ServerN Finito!

import java.io.*;
import java.net.*;


public class serverN {
    public static void main(String[] args) {

       try {
           //porta in ascolto per i clientN
           ServerSocket ss = new ServerSocket(5000);
           Socket s = new Socket();
           while(true){
               System.out.println("waiting for clintN on " + ss.getLocalPort());
               s = ss.accept();
               SendRequest r = new SendRequest(s);
               Thread t = new Thread(r);
               t.start();
           }
        } catch (Exception e) {
           System.out.println(e);
       }
    }
}

class SendRequest extends serverN implements Runnable{
    //socket da cui accetta
    Socket s = new Socket();
    Socket to = new Socket();

    SendRequest(Socket s){
        this.s = s;

    }

    @Override
    public void run() {
        try {
            System.out.println("new Connection from ClientN");
            InetAddress addr = InetAddress.getByName("localhost");
            Socket to = new Socket(addr, 3000);
            //leggere dal client
            InputStreamReader readerFrom = new InputStreamReader(this.s.getInputStream());
            BufferedReader readFrom = new BufferedReader(readerFrom);
            PrintStream writerFrom = new PrintStream(this.s.getOutputStream(), true);
            //inoltrare al server
            InputStreamReader readerTo = new InputStreamReader(to.getInputStream());
            BufferedReader readTo = new BufferedReader(readerTo);
            PrintStream writerTo = new PrintStream(to.getOutputStream(), true);


            int type;
            do{
                //leggo richiesta dal client
                String request = new String(readFrom.readLine());
                type = Integer.parseInt(request);
                //costruisco la stringa per la richiesta da inoltrare
                request = "0" + request;
                writerTo.println(request);

                switch (type) {
                    case 1:
                        //creare negozio
                        String shopName = new String(readFrom.readLine());
                        writerTo.println(shopName);
                        String responseAddiction = new String(readTo.readLine());
                        writerFrom.println(responseAddiction);
                        break;
                    case 2:
                        //eliminare negozio
                        String shopNameDelete = new String(readFrom.readLine());
                        writerTo.println(shopNameDelete);
                        String responseDelete = new String(readTo.readLine());
                        writerFrom.println(responseDelete);
                        break;
                    case 3:
                        //inserimento prodotto
                        String shopProductName = new String(readFrom.readLine());
                        String productName = new String(readFrom.readLine());
                        writerTo.println(shopProductName+"-"+productName);
                        String responseProductAddiction = new String(readTo.readLine());
                        writerFrom.println(responseProductAddiction);
                        break;
                    case 4:
                        //eliminazione prodotto
                        String shopNameToDelete = new String(readFrom.readLine());
                        String productNameDelete = new String(readFrom.readLine());
                        writerTo.println(shopNameToDelete+"-"+productNameDelete);
                        String responseProductDeletion = new String(readTo.readLine());
                        writerFrom.println(responseProductDeletion);
                        break;
                }
            }while(type != 0);
            System.out.println("Client Disconnected");

            this.s.close();

        } catch (Exception e) {
            System.out.println(e);
        }
    }
}