CURLOPT_PROXY_SSL_CIPHER_LIST(3)                      curl_easy_setopt options

NAME
       CURLOPT_PROXY_SSL_CIPHER_LIST - specify ciphers to use for proxy TLS

SYNOPSIS
       #include <curl/curl.h>

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

DESCRIPTION
       Pass a char *, pointing to a null-terminated string holding the list of
       ciphers to use for the connection to the HTTPS proxy. The list must be
       syntactically correct, it consists of one or more cipher strings
       separated by colons. Commas or spaces are also acceptable separators
       but colons are normally used, !, - and + can be used as operators.

       For OpenSSL and GnuTLS valid examples of cipher lists include
       'RC4-SHA', 'SHA1+DES', 'TLSv1' and 'DEFAULT'. The default list is
       normally set when you compile OpenSSL.

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

        https://www.openssl.org/docs/apps/ciphers.html

       For NSS, valid examples of cipher lists include 'rsa_rc4_128_md5',
       'rsa_aes_128_sha', etc. With NSS you don't add/remove ciphers. If one
       uses this option then all known ciphers are disabled and only those
       passed in are enabled.

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

        http://git.fedorahosted.org/cgit/mod_nss.git/plain/docs/mod_nss.html#Directives

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

DEFAULT
       NULL, use internal default

PROTOCOLS
       All

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
         curl_easy_setopt(curl, CURLOPT_PROXY, "https://localhost");
         curl_easy_setopt(curl, CURLOPT_PROXY_SSL_CIPHER_LIST, "TLSv1");
         ret = curl_easy_perform(curl);
         curl_easy_cleanup(curl);
       }

AVAILABILITY
       Added in 7.52.0

       If built TLS enabled.

RETURN VALUE
       Returns CURLE_OK if TLS is supported, CURLE_UNKNOWN_OPTION if not, or
       CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSO
       CURLOPT_PROXY_TLS13_CIPHERS(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_SSL_CIPHER_LIST(3)