Re: [sipcore] Barry Leiba's No Objection on draft-ietf-sipcore-locparam-05: (with COMMENT)

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From: R.Jesske@telekom.de
To: barryleiba@computer.org, iesg@ietf.org
CC: draft-ietf-sipcore-locparam@ietf.org, mahoney@nostrum.com, sipcore-chairs@ietf.org, sipcore@ietf.org, kaduk@mit.edu
Thread-Topic: Barry Leiba's No Objection on draft-ietf-sipcore-locparam-05: (with COMMENT)
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Date: Mon, 10 Feb 2020 09:27:26 +0000
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Subject: Re: [sipcore] Barry Leiba's No Objection on draft-ietf-sipcore-locparam-05: (with COMMENT)
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Hi,
Thank you for your comments.
I have incorporated your proposals as below mentioned.

Best Regards

Roland

-----Ursprüngliche Nachricht-----
Von: Barry Leiba via Datatracker <noreply@ietf.org> 
Gesendet: Mittwoch, 5. Februar 2020 07:38
An: The IESG <iesg@ietf.org>
Cc: draft-ietf-sipcore-locparam@ietf.org; Jean Mahoney <mahoney@nostrum.com>; sipcore-chairs@ietf.org; mahoney@nostrum.com; sipcore@ietf.org
Betreff: Barry Leiba's No Objection on draft-ietf-sipcore-locparam-05: (with COMMENT)

Barry Leiba has entered the following ballot position for
draft-ietf-sipcore-locparam-05: No Objection

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The document, along with other ballot positions, can be found here:
https://datatracker.ietf.org/doc/draft-ietf-sipcore-locparam/



----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

I agree with Ben’s comments, and have only some editorial ones of my own to add:

— Section 4 —

   Only a fully qualified host name is valid.  The syntax does not
   support IP addresses, and if an entity conforming to this
   specification receives a Geolocation header field with a "loc-src"
   parameter containing an IP address then the parameter MUST be
   removed.

It’s a small point, but as you’re already identifying a subject (“an entity conforming to this specification”), it’s unnecessarily awkward to use oassive
voice:

NEW
   Only a fully qualified host name is valid.  The syntax does not
   support IP addresses, and if an entity conforming to this
   specification receives a Geolocation header field with a "loc-src"
   parameter containing an IP address, it MUST remove the
   parameter.
END

[RJ] OK, have it changed to your proposal.

— Section 7 —

   This document introduces the ability of a SIP intermediary to insert
   a host name indicating that they added the specific locationValue to
   the Geolocation header field.

Make it “indicating that it added”; there aren’t multiple intermediaries here.

   If such trust domain is not given, it is
   strongly recommended to delete the location information.

I think the right fix to Ben’s comment here is “If a sufficient trust relationship does not exist, it is strongly recommended that the location information be deleted.”

[RJ] OK. With regard to Ben's comment I have changed it to:
To avoid problems with misinterpretation of the
    "loc-src" parameter, the value should be removed when passed to another domain.

Seeing your proposal I would change the sentence now to:

To avoid problems of a possible corruption of the location information including the "loc-src" parameter when using a untrusted relationship, it is strongly recommended to delete location information when passed to another domain out of the trust domain.

I hope this is OK for you.