NAME

       CURLOPT_FTP_SKIP_PASV_IP - ignore the IP address in the PASV response

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTP_SKIP_PASV_IP, long skip);

DESCRIPTION

       Pass  a  long.  If  skip  is  set to 1, it instructs libcurl to not use the IP address the
       server suggests in its 227-response to libcurl's PASV command when  libcurl  connects  the
       data  connection.  Instead  libcurl  reuses  the  same  IP address it already uses for the
       control connection. It still uses the port number from the 227-response.

       This option allows libcurl to work around broken server  installations  or  funny  network
       setups  that  due  to NATs, firewalls or incompetence report the wrong IP address. Setting
       this option also reduces the risk for various sorts of client abuse by malicious servers.

       This option has no effect if PORT, EPRT or EPSV is used instead of PASV.

DEFAULT

       1 since 7.74.0, was 0 before then.

PROTOCOLS

       FTP

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/file.txt");

           /* please ignore the IP in the PASV response */
           curl_easy_setopt(curl, CURLOPT_FTP_SKIP_PASV_IP, 1L);
           res = curl_easy_perform(curl);

           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in 7.14.2

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_FTPPORT(3), CURLOPT_FTP_USE_EPRT(3)