Compatibility with YADE 1.x branches - FTP - send NOOP command

Current Situation

• Upon successful login, YADE issues a NOOP command as a post-login check.
  • FTP servers typically respond with 200 OK or 200 <message>
  • However, some servers reply with only 200 , without any message text.
  • Apache Commons Net, with strict reply parsing enabled (default), treats this truncated reply as malformed and throws an exception.
  • YADE Behavior in branches 1.x
    • The truncated NOOP reply is ignored.
    • No exceptions occur, and operations proceed normally.
  • YADE Behavior in branches 2.x
    • The truncated NOOP reply triggers org.apache.commons.net.MalformedServerReplyException: Truncated server reply: '200 '.

Patch

• Use the cumulative patch provided with YADE-642.