This page was last modified 16:46, 19 March 2008.

From Forum Nokia Wiki

I have a problem

Hello I've runned the code in my NetBeans and I have a problem. I'm not capable to send more than one message and I've tried with con.Close() at Server and at Client. Could you help me please?

// FOR THE SERVER

public void run(){
       System.out.println("Starting server - please wait...");

try {

   //notifier = null;
   //con = null;
   
           local_device = LocalDevice.getLocalDevice();
           System.out.println("SERVER: " + local_device.toString());
           
           DiscoveryAgent disc_agent = local_device.getDiscoveryAgent();
           System.out.println("SERVER: " + disc_agent.toString());
           
           local_device.setDiscoverable(DiscoveryAgent.LIAC);
           String service_UUID = "6";
           deviceName = local_device.getFriendlyName();
           String url = "btl2cap://localhost:" + service_UUID + ";name=" + deviceName;
           System.out.println("SERVER: " + url);
           
           //if (midlet.connectedServer == false){
           notifier = (L2CAPConnectionNotifier)Connector.open(url);
          // con = (L2CAPConnection)Connector.open(url);
           //con = (L2CAPConnection)notifier.acceptAndOpen();
           //midlet.connectedServer = true;
           //}
           
           // L2CAPConnectionNotifier notifier = (L2CAPConnectionNotifier)Connector.open(url);
           // con = notifier.acceptAndOpen();
                                   
           while (listening) {
               con = (L2CAPConnection)notifier.acceptAndOpen(); 
               
               
               if (con.ready()){
                   System.out.println("READY!");
                           
                   //midlet.connectedServer = true;
                                       byte[] b = new byte[1000];
                   //
                   System.out.println("1B " + b.toString());
                   //  
                   con.receive(b);
                   //
                   System.out.println("2B " + b.toString());
                   //
                   String s = new String(b, 0, b.length);
                   
                   //System.out.println("Recieved from client: " + s.trim()); 
                   strText = midlet.get_txfSend().getString();
                   mysend(strText);
                   //midlet.get_listInbox().append(s.trim(),null);
                  //listening=false;
                   
         
          

// notifier.close(); // notifier = null; // con = null;

               }
               else
               {
                  // con = notifier.acceptAndOpen();
                   System.out.println("NO ha entrado en el if");
               }
               
                con.close();
           }
                          
       }catch(BluetoothStateException e){System.out.println(e);} catch(IOException f){System.out.println(f);}
   }

// FOR THE CLIENT

public void run() {
       System.out.println("Starting client - please wait...");
       try {
           
           //con = null;
           
           LocalDevice local_device = LocalDevice.getLocalDevice();
           System.out.println("CLIENT: " + local_device.toString());
           
           DiscoveryAgent disc_agent = local_device.getDiscoveryAgent();
           System.out.println("CLIENT: " + disc_agent.toString());
           
           local_device.setDiscoverable(DiscoveryAgent.LIAC);
           inq_listener = new InquiryListener();
           synchronized(inq_listener)	{
               disc_agent.startInquiry(DiscoveryAgent.LIAC, inq_listener);
               try {inq_listener.wait(); }  
               catch(InterruptedException e){}
           }
           
           Enumeration devices = inq_listener.cached_devices.elements();
           System.out.println("CLIENT: " + devices.toString());
           
           UUID[] u = new UUID[]{new UUID( "6", false )};
           int attrbs[] = { 0x0100 };
           serv_listener = new ServiceListener();
           while( devices.hasMoreElements() ) {
               synchronized(serv_listener)	{
                   disc_agent.searchServices(attrbs, u, (RemoteDevice)devices.nextElement(), serv_listener);
                   try {serv_listener.wait();} catch(InterruptedException e){}
               }
           }
       } catch (BluetoothStateException e) {System.out.println(e);}
       
       if (serv_listener.service!=null){
           try {
               String url;
               url = serv_listener.service.getConnectionURL(0, false);
               System.out.println("CLIENT: " + url.toString());
               
               deviceName = LocalDevice.getLocalDevice().getFriendlyName();
               System.out.println("CLIENT: " + deviceName.toString());
               

// if (midlet.connectedClient ==false){ // con = (L2CAPConnection) Connector.open( url ); // con.send("".getBytes()); // }

              con = (L2CAPConnection) Connector.open( url );
                    con.send("".getBytes()); 

                byte[] b = new byte[1000];
              
               while (listening) {
                    
                   if (con.ready()){
                   //    midlet.connectedClient = true;
                       
                       con.receive(b);
                       System.out.println(b.toString());
                       
                       String s = new String(b, 0, b.length);
                       System.out.println("Received from server: " + s.trim());
                      
                       //listening = false;
                       System.out.println("CLIENT: " + s.trim());
                       
                      midlet.get_listInbox().append(s.trim(),null);
                      
                     
                      
                    }
                    
               }
              con.close();
                 
           } catch (IOException g) {System.out.println(g);}
       }
   }

The documentation is different from the code

The first comments says that the file is called BtoothMidlet but the real name is BtoothChat.

/*

* BtoothMidlet.java
*
* Created on April 18, 2007, 12:39 AM
*/

package wiki.nokia.example;

import javax.microedition.midlet.*; import javax.microedition.lcdui.*;

/**

*
* @author  Luis Albinati (luis.albinati@gmail.com)
*/

public class BtoothChat extends MIDlet