小编Flo*_*scu的帖子

我最近创建了一个用于测试HTTP调用吞吐量的简单应用程序,该应用程序可以以异步方式生成,而不是传统的多线程方法.

该应用程序能够执行预定义数量的HTTP调用,最后它显示执行它们所需的总时间.在我的测试期间,所有HTTP调用都发送到我的本地IIS服务器,并且他们检索了一个小文本文件(大小为12个字节).

下面列出了异步实现代码中最重要的部分:

public async void TestAsync()
{
    this.TestInit();
    HttpClient httpClient = new HttpClient();

    for (int i = 0; i < NUMBER_OF_REQUESTS; i++)
    {
        ProcessUrlAsync(httpClient);
    }
}

private async void ProcessUrlAsync(HttpClient httpClient)
{
    HttpResponseMessage httpResponse = null;

    try
    {
        Task<HttpResponseMessage> getTask = httpClient.GetAsync(URL);
        httpResponse = await getTask;

        Interlocked.Increment(ref _successfulCalls);
    }
    catch (Exception ex)
    {
        Interlocked.Increment(ref _failedCalls);
    }
    finally
    { 
        if(httpResponse != null) httpResponse.Dispose();
    }

    lock (_syncLock)
    {
        _itemsLeft--;
        if (_itemsLeft == 0)
        {
            _utcEndTime = DateTime.UtcNow;
            this.DisplayTestResults();
        }
    }
} …