I am trying to port my code from Delphi 2007 to Delphi XE (no Update 1 yet). The problem which I have stumbled on is that under Delphi XE I am getting different response from server after sending second GET message.
The message in formated HTML says that my session has expired. However, the same code works without any problems under Delphi 2007 up to this day. I have searched information over the internet and found out that I should use a CookieManager?
The thing is that I am not using any in Delphi 2007 and when I assigned one in Delphi XE the result of my code has not changed. Still I am getting message about expired session.
What else can I try?
Update: I have found some info that Indy 10 has problems with cookies but they were fixed.
I have downloaded snapshot Indy10_4722, unfortunately the error still occurs.
Update 2 - Code provided
So, I've prepared an example code. This is compatibile with both Delphi (2007 and XE). However to compile it under 2007 you need to have GraphicEx library.
The code is connecting to the real server, loads a security image and displays it one the form. Rewrite letters from image to the edit box and close the form. That is all what you need to do to test it.
program IndyTest;
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Contnrs, Menus, ExtCtrls, IdBaseComponent,
IdComponent, IdTCPConnection, IdTCPClient, IdHTTP,
{$IFDEF VER220}PngImage{$ELSE}GraphicEx{$ENDIF}, StrUtils;
{$R *.res}
procedure LoadSecurityImage(AImage: TImage; AIdHTTP: TIdHTTP; AImgLink: String);
var
PNGGraphic: {$IFDEF VER220}TPngImage{$ELSE} TPNGGraphic{$ENDIF};
ResponseStream: TMemoryStream;
begin
ResponseStream := TMemoryStream.Create;
PNGGraphic := {$IFDEF VER220}TPngImage.Create{$ELSE}TPNGGraphic.Create{$ENDIF};
try
AIdHTTP.Get(AImgLink, ResponseStream);
ResponseStream.Position := 0;
PNGGraphic.LoadFromStream(ResponseStream);
AImage.Picture.Assign(PNGGraphic);
finally
ResponseStream.Free;
PNGGraphic.Free;
end;
end;
function GetImageLink(AIdHTTP: TIdHTTP): String;
var
WebContentStream: TStringStream;
Index, Index2: Integer;
begin
Result := '';
WebContentStream := TStringStream.Create('');
try
AIdHTTP.Request.ContentType := 'application/x-www-form-urlencoded';
AIdHTTP.Get('http://czat.wp.pl/i,1,chat.html', WebContentStream);
Index := Pos('id="secImg">', WebContentStream.DataString);
if Index > 0 then
begin
Index := PosEx('src="', WebContentStream.DataString, Index) + 5;
Index2 := PosEx('">', WebContentStream.DataString, Index);
if Index > 10 then
begin
Result := Copy(WebContentStream.DataString, Index, Index2 - Index);
end;
end;
finally
WebContentStream.Free;
end;
end;
procedure CheckForContent(const ANick, AImageSeed: String; AIdHTTP: TIdHTTP);
var
WebContent: TStringStream;
S: String;
begin
WebContent := TStringStream.Create('');
try
AIdHTTP.Request.ContentType := 'application/x-www-form-urlencoded';
S := 'http://czat.wp.pl/chat.html?i=31179&auth=nie&nick=' + ANick
+ '®ulamin=tak&simg=' + AImageSeed + '&x=39&y=13';
AIdHTTP.Get(S, WebContent);
if Pos('<div class="applet">', WebContent.DataString) > 0 then
ShowMessage('It works properly.')
else if Pos('<div id="alert">Sesja wygas', WebContent.DataString) > 0 then
ShowMessage('Session expired')
else
ShowMessage('Unknown result.');
finally
WebContent.Free;
end;
end;
var
LogForm: TForm;
SecurityImage: TImage;
Edit: TEdit;
IdHTTPWp: TIdHTTP;
begin
Application.Initialize;
IdHTTPWp := TIdHTTP.Create(Application);
IdHTTPWp.AllowCookies := True;
IdHTTPWp.HandleRedirects := True;
IdHTTPWp.HTTPOptions := [hoForceEncodeParams];
LogForm := TForm.Create(Application);
LogForm.Position := poScreenCenter;
SecurityImage := TImage.Create(LogForm);
SecurityImage.Parent := LogForm;
SecurityImage.AutoSize := True;
Edit := TEdit.Create(LogForm);
Edit.Parent := LogForm;
Edit.Top := 64;
LoadSecurityImage(SecurityImage, IdHTTPWp, GetImageLink(IdHTTPWp));
LogForm.ShowModal;
CheckForContent('TestUser', Edit.Text, IdHTTPWp);
Application.Run;
end.
Update 3
Data packets for Delphi 2007 example are here.
Data packets for Delphi XE example are here.
Free program to analyze packets SmartSniff.
Thanks.
