conn

type Bind interface {
	// LastMark reports the last mark set for this Bind.
	LastMark() uint32

	// SetMark sets the mark for each packet sent through this Bind.
	// This mark is passed to the kernel as the socket option SO_MARK.
	SetMark(mark uint32) error

	// ReceiveIPv6 reads an IPv6 UDP packet into b.
	//
	// It reports the number of bytes read, n,
	// the packet source address ep,
	// and any error.
	ReceiveIPv6(b []byte) (n int, ep Endpoint, err error)

	// ReceiveIPv4 reads an IPv4 UDP packet into b.
	//
	// It reports the number of bytes read, n,
	// the packet source address ep,
	// and any error.
	ReceiveIPv4(b []byte) (n int, ep Endpoint, err error)

	// Send writes a packet b to address ep.
	Send(b []byte, ep Endpoint) error

	// Close closes the Bind connection.
	Close() error
}

type BindSocketToInterface interface {
	BindSocketToInterface4(interfaceIndex uint32, blackhole bool) error
	BindSocketToInterface6(interfaceIndex uint32, blackhole bool) error
}

type Endpoint interface {
	ClearSrc()           // clears the source address
	SrcToString() string // returns the local source address (ip:port)
	DstToString() string // returns the destination address (ip:port)
	DstToBytes() []byte  // used for mac2 cookie calculations
	DstIP() net.IP
	SrcIP() net.IP
}

type IPv4Source struct {
	Src     [4]byte
	Ifindex int32
}

type IPv6Source struct {
	// contains filtered or unexported fields
}

type NativeEndpoint struct {
	sync.Mutex
	// contains filtered or unexported fields
}

type PeekLookAtSocketFd interface {
	PeekLookAtSocketFd4() (fd int, err error)
	PeekLookAtSocketFd6() (fd int, err error)
}