Function MarshalMessage

pkg/encoding/lorawan/messages.go:539–561

MarshalMessage returns encoded msg.

(msg *ttnpb.Message)

// MarshalMessage returns encoded msg.
func MarshalMessage(msg *ttnpb.Message) ([]byte, error) {
	if msg.MHdr == nil {
		return nil, errMissing("MHDR")
	}
	switch msg.MHdr.MType {
	case ttnpb.MType_CONFIRMED_DOWN, ttnpb.MType_UNCONFIRMED_DOWN, ttnpb.MType_CONFIRMED_UP, ttnpb.MType_UNCONFIRMED_UP:
		// MHDR(1) + Payload(up to 250) + MIC(4)
		return AppendMessage(make([]byte, 0, 255), msg)
	case ttnpb.MType_JOIN_REQUEST:
		// MHDR(1) + Payload(18) + MIC(4)
		return AppendMessage(make([]byte, 0, 23), msg)
	case ttnpb.MType_REJOIN_REQUEST:
		// MHDR(1) + Payload(14|19) + MIC(4)
		return AppendMessage(make([]byte, 0, 24), msg)
	case ttnpb.MType_JOIN_ACCEPT:
		// MHDR(1) + Encrypted payload(16|32)
		return AppendMessage(make([]byte, 0, 33), msg)
	case ttnpb.MType_PROPRIETARY:
		return nil, errProprietary.New()
	default:
		return nil, errUnknown("MType")(msg.MHdr.MType.String())
	}
}

// UnmarshalMessage unmarshals b into msg.
func UnmarshalMessage(b []byte, msg *ttnpb.Message) error {