Hi there,
On 10/7/22 8:27 AM, Zhu, Jianjun wrote:
Contact emails
jianjun....@intel.com <mailto:jianjun....@intel.com>,
ri...@chromium.org <mailto:ri...@chromium.org>, nidhij...@chromium.org
<mailto:nidhij...@chromium.org>
Explainer
https://github.com/w3c/webtransport/blob/main/explainer.md
<https://github.com/w3c/webtransport/blob/main/explainer.md>
https://github.com/w3c/webtransport/issues/35
<https://github.com/w3c/webtransport/issues/35>
Are these the correct links? It seems to be about webtransport in
general, and I'm not sure how to interpret issue 35 (likely I'm just
missing a lot of context). Is there something close to an explainer for
BYOB readers?
Specification
https://www.w3.org/TR/webtransport <https://www.w3.org/TR/webtransport>
https://streams.spec.whatwg.org/#readablestreambyobreader
<https://streams.spec.whatwg.org/#readablestreambyobreader>
Summary
Support BYOB(bring-your-own-buffer) readers for WebTransport to allow
reading into a developer-supplied buffer. BYOB readers can minimize
buffer copies, as well as reduce memory allocations.
This feature aligns blink implementation with the WebTransport spec
(https://www.w3.org/TR/webtransport/#webtransportreceivestream-create).
The underlying source of blink::IncomingStream and
blink::DatagramDuplexStream are changed to UnderlyingByteSource to
support this feature.
Blink component
Blink>Network>WebTransport
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ENetwork%3EWebTransport>
TAG review
https://github.com/w3ctag/design-reviews/issues/669
<https://github.com/w3ctag/design-reviews/issues/669>
TAG review status
Not applicable
Risks
Interoperability and Compatibility
/Gecko/: Worth prototyping
(https://github.com/mozilla/standards-positions/issues/167
<https://github.com/mozilla/standards-positions/issues/167>) /WebKit/:
No signal /Web developers/: No signals
Could we request a WebKit signal please? Do we have any signals from
developers?
/Other signals/:
Activation
Developers can acquire a BYOB reader by calling getReader({ mode:
"byob" }) of a WebTransportDatagramDuplexStream.readable, or a
WebTransportBidirectionalStream.readable, or a WebTransportReceiveStream.
WebView application risks
This feature doesn’t change the behaviors of exiting APIs. Calling
getReader() without options returns a default reader.
Debuggability
This feature can be debugged with existing DevTools JavaScript debugger.
Will this feature be supported on all six Blink platforms
(Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
Yes
Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
Yes
Could you link to the wpt.fyi link please?
Flag name
Requires code in //chrome?
False
Tracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1259886
<https://bugs.chromium.org/p/chromium/issues/detail?id=1259886>
Sample links
https://github.com/w3c/webtransport/pull/415
<https://github.com/w3c/webtransport/pull/415>
Estimated milestones
108
Anticipated spec changes
No
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5948016536584192
<https://chromestatus.com/feature/5948016536584192>
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
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