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NAME

d2i_SSL_SESSION, i2d_SSL_SESSION - convert SSL_SESSION object from/to ASN1 representation
 

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

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

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

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

Index

NAME

SYNOPSIS

DESCRIPTION

NOTES

RETURN VALUES

SEE ALSO

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