public override void OnData(Commands.Data command)
{
Receiving nextState = new Receiving();
Context.SetState(nextState);
nextState.OnCommand(command, Context.GetConnection().RemoteEndpoint);
}
public override void OnCommand(ITFtpCommand command, EndPoint endpoint)
{
if (command is Commands.Data || command is OptionAcknowledgement)
{
// The server acknowledged our read request.
// Fix out remote endpoint
Context.GetConnection().RemoteEndpoint = endpoint;
}
switch (command)
{
case Commands.Data _:
{
if (Context.NegotiatedOptions == null)
{
Context.FinishOptionNegotiation(TransferOptionSet.NewEmptySet());
}
// Switch to the receiving state...
ITransferState nextState = new Receiving();
Context.SetState(nextState);
// ...and let it handle the data packet
nextState.OnCommand(command, endpoint);
break;
}
case OptionAcknowledgement optionAcknowledgement:
// Check which options were acknowledged
Context.FinishOptionNegotiation(new TransferOptionSet(optionAcknowledgement.Options));
// the server acknowledged our options. Confirm the final options
SendAndRepeat(new Acknowledgement(0));
break;
case Error error:
Context.SetState(new ReceivedError(error));
break;
default:
base.OnCommand(command, endpoint);
break;
}
}