manpagez: man pages & more
man CURLOPT_FTP_USE_EPSV(3)
Home | html | info | man
CURLOPT_FTP_USE_EPSV(3)    Library Functions Manual    CURLOPT_FTP_USE_EPSV(3)


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

       curl_easy_setopt(3) returns a CURLcode indicating success or error.

       CURLE_OK (0) means everything was OK, non-zero means an error occurred,
       see libcurl-errors(3).


SEE ALSO

       CURLOPT_FTPPORT(3), CURLOPT_FTP_USE_EPRT(3)

libcurl                           2025-02-08           CURLOPT_FTP_USE_EPSV(3)

curl 8.12.0 - Generated Sat Feb 15 08:08:44 CST 2025
© manpagez.com 2000-2025
Individual documents may contain additional copyright information.