Question

ftp server and client (C windows) using a UDP socket.

The server puts files on the client using CFtpConnection::PutFile

A large file takes several minutes, so the client needs to be able to cancel PutFile().

How do I check for a cancel udp message if PutFile() is busy transferring data? Create another thread….?

Any advice in the right direction is appreciated, thank you.

Answer 1

Since you need some level of control for the transfer process, you can’t go with the high-level approach of PutFile and you ‘ll have to take a more direct role.

Open the remote file with CFtpConnection::OpenFile for writing, which will give you a CInternetFile*. You would then write data using CInternetFile::Write by yourself; this will also give you the option to stop sending data and close the connection at any time.

This page of WinInet documentation mentions a HOWTO and a sample in the MS Knowledge Base, which might be good to look into for an implementation.