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POConnection refused while attempting to connect Bluetooth device
 

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  1. POConnection refused while attempting to connect Bluetooth device
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    <p>I'm using BluetoothChat example(3.1) code sample to test communications between two Samsung Galaxy Tabs. I know this has been asked many times before, but I'm still confused that when I do this:</p> <pre><code>BluetoothSocket mmSocket ... mmSocket.connect(); </code></pre> <p>This produces a connection refused. I've tried many times to pair and unpair outside and inside the program without any results. Does anyone have any ideas?</p> <p><strong>Update (Added from Answer):</strong></p> <p>The code in both client &amp; server is the same. These are actually two Samsung Galaxy Tabs (3.1). The error occurs while trying to connect to remote device.</p> <pre><code> public ConnectThread(BluetoothDevice device, boolean secure) { mmDevice = device; BluetoothSocket tmp = null; mSocketType = secure ? "Secure" : "Insecure"; // Get a BluetoothSocket for a connection with the // given BluetoothDevice try { if (secure) { //tmp = device.createRfcommSocketToServiceRecord( //MY_UUID_SECURE); // tmp = device.createRfcommSocketToServiceRecord( // UUID.fromString("00001101-0000-1000-8000-00805F9B34FB")); Method m = device.getClass().getMethod("createRfcommSocket", new Class[] {int.class}); tmp = (BluetoothSocket) m.invoke(device, 1); } else { Method m = device.getClass().getMethod("createInsecureRfcommSocketToServiceRecord", new Class[] {int.class}); tmp = (BluetoothSocket)m.invoke(device, UUID.fromString("00001101-0000-1000-8000-00805F9B34FB")); } } catch (Exception e) { Log.e(TAG, "Socket Type: " + mSocketType + "create() failed", e); } mmSocket = tmp; } public void run() { Log.i(TAG, "BEGIN mConnectThread SocketType:" + mSocketType); setName("ConnectThread" + mSocketType); // Always cancel discovery because it will slow down a connection mAdapter.cancelDiscovery(); // Make a connection to the BluetoothSocket try { // This is a blocking call and will only return on a // successful connection or an exception mmSocket.connect(); } catch (IOException e) { // Close the socket try { Log.e("Ali", "Error interacting with remote device. Here is the cause: "+ e.getMessage() ); mmSocket.close(); } catch (IOException e2) { Log.e(TAG, "unable to close() " + mSocketType + " socket during connection failure", e2); } connectionFailed(); return; } // Reset the ConnectThread because we're done synchronized (BluetoothChatService.this) { mConnectThread = null; } // Start the connected thread connected(mmSocket, mmDevice, mSocketType); } </code></pre> <p>The listening part is as follows:</p> <pre><code> private class AcceptThread extends Thread { // The local server socket private final BluetoothServerSocket mmServerSocket; private String mSocketType; public AcceptThread(boolean secure) { BluetoothServerSocket tmp = null; mSocketType = secure ? "Secure":"Insecure"; // Create a new listening server socket try { if (secure) { tmp = mAdapter.listenUsingRfcommWithServiceRecord(NAME_SECURE,UUID.fromString("00001101-0000-1000-8000-00805F9B34FB")); } else { tmp = mAdapter.listenUsingInsecureRfcommWithServiceRecord( NAME_INSECURE, UUID.fromString("00001101-0000-1000-8000-00805F9B34FB")); } } catch (IOException e) { Log.e(TAG, "Socket Type: " + mSocketType + "listen() failed", e); } mmServerSocket = tmp; } public void run() { if (D) Log.d(TAG, "Socket Type: " + mSocketType + "BEGIN mAcceptThread" + this); setName("AcceptThread" + mSocketType); BluetoothSocket socket = null; // Listen to the server socket if we're not connected while (mState != STATE_CONNECTED) { try { // This is a blocking call and will only return on a // successful connection or an exception