February CoreDX Connection

February CoreDX DDS Connection 2026

Welcome to the Twin Oaks Computing, Inc Newsletter!

Our monthly newsletter brings you news and information about Twin Oaks Computing and our CoreDX DDS middleware. Be sure to "like", "follow" and "friend" us on our Social Networking sites for fun facts, free giveaways, and stories about Communications Middleware, Technology, and Twin Oaks Computing.

Meet with Twin Oaks Computing in Reston, VA.

March 24-27, 2026

Twin Oaks Computing has seen tremendous success connecting with clients at past events - especially those interested in the powerful energy and microgrid solutions enabled by CoreDX DDS. This year, we're excited to continue those conversations and showcase how our CoreDX DDS solutions support scalable, high-performance, real-time systems.

If you're attending the OMG meeting, be sure to stop by our booth to learn how CoreDX DDS can help drive your next energy or microgrid project forward. We look forward to seeing you there!

CoreDX DDS Tips & Tricks

Welcome to this month's edition of CoreDX DDS Tips & Tricks, where our engineers provide quick bits of information to help our customers.

Why does my read() call return 'NO_DATA'?

Note that a 'NO_DATA' return from read() or take() is not a sign of an error within CoreDX DDS. It simply means there is no data in the DataReader cache that meets the criteria of the provided read filters.

This is one example sequence of events that can result in a NO_DATA return from read():

1. data_available status is set (and listeners invoked)
2. sample causing on_data_available() to be called is removed from the DataReader cache
3. application calls read() or take()

For more information on when samples are removed from the DataReader cache, refer to the Sample and Instance Management whitepaper.

CoreDX DDS Tips & Tricks are intended to be useful for engineers using CoreDX DDS. If you have any questions, please contact us.

Try the full-featured CoreDX DDS product free for 30 days

Check out the newest DDS standardized features and get your hands on the leading small footprint Data Distribution Service implementation to see what it can do for you.

CoreDX DDS v5 continues to focus on resources and performance while incorporating new features and enhancements. Our evaluation copies include the full DDS API and standardized wire protocol, including:

• All language bindings for the DDS API's (C,C++, Cxx, C#, Java, Python, JavaScript)
• Full X-Types support including IDL, XML, and Dynamic type representations
• Remote Procedure Call over DDS (RPC over DDS)
• XML Application Definition
• DDS Security (upon request)

With these enhanced features, CoreDX DDS is the perfect middleware solution to meet the challenges of today's Industrial Internet of Things (IIoT) systems. Learn more here.

The evaluation is available here for direct download for the most common platforms, including Linux, MacOS, and Windows. Download your free 30 day trial of CoreDX DDS here.

Upcoming Events

March 23-27, 2026: OMG Technical Meeting, Reston, VA, USA

May 5-6, 2026: Microgrids Knowledge Conference, Orlando, FL, USA