Re: [urn] Request for oneM2M URN Namespace registration

Peter Saint-Andre <stpeter@stpeter.im> Tue, 08 November 2022 20:49 UTC

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To: Miguel Angel Reina Ortega <MiguelAngel.ReinaOrtega=40etsi.org@dmarc.ietf.org>, "Hakala, Juha E" <juha.hakala@helsinki.fi>, "Dale R. Worley" <worley@ariadne.com>
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From: Peter Saint-Andre <stpeter@stpeter.im>
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Subject: Re: [urn] Request for oneM2M URN Namespace registration
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Dear Miguel,

Thanks for your note and my apologies about the delays you have experienced.

I've just now looked at the expired Internet-Draft 
(https://www.ietf.org/archive/id/draft-fujimoto-urn-onem2m-01.txt) and I 
have a few comments.

1. The completed registration template follows RFC 2141, not RFC 8141. 
It should be updated to conform to RFC 8141 (see Appendix A for the new 
template).

2. https://www.onem2m.org/urn results in a 404 error.

3. Would it be possible to briefly clarify what is meant by "name models"?

Once you have updated the Internet-Draft or just the template (because 
publication of an Internet-Draft or RFC is not required for registration 
of a URN namespace identifier), I will make sure that we complete the 
registration with IANA in a timely manner.

