Hi,

This is the second patch. But the function name does not show up, actually
ngx_http_range_header_filter() shoud intead of
@@ -224,12 +224,6 @@ parse:

# HG changeset patch
# User hucongcong <[email protected]>
# Date 1478745892 -28800
#      Thu Nov 10 10:44:52 2016 +0800
# Node ID 32838ae5fe67e7b3c628458e267a90ea1b4994a7
# Parent  c7b6269faec0d2ee6b4f4f625db8c219b5d0b010
Http range_filter: only initialize ctx->ranges in main request.

It is not necessary to initialize ctx->ranges in all request, because
ctx->ranges in subrequest will be reassigned to ctx->ranges of main
request.

diff -r c7b6269faec0 -r 32838ae5fe67 
src/http/modules/ngx_http_range_filter_module.c
--- a/src/http/modules/ngx_http_range_filter_module.c   Thu Nov 10 10:17:53 
2016 +0800
+++ b/src/http/modules/ngx_http_range_filter_module.c   Thu Nov 10 10:44:52 
2016 +0800
@@ -224,12 +224,6 @@ parse:
 
     ctx->offset = r->headers_out.content_offset;
 
-    if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_range_t))
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
     ranges = r->single_range ? 1 : clcf->max_ranges;
 
     switch (ngx_http_range_parse(r, ctx, ranges)) {
@@ -291,6 +285,12 @@ ngx_http_range_parse(ngx_http_request_t 
         }
     }
 
+    if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_range_t))
+        != NGX_OK)
+    {
+        return NGX_ERROR;
+    }
+
     p = r->headers_in.range->value.data + 6;
     size = 0;
     content_length = r->headers_out.content_length_n;
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