public NodesGroup(
Network network,
NodeConnectionParameters connectionParameters = null,
NodeRequirement requirements = null)
{
AllowSameGroup = false;
MaximumNodeConnection = 8;
_Network = network;
cs = new object();
_ConnectedNodes = new NodesCollection();
_ConnectionParameters = connectionParameters ?? new NodeConnectionParameters();
_ConnectionParameters = _ConnectionParameters.Clone();
_Requirements = requirements ?? new NodeRequirement();
_Disconnect = new CancellationTokenSource();
}
public void VersionHandshake(NodeRequirement requirements, CancellationToken cancellationToken = default(CancellationToken))
{
requirements = requirements ?? new NodeRequirement();
using (var listener = CreateListener()
.Where(p => p.IsPayloadTypeOf(typeof(VersionPayload), typeof(RejectPayload), typeof(VerAckPayload))))
{
SendMessageAsync(MyVersion);
var payload = listener.ReceivePayload <Object>(cancellationToken);
if (payload is RejectPayload)
{
throw new ProtocolException("Handshake rejected : " + ((RejectPayload)payload).Reason);
}
var version = (VersionPayload)payload;
_PeerVersion = version;
if (!version.AddressReceiver.Address.Equals(MyVersion.AddressFrom.Address))
{
NodeServerTrace.Warning("Different external address detected by the node " + version.AddressReceiver.Address + " instead of " + MyVersion.AddressFrom.Address);
}
if (version.Version < ProtocolVersion.MIN_PEER_PROTO_VERSION)
{
NodeServerTrace.Warning("Outdated version " + version.Version + " disconnecting");
Disconnect("Outdated version");
return;
}
if (!requirements.Check(version))
{
Disconnect("The peer does not support the required services requirement");
return;
}
SendMessageAsync(new VerAckPayload());
listener.ReceivePayload <VerAckPayload>(cancellationToken);
State = NodeState.HandShaked;
if (Advertize && MyVersion.AddressFrom.Address.IsRoutable(true))
{
SendMessageAsync(new AddrPayload(new NetworkAddress[] {
new NetworkAddress(MyVersion.AddressFrom)
{
Time = DateTimeOffset.UtcNow
}
}));
}
}
}
