Android 邻近连接错误修复和多个连接

我正在写一个最多6人的多人游戏。我实现了重新连接的代码——换句话说，如果有人与所有其他玩家连接，并且他已断开连接，然后尝试重新连接。我阅读了关于NearyConnections 2.0的所有内容，但仍然存在一些问题，我相信它与设备（带有Android 6.0的LG Nexus 5）和NearyConnections API/Bluetooth连接。 有时，重新连接无法完成。以下是一些包含附近word的日志：

    07-31 16:30:33.053 23437-24092/? E/BluetoothAdapter: BT is in BLE_ON State
07-31 16:30:33.053 2135-2150/? D/BluetoothAdapterState: Current state: BLE ON, message: 1
07-31 16:30:33.053 2135-2150/? D/BluetoothAdapterProperties: Setting state to 11
07-31 16:30:33.053 2135-2150/? I/BluetoothAdapterState: Bluetooth adapter state changed: 15-> 11
07-31 16:30:33.055 2135-2135/? D/BluetoothAdapterService: getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@912c26c
07-31 16:30:33.057 2135-2135/? D/HeadsetService: Received start request. Starting profile...
07-31 16:30:33.057 2135-2135/? D/HeadsetStateMachine: make
07-31 16:30:33.065 784-802/? I/ActivityManager: Start proc 626:com.android.settings/1000 for broadcast com.android.settings/.bluetooth.DockEventReceiver
07-31 16:30:33.067 2135-2135/? D/HeadsetStateMachine: max_hf_connections = 1
07-31 16:30:33.067 2135-2135/? I/bt_bluedroid: get_profile_interface handsfree
07-31 16:30:33.068 2135-2154/? I/bt_btif_storage: btif_storage_get_adapter_property service_mask:0x20000040
07-31 16:30:33.068 2135-2154/? E/bt_btif: btif_hf_upstreams_evt: Invalid index -1
07-31 16:30:33.078 2135-2135/? D/BluetoothAdapterService: getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@912c26c
07-31 16:30:33.078 2135-2135/? D/A2dpService: Received start request. Starting profile...
07-31 16:30:33.078 2135-2135/? I/bt_bluedroid: get_profile_interface avrcp
07-31 16:30:33.080 2135-2150/? I/BluetoothAdapterState: Entering PendingCommandState
07-31 16:30:33.090 2135-2135/? E/RemoteController: Cannot set synchronization mode on an unregistered RemoteController
07-31 16:30:33.090 2135-2135/? D/A2dpStateMachine: make
07-31 16:30:33.109 2135-2135/? I/bt_bluedroid: get_profile_interface a2dp
07-31 16:30:33.110 2135-2154/? I/bt_btif_storage: btif_storage_get_adapter_property service_mask:0x20000048
07-31 16:30:33.110 2135-2135/? D/BluetoothAdapterService: getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@912c26c
07-31 16:30:33.111 2135-2135/? D/HidService: Received start request. Starting profile...
07-31 16:30:33.111 2135-2135/? I/bt_bluedroid: get_profile_interface hidhost
07-31 16:30:33.111 2135-2135/? D/HidService: setHidService(): set to: null
07-31 16:30:33.111 2135-2154/? I/bt_bta_hh: BTA_HhEnable sec_mask:0x36 p_cback:0xb39102ad
07-31 16:30:33.111 2135-2135/? D/BluetoothAdapterService: getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@912c26c
07-31 16:30:33.111 2135-2154/? I/bt_btif_storage: btif_storage_get_adapter_property service_mask:0x20100048
07-31 16:30:33.111 2135-625/? D/HeadsetPhoneState: sendDeviceStateChanged. mService=0 mSignal=0 mRoam=0 mBatteryCharge=3
07-31 16:30:33.111 2135-2135/? D/HealthService: Received start request. Starting profile...
07-31 16:30:33.112 2135-641/? D/A2dpStateMachine: Enter Disconnected: -2
07-31 16:30:33.117 545-545/com.project.testconnections W/art: Before Android 4.1, method int android.support.v7.widget.DropDownListView.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView
07-31 16:30:33.121 2135-2135/? I/bt_bluedroid: get_profile_interface health
07-31 16:30:33.122 2135-2135/? V/BluetoothAdapterState: isTurningOff()=false
07-31 16:30:33.122 2135-2135/? V/BluetoothAdapterState: isTurningOn()=true
07-31 16:30:33.122 2135-2135/? V/BluetoothAdapterState: isBleTurningOn()=false
07-31 16:30:33.122 2135-2135/? V/BluetoothAdapterState: isBleTurningOff()=false
