int gnutls_init(gnutls_session_t * session, gnutls_connection_end_t con_end);
gnutls_session_t * session
is a pointer to a gnutls_session_t structure.
indicate if this session is to be used for server or client.
This function initializes the current session to null. Every
session must be initialized before use, so internal structures can
be allocated. This function allocates structures which can only
be free'd by calling gnutls_deinit(). Returns zero on success.
con_end can be one of GNUTLS_CLIENT and GNUTLS_SERVER.