Imports github.com/containous/traefik/log github.com/containous/traefik/middlewares github.com/containous/traefik/types github.com/sirupsen/logrus github.com/urfave/negroni github.com/vulcand/oxy/utils Standard library imports bufio bytes context fmt io net net/http net/url os path/filepath regexp strings sync sync/atomic time