puma_middleware.rb

require 'gctools/oobgc'

module GC
  module OOB
    module PumaMiddleware
      def self.new(app)
        ObjectSpace.each_object(Puma::Server) do |s|
          s.extend(self)
        end
        app
      end
      def process_client(client, buffer)
        super(client, buffer) # Puma::Server#process_client
        GC::OOB.run
      end
    end
  end
end