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CURLINFO_PROXY_SSL_VERIFYRESULT - get the result of the proxy certificate verification #include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PROXY_SSL_VERIFYRESULT, long *result); Pass a pointer to a long to receive the result of the certificate verification that was requested (using the CURLOPT_PROXY_SSL_VERIFYPEER(3) option. This is only used for HTTPS proxies. All

CURL *curl = curl_easy_init();
if(curl) {
 CURLcode res;
 long verifyresult;
 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
 curl_easy_setopt(curl, CURLOPT_PROXY, "https://proxy:443");
 res = curl_easy_perform(curl);
 curl_easy_getinfo(curl, CURLINFO_PROXY_SSL_VERIFYRESULT, &verifyresult);
 printf("The peer verification said %s\\n", verifyresult?
 "fine":"BAAAD");
 curl_easy_cleanup(curl);
}

Added in 7.52.0 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. curl_easy_getinfo "(3), " curl_easy_setopt "(3), " CURLINFO_SSL_VERIFYRESULT "(3), "