The MQTT agent generates Error, PublishAck and SubscribeResponse while it receives Publish, Subscribe and Unsubscribe.
Error UDRs
The following fields are included in the Error UDRs:
Field | Description |
|---|---|
| affectedUDR (DRUDR) | This field stores the unprocessed UDR in case of an error in processing by the MQTT agent. |
message (string) | This field contains the error message from the MQTT agent. |
OriginalData (bytearray) | This field contains the original data in bytearray format. |
PublishAck UDRs
The following fields are included in the PublishAck UDRs:
Field | Description |
|---|---|
broker (string) | This field contains the broker connection details in the following format: tcp://<ip address/hostname>:<port> |
complete (boolean) | This field contains a value from the broker that indicates if the topic has been completely published. |
messageID (int) | This field contains the identifier for the message. |
topics (list<string>) | This field contains the list of subscribed topics for this particular broker. |
OriginalData (bytearray) | This field contains the original data in bytearray format. |
SubscribeResponse UDRs
The following fields are included in the SubscribeResponse UDRs:
Field | Description |
|---|---|
| broker (string) | This field contains the broker connection details in the following format: tcp://<ip address/hostname>:<port> |
| data (bytearray) | This field contains the data sent by the MQTT broker in bytearray format. |
| id (int) | This field contains the identifier for the message. |
| qos (int) | This field indicates the QoS value for this particular message. |
| topic (string) | This field indicates the MQTT topic for this particular message |
OriginalData (bytearray) | This field contains the original data in bytearray format. |
Publish UDRs
The following fields are included in the Publish UDRs:
Field | Description |
|---|---|
data (bytearray) | This field contains the data sent to the MQTT broker in bytearray format. |
messageID (int) | This field contains the identifier for the message. |
qos (int) | This field indicates the QoS value for this particular message. |
retain (boolean) | This field indicates if retain is set to true or false. |
topic (string) | This field indicates the MQTT topic for this particular message |
OriginalData (bytearray) | This field contains the original data in bytearray format. |
Subscribe UDRs
The following fields are included in the Subscribe UDRs:
| Field | Description |
|---|---|
qos (list<int>) | This field contains a list of QoS values for the topics in the UDR. |
topics (list<string>) | This field contains a list of topics for the UDR |
OriginalData (bytearray) | This field contains the original data in bytearray format. |
Unsubscribe UDRs
The following fields are included in the Unsubscribe UDRs:
| Field | Description |
|---|---|
topics (list<string>) | This field contains a list of topics for the UDR |
OriginalData (bytearray) | This field contains the original data in bytearray format. |