app.UseSlickProxy(handle => { handle.When(request => request.Path.EndsWith("/boo"), request => request.UseReferer($"{request.BaseAddressWithScheme}", request.ExtensionlessWithExtension("html"))); handle.When(request => request.Path.EndsWith("/boo"), request => request.UseRequestHeaders(headers => headers["Referer"] = $"{request.BaseAddressWithScheme}", request.ExtensionlessWithExtension("html"))); handle.When(request => request.Path.EndsWith("/index"), request => request.ExtensionlessWithExtension("html")); handle.When(request => request.Path.EndsWith("/indexString"), request => request.RespondWithString("what's up men!")); handle.When(request => request.Path.EndsWith("/indexObject"), request => request.RespondWithObjectAsJson(DateTime.UtcNow)); handle.When("/cdn2/(.*)", request => request.ForwardToDomain("https://code.jquery.com")); handle.When("/cdn/(.*)", "/cdn/(.*)", request => $"{request.Scheme}://code.jquery.com/{request.Part(1)}"); handle.When(request => request.QueryStringValueByName("link") == "hello", req => req.Deny()); handle.When("(.*)", req => req.Allow()); //the matches below will never be reached coz of the allow above handle.DenyAny(HttpStatusCode.BadRequest); handle.When("(.*)", req => req.DenyWith(HttpStatusCode.OK, null)); handle.When(request => request.QueryStringContainsName("bad"), req => req.Deny()); handle.When("/deny(.*)", request => request.HasNoQueryString(), req => req.Deny()); var list = new List<string> { "" }; handle.When("/scene(.*)", req => list.Contains(req.QueryStringValueByName("link")), req => $"{req.BaseAddressWithScheme}"); },settings);