C#5.0异步编程 HttpClient IP代理验证原码，附测试程序

十万个为什么 · 发表于 2014-3-19 16:13:35

本帖最后由十万个为什么于 2014-3-19 18:21 编辑

//访问HttpClient 代码
public  async Task<string> VerifyProxy(string url, string proxy = "", string Method = "GET")
      {
         HttpClientHandler _hch = new HttpClientHandler()
         {
            Proxy = new WebProxy(proxy),
            UseProxy = true
         };
         HttpClient _ch = new HttpClient(_hch);
         try
         {
            sw.Start();
            var response = await _HttpClient.GetAsync(url);//, cancelationTokenSource.Token
            sw.Stop();
            response.EnsureSuccessStatusCode();//如果为false,则异常
            if (response.StatusCode == HttpStatusCode.OK)
            {
                  return "true";
            }
         }
         catch (Exception)
         {
                  return "";
         }
         finally {
         }

         return "";
      }

//显示代码
      private void DisplayResults(int item, string result, decimal time)
      {
         dataGridView1.Rows[item].Cells[2].Value = string.IsNullOrWhiteSpace(result) ? "失败" : "成功";
            dataGridView1.Rows[item].Cells[3].Value = time;
      }

//循环访问HTTPCLIENT
      private async Task PageSizesAsync()
      {
         HttpClientHelper http = new HttpClientHelper();
         Dictionary<string, int> protList = await SetProtList();
         string result = string.Empty;
         foreach (var item in protList)
         {
            result = await http.VerifyProxy(uri, item.Key);
            DisplayResults(item.Value, result, http.sw.ElapsedTicks / (decimal)Stopwatch.Frequency);
         }
      }

点保存也会发布。
忘记放程序了