openresty/patches/nginx-1.17.4-balancer_status_code.patch

diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index f8d5707d..6efe0047 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -1515,6 +1515,11 @@ ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
         return;
     }
 
+    if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
+        ngx_http_upstream_finalize_request(r, u, rc);
+        return;
+    }
+
     u->state->peer = u->peer.name;
 
     if (rc == NGX_BUSY) {
diff --git a/src/http/ngx_http_upstream.h b/src/http/ngx_http_upstream.h
index 3e714e5b..dfbb25e0 100644
--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -427,4 +427,9 @@ extern ngx_conf_bitmask_t  ngx_http_upstream_cache_method_mask[];
 extern ngx_conf_bitmask_t  ngx_http_upstream_ignore_headers_masks[];
 
 
+#ifndef HAVE_BALANCER_STATUS_CODE_PATCH
+#define HAVE_BALANCER_STATUS_CODE_PATCH
+#endif
+
+
 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */
diff --git a/src/stream/ngx_stream.h b/src/stream/ngx_stream.h
index 09d24593..d8b4b584 100644
--- a/src/stream/ngx_stream.h
+++ b/src/stream/ngx_stream.h
@@ -27,6 +27,7 @@ typedef struct ngx_stream_session_s  ngx_stream_session_t;
 
 
 #define NGX_STREAM_OK                        200
+#define NGX_STREAM_SPECIAL_RESPONSE          300
 #define NGX_STREAM_BAD_REQUEST               400
 #define NGX_STREAM_FORBIDDEN                 403
 #define NGX_STREAM_INTERNAL_SERVER_ERROR     500
diff --git a/src/stream/ngx_stream_proxy_module.c b/src/stream/ngx_stream_proxy_module.c
index 818d7329..329dcdc6 100644
--- a/src/stream/ngx_stream_proxy_module.c
+++ b/src/stream/ngx_stream_proxy_module.c
@@ -691,6 +691,11 @@ ngx_stream_proxy_connect(ngx_stream_session_t *s)
         return;
     }
 
+    if (rc >= NGX_STREAM_SPECIAL_RESPONSE) {
+        ngx_stream_proxy_finalize(s, rc);
+        return;
+    }
+
     u->state->peer = u->peer.name;
 
     if (rc == NGX_BUSY) {
diff --git a/src/stream/ngx_stream_upstream.h b/src/stream/ngx_stream_upstream.h
index 73947f46..21bc0ad7 100644
--- a/src/stream/ngx_stream_upstream.h
+++ b/src/stream/ngx_stream_upstream.h
@@ -151,4 +151,9 @@ ngx_stream_upstream_srv_conf_t *ngx_stream_upstream_add(ngx_conf_t *cf,
 extern ngx_module_t  ngx_stream_upstream_module;
 
 
+#ifndef HAVE_BALANCER_STATUS_CODE_PATCH
+#define HAVE_BALANCER_STATUS_CODE_PATCH
+#endif
+
+
 #endif /* _NGX_STREAM_UPSTREAM_H_INCLUDED_ */