public override void Choke(PeerId id)
{
base.Choke(id);
advertisedPieces.RemoveAll(delegate(SeededPiece p) { return(p.Peer == id); });
// Place the peer at the end of the list so the rest of the peers
// will get an opportunity to unchoke before this peer gets tried again
ChokeData data = peers.Find(delegate(ChokeData d) { return(d.Peer == id); });
peers.Remove(data);
peers.Add(data);
}
void TryChoke(ChokeData data)
{
// Already choked
if (data.Peer.AmChoking)
{
return;
}
if (!data.Peer.IsInterested)
{
// Choke him if he's not interested
Choke(data.Peer);
}
else if (!advertisedPieces.Exists(delegate(SeededPiece p) { return(p.Peer == data.Peer); }))
{
// If we have no free slots and peers are waiting, choke after 30 seconds.
// FIXME: Choke as soon as the next piece completes *or* a larger time limit *and*
// at least one piece has uploaded.
data.LastChoked = DateTime.Now;
Choke(data.Peer);
}
}
void TryUnchoke(ChokeData data)
{
// Already unchoked
if (!data.Peer.AmChoking)
{
return;
}
// Don't unchoke if he's not interested
if (!data.Peer.IsInterested)
{
return;
}
// Don't unchoke if we are have maxed our slots
if (manager.UploadingTo >= manager.Settings.UploadSlots)
{
return;
}
data.LastUnchoked = DateTime.Now;
Unchoke(data.Peer);
}
void TryAdvertisePiece(ChokeData data)
{
// If we are seeding to this peer and we have a peer waiting to unchoke
// don't advertise more data
if (!data.Peer.AmChoking && PendingUnchoke)
{
return;
}
int advertised = advertisedPieces.FindAll(delegate(SeededPiece p) { return(p.Peer == data.Peer); }).Count;
int max = MaxAdvertised;
if (manager.UploadingTo < manager.Settings.UploadSlots)
{
max = MaxAdvertised;
}
else if (data.ShareRatio < 0.25)
{
max = 1;
}
else if (data.ShareRatio < 0.35)
{
max = 2;
}
else if (data.ShareRatio < 0.50)
{
max = 3;
}
else
{
max = MaxAdvertised;
}
if (advertised >= max)
{
return;
}
// List of pieces *not* in the swarm
temp.From(bitfield).Not();
// List of pieces that he wants that aren't in the swarm
temp.NAnd(data.Peer.BitField);
// Ignore all the pieces we've already started sharing
foreach (SeededPiece p in advertisedPieces)
{
temp[p.Index] = false;
}
int index = 0;
while (advertised < max)
{
// Get the index of the first piece we can send him
index = temp.FirstTrue(index, temp.Length);
// Looks like he's not interested in us...
if (index == -1)
{
return;
}
advertised++;
data.TotalPieces++;
data.CurrentPieces[index] = true;
advertisedPieces.Add(new SeededPiece(data.Peer, index, data.Peer.TorrentManager.Torrent.PieceLength / Piece.BlockSize));
data.Peer.Enqueue(new HaveMessage(index));
index++;
}
}