Re: [hybi] [Technical Errata Reported] RFC6455 (3433)

On 21/12/2012 04:41, Takeshi Yoshino wrote:
> +1
>
> Both "If multiple ..." and "However, the ..." were added from 
> https://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-14.
>
> In the release note by Alexey 
> (http://www.ietf.org/mail-archive/web/hybi/current/msg08863.html), it's said
> > Clarified that some header fields can appear multiple times. (per WG 
> discussion)
>
> This is the thread where the decision was made (multiple headers are 
> allowed)
> http://www.ietf.org/mail-archive/web/hybi/current/msg08690.html
>
> I think it was just cut n' pasted but left not updated. IIRC, we 
> didn't have any discussion to add asymmetric constraints like this.
>
> There were similar bug which was fixed on -15 release.
> http://www.ietf.org/mail-archive/web/hybi/current/msg09057.html

Thanks, Takeshi. I agree that the erratum should be approved.

> Takeshi
>
>
> On Fri, Dec 21, 2012 at 9:02 AM, RFC Errata System 
> <rfc-editor@rfc-editor.org <mailto:rfc-editor@rfc-editor.org>> wrote:
>
>
>     The following errata report has been submitted for RFC6455,
>     "The WebSocket Protocol".
>
>     --------------------------------------
>     You may review the report below and at:
>     http://www.rfc-editor.org/errata_search.php?rfc=6455&eid=3433
>
>     --------------------------------------
>     Type: Technical
>     Reported by: Eric Lawrence <e_lawrence@hotmail.com
>     <mailto:e_lawrence@hotmail.com>>
>
>     Section: 11.3.2
>
>     Original Text
>     -------------
>     However, the |Sec-WebSocket-Extensions| header field MUST NOT
>     appear more than once in an HTTP response.
>
>
>     Corrected Text
>     --------------
>     The |Sec-WebSocket-Extensions| header field MAY appear multiple
>     times in an HTTP response (which is logically the same as a single
>     |Sec-WebSocket-Extensions| header field that contains all values).
>
>
>     Notes
>     -----
>     Section 4.2.2 Step 5 subpart 6 (top of page 25) clearly explains
>     that this header field may appear multiple times in the server's
>     response: "If multiple extensions are to be used, they can all be
>     listed in a single |Sec-WebSocket-Extensions| header field or
>     split between multiple instances of the |Sec-WebSocket-Extensions|
>     header field. This completes the server's handshake..."
>
>     Instructions:
>     -------------
>     This errata is currently posted as "Reported". If necessary, please
>     use "Reply All" to discuss whether it should be verified or
>     rejected. When a decision is reached, the verifying party (IESG)
>     can log in to change the status and edit the report, if necessary.
>
>     --------------------------------------
>     RFC6455 (draft-ietf-hybi-thewebsocketprotocol-17)
>     --------------------------------------
>     Title               : The WebSocket Protocol
>     Publication Date    : December 2011
>     Author(s)           : I. Fette, A. Melnikov
>     Category            : PROPOSED STANDARD
>     Source              : BiDirectional or Server-Initiated HTTP
>     Area                : Applications
>     Stream              : IETF
>     Verifying Party     : IESG
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