多线程应用程序中第四个 HttpWebRequest 的奇怪超时

发布于 2024-12-23 07:53:57 字数 1231 浏览 3 评论 0原文

我有一个充当服务器的多线程控制台应用程序。每次新客户端连接到 TcpListener 时，服务器都会生成一个新线程：

//code copied from http://www.switchonthecode.com/tutorials/csharp-tutorial-simple-  threaded-tcp-server
//blocks until a client has connected to the server
TcpClient client = tcpListener.AcceptTcpClient();  
//create a thread to handle communication with connected client
Thread clientThread = new Thread(new ParameterizedThreadStart(HandleClientComm));
                clientThread.Start(client);

该线程使用以下代码发出多个 HttpWebRequest：

public static HttpWebResponse HttpGet(string pRequestURI, string pArgs)
{
    string requestURI = string.Format("{0}?{1}", pRequestURI, pArgs);
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestURI);
    request.Method = "GET";
    request.ContentType = "application/x-www-form-urlencoded";
    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    return response;
}

问题是，我在第四个请求上超时。这真的很奇怪，我无法掌握它的窍门。该代码在单线程应用程序中运行得很好。我还确保使用以下命令关闭响应流：

response.Close();

requestURI 是正确的，因为我尝试将其复制并粘贴到浏览器中。实际上，第四个请求是什么并不重要（我尝试过不同的请求），我总是会超时。

我猜这可能与线程限制有关，但我真的不知道如何解决它。任何建议将不胜感激。

谢谢。

原文

I have a multi-threaded console application acting as a server. The server spawns a new thread every time a new client connects to the TcpListener:

//code copied from http://www.switchonthecode.com/tutorials/csharp-tutorial-simple-  threaded-tcp-server
//blocks until a client has connected to the server
TcpClient client = tcpListener.AcceptTcpClient();  
//create a thread to handle communication with connected client
Thread clientThread = new Thread(new ParameterizedThreadStart(HandleClientComm));
                clientThread.Start(client);

The thread makes a number of HttpWebRequests using the following code:

public static HttpWebResponse HttpGet(string pRequestURI, string pArgs)
{
    string requestURI = string.Format("{0}?{1}", pRequestURI, pArgs);
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestURI);
    request.Method = "GET";
    request.ContentType = "application/x-www-form-urlencoded";
    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    return response;
}

The problem is that, I get a timeout on the FOURTH REQUEST. It is really weird and I cannot get the hang of it. The code worked just fine when it was in a single-threaded application. I am also making sure to close the response stream using:

response.Close();

The requestURI is correct, 'cause I tried copying and pasting it into my browser. Actually, it doesn't matter what the 4th request is (I've tried with different ones), I always get a timeout.

I guess it may be something related to thread-limits, but I really don't know how to solve it. Any suggestions would be greatly appreciated.

Thank you.

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