title: Disconnecting a single client disconnects many other clients
body: <p>I’m testing a Diffusion solution in our pre-production environment. The solution gives anonymous clients 10 minutes of free access before they have to authenticate, or be disconnected. This works fine in development and early testing, but in pre-production when one client is disconnected we see many simultaneous disconnection of other clients without cause. Once the logging is set to FINEST the log file says:</p>
  
  <pre><code>2016-03-21 11:57:36.557|DEBUG|Diffusion: InboundThreadPool Thread_4||NIOBufferedChannel@52e2a219[connected local=/10.0.4.1:8080 remote=/10.0.1.99:58673] : Closed(UNEXPECTED_ERROR) Unexpected error EOF|com.pushtechnology.diffusion.io.message.MessageChannelException
  2016-03-21 11:57:36.558|DEBUG|Diffusion: InboundThreadPool Thread_4||Java Client 50328FF242799CD4-000000000000015A AWAITING_RECONNECTION@10.0.1.99: State changed from CONNECTED to AWAITING_RECONNECTION.|com.pushtechnology.diffusion.clients.impl.ClientImpl
  2016-03-21 11:57:36.558|DEBUG|Diffusion: InboundThreadPool Thread_4||Java Client 50328FF242799CD4-000000000000015A AWAITING_RECONNECTION@10.0.1.99: CONNECTION_LOST keeping alive for 60000 ms.|com.pushtechnology.diffusion.clients.impl.ClientImpl
  </code></pre>
  
  <p>The effected clients are always browsers, not smart phones. Often older browsers such as IE9. </p>