Windows.Web.Http.HttpClient Timeout Option

Question

Due to ssl certificate issue we are using "Windows.Web.Http.HttpClient" API in my app service layer. 

I referred below sample for my project. 

http://code.msdn.microsoft.com/windowsapps/HttpClient-sample-55700664

How can we implement the timeout option in "Windows.Web.Http.HttpClient" API?

Answer 1

There are used Windows.Web.Http.HttpClient in sample. But also you can use System.Net.Http.HttpClient which has Timeout property.

Answer 2

No, System.Net.Http.HttpClient doesn't have the SSL filter option.

Answer 3

Hi, Pradeep

You can use the HttpClient.Timeout property to  set or queried the timeout.

You also can use a CancellationTokenSource with a timeout.

HttpClient client = new HttpClient();
        var cancellationTokenSource = new CancellationTokenSource(2000); //timeout
        try
        {
            var response = await client.GetAsync("https://test.example.com", cancellationTokenSource.Token);
        }
        catch (TaskCanceledException ex)
        {

        }

There a link you can refer to see how to use the CancellationTokenSource  to set timeout:

http://msdn.microsoft.com/en-us/library/windows/apps/jj710176.aspx

Best Wishes!

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Answer 4

There's a bit of confusion here -- the Windows 8.1 Windows.Web.Http uses the standard Windows Runtime mechanisms for timeout.  Some sample code is:

 var cts = new CancellationTokenSource();
 cts.CancelAfter(timeout);
 var hc = new HttpClient();
 try
 {
  var task = hc.GetStringAsync(new Uri("http://msw")).AsTask(cts.Token);
  var result = await task;
  uiResults.Text = result;
 }
 catch (Exception exception)
 {
  uiResults.Text = "Exception thrown: " + exception.Message;
 }

CancellationTokenSource is in System.Threading, and is a C# construct.

The other solution is using the System.Net.Http HttpClient; it's not the preferred HttpClient.  That one does have a GetAsync() where you can pass in the cancellation token.

If you would like an overall diagram of the Windows.Web.Http family of classes, there's a poster available for download at http://www.microsoft.com/en-us/download/details.aspx?id=40018

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Network Developer Experience Team (Microsoft)