Steps to reproduce:
C#var uri = new Uri(@"http://localhost:8016/nwind.json");
var uriJsonSource = new UriJsonSource(uri);
uriJsonSource.HeaderParameters.Add(new HeaderParameter("Cookie", "SomeKey=SomeValue"));
var jsonDataSource = new JsonDataSource()
{
Name = "NWind - Products",
JsonSource = uriJsonSource,
};
jsonDataSource.Fill();