SSL_CTX_SET_QUIET_SHU... BSD Library Functions Manual SSL_CTX_SET_QUIET_SHU...NAME
SSL_CTX_set_quiet_shutdown, SSL_CTX_get_quiet_shutdown,
SSL_set_quiet_shutdown, SSL_get_quiet_shutdown — manipulate shutdown be‐
haviour
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.
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 shut down, 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 stan‐
dard.
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 cur‐
rent setting.
SEE ALSOssl(3), SSL_clear(3), SSL_free(3), SSL_new(3), SSL_set_shutdown(3),
SSL_shutdown(3)BSD April 26, 2024 BSD
