在ASP.NET中获取服务器的IP地址？

string serverIP = HttpContext.Current.Request.ServerVariables["LOCAL_ADDR"];

string clientIP = HttpContext.Current.Request.UserHostAddress;

using System.Net.Http;
using System.Threading.Tasks;

public async Task<string> GetPublicIPAddress()
{
    using (HttpClient client = new HttpClient())
    {
        string response = await client.GetStringAsync("https://api.ipify.org");
        return response;
    }
}