Android : Asynctask android won't write to socket

Hey I was trying to debugg another app, that uses Asynctasks with a bit more complicated logic to send and recieve lines from a server. In this app, I created a simple Asynctask class that creates a socket, connects to an ip on a port and sends a line. The server is written in python using the Twisted module, so the encoding is set to UTF-8. When the socket is initialised on the device a TCP handshake is done successfuly though a bit oddly (Syn,ack -> ack-> fin,ack) after the initialisation I get the input and output streams which seem to have been rendered useless, though I can write and read from them, nothing ever leaves the device (checked with wireshark). Anyone has had this problem and can help me solve it?

-----> Activity with Task code <--------

public class MyActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_my);
    network task = new network();
    task.execute();
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.my, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

private class network extends AsyncTask<Void, Integer, Void>{

    @Override
    protected Void doInBackground(Void... voids) {
        Socket s = null;
        PrintWriter out = null;
        DataInputStream in = null;
        InetAddress addr = null;
        int port = 2222;
        String ip = new String("192.162.1.109");
        try{
        addr = InetAddress.getByName(ip);}
        catch (UnknownHostException e){
            e.printStackTrace();
        }
        try{
        s = new Socket(addr, port);}
        catch (IOException e){
            e.printStackTrace();
        }
        try{
            in = new DataInputStream(s.getInputStream());
            out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(s.getOutputStream(), "UTF-8")),
            true);
            out.println("100\n");
            out.flush();
        }catch (IOException e){
            e.printStackTrace();
        }
        try{
        in.close();
        out.close();
        s.close();}catch (IOException e){
            e.printStackTrace();
        }
        return null;
    }
}
}