1---
2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
3SPDX-License-Identifier: curl
4Title: CURLOPT_DOH_SSL_VERIFYSTATUS
5Section: 3
6Source: libcurl
7See-also:
8  - CURLOPT_DOH_SSL_VERIFYHOST (3)
9  - CURLOPT_DOH_SSL_VERIFYPEER (3)
10  - CURLOPT_SSL_VERIFYSTATUS (3)
11Protocol:
12  - TLS
13TLS-backend:
14  - OpenSSL
15  - GnuTLS
16---
17
18# NAME
19
20CURLOPT_DOH_SSL_VERIFYSTATUS - verify the DoH SSL certificate's status
21
22# SYNOPSIS
23
24~~~c
25#include <curl/curl.h>
26
27CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DOH_SSL_VERIFYSTATUS,
28                          long verify);
29~~~
30
31# DESCRIPTION
32
33Pass a long as parameter set to 1 to enable or 0 to disable.
34
35This option determines whether libcurl verifies the status of the DoH
36(DNS-over-HTTPS) server cert using the "Certificate Status Request" TLS
37extension (aka. OCSP stapling).
38
39This option is the DoH equivalent of CURLOPT_SSL_VERIFYSTATUS(3) and
40only affects requests to the DoH server.
41
42If this option is enabled and the server does not support the TLS extension,
43the verification fails.
44
45# DEFAULT
46
470
48
49# EXAMPLE
50
51~~~c
52int main(void)
53{
54  CURL *curl = curl_easy_init();
55  if(curl) {
56    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
57
58    curl_easy_setopt(curl, CURLOPT_DOH_URL,
59                     "https://cloudflare-dns.com/dns-query");
60
61    /* Ask for OCSP stapling when verifying the DoH server */
62    curl_easy_setopt(curl, CURLOPT_DOH_SSL_VERIFYSTATUS, 1L);
63
64    curl_easy_perform(curl);
65  }
66}
67~~~
68
69# AVAILABILITY
70
71Added in 7.76.0.
72
73# RETURN VALUE
74
75Returns CURLE_OK if OCSP stapling is supported by the SSL backend, otherwise
76returns CURLE_NOT_BUILT_IN.
77