BluetoothSocket.connect() throwing exception “read failed”

Question

I have a project that connects to a device over Bluetooth. It used to work fairly reliably, but now it fails the BluetoothSocket.connect() call every time. (W

Answer 1

In my case it was due to bad UUID in createRfcommSocketToServiceRecord() function. I want to connect to SPP serial profile in raspberry pi 3 and I used this UUID:

private static final UUID MY_UUID_SECURE =
            UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");

I found somewhere in android documents' page for SPP.