gistfile1.txt

func write(localFile, remoteFile string) (err error) {
	buf := bytes.NewBuffer([]byte{})
	
	mw := multipart.NewWriter(buf)
	
	if err = mw.WriteField("field", value); err != nil {
		return
	}
	
	pw, err := mw.CreateFormField(localFile)
	if err != nil {
		return
	}

	lf, err := os.Open(localFile)
	if err != nil {
		return
	}

	_, err = io.Copy(pw, lf)
	if err != nil {
		return
	}

	err = mw.Close()
	if err != nil {
		return
	}

	// path package messes up the protocol
	fsurl := url + "/" + remoteFile
	fmt.Println("about to POST to", fsurl)

	response, err := http.Post(fsurl, "mime", buf)
	if err != nil {
		return
	}
	_ = response

	return
}