public void AddPeer(Peer peer)
{
peer.Disconnected += new PeerDisconnectedCallback(peer_Disconnected);
peer.HeIsInterestedChange += new PeerStatusChangeCallback(peer_HeIsInterestedChange);
peer.PieceCancel += new PeerPieceCallback(peer_PieceCancel);
peer.PieceRequest += new PeerPieceCallback(peer_PieceRequest);
}
public PeerListViewItem(BT.Peer peer)
{
this.peer = peer;
this.Text = peer.ToString();
this.SubItems.Add("Leech");
this.SubItems.Add("0");
this.SubItems.Add("0");
this.SubItems.Add("Y");
this.SubItems.Add("N");
this.SubItems.Add("Y");
this.SubItems.Add("N");
this.SubItems.Add("0");
this.SubItems.Add(peer.Information.ClientType.ToString());
this.SubItems.Add(peer.Information.ID.ToString());
peer.BitfieldChange += new BitTorrent.PeerBitfieldChangeCallback(peer_BitfieldChange);
peer.HeIsChokingChange += new BitTorrent.PeerStatusChangeCallback(peer_HeIsChokingChange);
peer.HeIsInterestedChange += new BitTorrent.PeerStatusChangeCallback(peer_HeIsInterestedChange);
peer.IAmChokingChange += new BitTorrent.PeerStatusChangeCallback(peer_IAmChokingChange);
peer.IAmInterestedChange += new BitTorrent.PeerStatusChangeCallback(peer_IAmInterestedChange);
peer.DownThrottle.RateChange += new BitTorrent.RateChangeCallback(peer_DownloadRateChange);
peer.UpThrottle.RateChange +=new BitTorrent.RateChangeCallback(peer_UploadRateChange);
}
public PeerListViewItem(BT.Peer peer)
{
this.peer = peer;
this.Text = peer.ToString();
this.SubItems.Add("Leech");
this.SubItems.Add("0");
this.SubItems.Add("0");
this.SubItems.Add("Y");
this.SubItems.Add("N");
this.SubItems.Add("Y");
this.SubItems.Add("N");
this.SubItems.Add("0");
this.SubItems.Add(peer.Information.ClientType.ToString());
this.SubItems.Add(peer.Information.ID.ToString());
peer.BitfieldChange += new BitTorrent.PeerBitfieldChangeCallback(peer_BitfieldChange);
peer.HeIsChokingChange += new BitTorrent.PeerStatusChangeCallback(peer_HeIsChokingChange);
peer.HeIsInterestedChange += new BitTorrent.PeerStatusChangeCallback(peer_HeIsInterestedChange);
peer.IAmChokingChange += new BitTorrent.PeerStatusChangeCallback(peer_IAmChokingChange);
peer.IAmInterestedChange += new BitTorrent.PeerStatusChangeCallback(peer_IAmInterestedChange);
peer.DownThrottle.RateChange += new BitTorrent.RateChangeCallback(peer_DownloadRateChange);
peer.UpThrottle.RateChange += new BitTorrent.RateChangeCallback(peer_UploadRateChange);
}
public PieceRequest( Peer peer, int pieceId, int begin, int length )
{
this.Peer = peer;
this.PieceId = pieceId;
this.Begin = begin;
this.Length = length;
}
private void peer_Disconnected(Peer peer)
{
lock ( this.interestedPeers.SyncRoot )
{
if (this.interestedPeers.Contains(peer))
this.interestedPeers.Remove(peer);
}
}
public void AddPeer(Peer peer)
{
peer.Disconnected += new PeerDisconnectedCallback(peer_Disconnected);
lock ( this )
{
this.peerList.Add( peer );
this.socketList.Add( peer.Socket );
}
}
private void AddPeerBitfieldToPieceCount( Peer peer )
{
// add to peer-piece index
if ( peer.BitField != null )
{
for ( int i = 0; i < this.mPeerPieceList.Length; ++i )
{
if ( peer.BitField.Get( i ) )
this.mPeerPieceList[ i ]++;
}
}
}
private void RemovePeer( BT.Peer peer )
{
foreach ( PeerListViewItem item in this.peerListView.Items )
{
if ( item.Peer.Equals( peer ) )
{
item.UnhookPeerEvents();
this.peerListView.Items.Remove(item);
this.peerListView.Refresh();
break;
}
}
}
private void OnPeerConnected(BT.Torrent torrent, BT.Peer peer, bool connected)
{
if (connected)
{
this.peerListView.Invoke( new AddNewPeerDelegate( this.peerListView.Items.Add ), new object[] { new PeerListViewItem( peer ) } );
