I'll need to see some HCI or LMP logs to see why the connection gets dropped.
Nick On Tue, Nov 24, 2009 at 4:32 PM, Sean Liao <[email protected]> wrote: > The test driver doesn't get blocked: numOfAvailable is always zero. I bet > if I remove the instream.available() check. I would get the same exception > as the one writing to output stream. > > Pluggin a debugger onto the remote device, I found the connection > immediately gets disconnected by my android test driver regardless read or > write from the subsequent calls. > > ... one custom feature on the remote device: after connecton being made, > it would request a role switch. On other phones, if the local device/phone > doesn't support role switch, the connection simply remains without role > switching. Just wondering why the connection gets connected but immediately > dropped ... > > > > > > > > > > > On Tue, Nov 24, 2009 at 4:18 PM, Nick Pelly <[email protected]> wrote: > >> At first glance, the problem is probably that instream.read() will block >> until it has 512 bytes. Are you sending enough bytes? >> >> If you did not intend to send 512 bytes (i cant tell without your server >> code), you should use pass numOfAvailable into instream.read(), and it >> should return straight away. >> >> Nick >> >> >> >> On Tue, Nov 24, 2009 at 1:22 PM, Sean Liao <[email protected]>wrote: >> >>> got another error from writing. wondering if this might be related. >>> >>> 11-24 13:07:27.731: ERROR/BluetoothEventLoop.cpp(1015): event_filter: >>> Received signal org.bluez.Device:PropertyChanged from >>> /org/bluez/1973/hci0/dev_00_08_1B_CA_C7_29 >>> 11-24 13:07:28.606: VERBOSE/BluetoothEventRedirector(1138): Received >>> android.bleutooth.device.action.UUID >>> 11-24 13:07:30.015: DEBUG/(2254): getOutputStream >>> 11-24 13:07:30.052: ERROR/(2254): bt write failed >>> *11-24 13:07:30.052: ERROR/(2254): java.io.IOException: Transport >>> endpoint is not connected* >>> >>> I connected an debugger into remote device, and found the Android/My test >>> driver initiated an disconnect immediately after connect. >>> >>> Really appreciate if you can point out what is wrong with my test driver. >>> >>> Sean >>> >>> >>> >>> >>> >>> On Tue, Nov 24, 2009 at 12:45 PM, Sean Liao <[email protected]>wrote: >>> >>>> Hi, I wrote a simple test driver to test the bluetooth apis. Anyone can >>>> verify whether I am using the API correctly? Everything seems good but no >>>> data read :-( >>>> >>>> >>>> >>>> >>>> =========================================================================== >>>> // before calling the following, inquiry scan successfully returned, and >>>> the remote device is pre-paired. >>>> >>>> private boolean doTestConnection() { >>>> >>>> Log.d("SwxBtCommImpl", "doTestConnection"); >>>> >>>> String btAddr = "00:08:1B:CA:C7:29"; >>>> >>>> BluetoothDevice btdev = >>>> BluetoothAdapterImpl.getInstance().getRemoteDevice(btAddr); >>>> >>>> // widcom using the following GUID >>>> // 00001101-0000-1000-8000-00805F9B34FB >>>> UUID uuid = >>>> UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); >>>> >>>> try { >>>> BluetoothSocket btsocket = >>>> btdev.createRfcommSocketToServiceRecord(uuid); >>>> >>>> btsocket.connect(); >>>> Log.d("SwxBtCommImpl", "connected"); >>>> >>>> try { >>>> Thread.sleep(1000); >>>> } catch (InterruptedException e1) { >>>> // TODO Auto-generated catch block >>>> e1.printStackTrace(); >>>> } >>>> >>>> InputStream instream = btsocket.getInputStream(); >>>> Log.d("", "getInputStream"); >>>> >>>> byte[] data = new byte[512]; >>>> for (int i = 0; i < 20; i++) { >>>> int numOfAvailable = instream.available(); >>>> >>>> Log.d("SwxBtCommImpl", "read " + i + ": " + numOfAvailable + >>>> " bytes"); >>>> if(numOfAvailable > 0) { >>>> int numOfRead = instream.read(data); >>>> Log.d("SwxBtCommImpl", new String(data) + "-" + >>>> numOfRead); >>>> } else { >>>> >>>> try { >>>> Thread.sleep(500); >>>> } catch (InterruptedException e) { >>>> // TODO Auto-generated catch block >>>> e.printStackTrace(); >>>> } >>>> } >>>> } >>>> >>>> instream.close(); >>>> instream = null; >>>> >>>> btsocket.close(); >>>> >>>> } catch (IOException e) { >>>> // TODO Auto-generated catch block >>>> Log.e("", "bt connection failed", e); >>>> } >>>> >>>> >>>> >>>> return true; >>>> } >>>> >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Android Developers" group. >>> To post to this group, send email to [email protected] >>> To unsubscribe from this group, send email to >>> [email protected]<android-developers%[email protected]> >>> For more options, visit this group at >>> http://groups.google.com/group/android-developers?hl=en >>> >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected]<android-developers%[email protected]> >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en > > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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