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CURLOPT_PROXY_SSLCERT(3) curl_easy_setopt options CURLOPT_PROXY_SSLCERT(3)
CURLOPT_PROXY_SSLCERT - set SSL proxy client certificate
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_SSLCERT, char
This option is for connecting to an HTTPS proxy, not an HTTPS server.
Pass a pointer to a zero terminated string as parameter. The string
should be the file name 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
With NSS or 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
Used with HTTPS proxy
CURL *curl = curl_easy_init();
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");
ret = curl_easy_perform(curl);
Added in 7.52.0
Returns CURLE_OK if TLS enabled, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.
libcurl 7.68.0 April 17, 2018 CURLOPT_PROXY_SSLCERT(3)