CURLOPT_KRBLEVEL(3) Introduction to Library Functions CURLOPT_KRBLEVEL(3)

NAME


CURLOPT_KRBLEVEL - FTP kerberos security level

SYNOPSIS


#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_KRBLEVEL, char *level);

DESCRIPTION


Deprecated. It serves no purpose anymore.

Pass a char pointer as parameter. Set the kerberos security level for
FTP; this also enables kerberos awareness. This is a string that
should match one of the following: clear, safe, confidential or
private. If the string is set but does not match one of these,
private is used. Set the string to NULL to disable kerberos support
for FTP.

The application does not have to keep the string around after setting
this option.

The application does not have to keep the string around after setting
this option.

DEFAULT


NULL

PROTOCOLS


This functionality affects ftp only

EXAMPLE


int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode result;
curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/foo.bin");
curl_easy_setopt(curl, CURLOPT_KRBLEVEL, "private");
result = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}

HISTORY


Functionality removed in 8.17.0

This option was known as CURLOPT_KRB4LEVEL up to 7.16.3

DEPRECATED


Deprecated since 8.17.0

AVAILABILITY


Added in curl 7.16.4

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_USE_SSL(3)

libcurl 2026-01-08 CURLOPT_KRBLEVEL(3)