Sockets: Connection refused: connect

Question

Hello,
I try to create to apps one is server the other client
I inserted the code below.
This is the server code:
ServerSocket serverSocket = new ServerSocket(87);
Socket s;
s = serverSocket.accept();
boolean b = true;
while (b)
  s = serverSocket.accept();
  System.out.println("Connection from " + s.getInetAddress().getHostName());
  BufferedReader bf = new BufferedReader(new InputStreamReader(s.getInputStream()));
  BufferedWriter br = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
  BufferedReader consoleReader = new BufferedReader(new InputStreamReader(System.in));
  ObjectOutputStream oo = new ObjectOutputStream(s.getOutputStream());
  String str = bf.readLine();
  if (str != null)               
     System.out.println("Incomming message: " + str);               
     String consoleInput = consoleReader.readLine();
     if (consoleInput != null)
        oo.writeObject(consoleInput);
        oo.flush();
     else
        if (consoleInput.equals("stop"))
          oo.writeObject("Server will stop");
          oo.flush();
          b = false;
}This is the client:
Socket client = new Socket("localhost",87);
BufferedReader br = new BufferedReader(new InputStreamReader(client.getInputStream()));
boolean b = true;
while (b)
   String str = br.readLine();
   if (str != null)
       System.out.println("receive message: " + str);
       if ( str.equals("Server will stop"))
          b =false;
}The server starts up. But the client gives an java.net.ConnectException: Connection refused: connect
Client is only listening to what the server is sending.
The server send what's entered on the console.
Can somebody tell me what I'm doin wrong?
Thanks a lot
Dries

Answer 1

Here are the exact files that I used and are running on my machine:
// Client.java
import java.io.*;
import java.net.*;
public class Client
     public static void main(String args[]) throws Exception
          Socket client = new Socket("localhost",6655);
          BufferedReader br = new BufferedReader(new InputStreamReader(client.getInputStream()));
          boolean b = true;
          while (b)
             String str = br.readLine();
          if (str != null)
                 System.out.println("receive message: " + str);
          if ( str.equals("Server will stop"))
                    b =false;
//Server.java
import java.io.*;
import java.net.*;
public class Server
     public static void main(String args[]) throws Exception
          ServerSocket serverSocket = new ServerSocket(6655);
     System.out.println("Bind done");
          Socket s;
          s = serverSocket.accept();
          boolean b = true;
          while (b)
            System.out.println("Connection from " + s.getInetAddress().getHostName());
            BufferedReader bf = new BufferedReader(new InputStreamReader(s.getInputStream()));
            BufferedWriter br = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
            BufferedReader consoleReader = new BufferedReader(new InputStreamReader(System.in));
            ObjectOutputStream oo = new ObjectOutputStream(s.getOutputStream());
            String str = bf.readLine();
          if (str != null)
                System.out.println("Incomming message: " + str);
                String consoleInput = consoleReader.readLine();
          if (consoleInput != null)
               oo.writeObject(consoleInput);
               oo.flush();
          else
          if (consoleInput.equals("stop"))
                 oo.writeObject("Server will stop");
                 oo.flush();
                 b = false;
}Then, in one window, start "Server" and another start "Client". It works for me on Windows 2K system.