SSL_CTX_SET_QUIET_SHUTDOWN(3ossl) OpenSSL SSL_CTX_SET_QUIET_SHUTDOWN(3ossl)
NAME
SSL_CTX_set_quiet_shutdown, SSL_CTX_get_quiet_shutdown,
SSL_set_quiet_shutdown, SSL_get_quiet_shutdown - manipulate shutdown
behaviour
SYNOPSIS
#include <openssl/ssl.h>
void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
void SSL_set_quiet_shutdown(SSL *ssl, int mode);
int SSL_get_quiet_shutdown(const SSL *ssl);
DESCRIPTION
SSL_CTX_set_quiet_shutdown(3) sets the "quiet shutdown" flag for ctx to
be mode. SSL objects created from ctx inherit the mode valid at the
time SSL_new(3) is called. mode may be 0 or 1.
SSL_CTX_get_quiet_shutdown() returns the "quiet shutdown" setting of
ctx.
SSL_set_quiet_shutdown() sets the "quiet shutdown" flag for ssl to be
mode. The setting stays valid until ssl is removed with SSL_free(3) or
SSL_set_quiet_shutdown() is called again. It is not changed when
SSL_clear(3) is called. mode may be 0 or 1.
SSL_get_quiet_shutdown() returns the "quiet shutdown" setting of ssl.
These functions are not supported for QUIC SSL objects.
SSL_set_quiet_shutdown() has no effect if called on a QUIC SSL object.
NOTES
Normally when a SSL connection is finished, the parties must send out
close_notify alert messages using SSL_shutdown(3) for a clean shutdown.
When setting the "quiet shutdown" flag to 1, SSL_shutdown(3) will set
the internal flags to SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN.
(SSL_shutdown(3) then behaves like SSL_set_shutdown(3) called with
SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN.) The session is thus
considered to be shutdown, but no close_notify alert is sent to the
peer. This behaviour violates the TLS standard.
The default is normal shutdown behaviour as described by the TLS
standard.
RETURN VALUES
SSL_CTX_set_quiet_shutdown(3) and SSL_set_quiet_shutdown() do not return
diagnostic information.
SSL_CTX_get_quiet_shutdown() and SSL_get_quiet_shutdown() return the
current setting.
SEE ALSO
ssl(7), SSL_shutdown(3), SSL_set_shutdown(3), SSL_new(3), SSL_clear(3),
SSL_free(3)
COPYRIGHT
Copyright 2001-2023 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
<https://www.openssl.org/source/license.html>.
3.3.2 2024-09-04 SSL_CTX_SET_QUIET_SHUTDOWN(3ossl)
openssl 3.3.2 - Generated Tue Sep 24 09:03:54 CDT 2024