Figure

Hi 王成
客户抓的日志是05/30号的实时日志，已经是第二天的日志了
请帮忙抓取历史日志，谢谢
已飞书同步此消息

Hi 王成
-----------------
05-29 22:47:09.466 18178 18178 I Monkey : Sleeping for 500 milliseconds
//最后一条monkey日志

05-29 22:47:09.486 18123 18125 I adbd : persist.adb.tls_server.enable changed to 0
05-29 22:47:09.486 18123 18125 I adbd : adb wifi stopped
//wifi adb 断了

05-29 22:47:09.528 0 0 I [34989.348005] libprocessgroup: Successfully killed process cgroup uid 0 pid 18123 in 32ms
05-29 22:47:09.533 0 0 I [34989.349623] init: Service 'adbd' (pid 18123) received signal 9
//adb 进程没了
-----------------
看日志应该是由于wifi adb断了，所以monkey停了
并无其他异常发生
请同步此信息给客户，谢谢

洪普，请帮忙分析wifi adb 断掉的原因，日志中是否有wifi 断开信息，

覃刚，这个能从setting 关闭这个原因再往下进行分析不？

Hi 周婷

覃刚，这个能从setting 关闭这个原因再往下进行分析不？

你是指monkey测试时，不让它操作设定里面的画面吗？
是的话，可以通过修改monkey测试的参数，在黑名单里加上这个应用，就不会测试setting了

请帮忙进行分析为何再settings 中关闭wifi 会导致adb -d 进程被杀掉

此问题的root case为 adbd被kill ,正常的关闭wifi或拔掉USB并不导致adbd被kill，其中如下关键字是个切入点，需要AF调查什么样的路径可以触发
AdbDebuggingManager: Wifi disabled. Disabling adbwifi.

从异常日志分析，异常链路如下：
wifi disable ---->> Disabling adbwifi. --->> adb wifi stopped --->> adbd killed ---->> monkey killed

目前做了如下调查

1. wifi disable引发的adb wifi stopped, 本地验证连接wifi adb后，使用下拉栏或setting界面，如下打印相同

05-28 13:04:31.194 21074 21245 I WifiService: setWifiEnabled package=com.android.settings uid=1000 enable=false
  05-28 13:04:31.200 21074 21226 D WifiActiveModeWarden: Shutting down all client mode managers
  05-28 13:04:31.200 21074 21226 D WifiClientModeManager[wlan0]:  currentstate: ConnectModeState
  05-28 13:04:31.205 21074 21074 D WifiP2pService: Wifi enabled=false
  05-28 13:04:31.217 21074 21226 D WifiClientModeManager[wlan0]: Active SubscriptionInfo list not found
  05-28 13:04:31.217 21074 21226 D WifiClientModeManager[wlan0]: The target role change info null
  05-28 13:04:31.217 21074 21226 D WifiClientModeManager[wlan0]: Continue to stop wifi
  05-28 13:04:31.220 21074 21226 D WifiClientModeManager[wlan0]: Stopping ClientModeImpl
  05-28 13:04:31.222 21074 21074 D WifiP2pService: Wifi enabled=false

但未出现如下异常打印，所以并未造成adbd被kill：

05-29 22:47:09.485  1513  1513 I AdbDebuggingManager: Wifi disabled. Disabling adbwifi.
  05-29 22:47:09.486 18123 18125 I adbd    : persist.adb.tls_server.enable changed to 0
  05-29 22:47:09.486 18123 18125 I adbd    : adb wifi stopped
  05-29 22:47:09.494   831   831 W android.hardware.wifi@1.0-service: No active wlan interfaces in use! Using default
  05-29 22:47:09.496 18123 18125 I adbd    : Waiting for persist.adb.tls_server.enable=1
  05-29 22:47:09.497     0     0 I [34989.315908] init: Sending signal 9 to service 'adbd' (pid 18123) process group...

其中如下关键字是个切入点，需要调AF查什么样的路径可以触发
AdbDebuggingManager: Wifi disabled. Disabling adbwifi.

1.1. 发现在下面的java文件会去设备属性persist.adb.tls_server.enable

1.1.1. AdbService.java

SystemProperties.get(WIFI_PERSISTENT_CONFIG_PROPERTY, "0")); in initAdbState()
   private static final String WIFI_PERSISTENT_CONFIG_PROPERTY = "persist.adb.tls_server.enable"; field in AdbService
  SystemProperties.set(WIFI_PERSISTENT_CONFIG_PROPERTY, "1"); in setAdbEnabled()

1.1.2. AdbDebuggingManager.java

private static final String WIFI_PERSISTENT_CONFIG_PROPERTY ="persist.adb.tls_server.enable";
   SystemProperties.set(WIFI_PERSISTENT_CONFIG_PROPERTY, "1"); in handleMessage()
   SystemProperties.set(WIFI_PERSISTENT_CONFIG_PROPERTY, "1"); in handleMessage()
   http://192.168.87.66:8006/source/xref/Pre_figure_turbox-c2130c-la1.1-vendor-dev/LINUX/android/frameworks/base/services/core/java/com/android/server/adb/AdbDebuggingManager.java#108
   Slog.i(TAG, "Wifi disabled. Disabling adbwifi.");
   连接wifi adb后，使用下拉状态栏或者setting界面去关闭wifi，并没有上述打印，但问题复现的日志中出现了此异常

