Upstream: hide_headers_hash handling at http level.
When headers to hide are set at the "http" level and not redefined in
a server block, we now preserve compiled headers hash into the "http"
section configuration to inherit this hash to all servers.
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index c2afa0c..4d5bea3 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -6106,7 +6106,23 @@
hash->pool = cf->pool;
hash->temp_pool = NULL;
- return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
+ if (ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts) != NGX_OK) {
+ return NGX_ERROR;
+ }
+
+ /*
+ * special handling to preserve conf->hide_headers_hash
+ * in the "http" section to inherit it to all servers
+ */
+
+ if (prev->hide_headers_hash.buckets == NULL
+ && conf->hide_headers == prev->hide_headers
+ && conf->pass_headers == prev->pass_headers)
+ {
+ prev->hide_headers_hash = conf->hide_headers_hash;
+ }
+
+ return NGX_OK;
}