public void Can_copy_x_forwarded_headers()
{
var httpContext = new DefaultHttpContext();
httpContext.Request.Method = "GET";
httpContext.Request.Headers.TryAdd(XForwardedExtensions.XForwardedFor, "127.0.0.1");
httpContext.Request.Headers.TryAdd(XForwardedExtensions.XForwardedHost, "localhost");
httpContext.Request.Headers.TryAdd(XForwardedExtensions.XForwardedProto, "http");
httpContext.Request.Headers.TryAdd(XForwardedExtensions.XForwardedPathBase, "127.0.0.1");
var services = new ServiceCollection();
services.AddTransient <ProxyKitClient>();
services.AddTransient(sp => new HttpClient());
var serviceProvider = services.BuildServiceProvider();
httpContext.RequestServices = serviceProvider;
var forwardContext = httpContext
.ForwardTo(new UpstreamHost("http://localhost"))
.CopyXForwardedHeaders();
forwardContext.UpstreamRequest.Headers.Contains(XForwardedExtensions.XForwardedFor).ShouldBeTrue();
forwardContext.UpstreamRequest.Headers.Contains(XForwardedExtensions.XForwardedHost).ShouldBeTrue();
forwardContext.UpstreamRequest.Headers.Contains(XForwardedExtensions.XForwardedProto).ShouldBeTrue();
forwardContext.UpstreamRequest.Headers.Contains(XForwardedExtensions.XForwardedPathBase).ShouldBeTrue();
}