SSL_SESSION_get0_hostname.3ssl man page
SSL_SESSION_get0_hostname — retrieve the SNI hostname associated with a session
#include <openssl/ssl.h> const char *SSL_SESSION_get0_hostname(const SSL_SESSSION *s);
SSL_SESSION_get0_hostname() retrieves the SNI value that was sent by the client when the session was created, or NULL if no value was sent.
The value returned is a pointer to memory maintained within s and should not be free'd.
ssl(3), d2i_SSL_SESSION(3), SSL_SESSION_get_time(3), SSL_SESSION_free(3)
Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.