// this.peerListView.Items.Add(new PeerListViewItem(peer));
}
else
{
LogDebugMessage( "Peer disconnected from mainform.cs: " + peer.ToString() );
this.peerListView.Invoke( new RemovePeerDelegate( RemovePeer ), peer );
}
}
private void peer_HeIsInterestedChange(Peer peer, bool newStatus)
{
lock ( this.interestedPeers.SyncRoot )
{
if (newStatus)
{
if (!this.interestedPeers.Contains(peer))
this.interestedPeers.Add(peer);
}
else
{
if (this.interestedPeers.Contains(peer))
this.interestedPeers.Remove(peer);
}
}
}
private void peer_Disconnected(Peer peer)
{
lock ( this.mPeers )
{
this.mPeers.Remove( peer );
}
peer.Disconnected -= new PeerDisconnectedCallback(peer_Disconnected);
if (this.PeerConnected != null)
this.PeerConnected(this, peer, false);
}
public void SendPieceRequestToPeer( Peer peer, int pieceId, int begin, int length )
{
if ( !this.mDownloadingPeers.Contains( peer ) )
this.mDownloadingPeers.Add( peer );
if ( this.mPeersAvailableToDownload.Contains( peer ) )
this.mPeersAvailableToDownload.Remove( peer );
if ( !mCurrentlyDownloadingPieces.ContainsKey( pieceId ) )
{
Piece piece = new Piece( this.mTorrent.Metainfo, pieceId );
mCurrentlyDownloadingPieces.Add( pieceId, piece );
}
peer.SendPieceRequest( pieceId, begin, length );
}
private void peer_IAmChokingChange(BitTorrent.Peer peer, bool newStatus)
{
SetSubItemTextAsync(4, newStatus ? "Y" : "N");
}
private void peer_BitfieldChange( Peer peer, int pieceId )
{
if ( pieceId != -1 )
{
// new piece came in
this.mPeerPieceList[ pieceId ]++;
}
else
{
// whole bitfield has changed, remove the old peer information then add the new one
RemovePeerBitfieldFromPieceCount( peer );
AddPeerBitfieldToPieceCount( peer );
}
}
public bool IsPeerDownloading( Peer peer )
{
return mDownloadingPeers.Contains( peer );
}
private void peer_Disconnected( Peer peer )
{
peer.BitfieldChange -= new PeerBitfieldChangeCallback( peer_BitfieldChange );
peer.Disconnected -= new PeerDisconnectedCallback( peer_Disconnected );
peer.HeIsChokingChange -= new PeerStatusChangeCallback( peer_HeIsChokingChange );
peer.PieceIncoming -= new PeerPieceCallback( peer_PieceIncoming );
if ( this.mDownloadingPeers.Contains( peer ) )
this.mDownloadingPeers.Remove( peer );
if ( this.mPeersAvailableToDownload.Contains( peer ) )
this.mPeersAvailableToDownload.Remove( peer );
foreach ( DownloadStrategy strategy in mStrategies )
{
strategy.peer_Disconnected( strategy == mActiveStrategy, peer );
}
}
public static void SetInterestedOnPeerIfNecessary(DownloadStrategyManager manager, Peer peer)
{
SetInterestedOnPeerIfNecessary(manager, peer, -1);
}
public void peer_Disconnected(bool isActive, Peer peer)
{
}
private void RemovePeerBitfieldFromPieceCount( Peer peer )
{
// remove from peer-piece index
if ( peer.BitField != null )
{
for ( int i = 0; i < this.mPeerPieceList.Length; ++i )
{
if ( peer.BitField.Get( i ) )
this.mPeerPieceList[ i ]--;
}
}
}
private void peer_HeIsChokingChange( Peer peer, bool choked )
{
// remove from pieces downloading if downloading
if ( choked )
{
if ( this.mDownloadingPeers.Contains( peer ) )
this.mDownloadingPeers.Remove( peer );
if ( this.mPeersAvailableToDownload.Contains( peer ) )
this.mPeersAvailableToDownload.Remove( peer );
}
else
{
if ( !this.mPeersAvailableToDownload.Contains( peer ) )
this.mPeersAvailableToDownload.Add( peer );
}
foreach ( DownloadStrategy strategy in mStrategies )
{
strategy.peer_HeIsChokingChange( strategy == mActiveStrategy, peer, choked );
}
}
public void HookPeerEvents( Peer peer )
{
peer.BitfieldChange += new PeerBitfieldChangeCallback( peer_BitfieldChange );
