NAME

       CURLINFO_TLS_SESSION - get TLS session info

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_TLS_SESSION,
                                  struct curl_tlssessioninfo **session);

DESCRIPTION

       This  option has been superseded by CURLINFO_TLS_SSL_PTR(3) which was added in 7.48.0. The
       only reason you would use this option instead is if  you  could  be  using  a  version  of
       libcurl earlier than 7.48.0.

       This  option is exactly the same as CURLINFO_TLS_SSL_PTR(3) except in the case of OpenSSL.
       If the session backend is CURLSSLBACKEND_OPENSSL  the  session  internals  pointer  varies
       depending on the option:

       CURLINFO_TLS_SESSION OpenSSL session internals is SSL_CTX *.

       CURLINFO_TLS_SSL_PTR OpenSSL session internals is SSL *.

       You   can   obtain  an  SSL_CTX  pointer  from  an  SSL  pointer  using  OpenSSL  function
       SSL_get_SSL_CTX. Therefore unless you need compatibility with older  versions  of  libcurl
       use CURLINFO_TLS_SSL_PTR(3). Refer to that document for more information.

PROTOCOLS

       All TLS-based

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
         CURLcode res;
         struct curl_tlssessioninfo *tls;
         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
         res = curl_easy_perform(curl);
         curl_easy_getinfo(curl, CURLINFO_TLS_SESSION, &tls);
         curl_easy_cleanup(curl);
       }

AVAILABILITY

       Added  in  7.34.0,  and  supported OpenSSL, GnuTLS, NSS and gskit only up until 7.48.0 was
       released.

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       curl_easy_getinfo(3), curl_easy_setopt(3), CURLINFO_TLS_SSL_PTR(3),