Function olm_sys::olm_init_outbound_group_session

pub unsafe extern "C" fn olm_init_outbound_group_session(
    session: *mut OlmOutboundGroupSession, 
    random: *mut u8, 
    random_length: usize
) -> usize

Start a new outbound group session. Returns olm_error() on failure. On failure last_error will be set with an error code. The last_error will be NOT_ENOUGH_RANDOM if the number of random bytes was too small.