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326 lines
8.0 KiB
326 lines
8.0 KiB
/***************************************************************************
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* Copyright (C) 2005 by Joris Guisson *
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* joris.guisson@gmail.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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***************************************************************************/
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#ifndef BTPEER_H
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#define BTPEER_H
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#include <tqobject.h>
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#include <tqdatetime.h>
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#include <util/timer.h>
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#include <interfaces/peerinterface.h>
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#include <util/bitset.h>
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#include "globals.h"
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#include "peerid.h"
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namespace net
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{
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class Address;
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}
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namespace mse
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{
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class RC4Encryptor;
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class StreamSocket;
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}
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namespace bt
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{
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class Chunk;
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class Peer;
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class Request;
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class Piece;
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class PacketReader;
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class PacketWriter;
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class PeerDownloader;
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class PeerUploader;
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class PeerManager;
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class UTPex;
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/**
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* @author Joris Guisson
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* @brief Manages the connection with a peer
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*
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* This class manages a connection with a peer in the P2P network.
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* It provides functions for sending packets. Packets it receives
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* get relayed to the outside world using a bunch of signals.
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*/
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class Peer : public TQObject, public kt::PeerInterface
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//,public Object
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{
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Q_OBJECT
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TQ_OBJECT
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public:
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/**
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* Constructor, set the socket.
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* The socket is already opened.
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* @param sock The socket
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* @param peer_id The Peer's BitTorrent ID
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* @param num_chunks The number of chunks in the file
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* @param chunk_size Size of each chunk
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* @param support Which extensions the peer supports
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* @param local Wether or not it is a local peer
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*/
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Peer(mse::StreamSocket* sock,
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const PeerID & peer_id,
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Uint32 num_chunks,
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Uint32 chunk_size,
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Uint32 support,
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bool local);
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virtual ~Peer();
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/// Get the peer's unique ID.
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Uint32 getID() const {return id;}
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/// Get the IP address of the Peer.
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TQString getIPAddresss() const;
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/// Get the port of the Peer
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Uint16 getPort() const;
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/// Get the address of the peer
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net::Address getAddress() const;
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/// See if the peer has been killed.
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bool isKilled() const {return killed;}
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/// Get the PacketWriter
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PacketWriter & getPacketWriter() {return *pwriter;}
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/// Is the Peer choked
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bool isChoked() const {return choked;}
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/// Is the Peer interested
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bool isInterested() const {return interested;}
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/// Are we interested in the Peer
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bool areWeInterested() const {return am_interested;}
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/// Are we choked for the Peer
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bool areWeChoked() const {return am_choked;}
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/// Are we being snubbed by the Peer
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bool isSnubbed() const;
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/// Get the upload rate in bytes per sec
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Uint32 getUploadRate() const;
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/// Get the download rate in bytes per sec
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Uint32 getDownloadRate() const;
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/// Get the Peer's BitSet
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const BitSet & getBitSet() const {return pieces;}
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/// Get the Peer's ID
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const PeerID & getPeerID() const {return peer_id;}
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/// Update the up- and down- speed and handle incoming packets
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void update(PeerManager* pman);
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/// Get the PeerDownloader.
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PeerDownloader* getPeerDownloader() {return downloader;}
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/// Get the PeerUploader.
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PeerUploader* getPeerUploader() {return uploader;}
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/**
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* Send a chunk of data.
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* @param data The data
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* @param len The length
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* @param proto Indicates wether the packed is data or a protocol message
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* @return Number of bytes written
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*/
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Uint32 sendData(const Uint8* data,Uint32 len);
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/**
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* Reads data from the peer.
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* @param buf The buffer to store the data
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* @param len The maximum number of bytes to read
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* @return The number of bytes read
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*/
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Uint32 readData(Uint8* buf,Uint32 len);
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/// Get the number of bytes available to read.
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Uint32 bytesAvailable() const;
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/**
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* See if all previously written data, has been sent.
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*/
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bool readyToSend() const;
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/**
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* Close the peers connection.
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*/
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void closeConnection();
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/**
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* Kill the Peer.
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*/
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void kill();
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/**
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* Get the time when this Peer was choked.
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*/
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TimeStamp getChokeTime() const {return time_choked;}
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/**
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* Get the time when this Peer was unchoked.
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*/
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TimeStamp getUnchokeTime() const {return time_unchoked;}
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/**
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* See if the peer is a seeder.
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*/
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bool isSeeder() const;
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/// Get the time in milliseconds since the last time a piece was received.
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Uint32 getTimeSinceLastPiece() const;
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/// Get the time the peer connection was established.
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const TQTime & getConnectTime() const {return connect_time;}
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/**
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* Get the percentual amount of data available from peer.
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*/
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float percentAvailable() const;
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/// See if the peer supports DHT
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bool isDHTSupported() const {return stats.dht_support;}
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/// Set the ACA score
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void setACAScore(double s);
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/// Get the stats of the peer
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virtual const Stats & getStats() const;
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/// Choke the peer
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void choke();
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/**
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* Emit the port packet signal.
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*/
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void emitPortPacket();
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/**
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* Emit the pex signal
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*/
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void emitPex(const TQByteArray & data);
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/// Disable or enable pex
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void setPexEnabled(bool on);
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/**
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* Set the peer's group IDs for traffic
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* @param up_gid The upload gid
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* @param down_gid The download gid
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*/
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void setGroupIDs(Uint32 up_gid,Uint32 down_gid);
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private slots:
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void dataWritten(int bytes);
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signals:
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/**
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* The Peer has a Chunk.
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* @param p The Peer
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* @param index Index of Chunk
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*/
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void haveChunk(Peer* p,Uint32 index);
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/**
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* The Peer sent a request.
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* @param req The Request
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*/
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void request(const Request & req);
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/**
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* The Peer sent a cancel.
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* @param req The Request
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*/
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void canceled(const Request & req);
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/**
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* The Peer sent a piece of a Chunk.
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* @param p The Piece
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*/
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void piece(const Piece & p);
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/**
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* Recieved a BitSet
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* @param bs The BitSet
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*/
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void bitSetRecieved(const BitSet & bs);
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/**
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* Emitted when the peer is unchoked and interested changes value.
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*/
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void rerunChoker();
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/**
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* Got a port packet from this peer.
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* @param ip The IP
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* @param port The port
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*/
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void gotPortPacket(const TQString & ip,Uint16 port);
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/**
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* A Peer Exchange has been received, the TQByteArray contains the data.
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*/
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void pex(const TQByteArray & data);
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private:
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void packetReady(const Uint8* packet,Uint32 size);
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void handleExtendedPacket(const Uint8* packet,Uint32 size);
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private:
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mse::StreamSocket* sock;
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bool choked;
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bool interested;
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bool am_choked;
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bool am_interested;
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bool killed;
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TimeStamp time_choked;
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TimeStamp time_unchoked;
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Uint32 id;
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BitSet pieces;
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PeerID peer_id;
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Timer snub_timer;
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PacketReader* preader;
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PacketWriter* pwriter;
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PeerDownloader* downloader;
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PeerUploader* uploader;
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mutable kt::PeerInterface::Stats stats;
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TQTime connect_time;
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UTPex* ut_pex;
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bool pex_allowed;
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Uint32 utorrent_pex_id;
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friend class PacketWriter;
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friend class PacketReader;
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friend class PeerDownloader;
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};
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}
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#endif
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