NAME

       CURLOPT_FTPSSLAUTH - order in which to attempt TLS vs SSL

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTPSSLAUTH, long order);

DESCRIPTION

       Pass a long using one of the values from below, to alter how libcurl issues "AUTH TLS" or "AUTH SSL" when
       FTP over SSL is activated. This is only interesting if CURLOPT_USE_SSL(3) is also set.

       Possible order values:

       CURLFTPAUTH_DEFAULT
              Allow libcurl to decide.

       CURLFTPAUTH_SSL
              Try "AUTH SSL" first, and only if that fails try "AUTH TLS".

       CURLFTPAUTH_TLS
              Try "AUTH TLS" first, and only if that fails try "AUTH SSL".

DEFAULT

       CURLFTPAUTH_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");
           curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_TRY);
           /* funny server, ask for SSL before TLS */
           curl_easy_setopt(curl, CURLOPT_FTPSSLAUTH, (long)CURLFTPAUTH_SSL);
           res = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in curl 7.12.2

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_FTP_SSL_CCC(3), CURLOPT_USE_SSL(3)

libcurl                                            2025-03-05                              CURLOPT_FTPSSLAUTH(3)