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Re: Prototype Accessibility Proxy (RE: Accessibility Proxy seeks interested ISPs)

From: Charles McCathieNevile <charles@w3.org>
Date: Tue, 23 Apr 2002 09:02:16 -0400 (EDT)
To: Nick Kew <nick@webthing.com>
cc: <w3c-wai-ig@w3.org>
Message-ID: <Pine.LNX.4.30.0204230900460.31859-100000@tux.w3.org>
Hi Nick,

is it possible to point the browser directly at it and have it rewrite links
to point them to the proxy explicitly? (the tablin service does this as a way
of dealing with the proxying question)



On Tue, 23 Apr 2002, Nick Kew wrote:

  Nick Kew

  Available for contract work - Programming, Unix, Networking, Markup, etc.

  On Fri, 19 Apr 2002, Nick Kew wrote:

  > On Fri, 19 Apr 2002, SHARPE, Ian wrote:
  > [chop]

  > That I'll take as a challenge!  I'm busy all day tomorrow and much of
  > Sunday, but I shall try and find some time for hacking it next week.

  OK, I've put up a prototype based on a days hacking with mod_xml.
  It's a demo of concept, and I still have lots of debugging to do,
  but it should nevertheless help improve many pages.  Comments will
  be welcome, especially from users of assistive technologies.

  What is does (bugs permitting:-)

  1. Normalises HTML by inserting all optional tags
  2. Strips deprecated presentational markup
  3. Linearises Frames

  I have a number of further ideas that remain TBD.

  What it explicitly doesn't do:

  1. It will refuse to serve any non-text data.  This is because I'm
     leaving a proxy wide open, and I *really* don't want it becoming
     anyone's gateway to porno-stuff!
  2. It only supports HTTP, not FTP, HTTPS, etc.
  3. There are no workarounds for broken servers or broken browsers.

  Known bugs:

  1. It is capable of generating invalid HTML
  2. It gets some relative URLs wrong (to be investigated tomorrow:-)

  How to test-drive it:

  Just set your HTTP proxy to http://valet.webthing.com:8000/ and browse -
  especially pages whose HTML markup presents accessibility problems.
  Let me know if it does (or doesn't) help.  Especially, let me know
  if it fails altogether.

  Note - setting your HTTP proxy may fail, if your ISP or network admin
  forces you to use their own proxy.  I can't do anything about that.

  > Heh!  OK, when I've put up a demo, you can show me how to accomplish
  > the same thing at the Client.  Oh, and if your solution requires
  > equipment that is going to cost over $100 up-front to the blind user -
  > many of whom are not rich - then that doesn't count!

  This is a first-pass demo of the idea.  Comments invited!

Charles McCathieNevile    http://www.w3.org/People/Charles  phone: +61 409 134 136
W3C Web Accessibility Initiative     http://www.w3.org/WAI  fax: +33 4 92 38 78 22
Location: 21 Mitchell street FOOTSCRAY Vic 3011, Australia
(or W3C INRIA, Route des Lucioles, BP 93, 06902 Sophia Antipolis Cedex, France)
Received on Tuesday, 23 April 2002 09:03:21 UTC

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