CURLINFO_PROXY_SSL_VERIFYRESULT(3) Introduction to Library Functions
CURLINFO_PROXY_SSL_VERIFYRESULT - result of 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.
0 is a positive result. Non-zero is an error.
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
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode result;
long verifyresult;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
curl_easy_setopt(curl, CURLOPT_PROXY, "https://proxy.example:443");
result = curl_easy_perform(curl);
if(result) {
printf("error: %s\n", curl_easy_strerror(result));
curl_easy_cleanup(curl);
return 1;
}
result = curl_easy_getinfo(curl, CURLINFO_PROXY_SSL_VERIFYRESULT,
&verifyresult);
if(!result) {
printf("The peer verification said %s\n",
(verifyresult ? "bad" : "fine"));
}
curl_easy_cleanup(curl);
}
}
Added in curl 7.52.0
curl_easy_getinfo(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).
CURLINFO_SSL_VERIFYRESULT(3), curl_easy_getinfo(3),
curl_easy_setopt(3)
libcurl 2026-01-08
CURLINFO_PROXY_SSL_VERIFYRESULT(3)
NAME
CURLINFO_PROXY_SSL_VERIFYRESULT - result of proxy certificate
verification
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PROXY_SSL_VERIFYRESULT,
long *result);
DESCRIPTION
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.
0 is a positive result. Non-zero is an error.
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 result;
long verifyresult;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
curl_easy_setopt(curl, CURLOPT_PROXY, "https://proxy.example:443");
result = curl_easy_perform(curl);
if(result) {
printf("error: %s\n", curl_easy_strerror(result));
curl_easy_cleanup(curl);
return 1;
}
result = curl_easy_getinfo(curl, CURLINFO_PROXY_SSL_VERIFYRESULT,
&verifyresult);
if(!result) {
printf("The peer verification said %s\n",
(verifyresult ? "bad" : "fine"));
}
curl_easy_cleanup(curl);
}
}
AVAILABILITY
Added in curl 7.52.0
RETURN VALUE
curl_easy_getinfo(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
CURLINFO_SSL_VERIFYRESULT(3), curl_easy_getinfo(3),
curl_easy_setopt(3)
libcurl 2026-01-08
CURLINFO_PROXY_SSL_VERIFYRESULT(3)