# File sipper/proxy_controller.rb, line 129
    def on_response(session)
      peer_session = get_peer_session(session)
      if peer_session && session[:_sipper_proxy_transparent]
        if session.iresponse.code == 100
          tr_hash = self.class.get_transaction_usage
          return if tr_hash[:use_transactions] || tr_hash[:use_ict] 
        end
        relay_response(session)
      else
        super
      end
    end