CURLINFO_TLS_SESSION(3) | Library Functions Manual | CURLINFO_TLS_SESSION(3) |
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This option has been superseded by CURLINFO_TLS_SSL_PTR(3) which was added in 7.48.0.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(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
This functionality affects all TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
This option works only with the following TLS backends: GnuTLS and OpenSSL
EXAMPLE
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); } }
DEPRECATED
Deprecated since 7.48.0
AVAILABILITY
Added in curl 7.34.0
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSO
CURLINFO_TLS_SSL_PTR(3), curl_easy_getinfo(3), curl_easy_setopt(3)
2024-09-18 | libcurl |