1 /*******************************************************************************
2 * Copyright (c) 2011 Intalio, Inc.
3 * ======================================================================
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * and Apache License v2.0 which accompanies this distribution.
7 *
8 * The Eclipse Public License is available at
9 * http://www.eclipse.org/legal/epl-v10.html
10 *
11 * The Apache License v2.0 is available at
12 * http://www.opensource.org/licenses/apache2.0.php
13 *
14 * You may elect to redistribute this code under either of these licenses.
15 *******************************************************************************/
16 package org.eclipse.jetty.websocket;
17
18
19 public class FixedMaskGen implements MaskGen
20 {
21 private final byte[] _mask;
22
23 public FixedMaskGen()
24 {
25 this(new byte[]{(byte)0xff,(byte)0xff,(byte)0xff,(byte)0xff});
26 }
27
28 public FixedMaskGen(byte[] mask)
29 {
30 _mask=new byte[4];
31 // Copy to avoid that external code keeps a reference
32 // to the array parameter to modify masking on-the-fly
33 System.arraycopy(mask, 0, _mask, 0, 4);
34 }
35
36 public void genMask(byte[] mask)
37 {
38 System.arraycopy(_mask, 0, mask, 0, 4);
39 }
40 }