Research Article

MQTT Security: A Novel Fuzzing Approach

Table 3

Types of MQTT messages.

PacketDescription

CONNECTConnect to the server
CONNACKAck of connect msg
PUBLISHPublish a topic
PUBACKAck of publish msg
PUBRECPublication received
PUBRELPublication sent
PUBCOMPPublication completed
SUBSCRIBEClient subscription
SUBACKAck of subscribe msg
UNSUBSCRIBEUnsubscribe petition
UNSUBACKAck of unsubscribe msg