07-31 16:30:33.123 2135-2135/? D/BluetoothAdapterService: getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@912c26c
07-31 16:30:33.123 2135-2135/? D/PanService: Received start request. Starting profile...
07-31 16:30:33.123 2135-2135/? D/BluetoothPanServiceJni: initializeNative(L110): pan
07-31 16:30:33.123 2135-2135/? I/bt_bluedroid: get_profile_interface pan
07-31 16:30:33.124 2135-2135/? D/BluetoothAdapterService: getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@912c26c
07-31 16:30:33.124 2135-2135/? D/BluetoothMapService: Received start request. Starting profile...
07-31 16:30:33.124 2135-2135/? D/BluetoothMapService: start()
07-31 16:30:33.125 2135-2154/? D/BluetoothPanServiceJni: control_state_callback(L61): state:0, local_role:3, ifname:bt-pan
07-31 16:30:33.126 2135-2135/? D/BluetoothMapAccountLoader: Found 0 application(s) with intent android.bluetooth.action.BLUETOOTH_MAP_PROVIDER
07-31 16:30:33.126 2135-2135/? D/BluetoothMapAccountLoader: Found 0 application(s) with intent android.bluetooth.action.BLUETOOTH_MAP_IM_PROVIDER
07-31 16:30:33.126 2135-2135/? D/BluetoothMapAppObserver: createReceiver()
07-31 16:30:33.127 2135-2135/? D/BluetoothMapAppObserver: initObservers()
07-31 16:30:33.127 2135-2135/? D/BluetoothMapAppObserver: getEnabledAccountItems()
07-31 16:30:33.128 2135-2135/? V/BluetoothAdapterState: isTurningOff()=false
07-31 16:30:33.128 2135-2135/? V/BluetoothAdapterState: isTurningOn()=true
07-31 16:30:33.128 2135-2135/? V/BluetoothAdapterState: isBleTurningOn()=false
07-31 16:30:33.128 2135-2135/? V/BluetoothAdapterState: isBleTurningOff()=false
07-31 16:30:33.128 2135-2135/? V/BluetoothAdapterState: isTurningOff()=false
07-31 16:30:33.128 2135-2135/? V/BluetoothAdapterState: isTurningOn()=true
07-31 16:30:33.128 2135-2135/? V/BluetoothAdapterState: isBleTurningOn()=false
07-31 16:30:33.128 2135-2135/? V/BluetoothAdapterState: isBleTurningOff()=false
07-31 16:30:33.128 2135-2135/? V/BluetoothAdapterState: isTurningOff()=false
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isTurningOn()=true
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isBleTurningOn()=false
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isBleTurningOff()=false
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isTurningOff()=false
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isTurningOn()=true
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isBleTurningOn()=false
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isBleTurningOff()=false
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isTurningOff()=false
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isTurningOn()=true
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isBleTurningOn()=false
07-31 16:30:33.129 2135-2135/? V/BluetoothAdapterState: isBleTurningOff()=false
07-31 16:30:33.130 2135-2150/? D/BluetoothAdapterState: Current state: PENDING_COMMAND, message: 2
07-31 16:30:33.130 2135-2150/? D/BluetoothAdapterProperties: ScanMode =  20
07-31 16:30:33.130 2135-2150/? D/BluetoothAdapterProperties: State =  11
07-31 16:30:33.130 2135-2150/? D/BluetoothAdapterProperties: Setting state to 12
07-31 16:30:33.130 2135-2150/? I/BluetoothAdapterState: Bluetooth adapter state changed: 11-> 12
07-31 16:30:33.131 1721-1870/? D/BluetoothHeadset: onBluetoothStateChange: up=true
07-31 16:30:33.131 2135-2150/? I/BluetoothAdapterState: Entering OnState
07-31 16:30:33.132 923-935/? D/BluetoothInputDevice: onBluetoothStateChange: up=true
07-31 16:30:33.135 784-806/? D/BluetoothHeadset: onBluetoothStateChange: up=true
07-31 16:30:33.135 923-1345/? D/BluetoothMap: onBluetoothStateChange: up=true
07-31 16:30:33.137 923-923/? D/BluetoothInputDevice: Proxy object connected
