Telerik UI for Xamarin doesn't have any custom HttpClient implementations that can assist you with this, this forum is specific to issues surrounding the Telerik UI for Xamarin components.
I recommend posting this question on one of the following communities so that the overall Xamarin dev community can assist.
- StackOverflow (stackoverflow.com)
- XamarinChat Slack (visit xamarinchat.herokuapp.com to be invited automatically)
- Xamarin Forums (forums.xamarin.com)
Lance | Tech Support Engineer, Sr.
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