title: bokeh server: get client IP adress without embedding in Django/Flask/
body: <p>In a bokeh server app i'd like to read the client IP adress and depending on that adress adjust the returned content.
  Is this possible without embedding bokeh into django/flask/..?</p>
  
  <p>Thanks</p>
  
  <p>Update: Like proposed a GitHub issue is created <a href="https://github.com/bokeh/bokeh/issues/9252" rel="nofollow noreferrer">here</a>.</p>