/*
* Created on Apr 30, 2004
* Created by Alon Rohter
* Copyright (C) 2004, 2005, 2006 Aelitis, All Rights Reserved.
*
* This program 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 2
* of the License, or (at your option) any later version.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.core.peermanager.messaging.bittorrent;
import org.gudy.azureus2.core3.util.*;
import com.aelitis.azureus.core.networkmanager.RawMessage;
import com.aelitis.azureus.core.peermanager.messaging.Message;
import com.aelitis.azureus.core.peermanager.messaging.MessageException;
/**
* BitTorrent keep-alive message.
*/
public class BTKeepAlive implements BTMessage, RawMessage {
private byte version;
private DirectByteBuffer[] buffer = null;
private boolean no_delay = false;
public BTKeepAlive(byte _version) {
version = _version;
}
// message
public String getID() { return BTMessage.ID_BT_KEEP_ALIVE; }
public byte[] getIDBytes() { return BTMessage.ID_BT_KEEP_ALIVE_BYTES; }
public String getFeatureID() { return BTMessage.BT_FEATURE_ID; }
public int getFeatureSubID() { return BTMessage.SUBID_BT_KEEP_ALIVE; }
public int getType() { return Message.TYPE_PROTOCOL_PAYLOAD; }
public byte getVersion() { return version; };
public String getDescription() { return BTMessage.ID_BT_KEEP_ALIVE; }
public DirectByteBuffer[] getData() { return new DirectByteBuffer[]{}; }
public Message deserialize( DirectByteBuffer data, byte version ) throws MessageException {
if( data != null && data.hasRemaining( DirectByteBuffer.SS_MSG ) ) {
throw new MessageException( "[" +getID() +"] decode error: payload not empty" );
}
if( data != null ) data.returnToPool();
return new BTKeepAlive(version);
}
// raw message
public DirectByteBuffer[] getRawData() {
if( buffer == null ) {
DirectByteBuffer dbb = DirectByteBufferPool.getBuffer( DirectByteBuffer.AL_MSG_BT_KEEPALIVE, 4 );
dbb.putInt( DirectByteBuffer.SS_BT, 0 );
dbb.flip( DirectByteBuffer.SS_BT );
buffer = new DirectByteBuffer[]{ dbb };
}
return buffer;
}
public int getPriority() { return RawMessage.PRIORITY_LOW; }
public boolean isNoDelay() { return no_delay; }
public void setNoDelay() { no_delay = true; }
public Message[] messagesToRemove() { return null; }
public void destroy() {
if( buffer != null ) {
buffer[0].returnToPool();
}
}
public Message getBaseMessage() { return this; }
}