mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
98ca37e4aa
Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/10208)
73 lines
2.5 KiB
Plaintext
73 lines
2.5 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
SSL_set_num_tickets,
|
|
SSL_get_num_tickets,
|
|
SSL_CTX_set_num_tickets,
|
|
SSL_CTX_get_num_tickets
|
|
- control the number of TLSv1.3 session tickets that are issued
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/ssl.h>
|
|
|
|
int SSL_set_num_tickets(SSL *s, size_t num_tickets);
|
|
size_t SSL_get_num_tickets(SSL *s);
|
|
int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets);
|
|
size_t SSL_CTX_get_num_tickets(SSL_CTX *ctx);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
SSL_CTX_set_num_tickets() and SSL_set_num_tickets() can be called for a server
|
|
application and set the number of TLSv1.3 session tickets that will be sent to
|
|
the client after a full handshake. Set the desired value (which could be 0) in
|
|
the B<num_tickets> argument. Typically these functions should be called before
|
|
the start of the handshake.
|
|
|
|
The default number of tickets is 2; the default number of tickets sent following
|
|
a resumption handshake is 1 but this cannot be changed using these functions.
|
|
The number of tickets following a resumption handshake can be reduced to 0 using
|
|
custom session ticket callbacks (see L<SSL_CTX_set_session_ticket_cb(3)>).
|
|
|
|
Tickets are also issued on receipt of a post-handshake certificate from the
|
|
client following a request by the server using
|
|
L<SSL_verify_client_post_handshake(3)>. These new tickets will be associated
|
|
with the updated client identity (i.e. including their certificate and
|
|
verification status). The number of tickets issued will normally be the same as
|
|
was used for the initial handshake. If the initial handshake was a full
|
|
handshake then SSL_set_num_tickets() can be called again prior to calling
|
|
SSL_verify_client_post_handshake() to update the number of tickets that will be
|
|
sent.
|
|
|
|
SSL_CTX_get_num_tickets() and SSL_get_num_tickets() return the number of
|
|
tickets set by a previous call to SSL_CTX_set_num_tickets() or
|
|
SSL_set_num_tickets(), or 2 if no such call has been made.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
SSL_CTX_set_num_tickets() and SSL_set_num_tickets() return 1 on success or 0 on
|
|
failure.
|
|
|
|
SSL_CTX_get_num_tickets() and SSL_get_num_tickets() return the number of tickets
|
|
that have been previously set.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<ssl(7)>
|
|
|
|
=head1 HISTORY
|
|
|
|
These functions were added in OpenSSL 1.1.1.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the Apache License 2.0 (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
|