fiber/reuseport_windows.go

package fiber

import (
	"context"
	"net"
	"syscall"

	"golang.org/x/sys/windows"
)

// reuseport returns TCP listener with SO_REUSEADDR option set, SO_REUSEPORT is not supported on Windows, so it uses
// SO_REUSEADDR as an alternative to achieve the same effect.
func reuseport(network, addr string) (net.Listener, error) {
	cfg := net.ListenConfig{
		Control: func(network, address string, c syscall.RawConn) (err error) {
			return c.Control(func(fd uintptr) {
				err = windows.SetsockoptInt(windows.Handle(fd), windows.SOL_SOCKET, windows.SO_REUSEADDR, 1)
			})
		},
	}
	return cfg.Listen(context.Background(), network, addr)
}