如何在.Net内核中获取客户端的公网IP地址？

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

public class Program
{
    public static async Task Main(string[] args)
    {
        string publicIp = await GetPublicIpAddress();
        Console.WriteLine("Public IP Address: " + publicIp);
    }

    public static async Task<string> GetPublicIpAddress()
    {
        using (HttpClient client = new HttpClient())
        {
            try
            {
                HttpResponseMessage response = await client.GetAsync("https://api.ipify.org/?format=json");
                response.EnsureSuccessStatusCode();
                string responseBody = await response.Content.ReadAsStringAsync();
                dynamic data = Newtonsoft.Json.JsonConvert.DeserializeObject(responseBody);
                return data.ip;
            }
            catch (Exception ex)
            {
                Console.WriteLine("Error: " + ex.Message);
                return null;
            }
        }
    }
}