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From "Stadelmann Josef" <josef.stadelm...@axa-winterthur.ch>
Subject AW: AW: AW: axis2 session scopes
Date Mon, 31 Jan 2011 13:34:09 GMT
Hi 

 

I am a bit confused about what you really want to do. But since you know now better what you can do please explain it again.


Why scope="transportsession" ? Why not scope="Soapsession"? Why scope="application"? Why not scope="requestsession"?

 

Now to your recent mail.

If you have the JSESSIONID=… returned by your first response header, then the client code needs to send it back with each request !

Why else should the server return this cookie? Think behind. What is the servers expectation or aim to return this cookie to the client? 

 

Next: How can you make your client resend this cookie with each request, given the client has to belong to the same session, 

. . . . . however you define a session might be another topic to discuss.

 

Answer: it depends on the client platform

For MS WCF Clients you need to have HttpTransportElement.AllowCookies  = true AND

For Java Axis2 Clients you do so as Deepal said below : 

when you use transport session you are required to send the cookies, which can also be done by setting the above property.

The cookie is to be re-sent because you don’t get back from the server an servicegroupId : Look further down.

 

How do you massage your http header: for MS .NET WCF Clients using C# language

 

I am using my own custom binding; A binding is a collection of Binding Elements (see MS MFC .NET documentation for that if required.

            // 6.

            // Create a Binding Element for the required Transport and define the proxy for TCP Monitoring

            //                                           *************************************************

            HttpTransportBindingElement httpTransportBE = new HttpTransportBindingElement();

            httpTransportBE.AllowCookies = true;

            //httpTransport.KeepAliveEnabled = false;

            

            if (theProxyAddress.Length > 0)

            {

                httpTransportBE.UseDefaultWebProxy = false;

                httpTransportBE.ProxyAddress = new Uri(theProxyAddress);

            } else {

                httpTransportBE.UseDefaultWebProxy = true;

            }

 

            //httpTransportBE.AuthenticationScheme = System.Net.AuthenticationSchemes.Anonymous;

            //httpTransportBE.AuthenticationScheme = AuthenticationSchemes.Negotiate;

            //httpTransportBE.BypassProxyOnLocal = true;

            //httpTransportBE.HostNameComparisonMode = HostNameComparisonMode.StrongWildcard;

            //httpTransportBE.ManualAddressing = true;

            //httpTransportBE.MaxBufferPoolSize = 4578812;

            //httpTransportBE.MaxBufferSize = 45787;

            //httpTransportBE.MaxReceivedMessageSize = 1245786;

            //httpTransportBE.ProxyAuthenticationScheme = AuthenticationSchemes.Negotiate;

            //httpTransportBE.Realm = "";

            //httpTransportBE.TransferMode = TransferMode.Streamed;

            //httpTransportBE.UnsafeConnectionNtlmAuthentication = true;

 

Later down in a method used to Authenticate I am about to massage my http header …

 

 

        public TWS Authenticate(TWS wsinp, TWS wsout)

        {

            // output data from server

            string token = "";

            TPAYLOAD payout = new TPAYLOAD();

 

            // input data to server

            TPAYLOAD payin = new TPAYLOAD("SPS-Payload");

 

            TWSCOL wscol = new TWSCOL("wscol");

            payin.wscol = wscol;

 

            wscol.Add(wsinp);

 

            string userId = wsinp.eRet("USERNAME");

            string password = wsinp.get_Item("PASSWORD").Fldval.ToString();

 

            wscol.Add(wsout);

 

            using (OperationContextScope scope = new OperationContextScope((IContextChannel)FKTmapManagerChannel))

            {

                //try

                //{

                HttpRequestMessageProperty reqProp;

                if (OperationContext.Current.OutgoingMessageProperties.Count == 0)

                {

                    reqProp = new HttpRequestMessageProperty();

                    OperationContext.Current.OutgoingMessageProperties.Add(HttpRequestMessageProperty.Name, reqProp);

                }

                else

                {

                    reqProp = OperationContext.Current.OutgoingMessageProperties[HttpRequestMessageProperty.Name] as HttpRequestMessageProperty;

                }

                char quote = '"';

                string strContentType = "application/soap+xml; charset=UTF-8; action=" + quote + "urn:login" + quote;

                reqProp.Headers.Add(HttpRequestHeader.ContentType, strContentType);

                reqProp.Headers.Add(HttpRequestHeader.UserAgent, "Axis2");

                reqProp.Headers.Add(HttpRequestHeader.TransferEncoding, "chunked");

                //reqProp.Headers.Add(HttpRequestHeader.Host, "alpha1:54887");

 

                string cT = reqProp.Headers[HttpRequestHeader.ContentType];

                string uA = reqProp.Headers[HttpRequestHeader.UserAgent];

                string tE = reqProp.Headers[HttpRequestHeader.TransferEncoding];

                //string hO = reqProp.Headers[HttpRequestHeader.Host];

                Console.WriteLine();

                Console.WriteLine("ProcessMessage: Content-Type: {0} User-Agent: {1} Transfer-Encoding:{2}", cT, uA, tE);

                //}

                //catch (Exception e)

                //{

                //    Console.WriteLine("ProcessMessage: got exception: " + e.ToString());

                //}

                if (FKTmapManagerChannel.Authenticate(out token, out payout, userId, password, payin))

                {

                    // Save context information for re use. This information will be used by the 

                    // ClientMessageInspector class to inject the Token to the headers along with each request.

