//downlinkTopic = $"v3/{applicationId}/devices/{deviceId}/down/push";
//uplinkTopic = $"v3/+";
//uplinkTopic = $"v3/#";
//uplinkTopic = $"v3/{applicationId}/+"; //exception
//uplinkTopic = $"v3/{applicationId}/*";
//uplinkTopic = $"v3/devices/+";
//uplinkTopic = $"v3/devices/#";
//uplinkTopic = $"v3/devices/+/events/+";
//uplinkTopic = $"v3/{applicationId}/devices/+/events/+";
//uplinkTopic = $"v3/{applicationId}/devices/{deviceId}/events/update";
//uplinkTopic = $"v3/{applicationId}/devices/{deviceId}/events/create";
//uplinkTopic = $"v3/{applicationId}/devices/{deviceId}/events/delete";
//uplinkTopic = $"v3/{applicationId}/devices/+/events/+";
//uplinkTopic = $"v3/{applicationId}/devices/+/events/create";
//uplinkTopic = $"v3/{applicationId}/devices/+/events/update";
//uplinkTopic = $"v3/{applicationId}/devices/+/events/delete";
//uplinkTopic = $"v3/{applicationId}/devices/+/events/+";
//uplinkTopic = $"v3/{applicationId}/devices/{deviceId}/up";

string downlinkTopic = $"v3/{applicationId}/devices/{deviceId}/down/push";
string downlinkQueuedTopic = $"v3/{applicationId}/devices/{deviceId}/down/queued";
string downlinkSentTopic = $"v3/{applicationId}/devices/{deviceId}/down/sent";
string downlinkAckTopic = $"v3/{applicationId}/devices/{ deviceId}/down/ack";
string downlinkNakTopic = $"v3/{applicationId}/devices/{ deviceId}/down/nack";
string downlinkFailedTopic = $"v3/{applicationId}/devices/{deviceId}/down/sent";

namespace devMobile.TheThingsNetwork.Models
{
   public class ApplicationIds
   {
      public string application_id { get; set; }
   }

   public class EndDeviceIds
   {
      public string device_id { get; set; }
      public ApplicationIds application_ids { get; set; }
      public string dev_eui { get; set; }
      public string join_eui { get; set; }
      public string dev_addr { get; set; }
   }
}

type ApplicationUplink struct {
	// Join Server issued identifier for the session keys used by this uplink.
	SessionKeyID []byte `protobuf:"bytes,1,opt,name=session_key_id,json=sessionKeyId,proto3" json:"session_key_id,omitempty"`
	FPort        uint32 `protobuf:"varint,2,opt,name=f_port,json=fPort,proto3" json:"f_port,omitempty"`
	FCnt         uint32 `protobuf:"varint,3,opt,name=f_cnt,json=fCnt,proto3" json:"f_cnt,omitempty"`
	// The frame payload of the uplink message.
	// The payload is still encrypted if the skip_payload_crypto field of the EndDevice
	// is true, which is indicated by the presence of the app_s_key field.
	FRMPayload []byte `protobuf:"bytes,4,opt,name=frm_payload,json=frmPayload,proto3" json:"frm_payload,omitempty"`
	// The decoded frame payload of the uplink message.
	// This field is set by the message processor that is configured for the end device (see formatters) or application (see default_formatters).
	DecodedPayload *types.Struct `protobuf:"bytes,5,opt,name=decoded_payload,json=decodedPayload,proto3" json:"decoded_payload,omitempty"`
	// Warnings generated by the message processor while decoding the frm_payload.
	DecodedPayloadWarnings []string `protobuf:"bytes,12,rep,name=decoded_payload_warnings,json=decodedPayloadWarnings,proto3" json:"decoded_payload_warnings,omitempty"`
	// A list of metadata for each antenna of each gateway that received this message.
	RxMetadata []*RxMetadata `protobuf:"bytes,6,rep,name=rx_metadata,json=rxMetadata,proto3" json:"rx_metadata,omitempty"`
	// Settings for the transmission.
	Settings TxSettings `protobuf:"bytes,7,opt,name=settings,proto3" json:"settings"`
	// Server time when the Network Server received the message.
	ReceivedAt time.Time `protobuf:"bytes,8,opt,name=received_at,json=receivedAt,proto3,stdtime" json:"received_at"`
	// The AppSKey of the current session.
	// This field is only present if the skip_payload_crypto field of the EndDevice
	// is true.
	// Can be used to decrypt uplink payloads and encrypt downlink payloads.
	AppSKey *KeyEnvelope `protobuf:"bytes,9,opt,name=app_s_key,json=appSKey,proto3" json:"app_s_key,omitempty"`
	// The last AFCntDown of the current session.
	// This field is only present if the skip_payload_crypto field of the EndDevice
	// is true.
	// Can be used with app_s_key to encrypt downlink payloads.
	LastAFCntDown uint32 `protobuf:"varint,10,opt,name=last_a_f_cnt_down,json=lastAFCntDown,proto3" json:"last_a_f_cnt_down,omitempty"`
	Confirmed     bool   `protobuf:"varint,11,opt,name=confirmed,proto3" json:"confirmed,omitempty"`
	// Consumed airtime for the transmission of the uplink message. Calculated by Network Server using the RawPayload size and the transmission settings.
	ConsumedAirtime *time.Duration `protobuf:"bytes,13,opt,name=consumed_airtime,json=consumedAirtime,proto3,stdduration" json:"consumed_airtime,omitempty"`
	// End device location metadata, set by the Application Server while handling the message.
	Locations            map[string]*Location `protobuf:"bytes,14,rep,name=locations,proto3" json:"locations,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
	XXX_NoUnkeyedLiteral struct{}             `json:"-"`
	XXX_sizecache        int32                `json:"-"`
}