Cancel Enhancement

Question

I think it would be beneficial if there was a public method in FTPClient called:

public boolean getCancelTransfer();

This way after a transfer completes, it could be programmatically checked from the FTP object whether a cancel was requested.

Answer 1

Alternatively, it would be nice if calling cancel and the transfer actually cancels (eg connection is not idle or race condition allowed put()/get() to finish before calling cancel) would throw an FTPTransferCancelledException to be caught, that way one could know that there is an incomplete transfer somewhere.

Answer 2

Using an exception to indicate a transfer is incomplete is a good idea. To avoid breaking the current interface, we could make FTPTransferCancelledException a subclass of FTPException so that it could be caught explicitly if required.

Alternatively, it would be nice if calling cancel and the transfer actually cancels (eg connection is not idle or race condition allowed put()/get() to finish before calling cancel) would throw an FTPTransferCancelledException to be caught, that way one could know that there is an incomplete transfer somewhere.