add port range support for service

internal/net/addr.go

@@ -7,6 +7,84 @@ import (
 	"strings"
 )
 
+func ParseInterfaceAddr(ifceName, network string) (ifce string, addr []net.Addr, err error) {
+	if ifceName == "" {
+		addr = append(addr, nil)
+		return
+	}
+
+	ip := net.ParseIP(ifceName)
+	if ip == nil {
+		var ife *net.Interface
+		ife, err = net.InterfaceByName(ifceName)
+		if err != nil {
+			return
+		}
+		var addrs []net.Addr
+		addrs, err = ife.Addrs()
+		if err != nil {
+			return
+		}
+		if len(addrs) == 0 {
+			err = fmt.Errorf("addr not found for interface %s", ifceName)
+			return
+		}
+		ifce = ifceName
+		for _, addr_ := range addrs {
+			if ipNet, ok := addr_.(*net.IPNet); ok {
+				addr = append(addr, ipToAddr(ipNet.IP, network))
+			}
+		}
+	} else {
+		ifce, err = findInterfaceByIP(ip)
+		if err != nil {
+			return
+		}
+		addr = []net.Addr{ipToAddr(ip, network)}
+	}
+
+	return
+}
+
+func ipToAddr(ip net.IP, network string) (addr net.Addr) {
+	port := 0
+	switch network {
+	case "tcp", "tcp4", "tcp6":
+		addr = &net.TCPAddr{IP: ip, Port: port}
+		return
+	case "udp", "udp4", "udp6":
+		addr = &net.UDPAddr{IP: ip, Port: port}
+		return
+	default:
+		addr = &net.IPAddr{IP: ip}
+		return
+	}
+}
+
+func findInterfaceByIP(ip net.IP) (string, error) {
+	ifces, err := net.Interfaces()
+	if err != nil {
+		return "", err
+	}
+	for _, ifce := range ifces {
+		addrs, _ := ifce.Addrs()
+		if len(addrs) == 0 {
+			continue
+		}
+		for _, addr := range addrs {
+			ipAddr, _ := addr.(*net.IPNet)
+			if ipAddr == nil {
+				continue
+			}
+			// logger.Default().Infof("%s-%s", ipAddr, ip)
+			if ipAddr.IP.Equal(ip) {
+				return ifce.Name, nil
+			}
+		}
+	}
+	return "", nil
+}
+
 // AddrPortRange is the network address with port range supported.
 // e.g. 192.168.1.1:0-65535
 type AddrPortRange string