CURLOPT_PROXY_TLS13_CIPHERS - Online Linux Manual PageSection : 3
Updated : November 26, 2021
Source : libcurl 7.82.0
Note : curl_easy_setopt options

NAMECURLOPT_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);

DESCRIPTIONPass 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 will 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.

DEFAULTNULL, use internal default

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

EXAMPLECURL *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); }

AVAILABILITYAdded in 7.61.0. Available when built with OpenSSL >= 1.1.1.

RETURN VALUEReturns CURLE_OK if supported, CURLE_NOT_BUILT_IN otherwise.

SEE ALSOCURLOPT_PROXY_SSL_CIPHER_LIST(3), CURLOPT_PROXY_SSLVERSION (3)," CURLOPT_SSL_CIPHER_LIST(3), CURLOPT_TLS13_CIPHERS (3)," CURLOPT_SSLVERSION(3),"
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