CURLOPT_CAINFO(3)					     curl_easy_setopt options						 CURLOPT_CAINFO(3)

NAME

       CURLOPT_CAINFO - path to Certificate Authority (CA) bundle

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CAINFO, char *path);

DESCRIPTION

       Pass a char * to a zero terminated string naming a file holding one or more certificates to verify the peer with.

       If CURLOPT_SSL_VERIFYPEER(3) is zero and you avoid verifying the server's certificate, CURLOPT_CAINFO(3) need not even indicate an accessi-
       ble file.

       This option is by default set to the system path where libcurl's cacert bundle is assumed to be stored, as established at build time.

       If curl is built against the NSS SSL library, the NSS PEM PKCS#11 module (libnsspem.so) needs to be available for this option to work prop-
       erly.

       (iOS  and  macOS  only)	If curl is built against Secure Transport, then this option is supported for backward compatibility with other SSL
       engines, but it should not be set. If the option is not set, then curl will use the certificates in the system and user Keychain to  verify
       the peer, which is the preferred method of verifying the peer's certificate chain.

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

DEFAULT

       Built-in system specific

PROTOCOLS

       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

EXAMPLE

       TODO

AVAILABILITY

       For  SSL  engines  that	don't  support certificate files the CURLOPT_CAINFO option is ignored. Refer to https://curl.haxx.se/docs/ssl-com-
       pared.html

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_CAPATH(3), CURLOPT_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYHOST(3),

libcurl 7.54.0							 December 21, 2016						 CURLOPT_CAINFO(3)