Read Failed

[anupamjuit]

simple_bluetooth_terminal D/BluetoothSocket: close() this: android.bluetooth.BluetoothSocket@f5058ae, channel: 1, mSocketIS: android.net.LocalSocketImpl$SocketInputStream@4cef64f, mSocketOS: android.net.LocalSocketImpl$SocketOutputStream@b4521dcmSocket: android.net.LocalSocket@8e8a2e5 impl:android.net.LocalSocketImpl@c2ea86b fd:java.io.FileDescriptor@4f07fc8, mSocketState: INIT

I am getting this error. And in the mobile window, I am getting: connecting....connection failed: read failed, socket might closed or timeout, read ret: -1

Help please

[kai-morich]

bluetooth communication sometimes fails with strange errors. No additional details are reported by Android libraries, so I also do not know the root cause. Typically it works when you try again, pair again, reboot devices, ...

[anupamjuit]

Thank you for your responce.

[anupamjuit]

Hi! I found something like this: When I try to connect with Developer Sample Bluetooth Cat Application it's only connecting with an insecure socket, and by changing the UUID for insecure one it works. look in this matter.

[kai-morich]

are you talking about bluetooth classic (this repo) or bluetooth LE (my SimpleBluetoothLETerminal repo)? UUID looks more like Bluetooth LE

[anupamjuit]

I am working with classici one. private static final UUID BLUETOOTH_SPP = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");

BlutoothSampleChatService using this: // Unique UUID for this application private static final UUID MY_UUID_SECURE = UUID.fromString("fa87c0d0-afac-11de-8a39-0800200c9a66"); private static final UUID MY_UUID_INSECURE = UUID.fromString("8ce255c0-200a-11e0-ac64-0800200c9a66");

try { if (secure) { tmp = mAdapter.listenUsingRfcommWithServiceRecord(NAME_SECURE, MY_UUID_SECURE); } else { tmp = mAdapter.listenUsingInsecureRfcommWithServiceRecord( NAME_INSECURE, MY_UUID_INSECURE); } }

In this sample (https://github.com/android/connectivity-samples/tree/master/BluetoothChat/#readme) I am able to connect. But only with Connect a device-Insecure mode.

[kai-morich]

this app uses the Bluetooth Serial Port Profile where createRfcommSocketToServiceRecord is the right method. As you are using different UUID you might also have to use different methods.