Introduce default hostname and default port for any case

config/server.go

@@ -2,13 +2,21 @@ package config
 
 import (
 	"os"
+	"strconv"
 
 	"github.com/imdario/mergo"
 )
 
 const (
+	// DefaultServerHostname returns the default hostname which is 127.0.0.1
+	DefaultServerHostname = "127.0.0.1"
+	// DefaultServerPort returns the default port which is 8080
+	DefaultServerPort = 8080
+)
+
+var (
 	// DefaultServerAddr the default server addr which is: 127.0.0.1:8080
-	DefaultServerAddr = "127.0.0.1:8080"
+	DefaultServerAddr = DefaultServerHostname + ":" + strconv.Itoa(DefaultServerPort)
 )
 
 // ServerName the response header of the 'Server' value when writes to the client

http.go

@@ -303,6 +303,8 @@ func (s *Server) VirtualHostname() (hostname string) {
 	hostname = s.Config.ListeningAddr
 	if idx := strings.IndexByte(hostname, ':'); idx > 1 { // at least after second char
 		hostname = hostname[0:idx]
+	} else {
+		hostname = config.DefaultServerHostname
 	}
 	return
 }
@@ -378,7 +380,7 @@ func (s *Server) Open() error {
 	//check if contains hostname, we need the full host, :8080 should be : 127.0.0.1:8080
 	if portIdx := strings.IndexByte(a, ':'); portIdx == 0 {
 		// then the : is the first letter, so we dont have setted a hostname, lets set it
-		s.Config.ListeningAddr = "127.0.0.1" + a
+		s.Config.ListeningAddr = config.DefaultServerHostname + a
 	}
 
 	if s.Config.Mode > 0 {