moq-rs/README.md

# Media over QUIC

Media over QUIC (MoQ) is a live media delivery protocol utilizing QUIC streams.
See the [Warp draft](https://datatracker.ietf.org/doc/draft-lcurley-warp/).

This repository is a Rust server that supports both contribution (ingest) and distribution (playback).
It requires a client, such as [moq-js](https://github.com/kixelated/moq-js).

## Setup

### Media

This demo simulates a live stream by reading a file from disk and sleeping based on media timestamps. Obviously you should hook this up to a real live stream to do anything useful.

Download your favorite media file and convert it to fragmented MP4.
This requires [ffmpeg](https://ffmpeg.org/)

```
wget http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4 -O media/source.mp4
./media/generate
```

### Certificates

Unfortunately, QUIC mandates TLS and makes local development difficult.
If you have a valid certificate you can use it instead of self-signing.

Use [mkcert](https://github.com/FiloSottile/mkcert) to generate a self-signed certificate.
Unfortunately, this currently requires Go in order to [fork](https://github.com/FiloSottile/mkcert/pull/513) the tool.

```
./cert/generate
```

Unfortunately, WebTransport in Chrome currently (May 2023) doesn't verify certificates using the root CA.
The workaround is to use the `serverFingerprints` options, which requires the certificate MUST be only valid for at most **14 days**.
This is also why we're using a fork of mkcert, because it generates certificates valid for years by default.
This limitation will be removed once Chrome uses the system CA for WebTransport.

## Usage

Run the server:

```
cargo run
```

This listens for WebTransport connections on `https://localhost:4443` by default.
Use a [MoQ client](https://github.com/kixelated/moq-js) to connect to the server.