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POCheck that the SPP UUID 00001101-0000-1000-8000-00805F9B34FB exists on server
 

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  1. POCheck that the SPP UUID 00001101-0000-1000-8000-00805F9B34FB exists on server
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    <p>I'm using Windows 7 PC as Server. Code: </p> <pre><code>public class PCSPPServer { //start server private void startServer() throws IOException{ //Create a UUID for SPP UUID uuid = new UUID("1101", true); //Create the servicve url String connectionString = "btspp://localhost:" + uuid +";name=Sample SPP Server"; //open server url StreamConnectionNotifier streamConnNotifier = (StreamConnectionNotifier)Connector.open( connectionString ); //Wait for client connection System.out.println("\nServer Started. Waiting for clients to connect..."); StreamConnection connection=streamConnNotifier.acceptAndOpen(); RemoteDevice dev = RemoteDevice.getRemoteDevice(connection); System.out.println("Remote device address: "+dev.getBluetoothAddress()); System.out.println("Remote device name: "+dev.getFriendlyName(true)); //read string from spp client InputStream inStream=connection.openInputStream(); BufferedReader bReader=new BufferedReader(new InputStreamReader(inStream)); String lineRead=bReader.readLine(); System.out.println(lineRead); //send response to spp client OutputStream outStream=connection.openOutputStream(); PrintWriter pWriter=new PrintWriter(new OutputStreamWriter(outStream)); pWriter.write("Response String from SPP Server\r\n"); pWriter.flush(); pWriter.close(); streamConnNotifier.close(); } public static void main(String[] args) throws IOException { //display local device address and name LocalDevice localDevice = LocalDevice.getLocalDevice(); System.out.println("Address: "+localDevice.getBluetoothAddress()); System.out.println("Name: "+localDevice.getFriendlyName()); PCSPPServer sampleSPPServer=new PCSPPServer(); sampleSPPServer.startServer(); } } </code></pre> <p>And HTC Desire as Client. Code:</p> <pre><code>public class MainActivity extends Activity { TextView out; private static final int REQUEST_ENABLE_BT = 1; private BluetoothAdapter btAdapter = null; private BluetoothSocket btSocket = null; private OutputStream outStream = null; // Well known SPP UUID private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); // Insert your server's MAC address private static String address = "00:15:83:0C:BF:EB"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); out = (TextView) findViewById(R.id.out); out.append("\n...In onCreate()..."); btAdapter = BluetoothAdapter.getDefaultAdapter(); CheckBTState(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main, menu); return true; } @Override public void onStart() { super.onStart(); out.append("\n...In onStart()..."); } @Override public void onResume() { super.onResume(); out.append("\n...In onResume...\n...Attempting client connect..."); // Set up a pointer to the remote node using it's address. BluetoothDevice device = btAdapter.getRemoteDevice(address); // Two things are needed to make a connection: // A MAC address, which we got above. // A Service ID or UUID. In this case we are using the // UUID for SPP. try { btSocket = device.createRfcommSocketToServiceRecord(MY_UUID); } catch (IOException e) { AlertBox("Fatal Error", "In onResume() and socket create failed: " + e.getMessage() + "."); } // Discovery is resource intensive. Make sure it isn't going on // when you attempt to connect and pass your message. btAdapter.cancelDiscovery(); // Establish the connection. This will block until it connects. try { btSocket.connect(); out.append("\n...Connection established and data link opened..."); } catch (IOException e) { try { btSocket.close(); } catch (IOException e2) { AlertBox("Fatal Error", "In onResume() and unable to close socket during connection failure" + e2.getMessage() + "."); } } // Create a data stream so we can talk to server. out.append("\n...Sending message to server..."); try { outStream = btSocket.getOutputStream(); } catch (IOException e) { AlertBox("Fatal Error", "In onResume() and output stream creation failed:" + e.getMessage() + "."); } String message = "Hello from Android.\n"; byte[] msgBuffer = message.getBytes(); try { outStream.write(msgBuffer); } catch (IOException e) { String msg = "In onResume() and an exception occurred during write: " + e.getMessage(); if (address.equals("00:00:00:00:00:00")) msg = msg + ".\n\nUpdate your server address from 00:00:00:00:00:00 to the correct address on line 37 in the java code"; msg = msg + ".\n\nCheck that the SPP UUID: " + MY_UUID.toString() + " exists on server.\n\n"; AlertBox("Fatal Error", msg); } } @Override public void onPause() { super.onPause(); out.append("\n...In onPause()..."); if (outStream != null) { try { outStream.flush(); } catch (IOException e) { AlertBox("Fatal Error", "In onPause() and failed to flush output stream: " + e.getMessage() + "."); } } try { btSocket.close(); } catch (IOException e2) { AlertBox("Fatal Error", "In onPause() and failed to close socket." + e2.getMessage() + "."); } } @Override public void onStop() { super.onStop(); out.append("\n...In onStop()..."); } @Override public void onDestroy() { super.onDestroy(); out.append("\n...In onDestroy()..."); } private void CheckBTState() { // Check for Bluetooth support and then check to make sure it is turned on // Emulator doesn't support Bluetooth and will return null if(btAdapter==null) { AlertBox("Fatal Error", "Bluetooth Not supported. Aborting."); } else { if (btAdapter.isEnabled()) { out.append("\n...Bluetooth is enabled..."); } else { //Prompt user to turn on Bluetooth Intent enableBtIntent = new Intent(btAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT); } } } public void AlertBox( String title, String message ){ new AlertDialog.Builder(this) .setTitle( title ) .setMessage( message + " Press OK to exit." ) .setPositiveButton("OK", new OnClickListener() { public void onClick(DialogInterface arg0, int arg1) { finish(); } }).show(); } } </code></pre> <p>I've tried it's on both <strong>Windows 7</strong> <strong>32bit</strong> &amp; <strong>64bit</strong>. I'm using HTC Desire <strong>Android v2.3.3</strong>.</p> <p>When I try connecting the client to the server and try to write any text using <code>OutputStream</code>, i get the error: </p> <blockquote> <p>Check that the SPP UUID 00001101-0000-1000-8000-00805F9B34FB exists on server</p> </blockquote> <hr> <p>Also I add a new Bluetooth device on my PC.</p> <p>Bluetooth Device Info:</p> <blockquote> <p>Manufacturer: Cambridge Silicon Radio Ltd Driver Provider: Microsoft</p> </blockquote> <p>See some information in this image: <img src="https://i.stack.imgur.com/EF3Xo.png" alt="enter image description here"></p> <p>Let me know if anyone has an idea !</p>
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