Request timeout to not-connected after 3000 ms for NettyResponseFuture

[JMVM]

While running tests using httpServer to mock responses, very often it looks like server it's handling first request (I tried adding a delay to discard request coming while server is still starting up, but still facing the same problem), logging this:

Request timeout to not-connected after 3000 ms for NettyResponseFuture

DEBUG org.asynchttpclient.netty.request.NettyRequestSender - Aborting Future NettyResponseFuture

After that, next test scenarios using httpServer are working as expected, since server is handling as expected.

Any idea why this behaviour?

Thanks