A selective forwarding unit is a video routing service which allows webrtc sessions to scale more efficiently. This package provides a simple, flexible, high performance Go implementation of a WebRTC SFU. It can be called directly or through a gRPC or json-rpc interface.
- Audio/Video/Datachannel forwarding
- Congestion Control (TWCC, REMB, RR/SR)
- Unified plan semantics
- Pub/Sub Peer Connection (
O(n)port usage) - Audio level indication (RFC6464). "X is speaking"
ion-sfu is the engine behind several projects. It's designed to be focused, with minimal signaling or external dependencies. It's simple to embed ion-sfu within your service: we include a few examples inside cmd/signal.
For "batteries-included", end-to-end solutions that are easier to deploy, check out:
- LiveKit: Open source platform for real-time communication (SDKs for all major platforms)
- Ion: Real-Distributed RTC System by pure Go and Flutter
Run the Echo Test example
docker-compose -f examples/echotest-jsonrpc/docker-compose.yaml up
Open the client
http://localhost:8000/
The json-rpc signaling service can be used to easily get up and running with the sfu. It can be used with the corresponding javascript signaling module.