CURLOPT_KRBLEVEL(3)

okay so bestie, this is the CURLOPT_KRBLEVEL(3) page from the Library Functions Manual — and it's a whole little deprecated era, ngl 💅

🎀 NAME 🎀

CURLOPT_KRBLEVEL — FTP kerberos security level

✨ SYNOPSIS ✨

#include <curl/curl.h>

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

🦋 DESCRIPTION 🦋

Deprecated, bestie. 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. (yes, it's literally in the page twice, I'm just keeping the facts intact 🫶)

🌸 DEFAULT 🌸

• NULL — that's the default, periodt.

🧚 PROTOCOLS 🧚

This functionality affects ftp only. That's the whole invite list 💌

🔥 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. She's gone, bestie 💀

This option was known as CURLOPT_KRB4LEVEL up to 7.16.3.

💀 DEPRECATED 💀

Deprecated since 8.17.0. It's giving "archived, don't text her" energy 🙈

🌈 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)

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xoxo 💋 this was libcurl, dated 2026-10-12, page CURLOPT_KRBLEVEL(3) — mwah, bestie 🫶