Get client real ip

getRealIP.go

package main

import (
	"fmt"
	"github.com/Tomasen/realip"
	"log"
	"net/http"
)

//CheckClientIP show real client IP
func CheckClientIP(w http.ResponseWriter, r *http.Request) {
	clientIP := realip.FromRequest(r)
	fmt.Fprintf(w, "Hello, your ip is: %s", clientIP)
}

func main() {
	fmt.Println("START")

	http.HandleFunc("/", CheckClientIP)

	log.Fatal(http.ListenAndServe(":80", nil))
}