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Re: I-D Action: draft-ietf-httpbis-tunnel-protocol-00.txt

Mark Nottingham <mnot@mnot.net> Wed, 20 August 2014 01:15 UTC

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From: Mark Nottingham <mnot@mnot.net>
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Date: Wed, 20 Aug 2014 11:12:39 +1000
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Subject: Re: I-D Action: draft-ietf-httpbis-tunnel-protocol-00.txt
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On 20 Aug 2014, at 11:09 am, Greg Wilkins <gregw@intalio.com> wrote:

> 
> Mark,
> 
> thanks for those links.
> 
> I think the document itself needs to be a bit stronger on the intended usage of the header.  Currently it reads that this header field can be sent by a client and that it can be ignored by the proxy.

That's the intent.

> Perhaps it should be little bit stronger and say that a proxy MAY (SHOULD?) consider this header when deciding to create a tunnel or not.

We can't retroactively require proxies to pay attention to a header; it's up to them. This header is merely enabling those proxies who choose to act upon the header. 

(Yes, that corresponds to MAY, but we try to avoid overusing it, else our documents get filled with MAYs. It's not really a conformance requirement, it's just a statement.)

Cheers,


> 
> cheers
> 
> 
> 
> 
> 
> 
> 
> 
> On 20 August 2014 10:45, Mark Nottingham <mnot@mnot.net> wrote:
> Greg,
> 
> See:
>   https://httpwg.github.io/wg-materials/ietf90/IETF90_draft-hutton-httpbis-connect-protocol.pdf
>   https://github.com/httpwg/wg-materials/blob/gh-pages/ietf90/minutes.md#draft-hutton-httpbis-connect-protocol
> 
> Cheers,
> 
> 
> On 20 Aug 2014, at 10:40 am, Greg Wilkins <gregw@intalio.com> wrote:
> 
> > Mark,
> >
> > Is there a specific use-case motivating this additional header?   ie are there situations that a proxy can use this to do more than just log/debug a tunnel?
> >
> > I'm certainly not opposed to having the additional information that this header provides, but I'd like to know what advantage there is for a client to include the header.  If there is none, then it is not likely to be sent.
> >
> > cheers
> >
> >
> >
> >
> >
> > --
> > Greg Wilkins <gregw@intalio.com>
> > http://eclipse.org/jetty HTTP, SPDY, Websocket server and client that scales
> > http://www.webtide.com  advice and support for jetty and cometd.
> 
> --
> Mark Nottingham   https://www.mnot.net/
> 
> 
> 
> 
> -- 
> Greg Wilkins <gregw@intalio.com> 
> http://eclipse.org/jetty HTTP, SPDY, Websocket server and client that scales
> http://www.webtide.com  advice and support for jetty and cometd.

--
Mark Nottingham   https://www.mnot.net/

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