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@@ -5,7 +5,8 @@
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SSL_set_num_tickets,
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SSL_get_num_tickets,
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SSL_CTX_set_num_tickets,
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-SSL_CTX_get_num_tickets
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+SSL_CTX_get_num_tickets,
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+SSL_new_session_ticket
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- control the number of TLSv1.3 session tickets that are issued
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=head1 SYNOPSIS
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@@ -16,6 +17,7 @@ SSL_CTX_get_num_tickets
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size_t SSL_get_num_tickets(SSL *s);
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int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets);
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size_t SSL_CTX_get_num_tickets(SSL_CTX *ctx);
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+ int SSL_new_session_ticket(SSL *s);
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=head1 DESCRIPTION
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@@ -40,14 +42,29 @@ handshake then SSL_set_num_tickets() can be called again prior to calling
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SSL_verify_client_post_handshake() to update the number of tickets that will be
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sent.
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+To issue tickets after other events (such as application-layer changes),
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+SSL_new_session_ticket() is used by a server application to request that a new
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+ticket be sent when it is safe to do so. New tickets are only allowed to be
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+sent in this manner after the initial handshake has completed, and only for TLS
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+1.3 connections. The ticket generation and transmission are delayed until the
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+server is starting a new write operation, so that it is bundled with other
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+application data being written and properly aligned to a record boundary.
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+SSL_new_session_ticket() can be called more than once to request additional
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+tickets be sent; all such requests are queued and written together when it is
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+safe to do so. Note that a successful return from SSL_new_session_ticket()
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+indicates only that the request to send a ticket was processed, not that the
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+ticket itself was sent. To be notified when the ticket itself is sent, a
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+new-session callback can be registered with L<SSL_CTX_sess_set_new_cb(3)> that
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+will be invoked as the ticket or tickets are generated.
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+
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SSL_CTX_get_num_tickets() and SSL_get_num_tickets() return the number of
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tickets set by a previous call to SSL_CTX_set_num_tickets() or
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SSL_set_num_tickets(), or 2 if no such call has been made.
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=head1 RETURN VALUES
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-SSL_CTX_set_num_tickets() and SSL_set_num_tickets() return 1 on success or 0 on
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-failure.
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+SSL_CTX_set_num_tickets(), SSL_set_num_tickets(), and
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+SSL_new_session_ticket() return 1 on success or 0 on failure.
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SSL_CTX_get_num_tickets() and SSL_get_num_tickets() return the number of tickets
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that have been previously set.
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@@ -58,7 +75,9 @@ L<ssl(7)>
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=head1 HISTORY
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-These functions were added in OpenSSL 1.1.1.
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+SSL_new_session_ticket() was added in OpenSSL 3.0.0.
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+SSL_set_num_tickets(), SSL_get_num_tickets(), SSL_CTX_set_num_tickets(), and
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+SSL_CTX_get_num_tickets() were added in OpenSSL 1.1.1.
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=head1 COPYRIGHT
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