CURLOPT_SSL_VERIFYSTATUS(3) Library Functions ManualCURLOPT_SSL_VERIFYSTATUS(3)
NAME
CURLOPT_SSL_VERIFYSTATUS - verify the certificate's status
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_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 server
cert using the "Certificate Status Request" TLS extension (aka. OCSP
stapling).
Note that if this option is enabled but 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.
This option works only with the following TLS backends: GnuTLS and
OpenSSL
EXAMPLE
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
/* ask for OCSP stapling */
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYSTATUS, 1L);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}
AVAILABILITY
Added in curl 7.41.0
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_CAINFO(3), CURLOPT_SSL_VERIFYHOST(3), CURLOPT_SSL_VERIFYPEER(3)
libcurl 2026-07-12 CURLOPT_SSL_VERIFYSTATUS(3)
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