http-v2.go

c := &http.Client{
    Transport: &http.Transport{
        Dial: (&net.Dialer{
            Timeout:   30 * time.Second,
            KeepAlive: 30 * time.Second,
        }).Dial,
        TLSHandshakeTimeout:   10 * time.Second,
        ResponseHeaderTimeout: 10 * time.Second,
        ExpectContinueTimeout: 1 * time.Second,
    },
}

req, _:= http.NewRequest("GET", "https://www.google.com", nil)

resp, err := c.Do(req)