http2: server sent GOAWAY and closed the connection; LastStreamID=1999

I have for loop in which I calling that function that takes response from osrm server, after some time ioutil.ReadAll(resp.Body) returns err that prints http2: server sent GOAWAY and closed the connection; LastStreamID=1999, ErrCode=NO_ERROR, debug=""

func RequestGET(req string) []byte {

    reqst, err := http.NewRequest("GET", req, nil)
    client := &http.Client{}
    resp, err := client.Do(reqst)
    if err != nil {
        panic(err)
    }
    resp_data, err := ioutil.ReadAll(resp.Body)
    resp.Body.Close()
    if err != nil {
        fmt.Println(err)
    }
    return resp_data
}

Isn't resp.Body.Close() closes a connection? I expected to get every time a new one.