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REFUSED_STREAM => RETRY_STREAM (editorial) was: RE: hpack table size 0

From: <K.Morgan@iaea.org>
Date: Wed, 16 Jul 2014 13:44:17 +0000
To: <mnot@mnot.net>
CC: <Michael.Bishop@microsoft.com>, <ietf-http-wg@w3.org>
Message-ID: <0356EBBE092D394F9291DA01E8D28EC201187F4582@SEM002PD.sg.iaea.org>
On Tuesday,01 July 2014 09:15, mnot@mnot.net<mailto:mnot@mnot.net> wrote:

> On 1 Jul 2014, at 1:46 am, K.Morgan@iaea.org<mailto:K.Morgan@iaea.org> wrote:

>> How does the client know to retry the stream?  The spec never mentions

>> that a client should retry.

>

> This spec doesn't, but HTTP does...

>   <http://httpwg.github.io/specs/rfc7230.html#persistent.retrying.requests>

>

> That said, the layering here needs some cleaning up. We could either re-specify

> this in HTTP/2, or make it clear when we re-factor 7230 to go to full Standard.

>

> The latter is on the agenda for Toronto...



I would like to propose renaming REFUSED_STREAM to RETRY_STREAM.



IMO, REFUSED_STREAM doesn’t match the definition of the word “refused” because there is a time component i.e. the server decided, for whatever reason, to not accept the stream *right now*, but you can try again later.



refuse /rɪˈfjuːz/

verb

past tense: refused; past participle: refused

     indicate or show that one is not willing to do something. [1]



From Section 7 [2]:

REFUSED_STREAM (0x7):  The endpoint refuses the stream prior to performing any application processing, see Section 8.1.4<http://http2.github.io/http2-spec/#Reliability> for details.



From Section 8.1.4 (emphasis added) [2]:

The REFUSED_STREAM error code can be included in a RST_STREAM frame to indicate that the stream is being closed prior to any processing having occurred. Any request that was sent on the reset stream can be safely retried.

…

Requests that have not been processed have not failed; clients MAY automatically retry them, even those with non-idempotent methods.





Proposed change:

RETRY_STREAM (0x7):  The endpoint closed the stream prior to performing any application processing.  Any request that was sent on the reset stream can be safely retried, see Section 8.1.4<http://http2.github.io/http2-spec/#Reliability> for details.







[1] https://www.google.at/


[2] http://http2.github.io/http2-spec/#ErrorCodes


[3] http://http2.github.io/http2-spec/#Reliability








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Received on Wednesday, 16 July 2014 13:44:54 UTC

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