I'm now using MINA FtpServer for the Integration Tests of Apache mavens wagon-ftp. While upgrding from a 8 year old avalon based ftpserver jar, I figured that a unit test is broken.
This has to do with FtpServer returning a 200 state which is imo invalid.
According to the officla RFC http://www.faqs.org/rfcs/rfc959.html STAT may only return the following codes:
211, 212, 213
500, 501, 502, 421, 530
I think returning 200 (command ok) after a STAT command is a bug.