1.2 . 不清楚上层在什么时候会去设置这个属性值,从adbd退出原因看，在退出前一直在等待这个属性设备

log: 05-29 22:47:09.496 18123 18125 I adbd : Waiting for persist.adb.tls_server.enable=1
   static void start_wifi_enabled_observer() {
     std::thread([]() {
         bool wifi_enabled = false;
         while (true) {
             std::string toggled_val = wifi_enabled ? "0" : "1";
             LOG(INFO) << "Waiting for " << kWifiEnabledProp << "=" << toggled_val;
             if (WaitForProperty(kWifiEnabledProp, toggled_val)) {
                 wifi_enabled = !wifi_enabled;
                 LOG(INFO) << kWifiEnabledProp << " changed to " << toggled_val;
                 if (wifi_enabled) {
                     enable_wifi_debugging();
                 } else {
                     disable_wifi_debugging();
                 }
             }
         }
      }).detach();
  }
   #endif  //__ANDROID__
  }  // namespace

2. adbd killed ---->> monkey killed

本地手动stop adbd 会造成monkey killed，这个是正常的，monkey需要adbd输出log

05-29 22:47:09.528     0     0 I [34989.348005] libprocessgroup: Successfully killed process cgroup uid 0 pid 18123 in 32ms
  05-29 22:47:09.533     0     0 I [34989.348533] init: Control message: Processed ctl.stop for 'adbd' from pid: 1513 (system_server)
  05-29 22:47:09.533     0     0 I [34989.349623] init: Service 'adbd' (pid 18123) received signal 9
  05-29 22:47:09.533     0     0 I [34989.350314] init: Untracked pid 18178 received signal 9
  05-29 22:47:09.533     0     0 I [34989.350477] init: processing action (init.svc.adbd=stopped) from (/system/etc/init/hw/init.usb.configfs.rc:14)

android/development/cmds/monkey/src/com/android/commands/monkey/MonkeySourceNetwork.java
   public MonkeySourceNetwork(int port) throws IOException {
          // Only bind this to local host.  This means that you can only
          // talk to the monkey locally, or though adb port forwarding.
          serverSocket = new ServerSocket(port,
                                          0, // default backlog
                                          InetAddress.getLocalHost());
      }

■ 结论
Android原生机制，关闭wifi的时候，会发送广播关闭adb_wifi_enabled, 后会通过adb service kill掉adbd进程；
跑monkey的时候可以在开发者选中关闭WirelessDebugging开关，然后再通过adb wifi跑monkey；

■ 分析
1. system_server中的adbdebug线程收到关闭wifi的广播后，会设置SettingsProvider中的值ADB_WIFI_ENABLED；
LINUX/android/frameworks/base/services/core/java/com/android/server/adb/AdbDebuggingManager.java

599              public void onReceive(Context context, Intent intent) {
600                  String action = intent.getAction();
601                  // We only care about when wifi is disabled, and when there is a wifi network
602                  // change.
603                  if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) {
604                      int state = intent.getIntExtra(
605                              WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_DISABLED);
606                      if (state == WifiManager.WIFI_STATE_DISABLED) {
607                          Slog.i(TAG, "Wifi disabled. Disabling adbwifi.");
608                          Settings.Global.putInt(mContentResolver,
609                                  Settings.Global.ADB_WIFI_ENABLED, 0);

2.adb service会监听Settings.Global.ADB_WIFI_ENABLED变化，如果发生变化会调用setAdbEnabled来kill掉adbd

196      private class AdbSettingsObserver extends ContentObserver {
198          private final Uri mAdbWifiUri = Settings.Global.getUriFor(Settings.Global.ADB_WIFI_ENABLED);

204          @Override
205          public void onChange(boolean selfChange, @NonNull Uri uri, @UserIdInt int userId) {
206              if (mAdbUsbUri.equals(uri)) {
                 ...
212              } else if (mAdbWifiUri.equals(uri)) {
213                  boolean shouldEnable = (Settings.Global.getInt(mContentResolver,
214                          Settings.Global.ADB_WIFI_ENABLED, 0) > 0);
215                  FgThread.getHandler().sendMessage(obtainMessage(
216                          AdbService::setAdbEnabled, AdbService.this, shouldEnable,
217                              AdbTransportType.WIFI));
218              }
219          }
220      }

3.setAdbEnabled最终通过ctl_stop init命令来kill掉adbd进程；

442      private void stopAdbd() {
443          if (!mIsAdbUsbEnabled && !mIsAdbWifiEnabled) {
444              SystemProperties.set(CTL_STOP, ADBD);
445          }
446      }

■ 下一步
通过adb wifi跑monkey之前：
1. 在开发者选中关闭WirelessDebugging开关，再跑；
2. settings加入黑名单；

客户回复：后续出现该问题再重新提报问题，此票关闭