com.grillecube.engine.network.server.ServerNetwork.java Source code

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Here is the source code for com.grillecube.engine.network.server.ServerNetwork.java

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/**
**   This file is part of the project https://github.com/toss-dev/VoxelEngine
**
**   License is available here: https://raw.githubusercontent.com/toss-dev/VoxelEngine/master/LICENSE.md
**
**   PEREIRA Romain
**                                       4-----7          
**                                      /|    /|
**                                     0-----3 |
**                                     | 5___|_6
**                                     |/    | /
**                                     1-----2
*/

package com.grillecube.engine.network.server;

import com.grillecube.engine.Logger;
import com.grillecube.engine.Logger.Level;
import com.grillecube.engine.VoxelEngine;
import com.grillecube.engine.VoxelEngine.Side;
import com.grillecube.engine.network.Network;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;

public class ServerNetwork extends ChannelInitializer<SocketChannel> implements Network// ,
// PacketListener<PacketString>
{
    public static final int MAX_NB_THREADS = 4;
    private int _port;

    private EventLoopGroup _bossgroup;
    private EventLoopGroup _workergroup;
    private ServerBootstrap _bootstrap;
    private ChannelFuture _channel;

    public ServerNetwork() {
        this(4242);
    }

    public ServerNetwork(int port) {
        this._port = port;
    }

    public void start() throws Exception {
        this._bossgroup = new NioEventLoopGroup();
        this._workergroup = new NioEventLoopGroup();
        this._bootstrap = new ServerBootstrap();
        this._bootstrap.group(this._bossgroup, this._workergroup);
        this._bootstrap.channel(NioServerSocketChannel.class);
        this._bootstrap.childHandler(this);
        this._bootstrap.option(ChannelOption.SO_BACKLOG, 128);
        this._bootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);

        // Bind and start to accept incoming connections.
        this._channel = this._bootstrap.bind(this._port).sync(); // (7)
        Logger.get().log(Level.FINE, "Listening on " + this._port);
        this.stop();
    }

    @Override
    protected void initChannel(SocketChannel channel) throws Exception {
        channel.pipeline().addLast(new MessageHandler());
    }

    // @Override
    // public void onReceive(PacketString packet)
    // {
    // Logger.get().log(Level.FINE, "I have received " + packet.getString());
    // }

    public void stop() {
        // Wait until the server socket is closed.
        // In this example, this does not happen, but you can do that to
        // gracefully
        // shut down your server.
        try {
            this._channel.channel().closeFuture().sync();
        } catch (InterruptedException e) {
            Logger.get().log(Level.WARNING, "Interupted while synchronizing server threads...");
        }
        Logger.get().log(Level.FINE, "Stopping server");
        this._workergroup.shutdownGracefully();
        this._bossgroup.shutdownGracefully();
    }

    @Override
    public Side getSide() {
        return (VoxelEngine.Side.SERVER);
    }
}