diff --git a/include/proto/stream_sock.h b/include/proto/stream_sock.h
index a3fd992..929cb08 100644
--- a/include/proto/stream_sock.h
+++ b/include/proto/stream_sock.h
@@ -3,7 +3,7 @@
   This file contains client-side definitions.
 
   Copyright (C) 2000-2008 Willy Tarreau - w@1wt.eu
-  
+
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation, version 2.1
@@ -36,6 +36,8 @@
 void stream_sock_data_finish(struct stream_interface *si);
 void stream_sock_shutr(struct stream_interface *si);
 void stream_sock_shutw(struct stream_interface *si);
+void stream_sock_chk_rcv(struct stream_interface *si);
+void stream_sock_chk_snd(struct stream_interface *si);
 
 
 /* This either returns the sockname or the original destination address. Code
diff --git a/include/types/stream_interface.h b/include/types/stream_interface.h
index d34cfa4..bb4a9e3 100644
--- a/include/types/stream_interface.h
+++ b/include/types/stream_interface.h
@@ -78,6 +78,8 @@
 	unsigned int exp;       /* wake up time for connect, queue, turn-around, ... */
 	void (*shutr)(struct stream_interface *);  /* shutr function */
 	void (*shutw)(struct stream_interface *);  /* shutw function */
+	void (*chk_rcv)(struct stream_interface *);/* chk_rcv function */
+	void (*chk_snd)(struct stream_interface *);/* chk_snd function */
 	struct buffer *ib, *ob; /* input and output buffers */
 	unsigned int err_type;  /* first error detected, one of SI_ET_* */
 	void *err_loc;          /* commonly the server, NULL when SI_ET_NONE */