5. Conclusion

In this article, we have shown that it is possible to interconnect DDS applications located on separate DDS domains by ensuring their interworking in wide-area networks. To achieve this, we first analyzed the possibility of using the routing service provided by the DDS middleware layer to implement a bridge-federate that links separate DDS domains across a multi-domain IP network.

Next, we proposed a DDS proxy which, when compared with the bridge-federate, optimizes bandwidth by reducing the DDS traffic exchanged to its minimum expression. However, while these solutions improve our response to the problem of interworking DDS applications, they offer only an imperfect answer to the problem of QoS management. Our future work will focus on extending the DDS proxy to a QoS-guaranteed communication architecture in multi-domain IP networks.