peer.Disconnected += new PeerDisconnectedCallback( peer_Disconnected );
}
public void SendPieceCancelToPeer( Peer peer, int pieceId, int begin, int length )
{
if ( this.mDownloadingPeers.Contains( peer ) )
this.mDownloadingPeers.Remove( peer );
if ( !this.mPeersAvailableToDownload.Contains( peer ) )
this.mPeersAvailableToDownload.Add( peer );
peer.SendPieceCancel( pieceId, begin, length );
}
private void peer_PieceRequest(Peer peer, int pieceId, int begin, int length, byte[] data)
{
// if i am choking, ignore
if (!peer.AmIChoking)
{
this.incomingRequests.Add( new PieceRequest(peer, pieceId, begin, length) );
// TODO: check if we can serve the request
// TODO: make more efficient than loading the whole piece each time
IO.MemoryStream stream = new IO.MemoryStream(this.infofile.GetPieceLength(pieceId));
this.downloadFile.LoadFromFile(pieceId, stream);
stream.Seek(begin, IO.SeekOrigin.Begin);
peer.SendPiece(pieceId, begin, length, stream, new PeerPieceCallback(PieceSendFinished));
}
}
private void PieceSendFinished(Peer peer, int pieceId, int begin, int length, byte[] data)
{
foreach (PieceRequest pieceRequest in this.incomingRequests)
{
if (pieceRequest.Peer.Equals(peer) && pieceRequest.PieceId == pieceId && pieceRequest.Begin == begin && pieceRequest.Length == length)
{
this.incomingRequests.Remove(pieceRequest);
break;
}
}
if (this.PieceSectionFinished != null)
this.PieceSectionFinished(pieceId, begin, length);
}
public static void SetInterestedOnPeerIfNecessary(DownloadStrategyManager manager, Peer peer, int pieceId)
{
if (pieceId >= 0)
{
// new piece came in
if (!manager.Torrent.DownloadFile.Bitfield.Get(pieceId))
{
peer.AmIInterested = true;
}
}
else
{
// whole bitfield has changed
if (DoesPeerHavePieceWeDont(manager, peer))
{
peer.AmIInterested = true;
}
}
}
public void HookPeerEvents( Peer peer )
{
peer.BitfieldChange += new PeerBitfieldChangeCallback( peer_BitfieldChange );
peer.Disconnected += new PeerDisconnectedCallback( peer_Disconnected );
peer.HeIsChokingChange += new PeerStatusChangeCallback( peer_HeIsChokingChange );
peer.PieceIncoming += new PeerPieceCallback( peer_PieceIncoming );
mPieceCounter.HookPeerEvents( peer );
}
private void peer_Disconnected( Peer peer )
{
RemovePeerBitfieldFromPieceCount( peer );
peer.BitfieldChange -= new PeerBitfieldChangeCallback( peer_BitfieldChange );
peer.Disconnected -= new PeerDisconnectedCallback( peer_Disconnected );
}
private void peer_PieceCancel(Peer peer, int pieceId, int begin, int length, byte[] data)
{
for (int i=0; i<this.incomingRequests.Count; ++i)
{
PieceRequest request = (PieceRequest)this.incomingRequests[i];
if (request.Peer.Equals(peer) && request.PieceId == pieceId && request.Begin == begin && request.Length == length)
{
this.incomingRequests.RemoveAt(i);
break;
}
}
}
private void peer_Disconnected(Peer peer)
{
if (this.peerList.Contains(peer))
this.peerList.Remove(peer);
if (this.socketList.Contains(peer.Socket))
this.socketList.Remove(peer.Socket);
}
private void AddPeer(Peer peer)
{
peer.BlockRequested += HandleBlockRequested;
peer.BlockCancelled += HandleBlockCancelled;
peer.BlockReceived += HandleBlockReceived;
peer.Disconnected += HandlePeerDisconnected;
peer.StateChanged += HandlePeerStateChanged;
peer.Connect();
if (!Peers.TryAdd(peer.Key, peer))
peer.Disconnect();
}
private void peer_BitfieldChange( Peer peer, int pieceId )
{
foreach ( DownloadStrategy strategy in mStrategies )
{
strategy.peer_BitfieldChange( strategy == mActiveStrategy, peer, pieceId );
}
}
private void peer_BitfieldChange(BitTorrent.Peer peer, int pieceId)
