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POi have two android apps ,one can send the string over LAN at specific IP and other app for receiving but i want to broadcast the string over LAN?
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copied!<p>I want to broadcast the string over LAN, but when I change the server IP in client code to 255.255.255.255 it doesn't broadcast. What shall I do in order to broadcast the string over LAN? What shall I do in client code so that all the listening ports at different IP's can receive the string at same time.</p> <p>My client or code for sending the string is:</p> <pre><code>public class MainActivity extends Activity { private Socket socket; private static final int SERVERPORT = 6000; private static final String SERVER_IP = "192.168.1.10"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); new Thread(new ClientThread()).start(); } public void onClick(View view) { try { EditText et = (EditText) findViewById(R.id.EditText01); String str = et.getText().toString(); PrintWriter out = new PrintWriter(new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())), true); out.println(str); } catch (UnknownHostException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } class ClientThread implements Runnable { @Override public void run() { try { InetAddress serverAddr = InetAddress.getByName(SERVER_IP); socket = new Socket(serverAddr, SERVERPORT); } catch (UnknownHostException e1) { e1.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } } } } </code></pre> <p>My server or code for receiving string is:</p> <pre><code>public class MainActivity extends Activity { private ServerSocket serverSocket; Handler updateConversationHandler; Thread serverThread = null; private TextView text; public static final int SERVERPORT = 6000; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); text = (TextView) findViewById(R.id.text2); updateConversationHandler = new Handler(); this.serverThread = new Thread(new ServerThread()); this.serverThread.start(); } @Override protected void onStop() { super.onStop(); try { serverSocket.close(); } catch (IOException e) { e.printStackTrace(); } } class ServerThread implements Runnable { public void run() { Socket socket = null; try { serverSocket = new ServerSocket(SERVERPORT); } catch (IOException e) { e.printStackTrace(); } while (!Thread.currentThread().isInterrupted()) { try { socket = serverSocket.accept(); CommunicationThread commThread = new CommunicationThread(socket); new Thread(commThread).start(); } catch (IOException e) { e.printStackTrace(); } } } } class CommunicationThread implements Runnable { private Socket clientSocket; private BufferedReader input; public CommunicationThread(Socket clientSocket) { this.clientSocket = clientSocket; try { this.input = new BufferedReader(new InputStreamReader(this.clientSocket.getInputStream())); } catch (IOException e) { e.printStackTrace(); } } public void run() { while (!Thread.currentThread().isInterrupted()) { try { String read = input.readLine(); updateConversationHandler.post(new updateUIThread(read)); } catch (IOException e) { e.printStackTrace(); } } } } class updateUIThread implements Runnable { private String msg; public updateUIThread(String str) { this.msg = str; } @Override public void run() { text.setText(text.getText().toString()+"Client Says: "+ msg + "\n"); } } } </code></pre>

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