NAME

       CURLOPT_FTP_USE_EPSV - use EPSV for FTP

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTP_USE_EPSV, long epsv);

DESCRIPTION

       Pass  epsv  as a long. If the value is 1, it tells curl to use the EPSV command when doing
       passive FTP downloads (which it does by default). Using  EPSV  means  that  libcurl  first
       attempts  to  use  the EPSV command before using PASV. If you pass zero to this option, it
       does not use EPSV, only plain PASV.

       The EPSV command is a slightly newer addition to the FTP protocol than  PASV  and  is  the
       preferred  command  to  use  since  it  enables IPv6 to be used. Old FTP servers might not
       support it, which is why libcurl has a fallback mechanism.  Sometimes that fallback is not
       enough and then this option might come handy.

       If the server is an IPv6 host, this option has no effect.

DEFAULT

       1

PROTOCOLS

       This functionality affects ftp only

EXAMPLE

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

           /* let's shut off this modern feature */
           curl_easy_setopt(curl, CURLOPT_FTP_USE_EPSV, 0L);

           res = curl_easy_perform(curl);

           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in curl 7.9.2

RETURN VALUE

       Returns CURLE_OK if FTP is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_FTPPORT(3), CURLOPT_FTP_USE_EPRT(3)