netfd

type FD interface {
	io.Reader
	io.Writer
	io.Closer
	SetKeepAlivePeriod(d time.Duration) error
	SetKeepAlive(bool) error
	SetFastOpen(b bool) error
	SetReusePort(b bool) error
	SetReuseAddr(b bool) error
	OK() bool
	LocalAddr() *net.TCPAddr
	RemoteAddr() *net.TCPAddr
	ReadFull(b []byte) (n int, err error)
	Peek(b []byte) (n int, err error)
	Accept(SetNonBlocking bool) (FD, *net.TCPAddr, error)
	Addr() *net.TCPAddr
	SetNonBlocking(bool) error
	SetNoDelay(bool) error
	Int() int
	Bind(sa unix.Sockaddr) error
	Connect(sa unix.Sockaddr) error
	BindToDevice(dev string) error
	Listen(backlog int) error
	Stat() (*syscall.Stat_t, error)
}