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/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* joris.guisson@gmail.com *
* *
* 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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef BTPACKETWRITER_H
#define BTPACKETWRITER_H
#include <list>
#include <qmutex.h>
#include <net/bufferedsocket.h>
#include "globals.h"
namespace bt
{
class Peer;
class Request;
class Chunk;
class BitSet;
class Packet;
/**
@author Joris Guisson
*/
class PacketWriter : public net::SocketWriter
{
Peer* peer;
std::list<Packet*> control_packets;
std::list<Packet*> data_packets;
Packet* curr_packet;
Uint32 ctrl_packets_sent;
mutable Uint32 uploaded;
mutable Uint32 uploaded_non_data;
mutable QMutex mutex;
public:
PacketWriter(Peer* peer);
virtual ~PacketWriter();
/**
* Send a choke packet.
*/
void sendChoke();
/**
* Send an unchoke packet.
*/
void sendUnchoke();
/**
* Sends an unchoke message but doesn't update the am_choked field so KT still thinks
* it is choked (and will not upload to it), this is to punish snubbers.
*/
void sendEvilUnchoke();
/**
* Send an interested packet.
*/
void sendInterested();
/**
* Send a not interested packet.
*/
void sendNotInterested();
/**
* Send a request for data.
* @param req The Request
*/
void sendRequest(const Request & r);
/**
* Cancel a request.
* @param req The Request
*/
void sendCancel(const Request & r);
/**
* Send a reject for a request
* @param req The Request
*/
void sendReject(const Request & r);
/**
* Send a have packet.
* @param index
*/
void sendHave(Uint32 index);
/**
* Send an allowed fast packet
* @param index
*/
void sendAllowedFast(Uint32 index);
/**
* Send a chunk of data.
* @param index Index of chunk
* @param begin Offset into chunk
* @param len Length of data
* @param ch The Chunk
* @return true If we satisfy the request, false otherwise
*/
bool sendChunk(Uint32 index,Uint32 begin,Uint32 len,Chunk * ch);
/**
* Send a BitSet. The BitSet indicates which chunks we have.
* @param bs The BitSet
*/
void sendBitSet(const BitSet & bs);
/**
* Send a port message
* @param port The port
*/
void sendPort(Uint16 port);
/// Send a have all message
void sendHaveAll();
/// Send a have none message
void sendHaveNone();
/**
* Send a suggest piece packet
* @param index Index of the chunk
*/
void sendSuggestPiece(Uint32 index);
/// Send the extension protocol handshake
void sendExtProtHandshake(Uint16 port,bool pex_on = true);
/// Send an extended protocol message
void sendExtProtMsg(Uint8 id,const QByteArray & data);
/// Get the number of packets which need to be written
Uint32 getNumPacketsToWrite() const;
/// Get the number of data packets to write
Uint32 getNumDataPacketsToWrite() const;
/// Get the number of data bytes uploaded
Uint32 getUploadedDataBytes() const;
/// Get the number of bytes uploaded
Uint32 getUploadedNonDataBytes() const;
/**
* Do not send a piece which matches this request.
* But only if we are not allready sending the piece.
* @param req The request
* @param reject Wether we can send a reject instead
*/
void doNotSendPiece(const Request & req,bool reject);
/**
* Clear all pieces we are not in the progress of sending.
* @param reject Send a reject packet
*/
void clearPieces(bool reject);
private:
void queuePacket(Packet* p);
Packet* selectPacket();
virtual Uint32 onReadyToWrite(Uint8* data,Uint32 max_to_write);
virtual bool hasBytesToWrite() const;
};
}
#endif
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