[PATCH] Upstream: ignore read-readiness if request wasn't sent

[Piotr Sikora]

# HG changeset patch
# User Piotr Sikora <piotrsikora at google.com>
# Date 1491296505 25200
#      Tue Apr 04 02:01:45 2017 -0700
# Node ID bff5ac3da350d8d9225d4204d8aded90fb670f3f
# Parent  716852cce9136d977b81a2d1b8b6f9fbca0dce49
Upstream: ignore read-readiness if request wasn't sent.

Signed-off-by: Piotr Sikora <piotrsikora at google.com>

diff -r 716852cce913 -r bff5ac3da350 src/http/ngx_http_upstream.c
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -2179,8 +2179,12 @@ ngx_http_upstream_process_header(ngx_htt
         return;
     }
 
-    if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
-        ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
+    if (!u->request_sent) {
+        if (ngx_http_upstream_test_connect(c) != NGX_OK) {
+            ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
+            return;
+        }
+
         return;
     }