https://bz.apache.org/bugzilla/show_bug.cgi?id=63626

--- Comment #15 from Ruediger Pluem <rpl...@apache.org> ---
(In reply to Michael Osipov from comment #14)
> (In reply to Ruediger Pluem from comment #13)

> 
> Reread and understand your reasoning. I think you have a typo:
> > This allows to sent non idempotent requests to a different backend in a 
> > load balanced / fail over scenario.
> 
> Did you mean idemponent? Otherwise it does not make any sense to retry a
> request.

No I did mean non idempotent, because the "pinging" via the expect header
ensures that the request stays somewhat idempotent until we actually sent the
body on a 100-continue reply by the backend. Hence we can try with the next
backend or with the same backend if we suspect a stale tcp connection to be the
cause of the issue. Once we start sending the body, we cannot retry.

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