Apps android client and server side programming

[mIXpRo]

hi,
I'm trying to run server side and client side examples I found on the net .
Here's the server :
[HIGH]

public class ServerActivity extends Activity {

private TextView serverStatus;
private TextView serverStatus2;

// DEFAULT IP
public static String SERVERIP = "10.100.102.15";

// DESIGNATE A PORT
public static final int SERVERPORT = 8080;

private Handler handler = new Handler();

private ServerSocket serverSocket;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_server);
serverStatus = (TextView) findViewById(R.id.server_status);
serverStatus2 = (TextView) findViewById(R.id.server_status2);

SERVERIP = getLocalIpAddress();

Thread fst = new Thread(new ServerThread());
fst.start();
}

public class ServerThread implements Runnable {

public void run() {
try {
if (SERVERIP != null) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus
.setText("Listening on IP: " + SERVERIP);
}
});
serverSocket = new ServerSocket(SERVERPORT);
while (true) {
// LISTEN FOR INCOMING CLIENTS
Socket client = serverSocket.accept();
handler.post(new Runnable() {
@Override
public void run() {
serverStatus2.setText("Connected.");
}
});

try {
BufferedReader in = new BufferedReader(
new InputStreamReader(
client.getInputStream()));
String line = null;
while ((line = in.readLine()) != null) {
Log.d("ServerActivity", line);
handler.post(new Runnable() {
@Override
public void run() {
// DO WHATEVER YOU WANT TO THE FRONT END
// THIS IS WHERE YOU CAN BE CREATIVE
}
});
}
break;
} catch (Exception e) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus
.setText("Oops. Connection interrupted. Please reconnect your phones.");
}
});
e.printStackTrace();
}
}
} else {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus
.setText("Couldn't detect internet connection.");
}
});
}
} catch (final Exception e) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Error" + e.getMessage());
}
});
e.printStackTrace();
}
}
}

// GETS THE IP ADDRESS OF YOUR PHONE'S NETWORK
private String getLocalIpAddress() {
try {
for (Enumeration<NetworkInterface> en = NetworkInterface
.getNetworkInterfaces(); en.hasMoreElements() {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf
.getInetAddresses(); enumIpAddr.hasMoreElements() {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
return inetAddress.getHostAddress().toString();
}
}
}
} catch (SocketException ex) {
Log.e("ServerActivity", ex.toString());
}
return null;
}

@Override
protected void onStop() {
super.onStop();
try {
// MAKE SURE YOU CLOSE THE SOCKET UPON EXITING
serverSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}

}

[/HIGH]
And here's the client's code:
[HIGH]

public class ClientActivity extends Activity {

private EditText serverIp;

private Button connectPhones;

private String serverIpAddress = "";

private boolean connected = false;

//private Handler handler = new Handler();

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_client);

serverIp = (EditText) findViewById(R.id.server_ip);
connectPhones = (Button) findViewById(R.id.connect_phones);
connectPhones.setOnClickListener(connectListener);
}

private OnClickListener connectListener = new OnClickListener() {

@Override
public void onClick(View v) {
if (!connected) {
serverIpAddress = serverIp.getText().toString();
if (!serverIpAddress.equals("")) {
Thread cThread = new Thread(new ClientThread());
cThread.start();
}
}
}
};

public class ClientThread implements Runnable {

public void run() {
try {
InetAddress serverAddr = InetAddress.getByName(serverIpAddress);
Log.d("ClientActivity", "C: Connecting...");
Socket socket = new Socket(serverAddr,
8080);
connected = true;
while (connected) {
try {
Log.d("ClientActivity", "C: Sending command.");
PrintWriter out = new PrintWriter(
new BufferedWriter(new OutputStreamWriter(
socket.getOutputStream())), true);
// WHERE YOU ISSUE THE COMMANDS
out.println("Hey Server!");
Log.d("ClientActivity", "C: Sent.");
} catch (Exception e) {
Log.e("ClientActivity", "S: Error", e);
}
}
socket.close();
Log.d("ClientActivity", "C: Closed.");
} catch (Exception e) {
Log.e("ClientActivity", "C: Error", e);
connected = false;
}
}
}
}
[/HIGH]
when running the above , the server throws and exception "Socket Closed" ,
without even reaching the while loop "while (true)".
Does anybody have an idea?

 

[SiempreTuna]

Dumb question, but you're sure you have the connection details correct? Do you have something on port 8080 at 10.100.102.15?

 

[mIXpRo]

it doesn't matter , because in onCreate() function i do :

SERVERIP = getLocalIpAddress();

which initializes SERVERIP to the emulator ip which is : 10.0.2.15
at least that what :

serverStatus
.setText("Listening on IP: " + SERVERIP);

prints.