1000个并发Web请求C＃ [英] 1000 Concurrent Web Request C#

问题描述

大家好，



我正在尝试生成1000个并发Web请求，然后等待响应。所以基本上我的要求就是有意识地点击n个请求并等待每个人的回复。

我写了下面的代码，但是我无法生成那么多请求。

Hi All,

I am trying to generate 1000 concurrent web request and then waiting for the response.So basically my requirement is to hit n numbers of request sententiously and wait for response of each.
I have written the below code to do so, but I am not able to generate those many request.

static void Main(string[] args)
{

            ServicePointManager.DefaultConnectionLimit = 1000000;
            ServicePointManager.Expect100Continue = false;
            List<HttpWebRequest> request = CreateWebRequest(1000);
            TimeMultipleRequests(request);
}
static List<HttpWebRequest> CreateWebRequest(int no)
        {

            //reading an xml file from location which will be passed to WCF api as http post data
            var path = @"D:\PraveenUpadhyay\abc.xml";
            XmlDocument doc = new XmlDocument();
            doc.Load(path);

            List<HttpWebRequest> webRequest = new List<HttpWebRequest>();

            for (int i = 1; i <= no; i++)
            {
                var request = (HttpWebRequest)WebRequest.Create("http://localhost/TestService.svc/rest/agent/asset");
                request.Method = "POST"; request.ContentType = "application/xml;";
                var data = Encoding.ASCII.GetBytes(doc.InnerXml);
                request.ContentLength = data.Length;
                request.Timeout = 1000 * 60 * 10;
                //request.KeepAlive = true;

                using (var stream = request.GetRequestStream())
                {
                    stream.Write(data, 0, data.Length);
                }

                webRequest.Add(request);
            }

            return webRequest;
        }
private static void TimeMultipleRequests(List<HttpWebRequest> requests)
        {
            var stopWatch = new Stopwatch();
            stopWatch.Start();

            foreach (var request in requests)
            {

                request.GetResponse();
            }

            stopWatch.Stop();
            var timeSpan = stopWatch.Elapsed;
            string s = String.Format("{0:00} hours, {1:00} minutes, {2:00} seconds, {3:00} milliseconds", timeSpan.Hours, timeSpan.Minutes, timeSpan.Seconds, timeSpan.Milliseconds / 10);
            Console.WriteLine(s);
        }

推荐答案

实际上，我只能看到代码中的一个问题：你没有处理可能的异常，所以我我不确定问题到底是怎么出现的。所以，这是我的建议：

• 处理所有线程的顶部堆栈帧上的所有异常 。显示全面的异常信息。以防万一。
  
  
• 出于实验目的，增加超时，甚至使其无限。没问题，出于实验目的，即使你在长时间停机的情况下终止你的流程也是可以接受的。
• 在一些知名的高性能网站上测试你的代码，例如Google，Bing，MSDN ...

Actually, I can see only one problem in your code: you did not handle possible exceptions, so I'm not sure how exactly the problem appears. So, here are my suggestions:

• Handle all exceptions on the top stack frame of all threads. Display comprehensive exception information. Just in case.
  
• For experimental purpose, increase timeout, even make it infinite. No problem, for experimental purpose, it's would be acceptable even if you kill your process in case of prolonged hanging.
• Test your code on some well-known high-performance site, such as Google, Bing, MSDN…

这篇关于1000个并发Web请求C＃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！