V2

[256dpi]

Almost complete! ❤️

Changes so far:

• Removed YunMQTTClient (see Remove special Yun client #57)
• Ported MQTTClient to lwmqtt
• Added clearWill() function
• Added qos level and retained flag to setWill() (see Support for QoS1 and QoS2 publishing/subscribing #49)
• Added qos level to subscribe() (see Support for QoS1 and QoS2 publishing/subscribing #49)
• Added qos level and retained flag to publish() (see Support for QoS1 and QoS2 publishing/subscribing #49)
• Added error and return code getters (see Make CONNACK packet's return code available to application #64)
• Removed publish method with MQTTMessage struct parameter
• Added AdvancedMQTTClient<256> template to allow simple buffer size override. (see Let users select from different buffer sizes. #30)
• Callbacks can be registered using onMessage() (see Allow dynamic setting of message received handler #55)
• An Advanced callbaback can be registered using onMessageAdvanced() (see Change messageReceived signature? #38)
• Replaced all string pointers with array notation.
• Added more subscribe() and publish() variations.
• Remove c++ templates and let buffer size configuratio happen in the constructor.
• Pass String objects as reference to most functions.
• Add an Arduino Yun SSL example.

Missing:

• Documentation or fix of messages received during subscribe, publish and unsubscribe. Should we really implement somekind of queue to guarantee proper dispatch?

Testing:

• Arduino Yun & Yun-Shield
• Arduino Yun & Yun-Shield SSL
• Arduino Ethernet Shield
• Arduino WiFi Shield
• Adafruit HUZZAH ESP8266
• Adafruit HUZZAH ESP8266 SSL
• Arduino/Genuino WiFi101 Shield
• Arduino/Genuino WiFi101 Shield SSL
• ESP32 Development Board
• ESP32 Development Board SSL

Todo:

• Update library.properties
• Update GH repo subtitle (lwmqtt)

[256dpi]

@sandeepmistry How can I install/update the certificates on a Yun?

[sandeepmistry]

Hi @256dpi,

If you update to the latest Yun image (see https://www.arduino.cc/en/Tutorial/YunSysupgrade), you can add certificates in /etc/ssl/certs/. However, you will also need a symlink for the hash.

I think this is the guide to try: https://wiki.openwrt.org/doc/howto/wget-ssl-certs

cc/ @facchinm

[teliot]

is this v2 branch based on the paho library?

[256dpi]

@teliot It is based on lwmqtt.

[256dpi]

I just released 2.0.0. 🎉 Thanks for your support and feedback!