Sourced from github.com/pion/webrtc/v3's releases.

Plutonia

Pion WebRTC v3.1.0 is now available. Pion WebRTC is a Go implementation of WebRTC. If you haven't used it before check out awesome-pion or example-webrtc-applications for what people are doing. We maintain a feature list and other helpful resources in our README.md

This release includes 170 commits from 36 authors. This release was primarily focused on improve media quality/experience and making it easier to scale with Pion.

New Features

Serve many PeerConnections with one UDP port

You can now serve all your PeerConnections with a single UDP port. This makes deploying and scaling in environment like Kubernetes easier. Most WebRTC implementations (including Pion) will listen on a random UDP port for each remote peer.

To use this you create a ICEUDPMux and then share across all your PeerConnections via the SettingEngine. Your code will look like the following.

// Listen on UDP Port 8443
udpListener, _ := net.ListenUDP("udp", &net.UDPAddr{
    IP:   net.IP{0, 0, 0, 0},
    Port: 8443,
})
// Configure a SettingEngine to use our UDPMux. By default a PeerConnection has
// no global state. The API+SettingEngine allows the user to share state between them.
// In this case we are sharing our listening port across many.
settingEngine := webrtc.SettingEngine{}
settingEngine.SetICEUDPMux(webrtc.NewICEUDPMux(nil, udpListener))
// Create a new API using our SettingEngine
api = webrtc.NewAPI(webrtc.WithSettingEngine(settingEngine))
// Create a new PeerConnection
peerConnection_, := api.NewPeerConnection(webrtc.Configuration{})

This was implemented in d0a525.

FireFox Simulcast Support

We now support SSRC based Simulcast, before we only supported reading RID/MID from the RTP Extension Header as defined in ietf-mmusic-sdp-simulcast.

This was implemented in d570b7.

Sender/Receiver Report

Sender/Receiver Reports are now enabled by default via pion/interceptor This means that remote peers will now get metadata from Pion and be able to do things like Bandwidth Estimation.

No code changes are needed to use them, but if you wish to disable them create a PeerConnection without passing a InterceptorRegisty that RegisterDefaultInterceptors has been called on. This can be useful if performance is critical or you want to ship your own implementation.

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• 980a56d Update module github.com/pion/interceptor to v0.1.6
• 157220e Run gofmt to add new build constraints
• 04ca449 Set up RTP Receivers synchronously
• f644649 Add ability to set RTP stream ID on TrackLocal
• 7004fbb Add H265 and AV1 MimeTypes
• 585702f Update module github.com/pion/dtls/v2 to v2.1.0
• be49dbc Use audio negotiated PTs before video builtin PTs
• d4b6456 Fix RTPSender.Send crash
• dd9d4c5 Make setMid of Transceiver public
• d2cc00d Update golang.org/x/net commit hash to fe4d628
• Additional commits viewable in compare view

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