MQTT Client library for ESP8266 Arduino

This is a fork of tuanpmt/ESP8266MQTTClient.

This is an MQTT client library for ESP8266, using mqtt_msg package from MQTT client library for Contiki for use with the ESP8266 NON-OS SDK esp_mqtt.

Features:

• Supports subscribing, publishing, authentication, will messages, keep alive pings and all 3 QoS levels (it should be a fully functional client).

Requirements

• ESP8266WiFi
• WiFiClientSecure

Status

• Supports all 3 qos types (0, 1, 2) and outbox
• Supports MQTT over TCP, TLS, Websocket and Secure Websocket

MQTT URI Scheme

• mqtt://hostname[:port]
  • mqtt for MQTT over TCP
  • mqtts for MQTT over TLS
  • ws for MQTT over Websocket
  • wss for MQTT over Secure Websocket
  • port is 1883 by default
  • client_id is "ESP_" + ESP.getChipId() by default
• Example:
  • Full mqtt://test.mosquitto.org:1883
  • Websocket ws://test.mosquitto.org:1883/mqtt
  • Minimal mqtt://test.mosquitto.org (port = 1883)

API

Setup

• bool begin(String uri);
• bool begin(String uri, String username, String password);
• bool begin(String uri, String client_id);
• bool begin(String uri, String client_id, String username, String password);
• bool begin(String uri, int keepalive, bool clean_session);
• bool begin(String uri, String username, String password, int keepalive, bool clean_session);
• bool begin(String uri, String client_id, int keepalive, bool clean_session);
• bool begin(String uri, String client_id, String username, String password, int keepalive, bool clean_session);
• bool begin(String uri, LwtOptions lwt);
• bool begin(String uri, String username, String password, LwtOptions lwt);
• bool begin(String uri, String client_id, LwtOptions lwt);
• bool begin(String uri, String client_id, String username, String password, LwtOptions lwt);
• bool begin(String uri, LwtOptions lwt, int keepalive, bool clean_session);
• bool begin(String uri, String username, String password, LwtOptions lwt, int keepalive, bool clean_session);
• bool begin(String uri, String client_id, LwtOptions lwt, int keepalive, bool clean_session);
• bool begin(String uri, String client_id, String username, String password, LwtOptions lwt, int keepalive, bool clean_session);

Events

• void onConnect(THandlerFunction fn);
• void onDisconnect(THandlerFunction fn);
• void onSubscribe(THandlerFunction_PubSub fn);
• void onPublish(THandlerFunction_PubSub fn);
• void onData(THandlerFunction_Data fn);

Pub/Sub

• int subscribe(String topic);
• int subscribe(String topic, uint8_t qos);
• int publish(String topic, String data);
• int publish(String topic, String data, int qos, int retain);

License

Copyright (c) 2016 Tuan PM (https://twitter.com/tuanpmt)

ESP8266 port (c) 2016 Ivan Grokhotkov (ivan@esp8266.com)

This project uses the Apache 2.0 License. See the file called LICENSE.