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<code java>import java.io.*;
import java.net.*; 
public class Provider{ 
	ServerSocket providerSocket; 
	Socket connection = null;
	ObjectOutputStream out;
	ObjectInputStream in;
	String message;
	Provider(){}
	void run() {
		try {
			providerSocket = new ServerSocket(2004, 10);
			System.out.println("Waiting for connection");
			connection = providerSocket.accept();
			System.out.println("Connection received from " + connection.getInetAddress().getHostName());
			out = new ObjectOutputStream(connection.getOutputStream());
			out.flush();
			in = new ObjectInputStream(connection.getInputStream());
			sendMessage("Connection successful");
			do {
				try {
					message = (String)in.readObject();
					System.out.println("client>" + message);
					if (message.equals("bye"))
						sendMessage("bye");
				}
				catch(ClassNotFoundException classnot) {
					System.err.println("Data received in unknown format");
				}
			} while (!message.equals("bye"));
		}
		catch(IOException ioException) {
			ioException.printStackTrace();
		}
		finally {
			try {
				in.close();
				out.close();
				providerSocket.close();
			}
			catch(IOException ioException) {
				ioException.printStackTrace();
			}
		}
	}
	void sendMessage(String msg) {
		try {
			out.writeObject(msg);
			out.flush();
			System.out.println("server>" + msg);
		}
		catch(IOException ioException) {
			ioException.printStackTrace();
		}
	}
	public static void main(String args[]) {
		Provider server = new Provider();
		while(true) {
			server.run();
		}
	}
}</code>
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