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8 posts

Wannabe Geek

Topic # 9561 27-Sep-2006 10:19
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Im running a java bluetooth server on my laptop using avetana bluetooth api and have a client that i have installed on
a Motorola Razor V3i. My client is not able to discover the services. It returns the message Unable to find service!

Can someone please help me with this problem?


The server code looks like:

//import java.lang.*;
import javax.bluetooth.*;
//import javax.bluetooth.UUID;

public class blueconn {
public static final UUID uuid = new UUID(
"27012f0c68af4fbf8dbe6bbaf7ab651b", false);

public blueconn() {
try {

LocalDevice local = LocalDevice.getLocalDevice();
if(!local.setDiscoverable(DiscoveryAgent.GIAC)) {
System.out.println("failed to Set Discoverable");
// f.append("Failed to change to the dicoverable mode");

System.out.println("Set Discoverable");
StreamConnectionNotifier server = (StreamConnectionNotifier) Connector
+ uuid
//+ ";name="
//+ name
//+ ";authorize=false;authenticate=false;encrypt=false"
StreamConnection conn = server.acceptAndOpen();

// Open the input to read data from
InputStream in = conn.openInputStream();
ByteArrayOutputStream out = new ByteArrayOutputStream();

// Read the data sent from the client until the end of stream
int data;
while((data = != -1){
System.out.println("Data Read");


// Close all open resources

} catch (IOException e) {

public static void main(String[] args) {
new blueconn();


and the Client code looks like:

* Created on 20 September 2006, 01:48

package messagepassing;

import java.lang.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.bluetooth.*;

* @author Saguna
* @version
public class HelloClient extends BluetoothMIDlet {

* Connects to the server and sends 'Hello, World'
* to the server.

public void run() {

// Creates the Form and adds the Exit Command to it
Form f = new Form("Client");
f.addCommand(new Command("Exit", Command.EXIT, 1));
try {

// Retrieve the connection string to connect to the server
LocalDevice local = LocalDevice.getLocalDevice();
DiscoveryAgent agent = local.getDiscoveryAgent();

String connString = agent.selectService (
new UUID("27012f0c68af4fbf8dbe6bbaf7ab651b", false),
if (connString != null){

try {
//Connect to the server and send 'Hello World'
StreamConnection conn = (StreamConnection);
OutputStream out = conn.openOutputStream();
out.write("Hello, World".getBytes());

f.append("Message sent correctly");

} catch (IOException e) {
f.append("IOException: ");
} else {
// Unable to locate a service so just print an error message
// on the screen
f.append("Unable to locate service");

} catch (BluetoothStateException e){
f.append("BluetoothStateException: ");


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871 posts

Ultimate Geek


  Reply # 47013 28-Sep-2006 09:11
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Is bluetooth set to discoverable?

BDFL - Memuneh
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8 posts

Wannabe Geek

Reply # 47183 30-Sep-2006 02:42
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ya bluetooth is set to discoverable and services are enabled! Infact there is just one service that is represented by the UUID!
Can someone plz plz help me out! Its drivin me a little crazy now!

All ur help is really appreciated!

8 posts

Wannabe Geek

Reply # 47360 3-Oct-2006 03:48
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hey guys,

im still looking for help on this! I tried communicatin between two laptops using two BT dongles,

i am able to discover the service but it seems my client is not able to make a connection to my server.

Can someone please help!!


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