MirBSD manpage: SSL_get0_session(3), SSL_get1_session(3), SSL_get_session(3)

SSL_GET_SESSION(3)           OpenSSL           SSL_GET_SESSION(3)


     SSL_get_session - retrieve TLS/SSL session data


      #include <openssl/ssl.h>

      SSL_SESSION *SSL_get_session(const SSL *ssl);
      SSL_SESSION *SSL_get0_session(const SSL *ssl);
      SSL_SESSION *SSL_get1_session(SSL *ssl);


     SSL_get_session() returns a pointer to the SSL_SESSION actu-
     ally used in ssl. The reference count of the SSL_SESSION is
     not incremented, so that the pointer can become invalid by
     other operations.

     SSL_get0_session() is the same as SSL_get_session().

     SSL_get1_session() is the same as SSL_get_session(), but the
     reference count of the SSL_SESSION is incremented by one.


     The ssl session contains all information required to re-
     establish the connection without a new handshake.

     SSL_get0_session() returns a pointer to the actual session.
     As the reference counter is not incremented, the pointer is
     only valid while the connection is in use. If SSL_clear(3)
     or SSL_free(3) is called, the session may be removed com-
     pletely (if considered bad), and the pointer obtained will
     become invalid. Even if the session is valid, it can be
     removed at any time due to timeout during

     If the data is to be kept, SSL_get1_session() will increment
     the reference count, so that the session will not be impli-
     citly removed by other operations but stays in memory. In
     order to remove the session SSL_SESSION_free(3) must be
     explicitly called once to decrement the reference count

     SSL_SESSION objects keep internal link information about the
     session cache list, when being inserted into one SSL_CTX
     object's session cache. One SSL_SESSION object, regardless
     of its reference count, must therefore only be used with one
     SSL_CTX object (and the SSL objects created from this
     SSL_CTX object).


     The following return values can occur:


MirBSD #10-current         2005-04-29                           1

SSL_GET_SESSION(3)           OpenSSL           SSL_GET_SESSION(3)

         There is no session available in ssl.

     Pointer to an SSL
         The return value points to the data of an SSL session.


     ssl(3), SSL_free(3), SSL_clear(3), SSL_SESSION_free(3)

MirBSD #10-current         2005-04-29                           2

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