public static byte[] EncodeNetworkAddressWithTime(NetworkAddressWithTime networkAddressWithTime)
{
using (var stream = new MemoryStream())
using (var writer = new BinaryWriter(stream))
{
EncodeNetworkAddressWithTime(writer, networkAddressWithTime);
return stream.ToArray();
}
}
public static void EncodeNetworkAddressWithTime(BinaryWriter writer, NetworkAddressWithTime networkAddressWithTime)
{
writer.WriteUInt32(networkAddressWithTime.Time);
EncodeNetworkAddress(writer, networkAddressWithTime.NetworkAddress);
}
public static void EncodeNetworkAddressWithTime(BinaryWriter writer, NetworkAddressWithTime networkAddressWithTime)
{
writer.WriteUInt32((uint)networkAddressWithTime.Time.ToUnixTimeSeconds()); //TODO is time LE or BE on network messages?
EncodeNetworkAddress(writer, networkAddressWithTime.NetworkAddress);
}
private async Task ConnectAndHandshake(Peer peer)
{
peer.OnDisconnect += DisconnectPeer;
if (peer.IsIncoming)
Interlocked.Increment(ref this.incomingCount);
// connect
await peer.ConnectAsync();
// notify peer is connected
PeerConnected?.Invoke(peer);
// setup task to wait for verack
var verAckTask = peer.Receiver.WaitForMessage(x => x.Command == "verack", HANDSHAKE_TIMEOUT_MS);
// setup task to wait for version
var versionTask = peer.Receiver.WaitForMessage(x => x.Command == "version", HANDSHAKE_TIMEOUT_MS);
// start listening for messages after tasks have been setup
peer.Receiver.Listen();
// send our local version
var nodeId = random.NextUInt64(); //TODO should be generated and verified on version message
var currentHeight = this.coreDaemon.CurrentChain.Height;
await peer.Sender.SendVersion(Messaging.GetExternalIPEndPoint(), peer.RemoteEndPoint, nodeId, (UInt32)currentHeight);
// wait for our local version to be acknowledged by the remote peer
// wait for remote peer to send their version
await Task.WhenAll(verAckTask, versionTask);
//TODO shouldn't have to decode again
var versionMessage = versionTask.Result;
var versionPayload = NodeEncoder.DecodeVersionPayload(versionMessage.Payload.ToArray(), versionMessage.Payload.Length);
var remoteAddressWithTime = new NetworkAddressWithTime
(
Time: DateTimeOffset.Now,
NetworkAddress: new NetworkAddress
(
Services: versionPayload.LocalAddress.Services,
IPv6Address: versionPayload.LocalAddress.IPv6Address,
Port: versionPayload.LocalAddress.Port
)
);
// acknowledge their version
await peer.Sender.SendVersionAcknowledge();
}
