- NAME
- SYNOPSIS
- DESCRIPTION
- NOTES
- RETURN VALUES
- SEE ALSO

# 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(const SSL_CTX *ctx);

     void SSL_set_quiet_shutdown(SSL *ssl, int mode);
     int SSL_get_quiet_shutdown(const SSL *ssl);

# DESCRIPTION

`SSL_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 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 or `SSL_set_quiet_shutdown()` is called again. It is not changed when SSL_clear 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 for a clean shutdown.

When setting the ``quiet shutdown'' flag to 1, SSL_shutdown will set the internal flags to SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN. (SSL_shutdown then behaves like SSL_set_shutdown 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, SSL_shutdown, SSL_set_shutdown, SSL_new, SSL_clear, SSL_free