I am trying to use the graceful shutdown of HttpServer server for
http4k, using HttpCore 4.4.13 and 5.0.1. I am creating the server simply
using `ServerBootstrap.bootstrap().register(...).create()` and shutting
down with `shutdown(5, TimeUnit.SECONDS)` and
`close(CloseMode.GRACEFUL)` respectively. Here is what I am seeing:
- When the server has never been requested it shuts down instantly
✔️
- When the server has been requested by a client without keep-alive it
shuts down instantly ✔️
- When the server has been requested by a client with keep-alive and the
request is in-flight during shutdown it shuts down as soon as the
request is done ✔️
The problem is, when I connected with a client that uses keep-alive, and
the request has been handled by the server and now the client is holding
the connection open, then when I shutdown the server, the server will
take the whole grace period to shutdown at which point the keep-alive
connections are finally being force-closed.
Is it possible to somehow speed up the shutdown also in this case
without terminating in-flight requests? Is there maybe a workaround to
terminate all idle connections with keep-alives immediately before
shutdown?
Kind regards
Niklas Lochschmidt
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