NAME

       CURLOPT_FTPPORT - make FTP transfer active

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTPPORT, char *spec);

DESCRIPTION

       Pass  a pointer to a zero terminated string as parameter. It specifies that the FTP transfer will be made
       actively and the given string will be used to get the IP address to use for the FTP PORT instruction.

       The PORT instruction tells the remote server to connect to our specified IP address. The string may be  a
       plain  IP  address,  a  host  name, a network interface name (under Unix) or just a '-' symbol to let the
       library use your system's default IP address. Default FTP operations are  passive,  and  thus  won't  use
       PORT.

       The  address  can  be followed by a ':' to specify a port, optionally followed by a '-' to specify a port
       range.  If the port specified is 0, the operating system will pick a free port.  If a range  is  provided
       and  all  ports in the range are not available, libcurl will report CURLE_FTP_PORT_FAILED for the handle.
       Invalid port/range settings are ignored.  IPv6 addresses followed by a port or portrange have  to  be  in
       brackets.  IPv6 addresses without port/range specifier can be in brackets.

       Examples with specified ports:

         eth0:0
         192.168.1.2:32000-33000
         curl.se:32123
         [::1]:1234-4567

       You disable PORT again and go back to using the passive version by setting this option to NULL.

DEFAULT

       NULL

PROTOCOLS

       FTP

EXAMPLE

       TODO

AVAILABILITY

       Port range support was added in 7.19.5

RETURN VALUE

       Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there
       was insufficient heap space.

SEE ALSO

       CURLOPT_FTP_USE_EPRT(3), CURLOPT_FTP_USE_EPSV(3),