Manpages - CURLINFO_SSL_VERIFYRESULT.3

CURLINFO_SSL_VERIFYRESULT - get the result of the certificate verification

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_SSL_VERIFYRESULT, long *result);

Pass a pointer to a long to receive the result of the server SSL certificate verification that was requested (using the CURLOPT_SSL_VERIFYPEER(3) option).

0 is a positive result. Non-zero is an error.

All using TLS

  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    long verifyresult;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
    res = curl_easy_perform(curl);
    curl_easy_getinfo(curl, CURLINFO_SSL_VERIFYRESULT, &verifyresult);
    printf("The peer verification said %s\n", verifyresult?
           "BAAAD":"fine");
    curl_easy_cleanup(curl);
  }

Added in 7.5. Only set by the OpenSSL/libressl/boringssl, NSS and GnuTLS backends.

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

*curl_easy_getinfo*(3), *curl_easy_setopt*(3),