CURLOPT_DOH_SSL_VERIFYSTATUS(3)                       Library Functions Manual

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(3) and
       only affects requests to the DoH server.

       If this option is enabled and the server does not support the TLS
       extension, the verification fails.

DEFAULT
       0

PROTOCOLS
       This functionality affects  all TLS based protocols: HTTPS, FTPS,
       IMAPS, POP3S, SMTPS etc. only

       This option works only with the following TLS backends: GnuTLS and
       OpenSSL

EXAMPLE
       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode result;
           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);

           result = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY
       Added in curl 7.76.0

RETURN VALUE
       curl_easy_setopt(3) returns a CURLcode indicating success or error.

       CURLE_OK (0) means everything was OK, non-zero means an error occurred,
       see libcurl-errors(3).

SEE ALSO
       CURLOPT_DOH_SSL_VERIFYHOST(3), CURLOPT_DOH_SSL_VERIFYPEER(3),
       CURLOPT_SSL_VERIFYSTATUS(3)

libcurl                           2026-09-02   CURLOPT_DOH_SSL_VERIFYSTATUS(3)