                    ClientContext.UserId = userId;

                    ClientContext.Token = token;

 

                    //safe the ClientContext to our own instance based context

                    getClientContext();

                    // Authenticate returns headers we must keep for each fktmap and logout

 

            }

                if (payout == null) return wsinp;

                return payout.wscol.get_Item("wsout");

            }

        }

 

 

This is what you need to make your axis2 engine think in scope="soapsession" that the requestor (the UserAgent) is an axis2-client.

 

So again: it is simple to make axis2-client work in scope="soapsession" to always reach the same instance by turning the proper options on. It is much more problematic to make a MS C# WCF Client talk properly to an axis2 service in scope="soapsession".

 

Well here comes my Test Java Axis2 Client Program which works in scope="soapsession", which I use from my PC to test my axis2 web service running on OpenVMS in scope="soapsession"

I can run this program 5 times and I have 5 service objects instantiated and each program talks to its instantiated unique service providing object. 5 user client session threads ending each at its unique session thread object. Through this service providing objects in role of a place holder for a 5 legacy server processes my client thread talks to a dedicated openvms legacy process.

 

As Deepal said: you need to engage addressing.mod on the client (as shown in code) and on the server (not shown here)

 

/*

* SOAPSpezplaClient.java

*

* Created on 27. Juni 2007, 10:13

*/

 

package axawl.spezpla.clients;

 

import org.apache.axiom.om.OMNode;

import org.apache.axiom.om.OMElement;

 

import org.apache.axiom.om.xpath.AXIOMXPath;

import org.apache.axiom.om.impl.builder.StAXOMBuilder;

import org.jaxen.JaxenException;

import javax.xml.stream.XMLStreamException;

import java.io.FileNotFoundException;

import java.util.List;

 

 

 

/**

*

* @author  C770817

*/

import org.apache.axis2.context.ConfigurationContext;

import org.apache.axis2.context.ConfigurationContextFactory;

import org.apache.axis2.deployment.FileSystemConfigurator;

import org.apache.axis2.engine.AxisConfiguration;

import org.apache.axis2.AxisFault;

import org.apache.axis2.Constants;

import org.apache.axis2.addressing.EndpointReference;

import org.apache.axis2.client.*;

import org.apache.axis2.rpc.client.*;

 

 

import org.apache.axiom.soap.impl.llom.soap12.SOAP12Factory;

import org.apache.axiom.soap.SOAPFactory;

import org.apache.axiom.soap.SOAPEnvelope;

import org.apache.axiom.soap.SOAPHeader;

import org.apache.axiom.soap.SOAPHeaderBlock;

import org.apache.axiom.soap.SOAPBody;

import org.apache.axiom.soap.SOAPFault;

 

import org.apache.axiom.om.OMAbstractFactory;

import org.apache.axiom.om.OMFactory;

import org.apache.axiom.om.OMNamespace;

import org.apache.axiom.om.OMElement;

import org.apache.axiom.om.OMText;

import org.apache.axiom.om.xpath.AXIOMXPath;

import org.apache.axiom.om.xpath.DocumentNavigator;

import org.apache.axiom.om.util.XPathEvaluator;

import org.apache.axiom.om.impl.llom.util.AXIOMUtil;

 

import javax.xml.stream.FactoryConfigurationError;

import javax.xml.stream.XMLOutputFactory;

import javax.xml.stream.XMLStreamException;

import javax.xml.stream.XMLStreamWriter;

 

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.xpath.XPathConstants;

 

import javax.xml.namespace.QName;

 

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

 

import java.io.File;

import java.io.FileNotFoundException;

 

import java.util.*;

 

/**

* This is a Client progam that accesses 'SpezplaService' web service in Axis2 samples

*/

public class SOAPSpezplaClient {

    

    private static final Log log = LogFactory.getLog(SOAPSpezplaClient.class);

    

    private static String toEpr = "http://integ1:8080/axis2/services/SpezplaService";

    

    private static int i = 0;

    private static Integer intObj = new Integer(i);

    

    public static void main(String[] args) throws AxisFault {

        

        try {

            

            Options options = new Options();

            options.setManageSession(true);

            options.setTo(new EndpointReference(toEpr));

            options.setTransportInProtocol(Constants.TRANSPORT_HTTP);

            

            //options.setProperty(Constants.Configuration.ENABLE_REST, Constants.VALUE_TRUE);

            

            /**

             * on OpenVMS user.home  is dsa5:[stadelma]

             * on windows user.home  is C:\Documents and Settings\c770817

             **/

            String home = System.getProperty("user.home");

            // create this folder at your home. This folder could be anything

            //then create the "modules" folder

            //copy the LoggingModule.mar to "modules" folder.

            //copy the axis2.xml to the client-repository

            //then modify the axis2.xml that is generating there according to

            //phases that being included in the "module.xml"

            

            /**

             * on OpenVMS repository is dsa5:[stadelma.client-repository]

             * on windows repository is C:\Documents and Settings\c770817\client-repository

             **/

            File repository = new File(home + File.separator + "client-repository");

            if (!repository.exists()) {

                throw new FileNotFoundException(repository.getAbsolutePath() + " does not Exist");

            };

            

            String str_axis2xml = repository.getAbsolutePath() + File.separator + "axis2.xml";

            File axis2_xml = new File(str_axis2xml);

            if (!axis2_xml.exists()) {

                throw new FileNotFoundException(axis2_xml.getAbsolutePath() + " does not Exist");

            };

            

            FileSystemConfigurator fsc = new FileSystemConfigurator(

                    repository.getAbsolutePath(),

                    axis2_xml.getAbsolutePath());

            

