J2SE Bluetooth Server (Using Bluecove)

Question

Hi there
I am trying to set up a simple bluetooth server, one that simply accepts a message/string, and am using the Bluecove API for windows. However, I am having a little bit of trouble setting one up, and what documentation and examples I have found are quite complex, and usually deal with OBEX and the like, which I do not need.
I have a J2ME bluetooth server written, that works (on an emulator at least, doesn't seem to like actual devices, but whatever), and am wondering how much "jiggling about" it will need to port it over to J2SE functionality.
import javax.bluetooth.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import java.io.*;
public class EchoServer extends Form implements Runnable{   
  StreamConnectionNotifier notifier;
  StreamConnection conn;
  LocalDevice localDevice;
  ServiceRecord serviceRecord;
  OutputStream output;
  List list;
  private boolean reqStart;
  private boolean isInit; 
  private static String serverUrl = "btspp://localhost:" + BluetoothEchoDemo.RFCOMM_UUID + ";name=rfcommtest;authorize=true";
  public EchoServer() {
    super("Bluetooth Server");
    isInit = false;
    Thread thread = new Thread(this);
    thread.start();
  public void run() {
    if (!isInit) {
      // Initialization is done in the thread to avoid dead lock 'isInit'
      //ensures it is done once only
      try {
        conn = null;
        localDevice = LocalDevice.getLocalDevice();
        localDevice.setDiscoverable( DiscoveryAgent.GIAC );             
        notifier = (StreamConnectionNotifier)Connector.open(serverUrl);     
      }//end try
      catch (BluetoothStateException e) {       
        System.err.println( "BluetoothStateException: " + e.getMessage() );   
      }//end catch
      catch (IOException e) {       
        System.err.println( "IOException: " + e.getMessage() );     
      }//end catch         
      isInit=true;
      System.out.println( "Starting Echo Server" );               
    }//end if
    try {
      System.out.println("\n\nServer Running...");
      // Pauses thread until Transmission occurs
      conn = notifier.acceptAndOpen();           
      // Read Data Transmission
      String msg = BluetoothEchoDemo.readData(conn);       
      append("Received Message from Client: " + msg);
      System.out.println("recieved"+msg);
      // Send Back a Message
      msg = "Hello Back from Server";       
      output = conn.openOutputStream();      
      output.write(msg.length()); // length is 1 byte
      output.write(msg.getBytes());
      output.close();
      run();
    }//end try
    catch (Exception ex) {
      System.err.println("Bluetooth Server Running Error: " + ex);     
    }//end catch   
  }//end run()
}Any help would be appreciated. Obviously I'm not asking people to do this for me, it's my uni project, but I need some good pointers.

Answer 1

Hey ftr2k5,
I've got the same issue:
- My server (same code as yours) is working on my J2ME phone
- I translated this midlet into J2SE code
- For J2SE code server, I use the Bluecove Avatena package. The server seems to work until the line:
      conn = notifier.acceptAndOpen();            but never get out of this method
Did you find out how to proceed?
Thx, Regis.