# HG changeset patch
# User Roman Arutyunyan <arut@nginx.com>
# Date 1595445379 -10800
# Node ID 1f3bf1734a77808959e3fb36dc1843b1fe0d19c8
# Parent  4f30f75dbdf33d6fae9e70086e0df5cbab7db027
Xslt: disabled ranges.

Previously, the document generated by the xslt filter was always fully sent
to client even if a range was requested and response status was 206 with
appropriate Content-Range.

The xslt module is unable to serve a range because of suspending the header
filter chain.  By the moment full response xml is buffered by the xslt filter,
range header filter is not called yet, but the range body filter has already
been called and did nothing.

The fix is to disable ranges by resetting the r->allow_ranges flag much like
the image filter that employs a similar technique.

diff --git a/src/http/modules/ngx_http_xslt_filter_module.c b/src/http/modules/ngx_http_xslt_filter_module.c
--- a/src/http/modules/ngx_http_xslt_filter_module.c
+++ b/src/http/modules/ngx_http_xslt_filter_module.c
@@ -233,6 +233,7 @@ ngx_http_xslt_header_filter(ngx_http_req
     ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module);
 
     r->main_filter_need_in_memory = 1;
+    r->allow_ranges = 0;
 
     return NGX_OK;
 }