class Rack::CommonLogger

cause the request not to be logged.
exceptions raised during the sending of the response body will
the logging happens after the request body has been fully sent, any
they should be loaded after this middleware. Additionally, because
will not be logged, so if exception handling middleware are used,
returned. Note that if the app raises an exception, the request
Log all requests in common_log format after a response has been

def call(env)
  began_at = Utils.clock_time
  status, headers, body = response = @app.call(env)
  response[2] = BodyProxy.new(body) { log(env, status, headers, began_at) }
  response
end