Re: [ebxml-msg] Groups - Multi-hop Section Draft 0.8 (ebMS3-Multihop V08-JD.doc) uploaded

[Sander Fieten <sander@fieten-it.com>]

Jacques,

as mentioned during the call last week I think the solution as  
described in the current proposal requires behaviour from pulling  
endpoint different than specified in the Core V3. In an earlier  
document I posted (http://www.oasis-open.org/apps/org/workgroup/ebxml-msg/download.php/28471/ebMS-lastpull-v1.doc 
) I tried to show the problem is that the pulling endpoint will try to  
initiate the reliable exchange in both ways by sending a  
CreateSequence that includes an sequence offer. This offer however  
conflicts with the CreateSequence that is already sent by the  
initiating endpoint and is now waiting on the intermediary to be  
delivered.

The option I showed in the earlier document tries to stay close to the  
Core V3 behaviour on behalf of the endpoint, but it has some issues  
because of undefined behaviour. The scenario from the current proposal  
doesn't differ to much from the one I described, it only seems to  
leave out the reliable sequence for sending PullRequest messages. This  
means there is no reliablity available for these messages, question is  
if this is acceptable? If yes, should we alter the Core spec  
accordingly and remove it there as well (otherwise multihop and  
point-2-point seem inconsistent)?

Regards,

Sander







On 23 jul 2008, at 20:54, jdurand@us.fujitsu.com wrote:

> The document revision named Multi-hop Section Draft 0.8 (ebMS3- 
> Multihop
> V08-JD.doc) has been submitted by Mr Jacques Durand to the OASIS ebXML
> Messaging Services TC document repository.  This document is  
> revision #6 of
> ebMS3-Multihop.doc.
>
> Document Description:
> Draft of the multi-hop section.
> V0.3:
> - a few updates in the definition section (editorial)
> - added a commented Flow diagram (section 1.7.1) on RM sequence
> establishment. To review.
> V0.4:
> - section 1.5 (Intermediary Role) rewritten, though not complete yet.
> (diff with 0.3 visible)
> V0,5:
> - section 1.5 updated based on feedback and extended for response
> messages.
> V0.6:
> - Added text to section 1.5 on streaming and store-and-forward  
> models for
> implementing intermediaries
> V0.7:
> - Changed the text describing the streaming model to include two sub  
> cases,
> asynchronous and synchronous streaming.
> V0.8:
> - a few updates / corrections (diffs visible)
> - fleshed out the "routing of Acks" multihop subsection at the end.
>
> View Document Details:
> http://www.oasis-open.org/apps/org/workgroup/ebxml-msg/document.php?document_id=28918
>
> Download Document:
> http://www.oasis-open.org/apps/org/workgroup/ebxml-msg/download.php/28918/ebMS3-Multihop%20V08-JD.doc
>
> Revision:
> This document is revision #6 of ebMS3-Multihop.doc.  The document  
> details
> page referenced above will show the complete revision history.
>
>
> PLEASE NOTE:  If the above links do not work for you, your email  
> application
> may be breaking the link into two pieces.  You may be able to copy  
> and paste
> the entire link address into the address field of your web browser.
>
> -OASIS Open Administration