--- a/plugins/mod_c2s.lua	Tue May 28 18:32:51 2013 +0200
+++ b/plugins/mod_c2s.lua	Thu May 30 14:32:40 2013 +0200
@@ -262,6 +262,13 @@
 	end
 end
 
+function listener.onreadtimeout(conn)
+	local session = sessions[conn];
+	if session then
+		return session.send(' ');
+	end
+end
+
 function listener.associate_session(conn, session)
 	sessions[conn] = session;
 end

--- a/plugins/mod_s2s/mod_s2s.lua	Tue May 28 18:32:51 2013 +0200
+++ b/plugins/mod_s2s/mod_s2s.lua	Thu May 30 14:32:40 2013 +0200
@@ -624,6 +624,13 @@
 	end
 end
 
+function listener.onreadtimeout(conn)
+	local session = sessions[conn];
+	if session then
+		return session.sends2s(' ');
+	end
+end
+
 function listener.register_outgoing(conn, session)
 	session.direction = "outgoing";
 	sessions[conn] = session;