golang中服务器与客户端传输之间的关系

Question

I have both - a client and a server in a one program. With a function func Get(url string) ([]byte, error) i make tons of requests to other server and my server handles one per second request from other clients. The function for request is:

var transport = &http.Transport{}
func Get(url string) ([]byte, error) {
    req, err := http.NewRequest("GET", url, nil)
    if err != nil {
        return nil, err
    }

    var client = &http.Client{
        Transport: transport,
        Timeout:   15 * time.Second,
    }

    resp, err := client.Do(req)
    if resp != nil && resp.Body != nil {
        defer resp.Body.Close()
    }

    if err != nil {
        if resp != nil && resp.Body != nil {
            io.Copy(ioutil.Discard, resp.Body)
        }

        return nil, err
    }

    data, err := ioutil.ReadAll(resp.Body)
    return data, err
}

and the server is:

func homePage(w http.ResponseWriter, r *http.Request) {
    fmt.Fprint(w, "Hello")
}

http.HandleFunc("/", homePage)
http.ListenAndServe(":9002", nil)

So, the question is - why my server start waiting, while my clients send all their requests to other server, before it start handling other client's request? What do i miss? CPU is ok, memory is ok, bandwidth is ok.