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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 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 2026-06-11 CURLOPT_KRBLEVEL(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | HISTORY | DEPRECATED | AVAILABILITY | RETURN VALUE | SEE ALSO
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