Socket s = new Socket("INDIRIZZO IP", PORTA);

ServerSocket server = new ServerSocket(PORTA);

ServerSocket server = new ServerSocket(PORTA);
Socket client = server.accept();

Socket s = new Socket("INDIRIZZO IP", PORTA);
DataInputStream in = new DataInputStream(s.getInputStream());

ServerSocket server = new ServerSocket(PORTA);
Socket client = server.accept();
DataInputStream input = new DataInputStream(client.getInputStream());

Socket s = new Socket("INDIRIZZO IP", PORTA);
DataOutputStream output = new DataOutputStream(s.getOutputStream());

Socket client = server.accept();
DataInputStream input = new DataInputStream(client.getInputStream());
PrintStream output = new PrintStream(client.getOutputStream());

            String responseLine;
            while ((responseLine = is.readLine()) != null) {
                System.out.println("Server: " + responseLine);
                if (responseLine.indexOf("Ok") != -1) {
                    break;
                }
            }

            String line;
            while (true) {
                line = in.readLine();
                out.println(line);
            }

output.close();
input.close();
s.close();

output.close();
input.close();
client.close();
server.close();