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_FTPPORT(3)). Using EPRT means that libcurl first attempts to
use EPRT before 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
Returns CURLE_OK
SEE ALSO
CURLOPT_FTPPORT(3), CURLOPT_FTP_USE_EPSV(3)
libcurl 2024-08-05 CURLOPT_FTP_USE_EPRT(3)
curl 8.9.1 - Generated Mon Aug 12 13:59:53 CDT 2024