            AxisConfiguration er = fsc.getAxisConfig();

            

            ConfigurationContext configContext =

                    ConfigurationContextFactory.createConfigurationContextFromFileSystem(

                    repository.getAbsolutePath(),

                    axis2_xml.getAbsolutePath()

                    );

            

            

            //ServiceClient sender = new ServiceClient();

            ServiceClient sender = new ServiceClient(configContext,null);

            

            //sender.engageModule(new QName(Constants.MODULE_LOGGING));

            sender.engageModule(new QName("SpezplaLogging-1.2"));

            

            sender.engageModule(new QName(Constants.MODULE_ADDRESSING));

            //sender.engageModule(new QName("addressing-1.2"));

            

            //sender.engageModule(new QName(Constants.MODULE_SOAPMONITOR));

            sender.engageModule(new QName("soapmonitor-1.2"));

            

            

            options.setSoapVersionURI(org.apache.axiom.soap.SOAP12Constants.SOAP_ENVELOPE_NAMESPACE_URI);

            

            

            // invoke the start method first using it's StartPaylod

            options.setAction("urn:login");

            sender.setOptions(options);

            

            OMElement element = getLoginPayload(0);

            

            /** now we know we can potentially succeed to create a OpenVmsLogin(u,p) **/

            

            OMElement start = sender.sendReceive(element);

            // from now on use this sender so that WS-address stuff i.e. ServiceGroupeContextID info is sent

            // where in the dark of the code is that?

            

            

            String s = intObj.toString(i);

            System.out.print("No"+s);

            

            XMLStreamWriter startWriter = XMLOutputFactory.newInstance().createXMLStreamWriter(System.out);

            start.serialize(startWriter);

            startWriter.flush();                // write every-thing out

            System.out.println("");             // and add a CRLF

            

            

            

            

            options.setAction("urn:fktmap");

            sender.setOptions(options);

            

            OMElement result = sender.sendReceive(getFktmapPayload(50));

            

            for(int i=0;i<100;i++){

                

                result = sender.sendReceive(getFktmapPayload_FKT_BATCH_LOG(20));

                

                Thread.sleep(40000);

                

                s = intObj.toString(i);

                System.out.println("No"+s);

                

//                XMLStreamWriter writer = XMLOutputFactory.newInstance().createXMLStreamWriter(System.out);

//                result.serialize(writer);

//                writer.flush();               // write every-thing out

//                System.out.println("");       // and add a CRLF

                

                if (i==100){

                    System.gc();    // do an explicit Garbage Collection and get it all back

                }

                if (0 == i % 100){

                    System.gc();    // do an explicit Garbage Collection once evry 100 loops-through

                }

            } // end-for - so do a cleanup now to give up sender resource

            

            // invoke the logout method

            options.setAction("urn:logout");

            sender.setOptions(options);

            

            result = sender.sendReceive(getLogoutPayload(0));

            //sender.fireAndForget(getLogoutPayload());

            // from now on use this sender so that WS-address stuff i.e. ServiceGroupeContextID info is sent

            // where in the dark of the code is that?

            

            

            /**

             * We have to block this thread untill we send the request , the problem

             * is if we go out of the main thread , then request wont send ,so

             * you have to wait some time :)

             */

            Thread.sleep(2500);

            

            /**

             * s = intObj.toString(i);

             * System.out.print("No"+s);

             *

             * XMLStreamWriter pingWriter = XMLOutputFactory.newInstance().createXMLStreamWriter(System.out);

             * ping.serialize(startWriter);

             * pingWriter.flush();                // write every-thing out

             * System.out.println("");             // and add a CRLF

             **/

            sender.cleanup();   // return resources .finalize would do more but is protected

            

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        } catch (XMLStreamException e) {

            e.printStackTrace();

        } catch (FactoryConfigurationError e) {

            e.printStackTrace();

        } catch (java.lang.Exception e) {

            e.printStackTrace();

        }

    }

    

    private static OMElement getLoginPayload(int lc) {

       . . . .

        return envelope;

    }

    

    private static OMElement getFktmapPayload(int lc) {

       . . . .

        return envelope;

    }

    

    

    private static OMElement getFktmapPayload_FKT_BATCH_LOG(int lc) {

        

        int i = lc;

        Integer intObj = new Integer(i);

        

        String sDate = new Date().toString();

        

        OMFactory fac = OMAbstractFactory.getOMFactory();

        

        

        OMNamespace ns_axawl = fac.createOMNamespace("http://spezpla.axawl.ch","");

        OMNamespace schemaInstance = fac.createOMNamespace("http://www.w3.org/2001/XMLSchema-instance", "i");

        OMNamespace spsPayload = fac.createOMNamespace("SPS-Payload", "b");

        OMNamespace col = fac.createOMNamespace("COL", "c");

        OMNamespace dc = fac.createOMNamespace("http://schemas.datacontract.org/2004/07/WCFSpSe", "d");

        OMNamespace ws = fac.createOMNamespace("WS", "e");

        OMNamespace f = fac.createOMNamespace("feld", "f");

        

        SOAP12Factory sfac = new SOAP12Factory();

        SOAPEnvelope envelope = sfac.getDefaultEnvelope();

        SOAPHeader header = envelope.getHeader();

        SOAPBody body = envelope.getBody();

        

        try {

            

            // create an fktmap Payload"

            OMElement root = fac.createOMElement("fktmap",null);

            root.declareNamespace(ns_axawl);

            

            OMElement payin = fac.createOMElement("payin",null);

            payin.declareNamespace(spsPayload);

            payin.declareNamespace(schemaInstance);

            root.addChild(payin);

