Listen on second port and redirect to main

server/new.go

@@ -9,10 +9,12 @@ import (
 
 func New() *Server {
 	port := config.GetPort()
+	altport := config.GetAltPort()
 	r, b := config.GetRate()
 	return &Server{
 		db:      storage.NewMap(),
 		addr:    port,
+		altaddr: altport,
 		limiter: rate.NewLimiter(rate.Limit(r), b),
 	}
 }