private void PeerHandshakeReceived(bool succeeded, PeerMessage message, object state)
{
PeerId id = (PeerId)state;
if (!succeeded)
{
CleanupSocket(id, "Handshaking failed");
return;
}
try
{
message.Handle(id);
// If there are any pending messages, send them otherwise set the queue
// processing as finished.
if (id.QueueLength > 0)
{
id.ConnectionManager.ProcessQueue(id);
}
else
{
id.ProcessingQueue = false;
}
PeerIO.EnqueueReceiveMessage(id.Connection, id.Decryptor, id.TorrentManager.DownloadLimiter, id.Monitor, id.TorrentManager, messageReceivedCallback, id);
// Alert the engine that there is a new usable connection
id.TorrentManager.HandlePeerConnected(id, Direction.Outgoing);
}
catch (TorrentException ex)
{
CleanupSocket(id, ex.Message);
}
}
private void MessageReceived(bool successful, PeerMessage message, object state)
{
PeerId id = (PeerId)state;
if (!successful)
{
id.ConnectionManager.CleanupSocket(id, "Could not receive a message");
return;
}
try
{
PeerMessageEventArgs e = new PeerMessageEventArgs(id.TorrentManager, (PeerMessage)message, Direction.Incoming, id);
id.ConnectionManager.RaisePeerMessageTransferred(e);
message.Handle(id);
id.LastMessageReceived = DateTime.Now;
PeerIO.EnqueueReceiveMessage(id.Connection, id.Decryptor, id.TorrentManager.DownloadLimiter, id.Monitor, id.TorrentManager, messageReceivedCallback, id);
}
catch (TorrentException ex)
{
id.ConnectionManager.CleanupSocket(id, ex.Message);
}
}
void DownloadLogic(int counter)
{
// FIXME: Hardcoded 15kB/sec - is this ok?
if ((DateTime.Now - manager.StartTime) > TimeSpan.FromSeconds(20))
{
foreach (string s in manager.Torrent.GetRightHttpSeeds)
{
string peerId = "-WebSeed-";
peerId = peerId + (webseedCount++).ToString().PadLeft(20 - peerId.Length, '0');
Uri uri = new Uri(s);
// HACK: Don't want to add more than 10 same webseed (sometimes webseeds stuck)
if (manager.Peers.ConnectedPeers.FindAll(p => p.Uri.Host.Equals(uri.Host)).Count > 9)
{
continue;
}
// Dont' want to add more than 2 same webseed if current webseeds is active (speed more than 5Kbs.
if (manager.Peers.ConnectedPeers.FindAll(p => p.Uri.Host.Equals(uri.Host) &&
p.Monitor.DownloadSpeed > 5 * 1024
).Count > 1
)
{
continue;
}
Peer peer = new Peer(peerId, uri);
PeerId id = new PeerId(peer, manager);
HttpConnection connection = new HttpConnection(new Uri(s));
connection.Manager = this.manager;
peer.IsSeeder = true;
id.BitField.SetAll(true);
id.Encryptor = new PlainTextEncryption();
id.Decryptor = new PlainTextEncryption();
id.IsChoking = false;
id.AmInterested = !manager.Complete;
id.Connection = connection;
id.ClientApp = new Software(id.PeerID);
manager.Peers.ConnectedPeers.Add(id);
manager.RaisePeerConnected(new PeerConnectionEventArgs(manager, id, Direction.Outgoing));
PeerIO.EnqueueReceiveMessage(id.Connection, id.Decryptor, Manager.DownloadLimiter, id.Monitor, id.TorrentManager, id.ConnectionManager.messageReceivedCallback, id);
}
}
// Remove inactive peers we haven't heard from if we're downloading
if (manager.State == TorrentState.Downloading && manager.lastCalledInactivePeerManager + TimeSpan.FromSeconds(5) < DateTime.Now)
{
manager.InactivePeerManager.TimePassed();
manager.lastCalledInactivePeerManager = DateTime.Now;
}
// Now choke/unchoke peers; first instantiate the choke/unchoke manager if we haven't done so already
if (manager.chokeUnchoker == null)
{
manager.chokeUnchoker = new ChokeUnchokeManager(manager, manager.Settings.MinimumTimeBetweenReviews, manager.Settings.PercentOfMaxRateToSkipReview);
}
manager.chokeUnchoker.UnchokeReview();
}
void DownloadLogic(int counter)
{
// FIXME: Hardcoded 15kB/sec - is this ok?
if ((DateTime.Now - manager.StartTime) > TimeSpan.FromMinutes(1) && manager.Monitor.DownloadSpeed < 15 * 1024)
{
foreach (string s in manager.Torrent.GetRightHttpSeeds)
{
try
{
string peerId = "-WebSeed-";
peerId = peerId + (webseedCount++).ToString().PadLeft(20 - peerId.Length, '0');
Uri uri = new Uri(s);
Peer peer = new Peer(peerId, uri);
PeerId id = new PeerId(peer, manager);
HttpConnection connection = new HttpConnection(new Uri(s));
connection.Manager = this.manager;
peer.IsSeeder = true;
id.BitField.SetAll(true);
id.Encryptor = new PlainTextEncryption();
id.Decryptor = new PlainTextEncryption();
id.IsChoking = false;
id.AmInterested = !manager.Complete;
id.Connection = connection;
id.ClientApp = new Software(id.PeerID);
manager.Peers.ConnectedPeers.Add(id);
manager.RaisePeerConnected(new PeerConnectionEventArgs(manager, id, Direction.Outgoing));
PeerIO.EnqueueReceiveMessage(id.Connection, id.Decryptor, Manager.DownloadLimiter, id.Monitor, id.TorrentManager, id.ConnectionManager.messageReceivedCallback, id);
}
catch (UriFormatException)
{
logger.Info("Invalid web seed uri '{0}'", s);
}
}
// FIXME: In future, don't clear out this list. It may be useful to keep the list of HTTP seeds
// Add a boolean or something so that we don't add them twice.
