c, err := ftp.Dial("ftp.example.org:21", ftp.DialWithTimeout(5*time.Second))
if err != nil {
    log.Fatal(err)
}

err = c.Login("anonymous", "anonymous")
if err != nil {
    log.Fatal(err)
}

// Do something with the FTP conn

if err := c.Quit(); err != nil {
    log.Fatal(err)
}

data := bytes.NewBufferString("Hello World")
err = c.Stor("test-file.txt", data)
if err != nil {
	panic(err)
}

r, err := c.Retr("test-file.txt")
if err != nil {
	panic(err)
}
defer r.Close()

buf, err := ioutil.ReadAll(r)
println(string(buf))