On Sat, 5 Nov 2016, Maurice Lemarin wrote:

> I'd be glad being advise how to do it right in order to be able to read
> different parts of the same remote file through a single FTP control session
> (and of course relying on many data sessions).

Here's the comment that explains it:

  /* we have just sent ABOR and there is no reliable way to check if it
     was successful or not; we have to close the connection now */

... so you're doing range requests with FTP at this cost.

-- 
  / daniel.haxx.se
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