CURLOPT_FTPSSLAUTH(3)

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, CURLFTPAUTH_SSL);
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

HISTORY
CURLFTPAUTH_* enums became long types in 8.16.0, prior to this version a long cast was necessary when passed to curl_easy_setopt(3).

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)