gistfile1.rb

require "bundler/setup"
require "rack/streaming_proxy"

warn "Sleeping for a bit before starting gimme."

sleep 3

warn "Starting gimme."

nport = 2727
nenv  = ENV.to_hash.merge "PORT" => nport.to_s
npid  = Process.spawn nenv, "coffee index.coffee", err: :out, out: $stdout

sleep 3

warn "Gimme should be started by now."

Signal.trap "QUIT" do
  warn "SIGQUIT received, killing gimme."
  Process.kill "QUIT", npid
end

use Rack::StreamingProxy do |req|
  "http://localhost:#{nport}#{req.path}"
end

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