Karbot

It's <1ms but it is using ipv6. Another pointer in that direction. Thanks

Many thanks to your answers. I will investigate them. The IPv6 approach seems pretty logical to me. I will have a look at that first and let you know. Maybe there is a switch in the rest libary to set the SocketFamily. Regards Karbot

Hello folks, We're having an issue with local requests. They take much longer than external API calls. It's just a simple GET to the API and it's not reproducible with any other RestClient written with C# or Python. PASCAL/Delphi is not my native language, so I hope to find help here. Please see the timing behavior and code used below. Kind Regards karbot https://<external_hostname> (26ms) https://<external_ip> (168ms) https://mypc (6049ms) https://192.168.178.102 (24ms) https://localhost (2029ms) https://127.0.0.1 (26ms) function TAPIConnector.SendApiRequest(const aURL, aOperation: string; aSetApiParams: TProc<TRESTRequest>; aRaiseException: Boolean): TRESTResponse; begin var restClient := TRESTClient.Create(aURL); try restClient.RaiseExceptionOn500 := aRaiseException; var restRequest := TRESTRequest.Create(restClient); restRequest.Client := restClient; restRequest.Method := TRESTRequestMethod.rmPOST; restRequest.Resource := aOperation; if (Assigned(aSetApiParams)) then begin aSetApiParams(restRequest); end; Result := TRESTResponse.Create(nil); try restRequest.Response := Result; restRequest.Execute; if aRaiseException and not Result.Status.Success then begin const cInvalidSession = 'No valid session GUID'; if Result.Status.ClientErrorUnauthorized_401 and Result.StatusText.Contains(cInvalidSession) then begin raise Exception.Create(aOperation); end; var msg := Result.ErrorMessage; if msg.IsEmpty then begin msg := Result.StatusText; end; raise Exception.Create(aOperation + msg); end; except Result.Free(); raise; end; finally restClient.Free; end; end;