Tell what 00001101-0000-1000-8000-00805F9B34FB is

Fun that we have to reverse engineer and document magic numbers in our own
code. Code written less than a year ago.

Change-Id: I02b7697e7e02b85c8df78acda8f943c9b0628359

android/sdremote/src/org/libreoffice/impressremote/communication/BluetoothClient.java

@@ -42,6 +42,10 @@ public class BluetoothClient extends Client {
         BluetoothDevice aDevice = mAdapter
                         .getRemoteDevice(aServer.getAddress());
         mAdapter.cancelDiscovery();
+        // This is the "standard UUID for the Serial Port Profile".
+        // I.e. the 16-bit SerialPort UUID 0x1101 inserted into the
+        // Bluetooth BASE_UUID. See
+        // https://www.bluetooth.org/Technical/AssignedNumbers/service_discovery.htm
         mSocket = aDevice.createRfcommSocketToServiceRecord(UUID
                         .fromString("00001101-0000-1000-8000-00805F9B34FB"));
         mSocket.connect();
@@ -84,4 +88,4 @@ public class BluetoothClient extends Client {
     }
 
 }
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
\ No newline at end of file