            

            OMElement b_name = fac.createOMElement("Name",spsPayload);

            OMText txt1 = fac.createOMText(b_name,"SPS-Payload");

            payin.addChild(b_name);

            

            OMElement b_wscol = fac.createOMElement("wscol",spsPayload);

            b_wscol.declareNamespace("COL", "c");

            payin.addChild(b_wscol);

            

            OMElement c_name = fac.createOMElement("Name",col);

            OMText txt2 = fac.createOMText(c_name,"wscol");

            b_wscol.addChild(c_name);

            

            OMElement c_Item = fac.createOMElement("Item",col);

//            c_Item.declareNamespace("http://schemas.datacontract.org/2004/07/WCFSpSe", "d");

            c_Item.declareNamespace(dc);

            c_Item.declareNamespace(ws);

            b_wscol.addChild(c_Item);

            

            

            

            

            // wsinp

            OMElement d_TWS = fac.createOMElement("TWS",dc);

            c_Item.addChild(d_TWS);

            

            OMElement e_name = fac.createOMElement("Name",ws);

            OMText txt3 = fac.createOMText(e_name,"wsinp");

            d_TWS.addChild(e_name);

            

            OMElement e_Item = fac.createOMElement("Item",ws);

            e_Item.declareNamespace("feld","f");

            d_TWS.addChild(e_Item);

            

//            for(i=0;i<4;i++){

            OMElement d_TELEM = fac.createOMElement("TELEM",dc);

            e_Item.addChild(d_TELEM);

            

            OMElement f_fldnam = fac.createOMElement("Fldnam",f);

            OMText txt4 = fac.createOMText(f_fldnam,"TARGET");

            d_TELEM.addChild(f_fldnam);

            

            OMElement f_fldval = fac.createOMElement("Fldval",f);

            OMText txt5 = fac.createOMText(f_fldval,"FKT_PUTFILE");

            d_TELEM.addChild(f_fldval);

//            }

            

            d_TELEM = fac.createOMElement("TELEM",dc);

            e_Item.addChild(d_TELEM);

            

            f_fldnam = fac.createOMElement("Fldnam",f);

            txt4 = fac.createOMText(f_fldnam,"FILENAME");

            d_TELEM.addChild(f_fldnam);

            

            f_fldval = fac.createOMElement("Fldval",f);

            txt5 = fac.createOMText(f_fldval,"SYS$LOGIN:SPEZPLA.LOG");

            d_TELEM.addChild(f_fldval);

            

            

            d_TELEM = fac.createOMElement("TELEM",dc);

            e_Item.addChild(d_TELEM);

            

            f_fldnam = fac.createOMElement("Fldnam",f);

            txt4 = fac.createOMText(f_fldnam,"MORE");

            d_TELEM.addChild(f_fldnam);

            

            f_fldval = fac.createOMElement("Fldval",f);

            txt5 = fac.createOMText(f_fldval,"FALSE");

            d_TELEM.addChild(f_fldval);

            

            

            d_TELEM = fac.createOMElement("TELEM",dc);

            e_Item.addChild(d_TELEM);

            

            f_fldnam = fac.createOMElement("Fldnam",f);

            txt4 = fac.createOMText(f_fldnam,"START");

            d_TELEM.addChild(f_fldnam);

            

            f_fldval = fac.createOMElement("Fldval",f);

            txt5 = fac.createOMText(f_fldval,"1");

            d_TELEM.addChild(f_fldval);

            

            

            d_TELEM = fac.createOMElement("TELEM",dc);

            e_Item.addChild(d_TELEM);

            

            f_fldnam = fac.createOMElement("Fldnam",f);

            txt4 = fac.createOMText(f_fldnam,"LAENGE");

            d_TELEM.addChild(f_fldnam);

            

            f_fldval = fac.createOMElement("Fldval",f);

            txt5 = fac.createOMText(f_fldval,intObj.toString());

            d_TELEM.addChild(f_fldval);

            

            

            // wsold

            d_TWS = fac.createOMElement("TWS",dc);

            c_Item.addChild(d_TWS);

            

            e_name = fac.createOMElement("Name",ws);

            txt3 = fac.createOMText(e_name,"wsold");

            d_TWS.addChild(e_name);

            

            e_Item = fac.createOMElement("Item",ws);

            e_Item.declareNamespace("feld","f");

            d_TWS.addChild(e_Item);

            

            

            // wsout

            d_TWS = fac.createOMElement("TWS",dc);

            c_Item.addChild(d_TWS);

            

            e_name = fac.createOMElement("Name",ws);

            txt3 = fac.createOMText(e_name,"wsout");

            d_TWS.addChild(e_name);

            

            e_Item = fac.createOMElement("Item",ws);

            e_Item.declareNamespace("feld","f");

            d_TWS.addChild(e_Item);

            

            

            return root;

            

        } catch (Exception ex) {

            ex.printStackTrace();

            System.out.println("Unknown Java exception took place within the client.");

        }

        return envelope;

    }

    

    private static OMElement getLogoutPayload(int lc) {

        

        int i = 0;

        Integer intObj = new Integer(i);

        

        String sDate = new Date().toString();

        

        OMFactory fac = OMAbstractFactory.getOMFactory();

        

        

        OMNamespace ns_axawl = fac.createOMNamespace("http://spezpla.axawl.ch","");

        OMNamespace schemaInstance = fac.createOMNamespace("http://www.w3.org/2001/XMLSchema-instance", "i");

