }

          // setup new pipe configuration..if failure happens (this will be setup as the source
          // writer and during the TargetContext
          // clean up operation the writer will be reset and pull to the buffer
          MessageContext axis2OUTMC =
              ((Axis2MessageContext) synapseOutMsgCtx).getAxis2MessageContext();
          NHttpServerConnection conn =
              (NHttpServerConnection) axis2OUTMC.getProperty("pass-through.Source-Connection");
          if (conn != null) {
            SourceConfiguration sourceConfiguration =
                (SourceConfiguration) axis2OUTMC.getProperty("PASS_THROUGH_SOURCE_CONFIGURATION");
            Pipe pipe =
                new Pipe(
                    conn,
                    sourceConfiguration.getBufferFactory().getBuffer(),
                    "source",
                    sourceConfiguration);
            axis2OUTMC.setProperty(PassThroughConstants.PASS_THROUGH_PIPE, pipe);
          }

          StatisticsReporter.reportFaultForAll(
              synapseOutMsgCtx, ErrorLogFactory.createErrorLog(response));
          synapseOutMsgCtx.setProperty(SynapseConstants.SENDING_FAULT, Boolean.TRUE);
          synapseOutMsgCtx.setProperty(
              SynapseConstants.ERROR_CODE, SynapseConstants.ENDPOINT_CUSTOM_ERROR);
          ((FaultHandler) successfulEndpoint).handleFault(synapseOutMsgCtx, null);
          return;
        } else {
          successfulEndpoint.onSuccess();
        }

      } else if (successfulEndpoint != null) {
        successfulEndpoint.onSuccess();
      }

      synapseInMessageContext.setTo(
          new EndpointReference(AddressingConstants.Final.WSA_ANONYMOUS_URL));
      synapseInMessageContext.setTracingState(synapseOutMsgCtx.getTracingState());

      // set the properties of the original MC to the new MC

      for (Object key : synapseOutMsgCtx.getPropertyKeySet()) {
        synapseInMessageContext.setProperty(
            (String) key, synapseOutMsgCtx.getProperty((String) key));
      }

      // Copy SequenceCallStack from original MC to the new MC
      if (synapseOutMsgCtx.isContinuationEnabled()) {

        // Set the message direction
        if (!synapseOutMsgCtx.isResponse()) {
          synapseInMessageContext.setResponse(false);
        }

        Stack<ContinuationState> seqContinuationStates =
            synapseOutMsgCtx.getContinuationStateStack();
        for (int i = 0; i < seqContinuationStates.size(); i++) {
          synapseInMessageContext.pushContinuationState(seqContinuationStates.get(i));
        }
      }

      // If this response is related to session affinity endpoints -Server initiated session
      Dispatcher dispatcher =
          (Dispatcher)
              synapseOutMsgCtx.getProperty(SynapseConstants.PROP_SAL_ENDPOINT_CURRENT_DISPATCHER);
      if (dispatcher != null && dispatcher.isServerInitiatedSession()) {
        dispatcher.updateSession(synapseInMessageContext);
      }

      StatisticsReporter.reportForAllOnResponseReceived(synapseInMessageContext);

      // send the response message through the synapse mediation flow
      try {
        synapseOutMsgCtx.getEnvironment().injectMessage(synapseInMessageContext);
      } catch (SynapseException syne) {
        Stack stack = synapseInMessageContext.getFaultStack();
        if (stack != null && !stack.isEmpty()) {
          ((FaultHandler) stack.pop()).handleFault(synapseInMessageContext, syne);
        } else {
          log.error(
              "Synapse encountered an exception, "
                  + "No error handlers found - [Message Dropped]\n"
                  + syne.getMessage());
        }
      }
    }
  }
  /**
   * Based on the Axis2 client code. Sends the Axis2 Message context out and returns the Axis2
   * message context for the response.
   *
   * <p>Here Synapse works as a Client to the service. It would expect 200 ok, 202 ok and 500
   * internal server error as possible responses.
   *
   * @param endpoint the endpoint being sent to, maybe null
   * @param synapseOutMessageContext the outgoing synapse message
   * @throws AxisFault on errors
   */
  public static void send(
      EndpointDefinition endpoint, org.apache.synapse.MessageContext synapseOutMessageContext)
      throws AxisFault {

