Why cookies are read through time?

Question

go

Declared cookies in a global variable.
Further in one of the routes I send it to the client; and then I read it.
And in another route, I just read.
(Handling of -err errors is omitted here.)

var ck = http.Cookie {
        Name: "sessID",
        Value: "token_Sess",
}

func main() {
    http.HandleFunc("/login", func(w http.ResponseWriter, r *http.Request) {
        http.SetCookie(w, &ck)

        ck_Read, err := r.Cookie("sessID")
        ck_Value := ck_Read.Value
        log.Println("Значение куки _sessID_ по маршруту /login:", ck_Value)
        return
    })

    http.HandleFunc("/contacts", func(w http.ResponseWriter, r *http.Request) {
        coo, err := r.Cookie("sessID")
        coo_Value := coo.Value
        log.Println("Значение куки _sessID_ по маршруту /contacts:", coo_Value)
        return
    })
}

Why is the cookie read in the first route, but not in the second one (the error handler reports that there are no cookies)?

Answer 1

var ck = http.Cookie {
        Name: "sessID",
        Value: "token_Sess",
        Path: "/",
}