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- .\" generated by cd2nroff 0.1 from CURLOPT_SSLENGINE.md
- .TH CURLOPT_SSLENGINE 3 "2025-01-17" libcurl
- .SH NAME
- CURLOPT_SSLENGINE \- SSL engine identifier
- .SH SYNOPSIS
- .nf
- #include <curl/curl.h>
- CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLENGINE, char *id);
- .fi
- .SH DESCRIPTION
- Pass a pointer to a null\-terminated string as parameter. It is used as the
- identifier for the crypto engine you want to use for your private key.
- The application does not have to keep the string around after setting this
- option.
- .SH DEFAULT
- NULL
- .SH PROTOCOLS
- This functionality affects all TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
- This option works only with the following TLS backends:
- OpenSSL
- .SH EXAMPLE
- .nf
- 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_SSLENGINE, "dynamic");
- res = curl_easy_perform(curl);
- curl_easy_cleanup(curl);
- }
- }
- .fi
- .SH AVAILABILITY
- Added in curl 7.9.3
- .SH RETURN VALUE
- CURLE_OK \- Engine found.
- CURLE_SSL_ENGINE_NOTFOUND \- Engine not found, or OpenSSL was not built with
- engine support.
- CURLE_SSL_ENGINE_INITFAILED \- Engine found but initialization failed.
- CURLE_NOT_BUILT_IN \- Option not built in, OpenSSL is not the SSL backend.
- CURLE_UNKNOWN_OPTION \- Option not recognized.
- CURLE_OUT_OF_MEMORY \- Insufficient heap space.
- .SH SEE ALSO
- .BR CURLINFO_SSL_ENGINES (3),
- .BR CURLOPT_SSLENGINE_DEFAULT (3),
- .BR CURLOPT_SSLKEY (3)
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