WebSocketServer port test

Main.java

import java.net.*;
import java.io.*;

import org.java_websocket.server.*;
import org.java_websocket.*;
import org.java_websocket.handshake.*;

public class Main extends WebSocketServer {
	public static final int PORT = Integer.getInteger("port", 3141);

	public static void main(String[] args) throws Exception {
		for(int i = 1; i <= 10; i++) {
			var server = new Main(PORT);
			server.setReuseAddr(true);
			server.run();
		}
	}

	public Main(int port) {
		super(new InetSocketAddress("localhost", port));
	}

	@Override
	public void onStart() {
		System.out.println("Listening on port " + getPort());
		new Thread(() -> {
			try {
				Thread.sleep(200);
				stop();
			} catch(Exception e) {
				e.printStackTrace(System.out);
			}
		}).start();
	}

	@Override
	public void onError(WebSocket socket, Exception e) {
		e.printStackTrace(System.out);
	}

	@Override
	public void onMessage(WebSocket socket, String msg) {
	}

	@Override
	public void onClose(WebSocket socket, int code, String msg, boolean remote) {
	}

	@Override
	public void onOpen(WebSocket socket, ClientHandshake handshake) {
	}
}