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net.go
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net.go
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package util
import (
"fmt"
"net"
"github.com/pkg/errors"
)
// GetLocalIP ...
func GetLocalIP() (string, error) {
addrs, err := net.InterfaceAddrs()
if err != nil {
return "", err
}
for _, addr := range addrs {
if ipnet, ok := addr.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
if ipnet.IP.To4() != nil {
return ipnet.IP.String(), nil
}
}
}
return "", errors.New("unable to determine locla ip")
}
// GetLocalIP ...
func GetLocalMainIP() (string, int, error) {
// UDP Connect, no handshake
conn, err := net.Dial("udp", "8.8.8.8:8")
if err != nil {
return "", 0, err
}
defer conn.Close()
localAddr := conn.LocalAddr().(*net.UDPAddr)
return localAddr.IP.String(), localAddr.Port, nil
}
// GetMacAddrs ...
func GetMacAddrs() (macAddrs []string) {
netInterfaces, err := net.Interfaces()
if err != nil {
fmt.Printf("fail to get net interfaces: %v", err)
return macAddrs
}
for _, netInterface := range netInterfaces {
macAddr := netInterface.HardwareAddr.String()
if len(macAddr) == 0 {
continue
}
macAddrs = append(macAddrs, macAddr)
}
return macAddrs
}
// GetIPs ...
func GetIPs() (ips []string) {
interfaceAddr, err := net.InterfaceAddrs()
if err != nil {
fmt.Printf("fail to get net interface addrs: %v", err)
return ips
}
for _, address := range interfaceAddr {
ipNet, isValidIPNet := address.(*net.IPNet)
if isValidIPNet && !ipNet.IP.IsLoopback() {
if ipNet.IP.To4() != nil {
ips = append(ips, ipNet.IP.String())
}
}
}
return ips
}