You can set Deva xFTP to maintain an active connection to a server even if you aren't currently sending commands or making transfers, by using Smart Keep Alive (SKA). SKA sends commands at random intervals to the FTP server, maintaining an active connection.
From the Deva xFTP menu, select Tools > Options.
Select the Smart Keep Alive option.
Enable Smart Keep Alive (SKA)
Select this to automatically send commands to a server to keep a connection open, and to make all the SKA options available.
Clear this check box to disable SKA and to disable all SKA options.
Start SKA n seconds after the last command
Set how soon SKA begins after transfers and other activities have stopped. You can start SKA immediately or after 1,000 seconds (just under 17 minutes).
Maintain SKA for n minutes
Choose how long SKA sends commands to keep a connection open. You can set this for as little as one minute, and as much as 1,000 minutes (just under 17 hours).
Send command at random intervals between n and n seconds
For after SKA has started, choose the shortest and longest time Deva xFTP will wait before sending a command to keep the connection open. You can choose to set times as low as zero seconds up to 1,000 seconds (just under 17 minutes). Between 15 and 60 seconds are the defaults.
Commands
Select Add to include new FTP commands in the list of possible commands sent to keep a connection open. Deva xFTP uses the listed commands.
Choose Remove after selecting a command in the list to exclude that command from the list of commands sent to keep a connection open.
If disconnected, auto-reconnect within n seconds
Select this to have Deva xFTP attempt a new connection with a server that has closed a connection. Choose a delay time between zero and 100 seconds.
Clear this check box if you don't want Deva xFTP to automatically attempt a new connection.
Select the Do not record activity in the log file check box to make all the SKA information in the log file, text log file, or log pane invisible. The SKA information does not appear in the log file, text log file, or log pane.
Clear the Do not record activity in the log file check box to view the SKA information in the log file, text log file, or log pane.
Note:
The Do not record activity in the log file check box is selected by default.