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.rtsp;
17
18 import org.jboss.netty.buffer.ChannelBuffer;
19 import org.jboss.netty.handler.codec.frame.TooLongFrameException;
20 import org.jboss.netty.handler.codec.http.DefaultHttpResponse;
21 import org.jboss.netty.handler.codec.http.HttpMessage;
22 import org.jboss.netty.handler.codec.http.HttpResponse;
23 import org.jboss.netty.handler.codec.http.HttpResponseStatus;
24
25 /**
26 * Decodes {@link ChannelBuffer}s into RTSP responses represented in
27 * {@link HttpResponse}s.
28 * <p>
29 * <h3>Parameters that prevents excessive memory consumption</h3>
30 * <table border="1">
31 * <tr>
32 * <th>Name</th><th>Meaning</th>
33 * </tr>
34 * <tr>
35 * <td>{@code maxInitialLineLength}</td>
36 * <td>The maximum length of the initial line (e.g. {@code "RTSP/1.0 200 OK"})
37 * If the length of the initial line exceeds this value, a
38 * {@link TooLongFrameException} will be raised.</td>
39 * </tr>
40 * <tr>
41 * <td>{@code maxHeaderSize}</td>
42 * <td>The maximum length of all headers. If the sum of the length of each
43 * header exceeds this value, a {@link TooLongFrameException} will be raised.</td>
44 * </tr>
45 * <tr>
46 * <td>{@code maxContentLength}</td>
47 * <td>The maximum length of the content. If the content length exceeds this
48 * value, a {@link TooLongFrameException} will be raised.</td>
49 * </tr>
50 * </table>
51 */
52 public class RtspResponseDecoder extends RtspMessageDecoder {
53
54 /**
55 * Creates a new instance with the default
56 * {@code maxInitialLineLength (4096}}, {@code maxHeaderSize (8192)}, and
57 * {@code maxContentLength (8192)}.
58 */
59 public RtspResponseDecoder() {
60 }
61
62 /**
63 * Creates a new instance with the specified parameters.
64 */
65 public RtspResponseDecoder(int maxInitialLineLength, int maxHeaderSize,
66 int maxContentLength) {
67 super(maxInitialLineLength, maxHeaderSize, maxContentLength);
68 }
69
70 @Override
71 protected HttpMessage createMessage(String[] initialLine) throws Exception {
72 return new DefaultHttpResponse(
73 RtspVersions.valueOf(initialLine[0]),
74 new HttpResponseStatus(Integer.valueOf(initialLine[1]), initialLine[2]));
75 }
76
77 @Override
78 protected boolean isDecodingRequest() {
79 return false;
80 }
81 }