07-31 16:30:33.137 2135-2154/? D/BluetoothAdapterProperties: Scan Mode:21
07-31 16:30:33.137 923-923/? D/HidProfile: Bluetooth service connected
07-31 16:30:33.138 2135-2154/? D/BluetoothAdapterProperties: Discoverable Timeout:120
07-31 16:30:33.138 923-947/? D/BluetoothPbap: onBluetoothStateChange: up=true
07-31 16:30:33.140 923-923/? D/BluetoothMap: Proxy object connected
07-31 16:30:33.140 923-923/? D/MapProfile: Bluetooth service connected
07-31 16:30:33.140 923-923/? D/BluetoothMap: getConnectedDevices()
07-31 16:30:33.140 923-6809/? D/BluetoothA2dp: onBluetoothStateChange: up=true
07-31 16:30:33.142 923-923/? D/BluetoothA2dp: Proxy object connected
07-31 16:30:33.142 784-806/? D/BluetoothHeadset: onBluetoothStateChange: up=true
07-31 16:30:33.142 784-806/? D/BluetoothHeadset: onBluetoothStateChange: up=true
07-31 16:30:33.142 784-806/? D/BluetoothA2dp: onBluetoothStateChange: up=true
07-31 16:30:33.143 784-784/? D/BluetoothA2dp: Proxy object connected
07-31 16:30:33.143 923-935/? D/BluetoothPan: onBluetoothStateChange on: true
07-31 16:30:33.146 923-947/? D/BluetoothHeadset: onBluetoothStateChange: up=true
07-31 16:30:33.149 784-784/? I/Telecom: BluetoothPhoneService: queryPhoneState
07-31 16:30:33.151 923-923/? D/BluetoothPan: BluetoothPAN Proxy object connected
07-31 16:30:33.151 923-923/? D/PanProfile: Bluetooth service connected
07-31 16:30:33.151 2135-2135/? D/BluetoothMapMasInstance10: Map Service startRfcommSocketListener
07-31 16:30:33.151 2135-2135/? D/ObexServerSockets: create(rfcomm = -2, l2capPsm = -2)
07-31 16:30:33.151 1349-1349/? I/BeaconBle: Resetting - new scanner available: true
07-31 16:30:33.153 2135-2135/? W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
07-31 16:30:33.154 1349-1349/? I/BeaconBle: ZERO_POWER is disabled.
07-31 16:30:33.154 1349-1349/? I/BeaconBle: 'L' hardware scan: scan stopped, no powered clients
07-31 16:30:33.155 1349-1349/? I/GCoreUlr: Caught bluetooth enabled event, re-enabling ULR BLE scanner
07-31 16:30:33.155 2135-2135/? W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
07-31 16:30:33.156 2135-2135/? D/ObexServerSockets: Succeed to create listening sockets 
07-31 16:30:33.156 2135-2135/? D/ObexServerSockets10: startAccept()
07-31 16:30:33.156 2135-2135/? D/ObexServerSockets10: prepareForNewConnect()
07-31 16:30:33.156 2135-2135/? D/BluetoothSdpJni: sdpCreateMapMasRecordNative:
07-31 16:30:33.157 2135-2135/? D/BluetoothSdpJni: SDP Create record success - handle: 10
07-31 16:30:33.157 2135-2135/? D/BluetoothMapService: onReceive
07-31 16:30:33.157 2135-2135/? D/BluetoothMapService: onReceive: android.bluetooth.adapter.action.STATE_CHANGED
07-31 16:30:33.157 2135-2135/? D/BluetoothMapService: STATE_ON
07-31 16:30:33.157 2135-687/? D/ObexServerSockets10: Accepting socket connection...
07-31 16:30:33.158 2135-688/? D/ObexServerSockets10: Accepting socket connection...
07-31 16:30:33.159 1349-1349/? I/BeaconBle: Resetting - new scanner available: true
07-31 16:30:33.163 1349-1349/? I/BeaconBle: ZERO_POWER is disabled.
07-31 16:30:33.163 1349-1349/? I/BeaconBle: 'L' hardware scan: scan stopped, no powered clients
07-31 16:30:33.177 2135-2135/? D/BluetoothMapMasInstance10: Map Service startRfcommSocketListener
07-31 16:30:33.177 2135-2135/? D/ObexServerSockets10: prepareForNewConnect()
07-31 16:30:33.169 3005-3005/? W/Binder_C: type=1400 audit(0.0:547): avc: denied { ioctl } for path="socket:[96740]" dev="sockfs" ino=96740 ioctlcmd=7704 scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=unix_stream_socket permissive=0
07-31 16:30:33.169 3005-3005/? W/Binder_C: type=1400 audit(0.0:548): avc: denied { ioctl } for path="socket:[96740]" dev="sockfs" ino=96740 ioctlcmd=7704 scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=unix_stream_socket permissive=0
