curl/docs/libcurl/opts/CURLINFO_TLS_SESSION.3

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.TH CURLINFO_TLS_SESSION 3 "12 Sep 2015" "libcurl 7.44.0" "curl_easy_getinfo options"
.SH NAME
CURLINFO_TLS_SESSION \- get TLS session info
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_TLS_SESSION,
struct curl_tlssessioninfo **session);
.SH DESCRIPTION
Pass a pointer to a 'struct curl_tlssessioninfo *'. The pointer will be
initialized to refer to a 'struct curl_tlssessioninfo *' that will contain an
enum indicating the SSL library used for the handshake and the respective
internal TLS session structure of this underlying SSL library.
This may then be used to extract certificate information in a format
convenient for further processing, such as manual validation. NOTE: this
option may not be available for all SSL backends; unsupported SSL backends
will return 'CURLSSLBACKEND_NONE' to indicate that they are not supported;
this does not mean that no SSL backend was used.
.nf
struct curl_tlssessioninfo {
curl_sslbackend backend;
void *internals;
};
.fi
The \fIinternals\fP struct member will point to a TLS library specific pointer
with the following underlying types:
.RS
.IP OpenSSL
SSL_CTX *
.IP GnuTLS
gnutls_session_t
.IP NSS
PRFileDesc *
.IP gskit
gsk_handle
.RE
.SH PROTOCOLS
All TLS-based
.SH EXAMPLE
TODO
.SH AVAILABILITY
Added in 7.34.0
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR curl_easy_getinfo "(3), " curl_easy_setopt "(3), "