|SSL_SET_SHUTDOWN(3)||Library Functions Manual||SSL_SET_SHUTDOWN(3)|
SSL_set_shutdown() sets the shutdown state of ssl to mode.
SSL_get_shutdown() returns the shutdown
mode of ssl.
The shutdown state of an ssl connection is a bitmask of:
SSL_RECEIVED_SHUTDOWN can be set at the same
The shutdown state of the connection is used to determine the
state of the ssl session. If the session is still open
when SSL_clear(3) or
SSL_free(3) is called, it is considered
bad and removed according to RFC2246. The actual condition for a correctly
closed session is
SSL_SENT_SHUTDOWN (according to
the TLS RFC, it is acceptable to only send the “close notify”
alert but to not wait for the peer's answer when the underlying connection
SSL_set_shutdown() can be used to set
this state without sending a close alert to the peer (see
If a “close notify” was received,
SSL_RECEIVED_SHUTDOWN will be set, but to set
SSL_SENT_SHUTDOWN the application must still call
SSL_set_shutdown() does not return diagnostic information.
SSL_get_shutdown() returns the current
SSL_get_shutdown() first appeared in SSLeay 0.8.0 and have been available since OpenBSD 2.4.
|March 27, 2018||OpenBSD-current|