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.\" ========================================================================
.\"
.IX Title "SSL_set_shutdown 3openssl"
.TH SSL_set_shutdown 3openssl "2016-05-03" "1.0.1t" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
SSL_set_shutdown, SSL_get_shutdown \- manipulate shutdown state of an SSL connection
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& void SSL_set_shutdown(SSL *ssl, int mode);
\&
\& int SSL_get_shutdown(const SSL *ssl);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fISSL_set_shutdown()\fR sets the shutdown state of \fBssl\fR to \fBmode\fR.
.PP
\&\fISSL_get_shutdown()\fR returns the shutdown mode of \fBssl\fR.

.\" Oracle has added the ARC stability level to this manual page
.SH ATTRIBUTES
See
.BR attributes (5)
for descriptions of the following attributes:
.sp
.TS
box;
cbp-1 | cbp-1
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE 
=
Availability	library/security/openssl
=
Stability	Uncommitted
.TE 
.PP
.SH "NOTES"
.IX Header "NOTES"
The shutdown state of an ssl connection is a bitmask of:
.IP "0" 4
No shutdown setting, yet.
.IP "\s-1SSL_SENT_SHUTDOWN\s0" 4
.IX Item "SSL_SENT_SHUTDOWN"
A \*(L"close notify\*(R" shutdown alert was sent to the peer, the connection is being
considered closed and the session is closed and correct.
.IP "\s-1SSL_RECEIVED_SHUTDOWN\s0" 4
.IX Item "SSL_RECEIVED_SHUTDOWN"
A shutdown alert was received form the peer, either a normal \*(L"close notify\*(R"
or a fatal error.
.PP
\&\s-1SSL_SENT_SHUTDOWN\s0 and \s-1SSL_RECEIVED_SHUTDOWN\s0 can be set at the same time.
.PP
The shutdown state of the connection is used to determine the state of
the ssl session. If the session is still open, when
\&\fISSL_clear\fR\|(3) or \fISSL_free\fR\|(3) is called,
it is considered bad and removed according to \s-1RFC2246\s0.
The actual condition for a correctly closed session is \s-1SSL_SENT_SHUTDOWN\s0
(according to the \s-1TLS\s0 \s-1RFC\s0, it is acceptable to only send the \*(L"close notify\*(R"
alert but to not wait for the peer's answer, when the underlying connection
is closed).
\&\fISSL_set_shutdown()\fR can be used to set this state without sending a
close alert to the peer (see \fISSL_shutdown\fR\|(3)).
.PP
If a \*(L"close notify\*(R" was received, \s-1SSL_RECEIVED_SHUTDOWN\s0 will be set,
for setting \s-1SSL_SENT_SHUTDOWN\s0 the application must however still call
\&\fISSL_shutdown\fR\|(3) or \fISSL_set_shutdown()\fR itself.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fISSL_set_shutdown()\fR does not return diagnostic information.
.PP
\&\fISSL_get_shutdown()\fR returns the current setting.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIssl\fR\|(3), \fISSL_shutdown\fR\|(3),
\&\fISSL_CTX_set_quiet_shutdown\fR\|(3),
\&\fISSL_clear\fR\|(3), \fISSL_free\fR\|(3)


.\" Oracle has added source availability information to this manual page
This software was built from source available at https://java.net/projects/solaris-userland.  The original community source was downloaded from  http://www.openssl.org/source/openssl-1.0.1t.tar.gz

Further information about this software can be found on the open source community website at http://www.openssl.org/.