Description of demos used to illustrate various functionalities of MQTT libraries. They demonstrate the use of MQTT APIs to establish an MQTT session, subscribe to a topic filter, publish to a topic, receive incoming publishes, unsubscribe from a topic and disconnect the MQTT session.

The following demos are provided:

MQTT Basic TLS Demo
Demo of an MQTT application that establishes a TLS connection with server-only authentication, and uses QoS 2 level of communication with broker.
MQTT Mutual Authentication Demo
Demo of an MQTT application that establishes a TLS connection with both server and client authentication, and uses QoS 1 level of communication with broker.
MQTT Plaintext Demo
Demo of an MQTT application that establishes a plaintext (no encryption) TCP connection with the server, and uses QoS 0 level of communication with broker.
MQTT Serializer Demo
Demo of an MQTT application using only the MQTT serializer API to communicate at QoS 0 level with broker over a plaintext (no encryption) TCP connection.
MQTT Subscription Manager Demo
Demo of an MQTT application that subscribes to multiple topic filters using a subscription manager to manage multiple subscriptions, register different callbacks for each subscription, and handle wildcard topics. It establishes a TLS connection with server-only authentication, and communicates at QoS 1 level with the broker.
AWS IoT Device Shadow Demo
Demo application that uses the AWS IoT Device Shadow library, MQTT Client library, and JSON library to interact with the AWS IoT Device Shadow service.