FTP FEAT command

By default, FTPRush sends a FEAT command during the login period, some server will returns a 500 error code, and some server will returns the response like below:

211-Features:
MDTM
REST STREAM
SIZE
MLST type*;size*;modify*;
MLSD
AUTH SSL
AUTH TLS
UTF8
CLNT
MFMT
211 End


When the server returns the reponse, our FTP client recogines them automatically and try to using the new feature that server supports.

For example, normally FTP clients do listing directory by sending the LIST command, but now the client finds MLSD command in the server response, then it will sends MLSD command instead of LIST command.