Manual Pages for UNIX Operating System command usage for man SSL_shutdown

OpenSSL                                    SSL_shutdown(3openssl)



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     SSL_shutdown - shut down a TLS/SSL connection

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      #include 

      int SSL_shutdown(SSL *ssl);


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     SSL_shutdown() shuts down an active TLS/SSL connection. It
     sends the "close notify" shutdown alert to the peer.

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     SSL_shutdown() tries to send the "close notify" shutdown
     alert to the peer.  Whether the operation succeeds or not,
     the SSL_SENT_SHUTDOWN flag is set and a currently open
     session is considered closed and good and will be kept in
     the session cache for further reuse.

     The shutdown procedure consists of 2 steps: the sending of
     the "close notify" shutdown alert and the reception of the
     peer's "close notify" shutdown alert. According to the TLS
     standard, it is acceptable for an application to only send
     its shutdown alert and then close the underlying connection
     without waiting for the peer's response (this way resources
     can be saved, as the process can already terminate or serve
     another connection).  When the underlying connection shall
     be used for more communications, the complete shutdown
     procedure (bidirectional "close notify" alerts) must be
     performed, so that the peers stay synchronized.

     SSL_shutdown() supports both uni- and bidirectional shutdown
     by its 2 step behaviour.





















14/Nov/2004            Last change: 0.9.8o                      1