# /data/ngin/shared/proxy/proxy.rb
require 'em-proxy'

Proxy.start(:host => "0.0.0.0", :port => EMPROXY_PORT) do |conn|
  conn.server :self, :host => '127.0.0.1', :port => NGINX_PORT
  conn.server :proxy, :host => PROXY_IP, :port => PROXY_PORT
  conn.on_data do |data|
    data
  end
  conn.on_response do |server, resp|
    resp if server == :self
  end
end