XdCxRhDW54/XdCxRhDW.Framework/IpHelper.cs

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;
using System.Net.Http;

public static class IpHelper
{
    private static string _localIp;
    /// <summary>
    /// 获取本地IP
    /// </summary>
    /// <returns></returns>
    public static string GetLocalIp()
    {
        if (!string.IsNullOrWhiteSpace(_localIp))
        {
            return _localIp;
        }
        string localIP = null;
        try
        {
            foreach (string item in ConfigurationManager.AppSettings.Keys)
            {
                if (item == "LocalIP")
                {
                    localIP = ConfigurationManager.AppSettings["LocalIP"].Trim();//优先使用本地配置的IP
                }
            }
            if (!string.IsNullOrWhiteSpace(localIP))
                return localIP;
        }
        catch
        {
        }

        try
        {
            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";
    }

    public static void SetLocalIp(string localIp)
    {
        _localIp = localIp;
    }
}