Web请求超时处理？ [英] web request timeout handling?

问题描述

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Timeout = 20000;
using (WebResponse response = request.GetResponse())
using (var stream = response.GetResponseStream())
using (var reader = new StreamReader(stream))
{
    var result = reader.ReadToEnd();
    // Do something with result
}

在上面的例子中我有定义一个超时时间，如果碰巧超时，我将如何知道，结果将为空？

In the above example I have a timeout defined, if it happens to hit the timeout how would I know, the result would be empty ?

我收到任何响应类型？

如何确定我已经超时？

推荐答案

GetResponse（）将抛出一个 引发WebException 。很简单，只需要测试 尽管如此 - 将超时设置为1ms，并尝试点击任何需要一段时间的回来。

GetResponse() would throw a WebException. It's simple to test exactly what happens though - set the timeout to 1ms and try to hit anything which takes a while to come back.

事实上，文档明确表示： / p>

In fact, the documentation states this explicitly:

如果在资源可以返回之前超时时间到期，则抛出WebException。

If the timeout period expires before the resource can be returned, a WebException is thrown.

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