title: How does a tomcat server identify clients for creating session id
body: <p>I need to learn how a tomcat server identify different hosts to create unique sessions. Does it do it
  according to Ip ? </p>
  
  <p>Based on answer to this question, I want to be able to create multiple sessions for single client, on a server which uses simply <code>httpServletRequest.getSession()</code> to create new sessions. Is possible to give a predefined session Id to a server, so that that server creates that new session bound to that session Id ? </p>