Message exchanges over multiple transports?

A question for the TBTF/AMG ...

Has any consideration been given to the possibility of message 
exchanges over multiple transports, eg. request-response with the
request delivered via HTTP, and the response delivered via SMTP?
Perhaps with constraints provided by the initial sender, eg. "return
the response via HTTP if an immediate reponse is possible, otherwise 
deliver a deferred response via SMTP"?

On the face of it, something like this could be very useful ... but
maybe also very ugly to specify cleanly.



Miles Sabin                                     InterX
Internet Systems Architect                      27 Great West Road
+44 (0)20 8817 4030                             Middx, TW8 9AS, UK                     

Received on Thursday, 16 August 2001 13:40:40 UTC