ServiceStack.HttpRequestExtensions.GetParentBaseUrl C# (CSharp) Method

        public static string GetParentBaseUrl(this IRequest request)
        {
            var rawUrl = request.RawUrl;
            var endpointsPath = rawUrl.Substring(0, rawUrl.LastIndexOf('/') + 1);
            return new Uri(request.AbsoluteUri).GetLeftAuthority() + endpointsPath;
        }