https://qooah.com/2015/04/22/android-wear-%e6%9c%89%e6%9b%b4%e6%96%b0-%e6%9c%89-wi-fi-%e5%82%b3%e9%80%81%e6%9b%b4%e5%bf%ab-%e4%bd%a0%e6%89%8b%e9%8c%b6%e6%9c%89%e4%bb%bd%e5%97%8e/