Client/Server and Images

[sciprog1]

Hello Members,

I have a simple Client/Server program which does the following:

Server sends an array of Images one at a time to the Client. Client displays them one at a time.

My Server:

import java.net.*;
import java.io.*;
import javax.swing.*;
public class Server {
    public static void main(String[] args) throws IOException{

        ServerSocket serverSocket = null;
     

        try {
            serverSocket = new ServerSocket(4444);
        } catch (IOException e) {
            System.err.println("Could not listen on port: 4444.");
            System.exit(-1);
        }
       Socket socketOut = serverSocket.accept();
       ObjectOutputStream oos = new ObjectOutputStream(socketOut.getOutputStream()) ;
       String imageFile[] = new String [6];
      
       imageFile[1] = "dice1.gif";
       imageFile[2] = "dice2.gif";
       imageFile[3] = "dice3.gif";
       imageFile[4] = "dice4.gif";
       imageFile[5] = "dice5.gif";
       
       for (int i=1; i<=5; i++)
       {
       String p = JOptionPane.showInputDialog("Enter the next image number");
       
       FileInputStream fis = new FileInputStream( imageFile[i]);
       byte[] buffer = new byte[fis.available()];
       fis.read(buffer);
       
       oos.writeObject(buffer);
       }
       
        socketOut.close();
        serverSocket.close();
    }
}

My Client:

import java.net.*;
import java.io.*;
import java.awt.image.*;
import java.awt.*;
import javax.swing.*;
import javax.imageio.*;

public class Client
{
     private static Socket socket  = null;
        
    public static void main (String args[]) throws IOException, ClassNotFoundException
    {

       
         try {
            socket = new Socket("localhost", 4444);
             } catch (UnknownHostException e) {
            System.err.println("Don't know about host: localhost");
            System.exit(1);
        }
        JFrame frame = new JFrame();
        JLabel label;
        
        ObjectInputStream ois = new ObjectInputStream(socket.getInputStream());
        byte[] buffer = (byte[])ois.readObject();
        Image image = Toolkit.getDefaultToolkit().createImage(buffer); 

        label = new JLabel(new ImageIcon(image));
        frame.getContentPane().add(label);
        frame.pack();
        frame.setVisible(true);
        
        socket.close();

}
}

My Problem:
The first two images that the Server sends is received and displayed at the Client side accurately. After that, I get the following exception:

java.net.SocketException: Software caused connection abort: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1838)
at java.io.ObjectOutputStream$BlockDataOutputStream.writeByte(ObjectOutputStream.java:1876)
at java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1537)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:329)
at Server.main(Server.java:34)

I would be grateful for any help!!

Thank you!!
sciprog1

[sciprog1]

Hello Members,

Could someone possibly reply?

Thank you!!

[~s.o.s~]

Why does the client only read a single image whereas the server writes out 5 images? Why doesn't the server run in a headless mode i.e. why doesn't it accept the image number from the client or via a configuration rather than popping up a box?

The error probably means that the client closed the connection to the server hence writing out to the "client stream" gives an exception...

[sciprog1]

Hello s.o.s,

Thanks for the reply! That was very silly on my part. It works well now!!

Regards