=pod

=head1 NAME

SSL_SESSION_get0_id_context,
SSL_SESSION_set1_id_context
- get and set the SSL ID context associated with a session

=head1 SYNOPSIS

 #include <openssl/ssl.h>

 const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s,
                                                  unsigned int *len)
 int SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx,
                                unsigned int sid_ctx_len);

=head1 DESCRIPTION

See L<SSL_CTX_set_session_id_context(3)> for further details on session ID
contexts.

SSL_SESSION_get0_id_context() returns the ID context associated with
the SSL/TLS session B<s>. The length of the ID context is written to
B<*len> if B<len> is not NULL.

The value returned is a pointer to an object maintained within B<s> and
should not be released.

SSL_SESSION_set1_id_context() takes a copy of the provided ID context given in
B<sid_ctx> and associates it with the session B<s>. The length of the ID context
is given by B<sid_ctx_len> which must not exceed SSL_MAX_SID_CTX_LENGTH bytes.

=head1 RETURN VALUES

SSL_SESSION_set1_id_context() returns 1 on success or 0 on error.

=head1 SEE ALSO

L<ssl(7)>,
L<SSL_set_session_id_context(3)>

=head1 HISTORY

The SSL_SESSION_get0_id_context() function was added in OpenSSL 1.1.0.

=head1 COPYRIGHT

Copyright 2015-2016 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
L<https://www.openssl.org/source/license.html>.

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