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SSL_set_quiet_shutdown.3ssl
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" SSL_CTX_set_quiet_shutdown, SSL_CTX_get_quiet_shutdown, SSL_set_quiet_shutdown, SSL_get_quiet_shutdown \- manipulate shutdown behaviour .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #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); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBSSL_CTX_set_quiet_shutdown()\fR sets the \*(L"quiet shutdown\*(R" flag for \fBctx\fR to be \&\fBmode\fR. \s-1SSL\s0 objects created from \fBctx\fR inherit the \fBmode\fR valid at the time \&\fBSSL_new\fR\|(3) is called. \fBmode\fR may be 0 or 1. .PP \&\fBSSL_CTX_get_quiet_shutdown()\fR returns the \*(L"quiet shutdown\*(R" setting of \fBctx\fR. .PP \&\fBSSL_set_quiet_shutdown()\fR sets the \*(L"quiet shutdown\*(R" flag for \fBssl\fR to be \&\fBmode\fR. The setting stays valid until \fBssl\fR is removed with \&\fBSSL_free\fR\|(3) or \fBSSL_set_quiet_shutdown()\fR is called again. It is not changed when \fBSSL_clear\fR\|(3) is called. \&\fBmode\fR may be 0 or 1. .PP \&\fBSSL_get_quiet_shutdown()\fR returns the \*(L"quiet shutdown\*(R" setting of \fBssl\fR. .SH "NOTES" .IX Header "NOTES" Normally when a \s-1SSL\s0 connection is finished, the parties must send out \&\*(L"close notify\*(R" alert messages using \fBSSL_shutdown\fR\|(3) for a clean shutdown. .PP When setting the \*(L"quiet shutdown\*(R" flag to 1, \fBSSL_shutdown\fR\|(3) will set the internal flags to SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN. (\fBSSL_shutdown\fR\|(3) then behaves like \&\fBSSL_set_shutdown\fR\|(3) called with SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN.) The session is thus considered to be shutdown, but no \*(L"close notify\*(R" alert is sent to the peer. This behaviour violates the \s-1TLS\s0 standard. .PP The default is normal shutdown behaviour as described by the \s-1TLS\s0 standard. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBSSL_CTX_set_quiet_shutdown()\fR and \fBSSL_set_quiet_shutdown()\fR do not return diagnostic information. .PP \&\fBSSL_CTX_get_quiet_shutdown()\fR and SSL_get_quiet_shutdown return the current setting. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBssl\fR\|(3), \fBSSL_shutdown\fR\|(3), \&\fBSSL_set_shutdown\fR\|(3), \fBSSL_new\fR\|(3), \&\fBSSL_clear\fR\|(3), \fBSSL_free\fR\|(3)
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