[issue21599] Argument transport in attach and detach method in Server class in base_events file is not used

[Giampaolo Rodola']

Changes by Giampaolo Rodola' <g.rodola at gmail.com>:


----------
components: +Asyncio
nosy: +gvanrossum, yselivanov

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21599>
_______________________________________