（HttpWebResponse）request.GetResponse（）挂起 [英] (HttpWebResponse)request.GetResponse() Hangs

问题描述

下面这行代码挂起。有没有办法在挂起时退出此HTTP Web响应请求？

This line of code below hangs. is there a way to back out of this HTTP Web Response request when it hangs?

       

       

HttpWebResponse response =（ HttpWebResponse ）request.GetResponse（）;

HttpWebResponseresponse = (HttpWebResponse)request.GetResponse();

pianoboyCoder

pianoboyCoder

推荐答案

GetResponse是一个阻塞调用，直到服务器发送响应或请求超时。除非有充分的理由使用HttpWebRequest，否则不要使用它。这是相当低的水平。而是考虑使用

WebClient 或
HttpClient 。这两个都允许异步调用。

GetResponse is a blocking call until the server sends the response or the request times out. Unless there is a good reason for using HttpWebRequest then don't use it. It is pretty low level. Instead consider using WebClient or HttpClient. Both of these allow async calls.

对于异步调用，您可以随时使用
超时。如果等待超时，则可以使用已传递的CancellationToken取消请求（对于Httpclient）或调用CancelAsync（对于WebClient）。 

For an async call you can wait however long you want with a timeout. If the wait times out then you can cancel the request using the CancellationToken that was passed (for Httpclient) or call CancelAsync (for WebClient). 

Michael Taylor

http://www.michaeltaylorp3.net

Michael Taylor
http://www.michaeltaylorp3.net

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