packet

type Crypto interface {
	VerifyPacket(pkt *Packet) error
	Decrypt(data []byte) ([]byte, error)
	Encrypt(data []byte) ([]byte, error)
	NewPacket(data []byte) (*Packet, error)
}

type Header struct {
	Magic    uint16
	Length   uint16
	F1       uint32 // Unknown field.
	DeviceID uint32
	Stamp    uint32
	Checksum []byte `struc:"[16]byte"`
}

type Meta struct {
	DecodeTime time.Time
	Addr       *net.UDPAddr
}

type Packet struct {
	Meta   Meta
	Header Header
	Data   []byte
}