Discovery in SOA-governed industrial middleware with mDNS and DNS-SD

Research efforts for the Industrial Internet of Things (IIoT) have placed great emphasis on the use of vertical integration as a mainline strategy for the realisation of the fourth industrial revolution (Industrie 4.0). The present paper proposes the use of a distributed Gateway Service Bus (GSB) as a plant-wide and resilient platform for vertical integration, field level reconfiguration, and distributed execution in heterogeneous environments. A basic service set composed of network, discovery, and management services is developed using technologies from P2P networks as cooperative systems and zero configuration networking to achieve a survivable distributed GSB. For evaluation, the resulting implementation is executed on 11 virtual machines (VM) and across two subnets in 33 consecutive runs. Results were consistent in showing that the proposed service set is capable of achieving network-wide discovery of published resources in less than 3 seconds.