Session not maintained using indy 10 idhttp and Delphi XE - delphi

Question

I'm trying to create application that support session using idhttp 10.5.7 on Delphi XE, but the session always changed every time i call the request.
But then I use the same code in Delphi 2006 using indy 10.1.5 the session maintained successfully, even when i call the request multiple times it only create 1 session.
How do I solve this problem in Delphi XE?
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, IdCookieManager, IdBaseComponent, IdComponent, IdTCPConnection,
IdTCPClient, IdHTTP, StdCtrls,iduri,IdCookie;
type
TForm1 = class(TForm)
HTTP: TIdHTTP;
Button1: TButton;
Memo1: TMemo;
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
function get_dataweb(url: string): string;
procedure OnNewCookie(ASender: TObject; ACookie: TIdCookieRFC2109; var VAccept: Boolean);
{ Private declarations }
public
Stream : TStringStream;
cookie : TIdCookieManager;
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var hasil : string;
begin
hasil := get_dataweb('http://localhost/web/tes.php');
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Stream := TStringStream.Create;
cookie := TIdCookieManager.Create;
cookie.OnNewCookie := OnNewCookie;
HTTP.CookieManager := cookie;
end;
procedure TForm1.OnNewCookie(ASender: TObject; ACookie: TIdCookieRFC2109; var VAccept: Boolean);
begin
memo1.Lines.Add(ACookie.CookieText);
end;
function TForm1.get_dataweb(url:string):string;
var hasil : string;
begin
stream.Position := 0;
stream.Size := 0;
http.AllowCookies := True;
http.HandleRedirects := True;
HTTP.ReadTimeout := 0;
HTTP.ConnectTimeout := 0;
HTTP.Request.CustomHeaders.clear;
HTTP.Request.CustomHeaders.Add('user:user');
HTTP.Request.CustomHeaders.Add('password:password');
HTTP.request.useragent := 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0';
try
http.get(url,Stream);
hasil := Stream.DataString;
except
on E: EIdHTTPProtocolException do
begin
hasil := E.ErrorMessage;
result := hasil;
exit;
end;
on E: Exception do
begin
ShowMessage('Failed, ' + E.Message + #13#10 + ' ' + hasil);
end;
end;
result := hasil;
end;
end.
3 times i clicked the button, 3 times new session created

Answer 1

Thankyou for the suggestion Remy, I have upgraded my Indy to 10.6.2 and the problem solved. I followed this tutorial successfully