Post HTTP JSON data using Ruby builtin HTTP library

post-json.rb

# copied from https://stackoverflow.com/questions/2024805/ruby-send-json-request

require 'net/http' #net/https does not have to be required anymore
require 'json'
require 'uri'

uri = URI('https://your.secure-url.com')
Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
  request = Net::HTTP::Post.new(uri, 'Content-Type' => 'application/json')
  request.body = {parameter: 'value'}.to_json
  response = http.request request # Net::HTTPResponse object
  puts "response #{response.body}"
end