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CURLOPT_FTP_USE_EPRT(3)

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CURLOPT_FTP_USE_EPRT(3)    Library Functions Manual    CURLOPT_FTP_USE_EPRT(3)

NAME
       CURLOPT_FTP_USE_EPRT - use EPRT for FTP

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTP_USE_EPRT, long enabled);

DESCRIPTION
       Pass  a  long. If the value is 1, it tells curl to use the EPRT command
       when doing active FTP  downloads  (which  is  enabled  by  CURLOPT_FTP‐
       PORT(3)).  Using EPRT means that libcurl first attempts to use EPRT be‐
       fore using PORT, but if you pass zero to this option, it  avoids  using
       EPRT, only plain PORT.

       The  EPRT command is a slightly newer addition to the FTP protocol than
       PORT 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 as EPRT is
       necessary then.

DEFAULT
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/file.txt");

           /* contact us back, aka "active" FTP */
           curl_easy_setopt(curl, CURLOPT_FTPPORT, "-");

           /* FTP the way the neanderthals did it */
           curl_easy_setopt(curl, CURLOPT_FTP_USE_EPRT, 0L);

           res = curl_easy_perform(curl);

           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY
       Added in curl 7.10.5

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).


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:

       box; cbp-1 | cbp-1 l | l .  ATTRIBUTE TYPE ATTRIBUTE VALUE = Availabil‐
       ity   web/curl = Stability Uncommitted

SEE ALSO
       CURLOPT_FTPPORT(3), CURLOPT_FTP_USE_EPSV(3)



NOTES
       Source code for open source software components in Oracle  Solaris  can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-
       code-downloads.html.

       This software was built from source available at:
       https://github.com/oracle/solaris-userland

       The original community source was downloaded from:
       https://curl.se/download/curl-8.17.0.tar.bz2

       Further information about this software can be found on the open source
       community website at http://curl.haxx.se/.

libcurl                           2025-12-01           CURLOPT_FTP_USE_EPRT(3)
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