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-rw-r--r--doc/man3/SSL_CTX_set_session_ticket_cb.pod6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/man3/SSL_CTX_set_session_ticket_cb.pod b/doc/man3/SSL_CTX_set_session_ticket_cb.pod
index c7b51dd16b..3066534223 100644
--- a/doc/man3/SSL_CTX_set_session_ticket_cb.pod
+++ b/doc/man3/SSL_CTX_set_session_ticket_cb.pod
@@ -77,6 +77,12 @@ the key that was used to encrypt the session ticket.
When the B<gen_cb> callback is invoked, the SSL_get_session() function can be
used to retrieve the SSL_SESSION for SSL_SESSION_set1_ticket_appdata().
+By default, in TLSv1.2 and below, a new session ticket is not issued on a
+successful resumption and therefore B<gen_cb> will not be called. In TLSv1.3 the
+default behaviour is to always issue a new ticket on resumption. In both cases
+this behaviour can be changed if a ticket key callback is in use (see
+L<SSL_CTX_set_tlsext_ticket_key_cb(3)>).
+
=head1 RETURN VALUES
The SSL_CTX_set_session_ticket_cb(), SSL_SESSION_set1_ticket_appdata() and