http.go
func HTTPPostForm(url string, data url.Values) (statusCode int, statusText string, err error) {
	request, err := http.NewRequest("POST", url, strings.NewReader(data.Encode()))
	if err != nil {
		return 0, "", err
	}
	request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	response, err := http.DefaultClient.Do(request)
	if err != nil {
		return 0, "", err
	}
	return response.StatusCode, response.Status, nil
}
func HTTPPostForm(url string, data url.Values) (statusCode int, statusText string, err error) {
	request, err := http.NewRequest("POST", url, strings.NewReader(data.Encode()))
	if err != nil {
		return 0, "", err
	}
	request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	response, err := http.DefaultClient.Do(request)
	if err != nil {
		return 0, "", err
	}
	return response.StatusCode, response.Status, nil
}
// HTTPPostForm performs a HTTP POST request with data as application/x-www-form-urlencoded