SSL_CTX_SET_QUIET_SHUTDOWN - Online Linux Manual PageSection : 3
Updated : 2021-03-26
Source : 1.1.1k
Note : OpenSSL
NAMESSL_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);
DESCRIPTIONSSL_CTX_set_quiet_shutdown() 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.
NOTESNormally 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 VALUESSSL_CTX_set_quiet_shutdown() 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 ALSOssl (7), SSL_shutdown (3), SSL_set_shutdown (3), SSL_new (3), SSL_clear (3), SSL_free (3)
COPYRIGHTCopyright 2001−2018 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (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>. 0
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