me.ferrybig.javacoding.teamspeakconnector.internal.TeamspeakConnectionInitizer.java Source code

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Here is the source code for me.ferrybig.javacoding.teamspeakconnector.internal.TeamspeakConnectionInitizer.java

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/*
 * The MIT License
 *
 * Copyright 2017 Fernando van Loenhout.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package me.ferrybig.javacoding.teamspeakconnector.internal;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.DelimiterBasedFrameDecoder;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.timeout.ReadTimeoutHandler;
import io.netty.util.concurrent.Promise;
import me.ferrybig.javacoding.teamspeakconnector.TeamspeakConnection;
import me.ferrybig.javacoding.teamspeakconnector.internal.handler.ComplexPacketDecoder;
import me.ferrybig.javacoding.teamspeakconnector.internal.handler.HandshakeListener;
import me.ferrybig.javacoding.teamspeakconnector.internal.handler.PacketDecoder;
import me.ferrybig.javacoding.teamspeakconnector.internal.handler.PacketEncoder;
import me.ferrybig.javacoding.teamspeakconnector.internal.handler.PacketRateLimitingHandler;

public class TeamspeakConnectionInitizer extends ChannelInitializer<SocketChannel> {

    private static final StringDecoder DECODER = new StringDecoder();
    private static final StringEncoder ENCODER = new StringEncoder();
    private static final PacketDecoder PACKET_DECODER = new PacketDecoder();
    private static final PacketEncoder PACKET_ENCODER = new PacketEncoder();
    private static final ByteBuf[] LINES = new ByteBuf[] { Unpooled.wrappedBuffer(new byte[] { '\r', '\n' }), // I hate you teamspeak, Why do you use this format??
            Unpooled.wrappedBuffer(new byte[] { '\n', '\r' }), Unpooled.wrappedBuffer(new byte[] { '\n' }), };
    private final Promise<TeamspeakConnection> prom;
    private final int timeout;

    public TeamspeakConnectionInitizer(Promise<TeamspeakConnection> prom, int timeout) {
        this.prom = prom;
        this.timeout = timeout;
    }

    @Override
    protected void initChannel(SocketChannel ch) throws Exception {
        ChannelPipeline pipeline = ch.pipeline();
        pipeline.addLast(new DelimiterBasedFrameDecoder(Short.MAX_VALUE, LINES));
        pipeline.addLast(DECODER);
        pipeline.addLast(ENCODER);
        pipeline.addLast(new ReadTimeoutHandler(timeout));
        pipeline.addLast(new HandshakeListener(prom));

        pipeline.addLast(PACKET_DECODER);
        pipeline.addLast(new ComplexPacketDecoder());
        pipeline.addLast(PACKET_ENCODER);

        pipeline.addLast(new LoggingHandler(LogLevel.INFO));

        pipeline.addLast(new PacketRateLimitingHandler());
    }

}