GETClient.java

import java.io.ObjectOutputStream;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.ObjectInputStream;
import java.net.Socket;
import java.util.LinkedList;
import java.net.InetAddress;
import java.util.Scanner;

public class GETClient {
    public static int lamportClock = 0;
    public static int ID = 001;
    public static String hostName = "";
    public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException, NullPointerException {
        int port = 0;
        Scanner input = new Scanner(System.in);
        System.out.println("Enter the Client Name and Port Number: ");
        hostName = input.nextLine();
        hostName = hostName.replace("https://", "");
        String[] nameComponents = hostName.split(":");
        hostName = nameComponents[0];
        port = Integer.parseInt(nameComponents[1]);

        try (Socket socket = new Socket(hostName, port)) {
            System.out.println("Connected at: " + socket.getInetAddress().getHostAddress() + 
                    " (address) " + socket.getInetAddress().getHostName() + 
                    " (host name)");
            
            PrintWriter outBound = new PrintWriter(socket.getOutputStream(), true);

            lamportClock++;
            System.out.println("Timestamp at: " + lamportClock);
            
            System.out.println("GET /atom.xml HTTP/1.1\r\nHost: localhost\r\nUser-Agent: " + 
                ID + "\r\nAccept: application/atom+xml");
            
            outBound.println("GET /atom.xml HTTP/1.1");
            outBound.println("Host: localhost");
            outBound.println("User-Agent: " + ID);
            outBound.println("Accept: application/atom+xml");
            
            ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream());
            Packet toPacket = new Packet("GET", lamportClock);
            lamportClock++;
            oos.writeObject(toPacket);

            ObjectInputStream ois = new ObjectInputStream(socket.getInputStream());
            XMLPacket fromPacket = (XMLPacket) ois.readObject();
            LinkedList<String> receivedXML = fromPacket.xmlContent;
            lamportClock = Math.max(lamportClock, fromPacket.timeStamp);
            lamportClock++;
            System.out.println("Timestamp at: " + lamportClock);

            XMLFactory xmlFactory = new XMLFactoryImplementation();
            for (int i = 0; i < receivedXML.size(); i++) {
                xmlFactory.printXML(i, receivedXML.get(i));
            }
        }
        catch( Exception e ) {
            System.err.println("Client exception: " + e.toString());
            e.printStackTrace();
        }
    }
}