de.saxsys.synchronizefx.netty.tcp.LengthFieldBasedCodec.java Source code

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Here is the source code for de.saxsys.synchronizefx.netty.tcp.LengthFieldBasedCodec.java

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/**
 * This file is part of SynchronizeFX.
 * 
 * Copyright (C) 2013-2014 Saxonia Systems AG
 *
 * SynchronizeFX is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * SynchronizeFX is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with SynchronizeFX. If not, see <http://www.gnu.org/licenses/>.
 */

package de.saxsys.synchronizefx.netty.tcp;

import de.saxsys.synchronizefx.netty.base.Codec;

import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
import io.netty.handler.codec.LengthFieldPrepender;

/**
 * A codec that collects coherent messages by prepending the size of the message to the message itself.
 * 
 * @author Raik Bieniek
 */
class LengthFieldBasedCodec implements Codec {
    @Override
    public void addToPipeline(final ChannelPipeline pipeline) {
        pipeline.addLast(new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE, 0, 4, 0, 4));
        pipeline.addLast(new LengthFieldPrepender(4));
    }
}