Re: [hybi] OPTIONS (was Re: It's time to ship)

"Roy T. Fielding" <fielding@gbiv.com> Mon, 10 January 2011 00:40 UTC

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From: "Roy T. Fielding" <fielding@gbiv.com>
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Date: Sun, 9 Jan 2011 16:42:28 -0800
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References: <AANLkTim2VGfH2FiJ4iH85wYiuXNKQ1Arh1C1Kg4M58Fs@mail.gmail.com> <20110109224228.GU5743@1wt.eu> <AANLkTimE-qOhYXO35nBqRWp9ipF-pk_CsO-YrotAjYqX@mail.gmail.com> <20110109230229.GX5743@1wt.eu> <0311EE7A-4A32-4885-BC87-1541AA70A18B@apple.com> <AANLkTinMo8xqhkB08bY8no1y5-7+7isCm97or6icH=r5@mail.gmail.com> <4D2A4738.2000500@gmx.de>
To: Julian Reschke <julian.reschke@gmx.de>
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Cc: Hybi <hybi@ietf.org>
Subject: Re: [hybi] OPTIONS (was Re: It's time to ship)
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On Jan 9, 2011, at 3:39 PM, Julian Reschke wrote:

> On 10.01.2011 00:09, Adam Barth wrote:
>> ...
>> Whether we use OPTIONS or GET is much less than 1% of the value
>> proposition of the WebSockets protocol.  Rather than optimizing that
>> part of the protocol, it's more important to pick something and go
>> with it.
>> 
>> Honestly, I picked OPTIONS because it was the example given in
>> http://www.ietf.org/rfc/rfc2817.txt.
>> ...
> 
> OPTIONS isn't special with respect to Upgrade. (*)
> 
> My understanding is that the authors picked this example in order to avoid to let the server ignore the Upgrade request in GET, and then return the contents over an non-secured channel.
> 
> Unless there's a specific reason why people think OPTIONS is better than GET here, we should stick with what was discussed before.

OPTIONS is the appropriate method to use when the client
does not want the action taken to be retrieval of a
representation, especially when the resource might be
subject to hit counting (like an advertisement).

OPTIONS is preferred when you don't want the server to
provide an old-version response during an Upgrade, since
it has no negative implications for a compliant server.
Websocket should use OPTIONS for HTTP if it is not going
to mint a new method of its own.

....Roy