Introducing RSDT: An Evolution in Data Transmission

Introducing RSDT: An Evolution in Data Transmission

Data Transmission In Action

DexFX’s Transport Protocol for Outstanding Efficiency and WAN Acceleration


RSDT represents the Reliable Single-Destination Transport protocol. Interestingly, this name aligns with another protocol from Dexor Technology GmbH: the RMDT or Reliable Multi-Destination Transport protocol. Although “Single Destination” might appear repetitive in protocol discussions, it’s deliberately chosen. This choice emphasizes its connection and origin from Dexor Technology GmbH. Furthermore, this naming strategy underscores that both protocols hail from the same source, crafted for enhanced data transmission.

Data transmission with RMDT and RSDT - Multidestination and Singledestimation
built over UDP

History and Background

In response to the demand for rapid data transmission over Long Fat Pipes, the RSDT protocol emerged. Designed to resist common network issues like significant latency, packet losses, and jitter, it stands robust. Furthermore, its foundation on UDP ensures compatibility with older infrastructures, given that all network devices recognize UDP. Notably, the protocol prides itself on a distinct reliability scheme, which guarantees zero data loss during transmission. Moreover, it incorporates a special congestion control system, optimizing bandwidth use.

under the hood

Technical Overview

The Reliable Single Destination Transport protocol emerges as a state-of-the-art solution tailored for high-speed data transmission challenges, notably over Long Fat Pipes. Let’s delve into its intricate technical facets:

Foundation on UDP

RSDT is anchored on the User Datagram Protocol (UDP). In contrast to the connection-oriented Transmission Control Protocol (TCP), UDP operates without connections. Consequently, our protocol, harnessing UDP, initiates data transfers without a formal connection, promoting swifter and adaptable data transmission. This base ensures RSDT’s compatibility, given the universal support for UDP.

Reliability Scheme

While UDP’s inherent drawback is its unreliability, RSDT counters this with its distinct reliability scheme. This system guarantees no data packet loss during transmission. It integrates error-checking, acknowledgments, and retransmissions, safeguarding data integrity.

Congestion Control Mechanism

Network congestion can drastically impede data transfers. However, RSDT showcases a specialized congestion control system that capitalizes on available bandwidth. This ensures data travels at peak speeds without saturating the network.

Multithreading and Multiple UDP Sockets

RSDT adopts a multithreaded strategy to navigate hardware and OS limitations in dispatching UDP packets. By employing numerous UDP sockets, it sidesteps packet-sending restrictions, often tied to CPU frequency constraints. This method empowers our protocol to attain remarkable throughput rates, reaching up to 40 Gbps.

Bidirectional Data Transfer

Distinguishing RSDT from its counterpart, the Reliable Multi-Destination Transport (RMDT), is its bidirectional data transfer capability. While RMDT primarily targets sending data to multiple endpoints, RSDT facilitates data movement in both directions. This two-way feature positions the new protocol as a potential substitute for transport protocols in various applications, encompassing Rsync, FTP, and HTTP/HTTPS.

Performance Metrics

Designed for stellar performance, RSDT manages global traffic up to 40 Gbps between nodes using 9000-byte packets (Ethernet jumbo frames). Even with a conventional 1500-byte packet size, speeds soar to 10 Gbps.

Handling Data Between Threads

RSDT adeptly tackles the technical challenge of swiftly managing data between threads. For instance, dispatching 9000-byte packets at 40 Gbps necessitates efficient data distribution across all participating transmission threads.

The Value

Benefits and Advantages

Multithreaded Approach

RSDT’s multithreaded strategy paves the way for superior throughput, revolutionizing data transmission. Efficiently managing data between threads at such velocities was daunting. For instance, dispatching 9000-byte packets (Ethernet jumbo frames) at 40 Gbps demands a packet every 1.8 microseconds across all transmission threads.

Seamless Integration

As a transport protocol, RSDT excels by seamlessly enhancing any application’s performance from behind the scenes, without altering its interface or features.

Cost Efficiency

The protocol optimizes data transfers, slashing redundant transmissions. Consequently, businesses can economize on bandwidth and infrastructure.

Enhanced User Experience

For real-time data-dependent applications, like video calls or online gaming, RSDT minimizes lag and buffering, elevating user experience.


RSDT’s compatibility with older systems means no need for businesses to revamp their current infrastructure, simplifying integration.

Global Reach

RSDT’s prowess in managing significant latency positions it as a top choice for global businesses and apps, ensuring uniform performance worldwide.

Support for Emerging Technologies

With the rise of edge computing and decentralized networks, RSDT stands ready to provide optimized data transfer solutions.

Support for Large Data Transfers

Given its rapid capabilities, RSDT is a prime fit for sectors needing massive data transfers, including film production, scientific studies, and big data analytics.

Challenges and Limitations

RSDT’s main constraint lies in its compatibility. As of now, it’s tailored for Unix-like OSs. For Windows enthusiasts, the Windows Subsystem for Linux (WSL) offers a workaround to deploy the protocol. However, there’s a silver lining. The acceleration software can be set up on intermediary nodes, like routers between offices, ensuring smooth transport for users.


Future Prospects

Dexor Technology GmbH remains a beacon of innovation, championing the RSDT and RMDT protocols’ potential. The firm is fervently crafting a diverse array of applications and demo scenarios to vividly spotlight RSDT’s unmatched performance perks. Present prototypes have already flaunted the protocol’s capabilities, highlighting its potential to replace TCP with superior protocols. This shift promises not just heightened efficiency but also a transformative user journey.

With the digital realm’s evolution, the rise of 5G and ubiquitous WiFi presents a golden chance for RSDT. Tailored optimizations for these wireless networks are on the horizon for the protocol. By tackling wireless communication’s inherent hurdles — from disruptions and signal drops to user mobility intricacies — the protocol aims to reshape wireless data transmission standards. In this endeavor, it’s gearing up to be a wireless communication linchpin, ushering in an age of fast, dependable, and streamlined data exchanges.


RSDT stands as a shining example of innovation in data transmission. Its fusion of distinct features and unmatched speed doesn’t just categorize it as another protocol. Instead, it’s a transformative entity, poised to reshape the digital communication world. As we tread the shifting tech landscape, RSDT isn’t just adjusting to what’s next — it’s actively molding it. In today’s dynamic digital era, it rises not merely as a protocol but as a guiding light for the future of smooth, efficient, and sturdy digital communication.

Ready to experience the future of data transmission?

Don’t get left behind—embrace the revolution that RSDT offers. Click the link below to get in touch and see firsthand how the protocol can transform your digital communication landscape. Act now and be a part of the next big thing in data transmission!

Dmitry Kachan