CURLOPT_FTPPORT(3)

CURLOPT_FTPPORT(3)  curl_easy_setopt options   CURLOPT_FTPPORT(3)

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 ver-
     sion by setting this option to NULL.

     The application does not have  to  keep  the  string  around
     after setting this option.

DEFAULT

     NULL

PROTOCOLS

     FTP

libcurl 7.58.0      Last change: May 30, 2017                   1

CURLOPT_FTPPORT(3)  curl_easy_setopt options   CURLOPT_FTPPORT(3)

EXAMPLE

     CURL *curl = curl_easy_init();
     if(curl) {
       curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/old-server/file.txt");
       curl_easy_setopt(curl, CURLOPT_FTPPORT, "-");
       ret = curl_easy_perform(curl);
       curl_easy_cleanup(curl);
     }

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),

libcurl 7.58.0      Last change: May 30, 2017                   2