        OMNamespace spsPayload = fac.createOMNamespace("SPS-Payload", "b");

        OMNamespace col = fac.createOMNamespace("COL", "c");

        OMNamespace dc = fac.createOMNamespace("http://schemas.datacontract.org/2004/07/WCFSpSe", "d");

        OMNamespace ws = fac.createOMNamespace("WS", "e");

        OMNamespace f = fac.createOMNamespace("feld", "f");

        

        SOAP12Factory sfac = new SOAP12Factory();

        SOAPEnvelope envelope = sfac.getDefaultEnvelope();

        SOAPHeader header = envelope.getHeader();

        SOAPBody body = envelope.getBody();

        

        try {

            

            // create an fktmap Payload"

            OMElement root = fac.createOMElement("logout",null);

            root.declareNamespace(ns_axawl);

            

            OMElement payin = fac.createOMElement("payin",null);

            payin.declareNamespace(spsPayload);

            payin.declareNamespace(schemaInstance);

            root.addChild(payin);

            

            OMElement b_name = fac.createOMElement("Name",spsPayload);

            OMText txt1 = fac.createOMText(b_name,"SPS-Payload");

            payin.addChild(b_name);

            

            OMElement b_wscol = fac.createOMElement("wscol",spsPayload);

            b_wscol.declareNamespace("COL", "c");

            payin.addChild(b_wscol);

            

            OMElement c_name = fac.createOMElement("Name",col);

            OMText txt2 = fac.createOMText(c_name,"wscol");

            b_wscol.addChild(c_name);

            

            OMElement c_Item = fac.createOMElement("Item",col);

//            c_Item.declareNamespace("http://schemas.datacontract.org/2004/07/WCFSpSe", "d");

            c_Item.declareNamespace(dc);

            c_Item.declareNamespace(ws);

            b_wscol.addChild(c_Item);

            

            

            

            

            // wsinp

            OMElement d_TWS = fac.createOMElement("TWS",dc);

            c_Item.addChild(d_TWS);

            

            OMElement e_name = fac.createOMElement("Name",ws);

            OMText txt3 = fac.createOMText(e_name,"wsinp");

            d_TWS.addChild(e_name);

            

            OMElement e_Item = fac.createOMElement("Item",ws);

            e_Item.declareNamespace("feld","f");

            d_TWS.addChild(e_Item);

            

//            for(i=0;i<4;i++){

            OMElement d_TELEM = fac.createOMElement("TELEM",dc);

            e_Item.addChild(d_TELEM);

            

            OMElement f_fldnam = fac.createOMElement("Fldnam",f);

            OMText txt4 = fac.createOMText(f_fldnam,"TARGET");

            d_TELEM.addChild(f_fldnam);

            

            OMElement f_fldval = fac.createOMElement("Fldval",f);

            OMText txt5 = fac.createOMText(f_fldval,"FKT_BYE");

            d_TELEM.addChild(f_fldval);

//            }

            

            d_TELEM = fac.createOMElement("TELEM",dc);

            e_Item.addChild(d_TELEM);

            

            f_fldnam = fac.createOMElement("Fldnam",f);

            txt4 = fac.createOMText(f_fldnam,"SELECT");

            d_TELEM.addChild(f_fldnam);

            

            f_fldval = fac.createOMElement("Fldval",f);

            txt5 = fac.createOMText(f_fldval,"");

            d_TELEM.addChild(f_fldval);

            

            

            return root;

            

        } catch (Exception ex) {

            ex.printStackTrace();

            System.out.println("Unknown Java exception took place within the client.");

        }

        return envelope;

    }

        

    private static OMElement setErrorInElement(int SCODE, String ERRMSG, int SCODE2, String ERRMSG2, String COMPLETION) {

        

        Integer scode = new Integer(SCODE);

        Integer scode2= new Integer(SCODE2);

        

        OMFactory fac = OMAbstractFactory.getOMFactory();

        

        OMNamespace spspl = fac.createOMNamespace("SPS-Payload", "b");

        OMNamespace col = fac.createOMNamespace("COL", "c");

        OMNamespace ws = fac.createOMNamespace("WS", "d");

        OMNamespace e = fac.createOMNamespace("feld", "e");

        

        SOAP12Factory sfac = new SOAP12Factory();

        SOAPEnvelope envelope = sfac.getDefaultEnvelope();

        SOAPHeader header = envelope.getHeader();

        SOAPBody body = envelope.getBody();

        

        try {

            

            // create a Payload collection "SPS-Payload"

            OMElement root = fac.createOMElement("root",spspl);

            root.declareNamespace(col);

            root.declareNamespace(ws);

            root.declareNamespace(e);

            

            // create a workspace collection "col"

            OMElement wscol = fac.createOMElement("col",col);

            

            root.addChild(wscol);

            

            // create the workspace "wsout"

            OMElement wsout = fac.createOMElement("wsout",ws);

            

            // add the workspace "wsout" to the workspace collection "wscol"

            wscol.addChild(wsout);

            

            OMElement fldnam = fac.createOMElement("SCODE",e);

            // create fldval as "FKT_WMBCREATE" and link it to fldnam

            OMText fldval = fac.createOMText(fldnam,scode.toString());

            // add the workspace element TARGET to the workspace wsinp

            wsout.addChild(fldnam);

            

            // wsout.add("ERRMSG","")

            fldnam = fac.createOMElement("ERRMSG",e);

            fldval = fac.createOMText(fldnam,ERRMSG);

            wsout.addChild(fldnam);

            

