# HG changeset patch
# User Maxim Dounin <mdounin@mdounin.ru>
# Date 1472743795 -10800
# Node ID 0fa883e92895bbf19cad772250a3f213475c3627
# Parent  6b1b8c4b7a95d23b74746fd87909c6933643ea7d
Event pipe: process data after recv_chain() errors.

When c->recv_chain() returns an error, it is possible that we already
have some data previously read, e.g., in preread buffer.  And in some
cases it may be even a complete response.  Changed c->recv_chain() error
handling to process the data, much like it is already done if kevent
reports about an error.

This change, in particular, fixes processing of small responses
when an upstream fails to properly close a connection with lingering and
therefore the connection is reset, but the response is already fully
obtained by nginx (see ticket #1037).

diff --git a/src/event/ngx_event_pipe.c b/src/event/ngx_event_pipe.c
--- a/src/event/ngx_event_pipe.c
+++ b/src/event/ngx_event_pipe.c
@@ -300,7 +300,7 @@ ngx_event_pipe_read_upstream(ngx_event_p
 
             if (n == NGX_ERROR) {
                 p->upstream_error = 1;
-                return NGX_ERROR;
+                break;
             }
 
             if (n == NGX_AGAIN) {