Am Freitag, 2. August 2013, 11:21:56 schrieb Eric Covener: > > I think this does not work for GET requests or request without a > > request body. > Just re-read spec, you are right -- we are abusing this in a module > as a sort of extended handshake even w/ no body, but not against > heterogenous backends.
One could do an 'OPTIONS *' request. But I am not sure if that is any better than proxy-initial-not-pooled in terms of performance. Or a filter could just send the first bytes of the request (less than the request line) and then do a filter flush. If that fails, repeating the request on a different connection would be ok even for non- idempotent requests, because we would know that the backend has not received the full request yet. I don't know how many errors this would catch in practice, though.
