PubSubHubbub Core 0.4: Fat pings vs. normal pings

Hi,


It currently only seems to be possible that the hub sends an update
notification to the subscriber that contains the (full) content of the
subscribed resource/topic (fat ping).

Sending only the POST request without any content (light ping) seems to
be a violation of the spec.

Is this intentional?
Shouldn't hubs be able to send light pings?

-- 
Regards/Mit freundlichen Grüßen
Christian Weiske

-=≡ Geeking around in the name of science since 1982 ≡=-