How to find out when a http session is done

[ronag]

I would like to run some code whenever a http session is complete, done and nothing else will be emitted or run on any associated request, response or socket objects. And it should always be invoked regardless whether there has been an error, has a response, aborted or properly finished.

And I'd like to do this for http.ClientRequest as well as http and http2.

I thought, the close event on the request objects would do the trick. But sometimes it's not called at all, sometimes it's called but then later an error is invoked anyway or some event on the response object is invoked.

What's the practice here? Do we have any unit tests for this?

I guess this is what on-finished is for. But I'm not sure if that is for legacy reasons and whether it will work for http2 or if it's a best practise at all. It allocates some closures.

[jasnell]

The Http2Session instance will emit a close event when it is complete.