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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). SEE ALSO CURLOPT_FTPPORT(3), CURLOPT_FTP_USE_EPSV(3) libcurl 2025-06-03 CURLOPT_FTP_USE_EPRT(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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