[libmicrohttpd] upgrading and life cycle of sockets

[José Bollo]

Hi there,

After a switching protocol for web socket for example, libmicrohttp
keeps the socket under the table until a call to MHD_upgrade_action
(something, MHD_UPGRADE_ACTION_CLOSE).

So, it enforces to have a link to libmicrohttp when using such switched
protocol socket.

Is it possible to break that link? To tell libmicrohttp to forget and
clean things related to that socket and let far part of code use the
socket freely?

Best
José