nginx patch for https://github.com/zhaofeng0019/nginx-upstream-dynamic-resolve-servers

nginx-upstream-dynamic-resolve-servers.patch

diff -ur nginx-1.18.0.orig/src/http/ngx_http_upstream.c nginx-1.18.0/src/http/ngx_http_upstream.c
--- nginx-1.18.0.orig/src/http/ngx_http_upstream.c	2020-04-21 23:09:01.000000000 +0900
+++ nginx-1.18.0/src/http/ngx_http_upstream.c	2020-07-30 11:28:08.000000000 +0900
@@ -192,6 +192,8 @@
     ngx_http_upstream_t *u, ngx_connection_t *c);
 #endif
 
+extern ngx_int_t ngx_http_upstream_dynamic_resolve_directive(ngx_conf_t *cf,
+    ngx_http_upstream_server_t *us, ngx_uint_t *i);
 
 static ngx_http_upstream_header_t  ngx_http_upstream_headers_in[] = {
 
@@ -5858,6 +5860,13 @@
 
     for (i = 2; i < cf->args->nelts; i++) {
 
+        ngx_int_t res = ngx_http_upstream_dynamic_resolve_directive(cf, us, &i);
+        if (res == NGX_ERROR) {
+            goto invalid;
+        } else if (res == NGX_AGAIN) {
+            continue;
+        }
+
         if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
 
             if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {