# HG changeset patch
# User Ruslan Ermilov <ru@nginx.com>
# Date 1541510975 -10800
# Node ID d4448892a2943f27e5360705c719bfd045c8ef26
# Parent  e5069816039b75b1653a4c7c2f982a1ca8d9f9af
HTTP/2: flood detection.

Fixed uncontrolled memory growth in case peer is flooding us with
some frames (e.g., SETTINGS and PING) and doesn't read data.  Fix
is to limit the number of allocated control frames.

diff -r e5069816039b -r d4448892a294 src/http/v2/ngx_http_v2.h
--- a/src/http/v2/ngx_http_v2.h	Tue Nov 06 16:29:18 2018 +0300
+++ b/src/http/v2/ngx_http_v2.h	Tue Nov 06 16:29:35 2018 +0300
@@ -120,6 +120,7 @@
     ngx_http_connection_t           *http_connection;
 
     ngx_uint_t                       processing;
+    ngx_uint_t                       frames;
 
     size_t                           send_window;
     size_t                           recv_window;