MODE FTP command

11/14/2018 4:09 PM

11/14/2018 4:09 PM

This article describes the use of the Transfer Mode (MODE) FTP command.

Serv-U Managed File Transfer & Serv-U FTP Server

This command changes the transfer mode. The argument is a single Telnet character code specifying the data transfer modes described in the Section on Transmission Modes.

The following codes are assigned for transfer modes:

S - Stream
B - Block
C - Compressed
Z - Deflate

The default transfer mode is Stream. Mode Z (commonly referred to as "on-the-fly" compression) is defined in an IETF draft.

Common responses

• 200 FTP response code
• 421 FTP response code
• 500 FTP response code
• 501 FTP response code
• 504 FTP response code
• 530 FTP response code