This command is sent to determine if the file already exists on the FTP server.
It relates to the option in the File Transfer Rules dialog
[ ] Request file size/date prior to transfer
When this setting is checked FlashFXP will send the MLST (if supported) or the SIZE command to determine if the file exists.
Depending on your situation you can disable this feature to speed up FlashFXP.
If the FTP server has multiple users with access to the files then this setting can help prevent uploading over a file that someone in another FTP session might of uploaded after the directory listing was obtained.
|