c# 设置代理服务器发送http请求

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

namespace ConsoleApp1
{
    internal class Program
    {
        static void Main(string[] args)
        {
            HttpWebRequestTest();
            HttpClientHandlerTest().Wait();
            Console.ReadKey();
        }

        /// <summary>
        /// HttpWebRequest代理测试
        /// </summary>
        static void HttpWebRequestTest()
        {
            // 设置代理服务器地址和端口号
            //WebProxy proxy = new WebProxy("http://代理服务器地址:代理服务器端口号/");
            WebProxy proxy = new WebProxy("http://localhost:8001/");
            // 创建Web请求对象
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://www.baidu.com");

            // 将代理服务器设置到请求中
            request.Proxy = proxy;

            // 发送HTTP GET请求
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            // 获取响应内容
            string content = new StreamReader(response.GetResponseStream(), Encoding.UTF8).ReadToEnd();

            // 输出响应内容
            Console.WriteLine(content);

            // 关闭响应对象
            response.Close();
        }

        /// <summary>
        /// HttpClient代理测试
        /// </summary>
        static async Task HttpClientHandlerTest()
        {
            // 创建HttpClientHandler对象，并设置代理服务器地址和端口号
            HttpClientHandler handler = new HttpClientHandler()
            {
                //Proxy = new WebProxy("http://代理服务器地址:代理服务器端口号/"),
                Proxy = new WebProxy("http://localhost:8001/"),
                UseProxy = true
            };

            // 创建HttpClient对象，并将HttpClientHandler对象传递给构造函数
            HttpClient client = new HttpClient(handler);

            // 向特定网址发出HTTP GET请求
            HttpResponseMessage response = await client.GetAsync("https://www.baidu.com");

            // 获取响应内容
            string content = await response.Content.ReadAsStringAsync();

            // 输出响应内容
            Console.WriteLine(content);
        }
    }
}