Close Client

Question

how to close client to dont get
java.net.SocketException: Connection reseti dont know why Telnet conection is ok
I know that i close socket i wrong order but how to do
this properly

Answer 1

CLIENT
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import javax.swing.*;
public class Klient2 extends JFrame implements Runnable,ActionListener,WindowListener{
     JTextField wyss;
     JScrollPane scrollPane2;
     JList listaUSER;
     JLabel l1;
     Socket gniazdo;
     Thread w;
     DataInputStream in;
     DataOutputStream out;
     Convert convert = new Convert();
     JButton b1,b2,b3;
     String login;
     byte [] buffor = new byte [200];
     boolean l = true,petla = true;
     public  Klient2(){
          this.addWindowListener(this);
          this.setLayout(null);
          this.setSize(500,400);
          wyss = new JTextField();
          wyss.setSize(160,30);
          wyss.setLocation(80,140);
          this.add(wyss);
          b1 = new JButton("Wyslij");
          b1.setBounds(220,250,80,30);
          b1.addActionListener(this);
          b1.setActionCommand("wyslij");
          b1.setVisible(false);
          this.add(b1);
          b2 = new JButton("login");
          b2.setBounds(250,140,80,30);
          b2.addActionListener(this);
          b2.setActionCommand("login");
          this.add(b2);
          l1 = new  JLabel();
          l1.setBounds(180,220,100,30);
          this.add(l1);
          b3 = new JButton("exit");
          b3.setBounds(220,300,80,30);
          b3.addActionListener(this);
          b3.setActionCommand("exit");
          b3.setVisible(false);
          this.add(b3);
          listaUSER = new JList();
          //listaUSER.addMouseListener(this);
          scrollPane2 = new JScrollPane(listaUSER,
                    JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                    JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
          scrollPane2.setSize(120,200);
          scrollPane2.setLocation(240, 20);
          scrollPane2.setVisible(false);
          this.add(scrollPane2);
     public void actionPerformed(ActionEvent e) {
          if(e.getActionCommand().equals("exit")){
               try {
                    petla = false;
                    //gniazdo.close();
                    out.close();
                    in.close();
                    l = true;
                    System.exit(0);
               } catch (IOException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
          if(e.getActionCommand().equals("login")){
               if(l == true){
               try {
                    gniazdo = new Socket("127.0.0.1",2347);
               } catch (UnknownHostException e1) {
                    e1.printStackTrace();
               } catch (IOException e1) {
                    e1.printStackTrace();
                              w = new Thread(this);
                              w.start();
                              l = false;
                              try {
                                   out = new DataOutputStream( gniazdo.getOutputStream());
                              } catch (IOException e1) {
                                   // TODO Auto-generated catch block
                                   e1.printStackTrace();
                         String header = "L1";
                         String text = wyss.getText();
                         byte [] headerByte = header.getBytes();
                         byte [] loginByte = text.getBytes();
                         int loginSize = loginByte.length;
                         byte [] loginSizeByte =convert.int2bytearray(loginSize);
                         byte [] sendLogin = new byte [2+4+loginSize];
                         for(int i=0;i<2;i++){
                              sendLogin[i] = headerByte;
                         for(int i=2,j=0;i<6;i++,j++){
                              sendLogin[i] = loginSizeByte[j];
                         for(int i=6,j=0;i<sendLogin.length;i++,j++){
                              sendLogin[i] = loginByte[j];
                              try {
                                   out.write(sendLogin);
                                   out.flush();
                              } catch (IOException e1) {
                                   // TODO Auto-generated catch block
                                   e1.printStackTrace();
     public void run() {
          while(petla){
               try {
                    in = new DataInputStream( gniazdo.getInputStream());
                    out = new DataOutputStream( gniazdo.getOutputStream());
                    in.read(buffor);
                    byte [] headerByte = new byte [2];
                    for(int i=0;i<2;i++){
                         headerByte[i] = buffor[i];
                    String hader = new String(headerByte);
                    System.out.println(hader);
                    if(hader.equals("LO")){
                         scrollPane2.setVisible(true);
                         wyss.setVisible(false);
                         b2.setVisible(false);
                         b3.setVisible(true);
