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Re: [hybi] I-D Action:draft-ietf-hybi-thewebsocketprotocol-01.txt

Ian Fette (イアンフェッティ) <ifette@google.com> Thu, 02 September 2010 00:10 UTC

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Date: Wed, 01 Sep 2010 16:37:59 -0700
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From: "Ian Fette (イアンフェッティ)" <ifette@google.com>
To: John Tamplin <jat@google.com>
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Subject: Re: [hybi] I-D Action:draft-ietf-hybi-thewebsocketprotocol-01.txt
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+1. Adam, I share your concerns about versions on the web, but the reality
is there is no other way right now. Suggestions welcome as to alternatives.

On Sep 1, 2010 4:27 PM, "John Tamplin" <jat@google.com> wrote:
> On Wed, Sep 1, 2010 at 7:18 PM, Greg Wilkins <gregw@webtide.com> wrote:
>> my proposal was not to add versioning to the protocol - as I know some
>> think it is an anti pattern.
>>
>> I just want to be able to implement the next draft without breaking
>> all my users that have been working on the last draft.   So my
>> proposal is only for a draft version to be added by implementers as
>> non-standard convenience at this time. The lack of a draft version can
>> be taken to mean the final stable version.
>>
>> How else do you expect servers to track the drafts and deal with the
>> various browser implementations out there?
>
> The problem is that the framing of v75, v76, v00, and v01 are
> incompatible. If you want to write a server that interoperates with
> browsers implementing these drafts (I know at least v75 and v76 are in
> the wild), then you have to rely on heuristics to figure out which one
> you are talking to. Even if there isn't a version in the 1.0 spec,
> any attempt to get real-world data while the spec is changing means
> you either have a version number or you heuristically determine one --
> the latter is obviously more prone to error.
>
> I would suggest adding Sec-WebSocket-Draft: 01 to implementations of
> this draft, and that header will only be present before the spec is
> finalized.
>
> --
> John A. Tamplin
> Software Engineer (GWT), Google
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