CURLOPT_SSLENGINE_DEFAULT(3) Library Functions Manual NAME CURLOPT_SSLENGINE_DEFAULT - make SSL engine default SYNOPSIS #include CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLENGINE_DEFAULT, long val); DESCRIPTION Pass a long set to 1 to make the already specified crypto engine the default for (asymmetric) crypto operations. This option has no effect unless set after CURLOPT_SSLENGINE(3). DEFAULT None PROTOCOLS All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc. This option works only with the following TLS backends: OpenSSL EXAMPLE 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"); curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT, 1L); res = curl_easy_perform(curl); curl_easy_cleanup(curl); } } AVAILABILITY Only if the SSL backend is OpenSSL built with engine support. RETURN VALUE CURLE_OK - Engine set as default. CURLE_SSL_ENGINE_SETFAILED - Engine could not be set as default. 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. SEE ALSO CURLOPT_SSLCERT(3), CURLOPT_SSLENGINE(3) libcurl April 26 2024 CURLOPT_SSLENGINE_DEFAULT(3)