title: Jersey as REST client, maintaining a connection (or validating connection)
body: <p>I am getting started with Jersey 2.1 which I want to use as a client, to make REST calls to someone elses web service.</p>
  
  <p>I have been working through the tutorials, and I think I understand how to open a connection, and make calls to the web service.</p>
  
  <p>The question I have is, since my service will persist, and have to process events when they happen, how do I manage and maintain session connectivity?</p>
  
  <p>I have been trying to understand if I need to:</p>
  
  <ol>
  <li>Close connections? This does not seem to be discussed.  So are the implicitly auto-closed after making a call?</li>
  <li>If not auto-closed, can I check the state to see if a Connection is still valid? </li>
  </ol>