diff --git a/include/types/session.h b/include/types/session.h
new file mode 100644
index 0000000..c07b46a
--- /dev/null
+++ b/include/types/session.h
@@ -0,0 +1,48 @@
+/*
+ * include/types/session.h
+ * This file defines everything related to sessions.
+ *
+ * Copyright (C) 2000-2015 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
+ * exclusively.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef _TYPES_SESSION_H
+#define _TYPES_SESSION_H
+
+
+#include <sys/time.h>
+#include <unistd.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <common/config.h>
+#include <common/mini-clist.h>
+
+#include <types/obj_type.h>
+#include <types/proxy.h>
+#include <types/stick_table.h>
+
+struct session {
+};
+
+#endif /* _TYPES_SESSION_H */
+
+/*
+ * Local variables:
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ * End:
+ */
diff --git a/include/types/stream.h b/include/types/stream.h
index c8c2445..469edc7 100644
--- a/include/types/stream.h
+++ b/include/types/stream.h
@@ -39,6 +39,7 @@
 #include <types/proxy.h>
 #include <types/queue.h>
 #include <types/server.h>
+#include <types/session.h>
 #include <types/stream_interface.h>
 #include <types/task.h>
 #include <types/stick_table.h>
@@ -119,6 +120,8 @@
 	struct proxy *fe;               /* the proxy this stream depends on for the client side */
 	struct proxy *be;               /* the proxy this stream depends on for the server side */
 
+	struct session *sess;           /* the session this stream is attached to */
+
 	struct listener *listener;      /* the listener by which the request arrived */
 	struct server *srv_conn;        /* stream already has a slot on a server and is not in queue */
 	struct pendconn *pend_pos;      /* if not NULL, points to the position in the pending queue */