“:pool_size => 1” not use same connection

[tablecell]

serv.rb

require "socket"
require 'time'
server = TCPServer.open("127.0.0.1", 80)

loop {
  Thread.start(server.accept) do |client| # new thread  if  connection  accepted
    puts "connected", client
    loop { #for established connection   loop gets/write forever 
      lines = []
      while line = client.gets and line !~ /^\s*$/
       lines << line.chomp
      end
      puts lines
      puts Thread.current
t = Time.now.utc
      echo = "Your conn is serve by thread %s" % Thread.current   # echo Thread.current to client
      headers = ["HTTP/1.0 200 OK",
                 "Server: ruby multi thread server",
                 'Connection: Keep-Alive',
                 "Content-Type: text/plain; charset=utf-8",
		 "Date: " << Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S GMT"),
       		 "Age: 267230",
                 "Content-Length: #{echo.length}\r\n\r\n"].join("\r\n")
      puts "%d +  %d  = %d" % [headers.size , echo.size,headers.size + echo.size]
      client.write headers   #send to the client
      client.write echo
      # loop  client gets not close conn
    }
  end
}

client.rb

require "httparty"
require "persistent_httparty"

class Twitter
  include HTTParty
  persistent_connection_adapter :name => "my_cool_rest_client",
                                :pool_size => 1,
                                :idle_timeout => 10,
                                :keep_alive => 30
  base_uri "localhost"

  format :html  
  def self.query
    get("/")
  end
end

10.times do
  resp = Twitter.query
  resp.headers.each do |k, v|
    print k.capitalize, ": ", v, "\n"
  end
  puts 
  puts resp.body
  sleep 2
end

```
client recieve  different Thread.current ,that means   “:pool_size => 1”  not use same connection