title: What are the valid values for a django URL field?
body: <p>What are the valid values for a django URL field?</p>
  
  <p>Is it only for http URL resources or does it support a wider range. eg ssh, rsync, git etc.</p>
  
  <p>I tried putting what I considered to be valid Git URL and it failed.</p>
  
  <p>Because I am not using the verify_exists which is being deprecated it doesn't matter whether the resource exists or not.</p>