title: cometd returning "402::Unknown Client" error immediately after doing handshake
body: <p>I have an application built using CometD Java that has been deployed to a number of client hosting instances and is working fine. However, in recent client implementation we having an issue where the cometd long-polling requests are returning a "402::Unknown Client" error immediately after doing the handshake. </p>
  
  <p>So the browser attempts another handshake, which is successful, but then again it returns a 402::Unknown Client error on the very next request. And so on it repeats likes this.</p>
  
  <p>I can't see any differences between this client implementation and the previous ones (same jboss/apache versions, etc.) so I'm stuck as to why this is happening.</p>
  
  <p>Appreciate any thoughts or suggestions.</p>
  
  <p>Thank you.</p>