Specifies if I/O handler works in inactive mode.
If this property value is
True the I/O Handler works in inactive mode - mode of data passing through.
In this case data are not encrypted and passed as is.
If this property value is False the data are encrypted.
This property can be used in explicit SSL-clients for example on SSL over FTP when unencrypted data have to be send first and SSL-session has to be open only after some time