socket = mmServerSocket.accept(); } catch (IOException e) { Log.e("Ali", "Error while connecting to device because: "+ e.getStackTrace()); break; } // If a connection was accepted if (socket != null) { synchronized (BluetoothChatService.this) { switch (mState) { case STATE_LISTEN: case STATE_CONNECTING: // Situation normal. Start the connected thread. connected(socket, socket.getRemoteDevice(), mSocketType); break; case STATE_NONE: case STATE_CONNECTED: // Either not ready or already connected. Terminate new socket. try { socket.close(); } catch (IOException e) { Log.e(TAG, "Could not close unwanted socket", e); } break; } } } } if (D) Log.i(TAG, "END mAcceptThread, socket Type: " + mSocketType); } </code></pre> <p>Finally here you have the logcat:</p> <blockquote> <p></p> </blockquote> <ul> <li>01-05 10:34:07.749: E/BluetoothChat(22495): +++ ON CREATE +++ 01-05</li> <li>10:34:07.779: E/BluetoothChat(22495): ++ ON START ++ 01-05</li> <li>10:37:41.109: E/BluetoothChat(22599): ++ ON START ++ 01-05</li> <li>10:37:50.009: D/BluetoothChat(22599): onActivityResult -1 01-05</li> <li>10:37:50.009: D/BluetoothChatService(22599): connect to:</li> <li>60:D0:A9:85:AE:6A 01-05 10:37:50.009: D/BluetoothChatService(22599):</li> <li>setState() 1 -> 2 01-05 10:37:50.009: E/BluetoothChat(22599): + ON</li> <li>RESUME + 01-05 10:37:50.029: I/BluetoothChatService(22599): BEGIN</li> <li>mConnectThread SocketType:Secure 01-05 10:37:50.029:</li> <li>I/BluetoothChat(22599): MESSAGE_STATE_CHANGE: 2 01-05 10:37:55.169:</li> <li>E/Ali(22599): Error interacting with remote device. Here is the cause: Host is down 01-05 10:37:55.169:</li> <li>D/BluetoothChatService(22599): start 01-05 10:37:55.169:</li> <li>D/BluetoothChatService(22599): setState() 2 -> 1 01-05 10:37:55.189:</li> <li>I/BluetoothChat(22599): MESSAGE_STATE_CHANGE: 1 01-05 10:37:55.219:</li> <li>D/dalvikvm(22599): GC_CONCURRENT freed 171K, 4% free 6522K/6791K,paused 2ms+3ms 01-05 10:38:02.749:</li> <li>W/PhoneWindow(22599): Couldn't get audio manager 01-05 10:38:04.969:</li> <li>E/BluetoothChat(22599): - ON PAUSE - 01-05 10:38:04.989:</li> <li>I/ApplicationPackageManager(22599): cscCountry is not German : TPH 01-05 10:38:07.059:</li> <li>D/DeviceListActivity(22599): doDiscovery() 01-05 10:38:10.609:</li> <li>D/BluetoothChat(22599):onActivityResult -1 01-05 10:38:10.609:</li> <li>D/BluetoothChatService(22599): connect to: F0:08:F1:5E:51:67 01-05 10:38:10.609:</li> <li>D/BluetoothChatService(22599): setState() 1 -> 2 01-05 10:38:10.609:</li> <li>E/BluetoothChat(22599): + ON RESUME + 01-05 10:38:10.609:</li> <li>I/BluetoothChatService(22599): BEGIN mConnectThread SocketType:Secure 01-05 10:38:10.629:</li> <li>I/BluetoothChat(22599): MESSAGE_STATE_CHANGE: 2 01-05 10:38:12.089:</li> <li>E/BluetoothChat(22599): - ON PAUSE - 01-05 10:38:12.329:</li> <li>D/CLIPBOARD(22599): Hide Clipboard dialog at Starting input: finished by someone else... ! 01-05 10:38:12.339:</li> <li>W/IInputConnectionWrapper(22599): showStatusIcon on inactive InputConnection 01-05 10:38:19.589:</li> <li>E/BluetoothChat(22599):+ ON RESUME + 01-05 10:38:20.799:</li> <li><em><strong>E/Ali(22599): Error interacting with remote device. Here is the cause: Connection refused 01-05 10:38:20.799:</em></strong></li> <li>D/BluetoothChatService(22599): start 01-05 10:38:20.799:</li> <li>D/BluetoothChatService(22599): setState() 2 -> 1 01-05 10:38:20.799:</li> <li>I/BluetoothChat(22599): MESSAGE_STATE_CHANGE: 1 01-05 10:39:23.489: </li> <li>E/BluetoothChat(22599): - ON PAUSE -</li> </ul>
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    1. USdon ali
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    1. COPls post the relevant code - server and client side. Also logs with the error ..
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      1. USDennis Mathews
 

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