Resuming the coroutine directly, rather than consuming yet more stack.
When the other end hangs up without even saying good-bye.
If you can't get back to where you started, who you gonna call?
Also known as Nano-COM.
Reducing stack usage.
Reducing stack usage.
Avoiding the problem of the synchronous apartment-changing callback: Let the outgoing thread do whatever it wants to do next.
Getting back to where you started.
Resuming the coroutine when the asynchronous work completes.
Fail me now or fail me later.
