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Subject: Re: [wsrm] message headers for Ack and Fault ??


Sunil Kunisetty <Sunil.Kunisetty@oracle.com> wrote at Thu, 12 Feb 2004 09:45:41 -0800:
> Tom Rutt wrote:
> > Sunil Kunisetty wrote:
> > >Tom Rutt wrote:
> > >>Tom Rutt wrote:
> > >>>Tom Rutt wrote:
> > >>>>Jacques Durand wrote:
...
> > > There are some use cases that require to know the reply pattern used in
> > > the response (Ack/Fault).
> > >
> > > For example, Sender sends a reliable message with callback pattern.
> > > Assume he didn't receive the ack. or fault for a while. Sender 'polls'
> > > the Receiver for that message. Finally he gets the ack. He may not
> > > know whether he received the ack. because of Poll or Callback, as the
> > > response will be the same. Ofcourse, one may say why does he need
> > > to know that as long as he receives it. But it would be useful to know
> > > so that he can do the cleanup (say to stop the callback listener etc.)
> > >
> > The callback response comes on an http request.
> >
> > The poll response comes on an http response.
> 
>  Not necessarily. What is important is that the poll request is sent
>  from the original sender itself in a different
>  transaction/connection. Ack may be sent as a (http) request if the
>  Sender uses robust in-out pattern (robust in-out pattern is the
>  same as the in-out except that out is sent to node/listener other
>  than the sender node/listener).
> 
>  Again it may not be possible in all cases for the Sender to receive
>  the request if it is inside the firewall, however, in the above use
>  case I mentioned, the Sender is doing the poll as a follow-up for
>  the Callback. So we have an implicit assumption that the Sender can
>  receive a Http request.

The minutes from the January F2F [1] contain this section:

 ] 4.20 Rel 94
 ] 
 ] Tom: does it clearly state that the poll can only be done for messages
 ] which were originally send with this pattern set.
 ] 
 ] Sunil: it does state this.
 ] 
 ] Need to add a section about polling in section 2, with the model.
 ] 
 ] Sunil: there is no general section on the model for polling.
 ] 
 ] The header elements are properly defined in sections 3.3 and 3.4.
 ] 
 ]  ACTION: Sunil took action to come up with additions to the model text
 ]  for section 2.1 by Friday.
 ] 
 ] Left open until modeling text is complete.

Which is true? Is it true that poll can only be done for messages that
were originally sent with this pattern, or is it true that the Sender
can send a poll for a message that was specified to use the callback
pattern?

And where is this stated?

Regards,


Tony Graham
------------------------------------------------------------------------
Web Products, Technologies and Standards           Phone: +353 1 8199708
Sun Microsystems                                              x(70)19708
East Point Business Park, Dublin 3, Ireland


[1] http://www.oasis-open.org/apps/org/workgroup/wsrm/download.php/5089/Minutes-Jan04f2f.htm#_Toc62277593


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