timeout handling with web request using async await

Question

In this walkthrough:

       http://msdn.microsoft.com/en-us/library/vstudio/hh300224.aspx

how would the asynchronous approach be modified to handle timeout scenarios?

     using (WebResponse response = await req.GetResponseAsync())
     {

     }

Or would a different approach have to be taken?

Stephen Cleary · Accepted Answer · 2013-08-01 23:21:52Z

5

The easiest way to do async HTTP requests is to use HttpClient rather than WebRequest, and HttpClient has a Timeout property you can set.

answered Aug 1, 2013 at 23:21

Stephen Cleary

460k78 gold badges721 silver badges858 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Tim Over a year ago

Is there a walkthrough or blog post you might suggest, Stephen? I've been going in circles on this for several days, running into deprecated solutions that don't take advantage of C#5.0. I'm hoping to find an example that performs an async web request, handles timeout, and updates the UI after each such request with a status (good, bad, timed-out). Eventually I want to issue such requests in a tight loop, so that many of them can be active concurrently. I'm checking a database of 100K urls to see which ones are good/moved/slow.

Stephen Cleary Over a year ago

I'm not aware of any resource like that. It seems like it wouldn't be hard to program, though; just define an async helper method to handle the exceptions and translate them to an appropriate return value.

Tim Over a year ago

The advantage I saw to the WebRequest is that it has a HEAD method, and I couldn't find the counterpart to that in the HttpClient. But I've since found it: social.msdn.microsoft.com/Forums/windowsapps/en-US/…

YK1 · Accepted Answer · 2013-08-01 23:22:09Z

0

Set the Timeout property on the WebRequest object

answered Aug 1, 2013 at 23:22

YK1

7,6621 gold badge23 silver badges30 bronze badges

3 Comments

Stephen Cleary Over a year ago

Which only applies to synchronous calls.

YK1 Over a year ago

Oh, that is sad - my bad :(

YK1 Over a year ago

But i'll keep my answer here so that no one else makes same mistake.

Lucas Lima · Accepted Answer · 2018-09-01 14:25:29Z

0

Follow a solution to respect the timeout

await Task.Run(() => {
   var varHttpResponse = varWebRequest.GetResponse();
});

answered Sep 1, 2018 at 14:25

Lucas Lima

92 bronze badges

Collectives™ on Stack Overflow

timeout handling with web request using async await

3 Answers 3

3 Comments

3 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

3 Comments

3 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related