Re: CPIM and URIs

At 08:43 AM 5/20/02 -0400, John D. Ramsdell wrote:
>Since CPIM defines URIs, I suggest that it include a reference to the
>relevant RFC on the subject.
>
>   Berners-Lee, T., R. Fielding, and L. Masinter, "Uniform Resource
>   Identifiers (URI): Generic Syntax", RFC 2396, August 1998.
>
>In addition, I am unclear about the issue of quoting.  As I understand
>RFC 2822 and RFC 2396,
>
>     "John D. Ramsdell"@mitre.org
>
>is a valid Email address, but
>
>     im:"John D. Ramsdell"@mitre.org
>
>is not a valid URI.  One must write
>
>     im:%22John%20D.%20Ramsdell%[email protected]
>
>instead.  Are IMPP IM and PRES URI Schemes valid URIs, or are they
>composed of a scheme part, a colon character, and finally a string
>that parses as an email address?  Whatever the answer, the CPIM text
>should be explicit on this topic.

My understanding is that they are valid URIs.  So %-encoding of the quoted 
string would be appropriate.  I'm not sure how much of this detail needs to 
be in the CPIM document, but I agree it should be clear when references to 
RFC 2396 are taken into account.

There's something not clear to me, regarding RFC822/2822:  if a mailbox is 
quoted because it contains spaces, etc., are the quotes part of the mailbox 
name?

..

Ah, here's the answer from RFC 2822, section 3.2.5:

[[
    Semantically, neither the optional CFWS outside of the quote
    characters nor the quote characters themselves are part of the
    quoted-string; the quoted-string is what is contained between the two
    quote characters. [...]
]]

I would then say that the correct form of your example URI should be:

     im:John%20D.%[email protected]

#g

-------------------
Graham Klyne
<[email protected]>



  [reminder: [email protected] for non-technical discussions, please]