1=pod 2 3=head1 NAME 4 5SSL_CTX_set_quiet_shutdown, SSL_CTX_get_quiet_shutdown, SSL_set_quiet_shutdown, SSL_get_quiet_shutdown - manipulate shutdown behaviour 6 7=head1 SYNOPSIS 8 9 #include <openssl/ssl.h> 10 11 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode); 12 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx); 13 14 void SSL_set_quiet_shutdown(SSL *ssl, int mode); 15 int SSL_get_quiet_shutdown(const SSL *ssl); 16 17=head1 DESCRIPTION 18 19SSL_CTX_set_quiet_shutdown() sets the "quiet shutdown" flag for B<ctx> to be 20B<mode>. SSL objects created from B<ctx> inherit the B<mode> valid at the time 21L<SSL_new(3)> is called. B<mode> may be 0 or 1. 22 23SSL_CTX_get_quiet_shutdown() returns the "quiet shutdown" setting of B<ctx>. 24 25SSL_set_quiet_shutdown() sets the "quiet shutdown" flag for B<ssl> to be 26B<mode>. The setting stays valid until B<ssl> is removed with 27L<SSL_free(3)> or SSL_set_quiet_shutdown() is called again. 28It is not changed when L<SSL_clear(3)> is called. 29B<mode> may be 0 or 1. 30 31SSL_get_quiet_shutdown() returns the "quiet shutdown" setting of B<ssl>. 32 33=head1 NOTES 34 35Normally when a SSL connection is finished, the parties must send out 36close_notify alert messages using L<SSL_shutdown(3)> 37for a clean shutdown. 38 39When setting the "quiet shutdown" flag to 1, L<SSL_shutdown(3)> 40will set the internal flags to SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN. 41(L<SSL_shutdown(3)> then behaves like 42L<SSL_set_shutdown(3)> called with 43SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN.) 44The session is thus considered to be shutdown, but no close_notify alert 45is sent to the peer. This behaviour violates the TLS standard. 46 47The default is normal shutdown behaviour as described by the TLS standard. 48 49=head1 RETURN VALUES 50 51SSL_CTX_set_quiet_shutdown() and SSL_set_quiet_shutdown() do not return 52diagnostic information. 53 54SSL_CTX_get_quiet_shutdown() and SSL_get_quiet_shutdown return the current 55setting. 56 57=head1 SEE ALSO 58 59L<ssl(7)>, L<SSL_shutdown(3)>, 60L<SSL_set_shutdown(3)>, L<SSL_new(3)>, 61L<SSL_clear(3)>, L<SSL_free(3)> 62 63=head1 COPYRIGHT 64 65Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved. 66 67Licensed under the Apache License 2.0 (the "License"). You may not use 68this file except in compliance with the License. You can obtain a copy 69in the file LICENSE in the source distribution or at 70L<https://www.openssl.org/source/license.html>. 71 72=cut 73