CURLOPT_DOH_SSL_VERIFYSTATUS - Man Page

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(3) 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),

Referenced By

curl_easy_setopt(3).

July 16, 2021 libcurl 7.79.0 curl_easy_setopt options