We're struggling with the very issue in the CATS work group. In the CATS
case, we were hoping OPES would either come up with a solution or make it
acceptable to punt for now.
My vote is to punt.
-----Original Message-----
On Behalf Of Markus Hofmann:
[snip]
Nevertheless, one might wonder whether the benefits that could be
expected from chaining callout servers outweight the increased
complexity, in particular with respect to trust relationships,
privacy, security, etc. Therefore, I'd be little bit hesitant to put
more specific requirements for callout server chaining on the calloout
protocol.