RE: [ebxml-msg] Can an MSH send a sync ack and then an async response?

[David Fischer <david@drummondgroup.com>]

Arvola,

This would fix the problem.  Would there then be 4 new enumerated values?

None
SignalsOnly
ResponseOnly
SignalsAndResponse
mshSignalsOnly
mshSignalsAndSignals
mshSignalsAndResponse
mshSignalsAndSignalsAndResponse

Cliff is right that this implicitly changes the behavior of the MSH (at least
from a programmer's view) but can we avoid a change in the MS spec?

David.

-----Original Message-----
From: Arvola Chan [mailto:arvola@tibco.com]
Sent: Friday, January 18, 2002 7:26 PM
To: Cliff Collins; Cherian Sanjay; ebxml-msg@lists.oasis-open.org
Subject: Re: [ebxml-msg] Can an MSH send a sync ack and then an async
response?


Cliff:

The syncReplyMode value of "mshSignalsOnly" was agreed by the team during
the conference call of 10/22/2001. See
http://lists.oasis-open.org/archives/ebxml-msg/200110/msg00174.html.

The sentence on lines 1632-1634 may cause some confusion:

"If the syncReplyMode is not none, a SyncReply element MUST be present and
the MSH must return any response from the application or business process in
the payload of the synchronous reply message, as appropriate."

If syncReplyMode is mshSignalsOnly, response from the application or
business process would not be contained in the synchronous reply message,
only the MSH level Acknowledgment would be returned synchronously; business
signals and response have to be returned asynchronously.

I agree with Ralph that this is a reasonable behaviour that should be
configurable. We may need to rephrase the sentence on lines 1632-1634 to
allow this to happen.

-Arvola

----- Original Message -----
From: "Cliff Collins" <collinsc@sybase.com>
To: "Arvola Chan" <arvola@tibco.com>; "Cherian Sanjay"
<Sanjay_Cherian@stercomm.com>; <ebxml-msg@lists.oasis-open.org>
Sent: Friday, January 18, 2002 1:11 PM
Subject: RE: [ebxml-msg] Can an MSH send a sync ack and then an async
response?


> Doesn't this conflict with the MS 2.0 spec and indirectly change the
> functionality of a MSH without the MS team voting on it?
>
> MS Lines 1632-1643 (section 7.4.7) would be in conflict with the CPA
1.1/2.0
> and would need to change.
>
> Cliff
>
>
> > -----Original Message-----
> > From: Arvola Chan [mailto:arvola@tibco.com]
> > Sent: Friday, January 18, 2002 1:03 PM
> > To: Cherian Sanjay; ebxml-msg@lists.oasis-open.org;
> > ebxml-cppa@lists.oasis-open.org
> > Subject: Re: [ebxml-msg] Can an MSH send a sync ack and then an async
> > response?
> >
> >
> > Sanjay:
> >
> > The next version of the CPP/A spec (don't yet know whether it is
> > going to be
> > called 1.1 or 2.0, but due end of 2/2002) that the ebxml-cppa TC
> > is working
> > on will have an additional synchronous reply mode defined,
> > "mshSignalsOnly".
> > In that mode, the receiver is expected to return the Acknowledgment
> > synchronously, and then any business level signal or response
> > asynchronously.
> >
> > -Arvola
> >
> > ----- Original Message -----
> > From: "Cherian, Sanjay" <Sanjay_Cherian@stercomm.com>
> > To: <ebxml-msg@lists.oasis-open.org>
> > Sent: Friday, January 18, 2002 12:08 PM
> > Subject: [ebxml-msg] Can an MSH send a sync ack and then an async
> > response?
> >
> >
> > > Hi,
> > >
> > > The question is 'Can an MSH send a sync ack and then an async
response?'
> > >
> > > Lines 1632-1643 (section 7.4.7) in ebMS v2.0 states:
> > >
> > > If the syncReplyMode parameter is not none, a SyncReply element MUST
> > > be present and the MSH must return any response from the application
or
> > > business process in the payload of the synchronous reply message, as
> > > appropriate.
> > >
> > > It would seem useful if the MSH could return the ack message
> > synchronously,
> > > close the HTTP connection and
> > > then send the business signal and/or response asynchronously.  This is
> > > necessary if the business process is
> > > long lived.  It also seems necessary for reliable messaging to work
with
> > > SyncReply set.
> > >
> > > I would greatly appreciate an answer.
> > >
> > > Thanks a lot in advance.
> > >
> > > Regards,
> > > Sanjay J. Cherian
> > > Sterling Commerce,
> > > Irving, TX
> > >
> > >
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