import socket
import sys
import traceback
import paramiko

# setup logging
paramiko.util.log_to_file('ftp.log')

# SFTP configuration
hostname = 'demo.wftpserver.com'
port = 2222
username = 'demo-user'
password = 'demo-user'

# Files configuration
src_file = 'C:/Home/_Oleg/projects/sftp-ku/research.py'
sftp_base_dir = 'upload/'
out_file_name = 'research4.py'


try:
    t = paramiko.Transport((hostname, port))
    t.connect(None, username, password, gss_host=socket.getfqdn(hostname))
    sftp = paramiko.SFTPClient.from_transport(t)

    dirlist = sftp.listdir('.')
    print("Dirlist: %s" % dirlist)

    sftp.put(src_file, '{}{}'.format(sftp_base_dir, out_file_name))
    t.close()

except Exception as e:
    print('*** Caught exception: %s: %s' % (e.__class__, e))
    traceback.print_exc()
    try:
        t.close()
    except:
        pass

sys.exit(1)