private Node AddNode(Node node)
{
if (node.State < NodeState.Connected)
{
return(null);
}
return(_Nodes.AddNode(node));
}
/// <summary>
/// Fill the PeerTable with fresh addresses
/// </summary>
public void DiscoverPeers(int peerToFind = 990)
{
TraceCorrelation traceCorrelation = new TraceCorrelation(NodeServerTrace.Trace, "Discovering nodes");
List <Task> tasks = new List <Task>();
using (traceCorrelation.Open())
{
while (CountPeerRequired(peerToFind) != 0)
{
NodeServerTrace.PeerTableRemainingPeerToGet(CountPeerRequired(peerToFind));
CancellationTokenSource cancellation = new CancellationTokenSource(TimeSpan.FromSeconds(40));
var peers = PeerTable.GetActivePeers(1000);
if (peers.Length == 0)
{
PopulateTableWithDNSNodes();
PopulateTableWithHardNodes();
peers = PeerTable.GetActivePeers(1000);
}
CancellationTokenSource peerTableFull = new CancellationTokenSource();
NodeSet connected = new NodeSet();
try
{
Parallel.ForEach(peers, new ParallelOptions()
{
MaxDegreeOfParallelism = 5,
CancellationToken = peerTableFull.Token,
}, p =>
{
Node n = null;
try
{
n = GetNodeByPeer(p, cancellation.Token);
if (n.State < NodeState.HandShaked)
{
connected.AddNode(n);
n.VersionHandshake(cancellation.Token);
}
n.SendMessage(new GetAddrPayload());
Thread.Sleep(2000);
}
catch (Exception)
{
if (n != null)
{
n.Disconnect();
}
}
if (CountPeerRequired(peerToFind) == 0)
{
peerTableFull.Cancel();
}
else
{
NodeServerTrace.Information("Need " + CountPeerRequired(peerToFind) + " more peers");
}
});
}
catch (OperationCanceledException)
{
}
finally
{
connected.DisconnectAll();
}
}
NodeServerTrace.Trace.TraceInformation("Peer table is now full");
}
}