07-31 16:30:33.182 626-626/? W/System: ClassLoader referenced unknown path: /system/priv-app/Settings/lib/arm
07-31 16:30:33.169 2052-2052/? W/Binder_7: type=1400 audit(0.0:549): avc: denied { ioctl } for path="socket:[96739]" dev="sockfs" ino=96739 ioctlcmd=7704 scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=unix_stream_socket permissive=0
07-31 16:30:33.169 2052-2052/? W/Binder_7: type=1400 audit(0.0:550): avc: denied { ioctl } for path="socket:[96739]" dev="sockfs" ino=96739 ioctlcmd=7704 scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=unix_stream_socket permissive=0
07-31 16:30:33.183 1678-1678/? I/GoogleInputMethod: onFinishInput() : Dummy InputConnection bound
07-31 16:30:33.183 1678-1678/? I/GoogleInputMethod: onStartInput() : Dummy InputConnection bound
07-31 16:30:33.186 784-807/? I/ActivityManager: Displayed com.project.testconnections/.MainActivity: +1s730ms
07-31 16:30:33.207 784-891/? D/WifiService: New client listening to asynchronous messages
07-31 16:30:33.229 626-626/? W/ContextImpl: Calling a method in the system process without a qualified user: android.app.ContextImpl.startService:1221 android.content.ContextWrapper.startService:581 android.content.ContextWrapper.startService:581 com.android.settings.bluetooth.DockEventReceiver.beginStartingService:134 com.android.settings.bluetooth.DockEventReceiver.onReceive:115 
07-31 16:30:33.229 1349-1349/? W/ChimeraUtils: Non Chimera context
07-31 16:30:33.238 923-923/? D/BluetoothPbap: Proxy object connected
07-31 16:30:33.238 923-923/? D/PbapServerProfile: Bluetooth service connected
07-31 16:30:33.239 784-806/? D/BluetoothManagerService: Added callback: android.bluetooth.IBluetoothManagerCallback$Stub$Proxy@5b0fa31:true
07-31 16:30:33.240 2135-694/? W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
07-31 16:30:33.253 626-626/? D/LocalBluetoothProfileManager: Adding local A2DP profile
07-31 16:30:33.257 626-626/? D/LocalBluetoothProfileManager: Adding local HEADSET profile
07-31 16:30:33.269 1349-1349/? W/Nearby: Bind call too late - someone already tried to get: interface biol [CONTEXT service_id=49 ]
07-31 16:30:33.292 626-626/? D/LocalBluetoothProfileManager: Adding local MAP profile
07-31 16:30:33.292 626-626/? D/BluetoothMap: Create BluetoothMap proxy object
07-31 16:30:33.297 626-626/? D/LocalBluetoothProfileManager: LocalBluetoothProfileManager construction complete
07-31 16:30:33.300 626-626/? D/DockEventReceiver: finishStartingService: stopping service
07-31 16:30:33.319 626-626/? D/BluetoothA2dp: Proxy object connected
07-31 16:30:33.323 626-626/? D/BluetoothInputDevice: Proxy object connected
07-31 16:30:33.323 626-626/? D/HidProfile: Bluetooth service connected
07-31 16:30:33.326 626-626/? D/BluetoothPan: BluetoothPAN Proxy object connected
07-31 16:30:33.327 626-626/? D/PanProfile: Bluetooth service connected
07-31 16:30:33.328 626-626/? D/BluetoothMap: Proxy object connected
07-31 16:30:33.328 626-626/? D/MapProfile: Bluetooth service connected
07-31 16:30:33.328 626-626/? D/BluetoothMap: getConnectedDevices()
07-31 16:30:33.328 2135-704/? W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
07-31 16:30:33.330 2135-704/? I/BtOppRfcommListener: Accept thread started.
07-31 16:30:33.330 2135-2180/? E/bt_btif: bta_jv_rfcomm_start_server, run out of sec_id
07-31 16:30:33.330 2135-2203/? E/bt_btif_sock_rfcomm: find_rfc_slot_by_id unable to find RFCOMM slot id: 60
07-31 16:30:33.330 2135-704/? E/BtOppRfcommListener: Error accept connection java.io.IOException: read failed, socket might closed or timeout, read ret: -1

