java XML über socket schicken, server blockiert

Socket socket = new Socket(server, port); 

            OutputStream out = socket.getOutputStream();
            Document xmlDoc = Marshaller.getInstance().marshall(className, methodName, returnType, params);
            Source src = new DOMSource(xmlDoc); 
            Result dest = new StreamResult(out); 
            aTransformer.transform(src, dest); 
            out.flush();
            PrintWriter pwriter = new PrintWriter(out,true);
            /* wenn ich den DataInputStream tkiviere blockiert der Server
            DataInputStream in = new DataInputStream(socket.getInputStream());
            BufferedReader bin = new BufferedReader( new InputStreamReader(in));
            readInput(in);
            String fromServer;
            while ((fromServer = bin.readLine()) != null) {
                System.out.println(fromServer);
            }
            */
            out.close();
            pwriter.close();
            //in.close();
            socket.close();

in = socket.getInputStream();
            readInput();
            handleRequest();
            PrintStream os = new PrintStream(socket.getOutputStream());
            Document xmlDoc = at.evs.server.Marshaller.getInstance().marshall(returnType, result);
            Source src = new DOMSource(xmlDoc); 
            Result dest = new StreamResult(os); 
            TransformerFactory tranFactory = TransformerFactory.newInstance(); 
            Transformer aTransformer = tranFactory.newTransformer();
            aTransformer.transform(src, dest); 
            os.flush();
            os.close();
            socket.close();