    boolean separateListener = false;
    boolean wsSecurityEnabled = false;
    String wsSecPolicyKey = null;
    String inboundWsSecPolicyKey = null;
    String outboundWsSecPolicyKey = null;
    boolean wsRMEnabled = false;
    String wsRMPolicyKey = null;
    boolean wsAddressingEnabled = false;
    String wsAddressingVersion = null;

    if (endpoint != null) {
      separateListener = endpoint.isUseSeparateListener();
      wsSecurityEnabled = endpoint.isSecurityOn();
      wsSecPolicyKey = endpoint.getWsSecPolicyKey();
      inboundWsSecPolicyKey = endpoint.getInboundWsSecPolicyKey();
      outboundWsSecPolicyKey = endpoint.getOutboundWsSecPolicyKey();
      wsRMEnabled = endpoint.isReliableMessagingOn();
      wsRMPolicyKey = endpoint.getWsRMPolicyKey();
      wsAddressingEnabled = endpoint.isAddressingOn() || wsRMEnabled;
      wsAddressingVersion = endpoint.getAddressingVersion();
    }

    if (log.isDebugEnabled()) {
      String to;
      if (endpoint != null && endpoint.getAddress() != null) {
        to = endpoint.getAddress(synapseOutMessageContext);
      } else {
        to = synapseOutMessageContext.getTo().toString();
      }

      log.debug(
          "Sending [add = "
              + wsAddressingEnabled
              + "] [sec = "
              + wsSecurityEnabled
              + "] [rm = "
              + wsRMEnabled
              + (endpoint != null
                  ? "] [mtom = "
                      + endpoint.isUseMTOM()
                      + "] [swa = "
                      + endpoint.isUseSwa()
                      + "] [format = "
                      + endpoint.getFormat()
                      + "] [force soap11="
                      + endpoint.isForceSOAP11()
                      + "] [force soap12="
                      + endpoint.isForceSOAP12()
                      + "] [pox="
                      + endpoint.isForcePOX()
                      + "] [get="
                      + endpoint.isForceGET()
                      + "] [encoding="
                      + endpoint.getCharSetEncoding()
                  : "")
              + "] [to="
              + to
              + "]");
    }

    // save the original message context without altering it, so we can tie the response
    MessageContext originalInMsgCtx =
        ((Axis2MessageContext) synapseOutMessageContext).getAxis2MessageContext();

    // TODO Temp hack: ESB removes the session id from request in a random manner.
    Map headers = (Map) originalInMsgCtx.getProperty(MessageContext.TRANSPORT_HEADERS);
    String session = (String) synapseOutMessageContext.getProperty("LB_COOKIE_HEADER");
    if (session != null) {
      headers.put("Cookie", session);
    }

    // create a new MessageContext to be sent out as this should not corrupt the original
    // we need to create the response to the original message later on
    String preserveAddressingProperty =
        (String) synapseOutMessageContext.getProperty(SynapseConstants.PRESERVE_WS_ADDRESSING);
    MessageContext axisOutMsgCtx = cloneForSend(originalInMsgCtx, preserveAddressingProperty);

    if (log.isDebugEnabled()) {
      log.debug(
          "Message [Original Request Message ID : "
              + synapseOutMessageContext.getMessageID()
              + "]"
              + " [New Cloned Request Message ID : "
              + axisOutMsgCtx.getMessageID()
              + "]");
    }
    // set all the details of the endpoint only to the cloned message context
    // so that we can use the original message context for resending through different endpoints
    if (endpoint != null) {

