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.
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
For "batteries-included", end-to-end solutions that are easier to deploy, check out:
Run the Echo Test example
docker-compose -f examples/echotest-jsonrpc/docker-compose.yaml up
Open the client
go build ./cmd/signal/json-rpc/main.go && ./main -c config.toml
docker run -p 7000:7000 -p 5000-5200:5000-5200/udp pionwebrtc/ion-sfu:latest-jsonrpc
For service-to-service communication, you can use the grpc interface. A common pattern is to call the grpc endpoints from a custom signaling service.
go build ./cmd/signal/grpc/main.go && ./main -c config.toml
docker run -p 50051:50051 -p 5000-5200:5000-5200/udp pionwebrtc/ion-sfu:latest-grpc
Answers to some Frequenty Asked Questions.
To see some other ways of interacting with the ion-sfu instance, check out our examples.
ion-sfu supports real-time processing on media streamed through the sfu using
For an example of recording a MediaStream to webm, checkout the save-to-webm example.
MIT License - see LICENSE for full text
Generate the protocol buffers and grpc code:
dnf install protobuf protobuf-compiler.
go get google.golang.org/grpc/cmd/protoc-gen-go-grpc
go get google.golang.org/protobuf/cmd/protoc-gen-go
protoc --go_out=. --go-grpc_out=. --go_opt=paths=source_relative --go-grpc_opt=paths=source_relative cmd/signal/grpc/proto/sfu.proto