add a warning in case of transient error

command/serve.go

@@ -165,7 +165,7 @@ func (ph *ProxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		for containerName, mr = range containerMethodRegex {
 			resolvedIPs, err := net.LookupIP(containerName)
 			if err != nil {
-				log.Err(err).Send()
+				log.Warn().Err(err).Msg("this error may be transient due to the unavailability of one of the services")
 			}
 			for _, resolvedIP := range resolvedIPs {
 				if resolvedIP.Equal(ip) {
@@ -206,33 +206,6 @@ func (s serve) action(ctx context.Context, command *cli.Command) error {
 	if err != nil {
 		return err
 	}
-	/*
-		requests := command.StringSlice(addRequestsFlagName)
-		log.Info().Msgf("%d", len(requests))
-		if len(requests) > 0 {
-			clear(containerMethodRegex)
-			for _, request := range requests {
-				// An applicator is a container name/HTTP method pair e.g., nginx(GET).
-				// The following regex extracts this applicator and the associated URL regex.
-				aur := applicatorURLRegex.FindString(request)
-				if aur == "" {
-					// If we are here, it means that user set a wildcard (kinda) applicator e.g., GET,POST:URL_REGEX.
-					// In its extended form, this applicator can be read as follows: *(GET,POST):URL_REGEX.
-					methods, urlRegex, ok := strings.Cut(request, ":")
-					if !ok { // || methods == ""?
-						return errors.New("HTTP method(s) must be specified before ':'")
-					}
-					if err = registerMethodRegex("*", urlRegex, strings.Split(methods, ",")); err != nil {
-						return err
-					}
-				}
-				applicator, urlRegex, _ := strings.Cut(aur, ":")
-				if err = registerMethodRegex(containerNameRegex.FindString(applicator), urlRegex, httpMethodsRegex.FindAllString(applicator, -1)); err != nil {
-					return err
-				}
-			}
-		}
-	*/
 	var l net.Listener
 	l, err = net.Listen("tcp", ap.srvAddrPort.String())
 	if err != nil {