/*
* 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.peermanager.messaging.Message;
import com.aelitis.azureus.core.peermanager.messaging.MessageException;
public class BTSuggestPiece implements BTMessage {
private DirectByteBuffer buffer = null;
private byte version;
private String description = null;
private final int piece_number;
public BTSuggestPiece( int piece_number, byte version ) {
this.piece_number = piece_number;
this.version = version;
}
public int getPieceNumber() { return piece_number; }
public String getID() { return BTMessage.ID_BT_SUGGEST_PIECE; }
public byte[] getIDBytes() { return BTMessage.ID_BT_SUGGEST_PIECE_BYTES; }
public String getFeatureID() { return BTMessage.BT_FEATURE_ID; }
public int getFeatureSubID() { return BTMessage.SUBID_BT_SUGGEST_PIECE; }
public int getType() { return Message.TYPE_PROTOCOL_PAYLOAD; }
public byte getVersion() { return version; };
public String getDescription() {
if( description == null ) {
description = BTMessage.ID_BT_SUGGEST_PIECE + " piece #" + piece_number;
}
return description;
}
public DirectByteBuffer[] getData() {
if( buffer == null ) {
buffer = DirectByteBufferPool.getBuffer( DirectByteBuffer.AL_MSG_BT_SUGGEST_PIECE, 4 );
buffer.putInt( DirectByteBuffer.SS_MSG, piece_number );
buffer.flip( DirectByteBuffer.SS_MSG );
}
return new DirectByteBuffer[]{ buffer };
}
public Message deserialize( DirectByteBuffer data, byte version ) throws MessageException {
if( data == null ) {
throw new MessageException( "[" +getID() +"] decode error: data == null" );
}
if( data.remaining( DirectByteBuffer.SS_MSG ) != 4 ) {
throw new MessageException( "[" +getID() + "] decode error: payload.remaining[" +data.remaining( DirectByteBuffer.SS_MSG )+ "] != 12" );
}
int num = data.getInt( DirectByteBuffer.SS_MSG );
if( num < 0 ) {
throw new MessageException( "[" +getID() + "] decode error: num < 0" );
}
data.returnToPool();
return new BTSuggestPiece( num, version );
}
public void destroy() {
if( buffer != null ) buffer.returnToPool();
}
}