--- a/plugins/mod_websocket.lua	Thu Nov 03 23:56:17 2016 +0100
+++ b/plugins/mod_websocket.lua	Fri Nov 04 13:28:10 2016 +0100
@@ -293,7 +293,7 @@
 local function keepalive(event)
 	local session = event.session;
 	if session.open_stream == session_open_stream then
-		return session.conn:write(build_frame({ opcode = 0x9, }));
+		return session.conn:write(build_frame({ opcode = 0x9, FIN = true }));
 	end
 end