Rack Proxy with HTTP Basic Authentication

proxy.ru

require 'rubygems'
require 'rack/streaming_proxy'

use Rack::Auth::Basic, "Restricted Area" do |username, password|
  [username, password] == ['user', 'password']
end

use Rack::StreamingProxy do |request|
    if request.path.start_with?("/proxy")
      "http://other.host#{request.path}"
    end
end

run proc{|env| [200, {"Content-Type" => "text/plain"}, ["Running..."]] }