How to upload a large file in python via ftp (with monitoring and reconnecting)?

Question

UPDATE # 1

The code in the question works pretty well for a stable connection (like a local network or intranet).

UPDATE # 2

I have implemented a class FTPClientwith ftplib that can:

• track download progress.
• reconnect in case of timeout or disconnect
• performs several file upload attempts
• shows the current download speed.

After reconnecting, the download process from the disconnect point continues (if the FTP server supports it). See my answer below for more details.

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Question

python, (0.3-1.5Gb * 200-300 ) FTP, . ftplib. . , KEEPALIVE, .

with closing(ftplib.FTP()) as ftp:
    try:
        ftp.connect(self.host, self.port, 30*60) #30 mins timeout
        # print ftp.getwelcome()
        ftp.login(self.login, self.passwd)
        ftp.set_pasv(True)
        ftp.sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
        ftp.sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, 75)
        ftp.sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, 60)
        with open(local_filename, 'w+b') as f:
            res = ftp.retrbinary('RETR %s' % orig_filename, f.write)

            if not res.startswith('226 Transfer complete'):
                logging.error('Downloaded of file {0} is not compile.'.format(orig_filename))
                os.remove(local_filename)
                return None

        os.rename(local_filename, self.storage + filename + file_ext)
        ftp.rename(orig_filename, orig_filename + '.copied')

        return filename + file_ext

    except:
            logging.exception('Error during download from FTP')

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Answer 1

, . Stackoverflow , . GitHub (pyFTPclient) - (~ 120 ).

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