Peter

On 11/4/22 2:05 AM, Miguel Angel Reina Ortega wrote:
> Dear all,
> 
> It's been a while now from this registration request, and I would like to know the status of it as it appears not to be registered yet (I cannot see it in https://www.iana.org/assignments/urn-namespaces/urn-namespaces.xhtml)
> 
> Please, could you let me know about that? Or if anything else need to be done from my side?
> 
> Thanks in advance.
> 
> Cordialement.
> 
> -----------------------------------------------------------------------------------------------------------------
> Miguel Angel Reina Ortega – Testing Expert
> Centre for Testing and Interoperability (CTI)
> ETSI ? www.etsi.org ? miguelangel.reinaortega@etsi.org
> Phone: +33 (0)4 92 94 43 49 ? Mobile: +33 (0)6 76 73 60 99
> 
> This email may contain confidential information and is intended for
> the use of the addressee only. Any unauthorized use may be unlawful.
> If you receive this email by mistake, please advise the sender
> immediately by using the reply facility in your email software.
> Thank you for your co-operation.
> 
> -----Original Message-----
> From: Miguel Angel Reina Ortega
> Sent: 02 March 2022 18:17
> To: Hakala, Juha E <juha.hakala@helsinki.fi>; Dale R. Worley <worley@ariadne.com>
> Cc: urn@ietf.org; superuser@gmail.com; francesca.palombini@ericsson.com
> Subject: RE: [urn] Request for oneM2M URN Namespace registration
> 
> Dear Juha,
> 
> Thanks again so much for your comments. After discussion with oneM2M delegates, q-component seems to be the most appropriate in our case. We will accordingly update the syntax in case either several parameters or only one can be used.
> 
> Best regards.
> 
> -----------------------------------------------------------------------------------------------------------------
> Miguel Angel Reina Ortega – Testing Expert Centre for Testing and Interoperability (CTI) ETSI ? www.etsi.org ? miguelangel.reinaortega@etsi.org
> Phone: +33 (0)4 92 94 43 49 ? Mobile: +33 (0)6 76 73 60 99
> 
> This email may contain confidential information and is intended for the use of the addressee only. Any unauthorized use may be unlawful.
> If you receive this email by mistake, please advise the sender immediately by using the reply facility in your email software.
> Thank you for your co-operation.
> 
> -----Original Message-----
> From: Hakala, Juha E <juha.hakala@helsinki.fi>
> Sent: 02 March 2022 13:27
> To: Miguel Angel Reina Ortega <MiguelAngel.ReinaOrtega@etsi.org>; Dale R. Worley <worley@ariadne.com>
> Cc: urn@ietf.org; superuser@gmail.com; francesca.palombini@ericsson.com
> Subject: VS: [urn] Request for oneM2M URN Namespace registration
> 
> Dear Miguel,
> 
> see comments below.
> 
> -----Alkuperäinen viesti-----
> Lähettäjä: Miguel Angel Reina Ortega <MiguelAngel.ReinaOrtega@etsi.org>
> Lähetetty: perjantai 25. helmikuuta 2022 18.55
> Vastaanottaja: Hakala, Juha E <juha.hakala@helsinki.fi>; Dale R. Worley <worley@ariadne.com>
> Kopio: urn@ietf.org; superuser@gmail.com; francesca.palombini@ericsson.com
> Aihe: RE: [urn] Request for oneM2M URN Namespace registration
> 
> Dear Juha,
> 
> I have discussed the issues with the oneM2M delegates and we have updated the oneM2M URN namespace with the following:
> 
> - General rule to limit NSS-restoftree to printable ASCII characters, as you proposed.
> 
> OK.
> 
> - parameters for the MGMT URN namespace will be part of the q-component, so starting with "?=" as should not be part of the URN resolution. Please, advise if that's correct.
> 
> I suggested r-component, but using the q-component (or even the f-component) should be ok as well since your URNs will not be actionable. The choice between these options is yours; what is important is that the parameter can be separated from the nss string.
> 
> Compared with the other two options, f-component has the benefit that if against all odds at least some of the oneM2M URN should be made actionable in the future, both q-component and r-component will be available for that purpose.
> 
> With q-component your URN syntax would then be
> 
> urn:onem2m:<nss-root>:<nss-restoftree>?=<parameters>
> 
> So for instance urn:onem2m:mgmt:nwkType:lora?=parameter1&parameter2
> 
> If it is OK to have more than one parameter, you may want to specify the character separating them (for instance, &). An easier solution is to allow just one parameter at the time.
> 
> Best regards,
> 
> Juha
> -----------------------------------------------------------------------------------------------------------------
> Miguel Angel Reina Ortega - Testing Expert Centre for Testing and Interoperability (CTI) ETSI ? www.etsi.org ? miguelangel.reinaortega@etsi.org
> Phone: +33 (0)4 92 94 43 49 ? Mobile: +33 (0)6 76 73 60 99
> 
> This email may contain confidential information and is intended for the use of the addressee only. Any unauthorized use may be unlawful.
> If you receive this email by mistake, please advise the sender immediately by using the reply facility in your email software.
> Thank you for your co-operation.
> 
> -----Original Message-----
> From: Hakala, Juha E <juha.hakala@helsinki.fi>
> Sent: 23 February 2022 08:57
> To: Dale R. Worley <worley@ariadne.com>; Miguel Angel Reina Ortega <MiguelAngel.ReinaOrtega@etsi.org>
> Cc: urn@ietf.org; superuser@gmail.com; francesca.palombini@ericsson.com
> Subject: VS: [urn] Request for oneM2M URN Namespace registration
> 
> Hello,
> 
> -----Alkuperäinen viesti-----
> Lähettäjä: urn <urn-bounces@ietf.org> Puolesta Dale R. Worley
> Lähetetty: keskiviikko 23. helmikuuta 2022 4.28
> Vastaanottaja: Miguel Angel Reina Ortega <MiguelAngel.ReinaOrtega=40etsi.org@dmarc.ietf.org>
> Kopio: urn@ietf.org; superuser@gmail.com; francesca.palombini@ericsson.com
> Aihe: Re: [urn] Request for oneM2M URN Namespace registration
> 
> As ETSI is a recognized standards body, we should fast-track this.
> 
> + 1.
> 
> Also, there's little specific information to review.
> 
> Subtree registration page
> 
> https://wiki.onem2m.org/index.php?title=OneM2M_URN_Namespace
> 
> provides additional information about oneM2M URNs, but there are some gaps.
> 
> Namespace specific strings will consist of two parts:
> 
> <nss-root>:<nss-restoftree>
> 
> Character set of nss-root is specified as a-z, A-Z, 0-9, but nothing is said about the character set of nss-restoftree. I suppose you could limit it to printable ASCII characters, in order to eliminate the impact of Unicode confusables.
> 
>   Within nss-root MGMT, the nss-restoftree will have the following structure:
> 
> urn:onem2m:mgmt.:nwkType:<identifier>:[<parameters>]
> 
> I suppose the dot after mgmt is an error. If so, we get URNs like:
> 
> urn:onem2m:mgmt:nwkType:lora or urn:onem2m:mgmt:nwkType:ansi_c_12:parameter
> 
> Within nss-restoftree colon has two different roles in the mgmt sub-namespace. It separates both nwkType from identifier and identifier from parameter (if any). This might create confusion regarding the role of the parameter, since nothing in the URN syntax says that the parameter is not part of the identifier. And if in the future you need to sub-divide nwkType, it might no longer be obvious for someone who does not know the syntax already where the identifier is and whether there is a parameter.
> 
> Since onem2m parameters will not have a role in identification, you might be better off including them as URN R-components. Since your URNs will not be resolved, this should not be problematic in any way.
> 
> URN namespace registrations do not need to be RFCs. An RFC can be provided if the identifier system has not been specified elsewhere, and it is considered useful to create an RFC for this purpose (see e.g. RFC 8458; https://datatracker.ietf.org/doc/html/rfc8458) In your case, I do not think that RFC is required or even justified. It will be easier both for you and IETF if you send us just a template as specified in RFC 8141. All registrations published as such templates are listed at https://www.iana.org/assignments/urn-namespaces/urn-namespaces.xhtml.
> 
> ETSI has already made one namespace registration as a template, available at https://www.iana.org/assignments/urn-formal/etsi.
> 
> All the best,
> 
> Juha
> 
>   
> 
> I would recommend that the registration template specify how the NSSs are to be compared, although looking at RFC 8141, it doesn't seem to be required.  (It used to be that specifying the comparison rule was important.)  I suspect that oneM2M intends to use case-sensitive comparison and largely assign NSSs in a single case.
> 
> Dale
> 
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