            // wsout.add("SCODE2",SCODE2)

            fldnam = fac.createOMElement("SCODE2",e);

            fldval = fac.createOMText(fldnam,scode2.toString());

            wsout.addChild(fldnam);

            

            // wsout.add("ERRMSG2",ERRMSG2)

            fldnam = fac.createOMElement("ERRMSG2",e);

            fldval = fac.createOMText(fldnam,ERRMSG2);

            wsout.addChild(fldnam);

            

            // wsout.add("COMPLETION",COMPLETION)

            fldnam = fac.createOMElement("COMPLETION",e);

            fldval = fac.createOMText(fldnam,COMPLETION);

            wsout.addChild(fldnam);

            

            body.addChild(root);

            

            return root;

            

        } catch (Exception ex) {

            ex.printStackTrace();

            System.out.println("Unknown Java exception took place within the client.");

        }

        return envelope;

    }

    

    private static String getUsername(OMElement element){

        try {

            /**

             * -TODO--

             * deliver Username in a encrypted form; i.e. use a UUID

             * better use Rampart and a WS-Security Modell / Policy over

             * Transport Level Security such as HTTPS

             **/

            AXIOMXPath wPath = new AXIOMXPath("/*"); // this is used to find out about the root name spaces etc

            OMElement r = (OMElement) wPath.selectSingleNode(element);

            String s =    " getUsername() xmlns="+r.getNamespace().getPrefix().toString()+"="+r.getNamespace().getNamespaceURI().toString();

            log.info(s);

            

            

//          AXIOMXPath xPath = new AXIOMXPath("/*); // this is used to find out about the root name spaces etc

            AXIOMXPath xPath = new AXIOMXPath("/soapenv:Body/b:root/c:col/d:wsinp/e:USERNAME");

            xPath.addNamespace("soapenv","http://www.w3.org/2003/05/soap-envelope");

//            xPath.addNamespace("wsa","http://www.w3.org/2005/08/addressing");

            xPath.addNamespace("b","SPS-Payload");

            xPath.addNamespace("c","COL");

            xPath.addNamespace("d","WS");

            xPath.addNamespace("e","feld");

            

            OMElement user = (OMElement) xPath.selectSingleNode(element);

            return user.getText();

            

        } catch (JaxenException e) {

            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.

        }

        return "";

    }

    

    private static String getPassword(OMElement element){

        try {

            /**

             * -TODO--

             * deliver Password in a encrypted form; i.e. use a UUID

             * better use Rampart and a WS-Security Modell / Policy over

             * Transport Level Security such as HTTPS

             **/

//              AXIOMXPath xPath = new AXIOMXPath("/*); // this is used to find out about the root name spaces etc

            AXIOMXPath xPath = new AXIOMXPath("/soapenv:Body/b:root/c:col/d:wsinp/e:PASSWORD");

            xPath.addNamespace("soapenv","http://www.w3.org/2003/05/soap-envelope");

//            xPath.addNamespace("wsa","http://www.w3.org/2005/08/addressing");

            xPath.addNamespace("b","SPS-Payload");

            xPath.addNamespace("c","COL");

            xPath.addNamespace("d","WS");

            xPath.addNamespace("e","feld");

            

            OMElement pass = (OMElement) xPath.selectSingleNode(element);

            return pass.getText();

            

        } catch (JaxenException e) {

            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.

        }

        return "";

    }

    

}

 

 

This client code is old – it would be designed and re-factored in a much better way today; 

I was a Java novice when I developed it 4 years ago, but I am still happy with it, as it is straight forward spaghetti code easy to understand.

 

Please explain me again what you like to do. 

I gave you how to make it work in a heterogeneous environment as well as in a homogeneous world (Java) to work in scope="soapsession".

 

If you want to work in scope="transportsession" then please say why?

 

use tcpmonitor all time to see what client and server is exchanging !

 

Josef.Stadelmann

@axa-winterthur.ch

 

 

 

 

 

 

Von: am am [mailto:akmeref@yahoo.com] 
Gesendet: Donnerstag, 27. Januar 2011 18:00
An: java-user@axis.apache.org
Betreff: Re: AW: AW: axis2 session scopes

 

Hi Josef,
Thank you very much for your time spend in helping me understand this. The analysis was great!
I followed your tip, and tried to use tcpmon on transportsession but I saw that the only session info send to client was the JSESSIONID in the cookie (which is defined in sevlet spec). I.e. The HTTP response was this:
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID=1CE110EACECC0AE176C6610DA81D0446; Path=/axis2
Content-Type: text/xml;charset=UTF-8
Transfer-Encoding: chunked
Date: Thu, 27 Jan 2011 16:49:43 GMT

f3
10
0

So I am not sure how you worked arround this, in the example you mention on the MS WFC Client. You note:
>>Sending the request later by MS WCF Client without that cookie did not work. 

>>I hade to add to the http-header all the same bit's as the axis2 java client was sending in scope="soapsession". 

 

But I do not know how you got that info to send it. In the reply in my test, there is only the JSESSIONID send back to the client. And if I make a web service invocation by different instances of web service client, the object is re-instantiated on the server.

Thank you!!!

 

________________________________

From: Stadelmann Josef <josef.stadelmann@axa-winterthur.ch>
To: java-user@axis.apache.org
Sent: Thu, January 27, 2011 12:29:50 PM
Subject: AW: AW: axis2 session scopes

To my understanding, the trick with servicegroupId in the soap address header  makes only real sense in scope="soapsession".

