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DOTSNET - High Performance Unity ECS Networking from the creator of Mirror!
(Demo) (Docs) (Forum) (Discord) (Roadmap)

Please follow the Installation Instructions after purchasing!

“In the information age, the barriers just aren't there. The barriers are self imposed. If you want to set off and go develop some grand new thing, you don't need millions of dollars of capitalization. You need enough pizza and Diet Coke to stick in your refrigerator, a cheap PC to work on, and the dedication to go through with it. We slept on floors. We waded across rivers.” — John D. Carmack, Masters of Doom

Introduction
DOTSNET brings easy to use, WoW/EvE scale AAA Networking to Unity.

Embracing Unity's new Data Oriented Technology Stack, DOTSNET can handle both millions of entities & thousands of connections, with unmatched stability & ease of use.

It's fun to work with, it's orders of magnitude faster than any other Unity networking solution, and comes with over 90% test coverage by default.

Low Level Transports:
DOTSNET supports multiple low level Transports for message sending:
* kcp: fast & reliable UDP
* Telepathy: battle Tested TCP made for Mirror

Lightweight & Modular
DOTSNET was developed with simplicity in mind. Every single line of code was crafted very carefully, and all the systems are modular & replaceable. Implement your own Interest Management, Message Handling, Broadcasting, Transport etc. easily.

Stability
Previously, one of the biggest pain points of networking solutions were undetected bugs and instability. DOTSNET has over 200 unit tests and more than 90% coverage, which reduces the probability of bugs to the very minimum. It's the most well tested networking library for Unity, only followed by Mirror's 50% test coverage. Additionally, open bugs are always given the highest priority.

Each DOTSNET version has 0 open bugs at time of release. I use this for my own project, it needs to work.

Client & Server in Unity
DOTSNET requires no third party tools. You can develop your full game in Unity, the server & client can share large amounts of code, with only critical parts being excluded from the client with the "#if UNITY_SERVER" macro. This allows for a huge productivity boost, and makes updating game files a one step process.

Memory Separated Host Mode
Unity's MonoBehaviour world only has one Scene/Hierarchy without any memory separation, which made host mode very difficult. With DOTSNET, the server and the client are 100% separated in the ServerWorld & ClientWorld. This works so well that DOTSNET requires no extra code for host mode support. Whether you run only the server, only the client, or both - it makes no difference. In DOTSNET host mode, the client simply connects to the server and all communication goes over the network.

Delta Snapshots & Compression
DOTSNET comes with built-in Delta Snapshots & Delta Compression to minimize bandwidth. For any serialized entity data, DOTSNET only sends the difference compared to last time.

100% Full Server Authority
Before working on MMO networking, I spent several years reverse engineering popular MMORPGs to understand their mechanics and develop exploits. As result, DOTSNET is 100% server authoritative and validates any client input very carefully in order to prevent cheating. Any security bug will be fixed within 48 hours.

Concurrency by Default
Utilizing Unity's Job System, DOTSNET makes it extremely easy to write multi-threaded networking code, and performance scales directly with the amount of CPU cores!

Headless Linux Mode
The server can run on any platform, even on Ubuntu Linux systems in headless mode without any rendering, for maximum performance.

Interest Management
DOTSNET was designed with large scale MMOs in mind. Instead of sending the full world state to every connection, players only receive updates for nearby entities. The Interest Management system is fully replaceable, so you can modify it to also receive updates from guild members, sentry towers, parties, rooms and more. Additionally, you can implement any type of algorithm like Spatial Hashing, Sweeps, Brute Force, etc.

Allocation Free
DOTSNET itself requires no allocations in the hot-path. Everything runs extremely fast, without any Garbage Collection freezes.

Message Packing
Different Transports allow different message sizes. To minimize Socket calls, DOTSNET automatically packs multiple messages into bigger chunks while respecting the Transport's MaxMessageSize. In other words: whatever Transport you use, DOTSNET will perform!

Extensive Documentation
DOTSNET comes with an extensive, frequently updated, easy to read Google Docs documentation. If you are used to Unity's MonoBehaviour world, then many of the concepts will be new to you, which is why everything is explained as simple as possible.

Managing Expectations
While DOTSNET is extremely stable thanks to the over 90% test coverage, it's important to remember that Unity's ECS technology is cutting edge and in preview. Things will break, your old projects will require a complete rewrite, and it doesn't have anywhere near the tooling that the MonoBehaviour world has.

Take your time, experiment, get excited by this new technology and watch DOTSNET grow nicely along side Unity's DOTS/ECS framework.

Support
Please understand that DOTSNET is a one person project, made for my own MMO. Netcode requires a lot of focused work, which sometimes doesn't leave much time for personal support.

Build for the Metaverse, with DOTSNET!

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This asset uses kcp under MIT License; Telepathy under MIT License. See Third-Party Notice.txt file in package for details.