GNURLOPT_TLS13_CIPHERS(3)

✨ NAME ✨

okay so bestie, you're on the GNURLOPT_TLS13_CIPHERS(3) page from the curl_easy_setopt options fam 💅 and the main character here is CURLOPT_TLS13_CIPHERS — it specifies cipher suites to use for TLS 1.3. yes, literally that 🎀

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🌸 SYNOPSIS 🌸

#include <gnurl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TLS13_CIPHERS, char
*list);

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💖 DESCRIPTION 💖

Pass a char * pointing to a null-terminated string holding the list of cipher suites to use for the TLS 1.3 connection ✨ The list has to be syntactically correct — like, actually — and it consists of one or more cipher suite strings separated by colons. no cap, the colons are doing the work 🫶

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

https://curl.haxx.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're using a different SSL backend, you can try setting TLS 1.3 cipher suites by using the CURLOPT_SSL_CIPHER_LIST option. iykyk 💅

The application does not have to keep the string around after setting this option — so you can let it go, bestie 💖

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🎀 DEFAULT 🎀

• NULL — use internal default 🌸

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🦋 PROTOCOLS 🦋

All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc. the whole TLS-based squad 👑

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🍓 EXAMPLE 🍓

CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
  curl_easy_setopt(curl, CURLOPT_TLS13_CIPHERS,
                   "TLS13-CHACHA20-POLY1305-SHA256");
  ret = curl_easy_perform(curl);
  curl_easy_cleanup(curl);
}

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⭐ AVAILABILITY ⭐

Added in 7.61.0. Available when built with OpenSSL >= 1.1.1. iconic behavior, honestly 🌈

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👑 RETURN VALUE 👑

Returns CURLE_OK if supported, CURLE_NOT_BUILT_IN otherwise. that's the whole vibe check 💀

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💜 SEE ALSO 💜

• CURLOPT_SSL_CIPHER_LIST(3)
• CURLOPT_SSLVERSION(3)
• CURLOPT_PROXY_SSL_CIPHER_LIST(3)
• CURLOPT_PROXY_TLS13_CIPHERS(3)
• CURLOPT_PROXY_SSLVERSION(3)
• CURLOPT_USE_SSL(3),

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mwah 💋 this iconic little page comes from libcurl 7.61.0, dated 25 May 2018, and it's the GNURLOPT_TLS13_CIPHERS(3) manual. bye bestie, go encrypt something cute 🌈🫶