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[Technical Errata Reported] RFC7233 (4682)

RFC Errata System <rfc-editor@rfc-editor.org> Tue, 03 May 2016 22:46 UTC

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Subject: [Technical Errata Reported] RFC7233 (4682)
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The following errata report has been submitted for RFC7233,
"Hypertext Transfer Protocol (HTTP/1.1): Range Requests".

--------------------------------------
You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=7233&eid=4682

--------------------------------------
Type: Technical
Reported by: Kannan Goundan <kannan@cakoose.com>

Section: 2.1

Original Text
-------------
byte-range-set= 1#( byte-range-spec / suffix-byte-range-spec )

Corrected Text
--------------
According to the "1#element" rule, the expansion would be:

    byte-range-set = ( byte-range-spec /
        suffix-byte-range-spec ) *( OWS "," OWS ( byte-range-spec /
        suffix-byte-range-spec ) )

But Appendix D has the definition:

    byte-range-set = *( "," OWS ) ( byte-range-spec /
        suffix-byte-range-spec ) *( OWS "," [ OWS ( byte-range-spec /
        suffix-byte-range-spec ) ] )


Notes
-----
This is a followup to my original report: <http://www.rfc-editor.org/errata_search.php?rfc=7233&eid=4681>

My original report was incorrect because I didn't notice the difference between "1*element" and "1#element".  Thanks to Julian Reschke for pointing this out to me.

After looking up the "1#element" rule <https://tools.ietf.org/html/rfc7230#section-7>, it looks like Section 2.1 and Appendix D are more similar, but not exactly equivalent.

The Appendix D version of the rule seems to allow extra commas and OWS.  
I'm trying to write strict parsing code for this header and am not sure which definition to follow.

P.S. I hope I didn't screw up again.  I apologize for wasting your time (again) if I did.

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--------------------------------------
RFC7233 (draft-ietf-httpbis-p5-range-26)
--------------------------------------
Title               : Hypertext Transfer Protocol (HTTP/1.1): Range Requests
Publication Date    : June 2014
Author(s)           : R. Fielding, Ed., Y. Lafon, Ed., J. Reschke, Ed.
Category            : PROPOSED STANDARD
Source              : Hypertext Transfer Protocol Bis APP
Area                : Applications
Stream              : IETF
Verifying Party     : IESG

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