NAME

       CURLOPT_PROXY_SSLCERT - HTTPS proxy client certificate

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_SSLCERT, char *cert);

DESCRIPTION

       This option is for connecting to an HTTPS proxy, not an HTTPS server.

       Pass a pointer to a null-terminated string as parameter. The string should be the filename of your client
       certificate used to connect to the HTTPS proxy.  The default format is  "P12"  on  Secure  Transport  and
       "PEM" on other engines, and can be changed with CURLOPT_PROXY_SSLCERTTYPE(3).

       With  Secure Transport, this can also be the nickname of the certificate you wish to authenticate with as
       it is named in the security database. If you want to use  a  file  from  the  current  directory,  please
       precede it with "./" prefix, in order to avoid confusion with a nickname.

       When   using   a  client  certificate,  you  most  likely  also  need  to  provide  a  private  key  with
       CURLOPT_PROXY_SSLKEY(3).

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

DEFAULT

       NULL

PROTOCOLS

       This functionality affects all TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

       This option works only with the following TLS backends:  GnuTLS,  OpenSSL,  Schannel,  Secure  Transport,
       mbedTLS and wolfSSL

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
           curl_easy_setopt(curl, CURLOPT_PROXY, "https://proxy");
           curl_easy_setopt(curl, CURLOPT_PROXY_SSLCERT, "client.pem");
           curl_easy_setopt(curl, CURLOPT_PROXY_SSLKEY, "key.pem");
           curl_easy_setopt(curl, CURLOPT_PROXY_KEYPASSWD, "s3cret");
           res = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in curl 7.52.0

RETURN VALUE

       Returns  CURLE_OK  if  TLS  enabled,  CURLE_UNKNOWN_OPTION  if  not,  or CURLE_OUT_OF_MEMORY if there was
       insufficient heap space.

SEE ALSO

       CURLOPT_PROXY_SSLCERTTYPE(3), CURLOPT_PROXY_SSLKEY(3), CURLOPT_SSLCERT(3)