GO获取客户端IP地址

要优先使用XForwardedFor

哦看错了
fmt.Println（r.RemoteAddr) 
是可以获取IP的 
就是后面带个 端口 有点别扭 怎么去掉呢

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
}