Vortex OpenSplice

The DDS Security Standard

This presentation introduces the DDS Security Standard. A plug-in based framework that provides data-centric security.

DDS In Action

Introduced in 2004, the Data Distribution Service (DDS) has been steadily growing in popularity and adoption. Today, DDS is at the heart of a large number of mission and business critical systems, such as, Air Traffic Control and Management, Train Control Systems, Energy Production Systems, Medical Devices, Autonomous Vehicles, Smart Cities and NASA’s Kennedy Space […]

Microservices Architecture with Vortex

Microservice Architectures — which are the norm in some domains — have recently received lots of attentions in general computing and are becoming the mainstream architectural style to develop distributed systems. As suggested by the name, the main idea behind micro services is to decompose complex applications in, small, autonomous and loosely coupled processes communicating […]

DDSI configuration without multicast using unicast peers

When not using multicast, you must define your set of ‘peers’ as automatic discovery relies on multicast. So the ‘ddsi2’ section in the configuration should look like this; <DDSI2Service name=”ddsi2″> <General> <NetworkInterfaceAddress>AUTO</NetworkInterfaceAddress> <AllowMulticast>false</AllowMulticast> <EnableMulticastLoopback>false</EnableMulticastLoopback> <CoexistWithNativeNetworking>false</CoexistWithNativeNetworking> </General> <Compatibility> <StandardsConformance>lax</StandardsConformance> </Compatibility> <Discovery> <Peers> <Peer Address=”name_or_address_of_machine1″/> <Peer Address=”name_or_address_of_machine2″/> <Peer Address=”name_or_address_of_machine3″/> </Peers> </Discovery> </DDSI2Service> If you run multiple applications […]

Can you tell the difference between historical samples and new samples?

After calling wait_for_historical_data writers may still be producing new data during that the time in takes to complete. Can you tell the difference between historical samples and new samples (where the latter might be defined as “written since I called wait_for_historical_data”)? Answer There is no such ‘break’ between the samples received so you may have […]

Can you build a DDS application on Windows using CYGWIN?

I want to use the same program code as for an application on a Linux-PC (GNU GCC/G ++). Is this possible? For OpenSplice we use the cygwin environment only for tools like make, flex, bison and the bash scripting: the OpenSplice source code is compiled with the Microsoft compiler from within the cygwin environment. This […]

20 Tips for OpenSplice

This presentation provides 20 Tips that help newbies to get into OpenSplice while avoiding the most common traps and pitfalls.

Classical Distributed Algorithms with DDS

The OMG DDS standard has been witnessing a very strong adoption as the distribution middleware of choice for a large class of mission and business critical systems, such as Air Traffic Control, Automated Trading, SCADA, Smart Energy, etc. The main reason for choosing DDS lies in its efficiency, scalability, high-availability and configurability — through the […]

Advanced OpenSplice Programming

In this two-part presentation we will cover all the aspects tied to architecting and developing OpenSplice DDS systems. We will look into Quality of Services, data selectors concurrency and scalability concerns. These are from December 2012 but still include key OpenSplice concepts. Part 1 Part 2

Why might Sample Data not arrive?

Why might Sample Data not arrive? There are a couple of main reasons the sample data may not arrive and here are the causes, and solutions, to these problem The Configuration is not Strict Reliable Setting the Reliaility Qos Policy to RELIABLE is not enough on its own to guarantee that a DataWriter delivers a […]

OpenSplice C# .NET SDK Migration

Building CSharp examples for .NET Framework on legacy systems. The CSharp examples target .NET Standard 2.0 (for class libraries) and .NET Core App 3.1 (for applications), per Microsoft guidelines for maximum portability amongst all .NET implementations (.NET Core, .NET Framework, Mono, Xamarin etc). However there are situations where users still desire to use .NET Framework […]

OpenSplice Visual Studio Pre-Processer

OpenSplice for Windows is built with this specific Pre-Processor Definition which must also be used for the application during the OpenSplice build process _WIN32_WINNT=0x0502 OpenSplice may have memory corruption if the application is compiled with a different _WIN32_WINNT value than OpenSplice. If the definition is set after everything from OpenSplice is included then a newer value […]

Disposing stale data in DDS

Normally, when data is stale in DDS it is disposed automatically. There are other ways that this can occur though. When the auto-dispose option in the QoS is enabled then when a subscriber detects that a writer has become unresponsive (or has been deleted) then the data is disposed implicitly for all instances of that […]

Network Channel / Transport Priority FAQ’s

DDSI-Extended (DDSI2E) is an extended version of the DDSI2 networking service, giving extra features for: Network partitions: Network partitions provide the ability to use alternative multicast addresses for combinations of DCPS topics and partitions to separate out traffic flows, for example for routing or load reduction. Security: Encryption can be configured per network partition. This […]

Vortex OpenSplice documentation

Vortex OpenSplice is leading (Commercial and Open Source) Implementation of the OMG DDS Standard.  It comes with a complete set of DDS documentation. Find the documentation for Vortex Cafe, Vortex Insight, Vortex Link or Vortex Edge on a separate page. The Vortex OpenSplice documentation will help you understand how to use DDS. The documentation  contains […]

Release Notes and Known Issues

Vortex OpenSplice Release Notes The release notes contain all the information about fixed bugs and changes in the different OpenSplice versions Fixed bugs and changes in Vortex OpenSplice 6.11.x Fixed bugs and changes in Vortex OpenSplice 6.10.x Fixed bugs and changes in Vortex OpenSplice 6.9.x Fixed bugs and changes in Vortex OpenSplice 6.8.x Fixed bugs […]

Vortex Opensplice MATLAB Demos

Vortex OpenSplice with MATLAB A number of demonstration videos have been created to walk you through the process of developing DDS applications with MATLAB. Installation of MATLAB components Startup OpenSplice Shapes Example Overview How to Process IDL Creating a Topic Block Creating a Reader Block Real-time Simulation Write a Tracking Circle Use Filter Expression MATLAB […]