int gnutls_session_get_data(gnutls_session_t session, void * session_data, size_t * session_data_size);
is a gnutls_session_t structure.
void * session_data
is a pointer to space to hold the session.
size_t * session_data_size
is the session_data's size, or it will be set by the function.
Returns all session parameters, in order to support resuming. The
client should call this, and keep the returned session, if he
wants to resume that current version later by calling
gnutls_session_set_data() This function must be called after a
Resuming sessions is really useful and speedups connections after
a succesful one.
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise
an error code is returned.