PassiveMode Property

Enables or disables passive transfer mode.

Syntax

 ftpclient.getPassiveMode([callback])
 ftpclient.setPassiveMode( passiveMode, [callback])

Default Value

TRUE

Callback

The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).

The callback for the getPassiveMode([callback]) method is defined as:

function(err, data){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'data' is the value returned by the method.

The callback for the setPassiveMode([callback]) method is defined as:

function(err){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'err' has 2 properties which hold detailed information:

err.code
err.message

Remarks

The transfer mode (active or passive) regulates which party is responsible for opening a listening port for data connections. Where passive mode is used, the FTP server is responsible for listening for data connections. In active mode, the listening port is opened by the client.

In today's Internet of firewalls it is a de-facto standard to use the passive mode for FTP transfers.

Data Type

Boolean