Attempting to JIT compile method '(wrapper delegate-invoke) - System.Net.HttpWebRequest

Question

After migration to Unified API (Xamarin) and upgrading MvvmCross to 3.5 (and retargeting PCL projects to profile 259 .net 4.5) I get this error while trying to run the app on iPhone:

Attempting to JIT compile method '(wrapper delegate-invoke) :invoke_callvirt_void_HttpWebRequest_bool (System.Net.HttpWebRequest,bool)' while running with --aot-only. See http://docs.xamarin.com/ios/about/limitations for more information.

I disabled the linker. It doesn't help. Anyone?

Answer 1

确保在项目的iOS构建选项（高级页面）中选中了“启用通用值类型共享”。

Answer 2

The problem was that I used Microsoft.Http nuget which referenced System.Net.Http.dll. This dll is not the same as Mono System.Net.Http.dll. I removed the nuget and used Mono dll instead (with ModernHttpClient).