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Re: Minimizing/avoiding User-Agent, was: SPDY Header Frames

From: Poul-Henning Kamp <phk@phk.freebsd.dk>
Date: Tue, 17 Jul 2012 21:10:22 +0000
To: Karl Dubost <karld@opera.com>
cc: Julian Reschke <julian.reschke@gmx.de>, HTTP Working Group <ietf-http-wg@w3.org>
Message-ID: <61428.1342559422@critter.freebsd.dk>
In message <98E713A5-3869-438A-B3D3-5C9DA580DD67@opera.com>, Karl Dubost writes

>GET / HTTP/1.1
>Host: www.example.org
>Capabilities: <http://example.com/acmeCom/new/shiny/browser/23>

>* Some business will be abandoned. Databases will not be updated.
>  Future fail

Too bad ?  It's not like User-Agent strings are always correct

>* The cache system will not be maintained. future fail.

We cannot out-standardize incompetence.

>* Some scripts will use the URL-ID (new useragent string) to block,
>  filter, redirect.

And what is the harm in this ?  If it works, it works, if it doesn't
work, it only hurts the website which took the shortcut...

>Basically exactly back to the same situation we have today.

With one very big difference:  We stop the User-Agent string
from growing another 10 characters every year...

I still think it is a very superior solution to User-Agent,
but it can obviously be modified in various ways to address
some of the concerns you raise (make it IANA registry, 
make it an ISO OID, make a repository for the files etc.)

But given that there is stuff and standards to levarage from
WAP I think we should just make it an URL and leave the
problems to other people to solve.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
Received on Tuesday, 17 July 2012 21:10:44 UTC

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