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 zero 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_SSLVERSION(3), CURLOPT_USE_SSL(3), CURLOPT_SSLVERSION(3),