Re: [stir] I-D Action: draft-ietf-stir-rph-emergency-services-00.txt

Hi Paul,

I think we do intend to make that clearer and provide explicit rules.  We had a discussion at the meeting about what the URN should be, etc. So hoping we can make progress on that for next version.

-Chris

> On Jan 12, 2020, at 2:48 PM, Paul Kyzivat <pkyzivat@alum.mit.edu> wrote:
> 
> I'm having a little difficulty understanding the details of what constitutes a valid assertion. In section 3 I see:
> 
>     {
>       "orig":{"tn":"CgPN"},
>       "dest":{["tn":"911 or URN-SOS"]},
>       "iat":1443208345,
>       "rph":{"ESorig":["esnet,x"]}
>     }
> 
> This isn't ABNF so I don't know the rules for interpreting it. Some of the stuff enclosed in quotes is obviously intended to be literal. But other parts, also included in quotes, seem to placeholders.
> 
> For instance "911 or URN-SOS" - I presume the assertion isn't actually supposed to literally include this. Rather, I guess it should be either "911" or "urn:service:sos".  Similarly I *guess* "CgPN" is not intended to be literal.
> 
> Do I get that right?
> 
> If so, I think there needs to be some additional work to specify this clearly. You could specify the assertion format in ABNF, but maybe there is a better way.
> 
> 	Thanks,
> 	Paul
> 
> On 1/10/20 11:40 AM, internet-drafts@ietf.org wrote:
>> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>> This draft is a work item of the Secure Telephone Identity Revisited WG of the IETF.
>>         Title           : Assertion Values for a Resource Priority Header Claim in Support of Emergency Services Networks
>>         Authors         : Martin Dolly
>>                           Chris Wendt
>> 	Filename        : draft-ietf-stir-rph-emergency-services-00.txt
>> 	Pages           : 6
>> 	Date            : 2020-01-10
>> Abstract:
>>    This document adds new assertion values for a Resource Priority
>>    Header ("rph") claim defined in RFC 8443, in support of Emergency
>>    Services Networks for emergency call origination and callback.
>> The IETF datatracker status page for this draft is:
>> https://datatracker.ietf.org/doc/draft-ietf-stir-rph-emergency-services/
>> There are also htmlized versions available at:
>> https://tools.ietf.org/html/draft-ietf-stir-rph-emergency-services-00
>> https://datatracker.ietf.org/doc/html/draft-ietf-stir-rph-emergency-services-00
>> Please note that it may take a couple of minutes from the time of submission
>> until the htmlized version and diff are available at tools.ietf.org.
>> Internet-Drafts are also available by anonymous FTP at:
>> ftp://ftp.ietf.org/internet-drafts/
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> 
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