W3C home > Mailing lists > Public > public-credentials@w3.org > February 2018

Re: DID 'service' ABNF

From: =Drummond Reed <drummond.reed@evernym.com>
Date: Sat, 17 Feb 2018 16:51:06 -0700
Message-ID: <CAAjunnZTNw5Esp5UvuNf+JfSSy+6QoN+em5S4dKvcPxKUyV4eQ@mail.gmail.com>
To: Manu Sporny <msporny@digitalbazaar.com>
Cc: W3C Credentials CG <public-credentials@w3.org>
On Fri, Feb 16, 2018 at 10:18 AM, Manu Sporny <msporny@digitalbazaar.com>

> Hey Drummond,
> After much friendly yelling back and forth at DB HQ :), I think Dave
> Longley has convinced me that I'm overly concerned about the service ABNF.
> I still feel uneasy about it, but I think the onus is on those of us
> that are concerned to provide concrete examples of where everything
> falls apart and for those that are not concerned to demonstrate why the
> examples are not a problem.

Yes, let's do this.

> Let's get this into an issue and take the conversation from there, but
> I'm less against the concept than I was yesterday, and here's why:
> The argument that was most compelling to me was that the service
> description goes in the "authority" section of the DID URL:
> did:METHOD:AUTHORITY?query2=param2&query2=param2#fragment
> Where AUTHORITY contains the service description. While ChristopherA is
> correct that things after METHOD are typically the purview of the
> AUTHORITY section, we're making an exception in this case because things
> starting at the path are typically service specific. So, we're basically
> saying, if you're going to do services in your DID Method, you MUST do
> them in this way... and we're putting that at the DID Spec layer.


> Again, I find this a bit sloppy,

Ironically, having worked on URI-based specs (RFC 3986) for 15 years now, I
find it very elegant. But explaining why is probably more easily discussed
in person at RWOT.

> but don't have a better suggestion. We
> do what I was suggesting, which was to use ? or & because those
> typically go in a path AFTER the AUTHORITY section.


> In any case, we need more examples of services and non-services
> expressed through a DID before we can really reach a conclusion on this.

Happy to help prepare some to go over on the list or on RWOT.


> -- manu
> --
> Manu Sporny (skype: msporny, twitter: manusporny, G+: +Manu Sporny)
> Founder/CEO - Digital Bazaar, Inc.
> blog: The State of W3C Web Payments in 2017
> http://manu.sporny.org/2017/w3c-web-payments/
Received on Saturday, 17 February 2018 23:52:55 UTC

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