public void Cancel(TftpErrorPacket reason)
{
if (reason == null)
{
throw new ArgumentNullException("reason");
}
lock (this)
{
state.OnCancel(reason);
}
}
public void OnCancel(TftpErrorPacket reason)
{
TftpTrace.Trace(GetStateName() + " OnCancel: " + reason, transfer);
decoratee.OnCancel(reason);
}