package util import ( "net" "strconv" "strings" "github.com/chrislusf/seaweedfs/weed/glog" ) func DetectedHostAddress() string { netInterfaces, err := net.Interfaces() if err != nil { glog.V(0).Infof("failed to detect net interfaces: %v", err) return "" } if v4Address := selectIpV4(netInterfaces, true); v4Address != ""{ return v4Address } if v6Address := selectIpV4(netInterfaces, false); v6Address != ""{ return v6Address } return "localhost" } func selectIpV4(netInterfaces []net.Interface, isIpV4 bool) string { for _, netInterface := range netInterfaces { if (netInterface.Flags & net.FlagUp) == 0 { continue } addrs, err := netInterface.Addrs() if err != nil { glog.V(0).Infof("get interface addresses: %v", err) } for _, a := range addrs { if ipNet, ok := a.(*net.IPNet); ok && !ipNet.IP.IsLoopback() { if isIpV4 { if ipNet.IP.To4() != nil { return ipNet.IP.String() } } else { if ipNet.IP.To16() != nil { return ipNet.IP.String() } } } } } return "" } func JoinHostPort(host string, port int) string { portStr := strconv.Itoa(port) if strings.HasPrefix(host, "[") && strings.HasSuffix(host, "]") { return host + ":" + portStr } return net.JoinHostPort(host, portStr) }