Wireshark · Display Filter Reference: MQ Telemetry Transport Protocol for Sensor Networks

Field name	Description	Type	Versions
mqttsn.adv.interv	Advertise Interval	Unsigned integer (16 bits)	2.0.0 to 4.4.2
mqttsn.clean.session	Clean Session	Boolean	2.0.0 to 4.4.2
mqttsn.client.id	Client ID	Character string	2.0.0 to 4.4.2
mqttsn.control.info	Control	Unsigned integer (8 bits)	2.0.0 to 4.4.2
mqttsn.dup	DUP	Boolean	2.0.0 to 4.4.2
mqttsn.gw.addr	Gateway Address	Character string	2.0.0 to 4.4.2
mqttsn.gw.id	Gateway ID	Unsigned integer (8 bits)	2.0.0 to 4.4.2
mqttsn.keep.alive	Keep Alive	Unsigned integer (16 bits)	2.0.0 to 4.4.2
mqttsn.msg	Message	Label	2.0.0 to 4.4.2
mqttsn.msg.id	Message ID	Unsigned integer (16 bits)	2.0.0 to 4.4.2
mqttsn.msg.len	Message Length	Unsigned integer (16 bits)	2.0.0 to 4.4.2
mqttsn.msg.type	Message Type	Unsigned integer (8 bits)	2.0.0 to 4.4.2
mqttsn.protocol.id	Protocol ID	Unsigned integer (8 bits)	2.0.0 to 4.4.2
mqttsn.pub.msg	Message	Character string	2.0.0 to 4.4.2
mqttsn.qos	QoS	Unsigned integer (8 bits)	2.0.0 to 4.4.2
mqttsn.radius	Broadcast Radius	Unsigned integer (8 bits)	2.0.0 to 4.4.2
mqttsn.retain	Retain	Boolean	2.0.0 to 4.4.2
mqttsn.return.code	Return Code	Unsigned integer (8 bits)	2.0.0 to 4.4.2
mqttsn.sleep.timer	Sleep Timer	Unsigned integer (16 bits)	2.0.0 to 4.4.2
mqttsn.topic	Topic Name	Character string	2.0.0 to 4.4.2
mqttsn.topic.id	Topic ID	Unsigned integer (16 bits)	2.0.0 to 4.4.2
mqttsn.topic.id.type	Topic ID Type	Unsigned integer (8 bits)	2.0.0 to 4.4.2
mqttsn.topic.name.or.id	Topic Name/ID	Character string	2.0.0 to 4.4.2
mqttsn.will	Will	Boolean	2.0.0 to 4.4.2
mqttsn.will.msg	Will Message	Character string	2.0.0 to 4.4.2
mqttsn.will.topic	Will Topic	Character string	2.0.0 to 4.4.2
mqttsn.wireless.node.id	Wireless Node ID	Unsigned integer (16 bits)	2.0.0 to 4.4.2