mirror of
https://github.com/moparisthebest/curl
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032e838b73
Updated terminology in docs, comments and phrases to refer to C strings as "null-terminated". Done to unify with how most other C oriented docs refer of them and what users in general seem to prefer (based on a single highly unscientific poll on twitter). Reported-by: coinhubs on github Fixes #5598 Closes #5608
78 lines
3.1 KiB
Groff
78 lines
3.1 KiB
Groff
.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at https://curl.haxx.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_SSL_CIPHER_LIST 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_SSL_CIPHER_LIST \- specify ciphers to use for TLS
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.SH SYNOPSIS
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_CIPHER_LIST, char *list);
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.SH DESCRIPTION
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Pass a char *, pointing to a null-terminated string holding the list of
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ciphers to use for the SSL connection. The list must be syntactically correct,
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it consists of one or more cipher strings separated by colons. Commas or
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spaces are also acceptable separators but colons are normally used, \&!, \&-
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and \&+ can be used as operators.
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For OpenSSL and GnuTLS valid examples of cipher lists include 'RC4-SHA',
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\'SHA1+DES\', 'TLSv1' and 'DEFAULT'. The default list is normally set when you
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compile OpenSSL.
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You'll find more details about cipher lists on this URL:
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https://curl.haxx.se/docs/ssl-ciphers.html
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For NSS, valid examples of cipher lists include 'rsa_rc4_128_md5',
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\'rsa_aes_128_sha\', etc. With NSS you don't add/remove ciphers. If one uses
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this option then all known ciphers are disabled and only those passed in are
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enabled.
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For WolfSSL, valid examples of cipher lists include
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\'ECDHE-RSA-RC4-SHA\', 'AES256-SHA:AES256-SHA256', etc.
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The application does not have to keep the string around after setting this
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option.
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.SH DEFAULT
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NULL, use internal default
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.SH PROTOCOLS
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All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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.SH EXAMPLE
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.nf
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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curl_easy_setopt(curl, CURLOPT_SSL_CIPHER_LIST, "TLSv1");
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ret = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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.fi
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.SH AVAILABILITY
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If built TLS enabled.
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.SH RETURN VALUE
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Returns CURLE_OK if TLS is supported, CURLE_UNKNOWN_OPTION if not, or
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CURLE_OUT_OF_MEMORY if there was insufficient heap space.
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.SH "SEE ALSO"
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.BR CURLOPT_TLS13_CIPHERS "(3), " CURLOPT_SSLVERSION "(3), "
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.BR CURLOPT_PROXY_SSL_CIPHER_LIST "(3), " CURLOPT_PROXY_TLS13_CIPHERS "(3), "
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.BR CURLOPT_USE_SSL "(3), "
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