Esempio n. 1
0
 private Node AddNode(Node node)
 {
     if (node.State < NodeState.Connected)
     {
         return(null);
     }
     return(_Nodes.AddNode(node));
 }
Esempio n. 2
0
        /// <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");
            }
        }