      if (SynapseConstants.FORMAT_POX.equals(endpoint.getFormat())) {
        axisOutMsgCtx.setDoingREST(true);
        axisOutMsgCtx.setProperty(
            org.apache.axis2.Constants.Configuration.MESSAGE_TYPE,
            org.apache.axis2.transport.http.HTTPConstants.MEDIA_TYPE_APPLICATION_XML);
        axisOutMsgCtx.setProperty(
            Constants.Configuration.CONTENT_TYPE,
            org.apache.axis2.transport.http.HTTPConstants.MEDIA_TYPE_APPLICATION_XML);

        Object o =
            axisOutMsgCtx.getProperty(org.apache.axis2.context.MessageContext.TRANSPORT_HEADERS);
        Map _headers = (Map) o;
        if (_headers != null) {
          _headers.remove(HTTP.CONTENT_TYPE);
          _headers.put(
              HTTP.CONTENT_TYPE,
              org.apache.axis2.transport.http.HTTPConstants.MEDIA_TYPE_APPLICATION_XML);
        }

      } else if (SynapseConstants.FORMAT_GET.equals(endpoint.getFormat())) {
        axisOutMsgCtx.setDoingREST(true);
        axisOutMsgCtx.setProperty(
            Constants.Configuration.HTTP_METHOD, Constants.Configuration.HTTP_METHOD_GET);
        axisOutMsgCtx.setProperty(
            org.apache.axis2.Constants.Configuration.MESSAGE_TYPE,
            org.apache.axis2.transport.http.HTTPConstants.MEDIA_TYPE_X_WWW_FORM);

      } else if (SynapseConstants.FORMAT_SOAP11.equals(endpoint.getFormat())) {
        axisOutMsgCtx.setDoingREST(false);
        axisOutMsgCtx.removeProperty(org.apache.axis2.Constants.Configuration.MESSAGE_TYPE);
        // We need to set this explicitly here in case the request was not a POST
        axisOutMsgCtx.setProperty(
            Constants.Configuration.HTTP_METHOD, Constants.Configuration.HTTP_METHOD_POST);
        if (axisOutMsgCtx.getSoapAction() == null && axisOutMsgCtx.getWSAAction() != null) {
          axisOutMsgCtx.setSoapAction(axisOutMsgCtx.getWSAAction());
        }
        if (!axisOutMsgCtx.isSOAP11()) {
          SOAPUtils.convertSOAP12toSOAP11(axisOutMsgCtx);
        }
        Object o =
            axisOutMsgCtx.getProperty(org.apache.axis2.context.MessageContext.TRANSPORT_HEADERS);
        Map _headers = (Map) o;
        if (_headers != null) {
          _headers.remove(HTTP.CONTENT_TYPE);
          _headers.put(
              HTTP.CONTENT_TYPE, org.apache.axis2.transport.http.HTTPConstants.MEDIA_TYPE_TEXT_XML);
        }

      } else if (SynapseConstants.FORMAT_SOAP12.equals(endpoint.getFormat())) {
        axisOutMsgCtx.setDoingREST(false);
        axisOutMsgCtx.removeProperty(org.apache.axis2.Constants.Configuration.MESSAGE_TYPE);
        // We need to set this explicitly here in case the request was not a POST
        axisOutMsgCtx.setProperty(
            Constants.Configuration.HTTP_METHOD, Constants.Configuration.HTTP_METHOD_POST);
        if (axisOutMsgCtx.getSoapAction() == null && axisOutMsgCtx.getWSAAction() != null) {
          axisOutMsgCtx.setSoapAction(axisOutMsgCtx.getWSAAction());
        }
        if (axisOutMsgCtx.isSOAP11()) {
          SOAPUtils.convertSOAP11toSOAP12(axisOutMsgCtx);
        }
        Object o =
            axisOutMsgCtx.getProperty(org.apache.axis2.context.MessageContext.TRANSPORT_HEADERS);
        Map _headers = (Map) o;
        if (_headers != null) {
          _headers.remove(HTTP.CONTENT_TYPE);
          _headers.put(
              HTTP.CONTENT_TYPE,
              org.apache.axis2.transport.http.HTTPConstants.MEDIA_TYPE_APPLICATION_SOAP_XML);
        }

