LOGGER.info("Using open server port..." + availableServerSocket);
File ftpRoot = new File (FTP_ROOT_DIR);
ftpRoot.mkdirs();
TestUserManager userManager = new TestUserManager(ftpRoot.getAbsolutePath());
FtpServerFactory serverFactory = new FtpServerFactory();
serverFactory.setUserManager(userManager);
ListenerFactory factory = new ListenerFactory();