CR Update Request for WebRTC 1.0: Real-time Communication Between Browsers webrtc

[dontcallmedom]

Link to group's decision to request transition

https://lists.w3.org/Archives/Public/public-webrtc/2019Nov/0068.html

Link to previous Candidate Recommendation transition request

https://lists.w3.org/Archives/Member/chairs/2018JulSep/0133.html

Substantive changes

122 substantive pull requests merged: https://github.com/w3c/webrtc-pc/pulls?utf8=%E2%9C%93&q=is%3Apr+is%3Aclosed+-label%3AEditorial+merged%3A%3E%3D2018-09-15

Highlights include:

The following features were removed given lack of implementation adoption:

• OAuth as a credential method for ICE servers (to be moved to an extension spec)
• Negotiated RTCRtcpMuxPolicy (previously marked at risk)
• voiceActivityDetection (overtaken by rtp parameters)
• getDefaultIceServers() (to be considered or revamped in 1.1)
• RTCCertificate.getSupportedAlgorithms() (to be considered in 1.1)
• statsended event (overtaken by restructuring of stats lifecycle)
• RTCRtpEncodingParameters: ptime, maxFrameRate (to be considered in 1.1), codecPayloadType, dtx, encodings, degradationPreference (moved to Content-Hints)
• Datachannel.priority (moved to DSCP extension)

The following features have been marked as at risk:

• RTCError attributes

The following features have been added:

• restartIce() method added to PeerConnection
• Introduced the concept of “perfect negotiation”, with an example to solve signaling races.
  • Implicit rollback in setRemoteDescription to solve races.
  • Implicit offer/answer creation in setLocalDescription to solve races.

The following features have been updated:

• Use of internal slots in several API descriptions to clarify state machine updates
• Clarification of state machine transitions for PeerConnection State, ICE Connection State
• Updates to reflect WebIDL changes (constructor, default value for dictionaries)
• Restructuring of the setLocalDescription and setRemoteDescription
• Clarify and align with implementations the use of simulcast
• Align with latest changes in webrtc-stats

Any changes in normative references?

New normative references:

• [MMUSIC-RID] RTP Payload Format Restrictions . Adam Roach. IETF. 15 May 2018. Active Internet-Draft. URL: https://tools.ietf.org/html/draft-ietf-mmusic-rid/
• [RFC5246] The Transport Layer Security (TLS) Protocol Version 1.2 . T. Dierks; E. Rescorla. IETF. August 2008. Proposed Standard. URL: https://tools.ietf.org/html/rfc5246
• [RFC8174] Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words . B. Leiba. IETF. May 2017. Best Current Practice. URL: https://tools.ietf.org/html/rfc8174

Formerly (mistakenly) marked as informative

• [IANA-RTP-2] RTP Payload Format media types . IANA. URL: https://www.iana.org/assignments/rtp-parameters/rtp-parameters.xhtml#rtp-parameters-2
• [RFC3890] A Transport Independent Bandwidth Modifier for the Session Description Protocol (SDP) . M. Westerlund. IETF. September 2004. Proposed Standard. URL: https://tools.ietf.org/html/rfc3890
• [RFC5506] Support for Reduced-Size Real-Time Transport Protocol (RTCP): Opportunities and Consequences . I. Johansson; M. Westerlund. IETF. April 2009. Proposed Standard. URL https://tools.ietf.org/html/rfc5506
• [RFC8445] Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal . A. Keranen; C. Holmberg; J. Rosenberg. IETF. July 2018. Proposed Standard. URL: https://tools.ietf.org/html/rfc8445
• [STUN-PARAMETERS] STUN Error Codes. IETF. IANA. April 2011. IANA Parameter Assignment. URL: https://www.iana.org/assignments/stun-parameters/stun-parameters.xhtml#stun-parameters-6
• [WEBSOCKETS-API] The WebSocket API. Ian Hickson. W3C. 20 September 2012. W3C Candidate Recommendation. URL: https://www.w3.org/TR/websockets/

Removed normative references:

• RFC5761
• [RFC6749] The OAuth 2.0 Authorization Framework . D. Hardt, Ed.. IETF. October 2012. Proposed Standard. URL: https://tools.ietf.org/html/rfc6749
• [RFC7515] JSON Web Signature (JWS) . M. Jones; J. Bradley; N. Sakimura. IETF. May 2015. Proposed Standard. URL: https://tools.ietf.org/html/rfc7515 https://tools.ietf.org/html/draft-ietf-tram-stunbis
• [RFC7635] Session Traversal Utilities for NAT (STUN) Extension for Third-Party Authorization . T. Reddy; P. Patil; R. Ravindranath; J. Uberti. IETF. August 2015. Proposed Standard. URL: https://tools.ietf.org/html/rfc7635

Any changes in requirements?

N/A

Wide Review of substantive changes

The Working Group assessed that none of the substantive changes affected previous reviews of the spec given their low-level nature The Working Group incorporated a proposed addition from the APA Working Group describing accessibility considerations https://github.com/w3c/webrtc-pc/pull/2328

Issues status

All substantive issues have been resolved (with a couple necessitating a bit more of editorial work, but whose substance is agreed, and whose outcome is uncontroversial) https://github.com/w3c/webrtc-pc/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aopen+-label%3AEditorial++-label%3A%22WebRTC+NV%22

Formal Objections

N/A

Any changes in implementation information?

Implementations have significantly converged since the previous Candidate Recommendation; once this updated CR is published, the group will focus its efforts on the implementation report.

Deadline for further comments

1 month after publication

Any changes in patent disclosures?

N/A

[swickr]

Transition approved.

Please update the [WEBSOCKETS-API] and [webmessaging] references to the WHATWG HTML LS spec.

[xueyuanjia]

Draft transition approved.