RE: Sessions with SOAP: Any ideas?

Hi Martin,

Well I'm not trying to implement Financial Transactions, I just want to
implement a disclaimer that says "This service is provided for free. Use it
at your own risk". That's why I also don't need users to be
registered/authenticated.

The only requierement that I have is that once a user accepted the
disclaimer he should not be bothered again with it. In HTTP application one
would set for example a cookie in the browser that says
"disclaimerAgreed=true".
===========================================================
Dipl. Ing. Cristian OPINCARU
University of Federal Armed Forces, Munich - Faculty of Informatics

Werner-Heisenberg-Weg 39, D-85577, Neubiberg, Germany
Building 41 / Room 0224

Tel   : +49-89-6004.2279
Fax   : +49-89-6004.3898
E-mail: [email protected]
Web   : http://inf3-www.informatik.unibw-muenchen.de/~opincaru

  -----Original Message-----
  From: Martin Gainty [mailto:[email protected]]
  Sent: Dienstag, 5. Juli 2005 12:16
  To: [email protected]
  Subject: Re: Sessions with SOAP: Any ideas?


  Cristian-
  Most developers implementing Financial Transactions (Credit Cards etc) use
SOAP over HTTPS
  Have you looked at SOAP over HTTPS?
  http://www.oracle.com/technology/oramag/oracle/02-jul/o42special_web.html
  Martin-
    ----- Original Message -----
    From: Cristian OPINCARU
    To: [email protected]
    Sent: Tuesday, July 05, 2005 6:05 AM
    Subject: RE: Sessions with SOAP: Any ideas?


    Hi,

    Thankx for your replys. This works good for services that have named
users, because the username can be used as a SessionID, and one can use
WS-Security to encode this in the SOAP header. But in my case, I would like
to do such thing for an annonymous user.

    What I'm trying to do, is implement a disclaimer in a SOAP service for
annonymous users. The workflow is as follows:

    1) The user first calls a service
    2) The service sees that this is the first time when the user called the
service and sends back an exception "here is the license agreement, please
agree to it"
    3) The user agrees with the disclaimer
    4) The next time when the user calls the service, the service will know
that the user already agreed with the disclaimer and will not be asked to do
this again.

    The problem is that the services already have well known and defined
interfaces that do not include a session parameter in the call. I have to
follow a standard, that specifiyes what I have to put in the SOAP body.

    This is why, I would need to specify this information in an "indirect"
way. The only way that I can think of, is put this information somewhere in
the SOAP header. And here comes the question: is there already some standard
way of doing this? Are there any mechanisms in the maze of WS-* standards
for this? Is there a correspondent to cookies in Web Services?

    Thankx,
    Cristian
    ===========================================================
    Dipl. Ing. Cristian OPINCARU
    University of Federal Armed Forces, Munich - Faculty of Informatics

    Werner-Heisenberg-Weg 39, D-85577, Neubiberg, Germany
    Building 41 / Room 0224

    Tel   : +49-89-6004.2279
    Fax   : +49-89-6004.3898
    E-mail: [email protected]
    Web   : http://inf3-www.informatik.unibw-muenchen.de/~opincaru

      -----Original Message-----
      From: Jonathan Roberts [mailto:[email protected]]
      Sent: Dienstag, 5. Juli 2005 10:47
      To: [email protected]
      Subject: Re: Sessions with SOAP: Any ideas?


      Hi Cristian,

      I meant something more akin to Duncan's idea than a pure session
object

      Thus:

      * the client side talks to the server
      * the server creates an object with an ID and then passes the ID back
to the client
      * the session IDF value is then used to identify which java object it
is talking to.

      Can you give us more detail about the type of sessiuon you mean.

      For example one of my projects required a session,  however it was
sufficient to store the logon/password on the client side and pass this
continually on each soap call,  this assumed a session but in reality,  each
toime an action occured a system login occured first.

      As an example

      1) login to system
      client side inputs name and pin

      2) check account balance
      login to system ( again)
      return balance

      3) pay amount - specify amount
      login to system ( again)
      return success/failure

      etc etc

      Not sure if this was best practice however.

      Opinions?

      Jon


      [email protected] wrote:
        I have just had to implement a similar system. I don't know if this
will
        help but it may give you some ideas.
        when a client sends it's first (ie log-in) message to the server,
the
        server creates a basic session object - just a simple java object -
and
        stores it in a hash with a unique id. this id is then passed back to
the
        client as part of the response message. on subsequent requests the
client
        then sends the session id as an extra parameter along side the
message
        itself. the server then retrieves the session object from the hash
using
        the unique id and performs the necessary checks etc.
        this is totally non-SOAP specific but it uses the SOAP protocol to
send the
        id as an extra parameter along side your message - just ensure you
have the
        appropriate methods exposed in however you implement your web
service. we
        also run our web service in IBM WebSphere App Server, so it's easy
for us
        to manage these session objects.
        Duncan



        Cristian Opincaru
        [email protected]> To
        [email protected]
        04/07/2005 21:05 cc

        Subject
        Please respond to Re: Sessions with SOAP: Any ideas?
        [email protected]
        he.org








        Thanks Johnathan. But HTTP cookies only solve a small part of the
        problem. If I use SOAP-over-someotherprotocol or if I have
        intermediaries, the HTTP cookies will be lost.

        Are there any alternatives to cookies? Is there some SOAP specific
way
        of implementing cookies?

        I read today about WS-Addressing and WS-Context but these
        specification seem not to be ready (at least WS-Context is still a
        draft version, while WS-Addressing is in submission at the W3C) and
on
        the other hand they seem to make things quite complicated.

        Thankx,
        Cristian

        > On 7/4/05, Jonathan Roberts wrote:
        > > Hi.
        > >
        > > You need to use a session token that you pass back and fore
between the
        > > client and the server.
        > >
        > > however soap actually aids this but inbuild functionality:
        > >
        > > http://ws.apache.org/soap/faq/faq_chawke.html#Q5_2
        > >
        > > http://ws.apache.org/soap/docs/guide/migration.html
        > >
        > >
        > > J
        > >
        > >
        > >
        > >
        > > Cristian OPINCARU
        > > wrote:
        > > Hi all,
        > >
        > > I have the following problem: I want to have implement a session
        between a
        > > SOAP client and a SOAP server (something like cookies for
example,
        every
        > > time a client makes a request, it always sends a Session ID with
his
        > > request).
        > >
        > > The problem is that SOAP (like HTTP) is a stateless protocol,
that is,
        by
        > > default there is no mechanism embedded for session management.
        > >
        > > Does anyone know how I can implement sessions in SOAP? Is there
any
        > > specification that addresses this issue?
        > >
        > > Thankx!
        > >
        > > ===========================================================
        > > Dipl. Ing. Cristian OPINCARU
        > > University of Federal Armed Forces, Munich - Faculty of
Informatics
        > >
        > > Werner-Heisenberg-Weg 39, D-85577, Neubiberg, Germany
        > > Building 41 / Room 0224
        > >
        > > Tel : +49-89-6004.2279
        > > Fax : +49-89-6004.3898
        > > E-mail: [email protected]
        > > Web :
        > > http://inf3-www.informatik.unibw-muenchen.de/~opincaru
        > >
        > >
        > >
        > > ________________________________
        > > Yahoo! Messenger NEW - crystal clear PC to PC calling worldwide
with
        > > voicemail
        > >
        > >
        >





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