// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved. Use of// this source code is governed by a BSD-style license that can be found in the// LICENSE file.// +build appenginepackagewebsocketfuncmaskBytes(key[4]byte,posint,b[]byte)int{fori:=rangeb{b[i]^=key[pos&3]pos++}returnpos&3}