 

Given we can have several transports one being http, another being RPC or JSM or whatever, I would want to have a solution selecting my service instance independent from transport protocol used. So I should avoid managing it on the transport level.

 

Managing how to reach the service providing object (instance) for a particular user session thread should go in my mind only to the SOAP/XML stack and avoid any transport level inclusion/cluttering.

 

That is the reason why I selected long lasting objects and have one user session thread ending in a instance of a service-class (an object) which gets is message via web service facilities. (just my view). And it works perfect, without any big overhead. It was that decision which allowed us to see an web service providing object as a holder of a HP-WSIT-JAVABEAN which keeps the IPC channel open (to send data from Java to the C-Wrapper-World) to an OpenVMS legacy process 80'000 LOC's of PASCAL plus Oracle DB. Saying, we have to integrate and speak to legacy server processes on a  per user session thread basis. (which is overhead I know, but we do legacy-integration, and many old process is just not multi-threaded, or thread aware).

 

As long as a users client  keeps the session/thread open to the service providing object, as long will each message reach the same object identified by the servicegroupId. (think of the servicegroupId as of an "object-identifier" very similar to an IOR in the CORBA world).

 

It's the server which must give you this object reference, and it's the responsibility of the client to re-use/re-ship  it with each request to the axis2 engine to reach "the object".

 

 

What is a transport session? When does the transport session start and when does it end?

Now comes my weak bit! I never used scope="transportsession" So I have read this excellent article.

http://www.developer.com/open/print.php/3620661

(do me a favor and forget about the space in the scope="   transportsession" as shown in the article, 
as it may lead to problems (somewhere there is a scope dispatcher in java if scope.compare("soapsession") then …-

so he looks at strings very carefully :-))

 

Given a user client has several transport sessions open, how does it chose about which one to use? Maybe you have 3 stubs?

 

Manage sessions by transport means: 

Articel: 

The lifetime of the session is controlled by the transport, not by Axis2;

If axis2 has no control over the session then we need to have our service instance identifying bits located somewhere else, maybe on the transport level, maybe inside the http-header, but for sure not a the soap/xml protocol level; 

 

So it's very likely that a cookie is used for that service instance, and that the axis2 server has to return the cookie to the client as it creates the service instance, a cookie the client has to re-use again to hit the same service instance.

(very much like an IOR in CORAB)  

That is when you have to start massaging your http header in the client and sniff in  a cookie; 

and you do it at the transport level and not at the soap/xml header. 

 

Article: 

One of the key advantages of the Transport session over other sessions is that you can talk to multiple service groups within one transport session

Where is the identifying bit selecting the service group wanted?

 

 

My learning with scope="soapsession" and long lasting session was:

I had to implement a MS WCF Client talking to an Apache Axis2 web service server with long lasting sessions (state full service providing objects)!

I had to fake axis2! I had to give the axis2 engine what it needs to think that an axis2 client is talking. 

 

By a TCP Monitor or by Wireshark I figured out what axis2 engine expects. 

 

Observation, and not expected at all but it was there on the wire: a http cookie was sent by the axis2 client. 

 

Sending the request later by MS WCF Client without that cookie did not work. 

 

I hade to add to the http-header all the same bit's as the axis2 java client was sending in scope="soapsession". 

 

This http-header-massage in addition to the servicegroupId header on the soap/xml level made me build interceptors at the client which intercept each outgoing and incoming request, just to add/retrieve all required information to reuse them during the next send/request.

 

 

Josef

 

Von: am am [mailto:akmeref@yahoo.com] 
Gesendet: Mittwoch, 26. Januar 2011 17:50
An: java-user@axis.apache.org
Betreff: Re: AW: axis2 session scopes

 

Hi Josef, 
Thank you very much for the detailed analysis!!! Now it very clear in my mind.
This solves the soapsession.
I am wondering though, is the servicegroupId required in the transportsession as well?
In transport session, session info are send back-and-forth via cookies and so it is transparent to the programmer. The only thing needed is to setManageSession to true in client object.
At least this is what I understood from reading articles.
But trying it out, a new web service is created each time.
So now I am thinking if I need to send the servicegroupId in the transportsession as well.
- If yes, then how do I find it? Because the 

client.getServiceContext().getTargetEPR().getAllReferenceParameters().get(new QName("http://ws.apache.org/namespaces/axis2%22,%22ServiceGroupId"));

used for soapsession throws NPE for transportsession, which I guess makes sense since there is no addressing header in transportsession. But how do I find it, to send it in next request?
- If no, what am I doing wrong to observe this behavior? I.e. new instance of web service? I have set session to transportscope and the managesession to true in client. Isn't it enough?

Thanks!

 

 

________________________________

From: Stadelmann Josef <josef.stadelmann@axa-winterthur.ch>
To: java-user@axis.apache.org
Sent: Wed, January 26, 2011 11:44:53 AM
Subject: AW: axis2 session scopes

We use scope="soapsession" in the following case

 

A: we have 3 different client programs running from the same PC each with the same WS stub. 

 

B: Each one of the 3 client shall span one dedicated user session thread to a dedicated web service based object, which is an instance of your web service class.

(Think how a client-object finds its server-object via a strong link) cA talks to sA, cB talks to sB, cC talks to sC, but never cA talks to sB or sC. Just a 1 to 1 object relation.

 

B: By using scope="soapsession" the initial call of cA to the web service creates for our service class a web service object sA (as instance) and it returns a servicegroupId Header to the calling client cA.

