code: private void onAcquire(final PooledConnection conn, String httpMethod, String uriStr, 
                             int attemptNum, CurrentPassport passport)
      {
          passport.setOnChannel(conn.getChannel());
          removeIdleStateHandler(conn);
  
          conn.setInUse();
          if (LOG.isDebugEnabled()) LOG.debug("PooledConnection acquired: " + conn.toString());
      }
docs: function to run when a connection is acquired before returning it to caller.