Mono上的简单HttpClient测试失败

本文关键字:测试 失败 HttpClient 简单 Mono | 更新日期: 2023-09-27 18:26:47

当在Mac OS X上的Mono(3.2.1)上执行这个简单的小测试时,它从不向控制台打印任何响应,而是说Shutting down finalizer thread timed out.
这段代码有什么问题吗?或者我的Mono行为不端?

using System;
using System.Net.Http;
namespace VendTest
{
  class MainClass
  {
        public static void Main(string[] args)
        {
            Client client = new Client();
            client.HttpClientCall();
        }
    }
    public class Client
    {
        HttpClient client;
        public Client()
        {
            client = new HttpClient();
        }
        public async void HttpClientCall()
        {
            HttpClient httpClient = new HttpClient();
            HttpResponseMessage response = await httpClient.GetAsync("http://vendhq.com");
            string responseAsString = await response.Content.ReadAsStringAsync();
            Console.WriteLine(responseAsString);
        }
    }
}

Mono上的简单HttpClient测试失败

您几乎不应该使用async void方法,这也是原因之一。您的Main()将在HttpClientCall()实际完成之前结束。由于从Main()退出会终止整个应用程序,因此不会打印任何内容。

您应该做的是将方法更改为async Task,并在Main()中为其更改Wait()。(混合使用awaitWait()通常会导致死锁,但这是控制台应用程序的正确解决方案。)

class MainClass
{
    public static void Main()
    {
        new Client().HttpClientCallAsync().Wait();
    }
}
public class Client
{
    HttpClient client = new HttpClient();
    public async Task HttpClientCallAsync()
    {
        HttpClient httpClient = new HttpClient();
        HttpResponseMessage response = await httpClient.GetAsync("http://vendhq.com");
        string responseAsString = await response.Content.ReadAsStringAsync();
        Console.WriteLine(responseAsString);
    }
}