Bluetooth Connection failed "java.io.IOException: read failed, socket might closed or timeout, read ret: -1"
In the constructor of BluetoothConnector.java, a list of uuidCandidates is passed.
public BluetoothConnector(BluetoothDevice device, boolean secure, BluetoothAdapter adapter,
List<UUID> uuidCandidates)
{
this.device = device;
this.secure = secure;
this.adapter = adapter;
this.uuidCandidates = uuidCandidates;
if (this.uuidCandidates == null || this.uuidCandidates.isEmpty()) {
this.uuidCandidates = new ArrayList<UUID>();
this.uuidCandidates.add(UUID.fromString("fa87c0d0-afac-11de-8a39-0800200c9a66"));
}
}
Have you passed it null?
If yes,then try calling device.fetchUuidsWithSdp()
for the Bluetooth device you want to connect and receive BluetoothDevice.ACTION_UUID
intent in your receiver.As this will fetch a list of uuids supported for the device.
Comments
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Java_begins about 4 years
I am trying to connect devices through my app installed in Nexus 5.I want to make an app like rainbow contacts in android. In my app I aim to connect to another device through Bluetooth and transfer set of contacts or files. I followed this question, but the workaround mentioned there is not working for me Here is my full code. This is the code snippet from my application where I have tried to get the socket and make connections.
I am able to get through pairing device dialog ,but when i trying to paired then error is raised
//to create socket if (secure) { bluetoothSocket = device.createRfcommSocketToServiceRecord(uuid); } else { bluetoothSocket = device.createInsecureRfcommSocketToServiceRecord(uuid); } //connection establishment try { bluetoothSocket.connect(); success = true; break; } catch (IOException e) { //try the fallback try { Class<?> clazz = tmp.getRemoteDevice().getClass(); Class<?>[] paramTypes = new Class<?>[] {Integer.TYPE}; Method m = clazz.getMethod("createRfcommSocket", paramTypes); Object[] params = new Object[] {Integer.valueOf(1)}; bluetoothSocket = (BluetoothSocket) m.invoke(tmp.getRemoteDevice(), params); Thread.sleep(500); bluetoothSocket.connect(); success = true; break; } catch (FallbackException e1) { Log.w("BT", "Could not initialize FallbackBluetoothSocket classes.", e); } catch (InterruptedException e1) { Log.w("BT", e1.getMessage(), e1); } catch (IOException e1) { Log.w("BT", "Fallback failed. Cancelling.", e1); } }
Error I am getting
09-06 13:44:57.247 27860-27860/com.example.gauravdubey.myapplication I/BT﹕ Attempting to connect to Protocol: 00001101-0000-1000-8000-00805f9b34fb 09-06 13:44:57.247 27860-27860/com.example.gauravdubey.myapplication W/BluetoothAdapter﹕ getBluetoothService() called with no BluetoothManagerCallback 09-06 13:44:57.247 27860-27860/com.example.gauravdubey.myapplication D/BluetoothSocket﹕ connect(), SocketState: INIT, mPfd: {ParcelFileDescriptor: FileDescriptor[56]} 09-06 13:44:58.667 27860-27860/com.example.gauravdubey.myapplication W/BluetoothAdapter﹕ getBluetoothService() called with no BluetoothManagerCallback 09-06 13:44:58.667 27860-27860/com.example.gauravdubey.myapplication D/BluetoothSocket﹕ connect(), SocketState: INIT, mPfd: {ParcelFileDescriptor: FileDescriptor[59]} 09-06 13:45:03.267 27860-27860/com.example.gauravdubey.myapplication W/BT﹕ Fallback failed. Cancelling. java.io.IOException: read failed, socket might closed or timeout, read ret: -1 at android.bluetooth.BluetoothSocket.readAll(BluetoothSocket.java:505) at android.bluetooth.BluetoothSocket.waitSocketSignal(BluetoothSocket.java:482) at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:324) at com.example.gauravdubey.myapplication.BluetoothConnector$FallbackBluetoothSocket.connect(BluetoothConnector.java:198) at com.example.gauravdubey.myapplication.BluetoothConnector.connect(BluetoothConnector.java:62) at com.example.gauravdubey.myapplication.ConnectThread.run(ConnectThread.java:101) at com.example.gauravdubey.myapplication.MainActivity$1.onItemClick(MainActivity.java:288) at android.widget.AdapterView.performItemClick(AdapterView.java:299) at android.widget.AbsListView.performItemClick(AbsListView.java:1113) at android.widget.AbsListView$PerformClick.run(AbsListView.java:2911) at android.widget.AbsListView$3.run(AbsListView.java:3645) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5001) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601) at dalvik.system.NativeStart.main(Native Method) 09-06 13:45:03.267 27860-27860/com.example.gauravdubey.myapplication V/connectThread﹕ Could not connect to device: B0:D0:9C:8B:A4:47 09-06 13:45:03.267 27860-27860/com.example.gauravdubey.myapplication I/Choreographer﹕ Skipped 361 frames! The application may be doing too much work on its main thread.
So what i am doing wrong ? any help would be appreciated
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user207421 over 9 years"java.io.IOException: read failed, socket might closed or timeout, read ret: -1" Is that illiterate and incorrect error message really what was printed? Hard to believe, and it needs attention if true.
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Java_begins over 9 years@EJP Yes the error message was same I tried everything possible. If you want I Can give you complete logs.
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Java_begins over 9 years@EJP Here is Complete error log. I am able to get pair screen but whenever i am trying to pair devices it shows me error.
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user207421 over 9 yearsA note to the Android developers: "read failed, socket might closed or timeout" is a truly terrible error message. (1) It's illiterate if quoted here accurately (2) a timeout is completely different from a peer close is completely different from a local close: they should not be conflated (3) a timeout should be reported by
SocketTimeoutException
(4) a local close should be reported bySocketException: socket is closed
(5) a peer close should be reported byread()
returning -1 etc. -
ThomasW about 9 yearsI wrote up the grammar error here: code.google.com/p/android/issues/detail?id=159898
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ThomasW about 9 yearsThe source file that the message appears in is line 512 of android.googlesource.com/platform/frameworks/base/+/master/core/…
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Java_begins over 9 yearsI tired you code withing the try block and also trying with another UUID . Doesn't help
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kalup over 9 yearsHave you tried 3rd method? I would use it within MainActivity.onItemClick, befor launching ConnectThread. Moreover, try BluetoothChatExample on those devices and look if it works
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Java_begins over 9 years@Gaurav_Dubey Thanks it works for now , I am able to make connection
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Paride Letizia over 9 yearsHi, I have same error but I don't understand how to use your code. If I pass null value on uuidCandidates, what I have to do later? Could you write a complete example? Thanks in advance