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---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Title: CURLINFO_TLS_SESSION
Section: 3
Source: libcurl
See-also:
- CURLINFO_TLS_SSL_PTR (3)
- curl_easy_getinfo (3)
- curl_easy_setopt (3)
Protocol:
- TLS
TLS-backend:
- OpenSSL
- GnuTLS
Added-in: 7.34.0
---
# NAME
CURLINFO_TLS_SESSION - TLS session info
# SYNOPSIS
~~~c
#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**This option has been superseded** by CURLINFO_TLS_SSL_PTR(3).
This option is exactly the same as CURLINFO_TLS_SSL_PTR(3) except in the case
of OpenSSL and wolfSSL. If the session *backend* is CURLSSLBACKEND_OPENSSL the
session *internals* pointer varies depending on the option:
## OpenSSL:
CURLINFO_TLS_SESSION(3) OpenSSL session *internals* is **SSL_CTX ***.
CURLINFO_TLS_SSL_PTR(3) OpenSSL session *internals* is **SSL ***.
You can obtain an **SSL_CTX** pointer from an SSL pointer using OpenSSL
function *SSL_get_SSL_CTX(3)*. Therefore unless you need compatibility
with older versions of libcurl use CURLINFO_TLS_SSL_PTR(3). Refer to
that document for more information.
## wolfSSL
CURLINFO_TLS_SESSION(3) wolfSSL session *internals* is **WOLFSSL_CTX ***.
CURLINFO_TLS_SSL_PTR(3) wolfSSL session *internals* is **WOLFSSL ***.
You can obtain an **WOLFSSL_CTX** pointer from an SSL pointer using wolfSSL
function *wolfSSL_get_SSL_CTX(3)*. Therefore unless you need compatibility
with older versions of libcurl use CURLINFO_TLS_SSL_PTR(3). Refer to
that document for more information.
# %PROTOCOLS%
# EXAMPLE
~~~c
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode result;
struct curl_tlssessioninfo *tls;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
result = curl_easy_perform(curl);
if(result)
printf("error: %s\n", curl_easy_strerror(result));
curl_easy_getinfo(curl, CURLINFO_TLS_SESSION, &tls);
curl_easy_cleanup(curl);
}
}
~~~
# DEPRECATED
Deprecated since 7.48.0
# %AVAILABILITY%
# RETURN VALUE
curl_easy_getinfo(3) returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
libcurl-errors(3).
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