public class MyService extends Service {
private volatile Socket socket;
public final static String KEY_COMMAND_TYPE = "KEY_COMMAND_TYPE";
public final static String KEY_COMMAND_GET_RESUMES = "KEY_COMMAND_GET_RESUMES";
public static final String KEY_JSONSTRING = "KEY_JSONSTRING";
public static final String KEY_HANDLER = "KEY_HANDLER";
public static final int KEY_UPDATE = 1111;
public static final int KEY_CONNECTED = 2222;


@Override
public IBinder onBind(Intent intent) {
    return null;
}

@Override
public void onCreate() {
    super.onCreate();
    Log.e("MyLog", "onCreateMessangerService");
    new Thread(new Runnable() {
        @Override
        public void run() {
            try {
                Log.e("MyLog", "connect");
                int serverPort = 6666;

                String address = "192.168.1.6";
                try {
                    InetAddress ipAddress = InetAddress.getByName(address);

                    socket = new Socket(ipAddress, serverPort);

                    if(socket.isConnected()){
                        Message mesToActivity = WorkerFragment.handler.obtainMessage();
                        mesToActivity.what = KEY_CONNECTED;
                        WorkerFragment.handler.sendMessage(mesToActivity);
                    }

                    Scanner sc = new Scanner(socket.getInputStream());
                    while (true) {
                        String jsonString = sc.nextLine();
                        Log.e("MyLog", "Got a message from server. Length = " + String.valueOf(jsonString.length()));

                        Message mesToActivity = WorkerFragment.handler.obtainMessage();
                        mesToActivity.what = KEY_UPDATE;
                        Bundle bundle = new Bundle();
                        bundle.putString(KEY_JSONSTRING, jsonString);
                        mesToActivity.setData(bundle);
                        WorkerFragment.handler.sendMessage(mesToActivity);

                        Log.e("MyLog", "Сообщение в активити отправлено.");
                    }
                } catch (IOException e) {e.printStackTrace();}
            } catch (Exception e) {e.printStackTrace();}
        }
    }).start();
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    if(intent != null) {
        Log.e("MyLog", "onStartCommand");

        final String command = intent.getStringExtra(KEY_COMMAND_TYPE);

        if (command != null && command.equals(KEY_COMMAND_GET_RESUMES)) {
            Log.e("MyLog", "if (command == KEY_COMMAND_GET_RESUMES)");
            new Thread(new Runnable() {
                @Override
                public void run() {
                    if (socket == null || socket.isClosed()) {
                        Log.e("MyLog", "Невозможно отправить данные. Сокет не создан или закрыт");
                        return;
                    }
                    try {
                        PrintWriter pw = new PrintWriter(socket.getOutputStream());
                        pw.write(KEY_COMMAND_GET_RESUMES + "n");
                        pw.flush();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }).start();
        }
    }
    return START_NOT_STICKY;
}
@Override
public void onDestroy() {
    Log.e("MyLog", "onDestroy");
    try {
        if(!socket.isClosed())
            socket.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
    super.onDestroy();
}