docs/libcurl/opts/CURLOPT_DOH_SSL_VERIFYSTATUS.3

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.TH CURLOPT_DOH_SSL_VERIFYSTATUS 3 "July 16, 2021" "libcurl 7.78.0" "curl_easy_setopt options"

.SH NAME
CURLOPT_DOH_SSL_VERIFYSTATUS \- verify the DoH SSL certificate's status
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DOH_SSL_VERIFYSTATUS, long verify);
.SH 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 \fICURLOPT_SSL_VERIFYSTATUS(3)\fP 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.
.SH DEFAULT
0
.SH PROTOCOLS
DoH
.SH EXAMPLE
.nf
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);
}
.fi
.SH AVAILABILITY
Added in 7.76.0. This option is currently only supported by the OpenSSL, GnuTLS
and NSS TLS backends.
.SH RETURN VALUE
Returns CURLE_OK if OCSP stapling is supported by the SSL backend, otherwise
returns CURLE_NOT_BUILT_IN.
.SH "SEE ALSO"
.BR CURLOPT_DOH_SSL_VERIFYHOST "(3), "
.BR CURLOPT_DOH_SSL_VERIFYPEER "(3), "
.BR CURLOPT_SSL_VERIFYSTATUS "(3), "