Foros Club Delphi - No puedo pasar un stream con los indy

Hola ... tengo el siguiente codigo, y no consigo pasar un stream por los indy ,.... me falta algo ... pero de aqui ya no se seguir

Código Delphi [-]unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, IdThreadMgr, IdThreadMgrDefault, StdCtrls, IdTCPServer,
  IdBaseComponent, IdComponent, IdTCPConnection, IdTCPClient, ExtCtrls;
type
  TForm1 = class(TForm)
    IdTCPClient1: TIdTCPClient;
    IdTCPServer1: TIdTCPServer;
    Button1: TButton;
    Memo1: TMemo;
    IdThreadMgrDefault1: TIdThreadMgrDefault;
    OpenDialog1: TOpenDialog;
    Memo2: TMemo;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure IdTCPServer1Execute(AThread: TIdPeerThread);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var
  mistream: TMemoryStream;
begin
IdTCPServer1.Active := true;
IdTCPClient1.Connect();
mistream := TMemoryStream.Create;
Memo1.Lines.SaveToStream(mistream);
with IdTCPClient1 do
  begin
    WriteInteger(mistream.Size);
    OpenWriteBuffer;
    WriteStream(mistream); //then send the image
    CloseWriteBuffer;
  end;
  FreeAndNil(mistream);
end;
procedure TForm1.IdTCPServer1Execute(AThread: TIdPeerThread);
var
  ftmpStream : TmemoryStream;
  size : integer;
begin
ftmpStream := TMemoryStream.Create();
Size := AThread.Connection.ReadInteger;
AThread.Connection.ReadStream(fTmpStream,Size,False);
Memo2.Lines.LoadFromStream(ftmpStream);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
if OpenDialog1.Execute then
  begin
    memo1.Lines.LoadFromFile(OpenDialog1.FileName);
  end;  
end;
end.

muchas gracias