This simple web application provides a bridge between HTTP and MQTT using a RESTish interface. It is possible to GET, POST, PUT and DELETE retained messages on a remote MQTT server.

Install bundler:

sudo gem install bundler

Install the other gem dependencies:

bundle install

Run the local web server:

bundle exec rackup -p 1234

You can then open the bridge in your browser:

http://localhost:1234/

To connect to your own MQTT server:

Edit the first few lines of `mqtt-http-bridge.rb` to match your server.

If you want to use a different port than the default 1883, add `:remote_port => [PORT NUMBER],` under the line with the IP address. Do not put the port number in quotation marks.

To get a retained value for a topic:

curl http://localhost:1234/test

To publish to a topic (retained):

curl -X PUT --data-binary "Hello World" http://localhost:1234/test

To publish to a topic (non-retained):

curl -X POST --data-binary "Hello World" http://localhost:1234/test

To delete the retained value for a topic:

curl -X DELETE http://localhost:1234/test

The ruby mqtt-http-bridge is licensed under the terms of the MIT license. See the file LICENSE for details.

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