Upstream: introduced a new macro for down value.

src/http/ngx_http_upstream.c

@@ -6530,7 +6530,7 @@ ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
                 goto not_supported;
             }
 
-            us->down = 1;
+            us->down = NGX_HTTP_UPSTREAM_FAILED;
 
             continue;
         }

src/http/ngx_http_upstream_round_robin.h

@@ -18,6 +18,8 @@
 #define NGX_HTTP_UPSTREAM_SID_LEN    32  /* md5 in hex */
 #endif
 
+#define NGX_HTTP_UPSTREAM_FAILED     1
+
 
 typedef struct ngx_http_upstream_rr_peers_s  ngx_http_upstream_rr_peers_t;
 typedef struct ngx_http_upstream_rr_peer_s   ngx_http_upstream_rr_peer_t;

src/stream/ngx_stream_upstream.c

@@ -536,7 +536,7 @@ ngx_stream_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
                 goto not_supported;
             }
 
-            us->down = 1;
+            us->down = NGX_STREAM_UPSTREAM_FAILED;
 
             continue;
         }

src/stream/ngx_stream_upstream_round_robin.h

@@ -14,6 +14,9 @@
 #include <ngx_stream.h>
 
 
+#define NGX_STREAM_UPSTREAM_FAILED      1
+
+
 typedef struct ngx_stream_upstream_rr_peers_s  ngx_stream_upstream_rr_peers_t;
 typedef struct ngx_stream_upstream_rr_peer_s   ngx_stream_upstream_rr_peer_t;