CURLOPT_SSL_VERIFYSTATUS - verify the certificate's status

Added in curl 7.41.0

0

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.

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); } }

CURLOPT_SSL_VERIFYSTATUS - verify the certificate's status

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

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).

CURLOPT_CAINFO(3), CURLOPT_SSL_VERIFYHOST(3), CURLOPT_SSL_VERIFYPEER(3) libcurl 2025-06-16 CURLOPT_SSL_VERIFYSTATUS(3)

#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_VERIFYSTATUS, long verify);