1SSL_CTX_set_quiet_shutdown(3)       OpenSSL      SSL_CTX_set_quiet_shutdown(3)
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NAME

6       SSL_CTX_set_quiet_shutdown, SSL_CTX_get_quiet_shutdown,
7       SSL_set_quiet_shutdown, SSL_get_quiet_shutdown - manipulate shutdown
8       behaviour
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SYNOPSIS

11        #include <openssl/ssl.h>
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13        void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
14        int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
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16        void SSL_set_quiet_shutdown(SSL *ssl, int mode);
17        int SSL_get_quiet_shutdown(const SSL *ssl);
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DESCRIPTION

20       SSL_CTX_set_quiet_shutdown() sets the "quiet shutdown" flag for ctx to
21       be mode. SSL objects created from ctx inherit the mode valid at the
22       time SSL_new(3) is called. mode may be 0 or 1.
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24       SSL_CTX_get_quiet_shutdown() returns the "quiet shutdown" setting of
25       ctx.
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27       SSL_set_quiet_shutdown() sets the "quiet shutdown" flag for ssl to be
28       mode. The setting stays valid until ssl is removed with SSL_free(3) or
29       SSL_set_quiet_shutdown() is called again.  It is not changed when
30       SSL_clear(3) is called.  mode may be 0 or 1.
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32       SSL_get_quiet_shutdown() returns the "quiet shutdown" setting of ssl.
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NOTES

35       Normally when a SSL connection is finished, the parties must send out
36       "close notify" alert messages using SSL_shutdown(3) for a clean
37       shutdown.
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39       When setting the "quiet shutdown" flag to 1, SSL_shutdown(3) will set
40       the internal flags to SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN.
41       (SSL_shutdown(3) then behaves like SSL_set_shutdown(3) called with
42       SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN.)  The session is thus
43       considered to be shutdown, but no "close notify" alert is sent to the
44       peer. This behaviour violates the TLS standard.
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46       The default is normal shutdown behaviour as described by the TLS
47       standard.
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RETURN VALUES

50       SSL_CTX_set_quiet_shutdown() and SSL_set_quiet_shutdown() do not return
51       diagnostic information.
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53       SSL_CTX_get_quiet_shutdown() and SSL_get_quiet_shutdown return the
54       current setting.
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SEE ALSO

57       ssl(3), SSL_shutdown(3), SSL_set_shutdown(3), SSL_new(3), SSL_clear(3),
58       SSL_free(3)
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621.0.2o                            2020-01-28     SSL_CTX_set_quiet_shutdown(3)
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