Hey does anyone have any idea why the server does not receive the message
that is sent. Your help is much appreciated.
On Thu, Nov 12, 2009 at 1:49 AM, Mike88 <michael...@gmail.com> wrote:
> Hello, I have created a simple server and client both on android phone
> or emulators. The code is as follows
>
> Server:
>
> import java.io.BufferedReader;
> import java.io.InputStreamReader;
> import java.net.ServerSocket;
> import java.net.Socket;
>
> import android.app.Activity;
> import android.os.Bundle;
> import android.util.Log;
> import android.widget.TextView;
>
> public class AndroidServer extends Activity {
> /** Called when the activity is first created. */
> public static TextView tv;
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> // setContentView(R.layout.main);
>
> tv = new TextView(this);
> tv.setText("Main - server");
> setContentView(tv);
>
> Thread sThread = new Thread(new TCPServerTest());
>
> sThread.start();
> }
> }
>
> class TCPServerTest implements Runnable{
>
> public static final String SERVERIP = "10.0.2.15";
> public static final int SERVERPORT = 4444;
>
> public void run() {
> try {
> Log.d("TCP", "S: Connecting...");
>
> ServerSocket serverSocket = new ServerSocket
> (SERVERPORT);
> while (true) {
> Socket client = serverSocket.accept();
> Log.d("TCP", "S: Receiving...");
> try {
> BufferedReader in = new BufferedReader(new
> InputStreamReader(client.getInputStream()));
> String str = in.readLine();
> Log.d("TCP", "S: Received: '" + str + "'");
> AndroidServer.tv.setText(str + " ------ " +
> SERVERIP);
> } catch(Exception e) {
> Log.e("TCP", "S: Error", e);
> } finally {
> client.close();
> Log.d("TCP", "S: Done.");
> }
>
> }
>
> } catch (Exception e) {
> Log.e("TCP", "S: Error", e);
> }
> }
> }
>
> Client:
>
> import java.io.BufferedWriter;
> import java.io.OutputStreamWriter;
> import java.io.PrintWriter;
> import java.net.InetAddress;
> import java.net.Socket;
>
> import android.app.Activity;
> import android.os.Bundle;
> import android.util.Log;
> import android.widget.TextView;
>
> public class AndroidClient extends Activity {
> /** Called when the activity is first created. */
> public TextView tv;
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> // setContentView(R.layout.main);
>
> tv = new TextView(this);
> tv.setText("Main - client");
> setContentView(tv);
>
> Thread cThread = new Thread(new TCPClientTest());
>
> cThread.start();
> }
> }
>
> class TCPClientTest implements Runnable {
>
>
> public void run() {
> try {
>
> InetAddress serverAddr = InetAddress.getByName("10.0.2.2");
>
> Log.d("TCP", "C: Connecting...");
> Socket socket = new Socket(serverAddr, 5555);
> String message = "Hello from Client";
> try {
> Log.d("TCP", "C: Sending: '" + message + "'");
> PrintWriter out = new PrintWriter( new BufferedWriter
> ( new OutputStreamWriter(socket.getOutputStream())),true);
>
> out.println(message);
> Log.d("TCP", "C: Sent.");
> Log.d("TCP", "C: Done.");
>
> } catch(Exception e) {
> Log.e("TCP", "S: Error", e);
> } finally {
> socket.close();
> }
> } catch (Exception e) {
> Log.e("TCP", "C: Error", e);
> }
> }
> }
>
>
> The problem can be seen from the log files
>
> Server:
>
> D/TCP ( 700): S: Connecting...
>
> Clinet:
>
> D/TCP ( 703): C: Connecting...
> D/TCP ( 703): C: Sending: 'Hello from Client'
> I/global ( 703): Default buffer size used in BufferedWriter
> constructor. It would be better to be explicit if an 8k-char buffer is
> required.
> D/TCP ( 703): C: Sent.
> D/TCP ( 703): C: Done.
>
>
> Note when i run the program the server has id 5554 and the client id
> 5556 from the emulators.
>
> I have used ./adb -s 5554 forward tcp:4444 tcp:5555
>
> However the client message fails to send to the server. Does anyone
> have any idea why?
>
> I have tried doing ./adb -s 5556 forward tcp:5555 tcp:4444 in case
> that was the problem but i had no luck.
>
> Help would be very much appreciated.
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