code: public synchronized void connectionEstablished (
          PresentsConnection conn, Name authname, AuthRequest req, AuthResponse rsp)
      {
          String type = authname.getClass().getSimpleName();
  
          // see if a session is already registered with this name
          PresentsSession session = getClient(authname);
  
          if (session != null) {
              //log.info("Resuming session", "type", type, "who", authname, "conn", conn);
              session.resumeSession(req, conn);
  
          } else {
              log.info("Session initiated", "type", type, "who", authname, "conn", conn);
              // figure out our session class
              Class<? extends PresentsSession> sessionClass = null;
              for (SessionFactory factory : _factories) {
                  if ((sessionClass = factory.getSessionClass(req)) != null) {
                      break;
                  }
              }
              // create a new session and stick'em in the table
              session = _injector.getInstance(sessionClass);
              session.startSession(authname, req, conn, rsp.authdata);
  
              // map their session instance
              synchronized (_usermap) {
                  // we refetch the authname from the session for use in the map in case it decides
                  // to do something crazy like rewrite it in startSession()
                  _usermap.put(session.getAuthName(), session);
              }
          }
  
          // map this connection to this session
          _conmap.put(conn, session);
      }
docs: Called by the connection manager to let us know when a new connection has been established.