@nha you're right. It's tied to manifold, which isn't tied to aleph but of course aleph is the most mature backend

I'm working on a manifold/undertow backend currently

What is the way to detect a SSE connection disconnect ? It seems s/on-closed doesn't work on source streams ?

(with yada 1.2 - this could come from aleph/manifold though)

malcolmsparks: is the manifold/undertow backend you are working on done via servlets or via native undertow?

Native. Servlet async only supports streaming in and out, doesn't support thread handover (e.g. for I/O bound ops like database visits)