Slice filter: clear original Accept-Ranges.
The slice filter allows ranges for the response by setting the r->allow_ranges
flag, which enables the range filter. If the range was not requested, the
range filter adds an Accept-Ranges header to the response to signal the
support for ranges.
Previously, if an Accept-Ranges header was already present in the first slice
response, client received two copies of this header. Now, the slice filter
removes the Accept-Ranges header from the response prior to setting the
r->allow_ranges flag.
diff --git a/src/http/modules/ngx_http_slice_filter_module.c b/src/http/modules/ngx_http_slice_filter_module.c
index c1edbca..186380a 100644
--- a/src/http/modules/ngx_http_slice_filter_module.c
+++ b/src/http/modules/ngx_http_slice_filter_module.c
@@ -180,6 +180,11 @@
r->headers_out.content_range->hash = 0;
r->headers_out.content_range = NULL;
+ if (r->headers_out.accept_ranges) {
+ r->headers_out.accept_ranges->hash = 0;
+ r->headers_out.accept_ranges = NULL;
+ }
+
r->allow_ranges = 1;
r->subrequest_ranges = 1;
r->single_range = 1;