CURLOPT_PROXY_CAPATH(3)    curl_easy_setopt options    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 null-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
       _PROXY_SSL_VERIFYPEER&section=3">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 an 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, 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_CAINFO(3),
       CURLOPT_PROXY_SSL_VERIFYHOST(3),  CURLOPT_STDERR(3),
       CURLOPT_DEBUGFUNCTION(3),

libcurl 7.77.0                 November 4, 2020        CURLOPT_PROXY_CAPATH(3)