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→History: Two more OMG specification´s were added DDS - XRCE and DDS - RPC |
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An [[interface definition language]] (IDL) was specified in 2014 independently from the [[Common Object Request Broker Architecture]] (CORBA) specification chapter 3. This IDL 3.5 was compatible with the CORBA 3 specification, but extracted as its own specification allowing it to evolve independently from CORBA.<ref>{{Cite web |title= Interface Definition Language (IDL), Version 3.5 |date= March 1, 2014 |publisher= OMG |url= http://www.omg.org/spec/IDL35/3.5/ |access-date= November 9, 2016 |archive-url= https://web.archive.org/web/20170121033326/http://www.omg.org/spec/IDL35/3.5/ |archive-date= January 21, 2017 |url-status= dead }}</ref>
Other protocols to be mentioned are: DDS-XRCE (DDS for eXtremely Resource Constrained Environments), this specification protocol allows the communication between devices of limited resources, like microcontroller for example and a DDS network. It makes publishing and subscribing to topics via an intermediate service in a DDS ___domain possible <ref>{{Cite web|title=About the DDS For Extremely Resource Constrained Environments Specification Version 1.0|url=https://www.omg.org/spec/DDS-XRCE|access-date=2021-03-12|website=www.omg.org}}</ref> and DDS-RPC (RPC Over DDS) which defines Remote Procedure Calls. These provide a bidirectional request/reply communication and determine distributed services, and are detailed using a service interface. It also supports both synchronous and asynchronous method invocation.
Starting with DDS version 1.4 in 2015, the optional DLRL layer was moved to a separate specification.<ref>{{Cite web |title= DDS Data Local Reconstruction Layer (DDS-DLRL) |date= April 2015 |url= http://www.omg.org/spec/DDS-DLRL/ |access-date= November 9, 2016 }}</ref>
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