      } else if (SynapseConstants.FORMAT_REST.equals(endpoint.getFormat())) {
        /*format=rest is kept only backword compatibility. We no longer needed that.*/
        /* Remove Message Type  for GET and DELETE Request */
        if (originalInMsgCtx.getProperty(Constants.Configuration.HTTP_METHOD) != null) {
          if (originalInMsgCtx
                  .getProperty(Constants.Configuration.HTTP_METHOD)
                  .toString()
                  .equals(Constants.Configuration.HTTP_METHOD_GET)
              || originalInMsgCtx
                  .getProperty(Constants.Configuration.HTTP_METHOD)
                  .toString()
                  .equals(Constants.Configuration.HTTP_METHOD_DELETE)) {
            axisOutMsgCtx.removeProperty(org.apache.axis2.Constants.Configuration.MESSAGE_TYPE);
          }
        }
        axisOutMsgCtx.setDoingREST(true);
      } else {
        processWSDL2RESTRequestMessageType(originalInMsgCtx, axisOutMsgCtx);
      }

      if (endpoint.isUseMTOM()) {
        axisOutMsgCtx.setDoingMTOM(true);
        // fix / workaround for AXIS2-1798
        axisOutMsgCtx.setProperty(
            org.apache.axis2.Constants.Configuration.ENABLE_MTOM,
            org.apache.axis2.Constants.VALUE_TRUE);
        axisOutMsgCtx.setDoingMTOM(true);

      } else if (endpoint.isUseSwa()) {
        axisOutMsgCtx.setDoingSwA(true);
        // fix / workaround for AXIS2-1798
        axisOutMsgCtx.setProperty(
            org.apache.axis2.Constants.Configuration.ENABLE_SWA,
            org.apache.axis2.Constants.VALUE_TRUE);
        axisOutMsgCtx.setDoingSwA(true);
      }

      if (endpoint.getCharSetEncoding() != null) {
        axisOutMsgCtx.setProperty(
            Constants.Configuration.CHARACTER_SET_ENCODING, endpoint.getCharSetEncoding());
        // Need to Clean this up. TargetRequest line 176 contains a code block which over writes the
        // Content-Type returned by the message formatter with the Content-Type in
        // TRANSPORT_HEADERS. Because of that, even when
        // the Character set encoding is set by the message formatter, it will be replaced by the
        // Content-Type header in TRANSPORT_HEADERS.
        // So Im setting a property to check in TargetRequest before over writing the header.
        axisOutMsgCtx.setProperty("EndpointCharEncodingSet", "true");
      }

      // HTTP Endpoint : use the specified HTTP method and remove REST_URL_POSTFIX, it's not
      // supported in HTTP Endpoint
      if (endpoint.isHTTPEndpoint()) {
        axisOutMsgCtx.setProperty(
            Constants.Configuration.HTTP_METHOD,
            synapseOutMessageContext.getProperty(Constants.Configuration.HTTP_METHOD));
        axisOutMsgCtx.removeProperty(NhttpConstants.REST_URL_POSTFIX);
      }

      // add rest request' suffix URI
      String restSuffix = (String) axisOutMsgCtx.getProperty(NhttpConstants.REST_URL_POSTFIX);
      boolean isRest = SynapseConstants.FORMAT_REST.equals(endpoint.getFormat());

      if (!isRest && !endpoint.isForceSOAP11() && !endpoint.isForceSOAP12()) {
        isRest = isRequestRest(originalInMsgCtx);
      }

      if (endpoint.getAddress() != null) {
        String address = endpoint.getAddress(synapseOutMessageContext);
        if (isRest && restSuffix != null && !"".equals(restSuffix)) {