manager.Torrent.GetRightHttpSeeds.Clear();
}
// Remove inactive peers we haven't heard from if we're downloading
if (manager.State == TorrentState.Downloading && manager.lastCalledInactivePeerManager + TimeSpan.FromSeconds(5) < DateTime.Now)
{
manager.InactivePeerManager.TimePassed();
manager.lastCalledInactivePeerManager = DateTime.Now;
}
// Now choke/unchoke peers; first instantiate the choke/unchoke manager if we haven't done so already
if (manager.chokeUnchoker == null)
{
manager.chokeUnchoker = new ChokeUnchokeManager(manager, manager.Settings.MinimumTimeBetweenReviews, manager.Settings.PercentOfMaxRateToSkipReview);
}
manager.chokeUnchoker.UnchokeReview();
}
/// <summary>
/// This method is called when the ClientEngine recieves a valid incoming connection
/// </summary>
/// <param name="result"></param>
private void IncomingConnectionAccepted(bool succeeded, int count, object state)
{
PeerId id = (PeerId)state;
try
{
if (!succeeded)
{
var args = new PeerConnectionFailedEventArgs(id.TorrentManager, id.Peer, Direction.Incoming, "Incoming connection coult not be accepted");
id.TorrentManager.RaiseConnectionAttemptFailed(args);
}
bool maxAlreadyOpen = (OpenConnections >= this.MaxOpenConnections) || (id.TorrentManager.OpenConnections >= id.TorrentManager.Settings.MaxConnections);
if (!succeeded || id.Peer.PeerId == engine.PeerId || maxAlreadyOpen)
{
CleanupSocket(id, "Connection was not accepted");
return;
}
if (id.TorrentManager.Peers.ActivePeers.Contains(id.Peer))
{
logger.Error("Already connected to peer {0}", id.Peer);
id.Connection.Dispose();
return;
}
logger.Info("Incoming connection fully accepted {0}, total {1}", id.Peer, OpenConnections);
id.TorrentManager.Peers.AvailablePeers.Remove(id.Peer);
id.TorrentManager.Peers.ActivePeers.Add(id.Peer);
id.TorrentManager.Peers.ConnectedPeers.Add(id);
id.WhenConnected = DateTime.Now;
// Baseline the time the last block was received
id.LastBlockReceived = DateTime.Now;
id.TorrentManager.HandlePeerConnected(id, Direction.Incoming);
// We've sent our handshake so begin our looping to receive incoming message
PeerIO.EnqueueReceiveMessage(id.Connection, id.Decryptor, id.TorrentManager.DownloadLimiter, id.Monitor, id.TorrentManager, messageReceivedCallback, id);
}
catch (Exception e)
{
CleanupSocket(id, e.Message);
}
}
public void InvalidMessage()
{
bool success = true;
ManualResetEvent handle = new ManualResetEvent(false);
Buffer.BlockCopy(BitConverter.GetBytes(IPAddress.HostToNetworkOrder(16)), 0, data, 0, 4);
for (int i = 4; i < 16; i++)
{
data [i] = byte.MaxValue;
}
PeerIO.EnqueueReceiveMessage(Incoming, new PlainTextEncryption(), null, null, null, (successful, count, state) => {
success = successful;
handle.Set();
}, null);
NetworkIO.EnqueueSend(Outgoing, data, 0, 20, null, null, null, delegate { }, null);
Assert.IsTrue(handle.WaitOne(TimeSpan.FromSeconds(4)), "#Should have closed");;
Assert.IsFalse(success, "#1");
}
public void ReceiveTwoKeepAlives()
{
var message = new KeepAliveMessage();
var buffer = message.Encode();
var handle = new AutoResetEvent(false);
NetworkIO.EnqueueSend(Outgoing, buffer, 0, buffer.Length, null, null, null, delegate { }, null);
NetworkIO.EnqueueSend(Outgoing, buffer, 0, buffer.Length, null, null, null, delegate { }, null);
AsyncMessageReceivedCallback callback = (s, m, state) => {
if (s && m is KeepAliveMessage)
{
handle.Set();
}
};
PeerIO.EnqueueReceiveMessage(Incoming, new PlainTextEncryption(), null, null, null, callback, null);
Assert.IsTrue(handle.WaitOne(TimeSpan.FromSeconds(2)), "#Should receive first message");
PeerIO.EnqueueReceiveMessage(Incoming, new PlainTextEncryption(), null, null, null, callback, null);
Assert.IsTrue(handle.WaitOne(TimeSpan.FromSeconds(2)), "#Should receive second message");
}