curl/docs/libcurl/opts/CURLOPT_PROXY_TLS13_CIPHERS.md

c	SPDX-License-Identifier	Title	Section	Source	See-also	Protocol	TLS-backend	Added-in
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.	curl	CURLOPT_PROXY_TLS13_CIPHERS	3	libcurl	CURLOPT_PROXY_SSLVERSION (3) CURLOPT_PROXY_SSL_CIPHER_LIST (3) CURLOPT_SSLVERSION (3) CURLOPT_SSL_CIPHER_LIST (3) CURLOPT_TLS13_CIPHERS (3)	TLS	OpenSSL Schannel wolfSSL mbedTLS	7.61.0

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 pointer, 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.

Find more details about cipher lists on this URL:

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

This option is used when curl is built to use OpenSSL 1.1.1 or later, Schannel, wolfSSL, or mbedTLS 3.6.0 or later.

Before curl 8.10.0 with mbedTLS or wolfSSL, TLS 1.3 cipher suites where set by using the CURLOPT_PROXY_SSL_CIPHER_LIST(3) option.

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

DEFAULT

NULL, use internal built-in list

%PROTOCOLS%

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_TLS13_CIPHERS,
                     "TLS_CHACHA20_POLY1305_SHA256");
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

HISTORY

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

Added in 7.85.0 for Schannel.

Added in 8.10.0 for wolfSSL.

Added in 8.10.0 for mbedTLS. Available when built with mbedTLS >= 3.6.0.

%AVAILABILITY%

RETURN VALUE

Returns CURLE_OK if supported, CURLE_NOT_BUILT_IN otherwise.