Merge "ApfFilter: use elapsedRealTime for RA lifetime"

        mReceiveThread.start();

    }

    // Returns seconds since Unix Epoch.

    // TODO: use SystemClock.elapsedRealtime() instead

    // Returns seconds since device boot.

    private static long curTime() {

        return System.currentTimeMillis() / DateUtils.SECOND_IN_MILLIS;

        return SystemClock.elapsedRealtime() / DateUtils.SECOND_IN_MILLIS;

    }

    public static class InvalidRaException extends Exception {