co_main hangs for long-running, detached tasks

[anarthal]

If you spawn a long-running, detached task (like a websocket session), SIGINT won't cancel it, but co_main will wait for it, causing a deadlock.

[klemens-morgenstern]

You co_await it ?

[anarthal]

It's detached, so, no.

[klemens-morgenstern]

That's by design then. SIGINT & SIGTERM send cancellation signals to main, not to everything.

[anarthal]

But co_main does wait for all tasks to finish, detached or not. That's calling for deadlocks.

[klemens-morgenstern]

I'll check if I can wire up detached tasks to a global cancellation thing so they can get signalled.

My idea was that you don't detach, but use wait_group et al.

[klemens-morgenstern]

I think the approach is correct. It's akin to a main creating & detaching threads, which won't be stopped.