title: How to HTTP 'Keep-Alive' in Python3.2 with urllib
body: <p>I try to keep a HTTP Connection with urllib.request in Python 3.2.3 alive with this code:</p>
  
  <pre><code>handler = urllib.request.HTTPHandler()
  opener = urllib.request.build_opener(handler)
  opener.addheaders = [("connection", "keep-alive"), ("Cookie", cookie_value)]
  r = opener.open(url)
  </code></pre>
  
  <p>But if I listen to the connection with Wireshark I get an Header with "Connection: closed" but set Cookie.</p>
  
  <pre><code>Host: url
  Cookie: cookie-value
  Connection: close
  </code></pre>
  
  <p>What do I have to do to set Headerinfo to Connection: keep-alive?</p>