Simple proxy server for developing front-ends for APIs (using rack middleware)

proxy.ru

require 'rack'
require 'rack/proxy' #gem install rack-proxy

class Proxy < Rack::Proxy
    def rewrite_env(env)
        env["HTTP_HOST"] = "my.host.com"
        env["SERVER_PORT"] = "80"
        env
    end
end

#serve static assets, your frontend
use Rack::Static, :urls => {"/" => "index.html"}
use Rack::Static, :urls => ["/css", "/images", "/js"]
run Proxy.new
#thin --rackup proxy.ru start