CURLOPT_PROXY_CAPATH(3)

NAME
CURLOPT_PROXY_CAPATH - specify directory holding proxy CA certificates

SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_CAPATH, char *capath);

DESCRIPTION
Pass a char * to a zero terminated string naming a directory holding multiple CA certificates to verify the HTTPS proxy with. If libcurl is built against OpenSSL, the certificate directory must be prepared using the openssl c_rehash utility. This makes sense only when CURLOPT_PROXY_SSL_VERIFYPEER(3) is enabled (which it is by default).

The application does not have to keep the string around after setting this option.

DEFAULT
NULL

PROTOCOLS
Everything used over an HTTPS proxy

EXAMPLE
CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
  /* using a HTTPS proxy */
  curl_easy_setopt(curl, CURLOPT_PROXY, "https://localhost:443");
  curl_easy_setopt(curl, CURLOPT_PROXY_CAPATH, "/etc/cert-dir");
  ret = curl_easy_perform(curl);
  curl_easy_cleanup(curl);
}

AVAILABILITY
Added in 7.52.0

This option is supported by the OpenSSL, GnuTLS, PolarSSL and mbedTLS (since 7.56.0) backends. The NSS backend provides the option only for backward compatibility.

RETURN VALUE
CURLE_OK if supported; or an error such as:

CURLE_NOT_BUILT_IN - Not supported by the SSL backend

CURLE_UNKNOWN_OPTION

CURLE_OUT_OF_MEMORY

SEE ALSO
CURLOPT_PROXY_CAINFO(3), CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3),