using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Sockets;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Net.NetworkInformation;
using System.Runtime.InteropServices;
using System.Configuration;

namespace XdCxRhDW.Core
{
    public static class IpHelper
    {
        /// <summary>
        /// 获取本地IP
        /// </summary>
        /// <returns></returns>
        public static string GetLocalIp()
        {
            try
            {
                string localIP = ConfigurationManager.AppSettings["LocalIP"].Trim();//优先使用本地配置的IP
                if(string.IsNullOrWhiteSpace(localIP)) 
                {
                    using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, 0))
                    {
                        socket.Connect("8.8.8.8", 65530);
                        IPEndPoint endPoint = socket.LocalEndPoint as IPEndPoint;
                        localIP = endPoint.Address.ToString();
                    }
                }
                return localIP;
            }
            catch 
            {
                return "127.0.0.1";
            }
        }
    }
}