SSL_SESSION_get_ex_new_index(3)

     NAME
          SSL_SESSION_get_ex_new_index, SSL_SESSION_set_ex_data,
          SSL_SESSION_get_ex_data - internal application specific data
          functions

     SYNOPSIS
           #include <openssl/ssl.h>

           int SSL_SESSION_get_ex_new_index(long argl, void *argp,
                          CRYPTO_EX_new *new_func,
                          CRYPTO_EX_dup *dup_func,
                          CRYPTO_EX_free *free_func);

           int SSL_SESSION_set_ex_data(SSL_SESSION *session, int idx, void *arg);

           void *SSL_SESSION_get_ex_data(SSL_SESSION *session, int idx);

           typedef int new_func(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
                          int idx, long argl, void *argp);
           typedef void free_func(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
                          int idx, long argl, void *argp);
           typedef int dup_func(CRYPTO_EX_DATA *to, CRYPTO_EX_DATA *from, void *from_d,
                          int idx, long argl, void *argp);


     DESCRIPTION
          Several OpenSSL structures can have application specific
          data attached to them.  These functions are used internally
          by OpenSSL to manipulate application specific data attached
          to a specific structure.

          SSL_SESSION_get_ex_new_index() is used to register a new
          index for application specific data.

          SSL_SESSION_set_ex_data() is used to store application data
          at arg for idx into the session object.

          SSL_SESSION_get_ex_data() is used to retrieve the
          information for idx from session.

          A detailed description for the *_get_ex_new_index()
          functionality can be found in RSA_get_ex_new_index(3).  The
          *_get_ex_data() and *_set_ex_data() functionality is
          described in CRYPTO_set_ex_data(3).

     WARNINGS
          The application data is only maintained for sessions held in
          memory. The application data is not included when dumping
          the session with i2d_SSL_SESSION() (and all functions
          indirectly calling the dump functions like
          PEM_write_SSL_SESSION() and PEM_write_bio_SSL_SESSION()) and
          can therefore not be restored.
     SEE ALSO
          ssl(3), RSA_get_ex_new_index(3), CRYPTO_set_ex_data(3)