Parses the payload of an MQTT SUBACK packet that contains status codes corresponding to topic filter subscription requests from the original subscribe packet.
Each return code in the SUBACK packet corresponds to a topic filter in the SUBSCRIBE Packet being acknowledged. The status codes can be one of the following:
[in] | pSubackPacket | The SUBACK packet whose payload is to be parsed. |
[out] | pPayloadStart | This is populated with the starting address of the payload (or return codes for topic filters) in the SUBACK packet. |
[out] | pPayloadSize | This is populated with the size of the payload in the SUBACK packet. It represents the number of topic filters whose SUBACK status is present in the packet. |
Example