eu.xworlds.util.raknet.protocol.UnconnectedPing.java Source code

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Here is the source code for eu.xworlds.util.raknet.protocol.UnconnectedPing.java

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/*
This file is part of "xWorlds utilities".
    
"xWorlds utilities" is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
"xWorlds utilities" 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with "nukkit xWorlds plugin". If not, see <http://www.gnu.org/licenses/>.
    
 */
package eu.xworlds.util.raknet.protocol;

import java.net.InetSocketAddress;
import java.nio.ByteOrder;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;

/**
 * Message "UnconnectedPing".
 * 
 * <p><b>The following docu is taken from procotol information</b>:</p>
 * 
 * <p>
 * Ping from an unconnected system.  Reply but do not update timestamps. (internal use only)
 * </p>
 * 
 * @author mepeisen
 */
public class UnconnectedPing extends TargetedMessage {

    /** the raknet message id */
    public static final byte ID = 0x01;

    /** the ping timestamp */
    private long time;

    /** the magic */
    private byte[] magic;

    /**
     * Constructor for incoming message.
     * @param buf message data
     * @param sender message sender.
     * @param receiver message receiver.
     */
    public UnconnectedPing(ByteBuf buf, InetSocketAddress sender, InetSocketAddress receiver) {
        super(buf, sender, receiver);
    }

    /**
     * Constructor for outgoing message.
     * @param sender message sender.
     * @param receiver message receiver.
     */
    public UnconnectedPing(InetSocketAddress sender, InetSocketAddress receiver) {
        super(sender, receiver);
    }

    @Override
    public byte getId() {
        return ID;
    }

    @Override
    public ByteBuf encode() {

        final ByteBuf result = Unpooled.buffer(1 + SIZE_TIME + this.magic.length);
        result.order(ByteOrder.BIG_ENDIAN);
        result.writeByte(ID);
        writeTime(result, this.time);
        result.writeBytes(this.magic);
        return result;
    }

    @Override
    protected void parseMessage(ByteBuf buf) {
        this.time = readTime(buf);
        this.magic = new byte[MAGIC_BYTES];
        buf.readBytes(this.magic.length);
    }

    @Override
    public String toString() {
        return "UnconnectedPing [time=" + this.time + ", magic=" + tohex(this.magic) + "]"; //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
    }

}