problem for sockets

[jaafar]

hello I have a problem with the client class
it shows that there is a client creation in infinite loop
and when I start the server, there's a problem with exeception of therad
this my class client

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.Socket;
import java.util.Calendar;


public class Client {



    public Client() {
    }
    public static void main(String args[]) {

   //Déclaration des variables
     
   
         String systèmedexploitation;
         long totalMemory;
      long freeMemory;
      long maxMemory;
      String dateheur;
      long EspacedisqueTotal;
      long EspacedisqueUtiliser;
      long EspacedisqueLibre;
      String typesystème;
   
  
     
      Socket socket = null;
      
   while(true)
     try{  
      //création d'un socket client
    	 System.out.println("création de client ");
     socket = new Socket("169.254.168.6", 3078);
      BufferedReader plec = new BufferedReader(new InputStreamReader(socket.getInputStream()));
     PrintWriter pred = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
     
    
     
     //LES méthode de récupération des données local

    
        systèmedexploitation =System.getProperty("os.name");
  typesystème= System.getProperty("os.arch");
  File file = new File( "c:");
  EspacedisqueTotal =  file.getTotalSpace()/1024/1024/1024;
     EspacedisqueLibre = file.getFreeSpace()/1024/1024/1024;
     EspacedisqueUtiliser =(EspacedisqueTotal-EspacedisqueLibre);
  dateheur=Calendar.getInstance().getTime().toLocaleString();
  totalMemory = Runtime.getRuntime().totalMemory()/1024/1024;
  freeMemory = Runtime.getRuntime().freeMemory()/1024/1024;
  maxMemory = Runtime.getRuntime().maxMemory()/1024/1024;
  File file1 = new File( "C:\\Program Files" ); 
  File[] files = file1.listFiles();
  String programmes="";
     for ( int fileInList = 0 ; fileInList < files.length; fileInList++)
     programmes+=files[fileInList].getName()+"  ";
     
   //**************************** adress mac
    String am="";
      NetworkInterface  ni = NetworkInterface.getByInetAddress(InetAddress.getLocalHost());
      if (ni != null) {
      byte[] mac = ni.getHardwareAddress();
      if (mac != null) 
      {
       
       
       try{
       for (int i = 0; i < mac.length-1; i++) 
        am+=String.format("%02X",mac[i])+"-";
       am+=String.format("%02X",mac[mac.length-1]); 
       }
       catch(Exception e)
       {
        System.out.println(e.getMessage());
       }
        
      }                    
      else
      System.out.println("Address doesn't exist or is not accessible.");
      
     }
     else
      System.out.println("Network Interface for the specified address is not found."); 
      //*****************************

   
   
    pred.println(dateheur+"__"+am+"__"+systèmedexploitation+"__"+typesystème+"__"+EspacedisqueTotal+"__"+EspacedisqueUtiliser+"__"+EspacedisqueLibre+"__"+totalMemory+"__"+freeMemory+"__"+maxMemory+"__"+programmes);
  plec.readLine();
    socket.close();
      //-------------------------------------------- scan port
    
  
    new Thread(){
    public void run()
    {
     
    int port=3009;
    String hostname = null;
    PrintWriter pred=null;
    Socket socket=null;
            for (port = 79; port <85; port++) 
               try {

                 socket = new Socket("169.254.195.182", 3016);
                   
                      pred = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
                   
                   
          InetAddress remote = InetAddress.getByName("localhost");

             hostname = remote.getHostName();
                 Socket s = new Socket(remote, port);

                 pred.println("ouver on port " + port + " of " + hostname);

                 s.close();

               }

               catch (IOException ex) {
            	   try
            	   {
                pred.println("Error on port " + port + " of " + hostname); 
            	   }catch(Exception f){
            		   
            	   }
               }
               
               try {
                pred.println("5f");

    socket.close();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }

     }
    }.start();
    
    //----------------------------------------------------------
    
      
      //Fermeture de socket
     socket.close();
     
     
         
     }
     catch(IOException e){
    	 try
    	 {
    		 socket.close(); 
    	 }catch(Exception e1)
    	 {
    		 
    	 }
    	 try {
			Thread.currentThread().sleep(4000);
			System.out.println("------");
		} catch (InterruptedException e2) {
			// TODO Auto-generated catch block
		
		}
     }
     



    }
    
    
}

and this my class Serveur

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package tpjava;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;
public class Serveur {
 
	public Serveur() {}
	public static void main(String args[]) throws UnknownHostException, IOException {
 
		//Déclaration des variables
 
		int sport=3078;
		final String adress="127.0.0.1";
		Socket socket = null;
 
 
 
				System.out.println("Client Try to connect to server in@: "+adress+" on port :"+sport);
 
				socket = new Socket(adress, sport);
 
				BufferedReader plec = new BufferedReader(new InputStreamReader(socket.getInputStream()));
 
				System.out.println("Response : id client is :<<"+plec.readLine()+">>");
 
 
	}
}

erreur d'exception

Client Try to connect to server in@: 127.0.0.1 on port :3078
Exception in thread "main" java.net.ConnectException: Connection refused: connect
	at java.net.DualStackPlainSocketImpl.connect0(Native Method)
	at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
	at java.net.Socket.connect(Socket.java:579)
	at java.net.Socket.connect(Socket.java:528)
	at java.net.Socket.<init>(Socket.java:425)
	at java.net.Socket.<init>(Socket.java:208)
	at tpjava.Serveur.main(Serveur.java:27)
Java Result: 1
BUILD SUCCESSFUL (total time: 1 second)

[PhQ]

It is trying to connect to 127.0.0.1 on port :3078 in the Serveur class.
I believe you need to use a ServerSocket to start a server.

[DarrylBurke]

Cross posted and got the same answer nearly 2 weeks ago (and didn't have the courtesy to reply to responses there)
https://forums.oracle.com/forums/thr...readID=2479586

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