OK, net/http!

ok-http.rb

require 'json'
require 'net/http'
require 'thread'
require 'openssl'
require 'uri'

module Okhttp
  class Conn

    def initialize(url)
      @url = URI(url)
      @conn_mutex = Mutex.new
    end

    def post(path, body)
      make_req(Net::HTTP::Post, path, body)
    end

    def put(path, body)
      make_req(Net::HTTP::Put, path, body)
    end

    def get(path, param={})
      path = path + "?" + URI.encode_www_form(params) unless params.empty?
      make_req(Net::HTTP::Get, path)
    end

    def delete(path)
      make_req(Net::HTTP::Delete, path)
    end

    private

    def make_req(type, path, body=nil)
      conn do |c|
        req = type.new([@url.request_uri, path].compact.join)
        req['Content-Type'] = 'application/json'
        req.body = body
        resp = c.request(req)
        [Integer(resp.code), resp.to_hash, resp.body]
      end
    end

    def conn
      @conn ||= establish_conn
      @conn_mutex.synchronize do
        begin
          return yield(@conn)
        rescue => e
          @conn = nil
          raise(e)
        end
      end
    end

    def establish_conn
      Net::HTTP.new(@url.host, @url.port).tap do |c|
        c.open_timeout = timeout
        c.read_timeout = timeout
        c.set_debug_output($stdout) if ENV['DEBUG']
        if @url.scheme == 'https'
          c.use_ssl = true
          c.verify_mode = OpenSSL::SSL::VERIFY_PEER
        end
      end
    end

  end
end

c = Okhttp::Conn.new('https://httpbin.org')
status, headers, body = c.post('/post', JSON.dump({hello: 'world'}))
puts body