# HG changeset patch
# User Maxim Dounin <mdounin@mdounin.ru>
# Date 1604950853 -10800
# Node ID 4d5b04daeaffb3682a9f871fd8850dd1aabdba9a
# Parent  554c6ae25ffc634e29adae8b51bef6ddabebea39
Request body: improved logging.

Added logging before returning NGX_HTTP_INTERNAL_SERVER_ERROR if there
are busy buffers after a request body flush.  This should never happen
with current code, though bugs can be introduced by 3rd party modules.
Make sure debugging will be easy enough.

diff --git a/src/http/ngx_http_request_body.c b/src/http/ngx_http_request_body.c
--- a/src/http/ngx_http_request_body.c
+++ b/src/http/ngx_http_request_body.c
@@ -305,6 +305,9 @@ ngx_http_do_read_client_request_body(ngx
                         return NGX_AGAIN;
                     }
 
+                    ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+                                  "busy buffers after request body flush");
+
                     return NGX_HTTP_INTERNAL_SERVER_ERROR;
                 }