Intent to Experiment: WebRTC Data Channel: SCTP Negotiation Acceleration Protocol

[Philipp Hancke]

Contact emails

gui...@google.com, philipp...@googlemail.com, boi...@google.com, jub...@openai.com

Explainer

No information provided

Specification

https://datatracker.ietf.org/doc/draft-hancke-tsvwg-snap

Summary

WebRTC Data Channels use the Stream Control Transmission Protocol (SCTP) over a Datagram Transport Layer Security (DTLS) association.

The standard SCTP connection establishment requires a handshake that introduces latency.

A new Internet draft specifies a method to accelerate the datachannel establishment by embedding the SCTP initialization parameters within the Session Description Protocol (SDP) offer/answer exchange.

This reduces the time required to open a data channel by up to two network round-trip times.

Blink component

Blink>WebRTC>DataChannel

Web Feature ID

webrtc

TAG review

n/a, part of WebRTC covered by IETF drafts

TAG review status

Not applicable

Goals for experimentation

This feature should be gated until the IETF has had a chance to adopt the current draft into a WG and we know whether changes will be required.

Risks

Interoperability and Compatibility

No information provided

Gecko: No signal

WebKit: No signal

Web developers: No signals

Other signals:

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?

No information provided

Ongoing technical constraints

No information provided

Debuggability

No information provided

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?

Yes

Is this feature fully tested by web-platform-tests?

No

Flag name on about://flags

No information provided

Finch feature name

WebRtcSctpSnap

Non-finch justification

No information provided

Requires code in //chrome?

False

Tracking bug

https://issues.webrtc.org/issues/426480601

Measurement

The UMA WebRTC.PeerConnection.NegotiatedSctpSnap is measured at connection setup, allowing measurement of the percentage of connections using the feature.

Estimated milestones

Origin trial desktop first	151
Origin trial desktop last	156

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5137946677215232?gate=5354650258767872

This intent message was generated by Chrome Platform Status.

[Yoav Weiss (@Shopify)]

LGTM to experiment M151-M156 inclusive.

--
You received this message because you are subscribed to the Google Groups "blink-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+...@chromium.org.
To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CADxkKiJJzDXOUwYx%3DznrQz1hPkZCZnNWOAucF%2BK%3DoSymgGyDFA%40mail.gmail.com.