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    Command:

    d2i_SSL_SESSION

    
    
    
    

    SYNOPSIS

            #include <openssl/ssl.h>
    
            SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp, long length);
            int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp);
    
    
    

    DESCRIPTION

           d2i_SSL_SESSION() transforms the external ASN1 representation of an
           SSL/TLS session, stored as binary data at location pp with length
           length, into an SSL_SESSION object.
    
           i2d_SSL_SESSION() transforms the SSL_SESSION object in into the ASN1
           representation and stores it into the memory location pointed to by pp.
           The length of the resulting ASN1 representation is returned. If pp is
           the NULL pointer, only the length is calculated and returned.
    
    
    

    NOTES

           The SSL_SESSION object is built from several malloc()ed parts, it can
           therefore not be moved, copied or stored directly. In order to store
           session data on disk or into a database, it must be transformed into a
           binary ASN1 representation.
    
           When using d2i_SSL_SESSION(), the SSL_SESSION object is automatically
           allocated. The reference count is 1, so that the session must be
           explicitly removed using SSL_SESSION_free(3), unless the SSL_SESSION
           object is completely taken over, when being called inside the
           get_session_cb() (see SSL_CTX_sess_set_get_cb(3)).
    
           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).
    
           When using i2d_SSL_SESSION(), the memory location pointed to by pp must
           be large enough to hold the binary representation of the session. There
           is no known limit on the size of the created ASN1 representation, so
           the necessary amount of space should be obtained by first calling
           i2d_SSL_SESSION() with pp=NULL, and obtain the size needed, then
           allocate the memory and call i2d_SSL_SESSION() again.
    
    
    

    RETURN VALUES

           d2i_SSL_SESSION() returns a pointer to the newly allocated SSL_SESSION
           object. In case of failure the NULL-pointer is returned and the error
           message can be retrieved from the error stack.
    
           i2d_SSL_SESSION() returns the size of the ASN1 representation in bytes.
           When the session is not valid, 0 is returned and no operation is
           performed.
    
    
    

    SEE ALSO

    
    
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