Neue Twitter Api

[DavidKlimas]

Bis jetzt hab ich folgenden code zusammen, welcher mir allerdings einen fehler "Unauthorised" ausgibt :

Delphi-Quellcode:

uses [...], EncdDecd, IdHttp, IdSSLOpenSSL;

Const
  ConsumerKey: String = 'xvz1evFS4wEEPTGEFPHBog'; {Beispiel von Twitter}
  ConsumerSecret: String = 'L8qq9PZyRg6ieKGEKhZolGC0vJWLw8iEJ88DRdyOg'; {Beispiel von Twitter}

Function EncodeBase64(Input: String): String;
Var
  fstream, fStringStream: TStringStream;
Begin
  fstream := TStringStream.Create(Input);
  fStringStream := TStringStream.create('');
  EncodeStream(fstream, fStringStream);
  Result := fStringStream.DataString;
End;


procedure TForm1.Button1Click(Sender: TObject);
Var
  Credentials: String;
  MyHTTP: TIdHTTP;
  Result: TMemoryStream;
begin
  Credentials := EncodeBase64(ConsumerKey + ':' +  ConsumerSecret);
  MyHTTP := TIdHTTP.Create(nil);
  With MyHttp do
  Begin
    Request.Host := 'api.twitter.com/';
    Request.CustomHeaders.Add('Authorization: Basic ' + Credentials);
    Request.ContentType := 'application/x-www-form-urlencoded;charset=UTF-8';
    Request.CustomHeaders.Add('grant_type=client_credentials');
    IOHandler := TIdSSLIOHandlerSocketOpenSSL.Create(nil);
    Result := TMemoryStream.Create;
    Post('https://api.twitter.com/oauth/request_token', Result);
    Memo1.Lines.LoadFromStream(Result);
    FreeAndNil(Result);
  End;
  MyHttp.Free;
end;