Re: WGLC: draft-ietf-appsawg-http-forwarded-02.txt - section 5.1

[Willy Tarreau <[e-mail]>]

On Mon, May 14, 2012 at 01:55:54PM +0200, Andreas Petersson wrote:
> On Sun, 6 May 2012 07:51:04 +0200
> Willy Tarreau <[e-mail]> wrote:
> > I'm used to see a similar thing at places where front SSL-offload caches
> > are installed. The instance name which receives the connection is named
> > in requests going to the backend servers, and it holds the name of the
> > application or of the customer, which is a 1:1 association from the
> > listening ip:port. I too think that we should allow a slightly larger
> > alphabet to permit "[:._-]" and possibly a few other characters. Some
> > people might also want to name the incoming interface on transparent
> > intercepting proxies. It's likely that the few chars above are enough
> > to unambiguously name network interfaces.
> > 
> > Given that the underscore has a special meaning when stated first, we
> > could have the chars above only allowed after a first ALPHANUM character.
> > 
> > What do others think ?
> 
> I think it would be enough to say they are only valid in obfnode and
> obfport. obfnode and obfport always starts with "_". It should also be
> noted that the use of "[:]" requires the value to be quoted.

That's a good point. I must say I've never seen a Location or Referer
header being quoted despite their wide use of "[/:]" which are marked
as special chars. I'll raise a new issue on this subject.

Willy