[fetch] Define the WebSocket subprotocol check as part of response validation (#242)

See https://github.com/whatwg/html/pull/840#discussion_r55568720 for discussion and context. Many
thanks to Simon Pieters for helping out.
You can view, comment on, or merge this pull request online at:

  https://github.com/whatwg/fetch/pull/242

-- Commit Summary --

  * Define the WebSocket subprotocol check as part of response validation

-- File Changes --

    M Overview.html (11)
    M Overview.src.html (11)

-- Patch Links --

https://github.com/whatwg/fetch/pull/242.patch
https://github.com/whatwg/fetch/pull/242.diff

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/fetch/pull/242