ISSUE: Message-id management

[Mark Taylor]

The Asynchronous Call/Response pattern described in section 3.9 has 
the sender generating an ID which is used to match the message 
with its response between sender and hub, after which the hub 
generates a different ID which is used to match the message 
with its resopnse between hub and recipient.
This permits use of any value for message ID by the sender.

Some feel this is unnecessarily complicated and prefer a 
required message-id of form <senderId>-<uniqueKey> which would
enable the same string to be used for all stages of the message's
life.

-- 
Mark Taylor   Astronomical Programmer   Physics, Bristol University, UK
m.b.taylor at bris.ac.uk +44-117-928-8776 http://www.star.bris.ac.uk/~mbt/