[Suit] SUIT URIs

[Brendan Moran <[e-mail]>]

The current text of the SUIT manifest specification uses textually-encoded URIs. While this is probably the most compact URI encoding, it does introduce an additional parsing burden on devices.

Should SUIT consider a mechanism for friendlier URIs? There are two immediate options:
1) SUIT URI:
[
  Scheme: int,
  Host: tstr / bstr, ; tstr for domain, bstr for ip address
  Path: tstr,
  Query: tstr
]



2) CRI as defined in draft-ietf-core-href:
CRI-Reference = [
     (authority // discard),
     *path,
     ? (([], fragment)              ; include array only if
        //([+query], ?fragment))    ; at least one query and/or fragment
   ]

   authority   = (?scheme, ?(host, ?port))
   scheme      = (scheme-name
                  // COAP // COAPS // HTTP // HTTPS)
   scheme-name = (false, text .regexp "[a-z][a-z0-9+.-]*")
   COAP = -1 COAPS = -2 HTTP = -3 HTTPS = -4
   host        = (host-name // host-ip)
   host-name   = (true, text)
   host-ip     = bytes .size 4 / bytes .size 16
   port        = 0..65535
   discard     = 0..127
   path        = text
   query       = text
   fragment    = text
My concern with CRI is that it is not yet in Core’s WGLC.

Either choice could easily be added as an extension to SUIT later, but that might mean that SUIT implementations don’t adopt it.


Best Regards,
Brendan
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