Send 'Retry-After' to comply with RFC6585.

vendor/github.com/vulcand/oxy/utils/handler.go

@@ -8,14 +8,16 @@ import (
 	log "github.com/sirupsen/logrus"
 )
 
+// ErrorHandler error handler
 type ErrorHandler interface {
 	ServeHTTP(w http.ResponseWriter, req *http.Request, err error)
 }
 
+// DefaultHandler default error handler
 var DefaultHandler ErrorHandler = &StdHandler{}
 
-type StdHandler struct {
-}
+// StdHandler Standard error handler
+type StdHandler struct{}
 
 func (e *StdHandler) ServeHTTP(w http.ResponseWriter, req *http.Request, err error) {
 	statusCode := http.StatusInternalServerError
@@ -33,6 +35,7 @@ func (e *StdHandler) ServeHTTP(w http.ResponseWriter, req *http.Request, err err
 	log.Debugf("'%d %s' caused by: %v", statusCode, http.StatusText(statusCode), err)
 }
 
+// ErrorHandlerFunc error handler function type
 type ErrorHandlerFunc func(http.ResponseWriter, *http.Request, error)
 
 // ServeHTTP calls f(w, r).