Re: SOAP meets RSS

[Aaron Swartz <aswartz@swartzfam.com>]

Ken MacLeod <ken@bitsko.slc.ut.us> wrote:

> A firewall friendly service might allow for responding to
> notifications from a variety of sources, and then forwarding them by
> subscription.

This is a definite use case for changedPage. The way I'd see it being done
is the machine inside the firewall would call up the notifier, then it would
subscribe it's responder to the feed, with a special URL that indicated that
it was interested in subscribing -- something like:

http://firewall.example.org/changedPage/?notify=myMachinesID

When the firewall received notifications, it would pass them on to the
proper machine. The problem with this system is that if many machines inside
the firewall subscribe to the same feed, there's a lot of waste -- the
firewall machine only needs to be notified once. In such a case, the
inside-firewall machine could subscribe the firewall to the service, then
notify the firewall that it was interested in these notifications.

-- 
[ Aaron Swartz | me@aaronsw.com | http://www.aaronsw.com ]