esc_pos_bluetooth
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andrey-ushakov
Connection timeout issue when print continuously
Same here
D/BluetoothAdapter(11107): cancelDiscovery
D/BluetoothAdapter(11107): cancelDiscovery = true
D/BluetoothUtils(11107): isSocketAllowedBySecurityPolicy start : device null
W/BluetoothAdapter(11107): getBluetoothService() called with no BluetoothManagerCallback
D/BluetoothSocket(11107): connect(), SocketState: INIT, mPfd: {ParcelFileDescriptor: FileDescriptor[84]}
D/BluetoothBasicPlugin(11107): stateStreamHandler, current action: android.bluetooth.device.action.ACL_CONNECTED
E/DeviceConnFactoryManager(11107): wait read
D/BluetoothSocket(11107): close() in, this: android.bluetooth.BluetoothSocket@2ec8b13, channel: 1, state: CONNECTED
D/BluetoothSocket(11107): close() this: android.bluetooth.BluetoothSocket@2ec8b13, channel: 1, mSocketIS: android.net.LocalSocketImpl$SocketInputStream@34c93150, mSocketOS: android.net.LocalSocketImpl$SocketOutputStream@3a908f49mSocket: android.net.LocalSocket@16ab704e impl:android.net.LocalSocketImpl@d8ac56f fd:FileDescriptor[84]
D/BluetoothSocket(11107): Closing mSocket: android.net.LocalSocket@16ab704e impl:android.net.LocalSocketImpl@d8ac56f fd:FileDescriptor[84]
W/System.err(11107): java.io.IOException: bt socket closed, read return: -1
W/System.err(11107): at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:647)
W/System.err(11107): at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
W/System.err(11107): at java.io.InputStream.read(InputStream.java:162)
W/System.err(11107): at com.gprinter.io.BluetoothPort.readData(BluetoothPort.java:130)
W/System.err(11107): at com.tablemi.flutter_bluetooth_basic.DeviceConnFactoryManager.readDataImmediately(DeviceConnFactoryManager.java:418)
W/System.err(11107): at com.tablemi.flutter_bluetooth_basic.DeviceConnFactoryManager$PrinterReader.run(DeviceConnFactoryManager.java:498)
E/BluetoothPort(11107): connection device is lost
E/DeviceConnFactoryManager(11107): read 0
D/BluetoothSocket(11107): close() in, this: android.bluetooth.BluetoothSocket@2ec8b13, channel: 1, state: CLOSED
D/BluetoothSocket(11107): close() in, this: android.bluetooth.BluetoothSocket@2ec8b13, channel: 1, state: CLOSED
E/flutter (11107): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: Bad state: Future already completed
E/flutter (11107): #0 _AsyncCompleter.complete (dart:async/future_impl.dart:41:31)
E/flutter (11107): #1 PrinterBluetoothManager.writeBytes.
Have you tried to adjust the queueSleepTimeMs as explained here:
https://github.com/andrey-ushakov/esc_pos_bluetooth#troubleshooting
?
i have same issue too.. but when i tracked. the problem maybe in "writeBytes" function, the default step is..
- scan and connect to the device in here...
- after the device connected, it will print data...
- the problem maybe here... after print data, it will delay about 3sec. n disconnect the device...
if u want to print again, the step will restart again... so when the device on progress to disconnect, n new connection is coming, it will time out...
can u make the state. connect to device, disconnect to device, n status "isConnected" so we can access that ???
so if we can manage, to reconnect to device or want time connect until, we want to disconnect the device
