[Web API] HTTP(S) schemes in the WebSocket constructor

[annevk]

EDIT FYI, turned this into an FF tracking bug

Acceptance criteria

• The listed features are documented sufficiently on MDN
• BCD is updated
• Interactive example and data repos are updated if appropriate
• The content has been reviewed as needed

For folks helping with Firefox related documentation

• Set bugs to dev-doc-complete
• Add entry to Firefox release notes for enabled/preview features
• Add/remove entry to Firefox experimental features page for preference/released features

Features to document

See whatwg/websockets#45

Related Gecko bugs

https://bugzilla.mozilla.org/show_bug.cgi?id=1797449

Other

• Check content open issues to see if any pertain to the subject matter. If there are any that can be closed because of the work, do so. If there are any that can be fixed relatively quickly because of the knowledge from completing this issue and you have time, feel free to go ahead and fix them.

[hamishwillee]

MDN generally doesn't document until there is an implementation (there are bugs in lined whatwg item). I added the forlater tag, but not sure how that turns into an action to doc. If not before, we'll get to it when an FF bugzilla gets added for this with an implementation.

[annevk]

WebKit has an implementation on main, FWIW.

[Meir017]

Chrome shipped this in 125 - https://chromestatus.com/feature/5848709993857024

[Josh-Cena]

This has been implemented in all browsers.

[Josh-Cena]

@mdn/core-yari-content I'm not sure whether this is missed in the FF 124 release project unintentionally but I think this should be documented as an FF new feature.

[hamishwillee]

Thanks @Josh-Cena - moved it to the project. Missed because the bugzilla issue wasn't tagged as needing dev docs.

[hamishwillee]

Status:

• BCD WebSocket constructor support for http(s) and relative URLs browser-compat-data#24218
• Docs
  • WebSocket() allows HTTP/HTTPS/relative URL #35588
  • HTTP Sec-WebSocket-* headers #35606
• release note FF124Relnote - WebSocket constructor HTTP(s) and relative URL #35590
• dev-docs-complete