On Mon, 20 Apr 2009, Mr Ronny Liu wrote:

> I am wondering if it is possible to specify the data port range for an
> active mode transfer when I specify --ftp-port (in binary) or
> CURLOPT_FTPPORT flags.

No it isn't.

>    Also, is there a reason against specifying the port range?

Not really, no. It could match the CURLOPT_LOCALPORTRANGE option.

> If this is not currently possible, what code should I look at to possibly
> implement it?

The TODO mention: http://curl.haxx.se/docs/todo.html#PORT_port_range

The source code: lib/ftp.c:ftp_state_use_port() would be a starting point I
guess.

-- 
  / daniel.haxx.se