tree a09cfd4c3a9ce4420dc90bce53603c305e23dfc6
parent 2da47d81c38124dbf2cd1c2472990728cde4a6f2
author Maxim Dounin <mdounin@mdounin.ru> 1498514026 +0300
committer Maxim Dounin <mdounin@mdounin.ru> 1498514026 +0300

Range filter: allowed ranges on empty files (ticket #1031).

As per RFC 2616 / RFC 7233, any range request to an empty file
is expected to result in 416 Range Not Satisfiable response, as
there cannot be a "byte-range-spec whose first-byte-pos is less
than the current length of the entity-body".  On the other hand,
this makes use of byte-range requests inconvenient in some cases,
as reported for the slice module here:

http://mailman.nginx.org/pipermail/nginx-devel/2017-June/010177.html

This commit changes range filter to instead return 200 if the file
is empty and the range requested starts at 0.