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Re: Design Issue: Which frames are allowed to reference Stream ID #0 and which aren't?

From: James M Snell <jasnell@gmail.com>
Date: Sat, 27 Apr 2013 13:31:47 -0700
Message-ID: <CABP7RbeJAwkS03YsmhC1VB1b3Ln+BqA50wnfmAmxMCPqF2nbLg@mail.gmail.com>
To: Martin Thomson <martin.thomson@gmail.com>
Cc: "ietf-http-wg@w3.org" <ietf-http-wg@w3.org>
Ok, I have a pending push request that addresses these items.

On Fri, Apr 26, 2013 at 11:38 AM, Martin Thomson
<martin.thomson@gmail.com> wrote:
> On 26 April 2013 11:28, James M Snell <jasnell@gmail.com> wrote:
>> One can look at the various frame types and determine which are
>> obviously intended for use with streams and which are for the session
>> but we need to be clear on exactly what happens when various types of
>> frames reference Stream ID #0.
>> For instance, if a DATA frame reference Stream ID #0, I would say that
>> the result MUST be a protocol error. (Likewise with HEADERS frames)
> DATA on stream 0 is an error, we need to make that clear.
>> Likewise, what exactly does it mean for a PING Frame to specify a
>> Stream Identifier? Or are all PING Frames required to use Stream ID
>> #0?
> PING on non-stream 0 is an error.  The problem there is that PING
> demands a PONG and you cannot know whether it is possible for the peer
> to do that.
Received on Saturday, 27 April 2013 20:32:34 UTC

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