          String url;
          if (!address.endsWith("/")
              && !restSuffix.startsWith("/")
              && !restSuffix.startsWith("?")) {
            url = address + "/" + restSuffix;
          } else if (address.endsWith("/") && restSuffix.startsWith("/")) {
            url = address + restSuffix.substring(1);
          } else if (address.endsWith("/") && restSuffix.startsWith("?")) {
            url = address.substring(0, address.length() - 1) + restSuffix;
          } else {
            url = address + restSuffix;
          }
          axisOutMsgCtx.setTo(new EndpointReference(url));

        } else {
          axisOutMsgCtx.setTo(new EndpointReference(address));
        }
        axisOutMsgCtx.setProperty(NhttpConstants.ENDPOINT_PREFIX, address);
        synapseOutMessageContext.setProperty(SynapseConstants.ENDPOINT_PREFIX, address);
      } else {
        // Supporting RESTful invocation
        if (isRest && restSuffix != null && !"".equals(restSuffix)) {
          EndpointReference epr = axisOutMsgCtx.getTo();
          if (epr != null) {
            String address = epr.getAddress();
            String url;
            if (!address.endsWith("/")
                && !restSuffix.startsWith("/")
                && !restSuffix.startsWith("?")) {
              url = address + "/" + restSuffix;
            } else {
              url = address + restSuffix;
            }
            axisOutMsgCtx.setTo(new EndpointReference(url));
          }
        }
      }

      if (endpoint.isUseSeparateListener()) {
        axisOutMsgCtx.getOptions().setUseSeparateListener(true);
      }
    } else {
      processWSDL2RESTRequestMessageType(originalInMsgCtx, axisOutMsgCtx);
    }

    // only put whttp:location for the REST (GET) requests, otherwise causes issues for POX messages
    if (axisOutMsgCtx.isDoingREST()
        && HTTPConstants.MEDIA_TYPE_X_WWW_FORM.equals(
            axisOutMsgCtx.getProperty(Constants.Configuration.MESSAGE_TYPE))) {
      if (axisOutMsgCtx.getProperty(WSDL2Constants.ATTR_WHTTP_LOCATION) == null
          && axisOutMsgCtx.getEnvelope().getBody().getFirstElement() != null) {
        axisOutMsgCtx.setProperty(
            WSDL2Constants.ATTR_WHTTP_LOCATION,
            axisOutMsgCtx.getEnvelope().getBody().getFirstElement().getQName().getLocalPart());
      }
    }

    if (wsAddressingEnabled) {

      if (wsAddressingVersion != null
          && SynapseConstants.ADDRESSING_VERSION_SUBMISSION.equals(wsAddressingVersion)) {

        axisOutMsgCtx.setProperty(
            AddressingConstants.WS_ADDRESSING_VERSION,
            AddressingConstants.Submission.WSA_NAMESPACE);

      } else if (wsAddressingVersion != null
          && SynapseConstants.ADDRESSING_VERSION_FINAL.equals(wsAddressingVersion)) {

        axisOutMsgCtx.setProperty(
            AddressingConstants.WS_ADDRESSING_VERSION, AddressingConstants.Final.WSA_NAMESPACE);
      }

      axisOutMsgCtx.setProperty(
          AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES, Boolean.FALSE);
    } else {
      axisOutMsgCtx.setProperty(
          AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES, Boolean.TRUE);
    }

    // remove the headers if we don't need to preserve them.
    // determine weather we need to preserve the processed headers
    String preserveHeaderProperty =
        (String) synapseOutMessageContext.getProperty(SynapseConstants.PRESERVE_PROCESSED_HEADERS);
    if (preserveHeaderProperty == null || !Boolean.parseBoolean(preserveHeaderProperty)) {
      // default behaviour is to remove the headers
      MessageHelper.removeProcessedHeaders(
          axisOutMsgCtx,
          (preserveAddressingProperty != null && Boolean.parseBoolean(preserveAddressingProperty)));
    }

