SSL_set_shutdown - manipulate shutdown state of an SSL connection
#include <openssl/ssl.h> void SSL_set_shutdown(SSL *ssl, int mode); int SSL_get_shutdown(const SSL *ssl);
OpenSSL SSL_set_shutdown(3openssl) NAME SSL_set_shutdown, SSL_get_shutdown - manipulate shutdown state of an SSL connection SYNOPSIS #include <openssl/ssl.h> void SSL_set_shutdown(SSL *ssl, int mode); int SSL_get_shutdown(const SSL *ssl); DESCRIPTION SSL_set_shutdown() sets the shutdown state of ssl to mode. SSL_get_shutdown() returns the shutdown mode of ssl. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+--------------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+--------------------------+ |Availability | library/security/openssl | +---------------+--------------------------+ |Stability | Pass-through uncommitted | +---------------+--------------------------+ NOTES The shutdown state of an ssl connection is a bitmask of: 0 No shutdown setting, yet. SSL_SENT_SHUTDOWN A "close notify" shutdown alert was sent to the peer, the connection is being considered closed and the session is closed and correct. SSL_RECEIVED_SHUTDOWN A shutdown alert was received form the peer, either a normal "close notify" or a fatal error. SSL_SENT_SHUTDOWN and SSL_RECEIVED_SHUTDOWN can be set at the same time. 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 is closed). SSL_set_shutdown() can be used to set this state without sending a close alert to the peer (see SSL_shutdown(3)). If a "close notify" was received, SSL_RECEIVED_SHUTDOWN will be set, for setting SSL_SENT_SHUTDOWN the application must however still call SSL_shutdown(3) or SSL_set_shutdown() itself. Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://www.openssl.org/source/openssl-1.0.2ze.tar.gz. Further information about this software can be found on the open source community website at https://www.openssl.org/. RETURN VALUES SSL_set_shutdown() does not return diagnostic information. SSL_get_shutdown() returns the current setting. SEE ALSO ssl(3), SSL_shutdown(3), SSL_CTX_set_quiet_shutdown(3), SSL_clear(3), SSL_free(3) 1.0.2ze 2022-05-03 SSL_set_shutdown(3openssl)