use tcpKeepaliveListener and reuseport together

[hawell]

I need the functionality of both tcpKeepaliveListener and reuseport.
something like this:

func ListenAndServe() error {
	s := &fasthttp.Server{
		Handler: handler,
		TCPKeepalive: true,
		TCPKeepalivePeriod: 30 * time.Second,
	}
	ln, err := reuseport.Listen("tcp4", ":8080")
	if err != nil {
		return err
	}
	if tcpln, ok := ln.(*net.TCPListener); ok {
		return s.Serve(tcpKeepaliveListener{
			TCPListener:     tcpln,
			keepalive:       s.TCPKeepalive,
			keepalivePeriod: s.TCPKeepalivePeriod,
		})
	}
	return s.Serve(ln)
}

is there a reason why tcpKeepaliveListener is private?
is there another way to have both functionalities that I'm missing here?
thanks a lot

[erikdubbelboer]

I think it would make more sense if Server.Serve() does what tcpKeepaliveListener does. I would accept a pull request to change this as I currently don't have time to fix this myself.

[stokito]

@erikdubbelboer could you please tell me if I should use the reuseport?
I have a heavy loaded OpenRtb service with huge QPS of short requests that are processed in subsecond.
I can't understand if the reuseport is great then why it's not used by default?
What are cons?

[erikdubbelboer]

If you have to ask if you should use reuseport then you don't need to. This is only for really specific cases where you have multiple processes listening on the same port.