Re: [Technical Errata Reported] RFC7230 (4667)
Mark Nottingham <mnot@mnot.net> Tue, 19 April 2016 06:23 UTC
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From: Mark Nottingham <mnot@mnot.net>
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Date: Tue, 19 Apr 2016 16:18:04 +1000
Cc: Roy Fielding <fielding@gbiv.com>, "Julian F. Reschke" <julian.reschke@greenbytes.de>, ben@nostrum.com, alissa@cooperw.in, aamelnikov@fastmail.fm, rousskov@measurement-factory.com, ietf-http-wg@w3.org
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Subject: Re: [Technical Errata Reported] RFC7230 (4667)
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I *think* we've come to a place where there's agreement on accepting the errata, but with BWS replacing OWS throughout; i.e.: chunk-ext = *( BWS ";" BWS chunk-ext-name [ BWS "=" BWS chunk-ext-val ] ) Everyone OK with that? If so -- Alexey, can we just annotate the errata with that when it's accepted, or should this one be rejected and a new (smaller and correct from the start) one be filed? Regards, > On 14 Apr 2016, at 2:05 AM, RFC Errata System <rfc-editor@rfc-editor.org> wrote: > > The following errata report has been submitted for RFC7230, > "Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing". > > -------------------------------------- > You may review the report below and at: > http://www.rfc-editor.org/errata_search.php?rfc=7230&eid=4667 > > -------------------------------------- > Type: Technical > Reported by: Alex Rousskov <rousskov@measurement-factory.com> > > Section: 4.1.1 > > Original Text > ------------- > chunk-ext = *( ";" chunk-ext-name [ "=" chunk-ext-val ] ) > > > Corrected Text > -------------- > chunk-ext = *( ";" OWS chunk-ext-name [ "=" chunk-ext-val ] ) > > Notes > ----- > The infamous "implicit *LWS" syntax rule in RFC 2616 allowed whitespace between ";" and chunk-ext-name in chunk-ext. Some HTTP agents generate that whitespace. In my experience, HTTP agents that can parse chunk extensions usually can handle that whitespace. Moreover, ICAP, which generally relies on HTTP/1 for its message syntax, uses that whitespace when defining the "ieof" chunk extension in RFC 3507 Section 4.5: > > \r\n > 0; ieof\r\n\r\n > > IMHO, RFC 7230 should either allow OWS before chunk-ext-name or at the very least explicitly document the HTTP/1 syntax change and its effect on parsers used for both ICAP and HTTP/1 messages (a very common case for ICAP-supporting HTTP intermediaries and ICAP services). > > I also recommend adding BWS around "=", for consistency and RFC 2616 backward compatibility reasons. HTTPbis RFCs already do that for transfer-parameter and auth-param that have similar syntax. > > Please also consider adding OWS _before_ ";" for consistency and RFC 2616 backward compatibility reasons. HTTPbis RFCs already do that for transfer-extension, accept-ext, t-ranking, and other constructs with similar syntax. > > If all of the above suggestions are applied, the final syntax becomes: > > chunk-ext = *( OWS ";" OWS chunk-ext-name [ BWS "=" BWS chunk-ext-val ] ) > > Instructions: > ------------- > This erratum 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. > > -------------------------------------- > RFC7230 (draft-ietf-httpbis-p1-messaging-26) > -------------------------------------- > Title : Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing > Publication Date : June 2014 > Author(s) : R. Fielding, Ed., J. Reschke, Ed. > Category : PROPOSED STANDARD > Source : Hypertext Transfer Protocol Bis APP > Area : Applications > Stream : IETF > Verifying Party : IESG > > -- Mark Nottingham https://www.mnot.net/
- Re: [Technical Errata Reported] RFC7230 (4667) Alex Rousskov
- Re: [Technical Errata Reported] RFC7230 (4667) Alexey Melnikov
- Re: [Technical Errata Reported] RFC7230 (4667) Alex Rousskov
- [Technical Errata Reported] RFC7230 (4667) RFC Errata System
- Re: [Technical Errata Reported] RFC7230 (4667) Willy Tarreau
- Re: [Technical Errata Reported] RFC7230 (4667) Mark Nottingham
- Re: [Technical Errata Reported] RFC7230 (4667) Willy Tarreau
- Re: [Technical Errata Reported] RFC7230 (4667) Roy T. Fielding
- Re: [Technical Errata Reported] RFC7230 (4667) Willy Tarreau
- Re: [Technical Errata Reported] RFC7230 (4667) Alex Rousskov
- Re: [Technical Errata Reported] RFC7230 (4667) Roy T. Fielding
- Re: [Technical Errata Reported] RFC7230 (4667) Alex Rousskov
- Re: [Technical Errata Reported] RFC7230 (4667) Willy Tarreau
- Re: [Technical Errata Reported] RFC7230 (4667) Amos Jeffries
- Re: [Technical Errata Reported] RFC7230 (4667) Alex Rousskov
- Re: [Technical Errata Reported] RFC7230 (4667) Alex Rousskov
- Re: [Technical Errata Reported] RFC7230 (4667) Willy Tarreau
- Re: [Technical Errata Reported] RFC7230 (4667) Alex Rousskov
- Re: [Technical Errata Reported] RFC7230 (4667) Mark Nottingham
- Re: [Technical Errata Reported] RFC7230 (4667) Alex Rousskov
- Re: [Technical Errata Reported] RFC7230 (4667) Willy Tarreau
- [Errata Verified] RFC7230 (4667) RFC Errata System