CURLOPT_CRLFILE(3)					     curl_easy_setopt options						CURLOPT_CRLFILE(3)

NAME

       CURLOPT_CRLFILE - specify a Certificate Revocation List file

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CRLFILE, char *file);

DESCRIPTION

       Pass  a char * to a zero terminated string naming a file with the concatenation of CRL (in PEM format) to use in the certificate validation
       that occurs during the SSL exchange.

       When curl is built to use NSS or GnuTLS, there is no way to influence the use of CRL passed to  help  in  the  verification  process.  When
       libcurl	is  built  with OpenSSL support, X509_V_FLAG_CRL_CHECK and X509_V_FLAG_CRL_CHECK_ALL are both set, requiring CRL check against all
       the elements of the certificate chain if a CRL file is passed.

       This option makes sense only when used in combination with the CURLOPT_SSL_VERIFYPEER(3) option.

       A specific error code (CURLE_SSL_CRL_BADFILE) is defined with the option. It is returned when the SSL exchange fails because the  CRL  file
       cannot  be  loaded.   A failure in certificate verification due to a revocation information found in the CRL does not trigger this specific
       error.

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

DEFAULT

       NULL

PROTOCOLS

       All TLS-based protocols

EXAMPLE

       TODO

AVAILABILITY

       Added in 7.19.0

RETURN VALUE

       Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSO

       CURLOPT_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYHOST(3),

libcurl 7.54.0							 December 21, 2016						CURLOPT_CRLFILE(3)