我之所以显示此日志，是因为它是我认为是我问题原因的事情之前的开始-在我的日志中不停地循环此内容：

BtOppRfcommListener: Error accept connection java.io.IOException: read failed, socket might closed or timeout, read ret: -1

只有重新启动设备，我才能停止此循环。你知道如何通过反射或其他方式修复它吗

@Xlythe，你能告诉我如何解决我的问题吗（不重启手机，但通过编程）？这个问题的原因是两个玩家试图同时连接对方吗

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谢谢

< P>创建5个蓝牙套接字（因为你有6个玩家）在Android上的蓝牙堆栈的实现上非常不确定的边缘——如果你能可靠地支持4个蓝牙套接字，你应该认为自己非常幸运。p> 此外，同时相互连接不是问题，并且在附近的连接中得到支持——在两个设备之间的同时尝试结束时，只有2个连接中的1个保持建立（任意牺牲一个）

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最后，要从附近的连接获取更好的日志消息，请为NearbyConnections和NearbyMediums日志标记打开详细日志记录功能——目前，您的日志中只提到了一个单词Nearest，而它与附近的连接无关。

谢谢您的回答。我的测试是将一个设备连接到另一个设备，并且它在大部分时间都工作。有时我会重复此错误，然后无法连接断开连接的设备。我猜这与此有关：关于蓝牙连接设备的数量——我是否应该使用WiFi p2p而不是附近：你可以使用p2p_STAR，让其他人都连接到一个“主机”。在幕后，它使用wifip2p（以及其他一些技术）。它的局限性在于，你不能只与每个人联系——你需要决定主人是谁。其好处是Wifi可以处理比蓝牙更多的同时连接。它不是也用于P2P_星连接吗？在开始时连接更快，在建立Wifi连接后切换到Wifi？我在问，因为如果问题来自于播放器的数量，并且在这两种拓扑情况下都使用蓝牙，那么如果我没有像setBluetoothUse（false）这样的API功能，从集群切换到星型会有什么区别？或者这个答案是如何避免同时发生的连接冲突？如果脱机数据交换因蓝牙问题而无法工作，我的备份计划是Firestore。感谢您的所有回答！是的，我们的所有策略都从蓝牙开始，然后（可选）升级到更高带宽的技术。使用P2P_STAR（如果你的应用程序有一个单一主机的模式）的不太明显的好处是，它将从蓝牙开始，然后升级到WiFi，从而为主机上的蓝牙连接打开另一个插槽（除主机外，每个参与者只有一个到主机的连接，因此其上的蓝牙连接插槽没有问题）。STAR的缺点是您的手机将失去互联网连接。