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.NET for Android provides open-source bindings of the Android SDK for use with .NET managed languages such as C#
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HttpClient does not respect Timeout #2544

Closed csuzw closed 5 years ago

csuzw commented 5 years ago

I believe this is the same/similar to this issue for Xamarin.iOS: https://github.com/xamarin/xamarin-macios/issues/5190 . There is a hint in the original issue linked in that IOS issue that using the AndroidClientHandler and setting the ReadTimeout/ConnectTimeout is a workaround but I get the an exception about encoding 'identity' not being supported if I do this.

Steps to Reproduce

  1. Create a HttpClient and set Timeout to a value greater than 100s ( the default value).
  2. Send a request that takes longer than 100s but less than the Timeout set.

Expected Behavior

The request to return successfully

Actual Behavior

The request times out after 100s.

Version Information

Microsoft Visual Studio Enterprise 2017 (2) Version 15.9.4 VisualStudio.15.Release/15.9.4+28307.222 Microsoft .NET Framework Version 4.7.03190

Installed Version: Enterprise

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jonathanpeppers commented 5 years ago

Hi @csuzw,

You mentioned you are not using the AndroidClientHandler, which options do you have for your HTTP settings here under Project Options | Android Options | Advanced?

image

Default HttpClient implementation is the same as Managed (as of this post).

csuzw commented 5 years ago

I have Default, Managed and Android. It is currently set to Default (if I try to set it to Android I get the exception about encoding 'identity').

When the HttpClient is being constructed it is using the default constructor so I believe it uses whatever the default is (which seems to be HttpClientHandler).

jonathanpeppers commented 5 years ago

@grendello after the holiday, is it worth testing timeouts with this service? https://httpstat.us/ They have an option to declare a timeout.

It might be that all we can do is forward this issue to the Mono team?

@csuzw it might also help us if you can send a quick code example of what you are doing, thanks!

csuzw commented 5 years ago

Here's a really quick example calling httpstat.us: https://www.dropbox.com/s/rukqqp2yyji5ug9/HttpClientTimeoutApp.zip?dl=0 . HttpClient has timeout set to 200s. The call to httpstat.us has timeout set to 110s. When you click the test button it times out after 100s (at least it does for me!).

Strangely when I tried setting the timeout to a value less than 100s the timeout is respected so this seems to only be a problem when it is greater than the default.

oOGenosOo commented 5 years ago

The problem is not only under Android, i have a IOS/Droid project and the timeout is 100s even under IOS. Some workaround?

grendello commented 5 years ago

This issue is a problem in the Mono BCL, which HttpClient is part of and should be moved to the Mono org.

grendello commented 5 years ago

This issue was moved to mono/mono#12577