title: Pusher - Ping pong functionality
body: <p>I see that Pusher supports ping pong based on the <a href="http://pusher.com/docs/pusher_protocol#ping-pong" rel="nofollow">docs</a>.</p>
  
  <p>However, I am not sure on where to start on this.</p>
  
  <p>What I want to do is check <a href="http://pusher.tenderapp.com/kb/faq-common-requests/half-open-connections-lead-to-temporarily-incorrect-connection-counts-and-webhook-call-delays" rel="nofollow">half open connections</a> and close them because I am getting an unrealistic number of concurrent connections on my site.</p>