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RTPS DDS Traffic
RTPS (Real Time Publish Subscribe) DDS User-Traffic is primarily used for real-time data distribution in distributed systems using the Data Distribution Service (DDS) protocol. This port facilitates efficient, scalable publish-subscribe communication patterns, supporting both TCP and UDP, commonly found in mission-critical, time-sensitive environments such as robotics, autonomous vehicles, industrial automation, and IoT deployments..
Overview: RTPS (Real-Time Publish-Subscribe) is the wire protocol used by the Object Management Group's (OMG) Data Distribution Service (DDS), a middleware protocol designed for scalable, dependable, high-performance data-centric publish-subscribe communication. Operating over port 7401, RTPS enables distributed components to exchange data in real-time with low-latency and high throughput.
Transport Protocols: RTPS supports both TCP and UDP transport. UDP is often preferred due to its lower latency and overhead, though TCP can be used when reliability is prioritized. The protocol supports multicast communication for efficient data dissemination to multiple subscribers, along with configurable Quality of Service (QoS) policies controlling reliability, durability, latency, and security requirements.
Use Cases: It is widely deployed in sectors requiring deterministic data exchange, including aerospace, defense, autonomous vehicles, industrial automation, medical devices, robotics, and large-scale simulation systems. DDS with RTPS provides features such as automatic discovery of publishers and subscribers, flexible data filtering, and support for both reliable and best-effort communication styles.