                         l1.setText("");
                         byte [] listaSizeByte = new byte [4];
                         for(int i=2,j=0;i<6;i++,j++){
                              listaSizeByte[j] = buffor[i];
                         int listaSize = convert.bytearray2int(listaSizeByte);
                         System.out.println(listaSize);
                         byte [] listaByte = new byte [listaSize ];
                         for(int i=6, j=0 ; i < 6 + listaByte.length ; i++ ,j++){
                              listaByte[j] = buffor[i];
                         String listaIN = new String(listaByte);
                         System.out.println(listaIN);
                         String lis [] = listaIN.split("#");
                         listaUSER.setListData(lis);
                    }else if(hader.equals("LN")){
                         l1.setText("login zajety");
               } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
               break;
     public void windowOpened(WindowEvent arg0) {
          // TODO Auto-generated method stub
     public void windowClosing(WindowEvent e) {
          System.out.println("ZAMYKAM");
          try {
               petla = false;
               if(l == false){
               out.close();
               in.close();
          } catch (IOException e1) {
               // TODO Auto-generated catch block
               e1.printStackTrace();
     public void windowClosed(WindowEvent arg0) {
     public void windowIconified(WindowEvent arg0) {
          // TODO Auto-generated method stub
     public void windowDeiconified(WindowEvent arg0) {
          // TODO Auto-generated method stub
     public void windowActivated(WindowEvent arg0) {
          // TODO Auto-generated method stub
     public void windowDeactivated(WindowEvent arg0) {
          // TODO Auto-generated method stub
     public static void main(String[] args) {
          Klient2 frmae = new Klient2();
          frmae.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frmae.setSize(400,400);
          frmae.setLocation(10,10);
          frmae.setVisible(true);
SERVER
import java.net.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.io.*;
public class Serwer2 extends Thread {
     public final static int defaultPort = 2347;
     ServerSocket theServer;
     Socket s;
     static int numberOfThreads = 2;
     String headerOUT,listOUT="",loginString ;
     byte [] buffor = new byte [200];
     byte [] outByte;
     byte [] headerByte = new byte[2];
     byte [] loginSize = new byte[4];
     serwerGUI2 GUI;
     Convert convert = new Convert();
     ArrayList userList = new ArrayList();
     ArrayList socketList = new ArrayList();
     HashMap mapa = new HashMap();
     public Serwer2(serwerGUI2 gui,ServerSocket ss,ArrayList l ,ArrayList ll,HashMap lll ){
          this.GUI =gui;
          this.theServer = ss;
          this.userList = l;
          this.socketList =ll;
          this.mapa =lll;
     public void run() {
          GUI.pole.append("Uruchomiono watek nasluchujacy"+Thread.currentThread().getName()+"\n");
          while (true) {
               GUI.pole.append("Watek "+Thread.currentThread().getName()+"oczekuje polaczen\n");
               try {
                    s = theServer.accept();
                    socketList.add(s);
                    DataOutputStream out = new  DataOutputStream(s.getOutputStream());
                    DataInputStream in = new  DataInputStream(s.getInputStream());
                    while (true) {
                         int n = in.read(buffor);
                         if (n == -1)
                              socketList.remove(s);
                              userList.remove(loginString);
                              mapa.remove(loginString);
                              headerOUT = "LO";
                              listOUT  ="";
                              for(int i=0;i<userList.size();i++){
                                   listOUT += (String)userList.get(i)+"#";
                              byte [] outheader = headerOUT.getBytes();
                              byte [] listaByte = listOUT.getBytes();
                              int listSize = listaByte.length;
                              byte [] listSizeByte = convert.int2bytearray(listSize);
                              byte [] outLista = new byte [2+4+listSize];
                              for(int i=0;i<2;i++){
                                   outLista[i] =outheader;
                              for(int i=2,j=0;i<6;i++,j++){
                                   outLista[i] =listSizeByte[j];
                              for(int i=6,j=0;i<outLista.length;i++,j++){
                                   outLista[i] =listaByte[j];
                              for(int i=0; i < socketList.size() ;i++){
                                   DataOutputStream out1 = new DataOutputStream(((Socket)socketList.get(i)).getOutputStream());
                                   out1.write(outLista);
                                   out1.flush();
                              GUI.pole.append("Zakonczono polaczenie dlawatku "+Thread.currentThread().getName()+"\n");
