curl / libcurl / API / curl_easy_setopt / CURLOPT_DOH_SSL_VERIFYSTATUS

CURLOPT_DOH_SSL_VERIFYSTATUS explained

NAME

CURLOPT_DOH_SSL_VERIFYSTATUS - verify the DOH SSL certificate's status

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DOH_SSL_VERIFYSTATUS, long verify);

DESCRIPTION

Pass a long as parameter set to 1 to enable or 0 to disable.

This option determines whether libcurl verifies the status of the DOH (DNS-over-HTTPS) server cert using the "Certificate Status Request" TLS extension (aka. OCSP stapling).

This option is the DOH equivalent of CURLOPT_SSL_VERIFYSTATUS and only affects requests to the DOH server.

Note that if this option is enabled but the server does not support the TLS extension, the verification will fail.

DEFAULT

0

PROTOCOLS

DOH

EXAMPLE

CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
 
  curl_easy_setopt(curl, CURLOPT_DOH_URL, "https://cloudflare-dns.com/dns-query");
 
  /* Ask for OCSP stapling when verifying the DOH server */
  curl_easy_setopt(curl, CURLOPT_DOH_SSL_VERIFYSTATUS, 1L);
 
  curl_easy_perform(curl);
}

AVAILABILITY

Added in 7.76.0. This option is currently only supported by the OpenSSL, GnuTLS and NSS TLS backends.

RETURN VALUE

Returns CURLE_OK if OCSP stapling is supported by the SSL backend, otherwise returns CURLE_NOT_BUILT_IN.

SEE ALSO

CURLOPT_DOH_SSL_VERIFYHOST(3), CURLOPT_DOH_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYSTATUS(3),

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