Factory-like class to create a sequence of data port listeners.
This class can be used as an imput parameter into data port listener set.
Class contructor takes port numbers and creates a sequence of data port listeners with assigned
port from port 1 to port 2 (inclusive).
See Also:com.coldcore.coloradoftp.connection.Connection See Also: Control connections usualy do not eat much network traffic (that is a job of See Also: data connections), so there is no need to control network overhead for this type See Also: of connection.