1 /*
2 * Copyright 2012 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.handler.codec.frame;
17
18 import org.jboss.netty.buffer.ChannelBuffer;
19 import org.jboss.netty.buffer.ChannelBuffers;
20
21 /**
22 * A set of commonly used delimiters for {@link DelimiterBasedFrameDecoder}.
23 */
24 public final class Delimiters {
25
26 /**
27 * Returns a {@code NUL (0x00)} delimiter, which could be used for
28 * Flash XML socket or any similar protocols.
29 */
30 public static ChannelBuffer[] nulDelimiter() {
31 return new ChannelBuffer[] {
32 ChannelBuffers.wrappedBuffer(new byte[] { 0 }) };
33 }
34
35 /**
36 * Returns {@code CR ('\r')} and {@code LF ('\n')} delimiters, which could
37 * be used for text-based line protocols.
38 */
39 public static ChannelBuffer[] lineDelimiter() {
40 return new ChannelBuffer[] {
41 ChannelBuffers.wrappedBuffer(new byte[] { '\r', '\n' }),
42 ChannelBuffers.wrappedBuffer(new byte[] { '\n' }),
43 };
44 }
45
46 private Delimiters() {
47 // Unused
48 }
49 }