[Medium] exploring_net_protocol_5.rb

require 'net/http'
 
class Api
  HOST = 'localhost'
  PORT = 3000
 
  def initialize
    @http = Net::HTTP.new(HOST, PORT)
  end
 
  def get
    request nil, 'GET'
  end
 
  def add(data)
    request data, 'ADD'
  end
 
  def del(data)
    request data, 'DEL'
  end
 
  private
 
  def request(data, cmd)
    Net::HTTP::Post
      .new('/', 'Content-Type': 'application/json')
      .tap { |req| req.body = "#{data},#{cmd}" }
      .yield_self(&@http.method(:request))
      .yield_self(&:body)
  end
end
 
client = Api.new
client.get
client.add('12313131')
client.add('msg')
client.del('msg')