    ConfigurationContext axisCfgCtx = axisOutMsgCtx.getConfigurationContext();
    AxisConfiguration axisCfg = axisCfgCtx.getAxisConfiguration();

    AxisService anoymousService =
        AnonymousServiceFactory.getAnonymousService(
            synapseOutMessageContext.getConfiguration(),
            axisCfg,
            wsAddressingEnabled,
            wsRMEnabled,
            wsSecurityEnabled);
    // mark the anon services created to be used in the client side of synapse as hidden
    // from the server side of synapse point of view
    anoymousService.getParent().addParameter(SynapseConstants.HIDDEN_SERVICE_PARAM, "true");
    ServiceGroupContext sgc =
        new ServiceGroupContext(axisCfgCtx, (AxisServiceGroup) anoymousService.getParent());
    ServiceContext serviceCtx = sgc.getServiceContext(anoymousService);

    boolean outOnlyMessage =
        "true".equals(synapseOutMessageContext.getProperty(SynapseConstants.OUT_ONLY));

    // get a reference to the DYNAMIC operation of the Anonymous Axis2 service
    AxisOperation axisAnonymousOperation =
        anoymousService.getOperation(
            outOnlyMessage
                ? new QName(AnonymousServiceFactory.OUT_ONLY_OPERATION)
                : new QName(AnonymousServiceFactory.OUT_IN_OPERATION));

    Options clientOptions = MessageHelper.cloneOptions(originalInMsgCtx.getOptions());
    clientOptions.setUseSeparateListener(separateListener);
    // if RM is requested,
    if (wsRMEnabled) {
      // if a WS-RM policy is specified, use it
      if (wsRMPolicyKey != null) {
        Object property = synapseOutMessageContext.getEntry(wsRMPolicyKey);
        if (property instanceof OMElement) {
          OMElement policyOMElement = (OMElement) property;
          RMAssertionBuilder builder = new RMAssertionBuilder();
          SandeshaPolicyBean sandeshaPolicyBean =
              (SandeshaPolicyBean) builder.build(policyOMElement, null);
          Parameter policyParam =
              new Parameter(Sandesha2Constants.SANDESHA_PROPERTY_BEAN, sandeshaPolicyBean);
          anoymousService.addParameter(policyParam);
        }
      }
    }

    // if security is enabled,
    if (wsSecurityEnabled) {
      // if a WS-Sec policy is specified, use it
      if (wsSecPolicyKey != null) {
        clientOptions.setProperty(
            SynapseConstants.RAMPART_POLICY,
            MessageHelper.getPolicy(synapseOutMessageContext, wsSecPolicyKey));
      } else {
        if (inboundWsSecPolicyKey != null) {
          clientOptions.setProperty(
              SynapseConstants.RAMPART_IN_POLICY,
              MessageHelper.getPolicy(synapseOutMessageContext, inboundWsSecPolicyKey));
        }
        if (outboundWsSecPolicyKey != null) {
          clientOptions.setProperty(
              SynapseConstants.RAMPART_OUT_POLICY,
              MessageHelper.getPolicy(synapseOutMessageContext, outboundWsSecPolicyKey));
        }
      }
      // temporary workaround for https://issues.apache.org/jira/browse/WSCOMMONS-197
      if (axisOutMsgCtx.getEnvelope().getHeader() == null) {
        SOAPFactory fac =
            axisOutMsgCtx.isSOAP11()
                ? OMAbstractFactory.getSOAP11Factory()
                : OMAbstractFactory.getSOAP12Factory();
        fac.createSOAPHeader(axisOutMsgCtx.getEnvelope());
      }
    }

