C#HTTP读写超时问题

我在玩

HttpWebRequest

类，对Timeout/ReadWriteTimeout成员感到困惑。问题是ReadWriteTimeout有时会被忽略，然后我的应用程序在调用

GetResponse（）

时正好挂起5分钟。有时它只是抛出一个

WebException

，有时它会挂起5分钟，这似乎是默认值。我甚至在调用

GetResponse（）

之前检查ReadWriteTimeout值，它总是正确的值，我将其设置为10000

//在另一个函数中，我将getPage传递给

Console.WriteLine("Timeout: {0} / ReadWriteTimeout{1}", page.Timeout, page.ReadWriteTimeout);

var pageResponse = (HttpWebResponse)page.GetResponse();
Console.WriteLine("It reaches this line after 5 minutes");
if (pageResponse.StatusCode == HttpStatusCode.OK)
{
    // read and close it afterwards
}

我正在使用HTTP代理。奇怪的是url在浏览器中加载得很好。我非常感谢您的任何意见

//编辑如下

namespace Proxy
{
 class Program
 {
     static void Main(string[] args)
     {
        var htmlResponse = new StringBuilder();
        var RequestPage = BuildHttpRequest("https://twitter.com/signup");
        GetHttpResponse(RequestPage, htmlResponse);
    }
    public static HttpWebRequest BuildHttpRequest(string url)
    {
        try
        {
            var getPage = (HttpWebRequest)WebRequest.Create(url);
            WebProxy proxyHTTP = new WebProxy("201.38.194.50", 3128);


            getPage.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
            getPage.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.19) Gecko/20110707 Firefox/3.6.19";
            getPage.ProtocolVersion = HttpVersion.Version11;
            getPage.Method = "GET";
            getPage.Proxy = proxyHTTP;
            getPage.Timeout = 10000;
            getPage.ReadWriteTimeout = 10000;
            return getPage;
        }
        catch (WebException ex)
        {
            Console.WriteLine(ex.ToString());
        }

        return null;
    }
    public static bool GetHttpResponse(HttpWebRequest page, StringBuilder html)
    {
        html.Clear();
        try
        {
            Console.WriteLine("A");
            var pageResponse = (HttpWebResponse)page.GetResponse();
            Console.WriteLine("5 minutes!");
            if (pageResponse.StatusCode == HttpStatusCode.OK)
            {

                var reader = new StreamReader(pageResponse.GetResponseStream());
                html.Append(reader.ReadToEnd());
                pageResponse.Close();
                reader.Close();
                return true;
            }
            Console.WriteLine(pageResponse.StatusCode.ToString());
            pageResponse.Close();
            return false;
        }
        catch (WebException ex)
        {
            Console.WriteLine(ex.ToString());
        }

        return false;
    }
}

}

你能试试这个吗

    var request = (HttpWebRequest)WebRequest.Create(url);
    using (var pageResponse = request.GetResponse())
    {
       // Do stuff with `response` here 
    } 
// drop the as HttpWebRequest; 

// The response however is, these will eventually be reclaimed by the GC 
// but you'll run into problems similar to deadlocks if you don't dispose them yourself 
// when you have many of them 

---

你能粘贴得到的确切错误吗…？没有错误，它只是挂起5分钟，这是ReadWriteTimeout的默认值。然后抛出WebException.question是默认设置的以秒或毫秒为单位的时间。。也许你需要把时间调整下来，看看..这是毫秒，调整时间不会改变任何事情，因为它只是忽略了时间。其他代理在10秒后超时正常，但这一个没有。好的，我现在明白了。。好的，我以前有相同的代码。我也想过，但这是我的第一个请求，在此之前没有其他请求。还是谢谢你！你的代码中一定有一些东西，无论是铸造还是扔掉了我们缺少的东西。我举了一个小例子，如果你能阅读编辑，我会很高兴。当然，我可以看看它，看看我是否看到任何奇怪或不合适的东西。我想你也看不出任何东西了吧？真奇怪。

    A first chance exception of type 'System.Net.WebException' occurred in System.dll
    System.Net.WebException: The operation has timed out
    at System.Net.HttpWebRequest.GetResponse()

    var request = (HttpWebRequest)WebRequest.Create(url);
    using (var pageResponse = request.GetResponse())
    {
       // Do stuff with `response` here 
    } 
// drop the as HttpWebRequest; 

// The response however is, these will eventually be reclaimed by the GC 
// but you'll run into problems similar to deadlocks if you don't dispose them yourself 
// when you have many of them