_ = http.ListenAndServe("0.0.0.0:8888", http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
		writer.WriteHeader(http.StatusNoContent)
	}))

package main

import (
	"fmt"
	"net"
	"net/http"
	"os"
	"syscall"
)

func main() {
	tcpAddr, err := net.ResolveTCPAddr("tcp4", "0.0.0.0:8888")
	if err != nil {
		panic(err)
	}
	var sa syscall.SockaddrInet4
	sa.Port = tcpAddr.Port
	copy(sa.Addr[:], tcpAddr.IP.To4())

	fd, err := syscall.Socket(syscall.AF_INET, syscall.SOCK_STREAM|syscall.SOCK_NONBLOCK|syscall.SOCK_CLOEXEC, syscall.IPPROTO_TCP)
	if err != nil {
		panic(err)
	}

	if err = syscall.Bind(fd, &sa); err != nil {
		panic(err)
	}

        // this value will not be truncated by kernel
	backlog := 196602
	if err = syscall.Listen(fd, backlog); err != nil {
		panic(err)
	}

	name := fmt.Sprintf("backlog.%d.%s.%s", os.Getpid(), "tcp4", "0.0.0.0:8888")
	file := os.NewFile(uintptr(fd), name)
	ln, err := net.FileListener(file)
	if err != nil {
		_ = file.Close()
		panic(err)
	}

	if err = file.Close(); err != nil {
		_ = ln.Close()
		panic(err)
	}

	_ = http.Serve(ln, http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
		writer.WriteHeader(http.StatusNoContent)
	}))
}