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Subject: Re: [ebxml-msg] Arvola's SyncReply issues




From: Arvola Chan <arvola@tibco.com>
To: Doug Bunting <dougb62@yahoo.com>, ebXML Msg <ebxml-msg@lists.oasis-open.org>
Date: Thu, 03 Jan 2002 14:06:41 -0800









Doug:
 
I believe it was in the joint MSG/CPPA meeting in 
October in Palo Alto that we decided that the 1.1 CPP/A spec would not 
explicitly address the issue of intermediaries, and that the use of 
intermediaries would have to be configured through other means for 
now.
 
If the sender asks for a synchronous reply as well 
as an intermediate Acknowledgment, as opposed to an end-to-end Acknowledgment, 
one possibility is for the intermediary to withhold the 
intermediate Acknowledgment until it has gotten the response (from the next 
intermediary or from the To Party MSH), and then piggyback its intermediate 
Acknowledgment on the response message. In this case, the sender still only 
receives a single synchronous response as opposed to an intermediate 
Acknowledgment and a response as separate messages. If we decide to do this, 
some changes to section 11 may be necessary.
 
On point (12) below, I did mention
 
I think there are actually four aspects of 
reliable messaging behavior: (1) persisting the sent message and retry 
on the part of the sender when an Acknowledgment is not returned in 
time;
 
Thanks,
-Arvola