当手机处于睡眠模式时，WearableListenerService/Android Wear中的连接被拒绝

我正在开发一个Android Wear Watchface，它通过从Wear向我的移动应用发送MessageAPI请求来访问互联网，我正在运行一个WearableListenerService，在我的移动应用上，我从Wear-in-onMessageReceived接收请求，在onMessageReceived中，我启动一个异步任务从互联网检索图像

这一切正常

但是，如果手机在几分钟内处于非活动状态（屏幕为黑色，未通过USB连接到mac），则当AsyncTask尝试检索此线路上的inputstream时，我会收到“EconRefused-连接被服务器拒绝”：

InputStream is = (InputStream) new URL(mUrl).getContent();

例外情况如下：

java.net.ConnectException: failed to connect to dl.dropboxusercontent.com/xx.xx.xxx.xx (port 443): connect failed: ECONNREFUSED (Connection refused)
at libcore.io.IoBridge.connect(IoBridge.java:118)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:460)
at java.net.Socket.connect(Socket.java:838)
at com.android.okhttp.internal.Platform.connectSocket(Platform.java:131)
at com.android.okhttp.Connection.connect(Connection.java:101)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:294)
at com.android.okhttp.internal.http.HttpEngine.sendSocketRequest(HttpEngine.java:255)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:206)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:345)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:296)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.getHeaderField(HttpURLConnectionImpl.java:143)
at java.net.URLConnection.getContentType(URLConnection.java:326)
at java.net.URLConnection.getContent(URLConnection.java:193)
at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getContent(HttpsURLConnectionImpl.java:169)
at java.net.URL.getContent(URL.java:455)
at wear.webcam.MobileRequestListenerService$MyImageLoaderTask.doInBackground(MobileRequestListenerService.java:479)
at wear.webcam.MobileRequestListenerService$MyImageLoaderTask.doInBackground(MobileRequestListenerService.java:451)
at android.os.AsyncTask$2.call(AsyncTask.java:288)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
Caused by: libcore.io.ErrnoException: connect failed: ECONNREFUSED (Connection refused)
at libcore.io.Posix.connect(Native Method)
at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:85)
at libcore.io.IoBridge.connectErrno(IoBridge.java:131)
at libcore.io.IoBridge.connect(IoBridge.java:116)
... 23 more

• 我的应用程序会在一分钟后重试，当手机打开（屏幕打开）时，它会工作
• 这与我调用的服务器/url无关，因为我在不同的服务器上遇到相同的错误
• 这与Wifi无关，因为无论是在Wifi还是普通网络中，都会发生这种情况
• 这在PROD/Signed和DEBUG版本中发生
• 在通话前，我正在检查网络是否可用，并返回“true”，因此网络确实已打开

看起来这个问题可以通过获得一个wakelock来解决——但是到目前为止，这并没有解决问题

感谢您的帮助

---

安卓4.4.4索尼Xperia Z1；Android Wear 5.0.2。

解决了：原来，原因是Xperia上的节能选项：它被设置为“耐力模式”，导致设备无法唤醒

public boolean isNetworkAvailable() {
    ConnectivityManager cm = (ConnectivityManager)
            getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = cm.getActiveNetworkInfo();
    // if no network is available networkInfo will be null
    // otherwise check if we are connected
    if (networkInfo != null && networkInfo.isConnected()) {
        return true;
    }
    return false;
}