ruby-em-mqtt

This gem adds MQTT (Message Queue Telemetry Transport) protocol support to EventMachine, an event-processing library for Ruby.

Installing

You may get the latest stable version from rubygems.org:

$ gem install em-mqtt

It depends upon the mqtt gem to perform packet parsing and serialising.

Synopsis

require 'rubygems'
require 'em/mqtt'

# Publish example
EventMachine.run do
  c = EventMachine::MQTT::ClientConnection.connect('test.mosquitto.org')
  EventMachine::PeriodicTimer.new(1.0) do
    puts "-- Publishing time"
    c.publish('test', "The time is #{Time.now}")
  end
end

# Subscribe example
EventMachine.run do
  EventMachine::MQTT::ClientConnection.connect('test.mosquitto.org') do |c|
    c.subscribe('test')
    c.receive_callback do |message|
      p message
    end
  end
end

Resources

• MQTT Homepage: http://www.mqtt.org/
• GitHub Project: http://github.com/njh/ruby-em-mqtt
• Documentation: http://rubydoc.info/gems/em-mqtt/frames

License

The em-mqtt gem is licensed under the terms of the MIT license. See the file LICENSE for details.

Contact

• Author: Nicholas J Humfrey
• Email: njh@aelius.com
• Home Page: http://www.aelius.com/njh/