title: How to get the Node's server IP behind a load balancer in Java
body: <p>I have a webpage behind a load balancer, and I want to display the user (for troubleshooting purposes) the IP of the actual node that the user is connected to (will be the same for a while due to sticky session)</p>
  
  <p>I'm sure it's a very trivial question, but I want to be sure, what Java API should be used for that? will all APIs return me the request host? or will it be server dependent? </p>