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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package ch.cern.hbase.thirdparty.io.netty.handler.codec.rtsp;

import ch.cern.hbase.thirdparty.io.netty.buffer.ByteBuf;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.TooLongFrameException;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpMessage;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpObjectDecoder;

/**
 * Decodes {@link ByteBuf}s into RTSP messages represented in
 * {@link HttpMessage}s.
 * 

*

Parameters that prevents excessive memory consumption

* * * * * * * * * * * * * * * * *
NameMeaning
{@code maxInitialLineLength}The maximum length of the initial line * (e.g. {@code "SETUP / RTSP/1.0"} or {@code "RTSP/1.0 200 OK"}) * If the length of the initial line exceeds this value, a * {@link TooLongFrameException} will be raised.
{@code maxHeaderSize}The maximum length of all headers. If the sum of the length of each * header exceeds this value, a {@link TooLongFrameException} will be raised.
{@code maxContentLength}The maximum length of the content. If the content length exceeds this * value, a {@link TooLongFrameException} will be raised.
* * @deprecated Use {@link RtspDecoder} instead. */ @Deprecated public abstract class RtspObjectDecoder extends HttpObjectDecoder { /** * Creates a new instance with the default * {@code maxInitialLineLength (4096)}, {@code maxHeaderSize (8192)}, and * {@code maxContentLength (8192)}. */ protected RtspObjectDecoder() { this(4096, 8192, 8192); } /** * Creates a new instance with the specified parameters. */ protected RtspObjectDecoder(int maxInitialLineLength, int maxHeaderSize, int maxContentLength) { super(maxInitialLineLength, maxHeaderSize, maxContentLength * 2, false); } protected RtspObjectDecoder( int maxInitialLineLength, int maxHeaderSize, int maxContentLength, boolean validateHeaders) { super(maxInitialLineLength, maxHeaderSize, maxContentLength * 2, false, validateHeaders); } @Override protected boolean isContentAlwaysEmpty(HttpMessage msg) { // Unlike HTTP, RTSP always assumes zero-length body if Content-Length // header is absent. boolean empty = super.isContentAlwaysEmpty(msg); if (empty) { return true; } if (!msg.headers().contains(RtspHeaderNames.CONTENT_LENGTH)) { return true; } return empty; } }




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