nginx 1.1.14 *) Feature: multiple "limit_req" limits may be used simultaneously. *) Bugfix: in error handling while connecting to a backend. Thanks to Piotr Sikora. *) Bugfix: in AIO error handling on FreeBSD. *) Bugfix: in the OpenSSL library initialization. *) Bugfix: the "proxy_redirect" directives might not be correctly inherited. *) Bugfix: memory leak during reconfiguration if the "pcre_jit" directive was used.

--- a/src/http/ngx_http_copy_filter_module.c
+++ b/src/http/ngx_http_copy_filter_module.c
@@ -1,6 +1,7 @@
 
 /*
  * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
  */
 
 
@@ -189,7 +190,7 @@ ngx_http_copy_filter(ngx_http_request_t 
 
             rc = n;
 
-            if (file->aio) {
+            if (rc == NGX_AGAIN) {
                 file->aio->data = r;
                 file->aio->handler = ngx_http_copy_aio_sendfile_event_handler;