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(SSL_CTX *ctx);
void SSL_set_quiet_shutdown(SSL
*ssl, int mode);
int SSL_get_quiet_shutdown(SSL *ssl);
DESCRIPTION
SSL_CTX_set_quiet_shutdown() sets the "quiet shutdown" flag
for ctx to be mode. SSL objects created from
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.
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() 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(3), SSL_shutdown(3), SSL_set_shutdown(3), SSL_new(3), SSL_clear(3), SSL_free(3)
