1 //
2 // ========================================================================
3 // Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19
20 package org.eclipse.jetty.websocket;
21
22
23 public class FixedMaskGen implements MaskGen
24 {
25 private final byte[] _mask;
26
27 public FixedMaskGen()
28 {
29 this(new byte[]{(byte)0xff,(byte)0xff,(byte)0xff,(byte)0xff});
30 }
31
32 public FixedMaskGen(byte[] mask)
33 {
34 _mask=new byte[4];
35 // Copy to avoid that external code keeps a reference
36 // to the array parameter to modify masking on-the-fly
37 System.arraycopy(mask, 0, _mask, 0, 4);
38 }
39
40 public void genMask(byte[] mask)
41 {
42 System.arraycopy(_mask, 0, mask, 0, 4);
43 }
44 }