Mirror/README.md

![Mirror Logo](https://i.imgur.com/ikP9eYs.png)

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## Mission
Mirror is a **high level** Networking API for Unity, built on top of the **low level** [Telepathy](https://github.com/vis2k/Telepathy) library.

Mirror is built [and tested](https://www.youtube.com/watch?v=mDCNff1S9ZU) for **MMO Scale** Networking by the developers of [uMMORPG](https://assetstore.unity.com/packages/templates/systems/ummorpg-51212) and [Cubica](https://cubica.net).

Mirror is optimized for **ease of use** and **probability of success**. Projects that use Mirror are small, concise and maintainable. uMMORPG was possible with <6000 lines of code. We needed a networking library that allows us to [launch our games](https://mirror-networking.com/showcase/), period.

## Architecture
With Mirror, the **Server & Client are ONE** project _(hence the name)_. Instead of having one code base for the server and one for the client, we simply use the same code for both of them.
* **[Server]** / **[Client]** tags can be used for the server-only and client-only parts
* **[Command]** s are used for Client->Server communication
* **[ClientRpc]** / **[TargetRpc]** for Server->Client communication
* **[SyncVar]** s / SyncLists are used to automatically synchronize state

_Note: Mirror is based on Unity's abandoned UNET Networking system. We fixed it up and pushed it to MMO Scale._

## Low Level Transports
* (built in) [Telepathy](https://github.com/vis2k/Telepathy): TCP
* (built in) [UNET LLAPI](https://docs.unity3d.com/Manual/UNetUsingTransport.html): UDP
* (built in) [Ninja.Websockets](https://github.com/ninjasource/Ninja.WebSockets): Websockets
* [Apathy](https://mirror-networking.com/apathy/): Native TCP
* [FizzySteam](https://github.com/Raystorms/FizzySteamyMirror/): SteamNetwork
* [Ignorance](https://github.com/SoftwareGuy/Ignorance/): ENET UDP
* [LiteNetLib4](https://github.com/MirrorNetworking/LiteNetLibTransport/) LiteNetLib UDP

## Getting Started
Download [Mirror on the Asset Store](https://assetstore.unity.com/packages/tools/network/mirror-129321), open one of the examples & press Play!

Check out our [Documentation](https://mirror-networking.com/docs/) to learn how it all works.

If you are migrating from UNET, then please check out our [Migration Guide](https://mirror-networking.com/docs/General/Migration.html). Don't panic, it's very easy and won't take more than 5 minutes.

## Funding
Mirror is free & open source software funded by Donations. If you love it, please consider supporting [Mirror on GitHub](https://github.com/sponsors/vis2k). You'll receive some pro-tools and priority support access :)

## Benchmarks
* Telepathy [1000 connections](https://github.com/vis2k/Telepathy) test
* [uMMORPG 480 CCU worst case test](https://youtu.be/mDCNff1S9ZU) (everyone broadcasting to everyone else)

## Mirror Development
> _“Would you tell me, please, which way I ought to go from here?”_<br/>
> _“That depends a good deal on where you want to get to,"_ said the Cat.<br/>
> _"I don’t much care where—“_ said Alice.<br/>
> _“Then it doesn’t matter which way you go,”_ said the Cat.<br/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;- Alice in Wonderland _(Lewis Carroll)_

Our core principle is [KISS](https://en.wikipedia.org/wiki/KISS_principle): **keep it simple & stupid!**

Mirror is used all the way from small indie games to large scale MMORPGs. In other words, Mirror needs to **survive for a decade!**

If you want to contribute, fixes/tests/improvements are highly appreciated. New features are considered very carefully with the next decade in mind, and usually not merged unless they make overwhelmingly much sense.