HttpWebRequest的是分块的数据慢的是、数据、HttpWebRequest

2023-09-03 06:08:21 作者：韶华倾覆三生梦

我使用的HttpWebRequest连接到我的内部内置的HTTP服务器。我的问题是，它比通过连接到服务器例如邮差慢很多（https://chrome.google.com/webstore/detail/postman-rest-client/fdmmgilgnpjigdojojpjoooidkmcomcm?hl=en),这可能是使用Chrome浏览器内置的功能来请求数据。

I'm using HttpWebRequest to connect to my in-house built HTTP server. My problem is that it is a lot slower than connecting to the server via for instance PostMan (https://chrome.google.com/webstore/detail/postman-rest-client/fdmmgilgnpjigdojojpjoooidkmcomcm?hl=en), which is probably using the built-in functions in Chrome to request data.

服务器使用这个例子MSDN（ HTTP上建：// MSDN。 microsoft.com/en-us/library/dxkwh6zw.aspx 的），并使用64的缓冲大小的请求是与体内一些数据的HTTP请求。

The server is built using this example on MSDN (http://msdn.microsoft.com/en-us/library/dxkwh6zw.aspx) and uses a buffer size of 64. The request is a HTTP request with some data in the body.

当通过邮递员连接，该请求被分成一串块和BeginRecieve（）被调用多次，每次接收64B和服用大约2毫秒。除了最后一个，这比64B收到较少。

When connecting via PostMan, the request is split into a bunch of chunks and BeginRecieve() is called multiple times, each time receiving 64B and taking about 2 milliseconds. Except the last one, which receives less than 64B.

但随着我的客户端连接使用HttpWebRequest的时候，第一个BeginRecieve（）回调接收64B，需时约1毫秒，以下只接收47B和需要近200毫秒，最后是第三个接收关于58B和需要2ms的。

But when connecting with my client using HttpWebRequest, the first BeginRecieve() callback receives 64B and takes about 1 ms, the following receives only 47B and takes almost 200 ms, and finally the third receives about 58B and takes 2ms.

什么是与第二BeginRecieve？我注意到连接，只要我开始写数据到HttpWebRequest的输入流建立，但数据接收没有启动，直到我打电话的GetResponse（）。

What is up with the second BeginRecieve? I note that the connection is established as soon as I start to write data to the HttpWebRequest input stream, but the data reception does not start until I call GetResponse().

下面是我的HttpWebRequest code：

Here is my HttpWebRequest code:

var request = (HttpWebRequest)WebRequest.Create(url);

request.Method = verb;
request.Timeout = timeout;
request.Proxy = null;
request.KeepAlive = false;
request.Headers.Add("Content-Encoding", "UTF-8");
System.Net.ServicePointManager.Expect100Continue = false;
request.ServicePoint.Expect100Continue = false;

if ((verb == "POST" || verb == "PUT") && !String.IsNullOrEmpty(data))
{
    var dataBytes = Encoding.UTF8.GetBytes(data);

    try
    {
        var dataStream = request.GetRequestStream();
        dataStream.Write(dataBytes, 0, dataBytes.Length);
        dataStream.Close();
    }
    catch (Exception ex)
    {
        throw;
    }

}

WebResponse response = null;
try
{
    response = request.GetResponse();
}
catch (Exception ex)
{
    throw;
}

var responseReader = new StreamReader(rStream, Encoding.UTF8);
var responseStr = responseReader.ReadToEnd();

responseReader.Close();
response.Close();

我是什么做错了吗？为什么表现这么多不同的方式从Web浏览器一个HTTP请求？这实际上是将延迟200毫秒到我的应用程序。

What am I doing wrong? Why is it behaving so much differently than a HTTP request from a web browser? This is effectively adding 200ms of lag to my application.

HttpWebRequest的是分块的数据慢的是、数据、HttpWebRequest

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