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=pod

=head1 NAME

SSL_session_reused - query whether a reused session was negotiated during handshake

=head1 SYNOPSIS

 #include <openssl/ssl.h>

 int SSL_session_reused(const SSL *ssl);

=head1 DESCRIPTION

Query, whether a reused session was negotiated during the handshake.

=head1 NOTES

During the negotiation, a client can propose to reuse a session. The server
then looks up the session in its cache. If both client and server agree
on the session, it will be reused and a flag is being set that can be
queried by the application.

=head1 RETURN VALUES

The following return values can occur:

=over 4

=item Z<>0

A new session was negotiated.

=item Z<>1

A session was reused.

=back

=head1 SEE ALSO

L<ssl(7)>, L<SSL_set_session(3)>,
L<SSL_CTX_set_session_cache_mode(3)>

=head1 COPYRIGHT

Copyright 2001-2019 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
L<https://www.openssl.org/source/license.html>.

=cut