                              break;
                         outByte = new byte[n];
                         for(int i = 0 ;i<2;i++){
                              headerByte[i] = buffor[i];
                         String header = new String(headerByte);
                         if(header.equals("L1")){
                              for(int i = 2, j = 0 ;i < 6; i++ ,j++){
                                   loginSize[j] = buffor[i];
                         int size = convert.bytearray2int(loginSize);
                         byte [] loginByte = new byte[size];
                              for(int i = 6, j = 0 ;i < 6+size; i++ ,j++){
                                   loginByte[j] = buffor[i];
                         loginString = new String(loginByte);
                         int przed =mapa.size();
                         mapa.put(loginString,s);
                         int po = mapa.size();
                         if(przed == po){
                              headerOUT = "LN";
                              out.write(headerOUT.getBytes());
                              out.flush();
                         }else{
                              headerOUT = "LO";
                              userList.add(loginString);
                              listOUT = "";
                              for(int i=0;i<userList.size();i++){
                                   listOUT += (String)userList.get(i)+"#";
                              byte [] outheader = headerOUT.getBytes();
                              byte [] listaByte = listOUT.getBytes();
                              int listSize = listaByte.length;
                              byte [] listSizeByte = convert.int2bytearray(listSize);
                              byte [] outLista = new byte [2+4+listSize];
                              for(int i=0;i<2;i++){
                                   outLista[i] =outheader[i];
                              for(int i=2,j=0;i<6;i++,j++){
                                   outLista[i] =listSizeByte[j];
                              for(int i=6,j=0;i<outLista.length;i++,j++){
                                   outLista[i] =listaByte[j];
                              for(int i=0; i < socketList.size() ;i++){
                                   DataOutputStream out1 = new DataOutputStream(((Socket)socketList.get(i)).getOutputStream());
                                   out1.write(outLista);
                                   out1.flush();
                         /*out.write(headerOUT.getBytes());
                         out.flush();*/
                         GUI.pole.append(loginString+"\n");     
                    } // end while
               } // end try
               catch (IOException ex) {
          } // end while
     } // end run
SERVER GUI
import java.awt.event.*;
import java.io.*;
import java.net.*;
import javax.swing.*;
import java.util.*;
public class serwerGUI2 extends JFrame implements ActionListener{
     JButton b1;
     public  JTextArea pole;
     JScrollPane skrol;
     //Klient_pula p;
     ServerSocket theServer;
     Socket s;
     static int numberOfThreads = 3;
     BufferedReader in;
     PrintStream out,outall;
     ArrayList lista;
     public serwerGUI2(){
          super("serwer");
          this.setLayout(null);
          b1 = new JButton("polocz");
          b1.setSize(100,30);
          b1.setLocation(10,10);
          b1.addActionListener(this);
          this.add(b1);
          pole = new JTextArea();
          skrol = new JScrollPane(pole,
                    JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                    JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
          skrol.setSize(200,200);
          skrol.setLocation(150,10);
          this.add(skrol);
     public static void main(String[] args) {
          serwerGUI2 frmae = new serwerGUI2();
          frmae.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frmae.setSize(400,400);
          frmae.setLocation(10,10);
          frmae.setVisible(true);
     public void actionPerformed(ActionEvent e) {
          if(e.getActionCommand().equals("polocz")){
               try {
                    pole.append("Serwer zostal uruchomiony na porcie 2347 \n");
                    ServerSocket ss = new ServerSocket(2347);
                    ArrayList l = new ArrayList();
                    ArrayList ll = new ArrayList();
                    HashMap mapa = new HashMap();
                    //l[0] =;
                    for (int i = 0; i < numberOfThreads; i++) {
                         Serwer2 pes = new Serwer2(this,ss,l,ll,mapa);
                         pes.start();
                         //pes.w.start();
               catch (IOException ex) { System.err.println(ex); }
Convert
import java.nio.ByteBuffer;
public class Convert {
     public static byte[] int2bytearray(int i) {
            byte b[] = new byte[4];
            ByteBuffer buf = ByteBuffer.wrap(b);
            buf.putInt(i);
            return b;
          public static int bytearray2int(byte[] b) {
            ByteBuffer buf = ByteBuffer.wrap(b);
            return buf.getInt();