Range filter: late_ranges functionality. Add one more filtering point after postpone filter. This allows to serve range capable replies with subrequests. It's not as efficient as range filtering for static data (i.e. doesn't save us from reading data from disk if some filter needs them in memory), but it may save some network bandwidth for us and for our users.

# Copyright (C) Igor Sysoev


have=NGX_USE_HTTP_FILE_CACHE_UNIQ . auto/have
have=NGX_SUPPRESS_WARN . auto/have

have=NGX_SMP . auto/have