    OperationClient mepClient = axisAnonymousOperation.createClient(serviceCtx, clientOptions);
    mepClient.addMessageContext(axisOutMsgCtx);
    axisOutMsgCtx.setAxisMessage(
        axisAnonymousOperation.getMessage(WSDLConstants.MESSAGE_LABEL_OUT_VALUE));

    // set the SEND_TIMEOUT for transport sender
    if (endpoint != null && endpoint.getTimeoutDuration() > 0) {
      axisOutMsgCtx.setProperty(SynapseConstants.SEND_TIMEOUT, endpoint.getTimeoutDuration());
    }

    // always set a callback as we decide if the send it blocking or non blocking within
    // the MEP client. This does not cause an overhead, as we simply create a 'holder'
    // object with a reference to the outgoing synapse message context
    // synapseOutMessageContext
    AsyncCallback callback = new AsyncCallback(axisOutMsgCtx, synapseOutMessageContext);
    if (!outOnlyMessage) {
      if (endpoint != null) {
        // set the timeout time and the timeout action to the callback, so that the
        // TimeoutHandler can detect timed out callbacks and take approprite action.
        callback.setTimeOutOn(System.currentTimeMillis() + endpoint.getTimeoutDuration());
        callback.setTimeOutAction(endpoint.getTimeoutAction());
      } else {
        callback.setTimeOutOn(System.currentTimeMillis());
      }
    }
    mepClient.setCallback(callback);
    //
    //        if (Utils.isClientThreadNonBlockingPropertySet(axisOutMsgCtx)) {
    //            SynapseCallbackReceiver synapseCallbackReceiver = (SynapseCallbackReceiver)
    // axisOutMsgCtx.getAxisOperation().getMessageReceiver();
    //            synapseCallbackReceiver.addCallback(axisOutMsgCtx.getMessageID(), new
    // FaultCallback(axisOutMsgCtx, synapseOutMessageContext));
    //        }

    // this is a temporary fix for converting messages from HTTP 1.1 chunking to HTTP 1.0.
    // Without this HTTP transport can block & become unresponsive because we are streaming
    // HTTP 1.1 messages and HTTP 1.0 require the whole message to caculate the content length
    if (originalInMsgCtx.isPropertyTrue(NhttpConstants.FORCE_HTTP_1_0)) {
      synapseOutMessageContext.getEnvelope().toString();
    }

    // with the nio transport, this causes the listener not to write a 202
    // Accepted response, as this implies that Synapse does not yet know if
    // a 202 or 200 response would be written back.
    originalInMsgCtx
        .getOperationContext()
        .setProperty(org.apache.axis2.Constants.RESPONSE_WRITTEN, "SKIP");

    // if the transport out is explicitly set use it
    Object o = originalInMsgCtx.getProperty("TRANSPORT_OUT_DESCRIPTION");
    if (o != null && o instanceof TransportOutDescription) {
      axisOutMsgCtx.setTransportOut((TransportOutDescription) o);
      clientOptions.setTransportOut((TransportOutDescription) o);
      clientOptions.setProperty("TRANSPORT_OUT_DESCRIPTION", o);
    }

    mepClient.execute(true);
    if (wsRMEnabled) {
      Object rm11 = clientOptions.getProperty(SandeshaClientConstants.RM_SPEC_VERSION);
      if ((rm11 != null) && rm11.equals(Sandesha2Constants.SPEC_VERSIONS.v1_1)) {
        ServiceClient serviceClient =
            new ServiceClient(
                axisOutMsgCtx.getConfigurationContext(), axisOutMsgCtx.getAxisService());
        serviceClient.setTargetEPR(
            new EndpointReference(endpoint.getAddress(synapseOutMessageContext)));
        serviceClient.setOptions(clientOptions);
        serviceClient
            .getOptions()
            .setTo(new EndpointReference(endpoint.getAddress(synapseOutMessageContext)));
        SandeshaClient.terminateSequence(serviceClient);
      }
    }
  }