func postxml() {
	body := "<request> <parameters> <email>test@test.com</email> <password>test</password> </parameters> </request>"

	client := &http.Client{}
	// build a new request, but not doing the POST yet
	req, err := http.NewRequest("POST", "http://httpbin.org/post", bytes.NewBuffer([]byte(body)))
	if err != nil {
		fmt.Println(err)
	}
	// you can then set the Header here
	// I think the content-type should be "application/xml" like json...
	req.Header.Add("Content-Type", "application/xml; charset=utf-8")
	// now POST it
	resp, err := client.Do(req)
	if err != nil {
		fmt.Println(err)
	}
	defer func() { _ = resp.Body.Close() }()

	content, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(content))

}