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CURLOPT_PROXY_CRLFILE(3)   curl_easy_setopt options   CURLOPT_PROXY_CRLFILE(3)

NAME
       CURLOPT_PROXY_CRLFILE  -	 specify  a  proxy Certificate Revocation List
       file

SYNOPSIS
       #include	<curl/curl.h>

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

DESCRIPTION
       This option is for connecting to	an HTTPS proxy,	not an HTTPS server.

       Pass  a	char * to a null-terminated string naming a file with the con-
       catenation 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 CUR-
       LOPT_PROXY_SSL_VERIFYPEER(3) option.

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

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

DEFAULT
       NULL

PROTOCOLS
       Used with HTTPS proxy.

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl)	{
	 curl_easy_setopt(curl,	CURLOPT_URL, "https://example.com/");
	 curl_easy_setopt(curl,	CURLOPT_PROXY, "https://localhost:80");
	 curl_easy_setopt(curl,	CURLOPT_PROXY_CRLFILE, "/etc/certs/crl.pem");
	 ret = curl_easy_perform(curl);
	 curl_easy_cleanup(curl);
       }

AVAILABILITY
       Added in	7.52.0

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_PROXY_SSL_VERIFYPEER(3),	CURLOPT_PROXY_SSL_VERIFYHOST(3),  CUR-
       LOPT_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYHOST(3),

libcurl	7.72.0			 June 25, 2020	      CURLOPT_PROXY_CRLFILE(3)

NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO

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