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src		src
CHANGELOG.md		CHANGELOG.md
Readme.md		Readme.md
package.json		package.json
tsconfig.json		tsconfig.json
vite.config.ts		vite.config.ts

Readme.md

rrweb canvas webrtc plugin

Plugin that live streams contents of canvas elements via webrtc

Example of live streaming via `yarn live-stream`

webrtc-1080p.mov

Instructions

Record side

// Record side

import rrweb from 'rrweb';
import { RRWebPluginCanvasWebRTCRecord } from '@rrweb/rrweb-plugin-canvas-webrtc-record';

const webRTCRecordPlugin = new RRWebPluginCanvasWebRTCRecord({
  signalSendCallback: (msg) => {
    // provides webrtc sdp offer signal & connect message
    // make sure you send this to the replayer's `webRTCReplayPlugin.signalReceive(signal)`
    sendSignalToReplayer(msg); // example of function that sends the signal to the replayer
  },
});

rrweb.record({
  emit: (event) => {
    // send these events to the `replayer.addEvent(event)`, how you do that is up to you
    // you can send them to a server for example which can then send them to the replayer
    sendEventToReplayer(event); // example of function that sends the event to the replayer
  },
  plugins: [
    // add the plugin to the list of plugins, and initialize it via `.initPlugin()`
    webRTCRecordPlugin.initPlugin(),
  ],
  recordCanvas: false, // we don't want canvas recording turned on, we're going to do that via the plugin
});

Replay Side

// Replay side
import rrweb from 'rrweb';
import { RRWebPluginCanvasWebRTCReplay } from '@rrweb/rrweb-plugin-canvas-webrtc-replay';

const webRTCReplayPlugin = new RRWebPluginCanvasWebRTCReplay({
  canvasFoundCallback(canvas, context) {
    console.log('canvas', canvas);
    // send the canvas id to `webRTCRecordPlugin.setupStream(id)`, how you do that is up to you
    // you can send them to a server for example which can then send them to the replayer
    sendCanvasIdToRecordScript(context.id); // example of function that sends the id to the record script
  },
  signalSendCallback(signal) {
    // provides webrtc sdp offer signal & connect message
    // make sure you send this to the record script's `webRTCRecordPlugin.signalReceive(signal)`
    sendSignalToRecordScript(signal); // example of function that sends the signal to the record script
  },
});

const replayer = new rrweb.Replayer([], {
  UNSAFE_replayCanvas: true, // turn canvas replay on!
  liveMode: true, // live mode is needed to stream events to the replayer
  plugins: [webRTCReplayPlugin.initPlugin()],
});
replayer.startLive(); // start the replayer in live mode

replayer.addEvent(event); // call this whenever an event is received from the record script