Question

我当前正在构建一个通过WebSocket (via Java WebSockets from TooTallNate)连接到服务器的Android应用。问题是在我的Moto Z Play（Android 8.0）和Acer Iconia A3-A40（Android 6.0）上，WebSocket在随机时间（介于8到25分钟之间）后关闭。在我的HTC ONE（Android 5.0）上，在我添加了唤醒锁和wifilock（让它运行3h，运行完美）之后，这没有发生。在Android Studio模拟器上不会发生此问题。在我的Moto Z Play上，在关闭WebSocket之前，我收到以下日志：

> 12-14 19:16:23.409 1443-2088/? I/chatty: uid=1000(system) IpManager.wlan0 expire 1 line  
12-14 19:16:23.411 946-1266/? D/CommandListener: Setting iface cfg  
12-14 19:16:23.412 1443-16705/? I/chatty: uid=1000 system_server expire 1 line  
12-14 19:16:23.412 1443-16703/? I/chatty: uid=1000 system_server expire 1 line  
12-14 19:16:23.461 2125-2125/? E/wpa_supplicant: disconnect rssi= -68  
12-14 19:16:23.462 2125-2125/? I/wpa_supplicant: wlan0: CTRL-EVENT-DISCONNECTED bssid=f5:eb:3d:bf:de:b6 reason=3 locally_generated=1 disconnect_rssi=68  
12-14 19:16:23.464 2125-2125/? E/wpa_supplicant: nl80211: Failed to open /proc/sys/net/ipv4/conf/wlan0/drop_unicast_in_l2_multicast: No such file or directory  
    nl80211: Failed to set IPv4 unicast in multicast filter  
12-14 19:16:23.474 946-1257/? I/Netd: Destroyed 1 sockets on <the ipadress of the smartphone> in 1.0 ms  
12-14 19:16:23.479 2125-2125/? E/wpa_supplicant: eap_proxy: eap_proxy_notify_config  
    nl80211: Failed to open /proc/sys/net/ipv4/conf/wlan0/drop_unicast_in_l2_multicast: No such file or directory  
12-14 19:16:23.479 20544-20708 D/SocketSerivce: onClose (Here the WebSocket is closed)  
12-14 19:16:23.479 2125-2125/? E/wpa_supplicant: nl80211: Failed to set IPv4 unicast in multicast filter  
12-14 19:16:23.493 2125-2125/? E/wpa_supplicant: eap_proxy: eap_proxy_notify_config  
    eap_proxy: eap_proxy_notify_config

我做了一些研究，认为这将是一个打do睡的问题，它会暂停网络访问，但是有一些反对意见：

websocket在ForegroundService中启动（不包括在打do睡中？）
设备已插入（插入时不会启动打start）并且websocket仍然停止
即使更改电池优化，它仍然会发生（一段时间后仍会发生）

（但我可能是错的）

我到目前为止所做的事情：
通过以下方式启动ForegroundService：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
      startForegroundService(intent);
}else{
      startService(intent);
}

获取wakeLock和wifilock（并在websocket关闭时释放）：

powerManager = (PowerManager)getSystemService(Context.POWER_SERVICE);
wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WakeLockMyApp");

wifiManager = (WifiManager)getApplicationContext().getSystemService(Context.WIFI_SERVICE);
wifiLock = wifiManager.createWifiLock(WifiManager.WIFI_MODE_FULL, "WifiLockMyApp");

wakeLock.acquire();
wifiLock.acquire();

检查了onStartCommand-Method

startForeground(..)
return START_STICKY;

提前感谢

ForegroundService中的WebSocket停止

0 个答案: