# URL equality

Jared_Rhine@hmc.edu
Thu, 31 Mar 1994 13:13:15 -0800

- Messages sorted by: [ date ][ thread ][ subject ][ author ]
- Next message: Tim Berners-Lee: "URIs in WWW"
- Previous message: Ronald E. Daniel: "A modest suggestion for the URN->URL service"

    Date: Thu, 31 Mar 1994 13:13:15 -0800

    Message-Id: <199403312113.NAA17573@osiris.ac.hmc.edu>

    From: Jared_Rhine@hmc.edu

    To: URI mailing list <uri@bunyip.com>,

    Subject: URL equality

[discussing how to define URL equality via the URL syntax]

Larry> the same host might have multiple DNS names, or that some FTP servers
Larry> allow case insensitive file names, any number of actual equivalences,
Larry> symbolic links, etc.

Dan> None of these things should be part of the URL spec. [...] Given the
Dan> definition of equality I proposed, http://host:80/ is different from
Dan> http://host/. The fact that they resolve to the same thing is not part
Dan> of the URL spec.

I must agree that we should avoid burdening the syntax with any conception
of equality beyond string equality. In the long run, if one wished to
checked for equality, one should check the associated URNs/URSNs.

If two URLs point to the same resource, all that signifies is there are two
ways to access the resource (two _locations_, if you will). URLs should be
concerned (almost) exclusively with access, not naming.

    --
    Jared Rhine         Jared_Rhine@hmc.edu
    wibstr              Harvey Mudd College
                        http://www.hmc.edu/www/people/jared.html

    "To hear many religious people talk, one would think God created the
     torso, head, legs and arms, but the devil slapped on the genitals."
            -- Don Schrader

- Next message: Tim Berners-Lee: "URIs in WWW"
- Previous message: Ronald E. Daniel: "A modest suggestion for the URN->URL service"