我的堆栈跟踪中出现了以下信息。我可以找到蓝牙设备，但当我尝试打开套接字时发生了这种情况。
10-30 22:23:08.901: ERROR/BTL_CFG(8633): WARNING : [service.brcm.bt.INQ_FILTER_BDA] property_get failed (0)
10-30 22:23:24.585: ERROR/BTLD(8633): ****************search UUID = 1454***********
10-30 22:23:24.600: ERROR/BluetoothEventLoop.cpp(2502): onCreateDeviceResult: D-Bus error: org.bluez.Error.AlreadyExists (Device already exists)
10-30 22:23:24.616: ERROR/DTUN_HCID4(8659): No device pointer found for peer! Ignore Error = true. Ignoring error...
10-30 22:23:26.093: ERROR/DTUN_HCID4(8659): discovery unsuccessful!
10-30 22:23:30.628: ERROR/CachedBluetoothDevice(18609): onUuidChanged: Time since last connect 1440232. mInitiatedPairing: false
10-30 22:23:30.632: ERROR/CachedBluetoothDevice(18609): onUuidChanged: Time since last connect1440236.mInitiatedPairing:false
编辑：
套接字尝试打开但未成功，抛出一个异常 (服务发现失败)，然后套接字将被正确关闭。