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+---
+c: Copyright (C) Daniel Stenberg, <daniel.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)
+---
+
+# NAME
+
+CURLINFO_TLS_SESSION - get 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+**This option has been superseded** by CURLINFO_TLS_SSL_PTR(3) which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(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.
+
+# PROTOCOLS
+
+All TLS-based
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  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);
+    if(res)
+      printf("error: %s\n", curl_easy_strerror(res));
+    curl_easy_getinfo(curl, CURLINFO_TLS_SESSION, &tls);
+    curl_easy_cleanup(curl);
+  }
+}
+~~~
+
+# AVAILABILITY
+
+Added in 7.34.0. Deprecated since 7.48.0 and supported OpenSSL, GnuTLS, and
+NSS only up until this version was released.
+
+# RETURN VALUE
+
+Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.