class Rack::TempfileReaper

groups.google.com/forum/#!searchin/rack-devel/temp/rack-devel/brK8eh-MByw/sw61oJJCGRMJ<br>Ideas/strategy based on posts by Eric Wong and Charles Oliver Nutter
Middleware tracks and cleans Tempfiles created throughout a request (i.e. Rack::Multipart)

def call(env) 

def call(env)
  env[RACK_TEMPFILES] ||= []
  begin
    _, _, body = response = @app.call(env)
  rescue Exception
    env[RACK_TEMPFILES]&.each(&:close!)
    raise
  end
  response[2] = BodyProxy.new(body) do
    env[RACK_TEMPFILES]&.each(&:close!)
  end
  response
end

def initialize(app) 

def initialize(app)
  @app = app
end