[OpenID] HTML-Based Discovery incompatibilities

[Andrew Arnott]

True.  You and I don't need <link> tags with the OpenID URI and can write
XRDS docs.  But if you want the average user to be able to set up a vanity
URL, they need those simpler tags.
My parents and sisters, who know almost nothing about HTML, still manage to
keep blogs on Blogger.  They could, with help, add two LINK tags to their
blog to managed their own OpenIDs, but they could not be expected to author
an XRDS doc.  And even if they could, where would they host it?  Blogger
doesn't allow hosting of arbitrary files like that.  Nor would the
Content-Type HTTP response header likely be the correct one for said XRDS
doc.

--
Andrew Arnott
"I [may] not agree with what you have to say, but I'll defend to the death
your right to say it." - Voltaire


On Thu, Jan 8, 2009 at 9:16 AM, Eran Hammer-Lahav <eran at hueniverse.com>wrote:

>  It is. I am just saying we don't need so many options (like <link>
> elements with the OpenID URI). Simply point everything to just an XRDS file.
>
>
>
> EHL
>
>
>
> *From:* Andrew Arnott [mailto:andrewarnott at gmail.com]
> *Sent:* Thursday, January 08, 2009 9:04 AM
> *To:* Eran Hammer-Lahav
> *Cc:* Chris Messina; general at openid.net List
> *Subject:* Re: [OpenID] HTML-Based Discovery incompatibilities
>
>
>
> Eran,
>
>
>
> Maybe I misunderstand you, but isn't adding a link to your XRDS file from
> HTML in fact one aspect of HTML discovery?
>
>
>
> I mean, html discovery can result in an XRDS doc reference, finding
> openid.server (et. al) tags, or nothing at all.
> --
> Andrew Arnott
> "I [may] not agree with what you have to say, but I'll defend to the death
> your right to say it." - Voltaire
>
>  On Thu, Jan 8, 2009 at 8:55 AM, Eran Hammer-Lahav <eran at hueniverse.com>
> wrote:
>
> I would like to see HTML-Based discovery removed from the spec completely.
> There is no reason to have it anymore since you can simply add a link to
> your XRDS file from HTML and get it all done there in a consistent way.
>
>
>
> In my upcoming discovery spec I spell out that resource-consumers must
> support multiple values in the rel attribute.
>
>
>
> EHL
>
>
>
> *From:* general-bounces at openid.net [mailto:general-bounces at openid.net] *On
> Behalf Of *Chris Messina
> *Sent:* Thursday, January 08, 2009 12:59 AM
> *To:* general at openid.net List
> *Subject:* [OpenID] HTML-Based Discovery incompatibilities
>
>
>
> I just read over SS 7.3.3 on HTML-Based Discovery [1], and considering my
> experience today trying to re-delegate my OpenID, I've discovered that this
> section needs to updated a clarified.
>
> It turns out that relying parties are not parsing HTML rel values in a
> standard way. That is, if there is more than one rel value provided for a
> link, some RPs fail, whereas others work fine.
>
> In other words, this:
>
>    <link rel="openid2.provider openid.server" href="
> http://factoryjoe.com/blog/" />
>    <link rel="openid2.local_id openid.delegate" href="
> http://factoryjoe.com/blog/" />
>
> is not the same as this:
>
>    <link rel="openid2.provider" href="
> http://factoryjoe.com/blog/?openid_server=1" />
>    <link rel="openid2.local_id" href="
> http://factoryjoe.com/blog/author/factoryjoe/" />
>    <link rel="openid.server" href="
> http://factoryjoe.com/blog/?openid_server=1" />
>    <link rel="openid.delegate" href="
> http://factoryjoe.com/blog/author/factoryjoe/" />
>
> It's my understanding that the rel attribute should be able to contain
> several values.
>
>
>
> But I can tell you that IntenseDebate, for example, failed when delegation
> was setup using the former code. It only worked when I broke out the two
> links into four.
>
>
>
> I'm not sure if this is an issue with the libraries or what, but I'd like
> to know if other people have experienced this problem, and if we can improve
> the language in the spec to make sure that people understand that they need
> to look for the presence of an element in a rel value -- not that the
> *entire* value is one element.
>
>
>
> Chris
>
> [1] http://openid.net/specs/openid-authentication-2_0.html#html_disco
>
> --
> Chris Messina
> Citizen-Participant &
>  Open Web Advocate-at-Large
>
> factoryjoe.com # diso-project.org
> citizenagency.com # vidoop.com
> This email is:   [ ] bloggable    [X] ask first   [ ] private
>
>
> _______________________________________________
> general mailing list
> general at openid.net
> http://openid.net/mailman/listinfo/general
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openid.net/pipermail/openid-general/attachments/20090108/2d1cf4cb/attachment-0002.htm>