CURLOPT_KRBLEVEL(3) Library Functions Manual 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
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 &'pri-
vate'. 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 res;
curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/foo.bin");
curl_easy_setopt(curl, CURLOPT_KRBLEVEL, "private");
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}
HISTORY
This option was known as CURLOPT_KRB4LEVEL up to 7.16.3
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_KRBLEVEL(3), CURLOPT_USE_SSL(3)
libcurl 2026-07-12 CURLOPT_KRBLEVEL(3)
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