import org.jsoup.Jsoup;

import org.jsoup.nodes.Document;

import org.jsoup.nodes.Element;

import org.jsoup.select.Elements;

import java.util.HashMap;

import java.util.Map;

import java.util.Timer;

import java.util.TimerTask;

public class DOMMirror {

private static Document originalDoc;

private static Document mirroredDoc;

private static Map<String, Element> elementMap = new HashMap<>();

private static final long TIMEOUT = 5000; // Timeout in milliseconds

private static Timer timer;

private static boolean mirroring = true;

public static void main(String[] args) throws Exception {

// Load the original DOM

originalDoc = Jsoup.connect("https://example.com").get(); // Replace with your target URL

mirroredDoc = new Document(originalDoc);

// Populate the element map

populateElementMap(originalDoc);

// Start the mirroring process

startMirroring();

// Keep the program running until the timer expires or is stopped

timer = new Timer();

timer.schedule(new TimerTask() {

@Override

public void run() {

stopMirroring();

System.out.println("Mirroring stopped after timeout.");

System.exit(0);

}

}, TIMEOUT);

}

private static void populateElementMap(Document doc) {

Elements elements = doc.select("*:*"); // Select all elements

for (Element element : elements) {

elementMap.put(element.outerHtml(), element); // Use outerHtml as key

}

}

private static void startMirroring() {

timer = new Timer();

timer.scheduleAtFixedRate(new TimerTask() {

@Override

public void run() {

// Mirror the DOM

mirroredDoc = Jsoup.parse(originalDoc.html()); // Re-parse original to get current state.

// Update the mirrored DOM with the current state of the original

for (Map.Entry<String, Element> entry : elementMap.entrySet()) {

String elementId = entry.getKey();

Element originalElement = entry.getValue();

Element mirroredElement = mirroredDoc.getElementById(elementId);

if (mirroredElement != null) {

mirroredElement.html(originalElement.outerHtml());

} else {

mirroredDoc.appendElement(originalElement);

}

}

//Update elementMap

populateElementMap(mirroredDoc);

}

}, 0, TIMEOUT / 2); // Run every half of the timeout duration

}

private static void stopMirroring() {

mirroring = false;

timer.cancel();

timer.purge();

}

}