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

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

CURLOPT_FTP_SSL_CCC(3), CURLOPT_USE_SSL(3)