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44 lines
1.3 KiB
Groff
44 lines
1.3 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_SSL_EC_CURVES.md
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.TH CURLOPT_SSL_EC_CURVES 3 "2024-06-01" libcurl
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.SH NAME
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CURLOPT_SSL_EC_CURVES \- key exchange curves
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_EC_CURVES, char *alg_list);
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.fi
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.SH DESCRIPTION
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Pass a string as parameter with a colon delimited list of (EC) algorithms. This
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option defines the client\(aqs key exchange algorithms in the SSL handshake (if
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the SSL backend libcurl is built to use supports it).
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.SH DEFAULT
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\&"", embedded in SSL backend
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.SH PROTOCOLS
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All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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This option works only with the following TLS backends:
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OpenSSL and wolfSSL
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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curl_easy_setopt(curl, CURLOPT_SSL_EC_CURVES, "X25519:P-521");
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res = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.73.0. Supported by the OpenSSL backend.
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH SEE ALSO
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.BR CURLOPT_SSL_CIPHER_LIST (3),
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.BR CURLOPT_SSL_OPTIONS (3),
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.BR CURLOPT_TLS13_CIPHERS (3)
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