Qt 5.15.2 QNetworkAccessManager FTP client connection problem to local Ubuntu server

[duygu]

Hello All,
Having a problem with my FTP client that I've built with Qt 5.15.2. This client will update the .bin files of the Ubuntu FTP server. So far;

• I've installed an FTP server on Ubuntu 20.04 with VSFTPD, tested it with FileZilla both with username/password and anonymously. It's working well.

• As a second step, I've built an FTP client with Qt 5.15.2 QNetworkAccessManager, tested it with a web-based FTP server, and connected without any error message. Uploaded a random file.

• Finally now, trying to connect with my FTP Client to the Ubuntu server with no success. Receiving the below error message:
  QNetworkReply::ContentOperationNotPermittedError

Do you have any suggestions about it? Is there any chronic issue with Qt for FTP clients/servers? Especially local ones?

Thanks in advance.

[ChrisW67]

This useful?
https://stackoverflow.com/questions/16877363/file-upload-error-with-qnetworkaccessmanager

[duygu]

Thanks for your reply, I have used the QUrl with and without the file name in it. None of them had success. But I haven't tested QFTP. And I'm not sure if this advice is for speeding up the QFTP or making work QNetworkAccessManager? Should I come to terms with the QNetworkAccessManager version never works?

[LuisGomes]

I'm having a similar issue with NetworkAccessManager uploading a file to an FTP, i'm getting "QNetworkReply::ContentAccessDenied".
Have you found a solution?