private void OnShutdownMessage(IPeer peer, ShutdownMessage message)
{
var channel = _channelService.Channels.SingleOrDefault(c => c.ChannelId == message.ChannelId.ToHex());
if (channel == null)
{
_logger.LogDebug($"Remote sent us a {nameof(ShutdownMessage)}, but there is no matching channel.");
peer.Messaging.Send(ErrorMessage.UnknownChannel(message.ChannelId));
return;
}
if (channel.RemoteChannelParameters.ShutdownScriptPubKey != null &&
!channel.RemoteChannelParameters.ShutdownScriptPubKey.SequenceEqual(message.ScriptPubKey))
{
_channelLoggingService.LogError(channel, LocalChannelError.InvalidShutdownScriptPubKey, "Received shutdown message with invalid ShutdownScriptPubKey. Will do an unilateral close");
channel.CloseReason = CloseReason.InvalidShutdownPubKey;
UnilateralClose(channel);
return;
}
channel.RemoteChannelParameters.ShutdownScriptPubKey = message.ScriptPubKey;
if (channel.State == LocalChannelState.NormalOperation)
{
channel.CloseReason = CloseReason.RemoteMutualClose;
RespondWithShutdown(peer, channel, message);
}
else if (channel.State == LocalChannelState.Shutdown ||
channel.State == LocalChannelState.ClosingSigned)
{
RespondWithClosingSigned(peer, channel);
}
_channelService.UpdateChannel(channel);
}
public void Handle(IPeer peer, FundingSignedMessage message, PendingChannel pendingChannel)
{
var channel = pendingChannel.Channel;
var oldState = channel.State;
var signature = SignatureConverter.RawToTransactionSignature(message.Signature);
if (!_commitmentService.IsValidRemoteCommitmentSignature(channel, signature))
{
_channelLoggingService.LogError(channel, LocalChannelError.InvalidCommitmentSignature, $"Remote {peer.NodeAddress} sent us an invalid commitment signature");
string error = "Invalid commitment transaction signature.";
channel.State = LocalChannelState.FundingFailed;
peer.Messaging.Send(new ErrorMessage(message.ChannelId, error));
throw new ChannelException(error, channel);
}
channel.LocalCommitmentTxParameters.RemoteSignature = signature;
channel.State = LocalChannelState.FundingSigned;
_channelService.AddChannel(peer, channel);
_fundingService.BroadcastFundingTransaction(channel);
_blockchainMonitorService.WatchForTransactionId(channel.FundingTransactionId, (ushort)channel.MinimumDepth);
_channelService.RemovePendingChannel(pendingChannel);
_channelLoggingService.LogStateUpdate(channel, oldState);
}