Author Ivan.Pozdeev
Recipients Ivan.Pozdeev, giampaolo.rodola, peterpan
Date 2016-12-09.19:09:00
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The solution for the OP's problem is:

* after closing the data socket (whether it was returned by `transfercmd()'/`ntransfercmd()' or opened manually), an additional `FTP.getresp()'/`FTP.voidresp()' is required to process the 226 response.

The built-in `retrbinary()' and `retrlines()' do implement this logic.

But the documentation doesn't mention this requirement in `transfercmd()'/ntransfercmd()` entries (and `getresp()'/`voidresp()' are undocumented outright).

`urllib' authors have fallen into this same trap: they use `transfercmd' directly but don't call `voidresp()' afterwards.
Date User Action Args
2016-12-09 19:09:00Ivan.Pozdeevsetrecipients: + Ivan.Pozdeev, giampaolo.rodola, peterpan
2016-12-09 19:09:00Ivan.Pozdeevsetmessageid: <>
2016-12-09 19:09:00Ivan.Pozdeevlinkissue25458 messages
2016-12-09 19:09:00Ivan.Pozdeevcreate