CURLOPT_PROXY_TLS13_CIPHERS(3)                        curl_easy_setopt options

NAME
       CURLOPT_PROXY_TLS13_CIPHERS - ciphers suites for proxy TLS 1.3

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_TLS13_CIPHERS,
       char *list);

DESCRIPTION
       Pass a char *, pointing to a null-terminated string holding the list of
       cipher suites to use for the TLS 1.3 connection to a proxy. The list
       must be syntactically correct, it consists of one or more cipher suite
       strings separated by colons.

       You'll find more details about cipher lists on this URL:

        https://curl.se/docs/ssl-ciphers.html

       This option is currently used only when curl is built to use OpenSSL
       1.1.1 or later. If you are using a different SSL backend you can try
       setting TLS 1.3 cipher suites by using the
       CURLOPT_PROXY_SSL_CIPHER_LIST option.

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

DEFAULT
       NULL, use internal default

PROTOCOLS
       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
         curl_easy_setopt(curl, CURLOPT_PROXY_TLS13_CIPHERS,
                          "TLS13-CHACHA20-POLY1305-SHA256");
         ret = curl_easy_perform(curl);
         curl_easy_cleanup(curl);
       }

AVAILABILITY
       Added in 7.61.0.  Available when built with OpenSSL >= 1.1.1.

RETURN VALUE
       Returns CURLE_OK if supported, CURLE_NOT_BUILT_IN otherwise.

SEE ALSO
       CURLOPT_PROXY_SSL_CIPHER_LIST(3), CURLOPT_PROXY_SSLVERSION(3),
       CURLOPT_SSL_CIPHER_LIST(3), CURLOPT_TLS13_CIPHERS(3),
       CURLOPT_SSLVERSION(3),

libcurl 7.77.0                 November 4, 2020 CURLOPT_PROXY_TLS13_CIPHERS(3)