76 lines
1.9 KiB
Markdown
76 lines
1.9 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_TLS_SESSION
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_TLS_SSL_PTR (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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---
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# NAME
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CURLINFO_TLS_SESSION - get TLS session info
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_TLS_SESSION,
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struct curl_tlssessioninfo **session);
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~~~
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# DESCRIPTION
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**This option has been superseded** by CURLINFO_TLS_SSL_PTR(3) which
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was added in 7.48.0. The only reason you would use this option instead is if
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you could be using a version of libcurl earlier than 7.48.0.
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This option is exactly the same as CURLINFO_TLS_SSL_PTR(3) except in the
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case of OpenSSL. If the session *backend* is CURLSSLBACKEND_OPENSSL the
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session *internals* pointer varies depending on the option:
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CURLINFO_TLS_SESSION(3) OpenSSL session *internals* is **SSL_CTX ***.
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CURLINFO_TLS_SSL_PTR(3) OpenSSL session *internals* is **SSL ***.
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You can obtain an **SSL_CTX** pointer from an SSL pointer using OpenSSL
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function *SSL_get_SSL_CTX(3)*. Therefore unless you need compatibility
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with older versions of libcurl use CURLINFO_TLS_SSL_PTR(3). Refer to
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that document for more information.
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# PROTOCOLS
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All TLS-based
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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struct curl_tlssessioninfo *tls;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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res = curl_easy_perform(curl);
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if(res)
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printf("error: %s\n", curl_easy_strerror(res));
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curl_easy_getinfo(curl, CURLINFO_TLS_SESSION, &tls);
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.34.0. Deprecated since 7.48.0 and supported OpenSSL, GnuTLS, and
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NSS only up until this version was released.
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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