 

C: The client cA is now required to send his received servicegroupId in the addressing header with each request to the axis2 engine which dispatches the request to sA

 

D: that way we can guarantee you that each users client session thread i.e. cA, reaches always the same service object (instance) sA

 

E: and by adjusting a timeout in the client and the server we have long lasting objects, client and server side, objects talking to each other for hours. And we have no need to re-establish for each request a new stub or a new service providing object.

 

 

Josef

 

Von: am am [mailto:akmeref@yahoo.com] 
Gesendet: Montag, 24. Januar 2011 17:47
An: java-user@axis.apache.org
Betreff: Re: axis2 session scopes

 

Ah, I see now.
So the idea is that either a single instance of a serviceClient is reused across calls or if new instances must be used it must be directed to the specific serviceGroupId. Right?
For soapSession scope as mentioned in the article we use the 

client.getServiceContext().getTargetEPR().getAllReferenceParameters().get(new QName("http://ws.apache.org/namespaces/axis2%22,%22ServiceGroupId"));

for transportSession what is the approach? The above method returns null (since there is no replyto header I guess) but on transport which is based on cookies, I set to client the managesession attribute to true, and still can not re-use session across different service clients objects. What is the approach on transport?

Thank you!

 

________________________________

From: Deepal jayasinghe <deepalk@gmail.com>
To: java-user@axis.apache.org
Sent: Sun, January 23, 2011 10:51:51 PM
Subject: Re: axis2 session scopes

The problem is not sending the servicegroupID or the session related information. When you keep sending request it always create a new instances, only way to stop is to copy the servicegroupID from the previous request and send it alone with the next request.

One another way to get this work is try following, then you will see the expected behavior.

ServiceClient client = new ServiceClient();
Options options = new Options();
options.setTo(new EndpointReference("http://127.0.0.1:8080/axis2/services/MyLittleWebService"));
options.setManageSession(true);
client.setOptions(opts);
client.invokeBlocking();
client.invokeBlocking();
client.invokeBlocking();

If we do the above, you only get one service instances.

Deepal

The article describes how to keep session, without needing to reuse the same ServiceClient object. I.e. keep session using different ServiceClient objects.
My question was, why is the web service class being re-instantiated for each web service invocation for ALL scopes except application.
I have configured client to manage session (and engaged addressing for soapsession) and the web service class keeps-on re-instantiated for each web service call. So, I am not having a problem on keeping/using session (I am using messageContext and serviceContext for session related data).
I can not understand why the web service class is re-instantiated.
Is this a bug in Axis2? If not, what is the logic for this? I think that for enterprise level application this is too costly.
Is some sample code needed for this?

Thank you

 

 

________________________________

From: Deepal jayasinghe <deepalk@gmail.com> <mailto:deepalk@gmail.com> 
To: java-user@axis.apache.org
Sent: Sun, January 23, 2011 10:25:50 PM
Subject: Re: axis2 session scopes

Now, I got the point. For that you need to try the following.

http://wso2.org/library/3184

Deepal

Hi Deepal,

I have tried all scopes. In client side I have set manage session to true.
For instance. I set the session scope in services.xml to "transportsession".
In the web service I use 
MessageContext messageContext = MessageContext.getCurrentMessageContext();
ServiceContext scontext = messageContext.getServiceContext();
To store values to last per session. e.g. 
scontext.setProperty("SUM","" + sum); and I re-use sum across invocations. 
Also in client I do:
ServiceClient client = new ServiceClient();
Options options = new Options();
options.setTo(new EndpointReference("http://127.0.0.1:8080/axis2/services/MyLittleWebService"));
options.setManageSession(true);
client.setOptions(opts);
I can see that the data I place in MessageContext persist across invocations but I also see that a new web service instance is created per invocation.  
So my question is, that the session data will persist but I should expect the web service to be re-instantiated per invocation?  
In the example of transport session I have in the web service:
public class MyLittleWebService{
    
    publicMyLittleWebService(){
        System.out.println("MyLittleService constructor called! New Instance created!");
    }

And the constructor is being called across all invocations for all types of session except application.  
So I understand I must use session data, but this is the expected behavior as well? Re-instantiate the WS per invocation? Isn't it expensive for enterprise level web services?
If I am confused on this, please help me out understand what am I doing wrong here.

Thank you

 

________________________________

From: Deepal Jayasinghe <deepal@opensource.lk> <mailto:deepal@opensource.lk> 
To: java-user@axis.apache.org
Sent: Sun, January 23, 2011 4:08:04 PM
Subject: Re: axis2 session scopes



On 1/23/2011 7:11 AM, am am wrote: 

I am starting on axis2 (1.5.4).
I am looking into the various session scopes for web services (request, soapsession etc).
By experimenting, I notice that in all scopes except the application scope, there is a new instance of my web service being created per service call.
Only by setting the scope to "application" in the services.xml, the web service is instantiated only once, and being re-used across all web service calls.
My testing for this, was actually a print statement in the web service constructor. The constructor was called for scope="request" or scope="soapsession" or scope="transportsession" for each ws call.
So my question is the following: Is this the case in axis2? And if yes, for non-trivial web services, isn't it very costly (to re-instantiate per service call)?
Is the recommended approach to use application scope services? Or my understanding is wrong here?

Nope, this is not the way Axis2 does the session. As I can see you have not send session related information to manage the session. For example, when you use soapsession you need to send the session ID, which you can  do simply by engaging addressing module to both client and server side and setting the setManageSession(true) in the option object. Similarly, when you use transport session you are required to send the cookies, which can also done by setting the above property. For the request session, it creates service instance for each invocation. 

Deepal


Thank you!

 

 

 

 

 

 

 

 

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