Upstream: fixed $upstream_response_length without buffering.
Reported by Piotr Sikora.
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index a7e88b7..45e2eb7 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -3307,7 +3307,7 @@
u->state->response_sec = tp->sec - u->state->response_sec;
u->state->response_msec = tp->msec - u->state->response_msec;
- if (u->pipe) {
+ if (u->pipe && u->pipe->read_length) {
u->state->response_length = u->pipe->read_length;
}
}