package com.hdl.sdk.link.common.utils;


import java.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

/**
 * Created by Tong on 2021/9/27.
 */
public class IpUtils {

    /**
     * @return 广播地址
     */
    public static String getBroadcastAddress() {
        try {
            for (Enumeration<NetworkInterface> niEnum = NetworkInterface.getNetworkInterfaces();
                 niEnum.hasMoreElements(); ) {
                NetworkInterface ni = niEnum.nextElement();
                if (!ni.isLoopback()) {
                    for (InterfaceAddress interfaceAddress : ni.getInterfaceAddresses()) {
                        if (interfaceAddress.getBroadcast() != null) {
                            return interfaceAddress.getBroadcast().toString().substring(1);
                        }
                    }
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
        return "255.255.255.255";
    }

    public static boolean isLocalIpAddress(String ipAddress) {
        try {
            for (Enumeration<NetworkInterface> niEnum = NetworkInterface.getNetworkInterfaces();
                 niEnum.hasMoreElements(); ) {
                NetworkInterface ni = niEnum.nextElement();
                for (InterfaceAddress interfaceAddress : ni.getInterfaceAddresses()) {
                    if (ipAddress.equals(interfaceAddress.getAddress().getHostAddress())) {
                        return true;
                    }
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
        return false;
    }



    private static String intToIp(int i) {

        return (i & 0xFF) + "." +
                ((i >> 8) & 0xFF) + "." +
                ((i >> 16) & 0xFF) + "." +
                (i >> 24 & 0xFF);
    }
}