这样的IdUDP发送接收格式是不是错了？

Question

客户端发送：
...
        MemStream := TMemoryStream.Create;
        jpg := TJpegImage.Create;
        jpg.Assign(Image0.Picture.Bitmap);
        jpg.CompressionQuality :=20; //图象的质量，100为最高
        jpg.JPEGNeeded;
        jpg.Compress;
        jpg.SaveToStream(MemStream);
        jpg.Free;        IdUDPClient.SendBuffer(MemStream,MemStream.Size);
服务器接收：
procedure TClientForm.IdUDPServerUDPRead(Sender: TObject; AData: TStream;
  ABinding: TIdSocketHandle);
var
    M:TMemorystream;
begin
        M:=TMemorystream.Create;
        m.ReadBuffer(AData,AData.Size);
         .....
end;

Answer 1

IdUDPClient.SendBuffer(MemStream.Memory^,MemStream.Size);

Answer 2

begin 
        M:=TMemorystream.Create; 
        m.ReadBuffer(AData,AData.Size); 
        ..... 
end;貌似应该这样 
M := AData;
或者
AData.ReadBuffer(M, AData.Size);