public HttpResponseMessage ExecuteRequest(HttpRequestMessage request)
        {
            if (Verbose) Console.WriteLine("Received {0} - {1}", request.Method, request.RequestUri);

            var routeData = determineRouteData(request);

            if (routeData == null)
            {
                return write404();
            }
            else
            {
                try
                {
                    var response = new HttpResponseMessage(HttpStatusCode.OK);
                    var arguments = new SelfHostServiceArguments(routeData, request, response);
                    var invoker = routeData.RouteHandler.As<FubuRouteHandler>().Invoker;
                    var requestCompletion = new RequestCompletion();
                    requestCompletion.Start(() => invoker.Invoke(arguments, routeData.Values, requestCompletion));

                    arguments.Writer.AttachContent();

                    return response;
                }
                catch (Exception ex)
                {
                    return write500(ex);
                }
            }
        }