/
ip.go
59 lines (50 loc) · 1.21 KB
/
ip.go
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package commutil
import (
"errors"
"github.com/Jecced/go-tools/src/https"
"net"
"net/http"
)
const (
XForwardedFor = "X-Forwarded-For"
XRealIP = "X-Real-IP"
)
// 获取本机内网ip
func GetInternal() (string, error) {
netInterfaces, err := net.Interfaces()
if err != nil {
return "", err
}
for i := 0; i < len(netInterfaces); i++ {
if (netInterfaces[i].Flags & net.FlagUp) != 0 {
addrs, _ := netInterfaces[i].Addrs()
for _, address := range addrs {
if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
if ipnet.IP.To4() != nil {
return ipnet.IP.String(), nil
}
}
}
}
}
return "", errors.New("net.Interfaces failed")
}
// 获取本机公网ip
func GetExternal() (string, error) {
return https.Get("https://myexternalip.com/raw").Send().ReadText()
}
// RemoteIp 返回远程客户端的 IP,如 192.168.1.1
func RemoteIp(req *http.Request) string {
remoteAddr := req.RemoteAddr
if ip := req.Header.Get(XRealIP); ip != "" {
remoteAddr = ip
} else if ip = req.Header.Get(XForwardedFor); ip != "" {
remoteAddr = ip
} else {
remoteAddr, _, _ = net.SplitHostPort(remoteAddr)
}
if remoteAddr == "::1" {
remoteAddr = "127.0.0.1"
}
return remoteAddr
}