I am sending files using the Curl (7.21.6) multi interface via SFTP. I want to make sure that I perform some logic exactly once IFF the files were transferred successfully.
So where should I place this logic? I could place this logic in the progress_callback function. It would execute in the case that ultotal == ulnow. Then it would set a flag so it doesn't repeat.. Or I could place it in the read_callback function. It would execute just before call back returned zero. But both approaches have drawbacks: - I'm concerned that a timing issue may cause the transfer to complete before a progress callback happens. So it might never be called in the case ultotal == ulnow. - Doing the logic in the read callback isn't really a guarantee that the file has transferred fully. The connection might break after the read_callback returns 0 but before the last chunk of data is actually sent. So when/where do others place this type of logic? - Saqib
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