SignalR Client 2.1.1 in Xamarin

[analogrelay]

ASP.NET Core 2.1.1 contains fixes to resolve blocking issues when using the SignalR Client from Xamarin. However, these fixes also require an updated build of Xamarin.iOS and Xamarin.Android, as well as some additional dependencies.

In order to use the SignalR Client in Xamarin applications you will need to:

1. Upgrade Microsoft.AspNetCore.SignalR.Client to 1.0.1. This build is now available on NuGet.
2. Upgrade Xamarin to the appropriate version:
   • Xamarin.Android 8.4.0.1
   • Xamarin.iOS 11.14.0.4
   • These will be included in:
     • Visual Studio 15.8 Preview 3 (not released at the time of publishing, but coming soon)
     • Visual Studio for Mac 7.6 Preview 3 (not released at the time of publishing, but coming soon)

For discussion, use aspnet/SignalR#1886