package org.kne.cloud.network.nathole;

import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketTimeoutException;
import java.net.UnknownHostException;

public class TCPNatHoleTeat {
	public static void main(String[] args) throws IOException {

		x("183.198.152.240", 12187);

	}

	private static void x(String nat, int port) throws IOException {
		for (int i = 10000; i < 20000; i++) {
			System.out.println("try" + i);
			Socket s = null;
			ServerSocket srs = null;
			try {
				s = new Socket();
				s.bind(new InetSocketAddress(InetAddress.getByName("0.0.0.0"), i));
				try {
				s.connect(new InetSocketAddress(InetAddress.getByName("1.1.1.1"), 443), 1);
				}catch(SocketTimeoutException e) {
					
				}
				s.close();

				srs = new ServerSocket();
				srs.setReuseAddress(true);
				srs.bind(new InetSocketAddress("0.0.0.0", i));
				ServerSocket srs2 = srs;
				new Thread(() -> {
					try {
						while (true) {
							Socket sa = srs2.accept();
							System.out.println(sa.toString());
							//sa.close();
						//	System.exit(0);
						}
					} catch (IOException e) {
						// e.printStackTrace();
					}
				}).start();

				/*Socket ste = new Socket();
				try {
					ste.connect(new InetSocketAddress(nat, port), 1);
				} catch (SocketTimeoutException e) {

				}
				ste.close();*/
			} catch (IOException e) {
				e.printStackTrace();
			} finally {
				if (s != null)
					s.close();
				/*if (srs != null)
					srs.close();*/
			}
		}
	}
}