[whatwg] Why deflate-stream is required to be enabled by the WebSocket API?
w3c at adambarth.com
Wed Jul 20 17:43:22 PDT 2011
On Wed, Jul 20, 2011 at 5:38 PM, Bjoern Hoehrmann <derhoermi at gmx.net> wrote:
> * Adam Barth wrote:
>>On Wed, Jul 20, 2011 at 4:56 PM, Bjoern Hoehrmann <derhoermi at gmx.net> wrote:
>>> There is draft-tyoshino-hybi-websocket-perframe-deflate for that. It's
>>> not a solution to the problem Takeshi Yoshino raised though, which is
>>> about whether Websocket API conformance should impose restrictions on
>>> which Websocket extensions must and must not be supported, as far as I
>>> understand it anyway.
>>It seems pretty clear that the API specify whatever profile of the
>>protocol we choose. We do the same thing with HTTP (e.g., with the
> HTTP allows you to send messages with `Transfer-Encoding: gzip,chunked`.
> Opera supports that in responses, most other browsers do not. The XML-
> HttpRequest specification takes no position on that, you can conform to
> it whether the XMLHttpRequest implementation supports that or not. The
> browsers do agree on supporting `Content-Encoding: gzip`, but again the
> XMLHttpRequest specification does not require or prohibit supporting it.
XMLHttpRequest imposes restrictions on the HTTP transport that are not
imposed by HTTP itself. I don't see any reason why an API can't
restrict the protocol elements generated through the use of the API.
You can argue whether we should impose those restrictions, but we
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