golang ListenAndServeTLS

[Roy20141120]

func main() {

	http.HandleFunc("/do", func(w http.ResponseWriter, r *http.Request) {
		fmt.Println( "do")
	})

	err := http.ListenAndServeTLS(":9000", "key.pem", "cert.pem", nil)
	if err != nil {
		panic(err)
	}
}

1# using browser open https://localhost:9000/do
2# browser remind "not safe connection:NET::ERR_CERT_AUTHORITY_INVALID"
3# how to handle this except importing the ca cert in client?