Bug 26601 - SupportsPreAuthenticate returns true on iOS.
Summary: SupportsPreAuthenticate returns true on iOS.
Alias: None
Product: iOS
Classification: Xamarin
Component: Xamarin.iOS.dll ()
Version: XI 8.6.0
Hardware: PC Windows
: Normal normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2015-01-30 11:22 UTC by Alexandre Chohfi
Modified: 2016-07-05 12:29 UTC (History)
5 users (show)

Is this bug a regression?: ---
Last known good build:

Test project. (6.54 MB, application/x-zip-compressed)
2015-02-02 10:26 UTC, Alexandre Chohfi

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Description Alexandre Chohfi 2015-01-30 11:22:05 UTC
I'm using SignalR.

Internally, they use Microsoft HTTP Client Libraries (I'm using the latest version, 2.2.28).

SignalR uses this library for many things, but I've found a bug on the extension method SupportsPreAuthenticate of the class System.Net.Http.HttpClientHandlerExtensions.

This method should return false on iOS, but still, it is returning true, causing something like this:
	PreAuthenticate = true;
To throw an exception, when it shouldn't.
Comment 1 Miguel de Icaza [MSFT] 2015-01-30 18:29:23 UTC
Can you please share your solution?
Comment 2 Sebastien Pouliot 2015-01-31 12:01:03 UTC
`System.Net.Http.HttpClientHandlerExtensions` is not a type in the `System.Net.Http.dll` that ships with XI. It might be the MS version that somehow getting copied into the build. The test case will be very helpful to track this :)
Comment 3 Alexandre Chohfi 2015-02-02 10:26:35 UTC
Created attachment 9598 [details]
Test project.

Tested on iOS Simulator 7.1 (iPhone 4s).
Comment 4 Sebastien Pouliot 2016-07-05 12:29:11 UTC
Calling (or not)

> PreAuthenticate = true;

does not change anything in recent versions of Xamarin.iOS.

However the attached test case uses `Microsoft.Net.Http` nuget package which provides it's own `System.Net.Http.dll` assembly, i.e. it does not use the one provided by the Xamarin's SDK, so YMMV.

You should use a PCL profile that allows System.Net.Http.dll without the use of this nuget and you'll get properties that will match the capabilities (and also support for native handlers).