Too strict condition to close the connection

[nomo-nvm]

Hi,

It seems should_shut_down() is a little bit to strict. For the future to gracefully exit, the application needs both producer (the handle, _ in example) and consumer (messages) to be dropped (see here). However in an application when the receiver is moved to a new task, there is no way to drop it.

How to gracefully exit the connection future?

edit: if the should_shut_down() would check whether the requests_rx is closed (and only this), my app could just drop the handle and be done with it.

[cathay4t]

Maybe we should change it to

        self.socket_closed
            || self.unsolicited_messages_tx.is_none()
            || self.requests_rx.is_none()

Let me test a bit.