c := http.Client{
Transport: &http.Transport{
Dial: func(netw, addr string) (net.Conn, error) {
deadline := time.Now().Add(25 * time.Second)
c, err := net.DialTimeout(netw, addr, time.Second*20)
if err != nil {
return nil, err
}
c.SetDeadline(deadline)
return c, nil
},
},
}
参考资料：
http://www.reddit.com/r/golang/comments/121lc9/changing_httpget_timeout_and_not_having_too_many
http://www.reddit.com/r/golang/comments/10awvj/timeout_on_httpget/