What is WebRTC
and how does we use it at Dyte
Jesús Leganés-Combarro "piranna"
for Dyte Inc.
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March 2022
What's WebRTC
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What's WebRTC
- Open specification and API for Real Time Communications
- Voice & video (MediaStreamTracks)
- Raw data (DataChannels)
- Build on top of RTP, SCTP, SDP & ICE
- Doesn't spec signaling on purpose
- Left to the developers
- RFC 1149 🐦
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What's WebRTC
- RTP: Real-time Transport Protocol
- Stream of audio & video
- SCTP: Stream Control Transmission Protocol
- DataChannels
- SDP: Session Description Protocol
- What to connect
- ICE: Interactive Connection Establishment
- Where to connect (public IPs)
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What's WebRTC
- Initially targeted for browser-to-browser
- Also used for browser-to-server communications
- Mediasoup, Kurento, Meedoze, Jitsi, Pion, LiveKit...
- Each one with its own architecture and use case
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What's WebRTC
- Proposed in October 2011
- First experimental implementations for audio & video about September 2012
- First experimental implementations for data circa March 2013
- Shameless plug: DataChannels-polyfill in October 2012 😉
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Use cases
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Use cases
- Video conference
- WhatsApp, Skype, Facebook Messenger, Slack Huddle, Discord
- Anything web browser capable (Zoom... sort of)
- VoIP
- Low-latency games networking
- Network tunneling
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Use cases
- File transfers
- ShareIt! (mine! 😋)
- WebTorrent, PeerCDN
- Video streaming
- Popcorn time (HLS over WebTorrent)
- ChromeCast
- Clubhouse (only audio)
- Twitch
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Related APIs
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getUserMedia
# PRESENTING CODE
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Related APIs
- getUserMedia
- WebAudio
- FileSystem API
- Canvas
- FileReader
- MediaSource
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How we use WebRTC at
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WebRTC at Dyte
- Powered by Mediasoup SFU
- `room-node` code based on EduMeet
- forked from Mediasoup-demo
- Client <-> Server
- Audio & Video streams (mediasoup-client)
- Server <-> Server (remote-router-provider)
- Audio & Video streams
- DataChannels (second-stage signaling)
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Server to Server
- Using PipeTranports as transport layer
- Moleculer ServiceBroker as first-stage signaling
- DataChannel as second-stage signaling
- Create and control Mediasoup objects
- Remote Mediasoup
- One extra DataChannel per stream
- Propagate stream events & commands
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How can we use it in
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The Future™️
- P2P4121
- Peer-to-Peer for one-to-one
- HTTP + DataChannels instead of WebSockets
- Direct Messages between chat participants
- Efemeral file transfers
- Directly between users
- Broadcasted to all of them
- Maybe better WebTorrent?
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