W3C home > Mailing lists > Public > w3c-wai-er-ig@w3.org > February 1999

Re: RFC for mediator warnings

From: Daniel Dardailler <danield@w3.org>
Date: Sun, 28 Feb 1999 23:44:35 +0100
Message-Id: <199902282244.XAA23774@www47.inria.fr>
To: "Silas S. Brown" <ssb22@cam.ac.uk>
cc: w3c-wai-er-ig@w3.org, ping@lfw.org

> Please could someone make this an RFC or something?  (My access gateway 

I'm not sure what you mean by "make an RFC".

W3C doesn't make RFC in any case, IETF does.

Regarding your proposed extension, I suggest you look at the 
HTTP extension framekwork that the W3C HTTP team has been working on
and proposing to IETF recently.


> ====================================================================
> Standard for Mediator Warnings
> (Proposed by Silas Brown, 28th February 1999)
> A "mediator" is defined as any program that acts as a proxy (whether or 
> not it is actually implemented as a proxy) with the purpose of modifying
> HTML in some way.  This standard enables HTML documents to embed warning 
> messages for users of specific mediators.  Mediators conforming to this 
> standard should add these warning messages at the top of the page; other 
> mediators and normal browsers should ignore them.
> An example of its use is that a mediator can embed a message for itself 
> or for other mediators, warning about redundancy, but there is nothing 
> to stop messages from being embedded in static documents.
> A MIME header can contain an arbitrary number of X-Mediator-Warning 
> lines.  The syntax of each line is:
> X-Mediator-Warning: name=message
> where 'name' is the canonical name of the mediator and 'message' is the 
> message that this mediator should display.  Any mediator that supports 
> this standard should add its canonical name to the MIME header of any 
> page it returns, using the following syntax:
> X-Mediator-Name: name
> Canonical names are not case sensitive.  They are formed from ASCII 
> characters between 33 and 126 inclusive, except 61 (the '=' sign).  
> No spaces may be added before the '=' sign.
> Both of these can also be done in the HEAD of the document itself, using 
> META tags, as follows:
> <META HTTP-EQUIV="X-Mediator-Warning" CONTENT="name=message">
> <META HTTP-EQUIV="X-Mediator-Name" CONTENT="name">
> None of the above is case sensitive.
> Notes:
> 1.  It is left unspecified whether or not messages may contain HTML 
> tags, since this depends on the context of the mediator.  This standard 
> does not guarantee that mediators implementing it will leave HTML tags 
> untouched, or even process them sensibly.
> 2.  Messages are unformatted.  It is assumed that, if several 
> X-Mediator-Warning lines are present, each one is a different warning.  
> You should not begin a new X-Mediator-Warning line to insert a line 
> break.
> ====================================================================
> Regards
> -- Silas S Brown, St John's College Cambridge UK http://epona.ucam.org/~ssb22/
> "Anyone inexperienced puts faith in every word, but the shrewd one
>  considers his steps" - Proverbs 13:16
Received on Sunday, 28 February 1999 17:44:43 UTC

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