http://svn.apache.org/r1656359 (CHANGES entry)
2.4.x patch: trunk works (modulo CHANGES, docs/log-message-tags)
+1: ylavic
+ -0: jim: This seems to be a hit to normal performance, to handle an
+ error and/or non-normal condition. The pre-fetch is
+ expensive, and is always done, even before we know that
+ the backend is available to rec' it. I understand the
+ error described, but is the fix actually worth it (plus
+ it seems to allow for a DDoS vector).
*) http: Make ap_die() robust against any HTTP error code and not modify
response status (finally logged) when nothing is to be done. PR 56035.