InternetConnection

public static IEnumerator InternetConnection(Action<bool> done, float waitTime = 2)
    {
        UnityWebRequest www = UnityWebRequest.Get("http://google.com");
        yield return www;
        yield return new WaitForSeconds(waitTime);
        if (www.error != null)
        {
            done(false);
        }
        else
        {
            done(true);
        }
    }