RTCConfiguration.offerExtmapAllowMixed

Adds a boolean property to RTCConfiguration.offerExtmapAllowMixed() to enable the extmap-allow-mixed attribute in a session description protocol (SDP) offer. The SDP attribute extmap-allow-mixed, as defined in RFC8285, will be included in the SDP offer if this property is set to true. The SDP attribute extmap-allow-mixed is supported from Chrome 71, but due to backwards compatibility problems it was not included in the SDP offer by default.

Comments

This property is purely transitional. Initially it will be off by default. We hope to change the default to on when enough clients have updated their code. We hope that eventually backwards compatibility will not be needed and we can remove it completely.

Documentation

Specification

No public standards discussion

Status in Chromium

Blink>WebRTC>PeerConnection


Enabled by default (tracking bug) in:

  • Chrome for desktop release 73
  • Chrome for Android release 73
  • Android WebView release 73

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No public signals
  • No public signals
  • No public signals
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Owners

Last updated on 2019-01-30