{
SetSubItemTextAsync(1, peer.IsSeed ? "Seed" : "Leech");
SetSubItemTextAsync(8, peer.BitField.PercentageTrue.ToString("0.0"));
}
// Called by the Session class for peers connecting through the server and in StartPeerConnectionThread() method for peers
// connected to directly
private void AddPeerPrivate(Sockets.Socket socket, Sockets.NetworkStream netStream, PeerInformation peerInformation)
{
try
{
if ( Config.ActiveConfig.MaxPeersConnected < this.mPeers.Count )
{
socket.Close();
return;
}
bool connect = true;
if (Config.ActiveConfig.OnlyOneConnectionFromEachIP)
{
foreach ( Peer connectedPeer in this.mPeers )
{
if (connectedPeer.Information.IP.Equals(peerInformation.IP))
{
connect = false;
break;
}
}
}
if (!connect)
{
socket.Close();
return;
}
if (!this.downloadFile.Bitfield.AllFalse)
PeerProtocol.SendBitfieldMessage(netStream, this.downloadFile);
Peer peer = new Peer(this.infofile, this.downloadFile, socket, netStream, peerInformation);
peer.Disconnected += new PeerDisconnectedCallback(peer_Disconnected);
Config.LogDebugMessage("Connection accepted from: " + peer.ToString());
// add to download and upload manager
this.mDownloadStrategy.HookPeerEvents(peer);
this.uploadManager.AddPeer(peer);
this.peerManager.AddPeer(peer);
if (this.PeerConnected != null)
this.PeerConnected(this, peer, true);
this.mPeers.Add( peer );
}
catch ( System.Exception e )
{
Config.LogException( e );
}
}
private void peer_IAmInterestedChange(BitTorrent.Peer peer, bool newStatus)
{
SetSubItemTextAsync(5, newStatus ? "Y" : "N");
}
private void peer_PieceIncoming( Peer peer, int pieceId, int begin, int length, byte[] data )
{
// save the piece data then inform the strategies
if ( !mCurrentlyDownloadingPieces.ContainsKey( pieceId ) )
{
Config.LogDebugMessage( "INVALID PIECE INCOMING: " + pieceId );
return;
}
Piece piece = mCurrentlyDownloadingPieces[ pieceId ];
piece.Write( data, 0, length, begin );
if ( !peer.HeIsChoking && !this.mPeersAvailableToDownload.Contains( peer ) )
this.mPeersAvailableToDownload.Add( peer );
if ( mDownloadingPeers.Contains( peer ) )
mDownloadingPeers.Remove( peer );
if ( piece.FullyDownloaded )
{
IO.MemoryStream pstream = new IO.MemoryStream( this.mTorrent.Metainfo.GetPieceLength( pieceId ) );
piece.Read( pstream, this.mTorrent.Metainfo.GetPieceLength( pieceId ), 0 );
pstream.Seek( 0, IO.SeekOrigin.Begin );
if ( mCurrentlyDownloadingPieces.ContainsKey( pieceId ) )
mCurrentlyDownloadingPieces.Remove( pieceId );
if ( this.mTorrent.DownloadFile.SaveToFile( pieceId, pstream ) )
{
// Piece successfully downloaded, inform strategies and update other peers
foreach ( DownloadStrategy strategy in mStrategies )
{
strategy.peer_PieceFinished( strategy == mActiveStrategy, peer, pieceId );
}
if ( this.mTorrent.DownloadFile.Bitfield.AllTrue )
{
foreach ( DownloadStrategy strategy in mStrategies )
{
strategy.OnDownloadFinished( strategy == mActiveStrategy );
}
}
// piece just finished, announce to everyone we have it
List<Peer> disconnectPeers = new List<Peer>();
foreach ( Peer ipeer in this.mTorrent.Peers )
{
try
{
ipeer.SendHaveMessage( pieceId );
}
catch ( System.Exception e )
{
Config.LogException( e );
disconnectPeers.Add( ipeer );
}
}
foreach ( Peer ipeer in disconnectPeers )
{
ipeer.Disconnect();
}
this.mBytesDownloaded += this.mTorrent.Metainfo.GetPieceLength( pieceId );
}
else
{ // bad data has been sent by a peer TODO: ban?
}
}
foreach ( DownloadStrategy strategy in mStrategies )
{
strategy.peer_PieceSectionFinished( strategy == mActiveStrategy, peer, pieceId, begin, length );
}
}
